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Gravity casting process of back cover board of turbosupercharger

A turbocharger and gravity casting technology, which is applied in gas turbine devices, machines/engines, liquid fuel feeders, etc., can solve the problems of low service life, high cost, poor mechanical properties of the center of the rear cover, etc., and achieve the goal of using Long life, easy operation, and reduced processing costs

Inactive Publication Date: 2012-11-07
ENKEI ALUMINUM IND CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of casting product has high cost, poor mechanical properties of the central part of the rear cover, and low service life, which cannot meet the requirements of low cost, high mechanical properties and dynamic performance in the existing market

Method used

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  • Gravity casting process of back cover board of turbosupercharger

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Effect test

Embodiment

[0026] A kind of gravity casting technology of turbocharger rear cover plate is characterized in that: concrete steps are as follows:

[0027] Step One: Gravity Casting:

[0028] Cast aluminum alloy raw materials on a gravity casting machine at a pouring temperature of 700-740°C;

[0029] Step Two: Clean the Casting:

[0030] Take out the casting from the mold of the gravity casting machine, and then clean the flash, burr and gate of the casting;

[0031] Step 3: Quenching and aging treatment:

[0032] First solid solution aging: the temperature is heated to 535~545℃, and the holding time is 2~3H;

[0033] Re-quenching: water temperature 50-80°C, then artificial aging, heating temperature 195-205°C, holding time 2-3H, then air cooling;

[0034] Step 4: Shot peening finishing:

[0035] Finish the casting with shot blasting machine and stainless steel ball;

[0036] Step Five: Machining:

[0037] Machining the castings to produce the desired structure;

[0038] Step 6: D...

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Abstract

The invention discloses a gravity casting process of a back cover board of a turbosupercharger. The gravity casting process comprises the following steps: casting an aluminum alloy raw material on a gravity casting machine at a casting temperature of 700-740 DEG C, cleaning overlaps, burr and pouring gates of a cast, heating the cast to 535-545 DEG C and thermally insulating for 2-3 hours to carry out solid solution aging, placing in water at 50-80 DEG C to quench manually, heating to 195-205 DEG C, thermally insulating for 2-3 hours, air-cooling, and carrying out blasting, finishing, machining and oil removal cleaning. The back cover board of the turbosupercharger produced by the casting process has the advantages of good mechanical property, good cutting and processing performance and mechanical property, simple casting process, convenience for operation and low production cost.

Description

technical field [0001] The invention relates to a casting process for a turbocharger rear cover, in particular to a gravity casting process for a turbocharger rear cover. Background technique [0002] The rear cover of the turbocharger is an important booster sealing part on the turbocharger. The principle of exhaust gas turbocharging is to use the exhaust gas discharged from the engine to drive the impeller, thereby compressing the air through the compression shell to increase the intake pressure and increase the charge volume. . When the engine speed increases, the exhaust gas discharge speed and the turbine compressor speed also increase synchronously. At this time, the impeller compresses more air into the compressor casing, so that more air can be compressed into the engine cylinder. Make the engine fuel burn fully, increase the engine efficiency, and generate greater power. The increase of the intake pressure of the engine is mainly realized by the exhaust gas turboc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D23/00F02C6/12F02M37/00
Inventor 黄毅
Owner ENKEI ALUMINUM IND CHINA
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