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Casting technology of improved vehicle box body

A casting process and improved technology, applied in the field of aluminum alloy casting, can solve the problems of poor air tightness, air holes, unclear contours, etc., and achieve the effect of reducing the scrap rate, accurate positioning, and not easy to link and dislocate.

Active Publication Date: 2018-12-25
四川省犍为恒益铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor airtightness of the castings for vehicle exhaust gas treatment produced by the existing low-pressure casting process, the purpose of the present invention is to provide an improved casting process for the vehicle box, which can effectively ensure the airtightness requirements of the box castings , to avoid defects such as casting pores, undercasting or unclear contours

Method used

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  • Casting technology of improved vehicle box body
  • Casting technology of improved vehicle box body
  • Casting technology of improved vehicle box body

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Please refer to Figure 1 to Figure 5 As shown, this embodiment provides a casting process for an improved vehicle box, including the following process steps:

[0046] (a) Making sand core components, using resin sand according to the shape of the vehicle exhaust gas treatment box to produce a block sand core component, the block sand core component includes a main sand core 9, a channel sand core 10, and a small channel sand Core 11, strap sand core 13 and cross sand core 12; make the main sand core 9 and channel sand core 10 assembly mold, small channel sand core 11 and strap sand core 13 assembly mold, and cross sand core 12 mold, and then cover The film sand is injected into the core mold, the temperature of the core mold is 270℃, the injection pressure is 0.7Mpa, and the shooting time is 10s; then the main sand core 9 is hollowed out, and the side wall of the main sand core 9 is hollowed out The solidification depth of the sand core is 18mm; the surface of the block-...

Embodiment 2

[0063] Please refer to Figure 1 to Figure 5 As shown, this embodiment provides a casting process for an improved vehicle box, including the following process steps:

[0064] (a) Making sand core components, using resin sand according to the shape of the vehicle exhaust gas treatment box to produce a block sand core component, the block sand core component includes a main sand core 9, a channel sand core 10, and a small channel sand Core 11, strap sand core 13 and cross sand core 12; make the main sand core 9 and channel sand core 10 assembly mold, small channel sand core 11 and strap sand core 13 assembly mold, and cross sand core 12 mold, and then cover The film sand is injected into the core mold, the temperature of the core mold is 280℃, the injection pressure is 0.6Mpa, and the injection time is 8s; then the main sand core 9 is hollowed out, and the side wall of the main sand core 9 is hollowed out The solidification depth of the sand core is 15mm; the surface of the block ...

Embodiment 3

[0081] Please refer to Figure 1 to Figure 5 As shown, this embodiment provides a casting process for an improved vehicle box, including the following process steps:

[0082] (a) Making sand core components, using resin sand according to the shape of the vehicle exhaust gas treatment box to produce a block sand core component, the block sand core component includes a main sand core 9, a channel sand core 10, and a small channel sand Core 11, strap sand core 13 and cross sand core 12; make the main sand core 9 and channel sand core 10 assembly mold, small channel sand core 11 and strap sand core 13 assembly mold, and cross sand core 12 mold, and then cover The film sand is injected into the core mold, the temperature of the core mold is 250℃, the injection pressure is 0.5Mpa, and the injection time is 8s; then the main sand core 9 is hollowed out, and the side wall of the main sand core 9 is hollowed out The solidification depth of the sand core is 20mm; the surface of the block ...

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Abstract

The invention discloses a casting technology of an improved vehicle box body, and relates to the technical field of aluminum alloy casting. The improved vehicle box body is to solve the problem that avehicle box body casting piece by adopting an existing low-pressure casting technology is poor in air tightness. The technology comprises the following steps of sand core assembly preparation, main sand core emptying-designing and mold shell body manufacturing, upper mold coating technology-mold assembling-alloy component matching and alloy fusion and refining, deoxygenation and drossing process-alloy solution transferred in a heat preserving furnace of a low-pressure casting machine for easy purifying treatment-casting process of alloy, namely, liquid ascending, mold filling, pressure maintaining and crystallization, decompression cooling-mold opening for taking the box body casting piece and the like. By means of the technology, the air tightness of the box body casting piece is effectively improved, the defects of shrinkage porosity of a casting piece box body, needle holes, air holes, slag inclusion and the like are avoided, the extension strength of a casting product is improvedby 30-42%, and the casting quality is significantly improved.

Description

Technical field [0001] The present invention relates to the technical field of aluminum alloy casting, and more specifically to an improved casting process for a vehicle box. Background technique [0002] As countries around the world have stricter and stricter emission control for automobile exhaust, the current commercial vehicle exhaust treatment box casting upgrade is an inevitable product. Due to the high efficiency and power requirements of automotive engines in the market, the company focuses on improving the fluidity of the metal liquid in the casting cavity when developing the exhaust gas treatment box for casting vehicles, and continues to improve the filling materials, metal molds and sand cores. Improved and customized special equipment for vehicle exhaust gas treatment box casting. [0003] The vehicle exhaust gas treatment box has a complex structure and uneven thickness; the thinnest part of the product is only 5mm, while the thickest part of the product reaches 30m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/04B22D18/08C22C21/04C22C1/02
CPCB22D18/04B22D18/08C22C1/026C22C21/04
Inventor 唐祖清黄志伟宋权岑际强黄剑彬
Owner 四川省犍为恒益铝业有限公司
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