Airway structure in hearth of hard alloy and metal ceramic debinding furnace

Abstract

The invention relates to an airway structure in a hearth of a hard alloy and metal ceramic debinding furnace. The airway structure comprises an air inlet pipe, wherein the air inlet pipe passes through the tail end of the bottom of the hearth upwards, a first air guide pipe, a second air guide pipe and a third air guide pipe are arranged on the upper end of the air inlet pipe located in the hearth, and a fourth air guide pipe is arranged in a position, which is close to the bottom of the hearth, of the air inlet pipe located in the hearth; the first air guide pipe, the second air guide pipe, the third air guide pipe and the fourth air guide pipe are horizontally arranged in the axial direction of the hearth, the first air guide pipe and the third air guide pipe are respectively arranged onboth sides above a sintering area, the second air guide pipe is arranged just above the sintering area, and the fourth air guide pipe is arranged just below the sintering area. By adopting the structure, the uniformity of the carbon content and the volume shrinkage and weight loss rate of products in a debinding process can be guaranteed, and the problem of unstable performance of the matrix of current domestic metal ceramic products is solved.

Description

technical field [0001] The invention relates to the fields of mechanical processing and powder metallurgy, in particular to an air channel structure in a hearth of a hard alloy and cermet degreasing furnace. Background technique [0002] Ti(C,N)-based cermet tools have attracted widespread attention at home and abroad because of their high hardness, wear resistance, red hardness, excellent chemical stability and extremely low friction coefficient. They are mainly used in steel and cast iron. High-speed finishing. Ti(C,N)-based cermets have shown great potential as an upgraded alternative to traditional WC-Co cemented carbides. Its high-temperature hardness is better than that of high-speed steel and WC-based cemented carbide, and its toughness is better than that of ceramic and superhard material tools. It also just fills the gap between WC-based cemented carbide tools and ceramic tools in the processing range. [0003] In recent years, relevant departments in our country ...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a hard alloy and cermet degreasing furnace inner gas passage structure, which can ensure the uniformity of carbon content, volume shrinkage and weight loss rate of the product in the degreasing process, and solve the problem of the current domestic cermet The problem of unstable product matrix performance

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