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    Method of flash butt welding high-carbon material, in particular nodular cast iron
    1.
    发明授权
    Method of flash butt welding high-carbon material, in particular nodular cast iron 失效
    闪点焊接高碳材料的特殊方法

    公开(公告)号：US5091624A

    公开(公告)日：1992-02-25

    申请号：US411723

    申请日：1989-09-25

    申请人： Anton Alt ,  Peter Toelke ,  Ludwig Wilhelm ,  Urban Zimmermann

    发明人： Anton Alt ,  Peter Toelke ,  Ludwig Wilhelm ,  Urban Zimmermann

    IPC分类号： B23K11/04 ,  B23K11/16 ,  C22C37/04

    CPC分类号： B23K11/04 ,  B23K2203/06

    摘要： A method of flash butt welding high-carbon materials, in particular nodular cast iron wherein the arcing craters produced by intermitting contact of the contact faces have a maximum roughness depth R.sub.T such that this roughness depth lies within the narrowest thickness of the plasticized zone. As a result, when the upsetting pressure is applied, the entire molten material areas on the contact faces are pressed out of the contact faces into the welding bead thereby prohibiting the creation of hardening structures, such as, for example, ledeburite in the welding zone. The method is especially suitable for flash butt welding workpieces having wall thicknesses of over 12 mm.

    摘要翻译： 一种闪光对焊高碳材料，特别是球墨铸铁的方法，其中通过接触面的接触产生的电弧弧形凹坑具有最大粗糙度深度RT，使得该粗糙度深度位于塑化区域的最窄厚度内。 结果，当施加镦锻压力时，接触面上的整个熔融材料区域从接触面压出到焊接珠中，从而阻止了在焊接区域中产生诸如例如莱氏体的硬化结构 。 该方法特别适用于壁厚超过12mm的闪光对焊工件。

    Magnesium-treated, decarburizingly-annealed cast iron material
    2.
    发明授权
    Magnesium-treated, decarburizingly-annealed cast iron material 失效
    镁处理，脱碳退火铸铁材料

    公开(公告)号：US4900375A

    公开(公告)日：1990-02-13

    申请号：US94705

    申请日：1987-09-09

    申请人： Anton Alt ,  Guenter Schulte ,  Peter Toelke ,  Ludwig Wilhelm

    发明人： Anton Alt ,  Guenter Schulte ,  Peter Toelke ,  Ludwig Wilhelm

    IPC分类号： C21D5/00 ,  C21C1/10 ,  C21D1/26 ,  C21D5/08 ,  C22C37/00 ,  C22C37/04

    CPC分类号： C22C37/00 ,  C21C1/10 ,  C21D5/08 ,  Y10S148/901

    摘要： A magnesium-treated, decarburizingly-annealed cast iron material includes 4% or less carbon by weight, 2% or less silicon by weight, at least 0.010% magnesium by weight, and at least 0.001% sulphur by weight, the remainder being iron. The cast iron material is subjected to a first annealing phase in which graphitic carbon portions are formed. Thereafter, the cast iron material undergoes a second annealing phase during which certain of the graphitic carbon portions are burned out. The resultant structure includes cavities in place of certain of the graphitic carbon portions in a substantially ferritic matrix. The resultant cast iron material exhibits good welding and cutting properties with little susceptibility to hard cracking.

    摘要翻译： 经镁处理脱碳退火的铸铁材料包括4重量％或更少的碳重量，2重量％或更少的硅，至少0.010重量％的镁和至少0.001重量％的硫，其余为铁。 对铸铁材料进行形成石墨碳部分的第一退火阶段。 此后，铸铁材料经历第二退火阶段，在该阶段某些石墨碳部分被烧掉。 所得到的结构包括代替基本上铁素体基质中某些石墨碳部分的空腔。 所得到的铸铁材料具有良好的焊接和切割性能，对硬开裂几乎没有敏感性。