The furnace does not contact the surface of the glass element only contacts the lower surface of ceramic track. Track quartz ceramic as the main material, auxiliary materials made by adding, 12mm tempered glass, coefficient of thermal expansion is almost zero, the thermal conductivity is very low, the contact area between the track and the glass is small, the heat conduction in the whole process is not essential fashion, glass factory, the heat absorbed by the glass in a hot furnace less than 10% of the heat conduction. Glass is typically brittle material, due to various reasons, the glass surface covered with micro-cracks. When the glass surface by the tensile stress, micro-cracks began to expand, Linyi glass, and finally from the surface rupture, causing damage to the glass. If we can eliminate the influence of these micro-cracks, the strength of the glass can be greatly improved. Is generally believed that the number of micro-cracks annealed glass surface more disorderly distribution, and micro-cracks in the glass surface of steel stress, some bridge, forcing the microcracks orientation. The actual strength of annealed glass microcracks due to uncertainty there is often considerable discrete, but the actual strength of tempered glass is relatively stable. Linyi glass, glass Yaohui quality assurance, glass doors provided by Jinan Glass Co., Ltd. Yaohui. Linyi glass, glass Yaohui quality assurance, tempered glass door Jinan Yaohui Glass Co. (www.jyhhc.com/) this year introduced a new upgrade, the above picture is for reference only, please call the contact or pictures on this page phone, for the latest information, contact: Liang Jingli.