QPQ Complex Salt Bath Treatment

Also, this technology features least distortion, non-pollution and energy-saving. The key to this technology-salt bath ingredient is internationally monopolized by Degussa.

After many years' tests and research, Chengdu Tool Research Institute of MMI(CTRI) has successfully developed a unique salt ingredient, which breaks the technology monopoly of Degussa and features higher non-pollution level.

Technical features

1) Good Wear Resistance and Good anti-fetigue. Test results show that, the wear resistance of the medium-carbon steel by QPQ treatment can be up to 30 times as high as by conventional quenching, 14 times that of lowcarbon steel by carbonizing quenching, and its fatigue strength can improve by 40%.

2) Good Corrosion Resistance
The corrosion resistance of the medium-carbon steel by QPQ treatment can be up to 70 times as high as by hard chrome plating, 35 times by decorative chrome plating.

3) Least Distortion
Work pieces by QPQ treatment feature least distortion. The technology has successfully solved the distortion problem arising from the heat treatment.

4) Replacement of multi-procedures
With substantial improvement in wear- and corrosion- resistance, it can replace multipro-cedures of heat treatment such as quenching (hi-frequency quenching, carbonizing quenching) -tempering- blackening (chrome platiing), there by greatly shortening production cycles and reducing production costs.

5) High non-pollution level, no pollution to environment

Application

l)Suitable Materials
Various kinds of structure steel, tool steel, stainless steel, pure iron andiron-based PM parts

2)Suitable parts
Suitable for the parts of automobile, locomotive, diesel engine, textile machinery, light and chemical machinery, farming rnachinery, machine tool, gear, tools and dies, where high wear- and corrosion resistance is required.