Method for producing permeability type die steel

A manufacturing method and air-permeable technology, applied in the field of mold manufacturing, can solve problems such as the inability to effectively control the size, position and continuity of the air-permeable holes, the inability to ensure 100% guarantee, and the inability to achieve air permeability, etc., to increase processing time, improve quality, Balance the effect of internal and external pressure differences

Inactive Publication Date: 2008-07-16
FAR EAST COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the air-permeable holes in the porous metal with microporous structure are arranged irregularly, it is impossible to effectively control the size, position and continuity of the air-permeable holes during powder metallurgy molding, so once each The ventilation holes are not connected continuously, and if there is an interruption, the air permeability will not be achieved, so the ventilation function cannot be guaranteed 100%, so it is still not ideal in use

Method used

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  • Method for producing permeability type die steel
  • Method for producing permeability type die steel
  • Method for producing permeability type die steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: as figure 1 Shown, the manufacture method step of air-permeable mold steel of the present invention is as follows:

[0042] (1) Constructing a forming mold: referring to Fig. 2, at the peripheral edge of the flat plate 1, four fixed blocks 2 are used to stack and fix relative to each other, forming a forming mold with accommodating space 21 in a circle, and the four fixed blocks 2 There are several tiny through-holes 22 arranged equidistantly on the top (see FIG. 3 ), and a polymer wire 23 is connected to each through-hole 22 on the opposite fixed block 2, through which the criss-cross polymer wires 23 , can be densely distributed in the accommodating space 21 surrounded by the fixed block 2 . The shape of the fixed block 2 of this molding die can be set according to the desired shape of the mould.

[0043] (2) Forming the green embryo: see Figure 4, after mixing the metal powder and the binder, put it into the accommodation space 21 surrounded by the fi...

Embodiment 2

[0047] Embodiment 2: as Figure 8 and Figure 9 Shown, the manufacture method step of air-permeable mold steel of the present invention is as follows:

[0048] (1) Constructing the forming mold: on the flat plate 1, use one or more frame-shaped fixing blocks 2 to stack up and down to fix, and insert a mesh-shaped polymer wire 23 into each fixing block 2; After one or more fixed blocks 2 are stacked, they encircle a forming mold with an accommodating space 21 , and the mesh-shaped polymer wires 23 are stacked in the accommodating space 21 at appropriate intervals.

[0049] Step (2), step (3) and step (4) are basically consistent with those in Embodiment 1, until a finished metal product 32 with vent holes is completed (see Figure 7 ), which will not be repeated here.

Embodiment 3

[0050] Embodiment 3: as Figure 10 and Figure 11 Shown, the manufacture method step of air-permeable mold steel of the present invention is as follows:

[0051] (1) Constructing the forming mold: First, a number of polymer wires 23 are vertically penetrated and fixed on the bottom plate 8, and then one or more frame-shaped fixing blocks 2 are used to stack and fix, and each fixed block 2 , a mesh-like polymer wire 23 is inserted. After one or more fixed blocks 2 are stacked, they encircle a forming mold with an accommodating space 21, and the vertical polymer wires 23 and the mesh-like polymer wires 23 are located in the accommodating space at appropriate distances from each other. Within 21. After mixing the metal powder and the binder, put it into the above-mentioned accommodating space 21, and then cover the cover plate 6 on the top, the cover plate 6 is provided with a cover plate through-hole 7 relative to the polymer wire 23 for the polymer wire 23 through fixed.

...

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Abstract

A technology for producing the air-permeable mould steel includes such steps as stacking the fixing blocks to form a shaping mould with a moulding cavity, arranging the high-molecule wires in the moulding cavity, mixing metallic powder with adhesive, loading the mixture into said moulding cavity until said high-molecular wires are fully wrapped, heating for smelting said mixture while gasifying said wires to generate air permeable holes, and cooling.

Description

technical field [0001] The invention mainly relates to the field of mold manufacturing, in particular to a method for manufacturing breathable mold steel. Background technique [0002] In the existing technology, the level of precision manufacturing technology continues to improve, and the design of various mechanical and electronic parts has tended to focus on the development and design of "micro-components". Therefore, under the requirements of precision and reliability, its parts Mold manufacturing is very important, but because the mold for manufacturing parts has poor air permeability, when the parts are injection molded, it is easy to form water-like "flow lines" on the surface of the parts, which affects the appearance of the parts; and for For parts with relatively thin cross-sections, when the mold is opened after forming, the pressure difference between the inside and outside of the mold will cause the parts to break or break when they are ejected, resulting in a h...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B22F7/06
Inventor詹添印林舜天李晋升
OwnerFAR EAST COLLEGE