Die casting method for automobile accessory

An auto parts and pressure technology, applied in the field of metal die-casting, can solve the problems of low mechanical properties, poor high temperature resistance, low strength of aluminum alloy parts, etc., and achieve the effect of improving service life, meeting drilling requirements, and good ductility.

Inactive Publication Date: 2018-02-09
南通冠达粉末冶金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the auto parts production industry, ordinary die-casting technology is usually used for the production of auto parts, but the die-casting parts produced by ordinary die-casting technology, especially aluminum alloy auto parts, are prone to have pores in the structure and cause bad phenomena. Alloy parts have defects such as low strength, low mechanical properties, poor corrosion resistance, and poor high temperature resistance; how to find a process to improve the mechanical properties of aluminum alloy auto parts and the problem of easy storage of pores in the structure has been entangled in die-casting industry practitioners

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The die-casting method of the auto parts of this embodiment adopts an aluminum alloy, and the parts by weight of the components of the aluminum alloy are as follows: 0.8 parts of silicon; 0.1 parts of iron; 0.9 parts of magnesium; 0.11 parts of copper; 0.2 parts of manganese; 0.01 parts of cadmium ; 0.2 parts of zinc; 0.1 parts of titanium; 0.06 parts of nickel; 96.96 parts of aluminum;

[0021] Include the following steps:

[0022] A. Modification treatment: melt the raw materials and raise the temperature to 800°C to 900°C for deterioration treatment, and let stand for 2 hours;

[0023] B. Smelting: Raise the temperature of the modified raw materials to 700°C-800°C to become liquid raw materials;

[0024] C. Mold clamping: Stop mold clamping until there is a gap of 20 mm on the parting surface of the mold;

[0025] D. Inject oxygen with a pressure of 0.4 Mpa into the gap;

[0026] E. Continue to close the mold, and the mold is completely closed;

[0027] F. Inject...

Embodiment 2

[0033] The die-casting method for auto parts in this embodiment adopts an aluminum alloy, and the parts by weight of the components of the aluminum alloy are as follows: 1.0 parts of silicon; 0.3 parts of iron; 1.1 parts of magnesium; 0.13 parts of copper; 0.3 parts of manganese; 0.05 parts of cadmium ; 0.28 parts of zinc; 0.2 parts of titanium; 0.08 parts of nickel; 97.63 parts of aluminum;

[0034] Include the following steps:

[0035] A. Modification treatment: melt the raw materials and raise the temperature to 800°C to 900°C for deterioration treatment, and let stand for 2 hours;

[0036] B. Smelting: Raise the temperature of the modified raw materials to 700°C-800°C to become liquid raw materials;

[0037] C. Mold clamping: Stop mold clamping until there is a gap of 30 mm on the parting surface of the mold;

[0038] D. Inject oxygen with a pressure of 0.6Mpa into the gap;

[0039] E. Continue to close the mold, and the mold is completely closed;

[0040] F. Inject li...

Embodiment 3

[0046] The die-casting method for auto parts in this embodiment adopts an aluminum alloy, and the parts by weight of the components of the aluminum alloy are as follows: 0.9 parts of silicon; 0.2 parts of iron; 1.0 parts of magnesium; 0.12 parts of copper; 0.25 parts of manganese; 0.03 parts of cadmium ; 0.24 parts of zinc; 0.15 parts of titanium; 0.07 parts of nickel; 97.34 parts of aluminum;

[0047] Include the following steps:

[0048] A. Modification treatment: melt the raw materials and raise the temperature to 800°C to 900°C for deterioration treatment, and let stand for 2 hours;

[0049] B. Smelting: Raise the temperature of the modified raw materials to 700°C-800°C to become liquid raw materials;

[0050] C. Mold clamping: Stop mold clamping until there is a gap of 30 mm on the parting surface of the mold;

[0051] D. Inject oxygen with a pressure of 0.6Mpa into the gap;

[0052] E. Continue to close the mold, and the mold is completely closed;

[0053] F. Inject ...

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PUM

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Abstract

The invention relates to a die casting method for an automobile accessory. The die casting method adopts an aluminum alloy and comprises the following steps of A, metamorphic treatment, specifically,raw materials are melted and heated up to 800-900 DEG C% for the metamorphism treatment, and still standing is conducted for 2-4 hours; B, smelting, specifically, the raw materials after metamorphic treatment is heated up to 700-800 DEG C and turned into a liquid material; C, die closing, specifically, until there is a 20-30 mm gap in the die molded surface, die closing is stopped; D oxygen injecting into the gap; E, die closing continuing to make the die completely close; F, liquid raw material injecting into a barrel, G, oxygen injecting into the barrel after injecting the liquid material into the barrel, H, die casting, I, cooling, and j, die opening, that is, die-casting of a product is completed. The die casting method has the advantages that the strength and hardness of the automobile accessory made by the aluminum alloy are suitable for production requirements of the automobile accessory, the ductility is good, and the punching demand can be met; and meanwhile, the automobile accessory is super durable and corrosion-resistant, thus the service life of the automobile accessory is improved.

Description

technical field [0001] The invention relates to the technical field of metal die-casting, in particular to a die-casting method for auto parts. Background technique [0002] In the auto parts production industry, ordinary die-casting technology is usually used for the production of auto parts, but the die-casting parts produced by ordinary die-casting technology, especially aluminum alloy auto parts, are prone to have pores in the structure and cause bad phenomena. Alloy parts have defects such as low strength, low mechanical properties, poor corrosion resistance, and poor high temperature resistance; how to find a process to improve the mechanical properties of aluminum alloy auto parts and the problem of easy storage of pores in the structure has been entangled in die-casting industry practitioners. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a die-casting method for auto parts to solve the above technical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/04C22C21/08B22D17/00
CPCC22C21/04B22D17/00C22C21/08
Inventor 纪桂林
Owner 南通冠达粉末冶金有限公司
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