Why does the Rubber Expansion Joint crack?
The sphere of rubber expansion joint is composed of inner rubber layer, reinforcement layer with multiple layers of scraped nylon cord fabric, outer rubber layer compound rubber tube.
Because the medium is different, so the rubber material used is also different. There are natural rubber, butyl rubber, nitrile rubber, EPDM rubber, neoprene, silicone rubber, fluorine rubber and so on. They are heat-resistant, acid-resistant, alkali-resistant, corrosion-resistant, wear-resistant, oil-resistant and so on.
As the sales of rubber expansion joints have increased greatly in the world, this kind of pipeline compensation fittings has gradually become an indispensable part of the modern industrial pipeline laying. Therefore, the installation of rubber expansion joints is also very important.
Today, we will make a more detailed summary of the reasons for the cracking of rubber joints for your reference in future construction.
1. The strength of the joint part of the rubber joint is relatively low. If the gluing method is inaccurate, the strength of the joint will be even lower, and cracking may occur. This requires that the production process must control the vulcanization process of rubber joints to avoid the phenomenon of inadequate vulcanization.
2. The connection length is not enough in the process of using rubber joints. Forcing beyond the connection length and arbitrarily expanding the contraction range may also crack. The compensation expansion amount of the pipe must be accurate, according to the pipe material, temperature, pipe length, expansion coefficient to arrive at the exact expansion amount, to avoid the expected compensation amount, resulting in the rubber joint pull off.
3. In some high pressure pipelines or bends of pipelines, rubber expansion joints must be equipped with external limiting devices. Especially at the bend of the pipeline, brackets or piers should be added to protect the rubber expansion joints.
4. Rubber expansion joints may cause cracking under the influence of outdoor bad weather, bursting sunlight or below the use temperature. Outdoor use of rubber expansion joints should do a good job to protect rubber expansion joints from the sun to extend its service life.
5. The strength of the joint part will be greatly reduced if the rubber machine used in the vulcanization process is not good or has failed since sulfur, excessive grinding, rusting of the wire rope, etc. In use, there is also a possibility that the joint part will be easily disconnected.
JOINTIB is always glad to assist and help on all questions of Rubber Expansion Joints. You can contact us by filling out a form on our website or writing email to sales@jointib.com
Send Your Question
PEW
Hi, I’m the author of this post, and I have been in this field for more than 10 years. If you want to get more info about industrial pipe rubber expansion joints, feel free to ask me any questions.
