Injection pump for injecting molten metal

Details Injection pump for injecting molten metal Injection pump for injecting molten metal

1975-06-12

1977-06-14

Douglas, Winston A.

Expansible chamber devices

Cylinder detail

Nonmetallic piston contacting portion

92248, 106 43, 106 733, 106 57, F01B 1102, C04B 3556, C04B 3558

Patent

active

040290000

ABSTRACT:
The cylinder and piston of an injection pump which are severely corroded by molten aluminum or the like are made of a composite sintered body containing two or more of the compounds selected from the group consisting of boron carbide, titanium diboride, zirconium diboride and boron nitride, and having excellent corrosion resistant, wear resistant and heat shock properties and high mechanical strength. One or more of the compounds selected from the group consisting of borides of tantalum, molybdenum and tungsten; carbides of silicon, zirconium, tantalum, vanadium,chromium, tungsten and molybdenum; nitrides of titanium, aluminum, silicon and zirconium; and oxides of aluminum and beryllium may be incorporated.

REFERENCES:
patent: R23789 (1954-02-01), Montgomery
patent: 2695628 (1954-11-01), Wheildon
patent: 3093087 (1963-06-01), Hansen
patent: 3165864 (1965-01-01), Shalze
patent: 3189477 (1965-06-01), Shaffer
patent: 3296002 (1967-01-01), Aau
patent: 3340077 (1967-09-01), Alper et al.
patent: 3340078 (1967-09-01), Alper et al.
patent: 3376247 (1968-04-01), Reddy et al.
patent: 3433471 (1969-03-01), Alper

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