Graphite product and its preparation method

A technology of graphite products and graphite powder, which is used in special containers for baking, special materials for cooking utensils, kitchen utensils, etc., can solve the problems of low thermal diffusivity and thermal conductivity, low thermal expansion coefficient, and large thermal expansion coefficient. Effects of high thermal diffusivity and thermal conductivity, low thermal expansion coefficient, and improved surface accuracy grade

Inactive Publication Date: 2019-09-10
佛山市巴伦亚合金材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Pots are the most commonly used household utensils in people's daily life. Most of the pots on the market are iron pots, but they have the disadvantages of small heat-resistant range, large thermal expansion coefficient, small thermal diffusivity and thermal conductivity; there are also pots made of ceramics. Although the ceramic pot has high thermal conductivity and small thermal expansion coefficient, its heat resistance range is small and it is easy to break; heat insensitive

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  • Graphite product and its preparation method
  • Graphite product and its preparation method

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preparation example Construction

[0019] The invention provides a kind of preparation method of graphite product, comprises the steps:

[0020] S1: Pulverize the graphite material until the particle size is less than 100 μm, and then mix it with the binder in a mass ratio of 100:(5-10);

[0021] S2: Put the mixture obtained in step S1 into a molding mold, heat to 50-100°C for rigid molding, and the time for rigid molding is 25-35 minutes; wherein, the molding mold includes: wok mold, soup pot mold, pancake pan One or more of molds and grill pan molds;

[0022] S3: Take out the molded product obtained in step S2, and then carry out hot-press sintering to obtain graphite products; wherein, hot-press sintering includes the first heating process, the second heating and pressure raising process, constant temperature and constant pressure process and cooling process in sequence: the first heating process In the middle, the mechanical pressure is 20-22MPa, and the temperature is raised to 2500°C at a heating rate of...

Embodiment 1

[0029] The present embodiment provides a kind of preparation method of graphite product, comprises the steps:

[0030] S1: Pulverize the graphite material (graphite powder) to a particle size of less than 100 μm, and then mix it evenly with the binder at a mass ratio of 100:5;

[0031] S2: Put the mixture obtained in step S1 into the forming soup pot mold, heat to 50°C for rigid molding, and the time for rigid molding is 25 minutes;

[0032] S3: Take out the molded product obtained in step S2, and then carry out hot-press sintering to obtain graphite products; wherein, hot-press sintering includes the first heating process, the second heating and pressure raising process, constant temperature and constant pressure process and cooling process in sequence: the first heating process In the process, the mechanical pressure is 20MPa, and the temperature is raised to 2500°C at a heating rate of 20°C / min; during the second temperature rise and pressure increase and constant temperatu...

Embodiment 2

[0034] The present embodiment provides a kind of preparation method of graphite product, comprises the steps:

[0035] S1: Pulverize the graphite material (graphite powder) to a particle size of less than 100 μm, and then mix it with the binder at a mass ratio of 100:10;

[0036] S2: put the mixture obtained in step S1 into a forming soup pot mold, heat to 100°C for rigid molding, and the time for rigid molding is 35 minutes;

[0037]S3: Take out the molded product obtained in step S2, and then carry out hot-press sintering to obtain graphite products; wherein, hot-press sintering includes the first heating process, the second heating and pressure raising process, constant temperature and constant pressure process and cooling process in sequence: the first heating process In the middle, the mechanical pressure is 22MPa, and the temperature is raised to 2500°C at a heating rate of 40°C / min; during the second temperature rise and pressure increase and constant temperature and pr...

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Abstract

The invention relates to a graphite product and a preparation method thereof. The preparation method comprises the following steps of: S1, crushing a graphite material, and then mixing the crushed graphite material with adhesive evenly; S2, putting the mixture obtained in the step S1 into a shaping mold, raising the temperature to 50-100 DEG C, and conducting rigid mold pressing; S3, taking out the mold product obtained in the step S2, and conducting hot-press sintering to obtain the graphite product. The prepared graphite product has the advantages of being large in density, high in surface precision, small in thermal expansion coefficient, high in thermal diffusivity and thermal conductivity, fast in heat transfer, good in compression and fracture resistance and the like, and the preparation method has the advantages of being simple and low in production cost.

Description

technical field [0001] The invention relates to the technical field of graphite materials, in particular to a graphite product and a preparation method thereof. Background technique [0002] Graphite (graphite) is a crystalline carbon, hexagonal crystal system, iron black to dark gray; soft, greasy, and conductive. Pots are the most commonly used household utensils in people's daily life. Most of the pots on the market are iron pots, but they have the disadvantages of small heat-resistant range, large thermal expansion coefficient, small thermal diffusivity and thermal conductivity; there are also pots made of ceramics. Although the ceramic pot has high thermal conductivity and small thermal expansion coefficient, its heat resistance range is small and it is easy to break; Heat insensitive. Therefore, it is also necessary to develop pot products with excellent comprehensive properties to meet the needs of consumers. Contents of the invention [0003] In view of the defe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/528C04B35/626C04B35/645A47J36/04A47J37/01
Inventor 卢成文
Owner 佛山市巴伦亚合金材料科技有限公司
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