| 摘要 |
PROBLEM TO BE SOLVED: To form a cage superior in corrosion resistance out of an inexpensive steel plate raw material superior in press workability. SOLUTION: The cage 4 superior in the corrosion resistance can be formed of the inexpensive steel plate raw material superior in the press workability by forming the steel plate raw material for forming the case 4 by press working as a hot dipping steel plate having a plating layer A of a Zn(6%)-Al(3%)-Mg alloy. COPYRIGHT: (C)2007,JPO&INPIT
|
