Pot bearing, antifriction coating and method

Abstract

The invention relates to an antifriction coating of a pot bearing in a bridge construction and a method. The dry film thickness of the antifriction coating is 50-250 mu m, the flashing point of the coating is 110 DEG C, and the specific gravity is 1200 + / - 60 g / L; and the antifriction coating comprises components in percentage by weight as follows: 1-6% of molybdenum disulfide, 10-16% of graphite, 1-4% of graphite fluoride, 2-9% of tungsten disulfide, 0-3% of molybdenum diselenide, 1-3% of nano-diamond, 1-15% of silicon nitride, 2-10% of aluminum oxide, 0-3% of silicon dioxide, 0-2% of antimonous oxide, 3-15% of silicon carbide, 0-1.5% of a carbon nano tube, 10-16% of polyurethane resin, 12-30% of epoxy resin, 6-10% of acrylic resin and 0-6% of a powder surface treating agent. According to the antifriction coating and the method, the process is simple, the cost is lower, performance indexes are all superior to those of a conventional modified polyfluortetraethylene plate and an ultra-high molecular weight polyethylene plate, and the pot bearing coated with the coating has high self-lubricating performance and high wear-resisting performance.

Description

[technical field] [0001] The invention relates to an anti-friction coating and a method for pot bearings in bridge construction, in particular to an anti-friction coating and a spraying method between road and railway bridge bearing structures and their contact surfaces bearing vertical loads. [Background technique] [0002] The working principle of the pot bearing of the road and railway bridge: the ordinary plate rubber bearing is made of multi-layer rubber sheets and stiffened steel plates, and the steel plates are all wrapped in rubber elastic materials to form rubber bearings. The plate bearing has sufficient vertical stiffness to bear the vertical load, can reliably transmit the reaction force of the superstructure to the pier abutment, has good elasticity to adapt to the rotation of the beam end; and has a large shear deformation to meet the Horizontal displacement of the superstructure. The PTFE plate rubber bearing is formed by bonding a layer of 7mm thick PTFE pla...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the anti-friction plate of the existing highway and railway bridge pot bearing is expensive, and the sliding plate is easy to shift and cause accidents during use, a kind of pot bearing with excellent performance for road and railway bridge is provided. Anti-friction coating for seat: