METHOD OF MANUFACTURE OF CHAIN BY GASIFIED MODEL CASTING Russian patent published in 2006 - IPC B22C9/30 

FIELD: manufacture of freely connected parts such as chains.

SUBSTANCE: first separate links of chains are cast together. Model unit on which gasified models are arranged vertically and in fan-shaped pattern around central pouring gate is set in place. Each pair of chain link model is set an angle ±β relative to radial plane of casting box-container. Then links cast preliminarily are placed in model unit at two or more levels. Each level of links is laid at alternation of angles +α and -α relative to plane of casting box-container. After filling casting box with sand, chain is cast.

EFFECT: low cost of equipment; reduced mass of casting box; reduced amount of sand; enhanced yield of good articles; reduction of expenses by 5 to 11%.

4 dwg