Currently seismic steel ball bearings in China's construction industry has begun to gradually applied, and proceeded to develop appropriate industry standards: Building isolator "(Draft) The standard for building vertical and horizontal isolation bearing mechanical properties. Durability (aging, creep, fatigue performance), fire resistance and have all the performance requirements and determination made specific provisions. durability, including aging, creep and fatigue properties. seismic steel ball bearing durability requirements are placed on the stand with a wood fire and diesel fuel, the combustion removed after one hour free ball bearing hinge design, cooled to room temperature, the stress test its limits with the same batch of vertical ultimate bearing pressure rate of change of the stress of not more than 30% of the seismic isolation bearing steel ball relative performance refers to the vertical stress, deformation, load levels of stiffness and equivalent viscous damping ratio frequency and temperature conditions. Our extensive use of seismic ball this year steel bearings for seismic bearings, spherical steel bearings called seismic, seismic ratio can also reach 0.15. seismic steel ball bearing steel chemical composition of commonly used, the polymer content of more than 40% , reinforcing agents using carbon black and silica, the content in ash content than the 10% to 45% of a reinforcing agent is 10% or less. height pedestals by selecting seismic steel ball bearing material with adjustable height pedestals seismic steel ball bearings should have the following characteristics, bearing steel by liquid injection pump seismic methods are ball bearing at the bottom of the finished steel ball bearing hinge, lifting pressure plate, is bearing elevated pressure injection casting Steel should be automatically fixed, the pressure part of the carrier; should have a certain pressure injection compressive strength and elongation of the cured rubber; seismic steel ball bearings should have good process performance; the pressure injection process, the rubber has good liquidity, after pressure injection is completed, the rubber should naturally cured within 1 to 2 hours; pressure injection rubber prices reasonable hinged truss spherical bearings to reduce the cost of raising the current foreign pressure injection of silicone rubber as a material of silicone rubber. various silicone polycondensation is an organic elastomeric polymer. silicone rubber due to the special structure of the molecule structure, and thus has a series of extremely excellent properties, both heat and cold is a synthetic rubber, the operating temperature can be up to -100 ℃ -300 ℃, and has very good resistance to ozone aging, heat aging and weather-resistant properties. However, tensile strength silicone rubber is only 2 ~ 10Mpa, elongation at break of only 150 to 200 %, and the price is very expensive silicone rubber, about 10 to 27 times that of natural rubber and synthetic rubber, polyurethane rubber 4.5 times, it is necessary to choose a filling meet the requirements of high strength, relatively cheap alternative to rubber, Selection may be considered by urethane rubber. Seismic steel ball bearing according to the different monomers, urethane rubber can be divided into two kinds of polyester and polyether, can be divided according to the processing method of casting, mixing type and a thermoplastic three types of polyurethane rubber with high mechanical strength, tensile strength up to 70Mpa hinged spherical bearings, elongation at break of up to 500% to 1000%, excellent aging resistance, excellent ozone resistance, wear resistance good, and the price is only 1/4 to 1/5 of silicone rubber. steel ball bearing hinge, professional seismic material (certified), ball bearing hinge Guangrun provided by Hengshui Rubber Company. Hengshui Guangrun Engineering Rubber Co. (www.grgcxj.cn) (www.grgcxj.cn) Hebei Hengshui, a leader in site construction materials, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. In Guangrun Rubber Company leadership with the staff warmly welcome all inquiries negotiations to create Guangrun Rubber Company a better future. You can also access (www.grgcxj.cn/supply_details_48821695.html), for more information about the company.