| 摘要 |
FIELD: metallurgy.SUBSTANCE: invention relates can be used for arc surfacing of equipment and tools operated at thermomechanical cyclic loading of, for example, the parts of copper teeming machines, hot forming machines, hot rolling rolls, etc. Powder wise consists of low-carbon steel shell made of Armco-iron and powder sharge. Proposed wire contains components in the following ratio in wt %: chromium - 15-18; molybdenum - 3-5.5; nickel - 2-6; manganese - 2-4; ferrosilicon - 0.8-2.5; ferrovanadium - 1.5-3.5; titanium - 0.5-1.0; aluminium - 0.5-1.0; boron carbide - 0.3-0.8; titanium diboride - 1.0-2.0; zirconium diboride - 0.5-1.5; sodium fluorosilicate - 0.5-1.0; iron powder - 0,5-7,5, steel shell making the rest. Surfacing by powder with above described charge can be performed in argon or by hidden arc welding.EFFECT: higher hardness and longer life of tools operated at thermomechanical cyclic loading.2 dwg, 2 tbl |
