A Forming Die for Preparing Dead Tubes of Thick Bottom Outer Light Metal Powder Filter Elements

A forming die and metal powder technology, applied in the field of forming dies, can solve problems such as deformation and depression of the head of the outer die, failure to see the forming die, loss of powder pressing force, etc., to improve yield and surface quality, improve efficiency, and improve effect of density

Active Publication Date: 2021-08-31
AT&M ENVIRONMENTAL ENG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some occasions, the bottom of the blind pipe of the filter element needs to be made with a light hole or a threaded hole to meet the needs of the filter element positioning and installation, which requires the preparation of a thick bottom (the thickness of the bottom is greater than the depth of the positioning hole, usually more than 1 times the wall thickness). Light metal powder filter core blind tube, but its forming die has not seen the relevant literature reports
[0003] We found that when the existing mold is used to prepare the blind tube of the thick-bottomed external light metal powder filter element, such as the mold disclosed in the Chinese utility model patents with the publication numbers CN201020535Y and CN201784027U, the inner rubber sleeve often occurs in the direction of about 45 degrees on the head Problems such as tearing, deformation and depression of the outer mold head
The working fluid in the isostatic pressing equipment enters the powder layer from the cracks, resulting in loss of powder compression force and forming failure
[0004] At present, the manufacturing of thick-bottomed external light filter blind tubes mostly adopts a step-by-step forming method. The first is to prepare the external light tube by isostatic pressing, the second is to manufacture the bottom separately, and finally weld them together. This process is long, time-consuming and labor-intensive. And one more welding joint, another weak link

Method used

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  • A Forming Die for Preparing Dead Tubes of Thick Bottom Outer Light Metal Powder Filter Elements
  • A Forming Die for Preparing Dead Tubes of Thick Bottom Outer Light Metal Powder Filter Elements

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Embodiment Construction

[0029] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or terminal equipment comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements identified, or also include elements inherent in such a process, method, article, or end-equipment. ...

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Abstract

The invention discloses a forming mold for preparing a blind pipe of a thick-bottomed outer light metal powder filter element, which comprises an outer mold and an inner mold coaxially arranged, the gap between the inner mold and the outer mold can accommodate the filter core, and the inner mold is composed of The support tube positioned by the outer mold and the inner rubber sleeve set on the outer surface of the support tube; the support tube is a blind tube, and the blind end is tapered or hemispherical tapering shape, opening at 45 degrees at the end There is an annular groove, and the inner rubber sleeve is embedded in the groove; the pipe wall of the support pipe is evenly opened, and the bottom of the groove is symmetrically opened with a plurality of small holes along the circumference. The forming mold for preparing the blind tube of the thick-bottomed external light metal powder filter element provided by the present invention ensures the quality during the forming process of the thick-bottom external light metal powder filter core dead tube. The rubber sleeve is broken, the tube blank is damaged, etc., which simplifies the production process, eliminates the problem of external mold deformation, and reduces the production cost.

Description

technical field [0001] The invention relates to the technical field of molds, in particular to a forming mold. Background technique [0002] Metal powder filter element is a commonly used metal filter material, which has the advantages of high filtration precision, large flux, small resistance, high temperature resistance, good purging effect, and long life. It is widely used in petroleum, chemical, coal, nuclear industry, polysilicon , environmental protection, and fine chemical industry and other process industries such as filtration, separation, gas distribution, current limiting and other fields. Metal powder filter elements are usually formed by isostatic pressing. According to the forming characteristics of the filter element, they can be divided into two types: internal light filter element (also known as external pressure internal light type) and external light type filter element (or internal pressure external light type). The core rod of the internal light type fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/14B22F5/12
CPCB22F3/1208B22F3/15B22F5/10B22F2003/153
Inventor 霍光陆有俊杨军军匡星刘冠颖王凡郭辉进范胜
Owner AT&M ENVIRONMENTAL ENG TECH CO LTD
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