The Research Of 45 Steel Surfaces WC/high Carbon Chrome Iron Alloy Technology

This article in view of the ball mill lining working in bad condition, the resistance to wear and bears flushes the eclipse request high, and use broadly, the batch is big, requests a better efficiency, according to the principle of "cost low, the performance is good", namely obtains the best practical craft plan through the experiment, then analyzes its operational performance and the microscopic organization. Begins from the superficial alloy basic principle, inspect influence factors to 45 steel surfaces WC/ the high carbon Cr . In the choice of material aspect, carries on aspect the and so on performance, price to several kind of related materials comparison, finally determined selects ZG45 to take the substrate, WC and the high carbon ferrochrome takes the enhancement. This topic experiment approximately divides into following several steps to carry on:First, has made the introduction to the metal surface alloy research present situation, key to summarize to the research of the cast infiltrate technology, summarized the present surface alloy technology achievement and the insufficiency, and forecast this technical development tendency, proposed the research topic.Next, use two methods "cut in line the law" and "coating" to conduct the research to 45 steel bases surface alloy, through the change experimental parameter such as pouring temperature, cementing agent, bake temperature and so on, obtained the different result; By the two methods, study on their craft parameters influence to the infiltrate layer, and obtains the reasonable craft parameter to the test result comparison, Take the borax as the cementing agent and the melting agent, W and the high carbon ferrochrome for strengthens the pellet , In 1,650°C carries on the experiment, may obtain a quality better compound layer.Once more, to cast infiltrates the level organization, the structure, the performance has conducted the research. Carries on the organization appearance observation through the scanning electricity mirror to the obtained test specimen, finally discovered, the substrate material and the enhancement body already formed the metallurgy union, strengthened the body pellet and the substrate mutually interlocks, irregular, the entire appearance approximately might divide into three, namely inner layer, intermediate deck and outer layer. The union power spectrum analysis may know, from the substrate to the outer layer, WC and the chromium content is gradually increases. This further explained between enhancement body and substrate inter diffusion, forms the metallurgy union but is not the simple mechanical bond.Finally, use "coating" to carry on the experiment to the ball mill, the test result indicated that, the obtained lining board superficial alloy quality is good, not obvious casting defect. This indicated this topic research has the practical value.