Advantages and disadvantages of continuous rolling pipe mill
The main advantages of continuous rolling seamless pipe mill are as follows:
① High productivity. The maximum elongation coefficient of the mill can reach 7, the maximum rolling speed can reach 7 m / s, and the maximum annual output of the mill can reach 960000 tons.
② The surface quality of seamless pipe is good. Due to the long mandrel with grinding and chromium plating treatment, the inner surface of seamless tube is of good quality, with smoothness of 4 ~ 6 μ, 12 ~ 15 μ for automatic tube rolling mill and 20 ~ 25 μ for periodic tube rolling mill.
③ The length of seamless pipe is long. The length of steel tube produced by continuous rolling mill is generally about 30 m, and the longest is up to 50 m.
④ The production cost is low. Because of the high output and low metal consumption, the production cost of the mill is much lower than that of other mills.
⑤ High degree of mechanization and automation.
Main disadvantages of continuous rolling seamless tube mill
There are many equipment, large workshop, large electrical installed capacity, complex equipment control and high investment in one-time construction.
The naming characteristics (Methods) of continuous rolling seamless tube production line. The mill type and mandrel operation mode and the maximum size of outer diameter produced by the reasonable design of the mill are adopted in the continuous pipe mill.
