Rolling of strip steel with accelerated speed
The rolling of strip steel is a process that has been used in the steel industry for hundreds of years. It is the process of reducing the thickness of a sheet of metal with the use of rollers, using different rollers to achieve different levels of thickness reduction. Rolling of strip steel with accelerated speed is a process that is becoming increasingly popular in the steel industry as technology advances and allows more efficient and precise rolling of the strip steel.
The accelerated speed rolling process uses a combination of chilled rolls, hot rolls, and intermediate rolls. The chill rolls have a much higher hardness than the hot or intermediate rolls, which allows for a much greater amount of reduction in the strip steel thickness. The hot and intermediate rolls, however, are softer and are able to provide further thickness reduction.
The cold rolls are heated before the strip steel is passed between them. This allows for a higher reduction rate as the cold rolls are able to provide greater grip on the strip steel. Cold rolling also uses lubrication to reduce friction, which allows for higher reduction rates and product uniformity. This process is appropriate when rolling precipitation hardening steels because they require a very slow, controlled cooling process to allow proper hardening.
The hot rolls are heated to higher temperatures and are used to reduce the strip steel thickness further. The lubrication that is used with the cold and hot rolls affects the friction and wear in the rollers and helps to reduce distortion of the strip steel. Hot rolling is often the most economical and efficient way of producing a high-quality finished strip.
Intermediate rolls are used for further thickness reduction and provide greater control over strip steel temperature variations. This often makes strip steel that has been produced by intermediate rolls less prone to warping and distortion during the manufacturing process.
Overall, rolling of strip steel with accelerated speeds has significant advantages over traditional methods of strip steel rolling. Higher reduction rates and improved product uniformity are made possible with the use of the accelerated speed rolling process. By incorporating chill, hot, and intermediate rolls, it is possible to achieve higher levels of accuracy and control. Advantages of this process include decreased energy consumption and improved productivity, which can lead to an overall reduction in production costs.
