Continuous Rolling Small Profile Finishing Process

Rolling small-size billet and precision finishing technology

Small-size billet is a kind of medium and small-size billet during the hot and cold rolling process. The materials that can be processed include steel, aluminum, iron, plastic and alloys. The general size is mainly within 12.7mm * 12.7mm and the length is no more than 8 meters. Small-size billets are mainly used for making small and thin parts for automobiles, appliances and other industries.

Rolling small-size billet not only has the requirement of large precision but also the requirement of roll forming pattern. According to the different characteristics of forming materials, different rolling processes are adopted. For some materials with low hardness, carbon steel is often used for roll forming, while for some materials with high hardness, such as aluminum, copper, or stainless steel materials, roller forming, or so-called extreme rolling, is usually adopted for small-size billet processing.

1st step: Selection of suitable roll forming technology

For small-size billet, the requirement of precision and roller forming is very important. In order to ensure the quality of the final product, it is necessary to use appropriate roller forming technology. According to the material and forming shape, the process engineer should select suitable roller forming angle and pass number, so as to ensure the effectiveness of forming, and then select the type of roller needed. The selection must be based on the size of the profile after roller forming and the precision of the product.

2nd step: Cold rolling technology

Cold rolling is an important process in producing small-size billet. It is mainly used to make steel thin and have the ability to roll fine products from thin sheets. The thin sheet should be preheated since the low temperature may reduce the ability of rolling if the heated temperature is too low. During the cold rolling process, lubricants are needed to reduce the force of rolling and decrease the probability of surface defect. Generally, the cold rolling speed should be kept as low as possible, about 15-20m/min.

3rd step: Heat rolling technology

Heat rolling is an important process for materials with high hardness, such as aluminum and stainless steel. Through heat rolling, the plasticity and ductility of the materials can be improved and the products can be obtained with high accuracy. During the heat rolling process, the surface temperature of the material should be kept above the recrystallization temperature of the material. When the temperature is too high, it is easy to cause overheating and cracks.

4th step: Precision finishing technology

Precision finishing is the final process for small-size billet to obtain qualified products. After precision finishing, the accuracy of the small-size billet can be improved and deformed nodes can be eliminated. Precision finishing technology of small-size billet generally includes grinding, boring, polishing and so on. According to the size and precision requirements of the workpiece, the machinist should select reasonable process parameters.

In summary, there are several steps to finish the rolling small-size billet with precision. Selection of suitable rolling technology is the first step, followed by cold rolling and heat rolling technology, and precision finishing is the last step. The entire process must be strictly controlled in order to ensure the quality of the small-size billet.

Continuous rolling of small-scale material is a kind of metalworking technique which is widely used in the manufacturing industry. The process is much different than regular steel rolling and involves a gradual reduction of the steels thickness.

Continuous rolling is an incremental process that works by continuously reducing the thickness of the material. This is done by conditioning the material’s surface so it can slide more easily along the steel rolls. As the material passes through the rollers, the pressure from the rollers causes small indentations which serve to reduce the material’s thickness.

The material must go through several cycles in order to achieve the desired thickness. During this process, it passes through several heated steel rollers which apply pressure and heat to the material. The degree of heat depends on the type of material being rolled and the desired end result.

After the material has gone through the rolling process, it is then allowed to cool before being cut, shaped and finished. The length of the material depends on the end process. For instance, steel sheets are typically cut into long strips while bars are commonly cut into shorter lengths.

In conclusion, continuous rolling of small-scale material is a process that requires high precision and accuracy. It requires a specific combination of heat and pressure to reduce the material’s thickness in an efficient and cost-effective manner. It is an important part of modern industrial manufacturing and is used for a wide range of applications including steel sheets, pipes, bars, and more.