The reason and solution of "bulging belly" in steel rolling process

2024-12-13

As shown in the figure above, there is an intermittent "bulge" phenomenon on the finished product, the higher the rolling temperature, the more obvious the rolling defects, and the lower the temperature will be bett...

An analysis on operation standard and safety technology of steel rolling workers in steel mills

2024-12-13

In the steel manufacturing industry, steel rolling process is a crucial link, which directly determines the quality, performance and use of steel. As a steel rolling worker in a steel mill, not only need to master the operation...

Medium and thick plate basic knowledge questions

2024-11-11

1. How are steel plates classified by thickness? Steel strip is divided into five categories according to thickness: extra thick plate, thick plate, medium plate, thin plate and extremely thin strip. In China, the steel pla...

Application research of automatic control technology in steel rolling production

2024-11-11

Abstract: Cold rolled steel is a steel processing process in which the steel plate is further thinned to the target thickness at room temperature. It has higher precision than hot rolled steel, and can make the steel with highe...

Quality analysis of rebar

2024-10-08

Improving product quality is the way to rejuvenate the country, and it is the efficiency and competitiveness of enterprises. The steel rolling process deeply realizes that as the production unit of the end product, the strict m...

Cold Rolling Worker Examination Papers with Answers

2024-10-08

Cold mill test papers and answers   Total score: 100 questions: 50 questions   1. Single choice (20 questions, 40 points)   1. The west section of the acid rolling line of the cold rolling...

Common defects and improvement measures in large ingot production

2024-09-12

It is necessary to use large ingot in the production of extra-thick steel plate, and the internal quality problems of large ingot are mainly defects such as loose center and stratification of tail. Reflected on the steel plate,...

Medium and thick plate Basic Knowledge Questions and Answers (1)

2024-09-12

Section 1 Quality control and heating of medium thick slab material one What are the advantages and disadvantages of using raw materials for blooming? Advantages: The fledgling billet is made of large steel ingot rolled...

Cold rolled non-oriented silicon steel with high reduction rate

2024-08-08

Abstract: Microstructure and texture are important factors affecting the properties of non-oriented silicon steel. In order to improve the product properties, the effects of cold rolling reduction rate (71.7%~87.0%) on the micr...

Compression technique of solidification end in continuous casting

2024-08-08

1 Research Background Extra-thick plate, large size/bar products are widely used in major projects and major equipment in important fields of ocean engineering, energy and power, national defense and military industry, whic...

Stainless steel strip cold rolling basic knowledge

2024-07-04

Stainless steel sheet is usually produced by cold rolling method, cold rolled stainless steel is mainly produced by rolling method, and only small batches of stainless steel plates with individual steel numbers are produced ind...

Control of peeling defects of hot rolled coil

2024-07-04

The slab is rolled into hot-rolled coil after hot feed, and cold-rolled sheet, galvanized and other products are produced after cold rolling. Generally, the production quality of hot rolled coil is stable, but occasionally a sm...