Claims
- 1. An improved segregation-resistant and dust-resistant metallurgical composition containing alloying powder bound to iron-based powder for making compacted parts, comprising:(a) at least about 80 percent by weight of iron-based powder; (b) at least one alloying powder; and (c) about 0.05 to about 2 percent by weight of a binding agent for adhering the alloying powder to the iron-based powder, wherein the binding agent comprises polyethylene having a weight average molecular weight below about 4000, epoxy, paraffin wax, cotton seed wax, solid hydrogenated vegetable oils, or combinations thereof.
- 2. The metallurgical composition of claim 1 wherein the binding agent comprises polyethylene having a weight average molecular weight of about 2000 or below.
- 3. The metallurgical composition of claim 1 wherein the binding agent comprises epoxy.
- 4. The metallurgical composition of claim 1 wherein the binding agent comprises paraffin wax.
- 5. The metallurgical composition of claim 1 wherein the binding agent comprises cotton seed wax.
- 6. The metallurgical composition of claim 1 wherein the binding agent comprises solid hydrogenated vegetable oils.
- 7. An improved segregation-resistant and dust-resistant metallurgical composition containing alloying powder bound to iron-based powder for making compacted parts, comprising:(a) at least about 80 percent by weight of iron-based powder; (b) at least one alloying powder; and (c) 0.25 to 2 percent by weight of a binding agent for adhering the alloying powder to the iron-based powder, wherein the binding agent comprises polyethylene, epoxy, paraffin wax, cotton seed wax, solid hydrogenated vegetable oils, or combinations thereof.
- 8. An improved segregation-resistant and dust-resistant metallurgical composition containing alloying powder bound to iron-based powder for making compacted parts, comprising:(a) at least about 80 percent by weight of iron-based powder; (b) at least one alloying powder; and (c) about 0.05 to about 2 percent by weight of a solid polyolefin binding agent for adhering the alloying powder to the iron-based powder, wherein the polyolefin binding agent has a weight average molecular weight of below 3,000.
Parent Case Info
This application is a divisional of Ser. No. 09/425,599 filed Oct. 22, 1999 now U.S. Pat. No. 6,280,683, which is a continuation in part of application Ser. No. 08/955,382, filed on Oct. 21, 1997, now abandoned.
US Referenced Citations (56)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1-294783 |
Nov 1989 |
JP |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
08/955382 |
Oct 1997 |
US |
Child |
09/425599 |
|
US |