high quality electric chain hoist

First, the selection of special steel production of high-quality materials, advanced heat treatment process.
1, the inner and outer chain plates: 40Cr;
2, pin: 20CrMnMo;
3, the sleeve: 20CrMo;
4, roller: 20CrMo; quenching HB293-365;
Carbon nitriding (0.5mm) quenching HRC55-62;
Carbon nitriding (0.5mm) quenching HRC55-60;
Carbon nitriding (0.5mm) quenching HRC50-55
Second,hand chain hoist net bag automatically flip heat treatment equipment, uniform and thorough case hardening.
III.1, pin and outer chain plates fixed sleeve and inner chain plate fixation effectively reduce wear bearing member.
2, pin and sleeve, roller and sleeve to take a different clearance fit according to material and keep it on the chain wear and pitch elongation.
3, the outer link plate punched into bending structure fixed Douzi convenient, but also reduce the use of space transportation agencies.
Fourth, take Screening and breaking tensile test detection means to fully guarantee the technical requirements.