发明名称 |
MEJORAS EN METODO Y APARATO PARA PREFORMAR BORDES LARG EN UNA PLACA PLANA DE ACERO,DESTINADOS A CONFORMARSE,PRENSARSE Y SOLDARSE A UN TUBO DE DIAMETRO ESPECIFICO |
摘要 |
Method and means for preforming the long edges of steel plate prior to manufacture into pipe by the U-O Process or the like by utilizing plate of a width exceeding that required for pipe of a given diameter by an amount at each edge having an excess at least equal to the width of the pipe. Roll-forming the plate to use the excess width thereof as a lever arm to obtain a bend at the bitter edges of the pipe (edges required for pipe) of a radius required for the pipe and thereafter shearing the plate to form the bitter edges, followed by bevelling and polishing the bitter edges, and further roll-forming the edge area to complete the preform thereof. |
申请公布号 |
MX156782(A) |
申请公布日期 |
1988.10.03 |
申请号 |
MX19810187853 |
申请日期 |
1981.06.17 |
申请人 |
KAISER STEEL CORPORATION |
发明人 |
CALVIN C. WILLIAMSON |
分类号 |
B21D19/12;B21B1/00;B21C37/083;B21D5/08;B21D5/10;B21D19/00 |
主分类号 |
B21D19/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|