Forming die for preparing thick bottom outer-smooth metal powder filter element blind tube

A technology for forming molds and metal powders, applied in the field of forming molds, can solve problems such as deformation of the outer mold head, no visible forming molds, loss of powder pressing force, etc., so as to improve the yield and surface quality, improve efficiency, and improve Density effect

Active Publication Date: 2019-11-19
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 outer light metal powder filter element, such as the mold disclosed in the Chinese utility model patents with the publication numbers CN201020535Y and CN201784027U, the internal 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

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  • Forming die for preparing thick bottom outer-smooth metal powder filter element blind tube
  • Forming die for preparing thick bottom outer-smooth metal powder filter element blind tube

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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 die for preparing a thick bottom outer-smooth metal powder filter element blind tube. The forming die comprises an outer die body and an inner die body coaxial with the outer die body, and a filter element can be contained in a gap between the inner die body and the outer die body. The inner die body comprises a supporting tube positioned by the outer die body andan inner rubber sleeve arranged on the outer surface of the supporting tube in a sleeving mode. A blind tube serves as the supporting tube, the blind end of the blind tube is in a conical or semi-spherical shape becoming thinner gradually, an annular groove is formed in the 45-degree direction of the end of the blind tube, and the inner rubber sleeve is embedded in the groove. Holes are evenly formed in the tube wall of the supporting tube, and a plurality of small holes are symmetrically formed in the periphery of the bottom of the groove. According to the forming die for preparing the thickbottom outer-smooth metal powder filter element blind tube, quality is ensured in the forming process of the thick bottom outer-smooth metal powder filter element blind tube, the thick bottom outer-smooth blind tube can be formed at a time, the situations of rupture of the inner rubber sleeve, breaking of a tube blank and the like can be effectively avoided, the production process is simplified,the problem of deformation of the outer die body is solved, and meanwhile production cost is reduced.

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 Applications(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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