A hydrogen flow regulating device for vertical melting and sintering of tungsten alloy materials

Abstract

The invention discloses a hydrogen gas flow regulating device for tungsten alloy material incipient fusion sintering. The device is arranged on a hydrogen supplying pipe (1) of an incipient fusion hood and is electrically connected with an incipient fusion sintering control system (5). One segment of the hydrogen supplying pipe (1) is composed of two hydrogen supplying branches (2) connected in parallel. One of the hydrogen supplying branches (2) is a small-flow hydrogen supplying branch, and the other hydrogen supplying branch (2) is a large-flow hydrogen supplying branch. The two hydrogen supplying branches (2) are provided with hydrogen gas flow meters (3) respectively. The large-flow hydrogen supplying branch is provided with an electromagnetic valve (4) for controlling on-off of the large-flow hydrogen supplying branch, and the electromagnetic valve (4) is electrically connected with the incipient fusion sintering control system (5). By means of the hydrogen gas flow regulating device for tungsten alloy material incipient fusion sintering, the flow of hydrogen gas entering the incipient fusion hood can be regulated, the proper hydrogen gas flow can be provided for incipient fusion sintering in the heating, heat preservation and cooling periods, and the purposes of saving the hydrogen gas and the cost are achieved.

Description

technical field [0001] The invention relates to the technical field of vertical fusion sintering, in particular to a hydrogen flow regulating device for vertical fusion sintering of tungsten alloy materials. Background technique [0002] Vertical melting sintering is an important process for the production of doped tungsten, tungsten aluminum, tungsten rhenium and other substances. It is to install the pre-fired billet between the upper and lower chucks of the vertical melting machine, and under the protection of hydrogen, through the process The process of heating with a specified current to sinter, shrink, and densify the billet, and finally obtain a tungsten bar with certain properties. [0003] The vertical fusion sintering is carried out under the protection of hydrogen. Since hydrogen is a flammable and explosive gas, during the vertical fusion sintering process, there must be a large enough flow of hydrogen to keep the vertical fusion cover in all sintering processes....

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, each operator has to control more than a dozen vertical melting machines, and the labor intensity is quite high. They cannot manually adjust the hydrogen flow into the vertical melting cover according to different vertical melting sintering stages. Therefore, in actual production, All stages of vertical melting and sintering adopt a large hydrogen flow rate, that is, the hydrogen flow rate remains unchanged throughout the vertical melting and sintering process, which undoubtedly causes a lot of waste and increases the production cost of the enterprise

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