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Vehicle impeller casting process

A casting process and impeller technology, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of easy cracks, affecting the service life of the impeller, fracture, etc., and achieve the effect of improving impact toughness and enhancing corrosion resistance

Inactive Publication Date: 2019-12-24
徐州市万铭精密铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the casting process of automobile impellers, due to the high content of carbon and carbides and large grains, the impact toughness of the impeller is greatly reduced, and cracks and fractures are prone to occur, which seriously affects the service life of the impeller.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An automobile impeller casting process, the steps are as follows:

[0024] S1: Make a forming mold, put it into an intermediate frequency vacuum induction melting furnace to heat and keep it warm;

[0025] S2: Put iron, chromium, titanium, manganese, silicon, and aluminum into the furnace, and continue to heat the furnace to completely melt the materials; the components of each material are 100 parts by weight of iron, 50 parts of chromium, and 0.1 part of titanium , manganese 40 parts, silicon 0.1 part, aluminum 0.1 part;

[0026] S3: Stir the melting liquid evenly;

[0027] S4: Take out the mold, and coat the wax layer;

[0028] S5: Cool the molten solution to 1300°C, add an inoculant, and then inject it into the mold; the inoculant is any one of the rare earth elements RE;

[0029] S6: The injection process is divided into three times, and the mold is knocked in all directions after each injection, and the amount of each injection is one-third of the whole;

[00...

Embodiment 2

[0035] An automobile impeller casting process, the steps are as follows:

[0036] S1: Make a forming mold, put it into an intermediate frequency vacuum induction melting furnace to heat and keep it warm;

[0037] S2: Put iron, chromium, titanium, manganese, silicon, and aluminum into the furnace, and continue to heat the furnace to completely melt the materials; the components of each material are 180 parts by weight of iron, 80 parts of chromium, and 0.5 parts of titanium , 80 parts of manganese, 0.4 parts of silicon, 0.8 parts of aluminum;

[0038] S3: Stir the melting liquid evenly;

[0039] S4: Take out the mold, and coat the wax layer;

[0040] S5: Cool the molten solution to 1400°C, add an inoculant, and then inject it into the mold; the inoculant is any one of the rare earth elements RE;

[0041] S6: The injection process is divided into three times, and the mold is knocked in all directions after each injection, and the amount of each injection is one-third of the w...

Embodiment 3

[0047] An automobile impeller casting process, the steps are as follows:

[0048] S1: Make a forming mold, put it into an intermediate frequency vacuum induction melting furnace to heat and keep it warm;

[0049] S2: Put iron, chromium, titanium, manganese, silicon, and aluminum into the furnace, and continue to heat the furnace to completely melt the materials; the components of each material are 140 parts by weight of iron, 60 parts of chromium, and 0.2 parts of titanium , 60 parts of manganese, 0.2 parts of silicon, 0.4 parts of aluminum;

[0050] S3: Stir the melting liquid evenly;

[0051] S4: Take out the mold, and coat the wax layer;

[0052] S5: Cool the molten solution to 1350°C, add an inoculant, and then inject it into the mold; the inoculant is any one of the rare earth elements RE;

[0053] S6: The injection process is divided into three times, and the mold is knocked in all directions after each injection, and the amount of each injection is one-third of the w...

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PUM

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Abstract

The invention discloses a vehicle impeller casting process, and belongs to the technical field of casting production. The vehicle impeller casting process comprises the following steps: (S1) a mold isput in a medium-frequency vacuum induction smelting furnace for heating insulation; (S2) iron, chromium, titanium, manganese, silicon and aluminum are put in a smelting furnace for total melting; (S3) melting liquid is uniformly stirred; (S4) the mold is taken out; and a wax layer is plated; (S5) after the melting liquid is cooled to 1300-1400 DEG C, nucleating agents are fed and injected into the mold; (S6) the injecting process is divided into three times; and the mold is comprehensively beaten after each injection; (S7) the mold is ultrasonically oscillated; (S8) the standing is performed;(S9) the mold is cooled to the room temperature until the melting liquid is totally solidified; and (S10) the mold is stripped. Manganese, silicon and aluminum are fed in the smelting process for deoxidation to improve the alloy corrosion resistance; and when the nucleating agents are fed to accelerate formation of crystal nucleuses, carbide grains are refined through ultrasonic oscillation, so that the impeller impact toughness is improved.

Description

technical field [0001] The invention relates to the technical field of casting production and processing, in particular to an automobile impeller casting process. Background technique [0002] In today's industrial operations, automotive impellers are typically formed by casting. In the casting process, sand casting has the widest adaptability, and small, large, simple and complex parts can be mass-produced. [0003] In the casting process of automobile impellers, due to the high content of carbon and carbides and large grains, the impact toughness of the impeller is greatly reduced, and cracks and fractures are prone to occur, which seriously affects the service life of the impeller. Contents of the invention [0004] In order to solve the above technical problems, the present invention provides an automobile impeller casting process. [0005] The present invention is realized through the following technical proposals: an automobile impeller casting process, the steps a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C22C38/28C22C38/02C22C38/06C22C33/04B22C9/28C21C7/06B22D1/00B22D27/20B22D27/08
CPCB22C9/28B22D1/00B22D27/08B22D27/20C21C7/06C22C33/04C22C38/02C22C38/06C22C38/28C22C38/38
Inventor 马学建薛安柱
Owner 徐州市万铭精密铸造有限公司