Steel belt users are very concerned about the service life of steel belts, we have summarized the following points related to the service life of steel belts, hoping to help you better understand our steel belts.
Firstly, the steel belt will bear too much stress will affect the service life.
What is the best stress for the steel belt? Of course, the less stress the steel belt bears, the longer the life, which should be combined with the needs of users to produce rubber products. Generally speaking, taking MT1650 steel belt application in DLG-700X1400 equipment of Shanghai Rubber Machinery No. 1 Factory as an example, most production users adjust the value of the hydraulic gauge at about 15~20Mpa. In addition, due to the different diameters of the hydraulic cylinders used by the drum vulcanizer to support the extension rollers, the specific values will also be different. Please consult the equipment manufacturer for the specific values indicated by the hydraulic table of the drum vulcanizer.
Secondly, many users think that the thicker the steel belt, the longer its lifespan before buying it, which is actually a misunderstanding. Although the thick steel belt can withstand the impact of hard objects in the material and is not easy to produce large pits, the thick steel belt has a large bending curvature radius, which is more sensitive to fatigue damage caused by repeated bending, and the bending stress is larger, so the thicker steel belt may not have a longer service life.
In addition, after the installation of the steel belt, it is not advisable to immediately adjust the pressure to the value required for production, and the pressure should be gradually increased until normal operation. The temperature of the steel belt should also be gradually increased to reduce the internal stress deformation caused by thermal expansion and contraction, and the heating device should not be started when the vulcanizer stops running.
Finally, if the following conditions are not paid attention to during use, the steel belt is also prone to damage:
1) Serious damage to the steel belt caused by improper operation. If the rubber material is partially overlapped, foreign objects similar to maintenance tools will enter the drum vulcanizer, resulting in local deformation of the steel strip and leaving traces on the surface of the product.
2) The maintenance interval is too long, and the surface of the steel belt should be cleaned every week.
3) Poor quality of vulcanized raw materials. This is mainly due to excessive local stress caused by hard foreign matter in the raw material.
4) The equipment is not operating properly. For example, the steel belt deviation caused by various reasons leads to the steel belt ruffles.
5) The edge of the steel strip forms an sharp angle, which causes the stress concentration and cracks.
6) The steel belt is poorly cleaned, with foreign objects sticking to the inner surface of the steel belt.
7) The rubber product is narrower than the width of the steel belt, and the edge of the vulcanized rubber product exerts force on the same position of the steel belt for a long time.
8) The amplitude of the manual adjustment roller is too large, or the drum vulcanizer is frequently adjusted.
