![A method for reducing residual stress in a roller cone bit](/ep/2009/09/16/EP2101038A1/abs.jpg.150x150.jpg)
基本信息:
- 专利标题: A method for reducing residual stress in a roller cone bit
- 专利标题(中):一种减少牙轮钻头残余应力的方法
- 申请号:EP09007821.3 申请日:2006-07-14
- 公开(公告)号:EP2101038A1 公开(公告)日:2009-09-16
- 发明人: Zahradnik, Anton F. , Jones, Ronnie L. , Nguyen, Don Q. , Ricks, Gregory L. , Beuershausen, Christopher G. , Sullivan, Eric C.
- 申请人: Baker Hughes Incorporated
- 申请人地址: 2929 Allen Parkway Suite 2100 Houston, TX 77019 US
- 专利权人: Baker Hughes Incorporated
- 当前专利权人: Baker Hughes Incorporated
- 当前专利权人地址: 2929 Allen Parkway Suite 2100 Houston, TX 77019 US
- 代理机构: Jeffrey, Philip Michael
- 优先权: US183121 20050715
- 主分类号: E21B10/08
- IPC分类号: E21B10/08 ; E21B10/20 ; E21B10/22
摘要:
A roller cone bit (11) has a ball retention system to secure the cones (17) to the head (15). A radial ball race (19) includes a ball way (21) with a ball plug (27) to keep the balls (25) in the ball race. The ball plug (27) is secured to the head by welding. Any residual stress in the weld region is alleviated by applying heat or vibration to promote relaxation.
摘要(中):
牙轮钻头(11)具有球保持系统以将锥体(17)固定到头部(15)。 径向滚珠滚道(19)包括具有滚珠塞(27)的滚珠通道(21)以将滚珠(25)保持在滚珠滚道内。 球塞(27)通过焊接固定到头部。 通过施加热量或振动来缓解焊接区域中的任何残余应力以促进松弛。
IPC结构图谱:
E | 固定建筑物 |
--E21 | 土层或岩石的钻进;采矿 |
----E21B | 土层或岩石的钻进;从井中开采油、气、水、可溶解或可熔化物质或矿物泥浆 |
------E21B10/00 | 钻头 |
--------E21B10/08 | .牙轮钻头 |