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Automobile turbocharger shell and preparation method thereof

A turbocharger and casing technology, which is applied in mechanical equipment, machines/engines, engine components, etc., can solve the problem of very high internal quality and internal porosity requirements of products, unable to meet the porosity requirements of auto parts, low density, etc. problems, to achieve the effect of good market prospects, accurate design, and lightweight materials

Inactive Publication Date: 2016-12-21
苏州梅克卡斯汽车科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the advantages of low density, flexible strength design, castability, machinability, and wear resistance of aluminum alloy, it is suitable for casting auto parts. High-speed die-casting technology is usually used for the production of auto parts. Parts, pores are easy to exist in the structure, and the requirements for the internal quality and internal porosity of the product are very high. The ordinary high-speed die-casting process cannot meet the porosity requirements of auto parts products.

Method used

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  • Automobile turbocharger shell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An automobile turbocharger housing, composed of the following components by weight: 9% silicon, 1.3% iron, 4.0% copper, 0.55% magnesium, 1.1% zinc, 0.10% chromium, 0.35% nickel, 0.25% tin , 0.25% titanium, 0.35% lead, 0.55% manganese, and the balance is aluminum.

[0029] The smelting furnace is heated to above 600°C, and silicon, iron, copper, magnesium, zinc, chromium, nickel, tin, titanium, lead, manganese and aluminum are added into the furnace according to the above-mentioned weight ratio. Continue to heat the above mixed material, and when the temperature of the mixed material rises to 720°C±10°C, add a two-in-one refining agent with an amount of 0.1%-0.8% of the mixed material for refining, and use a bell jar to press the refining agent into the mixed material Perform circular stirring in the liquid for 5-15 minutes, use 99.99% argon for degassing operation for 3-15 minutes, and stand still for 10-15 minutes to prepare for die-casting; Preheat the mold to 160-25...

Embodiment 2

[0034]In this embodiment, the automobile turbocharger housing is composed of the following components in weight percentage: 8.5% silicon, 0.5% iron, 2.5% copper, 0.10% magnesium, 1.0% zinc, 0.05% chromium, and 0.05% nickel , 0.10% tin, 0.15% titanium, 0.15% lead, 0.2% manganese, and the balance is aluminum.

[0035] The above-mentioned automobile turbocharger housing is obtained by the same method as in Example 1.

[0036] Compared with the existing thin-walled turbocharger shell products, the turbocharger shell product prepared in this embodiment has a uniform structure and low porosity, meets the technical requirements of pores <0.2mm, and has high endurance and quality. lighter.

Embodiment 3

[0038] In this embodiment, the automobile turbocharger housing is composed of the following components in weight percentage: 10.5% silicon, 1.3% iron, 4.0% copper, 0.55% magnesium, 1.2% zinc, 0.15% chromium, and 0.55% nickel , 0.25% tin, 0.25% titanium, 0.35% lead, 0.55% manganese, and the balance is aluminum.

[0039] The above-mentioned automobile turbocharger housing is obtained by the same method as in Example 1.

[0040] Compared with the existing thin-walled turbocharger shell products, the turbocharger shell product prepared in this embodiment has a uniform structure and low porosity, meets the technical requirements of pores <0.2mm, and has high endurance and quality. lighter.

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Abstract

The invention relates to an automobile turbocharger shell and a preparation method thereof. The preparation method comprises the following steps: mixing the raw materials, i.e. silicon, iron, copper, magnesium, zinc, chrome, nickel, tin, titanium, lead, manganese and aluminum according to a weight ratio, performing smelting and pressure casting, taking out a product from a pressure casting machine, cooling the product, performing edge cutting, manual cleaning, X-ray flaw detection, carrying, blasting, five-axis precision machining, cleaning and deburring, ECM electrode deburring and ultrasonic cleaning, and performing drying, inspection, packaging and delivery to obtain the automobile turbocharger shell. According to the product produced by the preparation method of the automobile turbocharger shell, the shortcoming that the original thin-wall turbocharger shell has extremely large air holes is overcome; and by the optimization for the design of the domestic advanced die pressure casting technology with one die and one cavity, the technical requirement that each air hole of the turbocharger shell is less than 0.2 mm can be met.

Description

technical field [0001] The invention relates to the field of die casting, and more specifically, to an automobile turbocharger housing and a preparation method thereof. Background technique [0002] Due to the advantages of low density, flexible strength design, castability, machinability, and wear resistance of aluminum alloy, it is suitable for casting auto parts. High-speed die-casting technology is usually used for the production of auto parts. Parts, pores are easy to exist in the structure, and the requirements for the internal quality and internal porosity of the product are very high. The ordinary high-speed die-casting process cannot meet the porosity requirements of auto parts products. [0003] According to the characteristics of aluminum alloy, the development of low porosity, high endurance and light weight meets the needs of lightweight automobiles and provides high-quality parts for the development of domestic lightweight automobiles. Therefore, the product h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/06B22D17/22B22D17/00F01D25/24
CPCC22C21/02B22D17/00B22D17/22C22C1/06F01D25/24
Inventor 张晓
Owner 苏州梅克卡斯汽车科技有限公司
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