METHOD OF WORKING THE CARBON AND LOW-ALLOY STEELS OUTSIDE THE FURNACE

文件类型：PDF文档
文件大小：231K
1. The method of working the carbon and low-alloy steels outside the furnace, which includes the scavenging of fusion by argon and introduction in the fusion of the powder wire, which consists besides the shell and the modifying filler, which contains calcium, silicon, rare-earth metals and gland, that is characterized by the fact that the modifying filler additionally contains barium with the following relationship of components, [mas].% : calcium - 5÷30, barium - 5÷25, rare-earth metals - 2÷20, silicon - 10÷60, iron - rest, moreover rare-earth metals are located in the form master alloys with iron and/or with silicon and iron, relation before the filler of a total quantity of calcium and barium to the rare-earth metals comprises not less than 0, 8, but the expenditure of the modifying filler is 0, 5-6 kg/t of [rasplava].2. Method on [p].1, which is characterized by the fact that before the introduction beside the fusion of powder wire with the modifying filler beside the fusion the powder wire with the filler for the preliminary working, which contain, [mas].%, additionally is introduced : calcium - 10÷40, barium - 0, 01÷25, silicon - 10÷60, iron - rest, the expenditure of filler for the preliminary working being 0, 5-6 kg/t of [rasplava].3. Method on [p].1, which is characterized by the fact that before the introduction beside the fusion of powder wire with the modifying filler beside the fusion the powder wire with the filler for the preliminary working, which contain, [mas].%, additionally is introduced : calcium - 10÷40, silicon - 10÷60, iron - rest, the expenditure of filler for the preliminary working being 0, 5-6 kg/t of [rasplava].4. Method on [p].1, which is characterized by the fact that barium before the composition of the modifying filler is located in the form alloy with silicon, calcium and