1. Quenching and Tempering
Quenching is to make material heated, quenching, tempering, heat material has strong toughness and hardness.Quenching can also increase service life and reduce distortion.Quenched hardness after quenching and tempering: HB 260
2. Setting Treatment
The setting is to heat the screw that has been rough machining. The temperature is higher than the temperature of the atmosphere treatment to make the screw not deform or bend while atmosphere processing.
3. Nitrogen treatment
Hardness after nitridation:HVk900
Nitriding depth: 0.5-0.6mm
The hardness screw and barrel after gasification treatment can reach above HV900, and the nitrided screws and barrels have excellent wear resistance, fatigue resistance, corrosion resistance and high temperature resistance.
Screw barrel hardness after nitridation: HVk900
Screw barrel Nitriding depth: 0.5-0.6mm