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Production technology for casting brake disk air channel with pre-coated sand core method

A production process and technology of coated sand, which is used in manufacturing tools, casting molding equipment, casting molds, etc., can solve the problem of the shape, size, and quality of the brake disc air duct, which is difficult to guarantee, pollutes the atmosphere and the environment, and has low strength of greased sand. problem, to achieve the effect of good binder effect, environmental protection and high refractoriness

Inactive Publication Date: 2011-06-29
TIANJIN SHENGXINGXIANG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are three problems: (1) Grease sand has low strength, the sand core is rough and easily deformed, and its size is unstable, and the shape, size and quality of the brake disc air duct are difficult to guarantee
(2) The sand core must be baked in a coal kiln, and the pollution caused by coal combustion is self-evident
During the subsequent baking process of the sand core, synthetic fat oil and kerosene volatilize and burn into black smoke, which pollutes the atmosphere and the environment more
[0005] The best substitute for synthetic sand cores is tung oil sand cores, but tung oil is extremely scarce

Method used

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  • Production technology for casting brake disk air channel with pre-coated sand core method
  • Production technology for casting brake disk air channel with pre-coated sand core method
  • Production technology for casting brake disk air channel with pre-coated sand core method

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Effect test

Embodiment 1

[0016] Embodiment 1: A production process for casting brake disc air ducts by using the film-coated sand core method, which is carried out according to the following steps: (1) Outsourcing the film. The original sand particle size of the coated sand is between 50-100 mesh, the hot bending strength is 2.5MPa, the gas generation is 14ml / g, the melting point is 103°C, and the collapsibility is good. (2) Install the electric heating core box on the core shooting machine, close the mold and take the coated sand into the electric heating core box quantitatively. The sand shooting time of the core shooting machine is 5 seconds, the electric heating and curing temperature is 250 ° C, and the heating and curing time is 50 Seconds, the coated sand is solidified in the electric heating core box to form a coated sand core, and the sand core is yellowish brown. (3) Take out the coated sand core from the electric heating core box, trim and inspect it before use; (4) Put the coated sand core...

Embodiment 2

[0018] Embodiment 2: A production process for casting brake disc air ducts by using the film-coated sand core method, which is carried out according to the following steps: (1) Outsourcing the film. The original sand particle size of the coated sand is between 50-100 mesh, the hot bending strength is 2.5MPa, the gas generation is 14ml / g, the melting point is 103°C, and the collapsibility is good. (2) Install the electric heating core box on the core shooter, close the mold and take the coated sand into the electric heating core box quantitatively. The sand shooting time of the core shooting machine is 8 seconds, the electric heating curing temperature is 280°C, and the heating curing time is 90 Seconds, the coated sand is solidified in the electric heating core box to form a coated sand core, and the sand core is yellowish brown. (3) Take out the coated sand core from the electric heating core box, trim and inspect it before use; (4) Put the coated sand core into the sand mold...

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Abstract

The invention relates to a production technology for casting brake disk air channel with a pre-coated sand core method, which comprises the following steps: (1) buying a coating film; (2) mounting an electric heating core box on a core injection machine and closing the mould, and quantitatively putting the pre-coated sand in the electric heating core box, wherein the sand injection time of the core injection machine is 5-8 seconds, the electric heating curing temperature is 250-280 DEG C, and the heating curing time is 50-90 seconds; and curing the pre-coated sand in the electric heating core box to form the pre-coated sand core; (3) taking out the pre-coated sand core from the electric heating core box, trimming and checking for use; (4) pouring the pre-coated sand core in a sand mould, wherein the temperature of the molten iron is 1,430 DEG C, and the speed is 3 seconds; and forming a brake disk. The technical process is simple to operate, energy-saving and environmentally-friendly; and the produced product has reliable quality and high yield.

Description

Technical field: [0001] The invention belongs to a casting process of a workpiece, in particular to a production process of casting a brake disk air duct by a film-coated sand core method. Background technique: [0002] Automobile brake disc is an important part of the safe driving of the car, and its air duct is an important structure that determines the performance and life of the brake disc. [0003] The air duct of the brake disc is sandwiched between the two discs for heat dissipation. The air duct is composed of heat dissipation ribs and air duct holes, each of which has 30 to 60 pieces (depending on the diameter of the brake disc), arranged alternately, adjacent to each other, radiating from the center to the outer circle, in the shape of spokes; the shape of the air duct holes Complicated, leaf-shaped, rotating leaf-shaped, etc.; the cross section of the air duct hole is only 5-14mm, the width of the heat dissipation rib is only 3-10mm, and the length is 40-70mm. Th...

Claims

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Application Information

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IPC IPC(8): B22C9/22
Inventor 张俊祥
Owner TIANJIN SHENGXINGXIANG MACHINERY MFG
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