Friction Welding of Sintered Steel and Carbon Steel

A. Hasui, Lian Der-Ming, Y. Nishino, T. Kono
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引用次数: 3

Abstract

The friction weldability of sintered high carbon-high chromium steel (PM) and S25C steel was investigated. The welded joint of the as-received PM and S25C steel, the quench-tempered joint after welding and the welded joint of the quench-tempered PM and the as-received S25C steel were made. They were labelled A, B and C joints. A continuous drive type friction welding machine was used. Welding was carried out in the range of the following conditions.Rotational speed: 2440 rpm, Friction pressure: 6.0, 8.0 Kgf/mm2, Upsetting pressure: 10.0, 14.0 Kgf/mm2, Friction time: 3.0, 5.0 s, Upsetting time: 10.0 s.Results of this study are summarized as follows:(1) The A joint are broken in the PM base metal or at the weld in tensile test. As the tensile strength of the as-received PM base metal itself is low, the joint is unsuited for practical use.(2) The C joints are broken at the weld interface or in the heat-affected zone of PM base metal in tensile test. The joint imperfection at the weld interface and the imperfection of joint between powder particles are the causes of fracture in each case.(3) The B joints are broken in the base metal in tensile test and have sufficient strength.(4) The B joint is superior to the quench-tempered PM base metal in bending ductility, impact value and fatigue limit.
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烧结钢与碳钢的摩擦焊接
研究了烧结高碳高铬钢(PM)与S25C钢的摩擦焊接性能。制作了回火PM与S25C钢的焊接接头、焊接后的回火接头以及回火PM与S25C钢的焊接接头。它们被标记为A, B和C关节。采用连续驱动式摩擦焊机。焊接在以下条件范围内进行。转速:2440转,摩擦压力:6.0、8.0 Kgf/mm2,镦粗压力:10.0、14.0 Kgf/mm2,摩擦时间:3.0、5.0 s,镦粗时间:10.0 s。研究结果如下:(1)拉伸试验中,在PM母材或焊缝处出现A接头断裂。由于收到的PM母材本身抗拉强度较低,不适合实际使用。(2)C型接头在拉伸试验中在焊缝界面或PM母材热影响区断裂。(3) B接头在拉伸试验中在母材中断裂,具有足够的强度;(4)B接头在弯曲延展性、冲击值和疲劳极限上均优于调质PM母材。
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