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Surface Quality of Continuous Casting Billets

2022-03-24

1. Surface cracks 1) Surface longitudinal cracks Longitudinal cracks on the surface of continuous casting slabs will affect the quality of rolled products. For example, a longitudinal crack with a length of 300 mm and a dep...

What are the reasons for the looseness and shrinkage of the continuous casting billet

2022-03-24

1 Introduction A steelmaking plant of an iron and steel (group) company has built a new 1800mm slab continuous casting machine. The designed slab specifications are 200mm, 220mm, 250mm thick and 1400mm~1800mm wide. During the...

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...