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首页> 外文会议>5th International Conference on High Nitrogen Steels, 5th, May 27-28, 1998, Stockholm, Sweden >Refining of High Nitrogen Steels in a Closed Pressure Vessel
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Refining of High Nitrogen Steels in a Closed Pressure Vessel

机译：密闭压力容器中高氮钢的精炼

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摘要

The simultaneous removing of oxygen, sulphur and phosphorus during nitriding with nitriding from a gas phase of the austenitic type (18 % Cr, 9 % Ni) High Nitrogen Steels were investigated. A process named ,,Plasma Pressure Melting Process" (PPMP) was carried out in the air-tight plasma furnace equipped with the 100 kW D.C. plasma torch. Refining, nitriding and casting of the liquid steels were actualized under elevated pressure inside the furnace - up to 0.5 MPa_(abs).The intensity of the calcium vaporization from the liquid CaF_2-Ca flux used as a refining agent was quantified. The relation of [Ca]_(tot.)=f(a[0]) was established based on the measurement results of the oxygen activity in the liquid steel.
机译：研究了在奥氏体型（18％Cr，9％Ni）高氮钢的气相氮化过程中，同时进行氮化过程中氧，硫和磷的去除。在配备有100 kW DC等离子炬的气密等离子炉中进行了名为“等压熔融工艺”（PPMP）的过程。在炉内升高的压力下实现了液态钢的精炼，氮化和铸造-达到0.5 MPa_（abs）。量化了液体CaF_2-Ca用作精制剂时的钙汽化强度，建立了[Ca] _（tot。）= f（a [0]）的关系基于液态钢中氧气活度的测量结果。

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