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随着矿山事业的发展,矿用大型自卸车、电铲、推土机等要求自重轻、吨位大、寿命长。对自卸车来说,翻斗用钢约占自卸车总重的1/3～2/3。因此减轻翻斗用钢的重量,提高其使用寿命已得到重视。目前世界先进国家的重型自卸车一般用6s≥70公斤/毫米~2的低合金高强度钢,日本小松已试用6s≥90公斤/毫米~2的低合金高强度钢,而我国当前制造及维修中大多采用 A_3、16Mn,少量采用15MnV 钢。普遍存在不耐磨及怕冲击,使用寿命短等缺点,
With the development of the mining industry, mining dumpers, shovels, bulldozers and other requirements of light weight, large tonnage, long life. For dump trucks, skip dump steel accounts for about one-third to two-thirds of the total weight of dump trucks. Therefore, reducing the weight of tipping steels and increasing their service life have been taken seriously. At present, the world’s most advanced heavy duty dump trucks generally use 6s ≥ 70 kg / mm ~ 2 low alloy high strength steel, Japan Komatsu has been tested 6s ≥ 90 kg / mm ~ 2 low alloy high strength steel, and our current manufacturing and maintenance Most use A_3, 16Mn, a small amount of 15MnV steel. Ubiquitous wear and fear of impact, short life and other shortcomings,