1, Conveyor belt joints prone to cracks, fractures?

    The strength of the belt joint is lower than the strength of the normal belt. Common mechanical form with the Department of the joint, the joint strength can only reach 40-50% of the body strength, the quality of the cold glue form is good, the joint strength can reach 60-70%, while the hot glue joint strength can reach 80-90% (Joint approach accurate, lack of quality). Because the joint parts of the intensity is relatively low, if the wrong way to glue, the joint strength will be even lower, such as surgery, grinding hurt the next layer of cloth, excessive grinding, lap length is not enough, the number of steps is not enough, Rubber performance is very poor or have lost their effectiveness from the sulfur, excessive rope polish, rusty wire rope, joint strength of the site will be greatly reduced discount, when in use, it is easy to reveal the phenomenon of the fracture of the joints.

    In addition, if the conveyor belt does not consider it appropriate to use a sealing compound, or if the direction of the adhesive joint is not correct, the joint may be easily exposed (cracks).

2, the conveyor belt out because of why?

    Belt normal operation, the speed of not less than 95% of roller speed. If the roller and the conveyor belt friction is not enough, the conveyor belt is easy to reveal the phenomenon of slip out. The driving roller and the conveyor belt end of friction by many, common are: Rally enough, the load began to work, the roller surface friction coefficient is not enough. Rally enough end by: tensioning enough, with the building is not enough, the conveyor belt is too long;

End of the roller surface friction coefficient is not enough by the roller surface powder and water fermented food made of plastic wear too much, the body is too wet or sticky with lubricating oil, the body surface sticky material (easily swollen water ).

3, glue with plastic materials, glue storage what are the requirements?

    Film, glue should be kept in a gloomy, dry place, to prevent direct sunlight mapping, to prevent all kinds of radiation, and away from the fire.

    Film, glue should be kept in a dusty place to prevent a variety of chemical things with their contact.

    Keep the film, the glue background wet degree of 50% -75%, the temperature should not be less than 5 ℃, not more than 35 ℃.

    Soft film, glue retention period: 1 month in summer, winter 2 months, 1 month and a half in spring and autumn.

4, the tape bonding method?

    I propose that the conveyor belt gluing suitable for the use of hot glue in the form of adhesive, semi-waist need to paste core glue, each ladder can only have a layer of cloth, the direction of the joints should be along the conveyor belt.

5, half a strip of steel with a longitudinal tear 14-15 meters, how patch?

    The damaged parts of the upper and lower cover glue all stripped (length over the destruction of local 50-100mm, the width of more than the destruction of the local 30-50mm), while taking a shedding the same volume of rubber (preferably with a layer of cloth), and then In accordance with the cold plastic patch can be.

6, hot plastic stripping form (one side of the plastic to remove the line will not work)?

    This is an additional method of bonding, which is acceptable, but consider the following if you think it is appropriate:

    a, must be considered suitable to use sealing glue;

    b, the side of the intersection of the plastic parts of the site must go through the convergence of cooked rubber;

    c, the rubber convergence of the site must be polished

    Lack, if the disposal is very bad, easy to destroy the side of the plastic parts.

7, EP high temperature zone and cotton canvas high temperature zone comparison:

    a, the same point: cover the same plastic.

    b, not the same point: the ability of cotton canvas supreme temperature 150 ℃; EP-TNG canvas can be used for a long period of time under the conditions of 200 ℃ office, supreme can be used at 220 ℃ conditions;

    Cotton canvas strength is relatively low, only 50N / mm; and EP-TNG canvas strength is relatively high, commonly used 200 type 200N / mm;

    Cotton canvas with low adhesion temperature, EP high temperature adhesive force is relatively high;

   EP temperature zone with the survival of the surface life often in cotton canvas with high temperature.

8, not the same core-rubber manufacturers can mix?

    It is not proposed that different manufacturers of core-rubber mix, because different manufacturers of core-based pharmaceutical formulations according to different drugs. Rubber in the appropriate variety of large, and some will have interactive feedback, according to the same manufacturer's prescription pharmaceuticals, will not be exposed to have a good interaction between the appropriate agent, but not the same manufacturer under the prescription pharmaceutical differences are very large, Will not the same core-core manufacturers use, may reveal the interaction of the right agent, affect the use of core rubber effect.

9, the joint temperature reaches 120 ℃, but did not reach the normal vulcanization temperature is good?

    Can not. Rubber vulcanization vulcanization and crosslinking temperature is vulcanized rubber vulcanizing agent and enhancer vote, ordinary manufacturers in order to ensure the safety of rubber processing, conveyor belt will not be used vulcanization rubber curing temperature is set low. Because of this, the rubber does not get into normal vulcanization at a temperature of 120 ° C, because of this, the quality of the belt joint can be greatly affected at 120 ° C.

    Generally vulcanization temperature is higher than the vulcanizing agent vulcanization critical temperature and can not reach the normal vulcanization temperature, you can take to extend the vulcanization time approach to rubber vulcanization can meet the requirements. Ordinary temperature of less than 10 ℃, vulcanization time to extend 2-4 times.

    Of course, for reasons of performance considerations, we do not propose to use a method of curing at lower temperatures for a longer period of time, as appropriate.

10, why cloth density, thickness?

    Cloth dense, thick and cloth varieties, strong registration related. Because different fiber modulus, strength, because this is to achieve the required strength, we must take a different diameter, not the same denier fiber, yarn, because this revealed the density of the cloth, the thickness of the Difference, in general, polyester to nylon dense, but also thick nylon; strong high fabric than strong low density, coarse.

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