Six Mistakes to Avoid when Using Tempering Glass Furnaces

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  • Date:2021/05/06

Glass tempering furnace works a bit like cooking – you'll have the newest and greatest equipment in your kitchen, but the food can still end up bad. To be an excellent cook takes far more than having the simplest equipment – it’s about understanding the processes. you've got to understand the ingredients and techniques also because the equipment.


Automation makes things a touch easier. this is often what we attempt to do with our glass tempering furnaces – to automate a number of the processes to realize more consistent quality and to minimise operational mistakes. Nowadays, glass tempering furnaces come equipped with sensors, allowing the operator to tug data and measurements.


In the end of the day , automation will make operating a furnace easier. But, glass processors got to do many things correctly to succeed in high-quality tempered glass.


I have toured the planet , seen many glass processing factories and helped processors take subsequent step in their production.


Below, I recall common mistakes I even have witnessed within the tempering process.


Not learning the fundamentals


To me, the glass tempering furnace isn't a magic recorder . The behaviour of glass is comparatively simple to know – if you don’t heat or cool the glass uniformly, it'll bend. If you warmth it an excessive amount of , it'll have waves.


These are the fundamentals that ought to be clear to anyone operating a processing machine. Manufacturers often offer their clients the essential documentation and training packages that clearly state the elemental facts. But, confirm you decide on a partner who also can train and instruct you and your employees.


Having a heating time that's too long


The percentage of glass breakage has been a tempering line operator’s most vital key performance indicator for years. For this reason, operators naturally do everything they will to decrease the waste.


One way to stop breakage is to extend the heating time. This will, unfortunately, have a negative impact on the glass quality. the upper the glass temperature is, the more severe the standard .


Note that very often operators think that poor cutting or grinding quality come from having a temperature that's too low within the tempering process. during this case, the operator is correcting the incorrect problem and, as a result, has poor quality glass with poor edge work.


Running thick and thin glass an identical way


Avoid putting a thick piece of glass into a really hot furnace – you don’t want to listen to the boom. that's the noise of a thick glass breaking within the glass tempering furnace. during this case, the breakage is caused by heat shock. As a result, the furnace must be cooled, and therefore the broken glass removed. This process takes about two shifts to finish .


Removing the ghost the incorrect way


Many operators attempt to fix the white haze issue by operating the road to run the glass sad – a standard thanks to describe the direction of the bow of the glass (corners bow up/happy or down/sad) within the furnace. In other words, the corners of the glass touch the rollers but the centre doesn't .


This does eliminate the white haze, also referred to as ghosting. But, running thick glass sad will harm the rollers. The ghosting can chip some glass from the edges or cause markings to the rollers. As a result, the subsequent loads will have problems and therefore the thin glasses won't stay stable.


Here’s my rule of thumb – don’t exaggerate the sadness of the glass.


It seems that as we become easier with our work, the more mistakes we make, and therefore the more we expect we all know , the more likely it's that our choices lead us down the incorrect path. That’s why even experts should keep the fundamentals in mind.





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