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Pressure casting mould and its preparing method

A technology of die-casting mold and die cavity, which is applied in the field of die-casting mold and its preparation, can solve problems such as low service life, restriction, and inability to fully meet the working performance requirements of die-casting mold, and achieve the effect of increasing service life and reducing temperature change range

Inactive Publication Date: 2008-01-02
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it still cannot fully meet the requirements of the working performance of the die-casting mold.
Especially the die-casting of ferrous metals cannot be widely applied due to the restriction of mold materials
The existing die-casting mold has a low service life, which seriously restricts the improvement of the technical level and economic benefits of the die-casting mold

Method used

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  • Pressure casting mould and its preparing method

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Embodiment Construction

[0022] As shown in Figure 1, a die-casting mold is mainly composed of a base part 1, a transition layer part 2 and a cavity surface coating 3. The volume of the base part 1 accounts for 90-95%, and the base part 1 adopts an ordinary die-casting mold 5CrNiMo steel or 5CrMnMo steel; the transition layer part 2 is located between the base part 1 and the cavity surface coating 3, the transition layer part 2 is divided into 4 layers, the material of the first transition layer is H13, and the material of the second transition layer is H19 , the material of the third transition layer is 6W5Cr4V2, the material of the fourth transition layer is steel-bonded cemented carbide; the material of the cavity surface coating 3 is WC or TiC; the base part 1, the transition layer part 2 and the cavity surface coating The materials of 3 are each homogeneous materials.

[0023] The preparation method of above-mentioned a kind of die-casting mould, comprises the steps:

[0024] 1. A die-casting pa...

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Abstract

The present invention relates to a die-casting die and its preparation method. It is mainly formed from matrix portion, transition layer portion and die cavity surface coating layer portion, in which the volume of matrix portion is 90-95%, the matrix portion adopts general die-casting die 5CrNiMo steel or 5CrMnMo steel; the transition layer portion is positioned between matrix portion and die cavity surface coating layer, said transition layer portion is divided into 2-6 layers; and the material of die cavity surface coating layer is Wc or Tic. The materials of matrix portion, transition layer portion and die cavity surface coating layer are homogeneous ones respectively.

Description

technical field [0001] The invention relates to a die-casting mold and a preparation method thereof, in particular to a die-casting die used in the production of ferrous or non-ferrous metal castings and a preparation method thereof. Background technique [0002] The working conditions of the die-casting mold are very harsh. It bears high temperature, high pressure and periodic thermal-mechanical load. It is required that the die-casting mold material has good high-temperature strength, high-temperature toughness, high-temperature wear resistance and fatigue performance of periodic thermal load and mechanical load. . Existing die-casting molds are composed of die-casting die steel and surface cladding of die cavity, and all kinds of die-casting die steels used at home and abroad cannot fully meet the working performance requirements of die-casting dies. In particular, the tough performance index at high temperature and the toughness and fatigue resistance index are two cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D17/22
Inventor 王华昌刘秀娟盛志刚陈永波吴彦西杨春
Owner WUHAN UNIV OF TECH
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