Título

THE IMPACT OF THE ROLLING CONDITIONS ON THE ROLL SURFACE – WEAR, FIRE CRACKS, STICKING AND FRICTION – IN SECTION MILLS

THE IMPACT OF THE ROLLING CONDITIONS ON THE ROLL SURFACE – WEAR, FIRE CRACKS, STICKING AND FRICTION – IN SECTION MILLS

Autoria

Schroeder, Karl Heinrich

DOI

10.5151/2594-5297-0071

Downloads

Baixar Artigo 109 Downloads

Resumo

The conditions rolling heavy sections are very complicated and create different surface conditions (uneven wear, fire cracks, sticking) in various areas of the passes. Additionally the roll pass design influences wear. Rolling loads may cause breakages of the barrel or of collars. The varieties of surface defects and the required strength of rolls cause difficulties in selecting the most wear resistant material for the rolls. Conventional methods do not overcome these problems. It is recommended that to optimize the rolling conditions the bar surface temperature is equalized and that roll lubrication, good descaling and surface skin cooling is used. The goal is to achieve better roll and mill performance with more wear resistant materials.

 

The conditions rolling heavy sections are very complicated and create different surface conditions (uneven wear, fire cracks, sticking) in various areas of the passes. Additionally the roll pass design influences wear. Rolling loads may cause breakages of the barrel or of collars. The varieties of surface defects and the required strength of rolls cause difficulties in selecting the most wear resistant material for the rolls. Conventional methods do not overcome these problems. It is recommended that to optimize the rolling conditions the bar surface temperature is equalized and that roll lubrication, good descaling and surface skin cooling is used. The goal is to achieve better roll and mill performance with more wear resistant materials.

Palavras-chave

Section mill rolls; Rolling conditions.

Section mill rolls; Rolling conditions.