公开(公告)号：US5419484A

公开(公告)日：1995-05-30

申请号：US48653

申请日：1993-04-19

申请人： Stefam R. Radulescu

发明人： Stefam R. Radulescu

IPC分类号： B23K23/00 ,  E01B11/52

CPC分类号： E01B11/52 ,  B23K23/00 ,  B23K2201/26

摘要： The disclosure relates to a multi-part mold for aluminothermic welding without preheating of metal parts, said mold having internally employed a welding cavity and two rising channels with variable cross-sections along their height, the central part of welding cavity being located below with respect to the lateral parts of welding cavity, said welding cavity having an increased moment of inertia of cross-section and an increased height from the lower side of base portion of welding cavity to the neutral axis of welding cavity, said rising channels extending from a region lower than said base portion, said welding cavity and said rising channels being connected together through two connecting ducts extending from the lower side of base portion to the head portion of welding cavity, the invention further relating to a process of reaching the metal parts by the liquid steel first underneath the lower side of base, a process of creating a liquid bath of constant height in an early stage of pouring operation and to a process of entirely eliminating of gases from said welding cavity, employing a weld with a ratio of the moment of fatigue of base by the moment of fatigue of head between 0.8 to 1.

摘要翻译： 本发明涉及一种用于不预热金属部件的铝热熔接的多部分模具，所述模具内部使用焊接腔和沿其高度具有可变横截面的两个上升通道，焊接腔的中心部分相对于 所述焊接腔具有增加的横截面惯性矩和从焊接腔的基部的下侧到焊接腔的中性轴线的增加的高度，所述上升通道从区域 低于所述基部，所述焊接腔和所述上升通道通过从基部的下侧延伸到焊接腔的头部的两个连接管连接在一起，本发明还涉及通过 首先在底部下侧的液态钢，是在早期形成恒定高度的液体浴的过程 浇注操作和完全消除来自所述焊接腔的气体的过程，使用具有基础疲劳力矩与头部疲劳时间在0.8至1之间的比率的焊缝。