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Die casting technology for shrinkage-prevention die casting

A die-casting process and die-casting technology, which is applied in the field of die-casting process of anti-shrinkage die-casting, can solve the problems that the density is difficult to meet the pressure resistance requirements of the casting, shrinkage cavities, and high defective rate, and achieve high density and increase the filling rate. degree, the effect of solving shrinkage cavities and shrinkage porosity

Inactive Publication Date: 2016-08-03
安徽纯启动力科技有限公司
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Problems solved by technology

[0002] At present, when the die-casting mold is used for die-casting, since the outside of the liquid metal is in contact with the surface of the mold, the cooling speed of the outside is faster than that of the inside. There is often looseness at the hot joint. If it is planned to process holes or grooves in this part, it will often lead to shrinkage. In addition, if machining is performed here, the internal loose tissue will be exposed. Its density is difficult to meet the pressure requirements of castings, resulting in a high rate of defective products

Method used

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  • Die casting technology for shrinkage-prevention die casting

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Embodiment Construction

[0028] The following combination figure 1 The present invention will be further described in detail with specific embodiments.

[0029] figure 1 It is a die-casting mold used in the anti-shrinkage cavity die-casting process, including: a fixed mold seat plate 2 and a movable mold seat plate 9, and a fixed mold fixed plate 3 is installed on one side of the fixed mold seat plate 2 facing the movable mold seat plate 9 And the fixed mold cover plate 4, the movable mold base plate 9 is equipped with the movable mold cover plate 11 and the push rod fixing plate 8 on the side facing the fixed mold base plate 2, and the push rod 7 and the ejector rod are installed on the push rod fixing plate 8 10. There is a die-casting cavity 12 forming a die-casting part 13 between the fixed mold cover plate 4 and the movable mold cover plate 11, and a die-casting cavity 12 communicating with the die-casting cavity 12 is provided on the fixed mold cover plate 4 and the fixed mold fixed plate 3. P...

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Abstract

The invention discloses a die-casting process for anti-shrinkage cavity die-casting parts. The die-casting method comprises the following steps: starting the die-casting machine → installing the mold → debugging the mold → cleaning the preheated mold → spraying paint → closing the movable mold and the fixed mold → pouring →holding pressure→feeding and compaction→pressurization→separation of movable mold and fixed mold→push out the die casting→cut off the riser and gate on the die casting→saturate the die casting→surface the die casting. The die-casting process of this kind of anti-shrinkage cavity die-casting effectively solves the problems of product shrinkage and porosity, and finally obtains dense and intact parts, reducing the defective rate.

Description

technical field [0001] The invention relates to the field of die-casting production, in particular to a die-casting process for anti-shrinkage cavity die-casting parts. Background technique [0002] At present, when the die-casting mold is used for die-casting, since the outside of the liquid metal is in contact with the surface of the mold, the cooling speed of the outside is faster than that of the inside. There is often looseness at the hot joint. If it is planned to process holes or grooves in this part, it will often lead to shrinkage. In addition, if machining is performed here, the internal loose tissue will be exposed. Its density is difficult to meet the pressure requirements of castings, resulting in a high rate of defective products. [0003] Therefore, it is an urgent problem to be solved in the present invention to provide a die-casting process for anti-shrinkage die-casting parts that can reduce the defective rate. Contents of the invention [0004] Aiming ...

Claims

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Application Information

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IPC IPC(8): B22D17/00B22D17/20B22D17/30B22D17/22
CPCB22D17/00B22D17/2069B22D17/22B22D17/30
Inventor 夏纯翠
Owner 安徽纯启动力科技有限公司
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