A powder metallurgy mold

Abstract

The invention relates to a powder metallurgy die which comprises a male die and a female die. The female die comprises a female die jacket (11) and a female die core (12), the female die jacket (11) is sleeved on the female die core (12) to form an integral structure, a spiral oil groove (13) is arranged on the inner annular surface of the female die jacket (11), and the spiral oil groove (13) and external temperature-controllable hot oil form a hot oil circuit. The powder metallurgy die is characterized in that a supporting device (7) is arranged between the male die and the female die. Supporting blocks and a supporting base are connected with one another at two ends of a connecting rotary frame by mounting holes, and the supporting blocks can be positioned above the supporting base or can be separated from the supporting base, so that the die can be effectively protected against stress when not working, the supporting device can be prevented from being lost during operation, and the powder metallurgy die can be operated easily and conveniently.

Description

technical field [0001] The invention relates to a powder metallurgy mold, in particular to a powder metallurgy mold. Background technique [0002] Powder metallurgy is a processing method for producing metal powder and making a mixture of metal powder or non-metal powder into products through molding and sintering processes. It can not only produce special materials that are difficult to produce by ordinary smelting methods, but also manufacture various Precise mechanical parts, saving labor and materials. [0003] In order for the mold to heat the raw materials in the cavity of the powder metallurgy mold, or to control the temperature, it is necessary to heat or control the temperature of the powder metallurgy mold. So far, there are two main methods of mold heating in the powder metallurgy industry: the heating method using heating rods or electromagnetic induction heating and the heating method using hot oil jackets. [0004] Specifically, the following structures are a...

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Problems solved by technology

[0015] The present invention designs a powder metallurgy mold, which solves the technical problems of (1) the existing powder metallurgy mold has a complex heating structure, uneven heating temperature, low thermal conductivity, and deformation of the mold base due to uneven heating; (2) ) When the compact in the existing powder metallurgy forming die is released from the mold, the residual stress will cause the compact to produce cracks, which seriously affects the quality of the compact product; (3) when the existing mold is replaced, the male mold and the female All molds were replaced, resulting in long replacement time, high labor intensity and unstable replacement quality.

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