Process analysis and implementation key points of using medium frequency forging heating furnace for heat treatment of rollers

Rollers are the most commonly used slender parts in textile machinery. They are the most easily deformed and difficult to heat treat during the machinery manufacturing process. The function of the roller is to pull and feed the yarn sliver. Therefore, production usually requires it to have high hardness, sufficient torsional and bending strength, and good cutting processability. In order to meet these working requirements of rollers, many manufacturers use medium frequency forging heating furnaces to heat treat them, and the results are very good.

The embossed roller section of the spinning machine roller is required to have high hardness and good wear resistance. The remaining shaft diameter sections have no specific requirements for hardness. Since the length-to-diameter ratio of the part is large, this type of slender symmetrical shaft is For parts, deformation after heat treatment is inevitable. However, by using a medium frequency forging heating furnace for quenching, the hardening and deformation of the roller segments can be achieved to meet the requirements.

In order to ensure that the roller obtains the required performance after heat treatment, the material should be quenched and tempered or normalized before medium-frequency quenching. The purpose is to make the matrix have good comprehensive mechanical properties (good coordination of strength, toughness, etc.) and give it good surface performance. After quenching or chemical heat treatment, it is wear-resistant and corrosion-resistant, and can adapt to the needs of torsion and bending.

When the spinning frame roller is undergoing medium frequency quenching, the roller should be rotated and continuously heated and cooled. The water temperature should be below 30°C and the pressure should be 0.1-0.3MPa. The water spray holes on the sensor should be evenly distributed to ensure hardness and deformation after quenching. The quantity meets the technical requirements.

Using a medium frequency forging heating furnace to heat treat the rollers not only avoids the deformation and crack defects caused by traditional equipment, but also greatly improves the heat treatment effect and greatly increases the service life. What’s even better is that this process is suitable for large-scale production in large quantities and can significantly improve production efficiency.