Oxalic acid catalyst and nitric acid catalyst general catalytic degreasing furnace

Abstract

The invention discloses an oxalic acid catalyst and nitric acid catalyst general catalytic degreasing furnace, and relates to the technical field of catalytic degreasing furnaces. The oxalic acid catalyst and nitric acid catalyst general catalytic degreasing furnace comprises an oxalic acid conveying device, a fixing box, a mounting frame, a bottom box, an operation panel and a furnace body; a furnace body acid inlet is formed in the top of the furnace body, the bottom of the mounting frame and one side of the top of the fixing box are fixedly connected, the oxalic acid conveying device comprises an oxalic acid storage chamber and an oxalic acid volatilization chamber, the bottom of the oxalic acid storage chamber is fixedly connected with the top of the mounting frame through a support, an oxalic acid extrusion device is fixedly connected into the mounting frame, and the top of the oxalic acid volatilization chamber communicates with a first abut-joint heating pipe. The oxalic acid catalyst and nitric acid catalyst general catalytic degreasing furnace generally uses concentrated nitric acid and an oxalic acid catalyst on one device, a user can selects the proper catalyst for degreasing according to product actual needs, different use needs are met, and the practicability of the catalytic degreasing furnace is greatly improved.

Description

technical field [0001] The invention relates to the technical field of catalytic degreasing furnaces, in particular to a general-purpose catalytic degreasing furnace for oxalic acid catalysts and nitric acid catalysts. Background technique [0002] Catalytic degreasing furnace is a kind of equipment used in metal powder injection molding technology to degrease products. Its principle is to use nitric acid or oxalic acid as a catalyst and depolymerize the organic carrier molecule polyoxymethylene at a specific temperature. It is a small volatile formaldehyde gas molecule, which can gradually emit from the embryo body, so as to achieve the purpose of degreasing the product. [0003] Due to the low reaction temperature of concentrated nitric acid catalyzed polyoxymethylene, the nitric acid catalyzed degreasing furnace will not damage the structure of the product, the degreasing rate is fast, the product has high precision after sintering, stable size, accurate and convenient ac...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a general-purpose catalytic degreasing furnace for oxalic acid catalyst and nitric acid catalyst, which solves the problem that the existing catalytic degreasing furnace cannot switch suitable catalyst types for degreasing according to the requirements of degreasing products required

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