What is the process of vacuum sherardizing

What is the process of vacuum sherardizing

1. Vacuum sherardizing is to infiltrate zinc atoms into the surface of steel parts to form a zinc-iron alloy layer under vacuum conditions. Therefore, it slows down or avoids oxidation and improves the corrosion resistance and wear resistance of the sherardized parts. This technology is most suitable for processing parts with complex shapes, whether it is screws, inner walls of steel parts or grooves, etc., after sherardizing, the sherardizing layer has a smooth surface, uniform thickness, no wrinkles, and is not easy to peel off.

2. The thickness of the infiltrated layer of vacuum sherardized parts can be controlled within the range of 20-120 microns, which completely solves the problem of poor tolerance matching of hot-dip galvanized fasteners.

3. The vacuum sherardizing is completed in a closed container, so it completely eliminates the pollution of zinc vapor to the atmosphere, and completely ends the history of zinc vapor poisoning and high-temperature zinc liquid splashes from the "blasting" during hot-dip galvanizing. .

4. In environments with serious air pollution, or long-term immersion in salt water (sea water), the corrosion resistance of vacuum sherardizing parts is particularly prominent, and there will be no abnormal phenomena such as peeling and rust spots.

5. The energy-saving effect of the vacuum sherardizing process is significant, because the sherardizing operation is carried out in a heat-insulated and airtight container, so the thermal efficiency is high and it meets the energy-saving requirements.