高压直流火花炉碳硫电位联合测定法,是学习和保留了电弧法的优点,有效地克服电弧法的缺点而逐步建立起来的一种新的定碳、定硫的方法。经过一年多来的生产实践,它显现出了下列的特点:①测量含量范围较大。硫从0.5％—0.005％;碳从5％—0.005％。②可用于对高温难熔金属或合金的低碳、低硫测定。③采用铜坩埚熔样,每次可熔0.2—3克,有利于对含量范围变动较大的试样的测定。不用大量的瓷舟、瓷管、瓷坩埚。炉 The combination of carbon and sulfur potentials in HVDC electric spark furnace is a new method of determining carbon and sulfur, which is gradually established by learning and retaining the advantages of electric arc and effectively overcoming the shortcomings of electric arc. After more than a year of production practice, it showed the following characteristics: ① measurement of the larger range. Sulfur from 0.5% -0.005%; Carbon from 5% -0.005%. ② can be used for high temperature refractory metals or alloys of low carbon, low sulfur determination. ③ using copper crucible melting sample, 0.2-3 grams per melt, is conducive to the determination of the sample range of larger changes. Do not have a lot of porcelain, porcelain tube, porcelain crucible. furnace