Impact crusher plate hammer made of high-chromium cast iron-based ZTA ceramic composite material and manufacturing method of impact crusher plate hammer

Abstract

The invention discloses a high-chromium cast iron-based ZTA ceramic composite material impact crusher plate hammer and a manufacturing method thereof. The manufacturing method comprises the following steps: manufacturing a rigid metal mold; the first area and the second area are filled with high-chromium cast iron-ZTA mixed powder, and the third area is filled with high-chromium cast iron mixed powder; the cavity is covered with a top plate of a metal mold, the top plate is pressurized, the high-chromium cast iron mixed powder and the high-chromium cast iron-ZTA mixed powder are formed, and a powder forming body is obtained; the powder forming body is placed in a box-type furnace to be heated and dried, and a composite board hammer powder model body is formed; and the composite plate hammer powder model body is put into an atmosphere furnace to be heated, sintered and densified to be formed, and the integral type wear-resisting plate hammer with the structural body and the wear-resisting striking body being metallurgically combined is obtained. The high-chromium cast iron composite impact crusher plate hammer with ZTA dispersed on the working face is successfully manufactured, the whole plate hammer obtains a compact structure and performance, the working face ZTA is tightly combined with the high-chromium cast iron, and ultrahigh wear resistance is obtained.

Description

technical field [0001] The invention belongs to the field of mining engineering machinery crushing, and particularly relates to a method for manufacturing a plate hammer of a high-strength and high-wear-resistance impact crusher. Background technique [0002] The blow hammer of the impact crusher is a key part installed in the continuous crushing station, which realizes the crushing of the demolition of mines, buildings and road facilities. The impact crusher plate hammer is responsible for hitting, shearing and abrading the broken objects. Martensitic steel and high-chromium cast iron have been used to a certain extent in the manufacturing process of the overall material. In view of the insufficient service life, the manufacture of ceramic composite plate hammers is now developed. [0003] Invention patent CN103769562B "A preparation method of active element sintered ZTA particle reinforced steel-based composite hammer". Metal elements such as Ni, Cr, 70-80% ZTA and borax s...

AI Technical Summary

Problems solved by technology

[0005] In view of the short service life of the blow bar of various existing impact crushers, the low crushing efficiency, and the problems of wear and fracture during the crushing process, the purpose of the present invention is to provide a high-chromium cast iron-based ZTA ceramic composite impact crusher The machine blow bar and its manufacturing method, using two kinds of materials to make one part idea, make the hammer body part of the crusher blow bar have high strength and comprehensive mechanical properties, and the blow bar head part have high hardness and high wear resistance

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