公开(公告)号：US06316129B1

公开(公告)日：2001-11-13

申请号：US09275003

申请日：1999-03-24

申请人： Isao Seki ,  Shigeo Hama ,  Shigehiro Tanike ,  Fukashi Watanabe ,  Masahiko Kakizaki ,  Shinji Seki

发明人： Isao Seki ,  Shigeo Hama ,  Shigehiro Tanike ,  Fukashi Watanabe ,  Masahiko Kakizaki ,  Shinji Seki

IPC分类号： H05K504

CPC分类号： B21K23/00 ,  B21J5/02 ,  B21K21/02 ,  H05K5/02 ,  Y10T428/12361 ,  Y10T428/12375 ,  Y10T428/12382 ,  Y10T428/12389 ,  Y10T428/12993 ,  Y10T428/31681

摘要： A thin, forged magnesium alloy casing is integrally constituted by a thin plate with projections on either or both surfaces, and the thin plate is as thin as about 1.5 mm or less. The thin forged casing can be produced by (a) carrying out a first forging step for roughly forging a magnesium alloy plate to form an intermediate forged product under the conditions of a preheating temperature of the magnesium alloy plate of 350-500° C., a die temperature of 350-450° C., a compression pressure of 3-30 tons/cm2, a compressing speed of 10‥500 mm/sec. and a compression ratio of 75% or less; and (b) carrying out a second forging step for precisely forging the intermediate forged product under the conditions of a preheating temperature of the intermediate forged product of 300-500° C., a die temperature of 300-400° C., a compression pressure of 1-20 tons/cm2, a compressing speed of 1-200 mm/sec., and a compression ratio of 30% or less.

摘要翻译： 薄的锻造的镁合金外壳由在一个或两个表面上具有突起的薄板一体地构成，并且薄板薄至约1.5mm或更小。 可以通过（a）在镁合金板的预热温度为350〜500℃的条件下，进行大致锻造镁合金板以形成中间锻造品的第一锻造工序来制造薄型锻造套管， 模具温度为350-450℃，压缩压力为3-30吨/厘米2，压缩速度为10‥500毫米/秒。 压缩比为75％以下; 和（b）进行第二锻造工序，在中间锻造品的预热温度为300〜500℃，模具温度为300〜400℃的条件下精密锻造中间锻造品，压缩 压力为1-20吨/ cm2，压缩速度为1-200mm / sec，压缩比为30％以下。