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    • 68. 发明申请
    • STRESS-RELIEF HEAT TREATMENT APPARATUS
    • 应力消除热处理设备
    • US20150211087A1
    • 2015-07-30
    • US14421707
    • 2013-11-01
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Kenichi KarimineMasaharu Ueda
    • C21D9/04C21D1/42C21D1/30C21D9/50
    • C21D9/04B23K9/0026B23K23/00B23K31/00B23K31/022B23K2101/26C21D1/30C21D1/42C21D9/50Y02P10/253
    • A stress-relief heat treatment apparatus according to the present invention for stress-relief heat-treating a rail which is welded includes an induction heating coil, and the induction heating coil is arranged at a lateral lace of a web of the rail while being separated from a welding center of the rail by 20 mm to 300 mm in a longitudinal direction of the rail. The stress-relief heat treatment apparatus may include a plurality of the induction heating coils, and the induction heating coils may be arranged at both sides of the welding center. The stress-relief heat treatment apparatus may include a plurality of the induction heating coils, an axial direction of the induction heating coil may be vertical to a lateral surface of the rail and a plurality of the induction heating coils, of which distances from the welding center along the longitudinal direction of the rail are the same, may be arranged to cover a whole circumference of the rail while being separated from each other.
    • 根据本发明的用于焊接的钢轨的应力消除热处理的应力消除热处理装置包括感应加热线圈,并且感应加热线圈被布置在轨道的腹板的侧向花边处,同时被分离 从轨道的焊接中心沿轨道的纵向方向延伸20mm至300mm。 应力消除热处理装置可以包括多个感应加热线圈,并且感应加热线圈可以布置在焊接中心的两侧。 应力消除热处理装置可以包括多个感应加热线圈,感应加热线圈的轴向方向可以垂直于轨道的侧表面和多个感应加热线圈,其距离焊接的距离 沿着轨道的纵向的中心是相同的,可以被布置成在彼此分离的同时覆盖轨道的整个圆周。
    • 69. 发明授权
    • Method of manufacturing a welded component comprising a seamless bent pipe and seamless straight pipe sections
    • 焊接部件的制造方法,包括无缝弯管和无缝直管段
    • US08549751B2
    • 2013-10-08
    • US12561884
    • 2009-09-17
    • Tsutomu Arita
    • Tsutomu Arita
    • B21D41/02B21D7/03
    • B21C37/06B21D9/00B21D9/18B23K31/022B23K2101/10Y10T29/49391Y10T29/49428
    • Provided are a seamless bent pipe constituted by a bent section and straight pipe sections on both ends of the bent section, with the inside diameter at each pipe end portion being larger than the inside diameter of the bent section, and a welded component comprising a seamless bent pipe and a seamless straight pipe at one or each end of the seamless bent pipe, with the end of the seamless straight pipe to be welded to one or each end of the seamless bent pipe having the same inside diameter as the inside diameter of the seamless bent pipe, as well as methods of manufacturing them. As a result, elements suited for use in pipelines can be obtained, without unnecessarily increasing the wall thickness of the seamless bent pipe and without internal machining of the pipe end portions of the seamless bent pipe after the manufacturing thereof.
    • 提供一种由弯曲部分和弯曲部分两端的直管部分构成的无缝弯管,每个管端部的内径大于弯曲部分的内径,焊接部件包括无缝 弯曲管和无缝弯管的一端或两端的无缝直管,无缝直管的端部焊接到无缝弯管的一端或两端,内径与内径相同 无缝弯管,以及其制造方法。 结果,可以获得适用于管道的元件,而无需增加无缝弯管的壁厚,并且在其制造之后,无缝内弯曲管的管端部不进行内部加工。