Quality optimization measures of ASTM A283 GR. C hot rolled steel coil plate

During the production process of ASTM A283 GR. C hot rolled coil, many problems such as too many inclusions, super size, side wave and medium wave often happen. According to practice experience, BBN steel suggest below quality optimization measures:

1. ASTM A283 GR. C hot rolled steel coil plate chemical composition
Reduce the harmful C, Mn, Als content, and reduce the Si content as far as possible, increase the control requirements of N, thus narrowing the fluctuations of the related Mn and Als.

2. ASTM A283 GR. C hot rolled steel coil plate making Process
Molten iron into converter is required full slag. Converter end point carbon is controlled to improve carbon drawing rate to 55% or so. The slag is used instead of slag ball to improve the slag effect.

3. ASTM A283 GR. C hot rolled steel coil plate rolling process
The temperature fluctuation of slab heating is controlled at 30 C, and a high final rolling temperature is used to control the laminar flow cooling water and reduce the setting up of each rack of ASTM A283 GR. C steel strips. Even though unilateral adjustment, roll adjustment and reasonable roll bending force are set up, good ASTM A283 GR. C hot rolled steel coil plate shape is ensured.

4. ASTM A283 GR. C hot rolled steel coil plate width
Optimize the functions of AWC and SSC, and control the curl tension, reasonably set the looper tension, reduce the width deviation, increase the width average reserve quantity, set reasonable rolling parameters, and control the width of rolling material in the width direction, so as to ensure good ASTM A283 GR. C hot rolled steel coil plate width.

With above measures, the ASTM A283 GR. C hot rolled steel coil plate quality is greatly optimized.