| 简介 |
PROBLEM TO BE SOLVED : To provide a forward extrusion forging device which can manufacture a rare earth magnet excellent in a magnetic property without causing a rise of a manufacturing cost due to a simple shape of a hollow part of a die, and a forward extrusion forging method.
SOLUTION : A die 1 constituting a forward extrusion forging device 10 is formed of a first region 2 in which a punch 6 slides, a bent part 3, and a second region 4. The punch 6 slides in the first region 2, and a work W is extruded to the second region 4, and forged. Shapes of the first region 2 and the second region 4 which are orthogonal to each other in an extrusion direction are rectangular, and when two sides constituting a rectangular cross section of the first region 2 are set as a first side 2a (length t1) and a second side 2b (length t2), and a side corresponding to the first side 2a out of the two sides constituting a rectangular cross section of the second region 4 is set as a third side 4a (length t3), and when a side corresponding to the second side 2b is set as a fourth side 4b (length t4), at least either of t3>t1 and t4>t2 is satisfied.
COPYRIGHT : (C)2015, JPO&INPIT |
客服热线：
手机版
二维码
