How to choose all parts of accessories
Release time:
2021-11-12
Regarding the selection of rolls for rolling mills, in general, from the roughing mill frame to the finished rolling frame, the reduction is from large to small, but the rolling speed is getting higher and higher. Therefore, the general roll selection is: the coarse roll is mainly based on strength and thermal cracking resistance, taking into account wear resistance; the fine roll is mainly based on wear resistance, taking into account thermal cracking resistance and strength.
The working layer of the chilled cast iron roll of the rolling mill is organized as basic carbide, and the core is gray iron. The transition location {and transition layer} during the period is clearly identifiable on the port. Chilled cast iron rolls are known for their wear resistance.
Regarding the selection of rolls for rolling mills, in general, from the roughing mill frame to the finished rolling frame, the reduction is from large to small, but the rolling speed is getting higher and higher. Therefore, the general roll selection is: the coarse roll is mainly based on strength and thermal cracking resistance, taking into account wear resistance; the fine roll is mainly based on wear resistance, taking into account thermal cracking resistance and strength.
In addition, according to the size of the groove root stress, the strength of the roll should be appropriately higher than that of the simple pass roll when rolling the special-shaped section.
The pass patterns for the production of rebar and round steel are roughly the same, and the difference between them lies in the choice of holes before the finished product. Domestic and foreign production of threaded steel products before the hole generally have the following four ways: 1 the use of general rolling round steel with a single arc elliptical hole. 2 flat oval K hole. 3 double arc oval holes. 4 short flat oval hole, the hole before the finished product takes the kind of hole type in the above four, mainly depends on the product structure of the factory, the operation of workers, adjustment and adaptability.
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