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Industry dynamic
Boron treatment on the surface of steel screw cylinder
Author：admin Addtion Date：2018-03-20 View：1341
Most of the screw and barrel are due to the large gap caused by wear and tear, which can not be extruded normally and injecting. There are few failures due to insufficient strength. In particular, in the design of the barrel, besides considering the strength, more consideration should be given to the public welfare and thermal inertia of the structure, and the wall thickness determined by the latter two factors is far greater than that of the strong. The calculation values of degree conditions. The 45 steel and 40Cr steel chromium plated screw and barrel in China are usually used in the work, because the coating is not uniform and the fastness of the collectives is low. It produces partial shedding in the work and causes rapid wear or corrosion. Compared with only the nitriding screw and the barrel, it is widely used at present, and its deficiency is the high price of nitriding steel. The corrosion resistance of the nitriding layer to hydrogen chloride is low, and the surface hardness and wear resistance are difficult to meet the need to tell the extrusion, injection and processing reinforced plastics. The improvement of the surface hardness and wear resistance of the extruder screw, the screw and the barrel of the injection molding machine has become the key technology in the plastic processing industry to improve the productivity, improve the plasticizing quality and reduce the production cost. In this paper, the feasibility and experimental research of Boronizing Process on the surface of 45 steel screw and barrel are carried out, and verified by the form of product installation.
