How To Clean Hazy Glass Windows

Tempered glass customers ordinarily accept certain tolerances for tempered baloney and other defects, like white haze. I heard a while agone that this phenomenon is also beingness called "ghosting". Ghosting is a funnily accurate description, since if you lot don't know exactly what must be done to avoid the defect – information technology really feels as if in that location's a ghost in the furnace causing it.

Accept you had a ghost in your tempered glass?

So what is white brume? The white hazy fabric can be dust, roller residuals or actual mechanical deformations caused by a mechanical pressure that is too strong between the glass and the rollers. White haze can be caused by multiple reasons and tin can occur in several dissimilar forms. Perhaps, the most common type of white haze is a vertical strip in the center of the glass. White haze can occur also almost the ends, on the corners of the glass or all over the glass with vague hazy areas or some repetitive stripes or marks. In that location are many types of white haze that can occur, and all of those can be solved with a different medicine.

White haze – marks on the drinking glass

White haze – marks on the glass

In this article, nosotros'll go through a cheque-listing that you can use as a basis for your systematic problem-solving procedure to eliminate the white haze defect.

There any many types of white haze that tin can occur and all of those are solved with a different medicine. Every bit with any defect, a systematic arroyo to problem solving is extremely important when tackling the white haze defect.

Call up also to download our presentation that can help overcome your other quality issues in tempering process.

Pace 1: Define and describe the problem

In which part of the glass / loading is the brume visible?
Are the white marks always in the aforementioned position?
Is the pattern repetitive?
Determine the scratches, length, notches, imprints, size and color of the defect. Use a magnifying drinking glass, if needed.
On which glass thicknesses / types is the defect visible?

Step 2: Clarify the changes in the surrounding surround

When did this start?
What changes happened in the surrounding surroundings?
Is there a grinding station about (the possibility of dust flying into the furnace)?

Step 3: Use process data and analytics

Is there a correlation between the marks and the scanner motion-picture show?
How does the Quality Monitoring Organization data expect like? Are there whatever irrationalities in the process data?
If SO₂ has been used, how much and when?

Step 4: Analyze possible mechanical sources

Ceramic rollers
- Surface roughness?
- Dust?
- Solid particles on the roller surface?
- Cracked, brittle surface?
- Roller leveling?
Insulation
- Is insulation cleaved?
- Are the furnace doors working?
General cleanness
- Dust on the flooring and lesser heaters?
- Grit or particles in or on acme of the air convection channels?
Functionality of
- Heaters
- Thermocouples
- Convection (pneumatic air organization or convection blowers)
Drive organization
- Is the drive speed consistent?
- Does the roller bearing work well?
- Are the drive belts in good status?

Step 5: Corrective deportment

If the problem is in the process parameters, you will be able to see the correlation between the process analytics and the white haze marks. By correcting the process parameters to run the drinking glass flatter in the furnace, yous will exist able to fix the defect. The nearly common white brume problem is the haze in the center of the glass, and it occurs exactly due to the wrong parameters. This is corrected via a parameter alter by decreasing the roller temperatures and/or increasing the acme convection. Note! Also much of the top convection creates a different kind of haze issue.
If the problem is mechanical, Step 4 volition guide y'all to your corrective actions.

A systematic approach to problem solving will assistance you get rid of the white haze effect. As mentioned in the beginning of this post, in that location are a number of different forms in which white haze presents itself. In the coming posts, we will encompass how to solve each blazon of white brume problem point past point.