Improving the Quality of Rolled Metal Products Using a Set of Quality Management Statistical Methods

Abstract

In the face of the increasing need of shaped and bar iron for buildings and installations construction, production of modern domestic vessels at one of the Kuzbass metallurgical enterprises, mastering the production of hot-rolled bulb bars made from highquality structural steel, which is based on existing technology, has begun. To ensure the production quality, control quality techniques for “asymmetric bulb bar” experimental rolled steel made from A32 and D32 steel grades is proposed. It enabled us to identify the systemic and most significant unsatisfactory features in production process, to develop measures to eliminate them and prevent possible defects in mass production of rolled products. These techniques are based on the application of quality management statistical methods. The implementation of a quality control techniques and recommended measures to prevent possible defects made it possible to improve the quality of metal, ensure production stability and competitiveness in the metal market.