The effects of low temperature chemical heat treatment and high energy density surface treatment on H13 steel surface properties and its die lifespan.
研究了低温化学热处理、高能束流表面处理等对H1 3钢表面性能及其模具寿命的影响。
The selection of chemical composition of ferrite nodular iron used under low temperature, the control plan of nodularization, inoculation technology and heat treatment technique were studied.
研究了低温用铁素体球铁化学成分的选择、球化及孕育工艺的控制以及热处理方案的制定原则，从而确定了低温用铁素体球铁的合理生产方案。
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