发明名称 |
METHOD AND APPARATUS FOR QUENCHING OF MATERIALS IN VACUUM FURNACE |
摘要 |
A method of quenching a material by injecting a cryogenic fluid into a cooling stream and simultaneously venting gas from the cooling stream, in order to maintain a desired target pressure in a chamber containing the material. In a examplary application of the method, the quenching is a step in the heat-treatment of a metal and the chamber is part of a vacuum furnace. Also disclosed is a method of supplying a cryogenic fluid to a process in which the amount of cryogenic fluid necessary to perform the process is transferred from a storage vessel to a supply vessel via a supply line, after which the supply line is closed. An elevated pressure is maintained by vaporization of a relatively small amount of the cryogenic fluid that is allowed to build in a pressure vessel that is in fluid communication with the supply vessel. |
申请公布号 |
CA2776747(C) |
申请公布日期 |
2014.12.30 |
申请号 |
CA20122776747 |
申请日期 |
2012.05.15 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
ZURECKI, ZBIGNIEW |
分类号 |
C21D1/613;B01J3/03;C21D1/773 |
主分类号 |
C21D1/613 |
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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