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Repairing wax for investment casting and preparation method of repairing wax

A technology of investment casting and wax paste, which is used in casting molding equipment, oil/grease/wax adhesives, adhesive types, etc. , the quality is difficult to stabilize, etc., to achieve the effect of good flexibility and adhesion, good flexibility and adhesion, and moderate surface hardness

Active Publication Date: 2019-09-06
苏州泰尔航空材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composition of the repairing wax in this invention is relatively complicated, and the user deploys the repairing wax by himself, so there are many influencing factors, the quality is difficult to be stable, and the deployment and testing need to consume a lot of manpower, material resources and financial resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Add 7.7kg of wax paste into a stainless steel container. After melting, control the temperature of the wax liquid at 120°C-130°C. Add 0.8kg of EVA. 1.5kg of C5 petroleum resin, continue to stir until completely melted, then discharge the material and cool to form, and then obtain the repair wax for investment casting.

[0037] The physical indicators of the repair wax for investment casting in this example are: drop melting point: 76.5°C; penetration (25°C, 100g): 551 / 10mm; kinematic viscosity (100°C): 14.38mm 2 / s.

Embodiment 2

[0039] Add 7kg of wax paste into a stainless steel container. After melting, control the temperature of the wax liquid: 120°C-130°C. Add 0.5kg of APP. After the APP softens, stir continuously with a stainless steel rod until it melts into a uniform and transparent liquid, then add 2.5kg of C9 petroleum resin, continue to stir until completely melted, then discharge and cool to form, and then obtain the repair wax for investment casting.

[0040] The physical indicators of the repair wax for investment casting in this example are: drop melting point: 74°C; penetration (25°C, 100g): 511 / 10mm; kinematic viscosity (100°C): 16.85mm 2 / s.

Embodiment 3

[0042] Add 8.7kg of wax paste into a stainless steel container. After melting, control the temperature of the wax liquid: 120°C-130°C. Add 0.3kg of ethylene-acrylic acid copolymer EAA. After the EAA is softened, stir continuously with a stainless steel rod until it melts into a uniform transparent liquid, then add 1 kg of hydrogenated rosin, continue to stir until it is completely melted, then discharge the material and cool to shape, and then obtain the repair wax for investment casting.

[0043] The physical indicators of the repair wax for investment casting in this example are: dropping melting point: 81.5°C; penetration (25°C, 100g): 58 1 / 10mm; kinematic viscosity (100°C): 13.58mm 2 / s.

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Abstract

The invention provides a repairing wax for investment casting. The repairing wax for investment casting is prepared from, by weight, 65%-87% of cerate, 5%-28% of resin and 3%-10% of a high molecular material. According to the repairing wax, the cerate is used as a main material, the resin and the high molecular material are added for improving initial adhesion and persistent adhesion, and the prepared repairing wax is proper in surface hardness and good in flexibility, adhesion performance and workability; heating for melting is not needed, surface defects such as air holes, sunken parts or cracks of the surface of a wax pattern for investment casting are directly smeared with the repairing wax, and the repairing wax can adhere to the surfaces of various wax patterns for investment castingof different manufacturers and brands,; the surfaces of the repaired parts are high in smooth degree and have resistance to scratching, and the repairing wax has high applicability.

Description

technical field [0001] The invention relates to the technical field of industrial waxes, in particular to a repair wax for investment casting and a preparation method thereof. Background technique [0002] Investment casting is also called lost wax casting. The history of investment casting can be traced back to 4000 years ago. It first originated in Egypt, China and India. It was found in the unearthed cultural relics of our country before 2500 BC that our ancestors could Various copper utensils, bell tripods and artworks are produced by investment casting. The modern investment casting process began to take shape in the early 20th century, initially for dental and jewelry industries. During the Second World War, due to the needs of national defense and the development of the aviation industry, Britain, the United States and other countries first adopted the investment casting method to produce jet turbine engine blades with complex shapes, precise dimensions, high surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J191/00C09J11/08B22C7/02
CPCB22C7/02C09J11/08C09J191/00C08L23/0853C08L57/02
Inventor 宋珊珊李毅王增军
Owner 苏州泰尔航空材料有限公司
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