Method for making machinable lead-free copper alloys with additi

Details Method for making machinable lead-free copper alloys with additi Method for making machinable lead-free copper alloys with additi

1995-06-21

1997-03-25

Ip, Sikyin

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

148553, 148 24, C21D 109

Patent

active

056140380

ABSTRACT:
Machinable lead free brasses for potable water applications are provided wherein a combination of bismuth and selenium are substituted in the alloy for lead and the bismuth and selenium are added to the alloy in the form of an additive product comprising bismuth selenide. A method of making the brasses which meets environmental and safety regulations is also provided. The bismuth selenide is preferably made by sintering particles of bismuth and selenium in a Bi/Se weight ratio of about 1.8 or greater and fusing the sinter.

REFERENCES:
patent: 3414405 (1968-12-01), Fisher
patent: 4077108 (1978-03-01), Mathern et al.
patent: 4879094 (1989-11-01), Rushton
patent: 5137685 (1992-08-01), McDevitt et al.
patent: 5167726 (1992-12-01), Lolacono et al.
patent: 5330712 (1994-07-01), Singh
patent: 5360591 (1994-11-01), Ruetz et al.
Diagram redrawn from Sher., A.A.; Odin, I.P.: and Novoselova, A.V. "Investigation of the Phases in the Bi-Se System", Russ, J. Inorg. Chem; 31(3), 1986, pp. 435-437.
Encyclopedia of Chemical Technology, J. Wiley & Sons, 3rd Edition, vol. 20, 1982, pp. 589 and 595.
R.A. Zignaro & W.C. Cooper, Selenium, Van Nostrand Reinhold Co., New York, 1975, pp. 773, 775-777, 779 and 785.

Affiliated with

Also associated with

Rating

Method for making machinable lead-free copper alloys with additi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making machinable lead-free copper alloys with additi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making machinable lead-free copper alloys with additi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2200289