Study On Wear Resistance Of Tillage Stubble Machine Chopper With Flame Powder Spraying And Welding

With the development of economy, ecological environment and agriculture sustainable development consciousness improved, straw chopping and tillage stubble machine popularize further. What restrain it's developing speed is that the chopper is invalidated frequently affected the agriculture occasion, increased the work cost, to a certain extent restricted its popularization. So scientific research workers proceeded fruitful research to the chopper, include its invalid mechanism, movement way, arrange way, and type design. Furthermore, in material choosing, it is gradually progress, too.Thermal spraying technology can make the material surface strengthened, and give the special performance on the foundation of not increasing cost. So thermal spraying technology develop at full speed , and is extensively apply to anti-corrosion, Wear-resisting and heat-resisting and so on. But the research on wear resistance of tillage stubble machine chopper is little at present, the effect of traditional strengthen craft become relatively limited already. To this question, the subject of Ni base self melting alloy powder add WC powder chopper strengthen is studied, based on the analysis of the tillage stubble machine chopper invalid mechanism, study oxygen acetylene flame powder spraying and welding strengthen craft influence to wearability, to establish the foundation in stubble machine chopper strengthen application.Analyzed strength receiving and failure forms of stubble machine chopper, considered that the blade and it' inclined plane of the chopper bear obstruction of soil different in size, and in function way. The blade and it' inclined plane of the chopper contain different main wearing mechanism and speed. Orthogonal test and multiple factor variance analysis were applied to study the influence of coating matching, preheat temperature, acetylene flow, from spraying that impact the strengthen quantity of the chopper, Optimize Ni base alloy + WC powder spraying and welding craft parameters. Adopt single factor variance analysis to study powder spraying + argon arc melting strengthen influence of quantity, the parameters: melt beginning temperature, pulse electric current, arc move speed, keep warm method were Optimized.