Glassy metal bonding agent and preparation method thereof, grinding wheel and its preparation method and application
阅读说明：本技术 金属玻璃结合剂及其制备方法、砂轮及其制备方法和应用 (Glassy metal bonding agent and preparation method thereof, grinding wheel and its preparation method and application ) 是由 从言言 许本超 郝素叶 张云鹤 于 2019-07-08 设计创作，主要内容包括：本发明提供了一种金属玻璃结合剂及其制备方法、砂轮及其制备方法和应用,属于磨料磨具技术领域。本发明提供了一种金属玻璃结合剂,主要由以下重量份的原料制备得到：铜锡合金40-60份、铝20-30份、氧化硅5-10份、氧化铝5-10份、氧化锌6-12份和氧化硼3-8份。该金属玻璃结合剂不仅具有玻璃耐高温、耐腐蚀和脆性的特点,还具有金属结合剂的韧性和延展性,将金属结合剂和玻璃结合剂的性能进行了结合,形成了一种短程有序(韧性),长程无序(脆性)的状态,使得该金属玻璃结合剂不仅具备玻璃结合剂的脆性,还具备金属结合剂的韧性。(The present invention provides a kind of glassy metal bonding agents and preparation method thereof, grinding wheel and its preparation method and application, belong to grinding materials and grinding tool technical field.The present invention provides a kind of glassy metal bonding agents, are mainly prepared by the raw material of following parts by weight: 40-60 parts of copper-tin alloy, 20-30 parts of aluminium, 5-10 parts of silica, 5-10 parts of aluminium oxide, 6-12 parts of zinc oxide and 3-8 parts of boron oxide.The glassy metal bonding agent not only has the characteristics that glass high temperature resistant, corrosion-resistant and brittleness, also with the toughness and ductility of metallic bond, the performance of metallic bond and vitrified bond is combined, form a kind of shortrange order (toughness), the state of longrange disorder (brittleness), so that the glassy metal bonding agent not only has the brittleness of vitrified bond, it is also equipped with the toughness of metallic bond.)
1. a kind of glassy metal bonding agent, which is characterized in that be mainly prepared by the raw material of following parts by weight:
40-60 parts of copper-tin alloy, 20-30 parts of aluminium, 5-10 parts of silica, 5-10 parts of aluminium oxide, 6-12 parts of zinc oxide and boron oxide 3-8 parts.
2. glassy metal bonding agent according to claim 1, which is characterized in that the glassy metal bonding agent mainly by with The raw material of lower parts by weight is prepared:
50-55 parts of copper-tin alloy, 20-25 parts of aluminium, 5 parts of silica, 5 parts of aluminium oxide, 6-12 parts of zinc oxide and 4-8 parts of boron oxide.
3. glassy metal bonding agent according to claim 1 or 2, which is characterized in that the quality of copper in the copper-tin alloy Percentage composition is 55%-70%.
4. a kind of preparation method of glassy metal bonding agent as described in claim 1, which comprises the following steps:
The raw material of the glassy metal bonding agent is mixed, then carries out melting, then carry out quenching, obtains glassy metal combination Agent.
5. the preparation method of glassy metal bonding agent according to claim 4, which is characterized in that the quenching is quenched for liquid nitrogen It is cold.
6. the preparation method of glassy metal bonding agent according to claim 4, which is characterized in that the melting is included in 60-120min is kept the temperature at 480-500 DEG C, then keeps the temperature 120-180min at 1200-1500 DEG C.
7. a kind of grinding wheel, which is characterized in that comprise the following components in parts by weight: 80-92 parts of glassy metal bonding agent and abrasive material 8- 20 parts；
The glassy metal bonding agent is mainly prepared by the raw material of following parts by weight: 40-60 parts of copper-tin alloy, aluminium 20-30 Part, 5-10 parts of silica, 5-10 parts of aluminium oxide, 6-12 parts of zinc oxide and 3-8 parts of boron oxide；
The abrasive material is diamond or cubic boron nitride.
8. a kind of preparation method of grinding wheel as claimed in claim 7, which comprises the following steps:
The glassy metal bonding agent of mixing is pressed with abrasive material, is then sintered, obtains grinding wheel.
9. the preparation method of grinding wheel according to claim 8, which is characterized in that the temperature of the sintering is 400-600 DEG C, The pressure of the sintering is 200-300Mpa, and the time of the sintering is 5-10min.
10. it is a kind of using grinding wheel as claimed in claim 7 stainless steel material, aluminum alloy materials or nickel alloy material grinding With the application in polishing.
Technical field
The present invention relates to a kind of glassy metal bonding agents and preparation method thereof, grinding wheel and its preparation method and application, belong to Grinding materials and grinding tool technical field.
Background technique
Superhard material grinding tool is widely used in field of machining, such as automobile, electronics, refrigeration, tool, LED row The machining of industry.Superhard material grinding tool especially diamond and cubic boron nitride concretion abrasive wheel, in current grinding skill Occupy leading position in art, extra hard material grinding wheel is that bonding agent is added in abrasive material, the manufactured base through green compact, drying and roasting Body, wherein bonding agent is affected to the performance of extra hard material grinding wheel.
For the accurate grinding and polishing of the materials such as stainless steel, aluminium alloy, nickel alloy, it often will appear viscous bits mill not It is dynamic, scratch, the problems such as low efficiency and service life are short, more stringent requirements are proposed for this performance to grinding wheel.Currently, the superhard material used The material common bonding agent of grinding wheel has metallic bond, vitrified bond and resinoid bond etc., what different bonding agents were prepared Extra hard material grinding wheel has itself unique advantage and disadvantage.For example, although grinding wheel made from metallic bond has preferably Toughness, service life are high, but the porosity is low, and grinding efficiency is low；Although grinding wheel made from vitrified bond has equally distributed gas Hole, grinding efficiency are high, but brittleness is big, the service life is low；Grinding wheel made from resinoid bond is mainly used for roughing field, is not suitable for For being processed to soft viscous material.
Summary of the invention
The first purpose of this invention is to provide a kind of glassy metal bonding agent, which has preferable Brittleness and toughness.
Second object of the present invention is to provide the preparation method of above-mentioned glassy metal bonding agent, preparation method operation It is convenient, it is easy to industrialized production.
Third object of the present invention is to provide a kind of grinding wheel, which has longer service life and preferable cutting edge of a knife or a sword Benefit.
Fourth object of the present invention is to provide the preparation method of above-mentioned grinding wheel.
Of the invention the 5th is designed to provide above-mentioned grinding wheel in stainless steel material, aluminum alloy materials or nickel alloy material Grinding and polishing in application.
Technical scheme is as follows:
A kind of glassy metal bonding agent, is mainly prepared by the raw material of following parts by weight:
40-60 parts of copper-tin alloy, 20-30 parts of aluminium, 5-10 parts of silica, 5-10 parts of aluminium oxide, 6-12 parts of zinc oxide and oxygen Change boron 3-8 parts.
Glassy metal bonding agent of the invention is mainly by the copper-tin alloy of specific dosage, aluminium, silica, aluminium oxide, oxidation Zinc and boron oxide are prepared, so that the glassy metal bonding agent not only has vitrified bond high temperature resistant, corrosion-resistant and brittleness, Also with the toughness and ductility of metallic bond, the performance of metallic bond and vitrified bond is combined, is formed A kind of shortrange order (toughness), the state of longrange disorder (brittleness) compensate for the deficiency of metallic bond and vitrified bond, So that the glassy metal bonding agent not only has the brittleness of vitrified bond, it is also equipped with the toughness of metallic bond.
Preferably, the glassy metal bonding agent is mainly prepared by the raw material of following parts by weight:
50-55 parts of copper-tin alloy, 20-25 parts of aluminium, 5 parts of silica, 5 parts of aluminium oxide, 6-12 parts of zinc oxide and boron oxide 4-8 Part.By reasonably adjusting and optimizing copper-tin alloy, aluminium, silica, aluminium oxide, zinc oxide and the dosage of boron oxide, so that this is excellent Selecting the glassy metal bonding agent of amount ranges has more preferably brittleness and toughness.
Preferably, the partial size of the raw material is 1-5 μm.The partial size of raw material is 1-5 μm and refers to copper-tin alloy, aluminium, oxidation Silicon, aluminium oxide, zinc oxide and boron oxide partial size in 1-5 μ m.Each former material of metallic bond uses Ultra-fine powder Last (1-5 μm), Specific Surface Area Measurement is bigger, and sintering temperature is low, and low energy consumption, while fine granularity makees the package of the abrasive materials such as diamond With stronger, there is better holding power, wheel life and grinding efficiency can be improved.
Preferably, the mass percentage of copper is 55%-70% in the copper-tin alloy.The quality hundred of copper in copper-tin alloy Dividing content is 55%-70%, and glassy metal bonding agent can be made to have preferable ductility, promote the toughness of bonding agent, such as The mass percentage of copper is excessive in fruit copper-tin alloy, and the hardness of grinding wheel is greatly reduced, if copper in copper-tin alloy Mass percentage is too small, the toughness of grinding wheel will be made insufficient, glassy metal bonding agent is more crisp, is easy to produce chipping phenomenon.
A kind of preparation method of glassy metal bonding agent, comprising the following steps:
The raw material of the glassy metal bonding agent is mixed, melting is then carried out, then carry out quenching, obtains glassy metal Bonding agent.
The present invention provides a kind of preparation method of glassy metal adhesive, this method need to only be mixed raw material, then into Glassy metal bonding agent can be obtained in row melting and quenching.The raw material of the preparation method is easy to get, at low cost, easy to operate, is easy to Industrialized production.
Preferably, the quenching is liquid nitrogen quenching.To the glassy metal bonding agent after melting by the way of liquid nitrogen quenching Quenching is carried out, cooling velocity is fast, ensure that the noncrystalline state of bonding agent, is capable of the hardness and strength of big panel height bonding agent.
Preferably, the melting, which is included at 480-500 DEG C, keeps the temperature 60-120min, then keeps the temperature at 1200-1500 DEG C 120-180min.60-120min is kept the temperature at 480-500 DEG C to be conducive to each raw material and uniformly mix, and alloy phase is formed, in 1200- 120-180min is kept the temperature at 1500 DEG C, is convenient for Flashmelt, each raw material can be evenly dispersed, forms eutectic.
A kind of grinding wheel, comprises the following components in parts by weight: 80-92 parts and abrasive material 8-20 parts of glassy metal bonding agent；
The glassy metal bonding agent is mainly prepared by the raw material of following parts by weight: 40-60 parts of copper-tin alloy, aluminium 20-30 parts, 5-10 parts of silica, 5-10 parts of aluminium oxide, 6-12 parts of zinc oxide and 3-8 parts of boron oxide；
The abrasive material is diamond or cubic boron nitride.
Grinding wheel of the invention is mainly prepared by the glassy metal bonding agent and abrasive material of specific dosage.Specific metal glass Glass bonding agent to prepare that the sintering temperature during grinding wheel is lower, and glassy metal bonding agent of the invention is metal powder and metal The eutectic of oxide has carried out alloying in melting process, while inside is added to boron oxide, so that the glassy metal knot Mixture can be effectively reduced sintering temperature when preparing grinding wheel, significantly reduce the consumption and waste of the energy；And glassy metal knot Mixture has excellent brittleness and toughness, and the service life and sharpness of grinding wheel greatly improved.
The raw material of glassy metal bonding agent includes metal and metal oxide, during the sintering process, metal oxide party Certain sintering shrinkage can be generated, forms equally distributed stomata inside grinding wheel, these stomatas can play appearance bits and break with micro- Broken effect avoids scuffing and viscous bits, can effectively extend the service life of grinding wheel, while can also improve grinding efficiency；The sand Take turns sharp, stock-removing efficiency height, high temperature resistant, acid and alkali-resistance.Glassy metal bonding agent can be used for multiple grinding, good to abrasive material holding power, With universality, it can be used for the machining such as fine grinding, polishing and cutting of the materials such as stainless steel, aluminium alloy, nickel alloy, can be improved The surface quality of workpiece reduces production cost.
The preparation method of above-mentioned grinding wheel, comprising the following steps:
The glassy metal bonding agent of mixing is pressed with abrasive material, is then sintered, obtains grinding wheel.
The preparation method need to only mix raw material, and grinding wheel can be prepared in repressed molding and sintering.Preparation method letter Single, easy to operate, the equipment used is simple, easy to industrialized production.
Preferably, the temperature of the sintering is 400-600 DEG C, and the pressure of the sintering is 200-300Mpa, the sintering Time be 5-10min.The sintering temperature of conventional metallic bond and vitrified bond is mostly more than 600 DEG C, the metal glass Glass bonding agent is the eutectic of metal powder and metal oxide, has carried out alloying when melting, while inside is added to Boron oxide powder, so that the glassy metal bonding agent can be effectively reduced sintering temperature when preparing grinding wheel, so that sintering temperature is only It is 400-600 DEG C, significantly reduces the consumption and waste of the energy.
Preferably, the atmosphere of the sintering is nitrogen.It is sintered under a nitrogen, helps to prevent glassy metal knot Oxidation reaction occurs at high temperature for mixture.
Application of the above-mentioned grinding wheel in the grinding and polishing of stainless steel material, aluminum alloy materials or nickel alloy material.
Above-mentioned grinding wheel has good sharpness, and stock-removing efficiency is high, and long service life can be applied to stainless steel material, aluminium In the grinding and polishing of alloy material or nickel alloy material.
Specific embodiment
The invention will be further described With reference to embodiment.
In the preparation method of glassy metal bonding agent of the invention, the mode of mixing is not construed as limiting, using this field Common hybrid mode is mixed, for example, can using raw material is uniformly mixed by the way of 1000 mesh three times.
In the preparation method of glassy metal bonding agent of the invention, the container of melting is not construed as limiting, using this field Common melting container, for example, raw material can be put into high temperature resistant silica crucible.
In the preparation method of glassy metal bonding agent of the invention, liquid nitrogen quenching is former by the liquid that will melt after melting Material is quickly poured into sufficient liquid nitrogen.
In the preparation method of glassy metal bonding agent of the invention, carried out to by the glassy metal bonding agent block of quenching It crushes, obtains glassy metal bonding agent.The mode of crushing is not construed as limiting, common grinding mode, example can be used Such as, the glassy metal bonding agent obtained after liquid nitrogen quenching can be put into ball grinder and carries out ball milling.Ball milling 20-24h, revolving speed are 50-70r/min.Sintered carbide ball can be used in abrading-ball when ball milling.Smashed glassy metal bonding agent is sieved through 300# and is carried out Screening is sieved 3 times, and extracting screen underflow is up to required glassy metal bonding agent.
The granularity of diamond is M4/8 and/or M5/10 in the component of grinding wheel of the invention.
Cold pressing is compressed in the preparation method of grinding wheel of the invention.
The embodiment 1 of glassy metal bonding agent
The glassy metal bonding agent of the present embodiment, is prepared by the raw material of following parts by weight:
40 parts of copper-tin alloy powder, 30 parts of aluminium powder, 10 parts of silica powder, 10 parts of alumina powder, 6 parts of oxide powder and zinc and boron oxide 4 parts of powder.
The mass percentage of copper is 65% in copper-tin alloy, and each raw material particle size is 5 μm.
The embodiment 2 of glassy metal bonding agent
The glassy metal bonding agent of the present embodiment, is prepared by the raw material of following parts by weight:
45 parts of copper-tin alloy powder, 25 parts of aluminium powder, 10 parts of silica powder, 10 parts of alumina powder, 6 parts of oxide powder and zinc and boron oxide 4 parts of powder.
The mass percentage of copper is 65% in copper-tin alloy, and each raw material particle size is 5 μm.
The embodiment 3 of glassy metal bonding agent
The glassy metal bonding agent of the present embodiment, is prepared by the raw material of following parts by weight:
50 parts of copper-tin alloy powder, 20 parts of aluminium powder, 5 parts of silica powder, 5 parts of alumina powder, 12 parts of oxide powder and zinc and boron oxide 8 parts of powder.
The mass percentage of copper is 65% in copper-tin alloy, and each raw material particle size is 5 μm.
The embodiment 4 of glassy metal bonding agent
The glassy metal bonding agent of the present embodiment, is prepared by the raw material of following parts by weight:
55 parts of copper-tin alloy powder, 25 parts of aluminium powder, 5 parts of silica powder, 5 parts of alumina powder, 6 parts of oxide powder and zinc and boron oxide powder 4 parts.
The mass percentage of copper is 65% in copper-tin alloy, and each raw material particle size is 5 μm.
The embodiment 5 of glassy metal bonding agent
The glassy metal bonding agent of the present embodiment, is prepared by the raw material of following parts by weight:
60 parts of copper-tin alloy powder, 20 parts of aluminium powder, 5 parts of silica powder, 5 parts of alumina powder, 6 parts of oxide powder and zinc and boron oxide powder 4 parts.
The mass percentage of copper is 65% in copper-tin alloy, and each raw material particle size is 5 μm.
The embodiment 6 of glassy metal bonding agent
The glassy metal bonding agent of the present embodiment and the embodiment 3 of glassy metal bonding agent the difference is that, copper and tin The ratio of copper and tin is different in alloy, and the mass percentage of copper is 55% in copper-tin alloy in embodiment 6, other raw materials and its Dosage is identical as the embodiment 3 of glassy metal bonding agent.
The embodiment 7 of glassy metal bonding agent
The glassy metal bonding agent of the present embodiment and the embodiment 3 of glassy metal bonding agent the difference is that, copper and tin The ratio of copper and tin is different in alloy, and the mass percentage of copper is 70% in copper-tin alloy in embodiment 7, other raw materials and its Dosage is identical as the embodiment 3 of glassy metal bonding agent.
The embodiment 1 of the preparation method of glassy metal bonding agent
The preparation method of the glassy metal bonding agent of the present embodiment, comprising the following steps:
(a) raw material of glassy metal bonding agent mixes
After weighing each raw material in the ratio in the embodiment 1 of metal vitrified bond, be sieved 3 times, be sieved for 1000 mesh Sieve, is put into spare in high temperature resistant silica crucible.
(b) melting
With the heating rate of 10 DEG C/min from room temperature to 500 DEG C of heat preservation 120min, then with the heating speed of 20 DEG C/min Rate is warming up to 1500 DEG C of heat preservation 180min, obtains liquid mixture.
(c) quenching
The liquid mixture that melting is obtained is quickly poured into the vessel equipped with sufficient liquid nitrogen, after 10min, obtains Blocky bonding agent.
(d) it crushes
The blocky bonding agent that liquid nitrogen quenching is obtained is put into hard alloy ball grinder and crushes, ball milling for 24 hours, revolving speed 70r/ Then min will crush resulting bonding agent powder by 300# sieve screening, be sieved 3 times, extracting screen underflow is up to required glassy metal Bonding agent.
The embodiment 2 of the preparation method of glassy metal bonding agent
The preparation method of the glassy metal bonding agent of the present embodiment, comprising the following steps:
(a) raw material of glassy metal bonding agent mixes
After weighing each raw material in the ratio in the embodiment 2 of metal vitrified bond, be sieved 3 times, be sieved for 1000 mesh Sieve, is put into spare in high temperature resistant silica crucible.
(b) melting
With the heating rate of 10 DEG C/min from room temperature to 500 DEG C of heat preservation 60min, then with the heating rate of 20 DEG C/min 1500 DEG C of heat preservation 120min are warming up to, liquid mixture is obtained.
(c) quenching
The liquid mixture that melting is obtained is quickly poured into the vessel equipped with sufficient liquid nitrogen, after 10min, obtains Blocky bonding agent.
(d) it crushes
The blocky bonding agent that liquid nitrogen quenching is obtained is put into hard alloy ball grinder and crushes, ball milling 20h, revolving speed 50r/ Then min will crush resulting bonding agent powder by 300# sieve screening, be sieved 3 times, extracting screen underflow is up to required glassy metal Bonding agent.
The embodiment 3 of the preparation method of glassy metal bonding agent
The preparation method of the glassy metal bonding agent of the present embodiment, comprising the following steps:
(a) raw material of glassy metal bonding agent mixes
After weighing each raw material in the ratio in the embodiment 3 of metal vitrified bond, be sieved 3 times, be sieved for 1000 mesh Sieve, is put into spare in high temperature resistant silica crucible.
(b) melting
With the heating rate of 10 DEG C/min from room temperature to 480 DEG C of heat preservation 120min, then with the heating speed of 20 DEG C/min Rate is warming up to 1200 DEG C of heat preservation 180min, obtains liquid mixture.
(c) quenching
The liquid mixture that melting is obtained is quickly poured into the vessel equipped with sufficient liquid nitrogen, after 10min, obtains Blocky bonding agent.
(d) it crushes
The blocky bonding agent that liquid nitrogen quenching is obtained is put into hard alloy ball grinder and crushes, ball milling for 24 hours, revolving speed 70r/ Min,
Then resulting bonding agent powder will be crushed by 300# sieve screening, be sieved 3 times, extracting screen underflow is up to required metal Vitrified bond.
The embodiment 4 of the preparation method of glassy metal bonding agent
The preparation method of the glassy metal bonding agent of the present embodiment, comprising the following steps:
(a) raw material of glassy metal bonding agent mixes
After weighing each raw material in the ratio in the embodiment 4 of metal vitrified bond, be sieved 3 times, be sieved for 1000 mesh Sieve, is put into spare in high temperature resistant silica crucible.
(b) melting
With the heating rate of 10 DEG C/min from room temperature to 480 DEG C of heat preservation 60min, then with the heating rate of 20 DEG C/min 1200 DEG C of heat preservation 120min are warming up to, liquid mixture is obtained.
(c) quenching
The liquid mixture that melting is obtained is quickly poured into the vessel equipped with sufficient liquid nitrogen, after 10min, obtains Blocky bonding agent.
(d) it crushes
The blocky bonding agent that liquid nitrogen quenching is obtained is put into hard alloy ball grinder and crushes, ball milling 20h, revolving speed 50r/ Then min will crush resulting bonding agent powder by 300# sieve screening, be sieved 3 times, extracting screen underflow is up to required glassy metal Bonding agent.
The embodiment 5 of the preparation method of glassy metal bonding agent
The preparation method of the glassy metal bonding agent of the present embodiment, comprising the following steps:
(a) raw material of glassy metal bonding agent mixes
After weighing each raw material in the ratio in the embodiment 5 of metal vitrified bond, be sieved 3 times, be sieved for 1000 mesh Sieve, is put into spare in high temperature resistant silica crucible.
(b) melting
With the heating rate of 10 DEG C/min from room temperature to 490 DEG C of heat preservation 120min, then with the heating speed of 20 DEG C/min Rate is warming up to 1500 DEG C of heat preservation 180min, obtains liquid mixture.
(c) quenching
The liquid mixture that melting is obtained is quickly poured into the vessel equipped with sufficient liquid nitrogen, after 10min, obtains Blocky bonding agent.
(d) it crushes
The blocky bonding agent that liquid nitrogen quenching is obtained is put into hard alloy ball grinder and crushes, ball milling for 24 hours, revolving speed 70r/ Then min will crush resulting bonding agent powder by 300# sieve screening, be sieved 3 times, extracting screen underflow is up to required glassy metal Bonding agent.
The embodiment 6 of the preparation method of glassy metal bonding agent
Each raw material, preparation method and glassy metal bonding agent are weighed in the ratio in the embodiment 6 of metal vitrified bond Preparation method embodiment 3 it is identical.
The embodiment 7 of the preparation method of glassy metal bonding agent
Each raw material, preparation method and glassy metal bonding agent are weighed in the ratio in the embodiment 7 of metal vitrified bond Preparation method embodiment 3 it is identical.
The embodiment 1 of grinding wheel
The grinding wheel of the present embodiment is grouped as by the group of following parts by weight:
80 parts and 20 parts of diamond of glassy metal bonding agent.Glassy metal bonding agent is the embodiment of glassy metal bonding agent 1 glassy metal bonding agent.
The embodiment 2 of grinding wheel
The grinding wheel of the present embodiment is grouped as by the group of following parts by weight:
80 parts and 20 parts of diamond of glassy metal bonding agent.Glassy metal bonding agent is the embodiment of glassy metal bonding agent 2 glassy metal bonding agent.
The embodiment 3 of grinding wheel
The grinding wheel of the present embodiment is grouped as by the group of following parts by weight:
80 parts and 20 parts of diamond of glassy metal bonding agent.Glassy metal bonding agent is the embodiment of glassy metal bonding agent 3 glassy metal bonding agent.
The embodiment 4 of grinding wheel
The grinding wheel of the present embodiment is grouped as by the group of following parts by weight:
80 parts and 20 parts of diamond of glassy metal bonding agent.Glassy metal bonding agent is the embodiment of glassy metal bonding agent 4 glassy metal bonding agent.
The embodiment 5 of grinding wheel
The grinding wheel of the present embodiment is grouped as by the group of following parts by weight:
80 parts and 20 parts of diamond of glassy metal bonding agent.Glassy metal bonding agent is the embodiment of glassy metal bonding agent 5 glassy metal bonding agent.
The embodiment 6 of grinding wheel
The grinding wheel of the present embodiment is grouped as by the group of following parts by weight:
80 parts and 20 parts of diamond of glassy metal bonding agent.Glassy metal bonding agent is the embodiment of glassy metal bonding agent 6 glassy metal bonding agent.
The embodiment 7 of grinding wheel
The grinding wheel of the present embodiment is grouped as by the group of following parts by weight:
80 parts and 20 parts of diamond of glassy metal bonding agent.Glassy metal bonding agent is the embodiment of glassy metal bonding agent 7 glassy metal bonding agent.
The embodiment 8 of grinding wheel
The grinding wheel of the present embodiment is grouped as by the group of following parts by weight:
92 parts and 8 parts of diamond of glassy metal bonding agent.Glassy metal bonding agent is the embodiment 3 of glassy metal bonding agent Glassy metal bonding agent.
The embodiment 1 of the preparation method of grinding wheel
The preparation method of the grinding wheel of the present embodiment, comprising the following steps:
Glassy metal bonding agent and diamond are weighed in the ratio in the embodiment 1 of grinding wheel, is mixed, compression moulding, then Under the pressure of 300Mpa, 600 DEG C at a temperature of, nitrogen atmosphere under be sintered, be sintered 8min, obtain grinding wheel.
The embodiment 2 of the preparation method of grinding wheel
The preparation method of the grinding wheel of the present embodiment, comprising the following steps:
Glassy metal bonding agent and diamond are weighed in the ratio in the embodiment 2 of grinding wheel, is mixed, compression moulding, then Under the pressure of 300Mpa, 600 DEG C at a temperature of, nitrogen atmosphere under be sintered, be sintered 8min, obtain grinding wheel.
The embodiment 3 of the preparation method of grinding wheel
The preparation method of the grinding wheel of the present embodiment, comprising the following steps:
Glassy metal bonding agent and diamond are weighed in the ratio in the embodiment 3 of grinding wheel, is mixed, compression moulding, then Under the pressure of 300Mpa, 600 DEG C at a temperature of, nitrogen atmosphere under be sintered, be sintered 8min, obtain grinding wheel.
The embodiment 4 of the preparation method of grinding wheel
The preparation method of the grinding wheel of the present embodiment, comprising the following steps:
Glassy metal bonding agent and diamond are weighed in the ratio in the embodiment 4 of grinding wheel, is mixed, compression moulding, then Under the pressure of 300Mpa, 600 DEG C at a temperature of, nitrogen atmosphere under be sintered, be sintered 8min, obtain grinding wheel.
The embodiment 5 of the preparation method of grinding wheel
The preparation method of the grinding wheel of the present embodiment, comprising the following steps:
Glassy metal bonding agent and diamond are weighed in the ratio in the embodiment 5 of grinding wheel, is mixed, compression moulding, then Under the pressure of 300Mpa, 600 DEG C at a temperature of, nitrogen atmosphere under be sintered, be sintered 8min, obtain grinding wheel.
The embodiment 6 of the preparation method of grinding wheel
The preparation method of the grinding wheel of the present embodiment, comprising the following steps:
Glassy metal bonding agent and diamond are weighed in the ratio in the embodiment 6 of grinding wheel, is mixed, compression moulding, then Under the pressure of 300Mpa, 600 DEG C at a temperature of, nitrogen atmosphere under be sintered, be sintered 8min, obtain grinding wheel.
The embodiment 7 of the preparation method of grinding wheel
The preparation method of the grinding wheel of the present embodiment, comprising the following steps:
Glassy metal bonding agent and diamond are weighed in the ratio in the embodiment 7 of grinding wheel, is mixed, compression moulding, then Under the pressure of 300Mpa, 600 DEG C at a temperature of, nitrogen atmosphere under be sintered, be sintered 8min, obtain grinding wheel.
The embodiment 8 of the preparation method of grinding wheel
The preparation method of the grinding wheel of the present embodiment, comprising the following steps:
Glassy metal bonding agent and diamond are weighed in the ratio in the embodiment 8 of grinding wheel, is mixed, compression moulding, then Under the pressure of 300Mpa, 600 DEG C at a temperature of, nitrogen atmosphere under be sintered, be sintered 8min, obtain grinding wheel.
Comparative example 1
The grinding wheel of this comparative example is made of raw material from the following weight: 30 parts of Cu, 5 parts of Sn, 10 parts of Al, diamond 5 Part, 4 parts of additive.
Additive is made of raw material from the following weight: B2O325 parts, 25 parts of ZnO, SiO26 parts, Al2O310 parts.
The preparation method of additive, including the following steps:
1) B of formula ratio is taken2O3、ZnO、SiO2、Al2O3After mixing, it is put into silica crucible, is placed in high temperature resistance furnace In, being heated to 1250 DEG C and keep the temperature 2h with 10 DEG C/min obtains mixture；
2) mixture obtained by step 1) is cooled to 850 DEG C with the rate of 5 DEG C/min, keeps the temperature 2h, obtains sinter；
3) sinter obtained by step 2) is poured into chilling in cold water (room temperature), obtains block material；The block material that will be obtained It is fitted into ball grinder the ball milling 60h on high energy ball mill together with ethyl alcohol, obtains the powder of granularity D90 < 200nm, it is as described to add Add agent.
The preparation method of grinding wheel, including the following steps:
A) Cu powder, Sn powder, Al powder, diamond and the additive for taking formula ratio, are fitted into mixing 2h in three-dimensional material mixer, obtain mixed Close material；
B) mixture obtained by step a) is fitted into steel die, time material strikes off, and is placed in the pressure on hydraulic press with 180MPa Power is suppressed, and blank is obtained；
C) blank obtained by step b) is fitted into graphite jig, in air atmosphere, is placed in pressing sintering and is burnt Knot, specifically: be first warming up to 450 DEG C with the rate of 100 DEG C/min and keep the temperature 2min, promote the Sn of low melting point to be completely melt with into Then row alloying reaction is warming up to 590 DEG C with 50 DEG C of rate and keeps the temperature 8min；After heat preservation, mold is placed in cold water Chilling is in (room temperature) to get the abrasive material block；
D) abrasive material block obtained by step c is bonded on grinding wheel base body to get the self-sharpening diamond grinding wheel.
Comparative example 2
The embodiment 3 of the preparation method of the preparation method and glassy metal bonding agent of the glassy metal bonding agent of this comparative example The difference is that step (c) is different, comparative example 2 is the liquid mixture for obtaining melting, is quickly poured into equipped with abundance 0 In the vessel of DEG C water, other the step of with glassy metal bonding agent preparation method embodiment 3.
Embodiment 3 of the preparation method of the corresponding grinding wheel of comparative example 2 with the preparation method of grinding wheel.
Comparative example 3
The glassy metal bonding agent of this comparative example and the embodiment 3 of glassy metal bonding agent the difference is that, aluminium tin The dosage of alloy is different, and specially 30 parts, the phase of other raw materials and its dosage with the embodiment 3 of glassy metal bonding agent Together.
3 phase of embodiment of the preparation method and the preparation method of glassy metal bonding agent of corresponding glassy metal bonding agent Together, the embodiment 3 of preparation method of preparation method and grinding wheel of corresponding grinding wheel is identical.
Comparative example 4
The glassy metal bonding agent of this comparative example and the embodiment 3 of glassy metal bonding agent the difference is that, aluminium tin The dosage of alloy is different, and specially 80 parts, the phase of other raw materials and its dosage with the embodiment 3 of glassy metal bonding agent Together.
3 phase of embodiment of the preparation method and the preparation method of glassy metal bonding agent of corresponding glassy metal bonding agent Together, the embodiment 3 of preparation method of preparation method and grinding wheel of corresponding grinding wheel is identical.
Comparative example 5
The glassy metal bonding agent of this comparative example and the embodiment 3 of glassy metal bonding agent the difference is that, oxidation The dosage of boron is different, and specially 1 part, other raw materials and its dosage are identical with the embodiment 3 of glassy metal bonding agent.
3 phase of embodiment of the preparation method and the preparation method of glassy metal bonding agent of corresponding glassy metal bonding agent Together, the embodiment 3 of preparation method of preparation method and grinding wheel of corresponding grinding wheel is identical.
Comparative example 6
This comparative example and embodiment 3 the difference is that, the dosage of boron oxide is different, specially 12 parts.
3 phase of embodiment of the preparation method and the preparation method of glassy metal bonding agent of corresponding glassy metal bonding agent Together, the embodiment 3 of preparation method of preparation method and grinding wheel of corresponding grinding wheel is identical.
Test example
This test example is the application of grinding wheel, the grinding wheel that the grinding wheel to the embodiment 1-8 of grinding wheel and comparative example 1-6 are obtained respectively It is tested for the property, Al alloy parts is processed, test result is shown in Table 1.
Wherein, the instrument of tensile strength test is tensile strength analyzer, and the instrument of hardness test is Rockwell apparatus inspection It surveys.
Common metal grinding wheel: 80 parts of mixed metal powder of copper powder and glass putty metal are mixed with 20 parts of diamond, are sintered The common metal grinding wheel arrived.
Conventional ceramic grinding wheel: nonmetal oxide (eutectic of aluminium oxide, silica and boron oxide metal oxide) 80 Part is with 20 parts of diamond mixings, the conventional ceramic grinding wheel being sintered.
The performance test results for the grinding wheel that the grinding wheel and comparative example 1-6 of the embodiment 1-8 of 1 grinding wheel of table obtains
The experimental results showed that the sharpness for the grinding wheel that embodiment 1-8 is obtained improves 30% or more compared with metal wheel, the longevity is used Life improves 40% or more compared with vitrified abrasive, deficiency existing for vitrified bond and metallic bond is compensated for, by two kinds of bonding agents The advantages of preferably combine and embody, effectively facilitated the technological progress and promotion of hard grinding wheel.
For the grinding wheel of comparative example 1-6 compared with common metal grinding wheel, the increase rate of sharpness is lower, 15% hereinafter, right For the grinding wheel of ratio 1-6 compared with conventional ceramic grinding wheel, the increase rate of service life is lower, 20% hereinafter, comparative example 1-3 and The tensile strength of the grinding wheel of comparative example 6 is lower, in 65MPa hereinafter, the hardness of comparative example 1-2 and comparative example 4-5 are poor, exists 55HRB or less.
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