Title:
CAST WEAR-RESISTANT HOLLOW BALL
Document Type and Number:
Japanese Patent JP3032489
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a crushing hollow ball formed on a hollow ceramic core and to furnish its casting method.
SOLUTION: A metallic hollow ball 10 is cast around a hollow ceramic core 12 not generating gas in the casting stage. The core 12 is held in the center in the cast ball 10 when cast with a ceramic solid supporting member 14. Since the core 12 is made of the inert refractory not generating gas when a liq. metal is poured into a die and solidified to cast the ball main body, either an opening or a hole is not provided in the supporting member 14.
More Like This:
| JPH01105892 | WINDOW OPENING/CLOSING MECHANISM |
Inventors:
Brian hand
Application Number:
JP23639597A
Publication Date:
April 17, 2000
Filing Date:
July 30, 1997
Export Citation:
Assignee:
The Babcock&Wilcox Company
International Classes:
E05F15/10; B02C15/00; B02C15/12; B02C17/20; B22D19/06; B22D25/02; B60J1/00; B60J7/057; (IPC1-7): B02C17/20
Domestic Patent References:
| JP8224490A | ||||
| JP6121747A | ||||
| JP6386846U |
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)