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...

Aluminum alloy hot rolled strip production process

2024-06-14

Production process of aluminum plate and strip: flat ingot milling surface of flat ingot —— flat ingot heating —— hot rough rolling (reversible) —— hot fine rolling (irreversible) ——...

Steel defects: What is the effect of oxidation color on use?

2024-06-14

What is oxidation color: Oxidation color more complete name should be: steel surface annealing oxidation color difference, there is also directly called "annealing oxidation". In fact, put the soup spoon on the ga...

ESP-- strip headless continuous casting and rolling technology

2024-05-09

ESP Steel rolling workshop of Hebei Taihang Iron & Steel Group Co., LTD., "The minimum thickness of sheet rolling is only 0.7 mm, the energy consumption is reduced by 40%, and the pollutant emission is reduced by 70%.....

These rolling techniques are the foundation!

2024-05-08

The development of society cannot be separated from all kinds of steel rolling products, the progress of various industries need to be the promotion of steel rolling products, construction, electrical appliances, food and so on...

Intermediate and operation steps of acid continuous rolling welding machine

2024-04-18

operating steps (1) Entrance and exit side guide guards are closed. (2) The inlet and exit fixtures are closed. (3) The width of the upper strip and the next strip is calculated by operating the side guide guard on both si...