发明名称 |
A TUBE AND USE OF SAID TUBE |
摘要 |
A metallic tube for heating a medium or subject outside thereof or inside it by transfer of heat energy through walls of the tube, in which heat is absorbed or emitted at least to a substantial degree by radiation on one or both of the inner and outer surfaces of the tube, is of a material forming a layer of essentially Al2O3 on the surfaces thereof when heated to at least approximately 750° C. At least one of the external and the internal surface of the tube is coated by one of a metal, metal alloy and metal compound, which after oxidation forms a layer having an emissivity coefficient exceeding 0.7, or by a layer essentially consisting of a metal oxide which has an emissivity coefficient exceeding 0.7. |
申请公布号 |
EP1957693(A4) |
申请公布日期 |
2011.08.03 |
申请号 |
EP20060824544 |
申请日期 |
2006.11.15 |
申请人 |
SANDVIK INTELLECTUAL PROPERTY AB |
发明人 |
OEHNGREN, CLAES;JOENSSON, BO |
分类号 |
C23C30/00;C10G9/20;C22C38/22;C22C38/28 |
主分类号 |
C23C30/00 |
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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