IMPORT SUBSTITUTION OF WORKING UNITS FOR MULCHERS

In the current conditions, there is a multifaceted urgent problem of meeting growing demand agriculture for modern and high-quality equipment. Mulchers tractors, excavators skid steer loaders are becoming more popular as type attachment. Carbide cutting elements mulcher have high resource, do not require sharpening, afraid small stones in soil. An task terms import substitution organization their production at domestic engineering enterprises, which requires information on materials used manufacturing. The purpose study to details working bodies foreign-made mulchers identify analogues industrial Russian Federation. Hardness base 431…710 HRC; cleaner - 221; carbide plate 1068 ... 1073; crown 1062 1076, tool holder 51 HRC. For mulchers, structural can be used. made steel castings ordinary grades 40KhL or 35GL GOST 977-88. manufacture scraper, chromium grade 40X manganese suitable. Parts should subjected heat treatment consisting quenching low stress relief tempering. hard-alloy cutters, it advisable use tungsten sintered alloys VK8 VK10. Hard alloy soldered with solder LNMts 49-9-0.2, MNMts 55-6-4 9-23.5, provide strength steel-hard joints 350 450 MPa. It weld scraper follows. First, root welds welded Sv-08G2S solid section welding wire by semi-automatic gas welding. Then joint surface hardened Kiswel K-700HT WELTEK-H565 flux-cored This technology provides hardness 54…60