Machining process for reducing side wall shrinkage of shell cast parts

A processing technology and casting technology, which is applied in the field of processing technology to reduce the shrinkage cavity of the side wall of the shell casting, can solve the problems of easy occurrence of shrinkage cavity and affect the performance of the shell casting, so as to reduce the weight, avoid the shrinkage cavity defect, and improve the resistance. The effect of pressure

Inactive Publication Date: 2018-07-06
CHONGQING BAIJI SIXING DIE CASTING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide a processing technology for reducing the shrinkage cavity on the side wall of the shell casting to solve the problem that the shell casting is prone to shrinkage during the processing process and affects the performance of the shell casting

Method used

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  • Machining process for reducing side wall shrinkage of shell cast parts
  • Machining process for reducing side wall shrinkage of shell cast parts

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Embodiment Construction

[0032] Further detailed explanation through specific implementation mode below:

[0033] The reference signs in the drawings of the description include: movable mold 1, fixed mold 2, mold cavity 3, inner cavity 4, baffle plate 5, through groove 6, first slider 7, second slider 8, door body 9, Latches 10, hydraulic cylinders 11, push plates 12, push rods 13, first gears 14, second gears 15, racks 16, cutters 17.

[0034] This embodiment provides a processing technology for reducing the shrinkage cavity on the side wall of the casing casting, which includes the following steps:

[0035] Step 1. Prepare the mold: In this step, the existing mold needs to be improved, and the improved mold is as follows figure 1 , figure 2 As shown, the mold includes a movable mold 1 and a fixed mold 2, and the mold cavity 3 is formed when the movable mold 1 and the fixed mold 2 are closed; The left end of the inner chamber 4 is fixedly connected with a baffle plate 5, and two transverse throug...

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Abstract

The invention relates to the technical field of metal casting and particularly discloses a machining process for reducing side wall shrinkage of shell cast parts. The process comprises the following steps of (1) preparing dies; (2) assembling the dies, specifically, the movable die and the fixed die are assembled through a die assembly press, and a die cavity for cast part forming is formed; (3) preheating the dies, specifically, the movable die and the fixed die are preheated to be 170-220 DEG C; (4) performing filling, specifically, a high-temperature liquid material is pressed into the diecavity from a pouring opening at the pressure intensity of 100-130 MPa till completely filling the die cavity; (5) performing die-cast formation; and (6) taking out the cast parts, specifically, the die assembly press is started, the movable die and the fixed die are separated, and the cast parts are taken out. By means of the machining process for reducing side wall shrinkage of the shell cast parts, the wall thickness of the cast parts can be reduced, the strength of the cast parts is improved while the weight of reduced, shrinkage is reduced at the same time, the qualified rate of the castpart products is improved, raw materials are saved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of metal casting, and specifically discloses a processing technology for reducing shrinkage cavity on the side wall of a shell casting. Background technique [0002] At present, many shell castings are manufactured by casting aluminum alloy die castings. During the manufacturing process, due to the complex structure of the shell casting, the uneven thickness of the shell wall, and the poor flow performance of the molten aluminum alloy, there will be air entrapment when the molten aluminum alloy is injected into the mold cavity during the pouring process. , Insufficient pouring of molten aluminum alloy causes defects such as air holes and shrinkage cavities in shell castings, which affects performance. [0003] In addition, due to the contact between the outside of the molten aluminum alloy and the inner surface of the mold cavity, the external cooling rate of the molten aluminum alloy is higher than the int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D17/20
CPCB22D17/2069B22D17/2076
Inventor 冉志刚
Owner CHONGQING BAIJI SIXING DIE CASTING
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