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发明公开
CN101665891A 不锈耐热合金钢无缝钢管及其生产方法 无效 - 撤回

不锈耐热合金钢无缝钢管及其生产方法
摘要：
一种不锈耐热合金钢无缝钢管及其生产方法，其化学成份以重量百分比计为：C 0.04～0.10，Si≤0.75，Mn≤2.00，P≤0.03，S≤0.03，Ni 17.00～23.00，Cr 24.00～26.00，Nb+Ta 0.20～0.60，N 0.15～0.35，余量为Fe和不可避免的微量元素；其生产方法采用了热挤压+冷轧和计算机自动控制固溶热处理等先进工艺。本发明产品具有优良的机械性能、耐高温和耐腐蚀性能，其各项技术指标均达到或超过国家有关技术标准的规定，成功地为超超临界电站锅炉提供了一种合格的新品种用管。
摘要（英）：

The invention relates to a stainless heat-resistant alloy steel seamless steel tube and a preparation method thereof. The seamless steel tube comprises the following chemical compositions by weight percent: 0.04-0.10% of C, 0.75% or less of Si, 2.00% or less of Mn, 0.03% or less of P, 0.03% or less of S, 17.00-23.00% of Ni, 24.00-26.00% of Cr, 0.20-0.60% of Nb+Ta, 0.15-0.35% of N and the balance Fe and inevitable trace elements. The preparation method of the invention adopts hot extrusion and cold rolling, computer automatic control solution heat treatment and other advanced technologies. Theproduct of the invention has excellent mechanical performance, high temperature resistant and corrosion resistance and various technical indexes of the product all meet or exceed Chinese relevant technical standards, thus successfully providing a new kind of qualified tube for the ultra supercritical power station boiler.

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