What is a rolling section and what does rolling mean

Hot-rolled section steel is a steel with various geometric cross-sectional shapes rolled by heating billets. According to the different shape of the section steel, it is divided into three types of section steel: simple section, complex section or special-shaped section and periodic section.

The characteristic of a simple section is that any point around the section is tangent and generally does not intersect in the section, such as round steel, square steel, hexagonal steel, flat steel, triangular steel, bow steel and elliptical steel.

Complex sections include angle steel, I-beam, channel steel, T-beam, H-beam, Z-beam, rail, sheet pile, window frame steel and other miscellaneous section steel;

A periodic section is a periodic change in the shape and size of the section along the length of the steel, such as threaded bars, axles, and ploughshares.

According to the size of the section size of the section steel, it is divided into three types: large section steel, medium section steel and small section steel.

At present, China's hot-rolled steel for construction mainly uses ordinary carbon steel Grade A No. 3 steel (carbon content, which is characterized by easy smelting, low cost, moderate strength, good plasticity and weldability, suitable for construction projects.

Most of the hot-rolled sections of low-alloy steel are hot-rolled threaded steel bars and sections rolled from 16Mn, and special-shaped section steels are used less. Compared with ordinary I-beam, H-beam has the advantages of large cross-sectional modulus, light weight, steel saving, and easy combination and connection with other components.

In China, hot-rolled steel has become one of the most widely used materials in various capital construction, such as rebar, axle and ploughshare steel, according to the size of the section size. Machinery, chemical, shipbuilding, mining, petroleum and railway departments all use a large number of various types of hot-rolled section steel. In construction projects, hot-rolled section steel is mainly used for load-bearing skeletons (beams, columns, trusses, etc.) of industrial and civil houses and bridges, tower mast structures, high-voltage transmission line supports, etc.

Hope it helps you ...

It should be hot-rolled steel, right?

The explanation of the word for rolling steel is: rolling steel zhágāng. (1) The billet is rolled into all kinds of useful material steel required by the rolling mill.

The explanation of the word for rolling steel is: rolling steel zhágāng. (1) The billet is rolled into all kinds of useful material steel required by the rolling mill.

The structure is: rolled (left and right structure) steel (left and right structure). The pinyin is:

zhágāng。The part of speech is: verb.

The phonetic pronunciation is: one

What is the specific explanation of steel rolling, we will introduce it to you through the following aspects:

1. Citations and explanations [click here to view the details of the plan].

A steel billet that is pressed into a certain shape. Yin Yanyi's poem "In the Iron and Steel Factory, in the Rolling Workshop": "In the rolling workshop, I saw the greatest miracle in the world, ordinary workers, directing the fast-rotating machines. ”

2. Chinese dictionary.

A steel that presses a billet into a certain shape.

3. Network Explanation.

Steel rolling (Chinese pinyin: zhágāng English: steelrolling), the pressure processing process of changing the shape of the steel ingot and billet between rotating rolls is called steel rolling.

The purpose of steel rolling is the same as other pressure processing, on the one hand, it is to obtain the required shape, such as: steel plate, strip, wire rod and various section steel; On the other hand, in order to improve the internal quality of steel, our common automobile plates, bridge steel, boiler steel, pipeline steel, rebar, steel bars, electrical silicon steel, galvanized sheets, tin-plated plates, including train wheels are all processed by Zhaochen through the rolling process.

Idioms about rolling steel.

Steel casting, casting, steel bars, iron bones, secretly pouring words, not reaching the meaning of hating iron, guessing which steel is knees, talking about heart-to-heart, cutting steel and cutting iron.

Words about rolled steel.

For a long time, the words of steel are not up to the meaning, steel and iron bones are secretly poured and milled, dry rolling, Kun steel, iron casting, hundred refining into steel, selflessness, large fine into steel, pouring iron casting.

Sentence formation about rolling steel.

1. The power from the main drive is sent into the box through rotation and transmitted to the smooth rod and screw actuator, and the steel pipe to be rolled is sent to the main head for rolling through the top plate of the tube blank.

2. DC speed control device is a motor speed control device, which is widely used in steel rolling, mining, marine drilling and other occasions that require high-performance controllable power dragging, and plays a pivotal role in the field of automatic control, and its quality will inevitably have an important impact on the entire control system.

3. Manufacture door frames, internal stiffeners, reinforcing plates, side grooves, shutters and modules, and choose cold-rolled or hot-rolled steel plates.

4. The environmental interference in the furnace caused by the infrared temperature measurement of the billet in the rolling heating furnace was analyzed.

5. Township enterprises include Xinzhou Lida **** and brick factory, quartz factory, rolling mill and wood factory.

The meaning of rolling steel is as follows:

A general term for the various process methods of processing steel ingots or billets into steel.

The billet from the steel mill is only a semi-finished product, and it must be rolled in the rolling mill before it can become a qualified product. The pressure process of changing the shape of the steel ingot and billet between rotating rolls is called steel rolling. The purpose of rolling steel is the same as that of other pressure processes, on the one hand, to obtain the desired shape, for example:

steel plate, strip steel, wire rod and various section steel, etc.;

On the other hand, in order to improve the internal quality of steel, our common automotive plates, bridge steels, boiler steels, pipeline steels, rebars, steel bars, electrical silicon steel, galvanized sheets, tin plates, including train wheels are all processed by the rolling process.

The rolling method can be divided into hot rolling and cold rolling according to the different rolling temperatures; According to the relative motion relationship between the rolled piece and the roll during rolling, it can be divided into longitudinal rolling, transverse rolling and oblique rolling; According to the forming characteristics of rolled products, it can also be divided into general rolling hole Zheng system and special rolling. Cycle rolling, spinning rolling, bending forming, etc. are all special rolling methods.

In addition, due to the wide variety of rolled products and different specifications, some products are produced after many rolls, so the production of rolled steel is usually divided into two categories: semi-finished product production and finished product production.

China's large steel mills have been using advanced continuous rolling mills since the 70s, and the continuous rolling mills have adopted a complete set of advanced automatic control systems, and the whole production process and operation monitoring are controlled by computers, and the rolling pieces are rolled at the same time on several rolling mills, which greatly improves the production efficiency and quality.

China's crude steel output ranks first in the world. The annual output of crude steel in the top ten iron and steel enterprises in China is more than 10 million tons. In recent years, the restructuring of steel has entered the fast lane, such as Guangdong Iron and Steel Group controlled by Baosteel, Shandong Iron and Steel Group mainly established by Shandong Jigang and Laigang, and Hebei Iron and Steel Group.

However, in order to revitalize China's steel industry, we must take the road of refinement.

At present, hot-rolled coil and cold-rolled coil are still stuck in the bottleneck of heavy output and light quality. The steel rolling industry must take the high-end route, the shipbuilding industry, the automobile manufacturing industry, the prosperity of the construction industry, to the rolling industry to bring opportunities, but the rise in ore prices to China's rolling industry has brought new difficulties.

In order to become bigger and stronger, the domestic steel rolling industry must continue to strengthen a series of links such as billet quality, heating, roll shape control, coiling capacity, and pickling. In addition, the first, second, heavy, and too heavy heavy machinery must rise up and explore high-precision rolling equipment. Domestic Baosteel, Anshan Iron and Steel, Wuhan Iron and Steel, Shougang Design Institute, Dongda, Beijing University of Science and Technology, Yan University and other universities and research institutions should also strengthen joint development with iron and steel groups.

Rolling steel, referred to as steel rolling (Hanyu pinyin: zhá gāng English: steel rolling), is a pressure processing process that changes the shape of the steel ingot and billet between rotating rolls.

The purpose of steel rolling is the same as other pressure processing, on the one hand, it is to obtain the required shape, such as: steel plate, strip, wire rod and various section steel; On the other hand, in order to improve the internal quality of steel, our common automotive plates, bridge steels, boiler steels, pipeline steels, rebars, steel bars, electrical silicon steel, galvanized sheets, tin plates, including train wheels are all processed by the rolling process.

The rolling method can be divided into hot rolling and cold rolling according to the different rolling temperatures; According to the relative motion relationship between the rolled piece and the roll during rolling, it can be divided into longitudinal rolling, transverse rolling and oblique rolling; According to the forming characteristics of rolled products, it can also be divided into general rolling and special rolling. Cycle rolling, spinning rolling, bending forming, etc. are all special rolling methods. In addition, due to the wide variety of rolled products, different specifications, and some products are produced after many rolls, so rolling production is usually divided into two categories: semi-finished product production and finished product production.

Rolling: The metal billet passes through the gap (various shapes) of a pair of rotating rolls, and the cross-section of the material is reduced and the length is increased due to the compression of the rolls, which is the most commonly used production method for the production of steel, mainly used to produce profiles, plates, and pipes. It is divided into cold rolling and hot rolling.

There are two types of rolling: hot rolled and cold rolled.

This is a base hole gap fit H7 F6. Limit deviation of the hole 25 + 0 Limit deviation of the axis 25

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