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一等离子弧加热淬火表面硬化技术低温(2—2.5×10~4K 以下)的等离子弧加热淬火表面硬化技术是一种有发展前途,但是还没有充分研究的表面硬化方法。苏联等曾研究等离子弧淬火对(?)15 C(?)、Y10 A、30 X(?)CA 钢的某些物理性能、力学性能和使用性能之影响。所有淬火机床是由连续焊接装置的部件组成的,并带有改进的等离子喷咀、喷咀移动机构及零件旋转机构。采用氩气和氮气作为形成等离子体的气体。等离子加热后不用专门冷却装置只是依靠热量向金属深处传递来进行冷却,等离子弧加热淬火可在工件表面形成一条宽5—6mm 的硬化带,硬化带宽度主要取决于喷咀出口处的直径;淬火带
A plasma arc heating hardening surface hardening technology Low temperature (2-2.5 × 10 ~ 4K below) plasma arc hardening surface hardening technology is a promising, but not sufficiently studied surface hardening method. The Soviet Union et al. Studied the effect of plasma arc quenching on some physical, mechanical, and service properties of (?) 15 C (?), Y10A, 30X (?) CA steels. All hardened machine tools are composed of continuous welding unit components, with improved plasma nozzle, nozzle moving mechanism and parts rotating mechanism. Argon and nitrogen are used as the plasma-forming gas. Plasma heating without special cooling device is relying on heat transfer to the metal deep to cool, plasma arc hardening can be hardened in the workpiece surface with a width of 5-6mm, the width of the hardened tape depends on the nozzle exit diameter; Hardened zone