Die-cutting tool shaft and machining process thereof
阅读说明：本技术 一种模切刀具轴及其加工工艺 (Die-cutting tool shaft and machining process thereof ) 是由 孟庆虎 于 2021-08-07 设计创作，主要内容包括：本申请涉及模切生产加工设备的领域,具体公开了一种模切刀具轴,其由包括以下重量份的原料制备而成：碳化钨200-240份、碳化钛0.02-0.08份、羰基镍粉3-6份、铬粉4-6份、铝粉2-5份、钼粉1-3份、碳粉7-10份、晶粒抑制剂1-2.5份、铁粉-石墨烯复合材料65-71份,其具有提高刀具轴的硬度和耐磨性,使其使用寿命延长的优点；另外,还提供了一种模切刀具轴的加工工艺。(The application relates to the field of die cutting production and processing equipment, and particularly discloses a die cutting tool shaft, which is prepared from the following raw materials in parts by weight: 240 parts of tungsten carbide 200-containing materials, 0.02-0.08 part of titanium carbide, 3-6 parts of nickel carbonyl powder, 4-6 parts of chromium powder, 2-5 parts of aluminum powder, 1-3 parts of molybdenum powder, 7-10 parts of carbon powder, 1-2.5 parts of grain inhibitor and 65-71 parts of iron powder-graphene composite material, and has the advantages of improving the hardness and the wear resistance of a cutter shaft and prolonging the service life of the cutter shaft; in addition, a processing technology of the die cutting mold shaft is also provided.)
1. The die cutting tool shaft is characterized by being prepared from the following raw materials in parts by weight: 240 parts of tungsten carbide 200-containing materials, 0.02-0.08 part of titanium carbide, 3-6 parts of nickel carbonyl powder, 4-6 parts of chromium powder, 2-5 parts of aluminum powder, 1-3 parts of molybdenum powder, 7-10 parts of carbon powder, 1-2.5 parts of grain inhibitor and 65-71 parts of iron powder-graphene composite material.
2. The die cutter shaft according to claim 1, wherein: the die-cutting tool shaft is prepared from the following raw materials in parts by weight: 230 parts of tungsten carbide 215-containing material, 0.04-0.06 part of titanium carbide, 4-5 parts of nickel carbonyl powder, 4.5-5.5 parts of chromium powder, 3-4 parts of aluminum powder, 1.5-2.5 parts of molybdenum powder, 8-9 parts of carbon powder, 67-69 parts of iron powder, 1-2.5 parts of grain inhibitor and 65-71 parts of iron powder-graphene composite material.
3. The die cutter shaft according to claim 1, wherein: the grain inhibitor is prepared from the following raw materials in parts by weight: 2-5 parts of vanadium carbide, 1-3 parts of chromium carbide and 0.2-0.5 part of thallium carbide.
4. The die cutter shaft according to claim 3, wherein: the grain inhibitor is prepared from the following raw materials in parts by weight: 3-4 parts of vanadium carbide, 1-2 parts of chromium carbide and 0.3-0.4 part of thallium carbide.
5. The die cutter shaft according to claim 1, wherein: the weight portion of the added crystal grain inhibitor is 1.5-2.0 portions.
6. The die cutter shaft according to claim 1, wherein: the iron powder-graphene composite material is prepared by adsorbing graphene oxide on the surface of iron powder, and the weight ratio of the iron powder to the graphene oxide is 50: (0.003-0.010).
7. The die cutter shaft according to claim 6, wherein: the weight ratio of the iron powder to the graphene oxide is 50: (0.005-0.07).
8. The die cutter shaft according to claim 1, wherein: the preparation method of the iron powder-graphene composite material comprises the following steps:
adding iron powder and sodium dodecyl benzene sulfonate into water, stirring for reaction, adding graphene oxide, continuing stirring for reaction, filtering, and drying the obtained solid in vacuum to obtain the iron powder-graphene composite material.
9. A process for machining a die-cutting tool shaft according to any one of claims 1 to 8, wherein: which comprises the following steps:
1) mixing materials: mixing and grinding tungsten carbide, titanium carbide, carbonyl nickel powder, chromium powder, aluminum powder, molybdenum powder, carbon powder, iron powder, a grain inhibitor and an iron powder-graphene composite material in an absolute ethyl alcohol ball milling medium, and then carrying out vacuum drying, sieving and granulating to obtain a mixture;
2) pre-sintering: precisely pressing the mixture to obtain a blank, and then pre-sintering the blank;
3) coarse grinding: roughly processing the blank according to the sizes of the die-cutting tool shaft, and then roughly grinding and processing the diameter, the pattern and the margin of the edge width of the die-cutting tool shaft;
4) and (3) heat treatment processing: carrying out heat treatment processing on the processed blank obtained in the step 3);
5) fine grinding: and (4) carrying out fine grinding on the blank after the heat treatment processing, and processing the size, the pattern and the edge width allowance on the die cutting tool shaft to ensure that the edge width of the tool shaft is consistent, thus obtaining the die cutting tool shaft.
Technical Field
The application relates to the field of die cutting production and processing equipment, in particular to a die cutting tool shaft and a processing technology thereof.
Background
The traditional die cutting is a cutting process for the post processing of printed matters, and the die cutting process can manufacture printed matters or other paper products into a die cutting knife plate according to a pre-designed pattern for cutting, so that the shapes of the printed matters are not limited to straight edges and right angles any more. With the continuous development of the electronic industry, die cutting is widely applied in many fields, and the existing die cutting materials for processing include rubber, single-sided and double-sided adhesive tapes, foam, plastics, silicon, metal thin strips, metal sheets, protective films, hot melt adhesive tapes and the like.
The cutting process is commonly performed by a machine having a cutter and a cutter shaft, such as a double-drum flying shear, wherein the cutter is a flying shear, and when the flying shear is mounted, a cutting edge of the flying shear is mounted in a spiral groove of the cutter shaft, and the cutter shaft drives the flying shear to rotate, so that the material is cut.
In view of the above-mentioned related technologies, the inventor believes that, in the die cutting process, the cutter shaft rotates fast, and when the time is long, the cutter shaft is easy to deform due to insufficient hardness, poor wear resistance and the like, so that the service life of the cutter shaft is short.
Disclosure of Invention
In order to improve the hardness and the wear resistance of the cutter shaft and prolong the service life of the cutter shaft, the application provides a die-cutting cutter shaft and a processing technology thereof.
In a first aspect, the present application provides a mold cutting tool shaft, which adopts the following technical scheme:
a die-cutting tool shaft is prepared from the following raw materials in parts by weight: 240 parts of tungsten carbide 200-containing materials, 0.02-0.08 part of titanium carbide, 3-6 parts of nickel carbonyl powder, 4-6 parts of chromium powder, 2-5 parts of aluminum powder, 1-3 parts of molybdenum powder, 7-10 parts of carbon powder, 1-2.5 parts of grain inhibitor and 65-71 parts of iron powder-graphene composite material.
By adopting the technical scheme, tungsten carbide and titanium carbide are used as hard phases, carbonyl nickel powder, chromium powder, aluminum powder, carbon powder, iron powder-graphene composite material and molybdenum powder are used as binding phases, the addition of the grain inhibitor can not increase the granularity of the hard phases during ball milling of the hard phases, the addition of the graphene can improve various properties of the tool shaft by utilizing the excellent heat-conducting property and mechanical property of the graphene, the composition of the iron powder and the iron powder can improve the dispersion uniformity of the graphene, and the tool shaft with better hardness, bending strength and wear resistance is obtained, so that the service life of the tool shaft is prolonged.
Preferably, the die-cutting die shaft is prepared from the following raw materials in parts by weight: 230 parts of tungsten carbide 215-containing material, 0.04-0.06 part of titanium carbide, 4-5 parts of nickel carbonyl powder, 4.5-5.5 parts of chromium powder, 3-4 parts of aluminum powder, 1.5-2.5 parts of molybdenum powder, 8-9 parts of carbon powder, 67-69 parts of iron powder, 1-2.5 parts of grain inhibitor and 65-71 parts of iron powder-graphene composite material.
By adopting the technical scheme, the wear resistance and hardness of the cutter shaft can be further improved by optimizing the proportion of the raw materials.
Preferably, the grain inhibitor is prepared from the following raw materials in parts by weight: 2-5 parts of vanadium carbide, 1-3 parts of chromium carbide and 0.2-0.5 part of thallium carbide.
By adopting the technical scheme, the vanadium carbide, the chromium carbide and the thallium carbide are proportioned in a certain proportion, so that the granularity of the hard phase raw material is small, the granularity of the hard phase is a key factor influencing the mechanical property of the hard alloy, and the mechanical property of the tool shaft is good.
Preferably, the grain inhibitor is prepared from the following raw materials in parts by weight: 3-4 parts of vanadium carbide, 1-2 parts of chromium carbide and 0.3-0.4 part of thallium carbide.
By adopting the technical scheme, the wear resistance and hardness of the cutter shaft are further improved by optimizing the proportion of the raw materials.
Preferably, the addition weight part of the grain inhibitor is 1.5-2.0 parts.
Preferably, the iron powder-graphene composite material is prepared by adsorbing graphene oxide on the surface of iron powder, and the weight ratio of the iron powder to the graphene oxide is 50: (0.003-0.010).
Preferably, the weight ratio of the iron powder to the graphene oxide is 50: (0.005-0.07).
Preferably, the preparation method of the iron powder-graphene composite material is as follows:
adding iron powder and sodium dodecyl benzene sulfonate into water, stirring for reaction, adding graphene oxide, continuing stirring for reaction, filtering, and drying the obtained solid in vacuum to obtain the iron powder-graphene composite material.
By adopting the technical scheme, the sodium dodecyl benzene sulfonate is reacted with the iron powder to charge the surface of the iron powder, and then the charged surface of the iron powder and the graphene oxide are adsorbed on the surface of the iron powder through electrostatic attraction.
In a second aspect, the present application provides a process for machining a mold-cutting tool shaft, which employs the following scheme:
a processing technology of a die-cutting tool shaft is characterized in that: which comprises the following steps:
1) mixing materials: mixing and grinding tungsten carbide, titanium carbide, carbonyl nickel powder, chromium powder, aluminum powder, molybdenum powder, carbon powder, iron powder, a grain inhibitor and an iron powder-graphene composite material in an absolute ethyl alcohol ball milling medium, and then carrying out vacuum drying, sieving and granulating to obtain a mixture;
2) pre-sintering: precisely pressing the mixture to obtain a blank, and then pre-sintering the blank;
3) coarse grinding: roughly processing the blank according to the sizes of the die-cutting tool shaft, and then roughly grinding and processing the diameter, the pattern and the margin of the edge width of the die-cutting tool shaft;
4) and (3) heat treatment processing: carrying out heat treatment processing on the processed blank obtained in the step 3);
5) fine grinding: and (4) carrying out fine grinding on the blank after the heat treatment processing, and processing the size, the pattern and the edge width allowance on the die cutting tool shaft to ensure that the edge width of the tool shaft is consistent, thus obtaining the die cutting tool shaft.
Through adopting above-mentioned technical scheme, through compounding, suppression, can obtain the blank, then carry out the presintering to the blank, can make the hardness of blank tentatively improve, then carry out the corase grind to it, carry out thermal treatment again and process, make its hardness further improve, carry out the correct grinding again, can obtain die-cutting cutter axle.
In summary, the present application has the following beneficial effects:
1. tungsten carbide and titanium carbide are used as hard phases, carbonyl nickel powder, chromium powder, aluminum powder, carbon powder, an iron powder-graphene composite material and molybdenum powder are used as binding phases, the addition of a grain inhibitor can prevent the granularity of the hard phases from increasing during ball milling of the hard phases, the addition of graphene can utilize the excellent heat-conducting property and mechanical property of the graphene to improve various properties of the cutter shaft, the iron powder is compounded with the graphene to improve the dispersion uniformity of the graphene, and the cutter shaft with better hardness, bending strength and wear resistance is obtained, so that the service life of the cutter shaft is prolonged.
2. The bending strength of the die shaft of the die cutting tool is above 2580MPa, the hardness is over 89.4HRA, the porosity is excellent, and the abrasion loss is below 1.3204.
Detailed Description
The present application will be described in further detail with reference to examples.
Raw materials
Tungsten carbide: the manufacturer is Ganzhou Pin Xin tungsten molybdenum material Co., Ltd, and the grain diameter is 1-2 μm;
titanium carbide: the manufacturer is Zhongnuo New materials (Beijing) science and technology limited company, and the product number is Ti 52307;
carbonyl nickel powder: the manufacturer is Jilin Zong Innovative materials Co, Ltd, and the product number is JCN 1-1.
Preparation example
Preparation example 1
An iron powder-graphene composite material is prepared by the following steps:
1) adding 50kg of iron powder and 500g of sodium dodecyl benzene sulfonate into 100kg of water, and stirring for reacting for 1 hour to obtain a mixed solution;
2) adding 0.003kg of graphene oxide into 2kg of water, stirring for 1h, and performing ultrasonic dispersion for 20min to obtain a graphene oxide dispersion liquid;
3) adding the graphene oxide dispersion liquid into the mixed liquid obtained in the step 1), stirring and reacting for 0.5h, filtering to obtain a solid, washing with distilled water for 3 times, and drying in vacuum to obtain the iron powder-graphene composite material.
Preparation example 2
An iron powder-graphene composite material is different from that of preparation example 1 in that the amount of graphene oxide in step 2) is 0.005kg, and the rest of the steps are the same as those of preparation example 1.
Preparation example 3
An iron powder-graphene composite material is different from that of preparation example 1 in that the amount of graphene oxide in step 2) is 0.007kg, and the rest of the steps are the same as those of preparation example 1.
Preparation example 4
An iron powder-graphene composite material is different from that of preparation example 1 in that the amount of graphene oxide in step 2) is 0.010kg, and the rest of the steps are the same as those of preparation example 1.
Preparation examples 5 to 8
The crystal grain inhibitor of preparation examples 5-8, which uses the raw materials and the raw materials shown in Table 1, is prepared by the following steps:
weighing vanadium carbide, chromium carbide and thallium carbide according to the dosage in the table 1, and then mixing and uniformly stirring the materials to obtain the crystal grain inhibitor.
TABLE 1 preparation examples 5-8 materials and amounts (kg) of materials
Preparation example 5
Preparation example 6
Preparation example 7
Preparation example 8
Vanadium carbide
2
3
4
5
Chromium carbide
3
2
1
1
Thallium carbide
0.2
0.3
0.4
0.5
Examples
Examples 1 to 4
The die-cutting tool shaft of examples 1 to 4, whose raw materials and amounts of the raw materials are shown in table 2, was prepared by the following steps:
1) mixing materials: mixing and grinding tungsten carbide, titanium carbide, carbonyl nickel powder, chromium powder, aluminum powder, molybdenum powder, carbon powder, iron powder, a grain inhibitor and an iron powder-graphene composite material in an absolute ethyl alcohol ball-milling medium for 2 hours, then adding slurry of paraffin, and performing vacuum drying, sieving and granulation to obtain a wax-doped mixture, wherein the grain diameter of the mixture is 1-4 mu m;
2) pre-sintering: precisely pressing the wax-doped mixture to obtain a blank, then presintering at 900 ℃ in a nitrogen atmosphere, keeping the temperature for 80min, and cooling along with a furnace;
3) coarse grinding: roughly processing the blank after the pre-sintering according to the sizes of the die-cutting tool shaft, and then roughly grinding and processing the diameter, the pattern and the margin of the edge width of the die-cutting tool shaft;
4) and (3) heat treatment processing: preserving the heat of the processed blank obtained in the step 3) for 1.5 hours at 1300 ℃ in a vacuum state, cooling along with the furnace, and then tempering twice, wherein the tempering temperature is 550 ℃, the heat preservation time is 2 hours, and the heat preservation time is furnace cooling;
5) fine grinding: and (4) carrying out fine grinding on the blank after the heat treatment processing, and processing the size, the pattern and the edge width allowance on the die cutting tool shaft to ensure that the edge width of the tool shaft is consistent, thus obtaining the die cutting tool shaft.
Wherein the iron powder-graphene composite material is prepared from preparation example 1, and the grain inhibitor is prepared from preparation example 5.
TABLE 2 materials and amounts (kg) of materials of examples 1-4
Example 1
Example 2
Example 3
Example 4
Tungsten carbide
200
215
230
240
Titanium carbide
0.08
0.6
0.04
0.02
Nickel carbonyl powder
3
4
5
6
Chromium powder
6
5.5
4.5
4
Aluminum powder
2
3
4
5
Molybdenum powder
3
2.5
1.5
1
Carbon powder
7
8
9
10
Iron powder-graphene composite material
71
69
67
65
Grain inhibitor
1
1.5
2.0
2.5
Example 5
A die-cutting tool shaft, which is different from example 3 in that the iron powder-graphene composite material added thereto was obtained from preparation example 2, and the rest of the procedure was the same as in example 3.
Example 6
A die-cutting tool shaft, which is different from example 3 in that the iron powder-graphene composite material added thereto is from preparation example 3, and the rest of the procedure is the same as example 3.
Example 7
A die-cutting tool shaft, which is different from example 3 in that the iron powder-graphene composite material added thereto was obtained from preparation example 4, and the rest of the procedure was the same as in example 3.
Example 8
A die cutting tool shaft was different from example 6 in that a grain inhibitor was added from preparation example 6, and the rest of the procedure was the same as in example 6.
Example 9
A die cutting tool shaft was different from example 6 in that the grain inhibitor added was derived from preparation example 7, and the rest of the procedure was the same as in example 6.
Example 10
A die cutting tool shaft was different from example 6 in that a grain inhibitor was added from preparation example 8 and the rest of the procedure was the same as in example 6.
Example 11
A die shaft was different from example 9 in that the amount of the grain inhibitor added was 1kg, and the rest of the procedure was the same as in example 9.
Example 12
A die shaft was different from example 9 in that a grain inhibitor was added in an amount of 1.5kg, and the rest of the procedure was the same as in example 9.
Example 13
A die shaft was different from example 12 in that a grain inhibitor was added in an amount of 2.5kg, and the rest of the procedure was the same as in example 9.
Comparative example
Comparative example 1
A die-cutting tool shaft, which is different from that in example 3 in that the iron powder-graphene composite material added thereto is replaced by equal-mass iron powder, and the rest steps are the same as those in example 3.
Comparative example 2
A die-cutting die shaft, which is different from that in example 3 in that the iron powder-graphene composite material added is replaced by iron powder and graphene oxide, the addition amount of the iron powder is the same as the iron powder content in the iron powder-graphene composite material added, the addition amount of the graphene oxide is the same as the graphene oxide content in the iron powder-graphene composite material added, and the rest steps are the same as those in example 3.
Comparative example 3
A die cutting tool shaft was different from example 3 in that a grain inhibitor was added in an amount of 0, and the rest of the procedure was the same as in example 3.
Comparative example 4
A die-cutting tool shaft was different from example 3 in that the added grain-inhibiting agent was replaced with vanadium carbide of equal mass, and the rest of the procedure was the same as in example 3.
Comparative example 5
A die-cutting tool shaft was different from example 3 in that the grain inhibitor added was replaced with chromium carbide of equal mass, and the rest of the procedure was the same as in example 3.
Comparative example 6
A die cutting tool shaft was different from example 3 in that the grain inhibitor added was replaced with thallium carbide of equal mass, and the rest of the procedure was the same as in example 3.
Performance test
Detection method/test method
The molding tool shafts obtained in examples 1 to 13 and comparative examples 1 to 6 were randomly drawn and tested for their properties as follows, and the tests are shown in Table 3.
Bending strength: detecting according to the method in GB/T3851-2015;
hardness: the measurement was carried out according to the Rockwell and Vickers methods;
porosity: detecting according to the method in GB/T3489-2015;
wear loss: the test was carried out according to the method of GB/T34501-2017, wherein the rotating wheel was a steel wheel, the load was 130N, the speed was 1m/s, the abrasive flow rate through the contact surface was 150g/min, and the test time was 20 min. The lower the wear, the better the wear resistance of the die shaft.
TABLE 3 test results of the die shafts of examples 1 to 13 and comparative examples 1 to 6
Bending strength (MPa)
Hardness (HRA)
Porosity of
Amount of wear (g)
Example 1
2580
89.4
A02B00
1.3204
Example 2
2585
89.8
A02B00
1.3113
Example 3
2610
89.9
A02B00
1.3096
Example 4
2590
89.5
A02B00
1.3210
Example 5
2613
90.0
A02B00
1.3088
Example 6
2620
90.2
A02B00
1.3031
Example 7
2609
89.9
A02B00
1.3095
Example 8
2625
90.3
A02B00
1.3007
Example 9
2631
90.6
A02B00
1.2891
Example 10
2610
90.1
A02B00
1.3060
Example 11
2621
90.2
A02B00
1.3029
Example 12
2642
90.9
A02B00
1.2173
Example 13
2640
90.8
A02B00
1.2184
Comparative example 1
2510
88.6
A02B00
1.5217
Comparative example 2
2514
88.7
A02B00
1.5205
Comparative example 3
2368
85.3
A02B00
2.0104
Comparative example 4
2402
88.4
A02B00
1.5302
Comparative example 5
2410
88.5
A02B00
1.5238
Comparative example 6
2398
88.3
A02B00
1.5339
Combining the data of examples 1-13, comparative examples 1-6 and table 3, it can be seen that the bending strength of the die shaft of the present application is 2580MPa or more, the hardness exceeds 89.4HRA, the porosity is excellent, and the wear loss is 1.3204 or less.
As can be seen from the detection data of the examples 3 and 5 to 7, the die-cutting tool shaft obtained by adding the iron powder-graphene composite materials of the preparation examples 2 to 3 has better performance.
As can be seen from the test data of example 6 and examples 8-10, the mold shafts prepared in preparation examples 6-7 all showed excellent properties.
It can be seen from the test data of examples 9 and 11 to 13 that when the amount of the grain-inhibiting agent added is too large or too small, the performance of the die shaft obtained therefrom is somewhat lowered.
As can be seen from the data of example 3 and comparative examples 1 to 2, the addition of graphene is helpful for improving various mechanical properties of the tool shaft, but when graphene oxide is adsorbed on the surface of iron powder particles, the tool shaft has excellent properties, which indicates that the addition of graphene oxide by adsorbing on the surface of iron powder is beneficial for uniformly dispersing graphene in the tool shaft, thereby improving various properties of the tool shaft.
It can be seen from the test data of example 3 and comparative examples 3 to 6 that the addition of the grain inhibitor can effectively prevent the raw material grains of the tool shaft from becoming larger, so that the various properties of the tool shaft are better, but the various properties of the tool shaft are poorer when the vanadium carbide, the chromium carbide or the thallium carbide is added alone, which indicates that the three raw materials of the grain inhibitor have a synergistic effect.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.