Die-casting die casting system for magnesium alloy automobile engine cylinder head casing

A technology of automobile engine and pouring system, which is applied in the direction of cylinder head, engine components, machine/engine, etc. It can solve the problems of difficult to guarantee the quality of die casting parts, waste of raw material energy consumption, high cost loss, etc., to reduce energy consumption of enterprises, filling Smooth and reduce the effect of shrinkage and porosity

Inactive Publication Date: 2009-09-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] At present, the engine cylinder head cover uses the original pouring system, which is prone to defects such as shrinkage cavity, air hole, cold seal and insufficient pouring during the die-ca...

Method used

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  • Die-casting die casting system for magnesium alloy automobile engine cylinder head casing
  • Die-casting die casting system for magnesium alloy automobile engine cylinder head casing
  • Die-casting die casting system for magnesium alloy automobile engine cylinder head casing

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Embodiment Construction

[0011] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0012] The present invention mainly aims at defects such as shrinkage cavity, air hole and cold shut in the original gating system during the die-casting molding process, improves its structure on the basis of the original gating system, and conducts a reasonable design and layout of the overflow system, And use the special numerical simulation software JSCAST for casting to simulate the velocity field and temperature field of the filling process, so as to optimize the size of the runner and overflow system of the gating system. The optimized gating system has laid the foundation for ensuring the quality of die castings. At the same time, the total volume of the optimized castings is reduced by 6.9% compared with the original one, which is of practical significance for enterprises to reduce energy consumption and save costs.

[0013] This emb...

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Abstract

The invention discloses a die-casting die casting system for a magnesium alloy automobile engine cylinder head casing. The casting system is a passage for metal liquid to enter a cylinder head casing die cavity and comprises a main channel, a straight channel, a transversal channel and an inner casting opening; the casting opening is an inlet of a passage between the rear end of a transversal casting channel and a casting before the metal liquid enters the cylinder head casing die cavity and is connected with the transversal casting channel which is connected with the straight channel, and the straight channel is connected with the main channel; each displacement system comprises an overflow groove and an exhaust groove, a plurality of displacement systems are uniformly distributed at both sides of the die cavity, wherein one side of each overflow groove is connected with the cylinder head casing die cavity, and the exhaust groove is connected with the other side of each overflow groove. The invention can realize stable filling and smooth demolding in the die-casting process, has the advantages of simple structure, strong maneuverability, and the like, can lessen defects such as shrinkage porosities, shrinkage cavities, air holes, coldshut, insufficient casting, and the like on the size design of the displacement system to a great extent and can reduce the casting size to a great extent.

Description

technical field [0001] The invention relates to the technical field of pouring systems for die-casting molds, in particular to a pouring system for die-casting molds for magnesium alloy automobile engine cylinder head covers. Background technique [0002] The gating system is the channel through which molten metal enters the cavity. A reasonable gating system structure plays an important role in ensuring the quality of castings. The gating system is closely related to the metal state and gas discharge in the cavity, and can adjust the filling conditions such as filling speed, filling time, and cavity temperature. However, an unreasonable gating system will lead to defects such as pores, shrinkage porosity, cold shut and poor surface finish. On the other hand, in the design process of casting gating system, designers often take the designed gating system to produce qualified die castings as the criterion. Therefore, the designed gating system can generally produce qualified ...

Claims

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Application Information

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IPC IPC(8): B22D17/30B22D17/22B22D21/04F02F1/24
Inventor 林颖张百在胡清明刘斌余熳烨
Owner SOUTH CHINA UNIV OF TECH
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