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Casting method of round part of automobile spare tire lifter

A lifter and circular technology, which is applied in the casting field of spare tire lifter circular parts, can solve the problems of low production efficiency, high labor intensity, waste of human resources, etc., and achieve high hardness, smooth surface and precise size. Effect

Inactive Publication Date: 2015-01-21
宁波吉威熔模铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the traditional casting process requires a lot of manpower during the preparation of the molding sand, the process of making the sand mold, and the cleaning of the castings in the later stage. The labor intensity is relatively high, and a lot of precious human resources are wasted. At the same time, each product is cast Need to repeat the above process, low production efficiency

Method used

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  • Casting method of round part of automobile spare tire lifter
  • Casting method of round part of automobile spare tire lifter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Follow the steps below to cast a sample of round parts of the automobile spare tire lifter:

[0023] 1) Immerse the pre-formed fusible model into a slurry composed of ceramic particles and a colloidal liquid binder, thereby forming a coating on the model and spray drying; the ceramic particles can be silicon carbide or silicon nitride Or tungsten carbide, the particle size is 20-50μm; the colloidal liquid binder is polyacrylamide; the weight ratio of the ceramic particles and the colloidal liquid binder in the slurry composed of ceramic particles and the colloidal liquid binder is 1 :0.1;

[0024] Among them, step 1) is repeated 3 times;

[0025] 2) Coat the coating of step 1) with a slurry composed of refractory particles and a colloidal liquid binder, and spray-dry; wherein, the refractory material is silica; the refractory material particles and glue The weight ratio of the condensed material is 100:5;

[0026] Among them, step 2) is repeated twice;

[0027] 3) Insulation a...

Embodiment 2

[0034] Follow the steps below to cast a sample of round parts of the automobile spare tire lifter:

[0035] 1) Immerse the preformed fusible model into a slurry composed of ceramic particles and a colloidal liquid binder, thereby forming a coating on the model, and spray drying; the ceramic particles are silicon nitride and tungsten carbide ( The weight ratio is 10:1) mixture, the particle size is 100-200μm; the colloidal liquid binder is polyacrylate; the ceramic particles and the colloidal liquid binder in the slurry composed of ceramic particles and colloidal liquid binder The weight ratio is 1:10;

[0036] Among them, step 1) is repeated 5 times;

[0037] 2) Coat the coating of step 1) with a slurry composed of refractory particles and a colloidal liquid binder, and spray dry; wherein, the refractory material is magnesium oxide; the refractory material particles and the gelling The weight ratio of the forming materials is 100:10;

[0038] Among them, step 2) is repeated 3 times;...

Embodiment 3

[0044] Follow the steps below to cast a sample of round parts of the automobile spare tire lifter:

[0045] 1) Immerse the preformed fusible model into a slurry composed of ceramic particles and a colloidal liquid binder, thereby forming a coating on the model and spray drying; the ceramic particles are tungsten carbide, and the size of the particles is 50-100μm; the colloidal liquid binder is a mixture of polyacrylamide and polyacrylate; the weight ratio of ceramic particles and colloidal liquid binder in the slurry composed of ceramic particles and colloidal liquid binder is 1:0.5 ;

[0046] Among them, step 1) is repeated 3 times;

[0047] 2) Coat the coating of step 1) with a slurry composed of refractory particles and a colloidal liquid binder, and spray-dry; wherein, the refractory material is alumina; the refractory material particles and the gelling The weight ratio of the forming materials is 100:1;

[0048] Among them, step 2) is repeated twice;

[0049] 3) Insulate at 300°...

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Abstract

The invention relates to a casting method of a round part of an automobile spare tire lifter. Ceramic wear-resisting grains are used for replacing a fireproof material and the surface of a module is coated with a liquid coating prepared from the ceramic wear-resisting grains and a binding agent to prepare a mold; an evanescent mode is melted and alloy liquid is injected; the injected alloy liquid is cooled and condensed to form a casting; the ceramic wear-resisting grains are led to the surface of the casting and then the casting is subjected to heat treatment so that one ceramic hardening layer is additionally arranged on the surface of the casting; and furthermore, the surface rigidity of the casting is improved. By adopting the casting method provided by the invention, the casting is formed in one step and has smooth surface and accurate size; the aim of less cutting or no cutting can be realized; and the surface is provided with the ceramic hardening layer and the rigidity is greatly improved, so that the method provided by the invention is suitable for preparing alloy castings needing high surface rigidity, such as the round part of the automobile spare tire lifter.

Description

[0001] This application is a divisional application based on a Chinese application (2012104057300) Technical field [0002] The invention relates to a casting method, in particular, to a casting method of a circular fitting of an automobile spare tire lifter. Background technique [0003] Casting is one of the main methods for producing parts blanks. It is a very quick preparation method. Especially for parts of some brittle metals or alloy materials, casting technology is a common processing method. Its forming principle is: heating and melting the metal to make it It has fluidity and is then poured into a mold cavity with a certain shape, fills the cavity under the action of gravity or external force, cools and solidifies into a casting or part. [0004] The traditional casting process generally includes the following steps: a. Making a pattern for core making according to the shape of the product; b. Putting the pattern into a sand box, filling, compacting, and closing the box af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00B22C9/04
CPCB22C3/00B22C9/04
Inventor 罗绍康
Owner 宁波吉威熔模铸造有限公司
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