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目前国内测量钢水温度习惯采用的测温探头系由铂一铂铑合金制作,价格昂贵。此外,铂铑系探头的测温上限1750℃也不能满足炼钢生产的需要。钨铼热电偶具有熔点高、测量温度高、热电动势高、灵敏度高、高温强度大、韧性好、耐腐蚀性好等优点。国外巳采用消耗式钨铼热电偶进行钢水测温。我国的钨、铼资源丰富。钨铼合金价格比铂铑合金便宜。上海钢铁研究所为提高炼钢测温范围,节约铂铑贵金属,降低测温费用,在浙江省
Currently used to measure the temperature of the molten steel temperature probe is made of platinum and a rhodium alloy, expensive. In addition, platinum and rhodium-based probe temperature limit of 1750 ℃ can not meet the needs of steel production. Tungsten rhenium thermocouple has the advantages of high melting point, high measuring temperature, high thermoelectromotive force, high sensitivity, high temperature strength, good toughness and good corrosion resistance. Foreign countries have adopted consumption tungsten rhenium thermocouple temperature measurement. China’s tungsten, rhenium-rich resources. Tungsten rhenium alloy cheaper than platinum and rhodium alloy. Shanghai Institute of Iron and Steel to improve the temperature measurement range, saving precious metals platinum and rhodium, reducing temperature measurement costs in Zhejiang Province