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发明公开
CN102418044A 一种钢球用钢及制造该钢球的方法 有权

一种钢球用钢及制造该钢球的方法
摘要：
本发明公开了一种钢球用钢及制造该钢球的方法。所述制造钢球的方法包括步骤：冶炼钢水；采用炉外精炼工艺处理钢水，得到的钢水按重量百分比计由0.90％～1.00％的C、0.30％～1.00％的Si、0.80％～1.20％的Mn、0.40％～0.70％的Cr、0.01％～0.05％的Ti、不多于0.025％的P、不多于0.025％的S、不多于2.0ppm的[H]、余量的Fe和不可避免的杂质组成；浇铸；轧制；切割形成钢球坯；加热钢球坯，然后锻造；淬火，回火，随后进行空冷及精整处理，得到钢球。本发明的钢球抗磨损性能高，强韧性良好，在使用过程中不破圆、不失圆，使用寿命长。
摘要（英）：

The invention discloses steel for steel balls and a method for manufacturing the steel balls. The method for manufacturing the steel balls comprises the following steps: smelting molten steel; treating molten steel by using the process of out-of-furnace refining, wherein, obtained molten steel comprises, by weight, 0.90 to 1.00% of C, 0.30 to 1.00% of Si, 0.80 to 1.20% of Mn, 0.40 to 0.70% of Cr, 0.01 to 0.05% of Ti, no more than 0.025% of P, no more than 0.025% of S and no more than 2.0 ppm of [H], with the balance being Fe and unavoidable impurities; casting molten steel; rolling; carrying out cutting to obtain steel ball billets; heating the steel ball billets and carrying out forging; carrying out quenching, tempering, air cooling and finishing so as to obtain the steel balls. The steel balls provided in the invention have the advantages of high resistance to abrasion, good strength and toughness, no break-of-roundness and out-of-roundness during utilization and a long service life.

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