Method for preparing hot casting mold

A mold and cork powder technology, which is applied in the field of hot casting mold preparation, can solve the problems of increased production cost, increased burden on enterprises, complicated process, etc., and achieves the effects of prolonging service life, reducing production cost and improving economic benefits.

Inactive Publication Date: 2015-06-03
昆山迪赛斯恩模具设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hot work die steel is an important type of die material. Since hot work dies work at high temperatures for a long time, their structure will change as the service time prolongs, and their performance will change accordingly. Therefore, this requires Hot work die steel has good strength and toughness, cold and heat fatigue performance and high temperature thermal stability, etc., but the existing hot work casting dies have complicated production processes, which greatly increase production costs and increase the burden on enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for preparing a hot casting mold, using 20 parts by weight of cork powder, 12 parts by weight of rare earths, 4 parts by weight of porcelain powder, 3 parts by weight of gypsum powder, and 15 parts by weight of silica gel as raw materials. The particle size of the cork powder is 450 mesh, including the following process steps:

[0016] a. First add 20 parts by weight of cork powder, 4 parts by weight of porcelain powder and parts by weight of gypsum powder to the mixer for mixing to form a mixture;

[0017] b. Heat the mixture formed in step a, and control the temperature at 70°C. During the heating process, slowly add silica gel and stir evenly. After the silica gel is added, add rare earths at the end, and increase the temperature at a rate of 5°C / h. When the temperature rises to 120°C, stop heating and keep it warm for 3 hours;

[0018] c. Injection molding of the mixed material completed with heat preservation in step b, and cooling to room temperature to obtain ...

Embodiment 2

[0020] A method for preparing a hot casting mold, using 25 parts by weight of cork powder, 13 parts by weight of rare earth, 5 parts by weight of quartz, 4 parts by weight of gypsum powder, and 16 parts by weight of silica gel as raw materials, and the particle size of the cork powder is 480 Project, including the following process steps:

[0021] a. First add 25 parts by weight of cork powder, 5 parts by weight of quartz and 4 parts by weight of gypsum powder into the mixer to mix to form a mixture;

[0022] b. Heat the mixture formed in step a, and control the temperature at 75°C. During the heating process, slowly add silica gel and stir evenly. After the silica gel is added, add rare earths at the end, and heat up at a rate of 7°C / h. When the temperature rises to 135°C, stop heating and keep it warm for 4 hours;

[0023] c. Injection molding of the mixed material completed with heat preservation in step b, and cooling to room temperature to obtain a finished product.

Embodiment 3

[0025] A method for preparing a hot casting mold, using 30 parts by weight of cork powder, 15 parts by weight of rare earth, 6 parts by weight of alumina, 5 parts by weight of gypsum powder, and 18 parts by weight of silica gel as raw materials. The particle size of the cork powder is 500 mesh, including the following process steps:

[0026] a. First add 30 parts by weight of cork powder, 6 parts by weight of alumina and 5 parts by weight of gypsum powder into the mixer for mixing to form a mixture;

[0027] b. Heat the mixture formed in step a, and the temperature is controlled at 80°C. During the heating process, slowly add silica gel and stir evenly. After the silica gel is added, add rare earth at the end, and increase the temperature at a rate of 8°C / h. When the temperature rises to 150°C, stop heating and keep warm for 5 hours;

[0028] c. Injection molding of the mixed material completed with heat preservation in step b, and cooling to room temperature to obtain a finished pr...

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Abstract

The invention discloses a method for preparing a hot casting mold. Cork powder, rare earth, ceramic aggregate, gypsum powder and silica gel are taken as raw materials. The method comprises the following process steps: (a), adding the cork powder, ceramic aggregate and gypsum powder into a stirrer for mixing, thereby forming a mixture; (b), heating the mixture formed in the step (a), controlling the temperature to be 70-80 DEG C, slowly adding silica gel in the heating process, uniformly stirring, finally adding the rare earth after the silica gel addition is finished, heating at a speed of 5-8 DEG C per hour, stopping heating when the temperature rises to 120-150 DEG C, and preserving the temperature for 3-5 hours; and (c) performing injection molding on the mixture subjected to complete heat preservation in the step (b), cooling to room temperature, thereby obtaining the finished product. The method disclosed by the invention has the beneficial effects that the production process is simple and reliable, the manufactured mold is stable in performance, the toughness and hardness are enhanced by virtue of the added silica gel and ceramic aggregate, the service life can be greatly prolonged, the production cost is reduced, and the economical benefits are improved.

Description

Technical field [0001] The invention relates to a method for preparing a mold, in particular to a method for preparing a hot casting mold. Background technique [0002] Molded parts have a series of advantages such as high production efficiency, good quality, material saving and low cost, and the application range is extremely wide. Hot work die steel is an important type of mold material. Since hot work die works for a long time at high temperature, its structure will change with the extension of service time, and its performance will change accordingly. Therefore, this requires Hot work die steel has good strength and toughness, cold and heat fatigue properties and high temperature thermal stability, but the existing hot work casting die has a complicated process in the production process, which greatly increases production costs and burdens enterprises. [0003] Therefore, in order to solve the above problems, a new technical solution is provided. Summary of the invention [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/24C04B28/14
Inventor 高明刘朋
Owner 昆山迪赛斯恩模具设计有限公司
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