Forming device and forming method of lining tube for ultrahard material synthesis

Abstract

The invention relates to a forming device and a forming method of a lining tube for ultrahard material synthesis. The device is formed by connecting combination of an upper template, a female template, a lower template, a mold core plate, an adjusting and supporting mechanism, a die holder and a female template lifting mechanism from the top to the bottom in turn. The device has reasonable structure design, and the relative distance of each template thereof can be accurately controlled and positioned; the forming method that the bottom part of the lining tube and the cylinder body part are pressed twice is used so that the uniformity of the density and the combination firmness of each part of the lining tube can be ensured, the uniformity of thermal conductivity coefficient and the impactstrength of each part of the lining tube can be ensured in the using process, and the effects of prolonging service life and reliable use performance can be realized.

Description

technical field [0001] The invention belongs to the technical field of auxiliary tooling for hydraulic presses, in particular to a lining pipe forming device and forming method for synthesizing superhard materials used in powder hydraulic presses. Background technique [0002] In the powder metallurgy process of superhard materials such as artificial diamond and cubic boron nitride, the inner liner is a main process component used in the synthetic process of synthetic diamond or cubic boron nitride, and its compressive strength and The uniformity of heat conduction has higher requirements. However, in the prior art, its production is usually done by pressing a punch and a die on a press at one time. Since the inner liner is a short cup-shaped structure composed of a flat bottom and a cylindrical part, there are generally structural characteristics and uneven pressure transmission. , leading to uneven density of the inner liner, especially the loose joint between the bottom ...

AI Technical Summary

Problems solved by technology

However, in the prior art, its production is usually done by pressing a punch and a die on a press at one time. Since the inner liner is a short cup-shaped structure composed of a flat bottom and a cylindrical part, there are generally structural characteristics and uneven pressure transmission. , leading to uneven density of the inner liner, especially the loose joint between the bottom of the inner liner and the barrel, resulting in a large difference in thermal conductivity of each part during use, low strength of the loose part, poor joint fastness, and easy cracking. The effect is not good, which seriously affects the synthetic production of superhard materials, resulting in the reduction or scrapping of synthetic products

So far, this problem has not been satisfactorily resolved

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