-
1.发明公开
公开(公告)号：EP2656942A4
公开(公告)日：2017-07-26
申请号：EP11851026
申请日：2011-12-19
申请人： SHOWA DENKO KK
发明人： NATSUI MASAYUKI
CPC分类号： B21D22/02 , B21C23/186 , B21K1/18 , B21K21/06 , C22F1/04 , F16D2125/06 , F16D2200/003
摘要： A punch 1 includes a forming land portion 2 formed in parallel with a punch axis 7, a forming R-portion 3 having an arc-shaped cross-section and formed continuously with the forming land portion 2 on a tip end side with respect to the forming land portion 2, and a recess portion 5 formed on a base end side with respect to the forming land portion 2 and having a diameter smaller than a diameter of the forming land portion 2. A Rockwell hardness HRF of the blank 20 is within a range of 65 to 105. The curvature radius R of the forming R-portion 3 of the punch 1 is set to be larger than the thickness L of a cylindrical peripheral wall portion 21 of the forged product 25. The length B of the forming land portion 2 of the punch 1 is set within a range of 0.05 to 0.15 mm. The recess width C of the recess portion 5 with respect to the forming land portion 2 of the punch 1 is set within a range of 0.15 to 1.0 mm.
摘要翻译： 冲头1包括：与冲头轴线7平行地形成的成形着地部2;与成形着地部2相比，在前端侧连续地形成有截面呈圆弧状的成形R部3 形成台肩部2和相对于成形台肩部2形成在基端侧并且直径小于成形台肩部2的直径的凹部5.洛氏硬度HRF是在 范围为65至105.冲头1的成形R部分3的曲率半径R被设定为大于锻造产品25的圆柱形周壁部分21的厚度L.成形区域的长度B 冲头1的部分2设定在0.05至0.15mm的范围内。 凹部5相对于冲头1的成型凸台部2的凹部宽度C设定在0.15〜1.0mm的范围内。
-
2.发明公开CLOSED FORGING METOD, FORGING PRODUCTION SYSTEM USING THE METHOD, FORGING DIE USED IN THE METHOD AND SYSTEM, AND PREFORM OR YOKE PRODUCED BY THE METHOD AND SYSTEM 有权封闭式冷锻过程，这个过程中使用的锻造生产系统，方法和系统二手锻造，并通过该方法和系统生成的（S）VORFOM OR YOKE
公开(公告)号：EP1372884A4
公开(公告)日：2005-03-30
申请号：EP02707250
申请日：2002-03-29
申请人： SHOWA DENKO KK
发明人： NATSUI MASAYUKI , NAKAHARA TAKAFUMI
摘要： A closed forging method for producing a forged product includes preparing as a forging material a cylindrical cast ingot that has a volume the same as the volume of a forged product and assumes a shape having an upper surface, a lower surface and a side surface and containing no angular portion; and applying pressure to the side surface of the forging material. The shape has a ratio of the lateral length of a projection profile of the forging material as viewed in the direction perpendicular to the direction of pressure application to a length of the forging material as measured in the direction of pressure application is 1 or less. The forged product obtained is a preform of an upper arm or a lower arm with a plurality of branches that is a suspension part for a vehicle or a yoke with a plurality of branches that is a joint part employed in a vehicle suspension. The preform or yoke has metal flow lines along each branch and exhibits enhanced mechanical strength.
-
搜索结果
2 条记录 (耗时 0.01 秒)
