Robert W Foreman

US Patent:

48265454, May 2, 1989

Filed:

Jun 2, 1987

Appl. No.:

7/058614

Inventors:

Robert W. Foreman - Bloomfield Hills MI
Anthony G. Meszaros - Windsor, Ontario, CA

International Classification:

C21D 148

US Classification:

148 18

Abstract:

A method of quenching metal components utilizing a water based quenching composition which includes a polyvinylpyrrolidone polymer of high molecular weight and in relatively high concentrations and thereafter power washing the parts to remove the polymeric film. Another preferred embodiment uses the same high molecular weight polyvinylpyrrolidone in combination with two rust inhibiting agents which greatly extend the time during which the quenchant film left on the quenched parts remains water soluble, while still providing an excellent approximation of the cooling curve characteristic of an oil quenchant.

US Patent:

RE341193, Nov 3, 1992

Filed:

Jan 23, 1989

Appl. No.:

7/302306

Inventors:

Robert W. Foreman - Bloomfield Hills MI
Anthony G. Meszaros - Windsor, CA

Assignee:

Park Chemical Company - Detroit MI

International Classification:

C21D 148

US Classification:

148638

Abstract:

A method of quenching metal components utilizing a water based quenching composition which includes a polyvinylpyrrolidone polymer of high molecular weight and in relatively high concentrations and thereafter power washing the parts to remove the polymeric film. Another preferred embodiment uses the same high molecular weight polyvinylpyrrolidone in combination with two rust inhibiting agents which greatly extend the time during which the quenchant film left on the quenched parts remains water soluable, while still providing an excellent approximation of the cooling curve characteristic of an oil quenchant.

US Patent:

41497023, Apr 17, 1979

Filed:

Jul 25, 1977

Appl. No.:

5/818382

Inventors:

Robert W. Foreman - Bloomfield Hills MI
Gajen P. Dubal - Sterling Heights MI

Assignee:

Park Chemical Company - Detroit MI

International Classification:

C21D 146

US Classification:

266114

Abstract:

A system for recycling heat treating salts such as nitrates and nitrites from a rinse bath including means to prevent the excessive build-up of impurities such as carbonates which impair heat treat efficiency. For example, carbonates which form in a nitrate-nitrite quench bath are removed by concentrating the rinse water, rectifying the concentrate and returning molten rectified salt to the quench.

US Patent:

49044230, Feb 27, 1990

Filed:

Oct 30, 1984

Appl. No.:

6/666493

Inventors:

Robert W. Foreman - Bloomfield Hills MI
Michael T. Ives - Romulus MI

Assignee:

Park Chemical Company - Detroit MI

International Classification:

B29C 3352
B29C 3354

US Classification:

264 25

Abstract:

A process for pressure molding an article around a hardened salt mold core made from a mixture of relatively low melting temperature salt and sand wherein the core is removed from the finished article by immersion of the article containing the core into a molten bath mixture of the core material thereby to melt the core out of the article, recover the core material, and thus replenish the bath for use in making additional cores. The bath is originally constituted by melting a suitable quantity of a dry premix of the salt and sand.

US Patent:

40091120, Feb 22, 1977

Filed:

Sep 5, 1975

Appl. No.:

5/610619

Inventors:

Robert W. Foreman - Bloomfield Hills MI

Assignee:

Park Chemical Co. - Detroit MI

International Classification:

C09K 300
C21D 100

US Classification:

252 71

Abstract:

Addition of special thermally decomposable chloro compounds intimately mixed and pelleted or briquetted with a neutral binder material is made to molten neutral salt baths to restore neutrality by converting oxides of the alkali/alkaline earth metals back to chlorides and dispelling the remainder of the compound as a vapor.

US Patent:

41534816, May 8, 1979

Filed:

Jul 5, 1977

Appl. No.:

5/812758

Inventors:

Robert W. Foreman - Bloomfield Hills MI
Gajen P. Dubal - Sterling Heights MI
Charles R. Fox - Livonia MI

Assignee:

Park Chemical Company - Detroit MI

International Classification:

C21D 148

US Classification:

148 155

Abstract:

A cyanide-free molten salt carburizing process and composition comprising an alkali metal salt bath having a cover of finely divided graphite particles in a size range of about 100 mesh to about 300 mesh. The bath is operated in the temperature range of about 1550. degree. F. to 1900. degree. F. and is provided with mechanical agitation to produce entrainment of air through the surface cover and sufficient mobility of carbon monoxide coated graphite particles to produce carbon diffusion by contact into the surface of the parts immersed in the bath. Total graphite content is between about 11/2% to about 7% of the active portion of the bath. The graphite is preferably of the synthetic type so as to produce an ash content below about 1%.

US Patent:

46473181, Mar 3, 1987

Filed:

Oct 3, 1985

Appl. No.:

6/783611

Inventors:

Robert W. Foreman - Bloomfield Hills MI

International Classification:

C22F 104

US Classification:

148 20

Abstract:

A method of solution heat treating aluminum alloys, especially aluminum-lithium alloys, by immersing the alloy article in a chloride based neutral salt bath rather than in the conventionally used nitrate based salt bath. A chloride based bath, at least in certain controlled situations, produces an effective solution heat treatment but without the staining and corrosive reaction often encountered with the nitrate based salt baths. A chloride based salt comprising 55% potassium chloride, 40% lithium chloride, and 5% sodium chloride is found to be particularly effective.

US Patent:

47387319, Apr 19, 1988

Filed:

Oct 6, 1986

Appl. No.:

6/915427

Inventors:

Robert W. Foreman - Bloomfield Hills MI
Anthony G. Meszaros - Windsor, CA

Assignee:

Park Chemical Company - Detroit MI

International Classification:

C21D 148

US Classification:

148 18

Abstract:

A method of quenching metal components utilizing a water based quenching composition which includes a polyvinylpyrrolidone polymer of high molecular weight and in relatively high concentrations and thereafter power washing the parts to remove the polymeric film. Another preferred embodiment uses the same high molecular weight polyvinylpyrrolidone in combination with two rust inhibiting agents which greatly extend the time during which the quenchant film left on the quenched parts remains water soluable, while still providing an excellent approximation of the cooling curve characteristic of an oil quenchant.