A white mist or haze appearing on tempered glass is a common quality issue that can result from various factors during the tempering process. It is often due to contamination, improper heating, or cooling issues. Here’s how to identify the cause and fix it.
Glass Tempering White Mist Solutions
1. Causes of White Mist on Tempered Glass
A. Contamination Before Heating
Dirty Glass Surface: Residual oils, dirt, or cleaning chemicals can burn onto the glass surface during heating.
Improper Washing: Insufficient rinsing in the washing process may leave detergent or hard water residues.
B. Furnace Conditions
Uneven Heating: Temperature inconsistencies in the heating chamber can cause uneven surface stress, leading to haze.
Excessive Heating: Overheating can burn contaminants or create visible distortions.
C. Cooling (Quenching) Issues
Uneven Air Flow: Non-uniform cooling due to blocked or misaligned air nozzles can leave areas of different stress levels, causing haze.
Improper Quenching Pressure: Low or excessively high air pressure during cooling can affect the surface finish.
D. Poor Quality Glass
Low-Quality Raw Glass: Inherent impurities in the glass may become visible after tempering.
2. Solutions to Fix White Mist
A. Pre-Heating Cleaning Process
Improve Washing:
Use a high-quality glass washing machine with effective cleaning and rinsing stages.
Use deionized water to prevent hard water stains.
Inspect for Contaminants:
Ensure all glass is inspected for visible dirt, grease, or residues before loading.
Drying:
Ensure glass is completely dried to avoid water spots entering the furnace.
B. Furnace Adjustments
Temperature Control:
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More detailed information about the glass tempering furnace white mist problem can be clicked to visit: https://www.shencglass.com/en/a/news/glass-tempered-white-mist.html
