采用Φ210mm连铸坯的轧坯生产冷拔高压锅炉钢管

PRODUCTION OF COLD-DRAWN IHGH-PRESSURE-BOILER STEEL PIPES WITH ROLLED ROUNDS MADE FROM Φ210mm CC BLOOMS

介绍了天津市无缝钢管厂采用２０ＧΦ２１０ｍｍ连铸坯（先经６５０轧机轧制成Φ７５ｍｍ实心圆管坯）生产冷拔高压锅炉钢管的管坯生产工艺、冷拔工艺和产品质量，讨论了生产中应采取的主要技术措施。生产实践表明，这种管坯可以生产出符合标准要求的高压锅炉钢管。

The article involves main aspects concerning production of cold-drawn high-pressure-boiler steel pipes with Φ75mm rounds rolled by the 650mm pipe mill with Φ210mm 20G CC blooms,covering the manufacture process of the rolled rounds,cold-drawing product and the product quality.Main technical measures taken for the production are also discussed.Relevant operation practice has led to the conclusion that high-pressure-boiler pipes up to relevant standard can be produced with the said rolled rounds.