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Combined die for preparing powder metallurgy part

A technology of powder metallurgy and combined mold, which is applied in the field of powder sintering, can solve the problems of wasting time and reducing the service life of the mold, and achieve the effect of simple mold structure, improved service life of the mold, and convenient operation

Inactive Publication Date: 2017-06-20
韩莹 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing molds used to prepare powder metallurgy preforms can only prepare samples of one shape or proportion in one sintering process, and usually the one-time sintering process lasts for more than 4 hours, which wastes time and reduces the use of molds life

Method used

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  • Combined die for preparing powder metallurgy part
  • Combined die for preparing powder metallurgy part
  • Combined die for preparing powder metallurgy part

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Embodiment Construction

[0013] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings. The invention discloses a combined mold for preparing powder metallurgy parts. The mold includes an outer mold 1, a sleeve 2, a sleeve 3, an inner mold 4 placed in the sleeve 3, an inner mold 5, an upper pressing head 6 and a lower pressing head. The indenter consists of 7 components. Wherein an annular die cavity is formed by sleeve 2, sleeve 3, inner mold 5 and lower pressure head 7; A cylindrical die cavity is formed by sleeve 3, inner die 4 and inner die 5, is equipped with in the die cavity Prepare metal powder or alloy powder for powder metallurgy parts.

[0014] Wherein, the materials of the outer mold 1, the sleeve 2, the sleeve 3, the inner mold 4 and the inner mold 5 placed in the sleeve 3, the upper ram 6 and the lower ram 7 are all graphite.

[0015] The inner diameter of the outer mold 1 is equal to the outer diameter of the ...

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Abstract

The invention discloses a combined mold for preparing powder metallurgy parts. The mold consists of an outer mold, a sleeve I, a sleeve II, an inner mold I and II placed in the sleeve II, and an upper and a lower pressing head. The inner diameter of the outer mold is equal to the outer diameter of the sleeve I, and the inner diameter of the sleeve II is equal to the diameters of the inner mold I and the inner mold II. The cylindrical protrusion corresponding to the groove; an annular cavity is formed by the sleeve Ⅰ, the sleeve Ⅱ, the inner mold Ⅱ and the lower pressure head; a cylindrical cavity is formed by the sleeve Ⅱ, the inner mold Ⅰ and the inner mold Ⅱ, The cavity is filled with metal powder or alloy powder for the preparation of powder metallurgy parts. The beneficial effect of the present invention is that: the mold can be simultaneously sintered to prepare annular parts and shaft parts with different proportions, which improves the sintering efficiency and the service life of the mold, and the mold structure is simple, easy to operate, and graphite is used as raw material, and the cost is relatively low. Low.

Description

technical field [0001] The invention relates to the technical field of powder sintering, in particular to a combined mold for preparing powder metallurgy parts and a use method thereof. Background technique [0002] Powder metallurgy technology is a process method in which mixed powders with different proportions are made into porous or dense materials through processes such as cold pressing and hot pressing sintering. Powder metallurgy technology has the characteristics of energy saving, material saving, high product precision, etc., and can prepare complex parts that cannot be prepared by traditional mechanical processing methods. However, the existing molds used to prepare powder metallurgy preforms can only prepare samples of one shape or proportion in one sintering process, and usually the one-time sintering process lasts for more than 4 hours, which wastes time and reduces the use of molds life. Contents of the invention [0003] The invention provides a combinatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/03
Inventor 韩莹
Owner 韩莹
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