IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0358121
(2003-02-03)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
65 |
초록
▼
Medium- and high-density articles are formed from melting and casting alloys containing tungsten, iron, nickel and optionally manganese and/or steel. In some embodiments, the articles have densities in the range of 8-10.5 g/cm3, and in other embodiments, the articles have densities in the range of 1
Medium- and high-density articles are formed from melting and casting alloys containing tungsten, iron, nickel and optionally manganese and/or steel. In some embodiments, the articles have densities in the range of 8-10.5 g/cm3, and in other embodiments, the articles have densities in the range of 10.5-15 g/cm3. In some embodiments, the articles are ferromagnetic, and in others the articles are not ferromagnetic. In some embodiments, tungsten forms the largest weight percent of the alloy, and in other embodiments the alloy contains no more than 50 wt % tungsten. In some embodiments, the articles are shell shot.
대표청구항
▼
1. A method for making articles having densities greater than 8 g/cc, comprising:forming an alloy comprising the following range of compositions: 20-75% tungsten; 5-70% nickel; 10-70% iron; and casting an article at least substantially from the alloy. 2. An article produced according to the method o
1. A method for making articles having densities greater than 8 g/cc, comprising:forming an alloy comprising the following range of compositions: 20-75% tungsten; 5-70% nickel; 10-70% iron; and casting an article at least substantially from the alloy. 2. An article produced according to the method of claim 1.3. The method of claim 1, wherein the casting step includes drop casting.4. The method of claim 3, wherein the casting step includes drop casting the molten alloy without passing the molten alloy through a sieve.5. The method of claim 1, wherein the casting step includes near-net-shape casting.6. The method of claim 1, wherein the casting step includes casting an ingot from the alloy and then forging the article from the ingot.7. The method of claim 1, further comprising mechanically deforming the cast article to a desired shape and size.8. The method of claim 1, wherein the casting step includes mechanically sizing the cast article by compressive grinding.9. The method of claim 1, wherein the alloy includes no more than 50% tungsten.10. The method of claim 1, wherein the alloy has a density in the range of 8-10.5 g/cc.11. The method of claim 1, wherein the alloy has a density in the range of 10.5-15 g/cc.12. The method of claim 1, wherein the alloy further comprises manganese.13. The method of claim 1, wherein the alloy further comprises steel.14. The method of claim 1, wherein the alloy includes ferrotungsten.15. A shotgun shell, comprising:a casing containing at least wadding, a charge and a primer; a plurality of shell shot within the casing, wherein the shell shot are at least substantially formed from a cast alloy comprising: 20-75% tungsten; 5-70% nickel; and 10-70% iron. 16. The shell of claim 15, wherein the cast alloy further comprises steel.17. The shell of claim 15, wherein the cast alloy further comprises manganese.18. The shell of claim 15, wherein the cast alloy contains ferrotungsten.19. The shell of claim 15, wherein the cast alloy has a density in the range of 8-10.5 g/cc.20. The shell of claim 15, wherein the cast alloy has a density in the range of 10.5-15 g/cc.21. The method of claim 9, wherein the alloy has a density in the range of 8-10.5 g/cc.22. The method of claim 9, wherein the alloy includes approximately 25 wt % tungsten, approximately 10-15 wt % nickel, and at least 55 wt % iron.23. The method of claim 22, wherein the alloy further includes at least 10 wt % steel.24. The method of claim 22, wherein the alloy is softer than gun barrel steel.25. A firearms projectile produced according to the method of claim 22.26. A firearms projectile produced according to the method of claim 1.27. The projectile of claim 26, wherein the projectile is softer than gun barrel steel.28. The shell of claim 15, wherein the alloy is softer than gun barrel steel.29. The shell of claim 15, wherein the alloy includes less than approximately 35 wt % tungsten, includes approximately 10-15 wt % nickel, and includes at least 55 wt % iron.30. The shell of claim 29, wherein the alloy is softer than gun barrel steel.31. The shell of claim 29, wherein the alloy further includes at least 10 wt % steel.32. The shell of claim 29, wherein the alloy includes approximately 25 wt % tungsten.33. The shell of claim 29, wherein the alloy is magnetic.34. The shell of claim 29, wherein the alloy includes ferrotungsten.35. The shell of claim 34, wherein the alloy includes manganese and has a nickel:manganese ratio greater than 2.0.36. The shell of claim 29, wherein the alloy has a density in the range of 8-10.5 g/cc.37. The shell of claim 29, wherein the alloy includes 20-35 wt % tungsten.38. The shell of claim 15, wherein the alloy has a nickel:iron ratio of less than 1.0.39. The shell of claim 20, wherein the alloy has a density of at least 11.0 g/cc.40. The shell of claim 20, wherein the alloy includes at least approximately 50 wt % tungsten.41. The shell of claim 20, wherein the alloy includes ferrotungsten.42. The shell of claim 20, wherein the alloy is magnetic.43. The shell of claim 20, wherein the alloy is softer than gun barrel steel.44. The shell of claim 20, wherein the alloy includes steel.45. The shell of claim 20, wherein the alloy includes 10-35 wt % nickel.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.