阅读说明：本技术 玻璃制品生产用软化垫片及其制作方法 (Softening gasket for glass product production and manufacturing method thereof ) 是由 王健强 王乃帅 祝思忠 于 2021-04-20 设计创作，主要内容包括：本发明属于玻璃生产辅助用具领域,具体公开了一种使用寿命较长的玻璃制品生产用软化垫片,以及上述玻璃制品生产用软化垫片的制作方法。该玻璃制品生产用软化垫片,包括垫片基体,垫片基体的表面设置有基体保护层。该软化垫片采用特定性能的金属材料制作的垫片基体,能够满足玻璃坯料软化过程中对软化垫片热膨胀、导热、硬度及使用温度等性能的需求；通过在垫片基体的表面上设置热膨胀系数与垫片基体的热膨胀系数相匹配、且材质硬度高于垫片基体的材质硬度的基体保护层,能够有效保护垫片基体,一方面可避免垫片基体在高温使用过程中被氧化,另一方面能够减少垫片粘模、开裂等现象,提高了该软化垫片的使用寿命,并利于连续生产。(The invention belongs to the field of auxiliary tools for glass production, and particularly discloses a softening gasket for glass product production, which has a long service life, and a manufacturing method of the softening gasket for glass product production. The softening gasket for producing the glass product comprises a gasket base body, wherein a base body protective layer is arranged on the surface of the gasket base body. The softening gasket is a gasket matrix made of metal materials with specific properties, and can meet the requirements on the properties of thermal expansion, heat conduction, hardness, use temperature and the like of the softening gasket in the softening process of the glass blank; through set up thermal expansion coefficient and the base member protective layer of the thermal expansion coefficient phase-match of gasket base member, and the material hardness is higher than the material hardness of gasket base member on the surface of gasket base member, can effectively protect the gasket base member, can avoid the gasket base member to be oxidized in high temperature use on the one hand, and on the other hand can reduce phenomenons such as gasket sticking, fracture, has improved the life of this softening gasket to do benefit to continuous production.)

1. Softening gasket is used in glassware production, its characterized in that: the gasket comprises a gasket base body (10), wherein a base body protective layer (20) is arranged on the surface of the gasket base body (10);

the gasket base body (10) is made of metal, and the thermal expansion coefficient of the gasket base body is less than or equal to 10 multiplied by 10^-6The temperature is higher than or equal to 50W/(m.K), the hardness is higher than or equal to HRC40, and the maximum allowable use temperature is higher than or equal to 600 ℃;

the base protection layer (20) is made of nonmetal materials, the thermal expansion coefficient of the base protection layer (20) is matched with that of the gasket base body (10), and the hardness of the base protection layer (20) is higher than that of the gasket base body (10).

2. The softening gasket for glass article production of claim 1, wherein: the gasket base body (10) is made of tungsten-nickel-iron hard alloy, and the tungsten-nickel-iron hard alloy comprises, by weight, 90-97% of tungsten, 2.1-7% of nickel and 0.9-3% of iron.

3. The softening gasket for glass article production of claim 1, wherein: a groove (11) is formed in the surface of one side of the gasket base body (10).

4. The softening gasket for glass article production of claim 2, wherein: the groove (11) is a through groove arranged along the length direction of the gasket base body (10), and the cross section of the groove (11) is arc-shaped.

5. The softening gasket for glass article production of claim 1, wherein: the base protection layer (20) is made of alumina, and is formed by sintering alumina powder at the molding sintering temperature of 1400-1500 ℃ and then spraying the alumina powder on the surface of the gasket base body (10).

6. The softening pad for glass article production according to any one of claims 1 to 5, wherein: the surface of the base protection layer (20) is provided with a high temperature resistant layer, the thermal expansion coefficient of the high temperature resistant layer is matched with that of the base protection layer (20), and the maximum heat-resistant temperature of the high temperature resistant layer is more than or equal to 1300 ℃.

7. The softening pad for glass article production of claim 6, wherein: the high-temperature resistant layer is made of inorganic high-temperature resistant glue.

8. The manufacturing method of the softening gasket for producing the glass product is characterized by comprising the following steps of: the method is used for manufacturing the softening gasket for producing the glass product, which is disclosed by any one of claims 1 to 7, and comprises the following steps:

step one, selecting a thermal expansion coefficient less than or equal to 10 multiplied by 10^-6Manufacturing a gasket base body (10) by using a metal material with a heat conductivity of more than or equal to 50W/(m.K), a hardness of more than or equal to HRC40 and a maximum allowable use temperature of more than or equal to 600 ℃;

and secondly, passivating the surface of the gasket base body (10), and plating a non-metal material with a thermal expansion coefficient matched with that of the gasket base body (10) and hardness higher than that of the gasket base body (10) on the passivated surface of the gasket base body (10) to form a base body protective layer (20).

9. The method of making a softening pad for use in the production of glass articles of claim 8, wherein: in the first step, the selected metal material is a tungsten-nickel-iron hard alloy, and the tungsten-nickel-iron hard alloy comprises, by weight, 90-97% of tungsten, 2.1-7% of nickel and 0.9-3% of iron; in the second step, carborundum with the granularity diameter of 0.5-1.5 mm is adopted to carry out sand blasting passivation on the surface of the gasket base body (10); and in the second step, the selected non-metal material is alumina powder, the alumina powder is sintered at the molding sintering temperature of 1400-1500 ℃, then is sprayed on the passivated surface of the gasket substrate (10) with the spraying thickness of 0.3-0.5 mm, and then is cooled to room temperature at the annealing rate of 15-20 ℃/h to form the substrate protective layer (20).

10. The method for manufacturing a softening gasket for glass product production according to claim 8 or 9, wherein: the method also comprises a third step;

polishing the surface of the base protection layer (20) by using abrasive paper with the granularity of 4000# to 6000#, and then coating inorganic high-temperature-resistant adhesive on the surface of the polished base protection layer (20); after the inorganic high-temperature-resistant adhesive is coated, the inorganic high-temperature-resistant adhesive is firstly insulated for 12-24 hours at room temperature, then insulated for 2 +/-0.5 hours at the temperature of 70-90 ℃, then insulated for 2 +/-0.5 hours at the temperature of 140-160 ℃, and finally air-cooled to room temperature to form a high-temperature-resistant layer.

Technical Field

The invention belongs to the field of auxiliary tools for glass production, and particularly relates to a softening gasket for glass product production and a manufacturing method thereof.

Background

At present, the aspheric surface different-temperature molding lighting lens has large temperature difference when a mold and a blank are molded, so that the softening of the glass blank is carried out in a ceramic gasket hot softening mode in the compression production process by utilizing a rapid prototyping technology (RP), but the ceramic gasket is easy to have the phenomena of mold sticking, cracking and the like in the use process due to the formula, the manufacturing mode, the manufacturing process and the like of the ceramic gasket material, the service life of the ceramic gasket is influenced, the use cost is high, and the continuous production is not facilitated; meanwhile, the ceramic gasket has the problem of surface powder falling in the use process, and the surface of the glass blank is easily covered with dust foreign matters in the high-temperature softening operation and the material pushing and forming process of the glass blank, so that the quality defect of the formed surface of the glass is caused, and the service life of a forming die is shortened.

Disclosure of Invention

The invention aims to solve the technical problem of providing a softening gasket for producing glass products, which has long service life.

The technical scheme adopted by the invention for solving the technical problems is as follows: the softening gasket for producing the glass product comprises a gasket base body, wherein a base body protective layer is arranged on the surface of the gasket base body;

the gasket base body is made of metal material, and the thermal expansion coefficient of the gasket base body is less than or equal to 10 multiplied by 10^-6The temperature is higher than or equal to 50W/DEG C, the heat conductivity coefficient is higher than or equal to 50W/DEG C, the hardness is higher than or equal to HRC40, and the maximum allowable use temperature is higher than or equal to 600 ℃;

the base protection layer is made of nonmetal materials, the thermal expansion coefficient of the base protection layer is matched with that of the gasket base body, and the hardness of the base protection layer is higher than that of the gasket base body.

Further, the gasket base body is made of tungsten-nickel-iron hard alloy, and the tungsten-nickel-iron hard alloy comprises, by weight, 90-97% of tungsten, 2.1-7% of nickel and 0.9-3% of iron.

Further, a groove is formed in one side surface of the gasket base body.

Further, the groove is a through groove arranged along the length direction of the gasket base body, and the cross section of the groove is arc-shaped.

Furthermore, the base protection layer is made of alumina, and is formed by sintering alumina powder at the molding sintering temperature of 1400-1500 ℃ and then spraying the alumina powder on the surface of the gasket base.

Furthermore, a high temperature resistant layer is arranged on the surface of the base protection layer, the thermal expansion coefficient of the high temperature resistant layer is matched with that of the base protection layer, and the maximum heat-resistant temperature of the high temperature resistant layer is more than or equal to 1300 ℃.

Further, the high-temperature resistant layer is made of inorganic high-temperature resistant glue.

The invention also provides a manufacturing method of the softening gasket for producing the glass product, which is used for manufacturing the softening gasket for producing the glass product and comprises the following steps:

step one, selecting a thermal expansion coefficient less than or equal to 10 multiplied by 10^-6Manufacturing a gasket substrate by using a metal material with a heat conductivity of more than or equal to 50W/(m.K), a hardness of more than or equal to HRC40 and a maximum allowable use temperature of more than or equal to 600 ℃;

and secondly, passivating the surface of the gasket matrix, and plating a non-metallic material with a thermal expansion coefficient matched with that of the gasket matrix and higher than that of the gasket matrix on the passivated surface of the gasket matrix to form a matrix protective layer.

Further, in the step one, the selected metal material is a tungsten-nickel-iron hard alloy, and the tungsten-nickel-iron hard alloy comprises, by weight, 90-97% of tungsten, 2.1-7% of nickel and 0.9-3% of iron; in the second step, carborundum with the granularity diameter of 0.5-1.5 mm is adopted to carry out sand blasting passivation on the surface of the gasket matrix; and in the second step, the selected non-metal material is alumina powder, the alumina powder is sintered at the molding sintering temperature of 1400-1500 ℃, then the spray coating is carried out on the passivated surface of the gasket substrate, the spray coating thickness is 0.3-0.5 mm, and then the substrate protective layer is formed by cooling the substrate protective layer to room temperature at the annealing speed of 15-20 ℃/h.

Further, the method also comprises a third step;

polishing the surface of the base protection layer by using abrasive paper with the granularity of 4000# to 6000#, and coating inorganic high-temperature-resistant adhesive on the surface of the polished base protection layer; after the inorganic high-temperature-resistant adhesive is coated, the inorganic high-temperature-resistant adhesive is firstly insulated for 12-24 hours at room temperature, then insulated for 2 +/-0.5 hours at the temperature of 70-90 ℃, then insulated for 2 +/-0.5 hours at the temperature of 140-160 ℃, and finally air-cooled to room temperature to form a high-temperature-resistant layer.

The invention has the beneficial effects that: the softening gasket is a gasket matrix made of metal materials with specific properties, and can meet the requirements on the properties of thermal expansion, heat conduction, hardness, use temperature and the like of the softening gasket in the softening process of the glass blank; through set up thermal expansion coefficient and the base member protective layer of the thermal expansion coefficient phase-match of gasket base member, and the material hardness is higher than the material hardness of gasket base member on the surface of gasket base member, can effectively protect the gasket base member, can avoid the gasket base member to be oxidized in high temperature use on the one hand, and on the other hand can reduce phenomenons such as gasket sticking, fracture, has improved the life of this softening gasket to do benefit to continuous production. The aluminum oxide powder is sintered and plated on the substrate protective layer formed on the surface of the substrate of the gasket by a specific process method, so that the high-temperature oxidation resistance and the high-temperature use strength of the softened gasket can be improved, the problems of powder falling, mold sticking and the like are basically avoided in the use process, the service life of the softened gasket is further prolonged, and the yield of the produced glass products is favorably ensured.

Drawings

FIG. 1 is a schematic diagram of the structure of the softening pad for producing glass products in the invention;

labeled as: gasket base 10, recess 11, base protection layer 20.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the softening gasket for producing glass products comprises a gasket base body 10, wherein a base body protective layer 20 is arranged on the surface of the gasket base body 10;

the gasket base body 10 is made of metal material, and the thermal expansion coefficient of the gasket base body is less than or equal to 10 multiplied by 10^-6The temperature is higher than or equal to 50W/(m.K), the hardness is higher than or equal to HRC40, and the maximum allowable use temperature is higher than or equal to 600 ℃;

the base protection layer 20 is made of a non-metal material, the thermal expansion coefficient of the base protection layer 20 is matched with that of the gasket base body 10, and the hardness of the base protection layer 20 is higher than that of the gasket base body 10.

The gasket base body 10 is a base material part of the softening gasket and is mainly used for meeting the requirements on the performances of the softening gasket such as thermal expansion, heat conduction, hardness, use temperature and the like in the softening process of the glass blank; the lower coefficient of thermal expansion can reduce the degree of thermal expansion of the gasket base 10 in the use process, so as to be beneficial to softening the glass blank and ensure the service life of the glass blank; the good heat conductivity coefficient is beneficial to transferring heat to the glass blank by the softening gasket in the using process so as to ensure the effectiveness of softening; the higher hardness can avoid the softened gasket from deforming in the use process so as to ensure the service life of the softened gasket; the maximum allowable use temperature is limited for ensuring the high-temperature use strength of the glass blank so as to be beneficial to softening the glass blank; the gasket base body 10 is preferably made of a metal material with the maximum allowable use temperature of 600-800 ℃.

The metal material for manufacturing the gasket base body 10 can be various, preferably, tungsten-nickel-iron hard alloy, and the weight percentage of each component in the tungsten-nickel-iron hard alloy is that the tungsten content is 90-97%, the nickel content is 2.1-7%, and the iron content is 0.9-3%. The tungsten-nickel-iron hard alloy not only meets the performance requirements, but also has the advantages of low cost, convenience in processing and control and the like.

In order to facilitate the observation of the softening of the glass material by the softening pad, as shown in fig. 1, a groove 11 is provided on one surface of the pad base 10. Preferably, the groove 11 is a through groove arranged along the length direction of the gasket base body 10, and the cross section of the groove 11 is arc-shaped. The groove 11 of the arc-shaped through groove structure is convenient for operators to quickly separate softened and shaped glass blanks from the softened gasket.

The substrate protective layer 20 is mainly used for protecting the gasket substrate 10, and on one hand, the gasket substrate 10 can be prevented from being oxidized in a high-temperature use process, and on the other hand, the phenomena of die sticking, cracking and the like of the gasket can be reduced; the substrate protection layer 20 can be arranged on the surface of the gasket substrate 10 by adopting various process methods such as hot pressing, sintering, spraying and the like; thermal expansion of the base protective layer 20The expansion coefficient is matched with the thermal expansion coefficient of the gasket base body 10, so that the consistency of expansion and contraction of the base body protective layer 20 and the gasket base body 10 in the use process can be ensured, and the falling-off of the base body protective layer and the gasket base body 10 is avoided; the thermal expansion coefficient of the general base protective layer 20 is less than or equal to 10 multiplied by 10^-6/deg.C, in order to ensure that the coefficient of thermal expansion of the substrate protective layer 20 matches that of the gasket substrate 10, the coefficients of thermal expansion should not differ by more than 0.5X 10^-6/° c; the hardness of the material of the substrate protection layer 20 is higher than that of the substrate 10 of the gasket, so that the substrate protection layer 20 can be effectively protected, and deformation of the softened gasket in the using process can be further avoided.

The non-metallic material for making the substrate protection layer 20 may be various, preferably alumina, which not only meets the above performance requirements, but also has the advantages of high temperature oxidation resistance, high temperature resistance, acid and alkali corrosion resistance, and the like. The substrate protection layer 20 made of alumina is usually formed by sintering alumina powder at a molding sintering temperature of 1400-1500 ℃ and then spraying the alumina powder on the surface of the gasket substrate 10.

In order to increase the service temperature of the softening pad, it is preferable that a high temperature resistant layer is further provided on the surface of the base protective layer 20, the thermal expansion coefficient of the high temperature resistant layer matches with that of the base protective layer 20, and the maximum heat resistant temperature of the high temperature resistant layer is not less than 1300 ℃. The thermal expansion coefficient of the high temperature resistant layer is matched with that of the base protective layer 20, so that the consistency of expansion and contraction of the high temperature resistant layer and the base protective layer 20 in the use process can be ensured, and the high temperature resistant layer and the base protective layer 20 are prevented from falling off; the thermal expansion coefficient of the general high temperature resistant layer is less than or equal to 10 multiplied by 10^-6/deg.C, in order to ensure that the thermal expansion coefficient of the high temperature resistant layer matches that of the base protective layer 20, the two thermal expansion coefficients should not differ by more than 0.5 × 10^-6/℃。

The high temperature resistant layer can be made of various materials, and is preferably made of inorganic high temperature resistant glue. The high temperature resistant layer made of the inorganic high temperature resistant glue has the characteristics of oil resistance, acid and alkali resistance and the like besides the highest heat resistant temperature of 1300 ℃, and has a good use effect.

The invention also provides a manufacturing method of the softening gasket for producing the glass product, which is used for manufacturing the softening gasket for producing the glass product and comprises the following steps:

step one, selecting a thermal expansion coefficient less than or equal to 10 multiplied by 10^-6Manufacturing the gasket base body 10 by using a metal material with the heat conductivity coefficient of more than or equal to 50W/m.K, the hardness of more than or equal to HRC40 and the maximum allowable use temperature of more than or equal to 600 ℃; the gasket base body 10 can be machined or manufactured by pressing and forging;

and secondly, passivating the surface of the gasket base body 10, and plating a non-metallic material with a thermal expansion coefficient matched with that of the gasket base body 10 and hardness higher than that of the gasket base body 10 on the passivated surface of the gasket base body 10 to form a base body protective layer 20.

Preferably, in the step one, the selected metal material is a tungsten-nickel-iron hard alloy, and the weight percentage of each component in the tungsten-nickel-iron hard alloy is 90-97% of tungsten, 2.1-7% of nickel and 0.9-3% of iron.

In the second step, the surface of the gasket base body 10 is passivated, which is mainly used for facilitating plating to form a base body protective layer 20, and ensuring that the base body protective layer 20 and the gasket base body 10 are effectively combined together; and in the second step, carborundum with the granularity diameter of 0.5-1.5 mm is adopted to carry out sand blasting passivation on the surface of the gasket base body 10.

In order to manufacture the softening gasket with better high-temperature oxidation resistance and high-temperature service performance, in the second step, alumina powder is preferably used as a non-metallic material, the alumina powder is sintered at the molding sintering temperature of 1400-1500 ℃, then is sprayed on the passivated surface of the gasket substrate 10, the spraying thickness is 0.3-0.5 mm, and then the substrate is cooled to room temperature at the annealing rate of 15-20 ℃/h to form the substrate protective layer 20. The room temperature is 20-25 ℃.

As a preferred scheme of the invention, the manufacturing method of the softening gasket for producing the glass product also comprises a third step;

polishing the surface of the base protection layer 20 by using abrasive paper with the granularity of 4000# to 6000#, and painting inorganic high-temperature-resistant adhesive on the surface of the polished base protection layer 20; after the inorganic high-temperature-resistant adhesive is coated, the inorganic high-temperature-resistant adhesive is firstly insulated for 12-24 hours at room temperature, then insulated for 2 +/-0.5 hours at the temperature of 70-90 ℃, then insulated for 2 +/-0.5 hours at the temperature of 140-160 ℃, and finally air-cooled to room temperature to form a high-temperature-resistant layer.

Example 1

The process of making a softened shim at one time is as follows:

firstly, selecting a tungsten-nickel-iron hard alloy to manufacture a gasket substrate 10, wherein the tungsten content is 90%, the nickel content is 7% and the iron content is 3% in percentage by weight;

secondly, firstly adopting carborundum with the granularity diameter of 0.5mm to carry out sand blasting passivation on the surface of the gasket matrix 10, then selecting alumina powder, sintering the alumina powder at the molding sintering temperature of 1400 ℃, then spraying the alumina powder on the passivated surface of the gasket matrix 10 with the spraying thickness of 0.3mm, and then cooling the surface to room temperature at the annealing speed of 15 ℃/h to form a matrix protective layer 20, thus obtaining the softened gasket.

The prepared softening gasket is applied to the production process of the aspheric lighting lens to soften the glass blank, and the phenomena of die sticking, cracking, powder falling and the like do not occur; and compared with a ceramic gasket, the defect rate of the produced aspheric illuminating lens is reduced by 7%.

Example 2

The process of making a softened shim at one time is as follows:

firstly, selecting a tungsten-nickel-iron hard alloy to manufacture a gasket substrate 10, wherein the tungsten content, the nickel content and the iron content are 97%, 2.1% and 0.9% respectively;

secondly, firstly adopting carborundum with the granularity diameter of 1mm to carry out sand blasting passivation on the surface of the gasket matrix 10, then selecting alumina powder, sintering the alumina powder at the molding sintering temperature of 1500 ℃, then spraying the alumina powder on the passivated surface of the gasket matrix 10 with the spraying thickness of 0.5mm, and then cooling the surface to room temperature at the annealing rate of 20 ℃/h to form a matrix protective layer 20;

polishing the surface of the base protection layer 20 by using sand paper with the grain size of 5000#, and painting inorganic high-temperature-resistant glue on the surface of the polished base protection layer 20; after the inorganic high-temperature-resistant adhesive is coated, the inorganic high-temperature-resistant adhesive is firstly insulated for 20 hours at room temperature, then insulated for 2 hours at the temperature of 80 ℃, then insulated for 2 hours at the temperature of 150 ℃, and finally air-cooled to room temperature to form a high-temperature-resistant layer, so that the softening gasket is prepared.

The prepared softening gasket is applied to the production process of the aspheric lighting lens to soften the glass blank, and the phenomena of die sticking, cracking, powder falling and the like do not occur; and compared with a ceramic gasket, the defect rate of the produced aspheric illuminating lens is reduced by 9 percent.