Claims
- 1. A process for manufacturing a sucker rod having high corrosion resistance whose surface is coated by an alloy consisting essentially of a copper alloy comprising:cleaning the surface of a carbon steel sucker rod either alloyed or not, in order to remove oil contaminants; keeping said surface free of dust or other environmental pollutants; grit blasting said surface; and coating said surface by applying a copper alloy, wherein said copper alloy comprises 50 to 99.9% by weight of copper.
- 2. The process according to claim 1, wherein said cleaning procedure is carried out by heating the rod to a temperature of from 150 to 650° F. to remove oil and other combustible matter from the surface thereof.
- 3. The process according to claim 1, wherein said grit blasting procedure is carried out with sharp angle particles to provide a rough surface for the rod.
- 4. The process according to claim 1, wherein the coating procedure is carried out using an electric arc metal spray apparatus.
- 5. The process according to claim 1 wherein said copper alloy comprises 87 to 96% by weight of copper and 3 to 12% by weight of aluminum.
- 6. The process according to claim 2 wherein said copper alloy comprises 87 to 96% by weight of copper and 3 to 12% by weight of aluminum.
- 7. The process according to claim 3 wherein said copper alloy comprises 87 to 96% by weight of copper and 3 to 12% by weight of aluminum.
- 8. The process according to claim 2 wherein said copper alloy comprises 87 to 96% by weight of copper and 3 to 12% by weight of aluminum.
- 9. The process according to claim 1 wherein said copper alloy comprises 90% by weight of copper, 5% by weight of aluminum and 0.5% by weight of iron.
- 10. The process according to claim 2 wherein said copper alloy comprises 90% by weight of copper, 5% by weight of aluminum and 0.5% by weigh iron.
- 11. The process according to claim 3 wherein said copper alloy comprises 90% by weight of copper, 5% by weight of aluminum and 0.5% by weight of iron.
- 12. The process according to claim 4 wherein said copper alloy comprises 90% by weight of copper, 5% by weight of aluminum and 0.5% by weight of iron.
- 13. The process according to claim 1 wherein the thickness of the coating is between 0.05 mm and 0.5 mm.
- 14. The process according to claim 2 wherein the thickness of the coating is between 0.05 mm and 0.5 mm.
- 15. The process according to claim 3 wherein the thickness of the coating is between 0.05 mm and 0.5 mm.
- 16. The process according to claim 4 wherein the thickness of the coating is between 0.05 mm and 0.5 mm.
- 17. The process according to claim 1 further comprising applying a polymeric protecting film to the copper alloy.
Priority Claims (1)
Number |
Date |
Country |
Kind |
P 98 01 05691 |
Nov 1998 |
AR |
|
Parent Case Info
This is a divisional application under 37 C.F.R. 1.53(b) of U.S. patent application Ser. No. 09/438,742, filed Nov. 10, 1999, which claims priority under 35 U.S.C. §119 to Argentine Application Serial Number AR P 98 01 05691, filed Nov. 11, 1998.
US Referenced Citations (8)
Foreign Referenced Citations (1)
Number |
Date |
Country |
825152 |
Dec 1959 |
GB |