Technological method for thermal shaping clean production of light alloy die casting and product

A light alloy, clean production technology, applied in metal processing equipment, forming tools, manufacturing tools, etc., can solve the problems of complex processing technology, unfavorable energy saving and consumption reduction slogans, environmental pollution, etc., and achieve the effect of broad application prospects.

Pending Publication Date: 2021-02-05
FUJIA ELECTRONICS KUSN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, light alloy die castings such as aluminum alloys are usually surface treated by chromic acid passivation and phosphating. pollution, which is not conducive to responding to the slogan of energy saving and consumption reduction, and cannot realize clean production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A process method for heat-shaping clean production of light alloy die-castings, comprising the following steps:

[0043] Step 1, providing cast-molded light alloy die-casting parts with required shape and size, performing surface treatment on the light-weight alloy die-casting parts, and then polishing, cleaning and drying;

[0044] Step 2, heating at 180°C for 8 hours to remove the stress in the internal structure of the light alloy die casting;

[0045] Step 3, alternately performing heat shaping and cold shaping on the light alloy die-casting obtained in step 2, and controlling the flatness of the light alloy die-casting within 0.02mm;

[0046] Step 4, removing the non-appearance-required structure on the surface of the light alloy die-casting obtained in Step 3, including waste residue, waste material, burr, and oxide layer;

[0047] Step 5: Spraying a 90 μm thick anti-corrosion and temperature-resistant protective layer on the surface of the light alloy die-castin...

Embodiment 2

[0057] A process method for heat-shaping clean production of light alloy die-castings, comprising the following steps:

[0058] Step 1, providing cast-molded light alloy die-casting parts with required shape and size, performing surface treatment on the light-weight alloy die-casting parts, and then polishing, cleaning and drying;

[0059] Step 2, heating at 200°C for 5 hours to remove the stress in the internal structure of the light alloy die-casting;

[0060] Step 3, alternately performing heat shaping and cold shaping on the light alloy die-casting obtained in step 2, and controlling the flatness of the light alloy die-casting within 0.02mm;

[0061] Step 4, removing the non-appearance-required structure on the surface of the light alloy die-casting obtained in Step 3, including waste residue, waste material, burr, and oxide layer;

[0062] Step 5: Spraying a 100 μm thick anti-corrosion and temperature-resistant protective layer on the surface of the light alloy die-casti...

Embodiment 3

[0072] A process method for heat-shaping clean production of light alloy die-castings, comprising the following steps:

[0073] Step 1, providing cast-molded light alloy die-casting parts with required shape and size, performing surface treatment on the light-weight alloy die-casting parts, and then polishing, cleaning and drying;

[0074] Step 2, heating at 240°C for 4 hours to remove the stress in the internal structure of the light alloy die-casting;

[0075] Step 3, alternately performing heat shaping and cold shaping on the light alloy die-casting obtained in step 2, and controlling the flatness of the light alloy die-casting within 0.02mm;

[0076] Step 4, removing the non-appearance-required structure on the surface of the light alloy die-casting obtained in Step 3, including waste residue, waste material, burr, and oxide layer;

[0077] Step 5: spraying a 120 μm thick anti-corrosion and temperature-resistant protective layer on the surface of the light alloy die-casti...

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Abstract

The invention relates to a technological method for thermal shaping clean production of a light alloy die casting and a product. The technological method for thermal shaping clean production of the light alloy die casting comprises the following steps of: 1, providing a cast light alloy die casting, and carrying out surface treatment, polishing, cleaning and drying on the cast light alloy die casting; 2, heating the light alloy die casting, and removing internal stress of the light alloy die casting; 3, alternately carrying out hot treatment and cold treatment on the light alloy die casting; 4, removing structures with non-appearance requirements from the surface of the light alloy die casting; and 5, spraying an anti-corrosion temperature-resistant protective layer to the surface of the light alloy die casting, and drying the anti-corrosion temperature-resistant protective layer. According to the technological method for thermal shaping clean production of the light alloy die castingand the product, as the light alloy die casting is treated through a plasma or chemical surface treating agent method first, no toxic effect exists, environment friendliness is achieved, and clean production is achieved; and thermal shaping treatment and cold shaping treatment are conducted alternately, the flatness is controlled to be within 0.02 mm, the protective layer is sprayed after the structures with non-appearance requirements are removed from the surface, and therefore, chemical corrosion resistance, high temperature resistance and the like are achieved.

Description

technical field [0001] The invention belongs to the technical field of thermal shaping methods for die castings, and in particular relates to a process method and products for the clean production of thermal shaping of light alloy die castings. Background technique [0002] Lightweight alloys mainly include aluminum, magnesium, titanium alloys, etc., which are widely used in aviation, aerospace, automobiles, high-speed rail and other fields because of their light weight. Die-casting is a kind of pressure-casting part. It uses the pressure-casting machinery die-casting machine equipped with the casting mold to die-cast the liquid metal and cast the parts with the shape and size limited by the mold. The expected result of the general plastic deformation of the die-casting is plastic deformation. That is to say, after the product is leveled, it will be shaped. Aluminum alloy and other light alloy die-casting parts contain a lot of stress that needs to be released due to die-ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D3/00B21D37/16B22D31/00C22F1/00C23F3/00C23F4/00
CPCB21D3/00B21D37/16B22D31/002C22F1/00C23F3/00C23F4/00
Inventor 程传伟
Owner FUJIA ELECTRONICS KUSN
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