Seismic steel ball bearing LRB usually made of natural rubber, rubber hardness of 45 to 50 degrees ball bearings, laminated rubber bearing than the average to be softer. Mainly because LRB to adapt to the earthquake, (350%) there is a greater need for bearing shear deformation. The chemical composition of natural rubber, request content of the polymer is above 50%, the content of carbon black content of 10% to 35%, ash content of 10% or less. Seismic analysis showed that the ball bearing steel bridge for damping effect, significantly better than the laminated rubber bearings. Under the same premise, the same seismic waves, using laminated rubber bearing is adopted when the response steel bearing 502% to 70%, while the use of LRB response peak is 50% laminated rubber bearing ~ 45%, steel bearing 25% to 50%, fully embodies the characteristics of seismic damping steel ball bearings and energy dissipation capacity. Using coatings to protect steel structures, steel construction is a method currently the most commonly used. The corrosion resistance of the film is an important reason for this is as a coating polymer film, to varying degrees, can slow the corrosion resistance factor of water, oxygen and ions through the order to play the role of rust and corrosion. In addition, the stability of the coating film corrosive medium, and adhesion and mechanical properties of the substrate corresponding to the anti-corrosion coatings have a significant impact. Steel coating protective effect on the main three, shielding effect, cathodic protection and corrosion inhibition. 1. After a good shielding effect coating construction covering the steel surface, the steel can be effectively isolated from contact with the outside corrosive environment. That universal ball bearing seismic slip selling finished products, coatings prevent atmospheric oxygen, moisture and other corrosive ions on steel corrosion. All coatings have a fundamental role in shielding. Increase in bearing steel ball bearings with a choice of materials earthquake raised steel ball bearings with seismic bearings should have the following characteristics, steel bearing liquid through a hydraulic pump implanted seismic methods are steel ball bearing slide universal bottom seismic ball bearing low-cost direct sales, lifting pressure plate, is bearing elevated pressure injection of 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 rate; seismic steel ball bearings should have good process performance; the pressure injection process rubber has good mobility, pressure injection after completion of natural rubber should be cured within 1 to 2 hours; reasonable pressure injection rubber prices to reduce the increase in cost. At present, foreign pressure injection of silicone rubber as the material. Silicone rubber is a polymer organic elastic condensation from various silicone. Silicone rubber due to the special structure of the molecule structure, which has a series of very excellent performance, is a hardy both high temperature synthetic rubber, operating temperature up to -100 ℃ -300 ℃, and has very good resistance to ozone aging, heat aging and weather-resistant properties. But the tensile strength of the silicone rubber is only 2 ~ 10Mpa, elongation at break of 150 to 200 percent rate for seismic universal rolling ball bearing quality standards, and the price is very expensive silicone rubber, natural rubber and synthetic rubber around the 10 to 27-fold, 4.5-fold for the urethane rubber, it is necessary to choose a filling meet the requirements of high strength, relatively cheap alternative to rubber, the comparison may consider polyurethane 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 categories. Polyurethane has high mechanical strength, tensile strength up to 70Mpa, elongation at break of up to 500% to 1000% excellent aging resistance, excellent ozone resistance, excellent wear resistance, and the price is only silicon Rubber 1/4 to 1/5 ball bearing, ball bearing universal rolling seismic quality standards, the company offers a wide rubber Run-Run from Hengshui Rubber Co. project. Hengshui Guangrun Engineering Rubber Co. (www.grgcxj.cn) (www.grgcxj.cn) is specialized in the "seismic steel ball bearings, spherical steel unidirectional bidirectional slide bearings, ball joints fixed elastic damping bearings," the enterprises, companies adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr. Wang. You can also access (www.grgcxj.cn/supply_details_45846645.html), for more information about the company.