Causes and control measures of four major surface defects of billet

2022-03-24

Surface defects of billets 1 Reconnect 1.1 Causes of formation a. The pouring is interrupted due to various operating failures, and reconnection defects are likely to be caused on the surface of the slab after restarting ...

Summary of control methods for large depression defects in slabs

2022-03-24

In the production of continuous casting, billet dents occur from time to time, which not only affects the qualification rate of the billet, but also causes production accidents in serious cases. There are two main types of slab...

Changes in steel when heated

2022-03-24

Most of the heat treatment of steel needs to be heated to obtain austenite, and then cooled at different speeds to transform the austenite into different structures to obtain different properties of the steel. Therefore, to mas...

Automatic control of high pressure water descaling system

2022-03-24

0 Preface In the production process of hot-rolled steel, the furnace pig iron oxide scale on the surface of the billet is one of the main reasons for affecting the surface quality of the steel. Due to its existence, various p...

Basic knowledge about continuous pipe mills

2022-03-24

What is a continuous rolling mill? Continuous tube rolling mill is a high-efficiency rolling mill for producing medium and small diameter seamless steel tubes. It is to sleeve the perforated capillary on a mandrel, and pass t...

Production practice of reducing cost of red steel bar and rebar production line

2022-03-24

Abstract: This paper introduces the difficulties faced by the cost control of the bar production line in the rolling mill of Honghe Iron and Steel Co., Ltd. The equipment level of the bar production line is not high, the supply...