Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
Scraper conveyor scraper adopts alloy steel forging scraper, scraper and chain by beam and bolt with a locknut connected together, forging scraper mechanical performance is good, wear resistance, long service life and other advantages, however, the fracture, not wear resistance occurs from time to time, today from 2 points to explore the reasons.
First, the material. The scraper material of the scraper conveyor is divided into 27SiMn and 40Cr for the main engine of 630 to 800, and 40Mn2 for the main engine of above 900. The material determines the basic performance of wear resistance.
Secondly, heat treatment and tempering. Scraper conveyor scraper heat treatment hardness to achieve HB280-320, product processing and is put into the box type heat treatment furnace, the temperature to 900-930 degrees warm after 2-3 hours, heat preservation after rapid cooling in the water/oil, test whether qualified hardness, if does not meet standards for tempering hardness, the tempering temperature is 500-650 degrees (adjust the tempering temperature according to the hardness).
Henan Shuangzhi coal parts production experience for many years, the production of various types of scraper, welcome the intention of cooperation with customers, call consulting.
