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Method for casting automobile axle housing by V method

A technology for automobiles and axle housings is applied in the field of V-method casting of automobile axle housings to achieve the effects of low production cost, favorable flow and filling, and good yield.

Inactive Publication Date: 2014-04-16
LIUZHOU JINTE NEW WEAR RESISTANT MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because it does not use binder, it is easy to shake out sand, reduces waste sand, has low consumption of molding materials, and improves the surface quality and dimensional accuracy of castings. Therefore, V-method casting has developed rapidly in China in recent years and is mature every day. Casting is mostly used for general-purpose large castings with simple structures. For castings with complex structures and special castings, there will still be more defects such as slag inclusions and pores. Therefore, the application of V-method casting to automobile axle housings must be based on specific develop a suitable method for the situation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Cast with the following steps:

[0021] 1) Model coating: the model is made of aluminum alloy, and the model is provided with air extraction holes, which are set on the negative pressure box. The model is pumped through the negative pressure box, and the film is coated on the surface of the model. Pasted on the model, the film is made of polyvinyl chloride, and it is required to heat the film before coating, and the heating temperature is 80 0 C, the heating time is 10min, the film thickness is 0.18mm, and the pumping pressure is 0.035MPa.

[0022] 2) Bond the riser, cut off the film at the position of the riser of the model with a blade, place the wooden mold of the riser, and glue it to ensure no air leakage.

[0023] 3) Model mask spray paint: After coating the film, spray paint on the surface of the film, the ratio of paint: alcohol 2:1 (weight ratio), spraying distance, the distance between the spray gun and the model mask is about 400~600mm. Spray the paint 1 to...

Embodiment 2

[0032] Cast with the following steps:

[0033] 1) Model coating: the model is made of aluminum alloy, and the model is provided with air extraction holes, which are set on the negative pressure box. The model is pumped through the negative pressure box, and the film is coated on the surface of the model. Pasted on the model, the film is made of polyvinyl chloride, it is required to heat the film before coating, and the heating temperature is 100 0 C, heating time 8min, film thickness 0.20mm, pumping pressure 0.045MPa.

[0034] 2) Bond the riser, cut off the film at the position of the riser of the model with a blade, place the wooden mold of the riser, and glue it to ensure no air leakage.

[0035] 3) Model mask spray paint: After coating the film, spray paint on the surface of the film, the ratio of paint: alcohol 3:1 (weight ratio), spraying distance, the distance between the spray gun and the model mask is about 400~600mm. Spray the paint 1 to 2 times, and it is required ...

Embodiment 3

[0044] Cast with the following steps:

[0045] 1) Model coating: the model is made of aluminum alloy, and the model is provided with air pumping holes, which are set on the negative pressure box. The model is pumped through the negative pressure box, and the film is coated on the surface of the model. Pasted on the model, the film is made of polyvinyl chloride, and it is required to heat the film before coating, and the heating temperature is 120 0 C, heating time 9min, film thickness 0.20mm, pumping pressure 0.055MPa.

[0046] 2) Bond the riser, cut off the film at the position of the riser of the model with a blade, place the wooden mold of the riser, and glue it to ensure no air leakage.

[0047] 3) Model mask spray paint: After coating the film, spray paint on the surface of the film, the ratio of paint: alcohol 4:1 (weight ratio), spraying distance, the distance between the spray gun and the model mask is about 400~600mm. Spray the paint 1 to 2 times, and it is required...

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Abstract

The invention relates to a casting method and in particular relates to a method for casting an automobile axle housing by a V method. The method comprises the steps of (1) covering a model with a film; (2) adhering a casting head; (3) spraying coating on the surface film of the model; (4) drying the coating; (5) performing sand compaction; (6) rotating a sand box after the sand box is lifted out, and putting a loam core and cold iron into the sand box; (7) combining an upper box and a lower box; (8) preparing furnace burdens; (9) performing pouring. According to the method disclosed by the invention, a casting is high in casting quality, high in yield and low in casting cost.

Description

technical field [0001] The invention relates to a casting method, in particular to a V-method casting method for an automobile axle housing. Background technique [0002] The automobile axle housing is the basic part for installing the main reducer, differential, half shaft, wheel hub and suspension. Its main function is to support and protect the above-mentioned parts. The automobile axle housing is usually formed by traditional casting methods. Binder is added to the sand, it is difficult to clean the castings, the amount of casting sand is large and cannot be recycled, the production cost is high, and the casting quality of the castings is poor. [0003] V method casting refers to the vacuum sealing molding method, also known as negative pressure molding method or decompression molding method. The prefix of the English word Vacuum is taken abroad, and the V method for short, originated in Japan. It uses plastic film to seal the sand box, pumping Vacuum makes dry sand int...

Claims

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Application Information

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IPC IPC(8): B22C9/03B22C9/24
Inventor 何拥军赖卫华何嘉圣何嘉贤唐辉龙杨学
Owner LIUZHOU JINTE NEW WEAR RESISTANT MATERIAL CO LTD
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