How to Adjust the Cutting Speed of Slitting Line?
In recent years, with the increasing demand for precision and efficiency in the metal processing industry, the optimization of cutting speed of longitudinal cutters, as the core equipment for sheet metal cutting, has become a focus of attention for enterprises. Reasonably adjusting the cutting speed can not only improve product quality, but also reduce energy consumption and production costs.
In recent years, with the increasing demand for precision and efficiency in the metal processing industry, the optimization of cutting speed of longitudinal cutters, as the core equipment for sheet metal cutting, has become a focus of attention for enterprises. Reasonably adjusting the cutting speed can not only improve product quality, but also reduce energy consumption and production costs.
Core parameters for speed adjustment of slitting machine
1. Precise control of transmission system
The driving motor (usually an AC variable frequency motor) of the slitting machine needs to work in conjunction with the reduction gearbox. By adjusting the speed of the motor or the transmission ratio of the gearbox, the linear speed of the roller can be directly changed. Modern equipment often uses frequency converters to achieve stepless speed regulation, with a speed range of 1:10 or more, meeting the cutting needs of materials of different thicknesses.
2. Intelligent application of frequency converter
Use PLC or dedicated controller to adjust the output frequency of the frequency converter, achieving smooth start stop and speed change of the equipment. For example, when cutting thin plates below 0.5mm, it is recommended to control the speed at 80-120 meters per minute; When dealing with thick plates of 5mm or more, the speed should be reduced to 20-40 meters per minute to prevent tool overheating.
3. Tool parameter matching
The cutting edge angle, material (such as tungsten steel or ceramic coating), and degree of wear of the tool directly affect the upper limit of speed. According to industry tests, sharp cutting tools can increase cutting speed by 15% -25% compared to worn tools without affecting the quality of the cross-section.
Collaborative optimization in dynamic regulation
1. Adaptation of material characteristics
Different metal materials need to be matched with different speeds: aluminum cutting speed can reach 150 meters per minute, while stainless steel needs to be reduced to below 60 meters per minute. At the same time, it is necessary to monitor the hardness and ductility parameters of the steel plate and automatically adjust the speed curve.
2. Tension closed-loop control
Real time adjustment of uncoiling/rewinding tension is achieved using magnetic powder clutch or servo motor. Maintain tension fluctuation<±2% during high-speed cutting to avoid material deviation. A certain automotive parts company reduced the scrap rate from 3% to 0.8% by installing tension sensors.
3. Cooling and lubrication management
During high-speed cutting, it is necessary to synchronously increase the coolant injection pressure (recommended 0.4-0.6MPa) and use micro lubrication (MQL) technology to reduce the temperature of the cutter roll and minimize the risk of thermal deformation.
The optimization of the cutting speed of a slitting machine is a systematic engineering that requires dynamic balancing based on equipment performance, material attributes, and process parameters. With the deep application of intelligent sensing technology and industrial big data, the industry is shifting from experience driven to data-driven precision control, continuously promoting the metal processing industry to move towards efficiency and green direction.