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00Cr18Mo2铁素体不锈钢具有广泛的用途和发展潜力。本文介绍了对其耐蚀性能和冷轧薄板的力学性能的一些研究结果。研究结果表明,00Cr18Mo2钢在弱腐蚀介质中有良好的耐蚀性,该钢具有优异的耐氯化物应力腐蚀(SCC)性能,在含氯化物介质中的耐局部腐蚀(点蚀、缝隙腐蚀)性能优于304不锈钢。为提高焊后耐晶间腐蚀性能,钢中需要加入适量的钛。00Cr18Mo2钢1mm厚冷轧板有良好的深冲成型性能和冲击韧性,其韧性-脆性转变温度低于-78℃,高温处理后板材的韧性-脆性转变温度可提高到室温附近(0~25℃)。根据试验结果,当1mm厚冷轧板用于制造非焊接设备时,在通常使用温度条件下可不必担心室温脆化问题;但用作焊接用途时,需要注意焊接热影响区的室温脆性。 相似文献
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00Cr18Mo2铁素体不锈钢具有良好的综合性能,本文就其耐蚀性能进行了研究。研究结果表明,00Crl8Mo2钢在弱蚀性介质中一般耐蚀性良好,抗局部腐蚀特别是抗氯化物应力腐蚀性能优异是此钢最突出的特点。00Crl8Mo2钢在抗点蚀性能方面优于304L而与316L不锈钢相当,退火态00Crl8Mo2钢在含氯化物沸腾溶液中经1000多小时试验而不产生应力腐蚀破裂。 相似文献
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试验用00Cr13Ni7Co5Mo4W钢(/%:0.007C,13.23Cr,7.02Ni,5.06Co,3.72Mo,0.96W)由50 kg真空感应炉熔炼,铸成10 kg锭,锻成55 mm×55 mm方坯并轧成3 mm×60 mm带材。利用热力学计算软件ThermoCalc分析该钢的析出行为,并采用金相显微镜、透射电镜和动电位极化法,研究了该钢的组织结构、力学性能和腐蚀性能。结果表明,R相是马氏体时效不锈钢在时效处理过程中的主要强化相;为获得细小、弥散的R相和良好的强韧性配合,确定最佳热处理工艺为1100℃固溶+490℃时效,钢的抗拉强度、屈服强度和伸长率分别为1 320MPa、1 450 MPa和10.8%;马氏体时效不锈钢00Cr13Ni7Co5Mo4W点蚀击穿电位为230 mV,人工海水中年平均腐蚀率为1.51μm/a,具有较好的耐腐蚀性能。 相似文献
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本文介绍了深冲用0Cr18Ni9Cu2不锈钢冷轧板的开发。论述了钢中铜对0Cr18Ni9Cu2不锈钢板成形性的影响,提出了提高0Cr18Ni9Cu2不锈钢深冲性能的措施。 相似文献
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本文汇集了主要合金元素在Cr-Ni奥氏体不锈钢的作用、扼要介绍了典型Cr-Ni不锈钢的物理、力学、冷成型和耐蚀性。事实上,超低碳奥氏体不锈钢00Cr18Ni10和00Cr18Ni14Mo2(304L和316L)的耐蚀性和冷成型性能显著优于Ti稳定化的奥氏体不锈钢。鉴于这种状况,建议在腐蚀环境中,应该使用超低碳Cr-Ni奥氏体不锈钢(304L)代替目前广泛使用的Ti稳定化不锈钢(321)。 相似文献
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研制的瞬时耐高温弹簧不锈钢00Cr12Ni8Cu2AlNb 和00Cr13Ni8Mo2TiNbAl,是一种新型马氏体时效不锈钢,通过研究合金强化元素 Cu 和 Mo 的作用,使该钢既有好的强韧性,又有耐蚀性,更具有好的生产工艺和制造工艺性能。主要用于要求强度高、韧性好耐蚀的场合。该钢同美国名牌钢号 Custom455相似。在主要性能方面(强韧性、耐蚀性、工艺性)基本达到了国际同类材料的先进水平。 相似文献
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实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。 相似文献
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<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic 相似文献
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正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field, 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year, 相似文献
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《China Nonferrous Metals Monthly》2014,(12)
正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform. 相似文献
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正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness. 相似文献