key words: Elastomeric Bearing Pad, bridge bearing pad, rubber bearing pad, ptfe bearing pad
We are elastomeric bearing pad supplier. How to produce elastomeric bearing pads? what technical parameters are important? And what vertical performance and shearing performance of elastomeric bearing pads are important?
Normally, when we say elastomeric bearing pad, it is reinforced steel laminated bearing pad. The inner structure is rubber layers with steel plates reinforcement.
The rubber bearing pad is produced by embedding, bonding, and vulcanizing multiple layers of natural rubber and thin steel plates. This type of elastomeric bearing pad has sufficient vertical stiffness to withstand vertical loads, it can reliably transmit the pressure of the upper structure to the piers and abutments; It has good elasticity to adapt to the rotation of the beam end.
The production of elastomeric bearing pads, the production should Strictly follow the steps in manufacturing: raw rubber - plastic mixing - mixing - cutting - cutting and cutting - stiffening plate - cutting - acid treatment - adhesive coating - shot blasting. But if you want the high quality elastomeric bearing pad, and the quality is good enough,the selection of raw materials cannot be ignored. The selected rubber material quality is the most important.
For example, good rubber has a shiny and dark appearance, and can feel a little elasticity when pressed with fingers;
However, rubber bearings with poor quality have a dull appearance, and Uneven color distribution.
If you want to know if the elastomeric bearing pad is good quality, some testings are necessary. you can distinguish it from aspects such as compressive modulus of elasticity and shear modulus of elasticity.
Steel plates as reinforcement of elastomeric bearing pads are very important too. they are the guarantee of the loading capacity of bridge rubber bearings, so the thickness of the steel plates must meet the standard, and finished plates must be selected as raw materials to avoid bending plates, etc. In data processing, it is necessary to achieve rust removal, sandblasting, and then ensure the adhesion between the rubber support and the steel plate.
As elastomeric bearing pad supplier, we strictly control the production process. In order to produce good quality, we do necessary test before officially production, to make sure the performance can meet the standard requirements.
The same production and quality control method are used when producing PTFE sliding bearing pad and other rubber bearings such as lead rubber bearing.
