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A turbocharger compressor volute

A technology for turbochargers and compressors, which is applied in the field of turbochargers and turbocharger compressor volutes. It can solve the problems of cumbersome post-processing and achieve high mechanical properties, reasonable material compatibility, and enhanced mechanical properties. Effect

Active Publication Date: 2016-04-13
宁波科达精工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The post-processing of this method is cumbersome, and it needs to be carried out under the conditions of 1-3.8Mpa inflation pressure and high pouring temperature to obtain a turbocharger compressor casing with good mechanical properties

Method used

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  • A turbocharger compressor volute

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Ingredients: The composition and mass percentage of the turbocharger compressor volute are: Si: 7.0%, Mg: 0.45%, Ti: 0.13%, La: 0.5%, Mn: 0.31%, Cu: 0.18%, Zn: 0.25%, Fe: 0.14%, Sn: 0.007%, Pb: 0.015%, the total content of other impurity elements is ≤ 0.3%, the balance is aluminum, and the ingredients are prepared according to the mass percentages of the above-mentioned elements.

[0038] Smelting: first add half of the aluminum ingot, add silicon, copper and the rest of the aluminum ingot after the aluminum ingot is completely melted, add the additive after the silicon and copper are completely melted, and adjust the temperature of the molten aluminum to 700 °C and press magnesium into the alloy after the alloy is completely melted. The molten aluminum after smelting is stirred evenly.

[0039] Deterioration, slag removal, and degassing refining: Sr is added to the molten aluminum for metamorphism treatment, and after slag removal, nitrogen is introduced to rotate and ...

Embodiment 2

[0044] Ingredients: The composition and mass percentage of the turbocharger compressor volute are: Si: 7.5%, Mg: 0.25%, Ti: 0.12%, La: 0.7%, Mn: 0.30%, Cu: 0.18%, Zn: 0.25%, Fe: 0.15%, Sn: 0.008%, Pb: 0.013%, the total content of other impurity elements is ≤ 0.3%, the balance is aluminum, and the ingredients are prepared according to the mass percentages of the above-mentioned elements.

[0045] Smelting: first add half of the aluminum ingot, add silicon, copper and the rest of the aluminum ingot after the aluminum ingot is completely melted, add the additive after the silicon and copper are completely melted, and adjust the temperature of the molten aluminum to 690 ℃ after the alloy is completely melted. The molten aluminum after smelting is stirred evenly.

[0046] Deterioration, slag removal, and degassing refining: Sr is added to the molten aluminum for metamorphism treatment, and after slag removal, nitrogen is introduced to rotate and degassing, and refining is carried o...

Embodiment 3

[0051] Ingredients: The composition and mass percentage of the turbocharger compressor volute are: Si: 6.5%, Mg: 0.3%, Ti: 0.14%, La: 0.4%, Mn: 0.30%, Cu: 0.18%, Zn: 0.2%, Fe: 0.13%, Sn: 0.009%, Pb: 0.016%, the total content of other impurity elements is ≤ 0.3%, the balance is aluminum, and the ingredients are prepared according to the mass percentages of the above-mentioned elements.

[0052] Smelting: first add half of the aluminum ingot, add silicon, copper and the remaining aluminum ingot after the aluminum ingot is completely melted, add additives after the silicon and copper are completely melted, and adjust the temperature of the molten aluminum to 720 °C and press magnesium into the alloy after the alloy is completely melted. The molten aluminum after smelting is stirred evenly.

[0053] Deterioration, slag removal, and degassing refining: Sr is added to the molten aluminum for metamorphism treatment, and after slag removal, nitrogen is introduced to rotate and degassi...

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Abstract

The invention relates to a compressor volute of a turbocharger, and belongs to the field of alloy material technology. The compressor volute of the turbocharger mainly comprises the following components, by mass: 6.5% to 7.5% of Si, 0.25% to 0.45% of Mg, 0.12% to 0.15% of Ti, 0.4% to 0.7% of La, not more than 0.35% of Mn, not more than 0.2% of Cu, not more than 0.3% of Zn, not more than 0.2% of Fe, not more than 0.01% of Sn, not more than 0.03% of Pb, not more than 0.1% of the total content of impurity elements, and the balance being aluminum. A preparation method comprises the steps of batching, smelting, modification, deslagging, degassing refinement, metal mold gravity casting and heat treatment. The compressor volute of the turbocharger has reasonable compatibility, so the compressor volute of the turbocharger has high mechanical properties and good cutting performance, and meets safety and reliability of host matching requirements.

Description

technical field [0001] The invention relates to a turbocharger, in particular to a turbocharger compressor volute, and belongs to the technical field of alloy materials. Background technique [0002] At present, automobile engines mostly use turbocharger technology to improve engine performance and reduce exhaust emissions. Existing domestic turbochargers have gradually developed from large models to small models, from diesel engines to gasoline engines, but the design and manufacture of turbocharger compressor volutes as an important part of the turbo has not been improved, resulting in turbochargers. Can not play the biggest role, can not meet the requirements of its structure, mechanical properties gradually improved. For example, Chinese patent application documents (publication number: CN102764873A) disclose a low-pressure casting process for a turbocharger gas casing, wherein the aluminum alloy raw material is ZAlSi7Mg (ZL101) cast aluminum alloy, and the weight perce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02
Inventor 沈宏林李丹平高明灯黄诚
Owner 宁波科达精工科技股份有限公司