Clay insulation bricks | brick insulation tiles | clay brick insulation provided by shangzhuang Refractories. Zhengzhou City shangzhuang Refractories Co. (www.yntjj.com.cn) is Zhengzhou quality certification business alliance with shangzhuang refractory and other brands, has a good reputation, integrity-based, service-oriented "business alliance click on the page Support "icon, we will be happy to help you! Refractories Co., Ltd., Zhengzhou City shangzhuang tell you brick has a residual swell and heavy firing shrinkage performance, general brick linear expansion and contraction song money as shown below. 800 degrees before presenting linear expansion, later began to shrink, to 1200 degrees shrink up to 1%. After the start suddenly swell clay insulating bricks, up 4% to 1,300 degrees, which is due to be closed in the brick surface porosity clay insulating bricks, because gas expansion caused by swelling, softening the surface of the gas discharge after showing great products contraction. Shangzhuang Refractories Co., Ltd., Zhengzhou City, to tell you good thermal shock resistance of clay brick, ordinary brick at 1100 ℃ water circulation of more than 10 times, up to 50-100 times more clinker brick or higher. The main reason for good thermal shock resistance of clay brick is mullite and the entire product line expansion coefficient (average 4.5X10-6 ~ 5.8X10-6 ℃ -1), and relatively homogeneous clay insulating bricks, the process does not occur Volume crystal transition caused by the change. And there are many cracks between clinker particles, can buffer stress. Increase the amount of clinker and particulate clay insulating bricks reasonable gradation, increase the molding pressure, due to lower termination firing temperature, increasing the number of mullite crystals and reduce the mass fraction of glass phase can improve product thermal shock resistance