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17-4PH是美国开发研制的马氏体沉淀硬化型不锈钢,对应的中国牌号为0Cr17Ni4Cu4Nb,本钢种的无缝钢管生产的关键是:热穿孔加热温度范围较窄,且热穿孔后管内存在较强的内应力,应马上进行热处理。冷加工时打头后也应马上进行热处理。在加工过程中,17-4PH处于不同状态,其耐腐蚀能力也不同,应采用不同的酸洗工艺。钢管通过采用不同的热处理工艺可得到所需的再加工性能和成品的使用性能。
17-4PH is developed by the United States martensitic precipitation hardened stainless steel, the corresponding Chinese grade 0Cr17Ni4Cu4Nb, the key steel seamless pipe production is: hot perforation heating temperature range is narrow, and after the thermal perforation of the pipe within the more Strong internal stress, heat treatment should be carried out immediately. Cold processing should be carried out immediately after the first heat treatment. In the process of processing, 17-4PH in different states, its corrosion resistance is also different, should be used in different pickling process. Steel through the use of different heat treatment process can get the required rework and finished product performance.