76mm Continuous Tube Mill of Chengde Steel Passes Hot Test
2013-01-04 03:08:54
Process of Rolling & Sizing Mill
Ф76mm Tube Mill of Chengde Steel
Finished Tube Products
The world’s first short-flow less-stand 3-Roll Tube Mill
The short-stress less-stand continuous tube rolling & sizing mill designed, manufactured and commissioned by CISDI for Jiangshu Chengde Steel Tube Co., Ltd. successfully passed the hot on-load test run on September 23rd, 2012.
The Φ76 continuous tube rolling & sizing mill developed by CISDI and Jiangshu Chengde Steel jointly is the first short-process less-stand 3-roll continuous tube mill in the world, and also the one with the smallest diameter. It can be used for producing quality structural tubes, oil well tubes and high-pressure boiler tubes with O.D. of 42~76mm and wall thickness of 3.5~12mm, piece rate of 90p/h and annual capacity of app. 50,000t.
The line is implemented with leading 3-roll longitudinal rolling technology, servo hydraulic gap control technology, retained mandrel technology and lateral roll changing technology. Compared with cross rolling, the line products feature high precision product, good inner and outer surface quality, short roll change time (30min.). Due to its less-stand continuous rolling technology and combined extractor & sizing technology, the line has merits of high yield, low energy consumption and less pollution.
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