Automotive Glass Manufacturing Process

Automotive Glass Manufacturing Process


your car windows started like this sand limestone and dolomite to stabilize the chemical reaction so – to lower the melting temperature and a broken glass or colored to help the melting the continuous ribbon of molten glass is floated on liquid tin before being cut into flat pieces a computer-controlled tungsten carbide wheel scores the required shape of your car window and a flame creates thermal stress to crack it along the score the edges are then ground and washed this particular glass is set to be toughened by being floated on hot gas it’s toughened by Keith an ordinary window glass – around six hundred and thirty degrees centigrade and chilling very rapidly which puts a surface compressive stress into the glass making it very strong – massive impact that’s obviously a benefit the stress is built into the glass by that process if it is released by the layer being penetrated by a sharp object causes the glass to shatter into tiny fragments causing not too much in not too much injury laminated glass on the other hand is ordinary window glass but it is given its safety by the incorporation of an inter layer these days of PV being or polyvinyl butyl which is a very stretchy material so that if you do have the misfortune to hit it with your hand acts as a safety net and stops you from being ejected from the car less important now of course because seatbelt legislation and airbags do tend to stop people head in the windscreens anyway glass to make laminated windscreen is much thinner than your other car glass alternate glasses are cut as inners and outers one slightly bigger than the other to compensate for the difference in curvature when stuck together with the plastic sandwich glasses are curved as a pair using a SAG bending process we’re at 600 degrees Celsius they Bend under their own weight into a mold the thin plastic interlayer is added in between the two pieces of glass and the package is squeezed together before being baked in a high-pressure furnace or autoclave for one and a half hours each panel is then checked for quality under special lighting conditions but maybe you don’t really care how your car glass is made you just want to know what they can do for you we’ve got this set up here but we’ve actually used it as a demonstration to go out to two car manufacturers and shoulder stylists and engineers of the future what we’ve actually got is a windscreen first of all that’s got the heated windscreen in it secondly at the top of the glass you’ll see that there is a raindrop sensor this means that during rainy conditions the the windscreen wipers will automatically activate and we can set that to a number of levels for intermittent wipe or continuous etc also in the windscreen looking from the inside of the car you can see a head-up display obviously this is something very much for the future but you could see a number of your instrument controls projected onto the windscreen as you’re actually driving so very simply the the demonstration here shows the speed the car is going that system has also been used extensively in a European research project to actually drive a car in in night conditions or in very foggy conditions and we’ve actually done tests and trials of actually driving a Jaguar car in complete darkness for the police we were no headlights and no headlights on at all just completely see that as an infrared it’s an infrared system that displays anybody’s head onto the head-up display in the car it’s a very very impressive system obviously again excellent it’s not going to be for the general public in the foreseeable future but it could be used in the military or on the the police type activities moving round the car we’ve got then laminated Tsai glazing here we also show that you can port heated wire elements too deeply missed or defrost the side glasses also on the same side of car we’ve got the double glazing this again is used in many of the top arranged vehicles that gives extra noise and heat performance around the back of the car is various examples of antenna systems these are printed circuits onto the glass for either telephone or even TV and tennis systems but color glass need not just be practical it can be beautiful as well xxx our consultants to the young car designers at London’s Royal College of Art yes we’ve been involved with Royal College of Art now for the last nine years our main purpose is to help with the innovative designs of glass styling and help students actually understand what can be done or can’t we don’t with glass and also to build long-term relationships with the potential scalice of the future this year’s winner of the Design Awards competition was Matthew Bevan and a two-seater sports leisure vehicle his astonishing College made 3d animation of his vehicle rivals the quality of some top manufacturers you you


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