发明名称 |
Menetelmä ja laite rauta- ja terässeoksista valmistettujen työkappalei den pintakarkaisemiseksi. |
摘要 |
1347555 Induction and plasma arc heating BOHLER & ZO AG Gebr 15 Sept 1971 [21 Sept 1970] 43056/71 Heading H2H [Also in Division C7] In a self-quenching process the surface is scanned by a beam of cold plasma which supplies energy at a uniform rate to produce elemental areas of metastable austenite having constant cross-sectional shape and properties, the plasma being arranged to conductively close a circuit operated at constant high frequency, particularly 10 to 100 mc./sec. The plasma may be formed from argon. Suitable apparatus incorporates a frequency-stabilized generator 1 connected through matching unit 6 to torch 2, the input power and reflected power being measured by meters 7 and 8 respectively. The torch comprises an electrode 9 of thoriated tungsten mounted in a tube 11 into which gas is introduced through inlet 11, and which has an outlet nozzle 14 to shape the jet 16. |
申请公布号 |
FI52108(C) |
申请公布日期 |
1977.06.10 |
申请号 |
FI19710002549 |
申请日期 |
1971.09.13 |
申请人 |
VEREINIGTE EDELSTAHLWERKE, |
发明人 |
SWOBODA,KARL;KULMBURG,ALFRED;BLOECH,RUPERT |
分类号 |
C21D1/09;H05H1/30 |
主分类号 |
C21D1/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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