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These rolling techniques are the foundation!
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 are inseparable from steel rolling products, steel rolling production is particularly important. In the past, China's steel rolling technology is not mature enough, steel rolling efficiency is low, the quality of steel rolling products can not meet various needs, needs to be constantly imported from foreign, restricted the development of all walks of life, but at present China's automatic steel rolling technology has been greatly developed, can meet the needs of various steel rolling production.
1. Automatic steel rolling technology
1.1 Steel rolling technical requirements
For hot rolling rolling, there are mainly the following technical requirements:
First, the heating temperature. The heating temperature will affect the extension and shape maintenance time of the steel. If the heating temperature is too high and the melting degree of the steel is too high, it will be very difficult to shape the steel, which is not only difficult to shape, but also the cooling time will be longer to slow down the rate of rolling. If the heating temperature is too low, the steel is not easy to melt, and it is difficult to carry out the next step of processing and shaping. Especially for the hot rolled plate, the thickness of the plate itself will affect the cooling time, controlling the appropriate heating temperature can ensure the thickness and reduce the cooling time and speed up the hot rolling rate.
Second, the pressure size. The size of the pressure will affect the thickness of the steel plate, the pressure is large, the steel plate will be thinner, the pressure is small, the steel plate will be thicker, when rolling the pressure should be carefully controlled to get the appropriate thickness of the steel plate. Just like rolling wrappers, the wrappers constantly change the thickness under the pressure of the rolling pin until the appropriate size and thickness. If the pressure of the rolling pin is too large, the wrappers are too thin to break, and if the wrappers are too thick, it does not meet the standard of making dumplings. Therefore, if the pressure is too large when steel rolling, the steel plate may be broken. If the pressure is too small, the thickness of the steel plate may not meet the standard.
Third, steel rolling standards. Different customers have different requirements on the size, thickness and even shape of the steel plate. When rolling steel, we should pay attention to the setting of the size and meet the customer standards. If the thickness or length of the steel plate is inconsistent with the requirements of the user, it is necessary to reinvent it, which will not only waste time, but also waste materials.
For cold rolling rolling, there are mainly the following technical requirements:
First, to remove the oxide film. Before the steel cold rolling, must first remove the oxide film, otherwise unable to the next step of production, removal of the oxide film used to be carefully selected, to ensure the normal production, the commonly used items is hydrochloric acid, because the appropriate hydrochloric acid concentration and its unique properties can ensure that it remove the oxide film at the same time will not produce excess compounds, affect the product quality or produce excessive corrosion of steel, cause environmental impact.
Second, rolling a thin steel strip. No matter what the finished product required by the customer is, the thickness of the steel strip should be modified first. If the customer only wants the ordinary cold-rolled plate, then thin the steel plate and then make the production according to the shape required by the customer. If the customer wants to coat the coating plate, but also to use other processes to coat the steel plate, to carry out the next production operations.
Third, the coating process. The gold plating is different, the characteristics of the product are also different, if the use of different pigments for coating can also get different colors of coated steel plate. According to the use of the product, different coating process can be used, such as the production of cans, aluminum plate can be used; if it is used to generate electricity, silicon steel plate can be used.
1.2 Automatic steel rolling technology
At present, automatic steel rolling technology is widely used in steel rolling production in China, and the demand for various steel in China is very large. In construction, a large amount of steel and steel is needed to build the base for the frame; in society, infrastructure and playground are built using steel; in the family, many metal materials of household appliances are mostly made of steel. A large number of demand has put forward high requirements for the production of steel, and the speed of steel production must be able to meet the speed of its use.
Before, China's steel rolling technology can not meet the use demand, a large number of steel need to be imported from abroad, one of the reasons is insufficient, the demand for steel is large, but China's steel rolling production speed is slow, can not meet a large number of use demand; another reason is the shortage, China's demand for steel rolling products is not some basic steel plate, in electrical appliances, food and other aspects of various kinds of steel rolling products, but China at that time without corresponding technical conditions, can not produce these products, have to import from abroad. So not only the cost is high, and the development will be limited, but at present our country has mastered enough rolling technology, can meet all kinds of production requirements, and automatic rolling technology has beyond other countries, far ahead in the international, both quantity and type, are able to supply the use of our national.
1.3 Key points of automatic steel rolling technology
First of all, the technical talent. In order for the automatic rolling steel technology to obtain a broader development prospect, we must have advanced technical personnel, able to continuously improve and perfect the automatic steel rolling technology, so that it can meet the current social needs, and constantly develop new products to drive the progress of production, life and science and technology. A good technical personnel can not only raise the automatic steel rolling technology to a new level, but also drive the development of other industries, for example, if technical personnel produce a more rapid conductivity of steel, can drive the development of electrical appliances production industry, because most electrical appliances production is inseparable from steel; if technical personnel produce a higher reuse utilization rate of steel, then has a very important impact on the environment and the development of the enterprise, higher reuse rate of steel can reduce the cost of enterprise production, can reduce the pollution to the environment.
Secondly, exchange and learn. Continuous communication and learning can constantly improve themselves, in the development of automatic steel rolling technology, can not be behind closed doors, to go out for technical exchange, find the shortcomings of technology, and constantly improve.
In a word, when ensuring that the automatic rolling technology can meet the current production requirements, it is necessary to constantly explore and learn, because the society is in continuous progress and development, will have higher requirements for the automatic rolling technology, continuous progress can ensure that not be eliminated by The Times.
1.4 The important role of automatic steel rolling technology in steel rolling production
First, ensure the quality of rolling. Automatic steel rolling technology has unified standards and specifications in the production of products, and the steel rolling products produced by it will have smaller errors, which can ensure the size and quality of the rolling steel. For example, customers need to have 1m length, 0.5m width and 3cm thickness of 100 steel plates. Through automatic steel rolling technology, the size can be ensured that each steel plate is "1m length, 0.5m width and 3cm thickness". Even if there is an error, the error range can also be controlled to the point of the naked eye.
Secondly, to ensure the production rate. Automatic steel rolling can produce more products in a shorter period of time, increasing production rates.
In addition, the automatic steel rolling technology can also ensure the safety problems in the steel rolling production and reduce the safety risks. Because in the process of rolling production, need to use high temperature for melting steel, and a large number of volume, quality is exaggerated material, a little careless will pose a threat to personal safety, and automatic rolling technology to a large extent to avoid some artificial participation in operation, can make the staff in safety for rolling production operation, prevent direct contact with the risk factors.
2. Development and application of automatic steel rolling technology in steel rolling production
2.1 Process comparison of automatic control and manual operation
First of all, automatic control needs less labor, it needs manual jobs, only program setting, machine maintenance, production supervision, these positions only need a few people can be competent, can save a lot of labor costs. And manual operation requires more than ten of the manual, each steel plate and each program need to be manual, not only high cost, but also low efficiency.
Secondly, the products produced by automatic control will be more standard than the products produced by manual operation. Both product quality and product size are levels that cannot be reached by manual operation. In the automatic control, steel rolling is produced by the machine, the material ratio and size of the products produced are fixed, and more "identical" products can be produced, but the products produced by manual operation cannot do this.
Also, automatic control is more productive than manual operation. If the same 10,000 plates are required, automatic control may only take 1h, but manual operation may take 1 week, 1 month or even more. Automatic control has many advantages that cannot be surpassed by manual operation, but manual operation also has the characteristics that automatic control cannot match. The products produced by automatic production are mainly used in the production requirements of large quantity and fixed style. If the number of steel rolling products to be produced is small and large, then automatic control is not as good as manual operation, because manual operation can meet more style needs of customers. If the customer requests a production of a sunflower style rolled steel plate, using automatic control to produce a fuss, the value of the product is less than the cost of the machine operation in the production process.
2.2 Process control system and basic automation function allocation
In the process of automatic steel rolling production, although the production can be automated, the premise of automatic production is the perfect setting of the process control system, and the rigorous production process must be set up to ensure the normal production. When setting the process control system, ensure the correct production sequence; then check the system to find the possible problems and solve them; finally, upgrade the system to improve the system. In addition, attention should also be paid to the distribution of basic automation functions, and cannot be taken lightly because of the characteristics of its automation.
3. Conclusion
The development of automatic steel rolling technology can improve the speed of steel rolling production and ensure the production quality, which not only has a great significance to the steel rolling production, but also has a very important impact on other industries that use steel for construction.
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15358968703