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High-strength automobile part outer shell and forming method thereof

A technology for auto parts and molding methods, applied in the field of die-casting, can solve the problems of early fracture, low plastic toughness, poor thermal conductivity and thermal fatigue resistance, and achieve the effect of good strength

Inactive Publication Date: 2020-01-03
KINGPIN PRECISION IND SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main domestic die-casting mold materials are 4Cr5MoSiV1, 3Cr2W8V, etc., which have poor thermal strength above 600 °C and are not suitable for die-casting high-melting point alloys, while steel has poor thermal conductivity and thermal fatigue resistance, low plasticity and toughness, and is prone to early fractures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] A high-strength auto parts outer casing, the components of which are as follows:

[0029] Magnesium 12% ~ 13%;

[0030] Copper 1%~1.3%;

[0031] Tungsten 0.06%~0.18%;

[0032] Chromium 0.08%~0.18%;

[0033] Tin 0.07%~0.56%;

[0034] Zinc 1.2%~3.8%;

[0035] and aluminum comprising the remaining components.

[0036] A method for forming an outer casing of an automobile part, comprising the following steps:

[0037] 1) Fill the raw material into the tilting melting and holding furnace and heat it to 600-650°C. When heating, pass inert gas and stir and shake the gas in the molten metal liquid;

[0038] 2) Fill the molten metal liquid into the mold and close the mold until the gap between the parting surface of the mold is 20-25mm;

[0039] 3) Inject the mixed gas of oxygen and inert gas, the inert gas content accounts for 35%, and continue to close the mold until the mold is completely closed;

[0040] 4) Inject liquid raw materials into the barrel, then inject oxy...

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Abstract

The invention discloses a high-strength automobile part outer shell. The high-strength automobile part outer shell is prepared from the following components in percentage by weight: 12-13% of magnesium, 1-1.3% of copper, 0.06-0.18% of tungsten, 0.08-0.18% of chromium, 0.07-0.56% of tin, 1.2-3.8% of zinc, and the balance of aluminum.

Description

technical field [0001] The invention relates to the technical field of die-casting molding, in particular, it shows a high-strength auto parts shell and a molding method. Background technique [0002] Die-casting, referred to as die-casting, is a precision forming technology for metal parts close to the final shape and size, and the final product is die-casting. Its essence is that under the action of high pressure, the liquid metal is filled into the mold cavity at high speed, and is formed and solidified under the action of pressure, so as to obtain die-casting parts with clear outline and smooth surface. In the non-ferrous metal casting industry, die casting is an important casting method. In recent years, light alloys dominated by magnesium and aluminum have occupied an important position in the die-casting industry. Aluminum alloy castings obtained through die-casting account for about 60% of the total lead alloy castings. [0003] At present, most of the failure form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C1/02B22D17/00C22F1/047
CPCB22D17/00C22C1/026C22C21/06C22F1/047
Inventor 田跃文朱立群陆洋峰张峰张显东夏恩帅纪伟
Owner KINGPIN PRECISION IND SUZHOU CO LTD