Selection of Raw Material in Steel Rolling Mill Production

Selection of Raw Material in Steel Rolling Mill Production

In steel rolling mill production, ingots, billets and continuous casting billets are commonly used as raw materials, and die casting billets are also used.

  

Material selection should pay attention to:

(1) Production and quality should be considered.

Choose appropriate billet size, reduce rolling passes as much as possible to increase production, while ensuring compression ratio.

(2) Considering the economic benefits and production possibilities, all consumption should be reduced.

Raw material preparation is mainly to check and clean up various surface defects (scarring, cracking, slag inclusion, folding, etc.) If not cleaned before rolling, rolling will continue to expand and cause more defects.

Cleaning methods:

Flame Cleaning: As for carbon steel, low alloy steel, metal consumption is large

Wind shovel cleaning: suitable for carbon steel, alloy steel, high carbon steel (alloy steel has poor thermal conductivity, easy to crack by direct flame cleaning, must be preheated)

Grinding Wheel Cleaning (Planing): Suitable for alloy steel, peeling, the high metal consumption