热喷涂中的涂层分类及用途分析（Classification and application analysis of coatings in thermal spraying）.doc

热喷涂中的涂层分类及用途分析（Classification and application analysis of coatings in thermal spraying） Classification and application analysis of coatings in thermal spraying The problem of high temperature oxidation, a lot of wear and corrosion resistance etc in the metallurgy industry, these problems are a work surface failure process, can and should be from the thermal spraying to seek an effective solution technique. The spraying process can not only repair the old workpiece which has failed, but also strengthen the pre protection before the new workpiece is put into operation, and can also be used by the two. 1, metallurgical industry production characteristics Metallurgical industry production from ore to metal materials, which in the course of mining, transportation, storage, crushing, grading, sorting, liquid solid separation, agglomeration, sintering, smelting, casting, refining and other multi-channel production links. The main equipment of each link is in the high wear, high load, high temperature and corrosion in extremely harsh conditions, these factors lead to failure of production equipment, the metallurgical industry of the national economy has become the major energy consuming supplies. Faced with this situation, in order to maintain production, a large number of spare parts must be consumed every year, some of which need to be imported. A large iron and steel enterprises, each year to pay hundreds of millions of yuan of funds. On the other hand, modern metallurgical production is a highly continuous process. Even if the equipment in each part of the production process fails prematurely, it will lead to shutdown or reduction of production and bring huge economic losses. For example, the slag mouth of a blast furnace in a steel enterprise in our country is very short of life because of the erosion of high temperature melt. Every time the blast furnace is replaced, the blast furnace needs less air pressure, three batches of furnace charge, and less iron 60t. The con