Unlock instant, AI-driven research and patent intelligence for your innovation.

Metal-ceramic compound casting mold capable of resisting high temperature

A metal-ceramic composite, casting mold technology, applied in the field of casting mold processing, can solve the problems of coarse grains, poor thermal crack resistance, dendrite segregation, etc., and achieve the effect of surface finish, high dimensional accuracy, and excellent mechanics.

Inactive Publication Date: 2018-04-20
蚌埠市宏大制药机械有限公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor thermal cracking resistance of casting molds during high temperature pouring, internal defects are prone to appear, such as dendrite segregation, coarse grains, looseness, shrinkage cavities, etc. These defects will lead to a significant drop in the pass rate of casting products

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A high-temperature resistant metal-ceramic composite casting mold, in which 1.5% by mass of ceramic components and 0.5% by mass of binder are added to the mold steel material. When mixed with the mold steel, use dimethyl disulfide Diphenylthiuram is used as a catalyst, the ceramic components and binder are heated at 1100°C for 3 hours and then put into the molten metal for grouting and gluing;

[0014] The preparation method of the ceramic component is as follows: soak the silicon carbide particles in a saturated sodium hydroxide solution at 100°C for 30 minutes, then use an acetone solution for ultrasonic cleaning for 50 minutes, and then rinse with water for 3 times after ultrasonic cleaning, and then Soak in saturated potassium fluorozirconate solution at 70°C for 3 hours, take out and dry, mix the treated particles with alumina powder at a mixing ratio of 7:1, ball mill and mix thoroughly, and then put them into a silicon carbide tube furnace In the process, under the ...

Embodiment 2

[0018] A high-temperature resistant metal-ceramic composite casting mold, in which 1.8% by mass of ceramic components and 0.8% by mass of binder are added to the mold steel material. When it is mixed with the mold steel, it is mixed with dimethyl disulfide. Diphenylthiuram is used as a catalyst, the ceramic components and binder are heated at 1200°C for 4 hours and then put into the molten metal for grouting and gluing;

[0019] The preparation method of the ceramic component is: immersing silicon carbide particles in a saturated sodium hydroxide solution at 100°C for 35 minutes, then ultrasonic cleaning with an acetone solution for 55 minutes, ultrasonic cleaning, and then flushing with water 4 times, then Soak in saturated potassium fluorozirconate solution at 70°C for 3.5 hours, take out and dry, mix the treated particles with alumina powder at a mixing ratio of 7.5:1.5, ball mill and mix thoroughly, and then put into silicon carbide tube furnace In the process, under the prot...

Embodiment 3

[0023] A high-temperature resistant metal-ceramic composite casting mold, in which 2.0% of the ceramic component and 1.0% of the mass fraction of the binder are added to the mold steel material. When mixed with the mold steel, use dimethyl disulfide Diphenylthiuram is used as a catalyst, the ceramic components and binder are heated at 1300°C for 5 hours and then put into the molten metal for grouting and gluing;

[0024] The preparation method of the ceramic composition is: immersing silicon carbide particles in a saturated sodium hydroxide solution at 100°C for 40 minutes, then ultrasonic cleaning with an acetone solution for 60 minutes, ultrasonic cleaning, and then washing with clean water 5 times, and then Soak in saturated potassium fluorozirconate solution at 70°C for 4 hours, take it out and dry, mix the treated particles with alumina powder at a mixing ratio of 8:2, ball mill and mix thoroughly, and put them into a silicon carbide tube furnace In the process, under the pr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of machining of casting molds, and discloses a metal-ceramic compound casting mold capable of resisting high temperature. 1.5-2.0 mass% of ceramic components and 0.5-1.0 mass% of bonding agents are added in mold steel materials; during mixing with mold steel, dimethyldiphenylthiuram disulfide is used as a catalyst, and a silicon carbide-aluminum oxide composite ceramic material is used as a high-temperature resisting material; the performances of structural ceramic are far beyond that of metal, and excellent mechanical, thermal and chemical stability is achieved; high-temperature resisting metal ceramic components are added in metal alloys for grouting and cementing under the effect of the catalyst; and castings prepared by casting are higher insurface smoothness and size precision.

Description

Technical field [0001] The invention belongs to the technical field of casting mold processing, and specifically relates to a high temperature resistant metal ceramic composite casting mold. Background technique [0002] The development of China's foundry mold industry to this day has gone through an arduous course, and it was still in a backward state until 1976. Since 1977, due to the vigorous development of my country's machinery, electronics, light industry, instrumentation, transportation and other industrial sectors, the demand for casting molds has increased in quantity, the quality requirements have become higher and higher, and the delivery period has become shorter and shorter. . [0003] Compared with forging molds, casting molds are also outstanding in performance. Casting molds have no obvious directionality, and there is no anisotropy problem of forging molds. The deformation after heat treatment is small and easy to control. There is a layer of fine-grained area on t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/06C22C33/04C22C38/46C22C38/02C22C38/04
CPCB22C9/061C22C32/0036C22C33/006C22C33/04C22C38/002C22C38/008C22C38/02C22C38/04C22C38/46
Inventor 张莉
Owner 蚌埠市宏大制药机械有限公司