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| Identification of common sense belt surface quality | |||
| Author:admin Source:Original Updated:2013-6-17 | |||
Conveyor belt surface smooth, light cleansing requirements are very high, the conveyor belt surface process on the difference between good and bad are mainly the following the engineer of Zhongbo to tell you about:
A conveyor belt rubber plasticity is too small or poor mobility: If EPDM or SBR rubber compound formula covering combinations unreasonable, especially softeners used improperly, plastic plasticity small, poor mobility may have resulted in Ming scars, solution: the rational use of softener and plasticizer dosage, and strictly control the plasticity mix and mix uniformity, so that rubber meet the technical requirements. 2 conveyor belt vulcanization too fast: When folded flat vulcanizing machine, if the conveyor belt vulcanization speed is fast, rubber conveyor belt has not completely go peacetime, has been vulcanized rubber, not filled in place is bright scar. Solution, proper control of conveyor belt rubber vulcanization speed, ethylene-propylene rubber and SBR, its heat-resistant cover rubber vulcanization speed is very slow. The neoprene is zinc oxide and magnesium oxide crosslinking agent, if the magnesium oxide agglomerate deterioration moisture absorption, is not active, the scorch performance is poor, often there will be excessive speed sulfur phenomenon, so the quality control of magnesium oxide The key to solve this problem. 3 plastic rubber conveyor belt is too large, too large or viscous sulfide gas caused nest: If the viscosity is too large rubber conveyor belt, when the vulcanizing machine when the mold, not easy to squeeze air out, they tend to nest gas cause Ming scars, so plasticity plastic cover is not too large, generally more than 0.40 above operation is not so favorable, especially neoprene. Because ethylene-propylene rubber and SBR viscous differential. If the plastic cover plasticity bigger, rarely appear bright scar. 4 conveyor led astray uneven thickness. Conveyor led astray thickness difference is too large may also cause Ming scar. It should control the conveyor belt core thickness difference and take as the thickness of the canvas. Cushion rubber and plastic cover of the film thickness must be uniform, and in the process each inspection, try to make the strip thickness uniform. 5 conveyor horn compression ratio is too thick and too small. Welfare horn belt over a strip thickness is too small, will produce clear scars. If the difference is too large, there may cause tape empty side, sponges and blistering. Solution: use meet the specifications conveyor horn. 6 conveyor belt vulcanizing pressure is insufficient. Due to mechanical failure or pressure measurement errors. Not reach the conveyor belt vulcanizing pressure, often appear out scars, and even sponges and blistering. Stress is an important element of vulcanized three indicators. It should always check whether the normal hydraulic machine, hydraulic table should be regularly calibrated. 7 belt tension clamping pressure is too large, resulting in green tape holding parts of the dent. Solution: Adjust the belt clamping pressure 8 belt vulcanization without secondary extrusion, or extruded frequently enough, causing the nest gas. The solution: make multiple extrusion completely exclude air. 9 vulcanized conveyor strip is too small, green tape and the mold frame gap is too large. Solution: Replace low or added a file horn strip. 10 belt release agent used improperly, causing surface air nest. Conveyor belt vulcanizing process conditions should choose the appropriate release agent. While isolating the concentration should be suitable for process requirements. Isolation concentration is too large, although the surface bright scar is gone. But it is likely to cause nicks and brim edge parts of heavy leather. Isolation concentration is too small, will not achieve isolation. Secondary extrusion often caused by air can not exclude all the bright scar, so good control of conveyor isolation meets his concentration and choice of release agent used is very important! Strength conveyor belt factory, with over 20 years experience in the production of conveyor belts, conveyor belt in full accordance with the national standard production, production of conveyor belt, flat surface, finish high praise by the customers! Welcome customers to negotiate conveyor nationwide business! | |||
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