基本信息:
- 专利标题: maçarico de plasma usado para aquecer aço fundido
- 申请号:BR0207269 申请日:2002-02-14
- 公开(公告)号:BRPI0207269B1 公开(公告)日:2016-03-08
- 发明人: MITAKE HIROYUKI , YASUMITSU KAZUNORI , TANAKA KAZUHISA , ASANO MITSUJI , NISHIHARA RYOJI , FUKUNAGA SHINICHI , KAWACHI TAKESHI , HIRAMOTO YUJI
- 申请人: NIPPON STEEL & SUMITOMO METAL CORP , NIPPON STEEL CORP
- 专利权人: NIPPON STEEL & SUMITOMO METAL CORP,NIPPON STEEL CORP
- 当前专利权人: NIPPON STEEL & SUMITOMO METAL CORP,NIPPON STEEL CORP
- 优先权: JP2001037414 2001-02-14
- 主分类号: B22D11/10
- IPC分类号: B22D11/10 ; B22D11/11 ; B22D41/01 ; B22D41/015 ; H05B7/00 ; H05B7/18 ; H05H1/28 ; H05H1/34 ; H05H1/48
A plasma torch 20a used for heating a molten steel has an outer cylinder 26 composed of a double tube 21, the bottom of which is blocked annularly, and a bottomed cylindrical anode electrodes 28 that is installed within the outer cylinder 26 with a gap existing between the anode electrode 28 and the inside of the double tube 21, the plasma torch being characterized in that pure copper is not used as a material for the anode electrode 28, the material has a softening point exceeding 150 DEG C, and the ratio of an electric conductivity D of the anode electrode 28 to an electric conductivity N of the outer cylinder 26 satisfies the formula: 0.2 ≤ D/N < 1.0. The plasma torch prevents the melting loss and wear of the anode electrode caused by the splashes and the heat produced in the anode electrode, suppresses generation of a side arc, shows an extended life, and stabilizes the casting operation and improves the quality of the slab.
公开/授权文献:
- BR0207269A 公开/授权日:2004-02-10
信息查询:
EspacenetIPC结构图谱:
B | 作业;运输 |
--B22 | 铸造;粉末冶金 |
----B22D | 金属铸造;用相同工艺或设备的其他物质的铸造 |
------B22D11/00 | 金属连续铸造,即长度不限的铸造 |
--------B22D11/10 | .供给或处理熔融金属 |