Engineered Components: Wheels, Rollers and Anti-vibration Control Parts

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Quality Control in CJC is divided into Material Quality Control and Part Quality Control. 

Material quality control includes two kinds of material inspection, one is for incoming raw material, such as a polyol, Isocyanate, natural rubber, EPDM rubber, carbon black, vulcanizing agent, bonding agent, additives, etc. The other is for finished material which is compounded internally. CJC has complete facilities for all these material inspections, including durometer, DIN abrasion tester, DMA, tensile testing machines, resilience tester, chambers for UV, Ozone, high & low temperature, rheometer, electrical resistance tester, microscope, NCO. The basic mechanical properties, like hardness, tensile strength, tearing resistance, resilience, compression set, Tg, damping, stiffness, hydrolysis, abrasion resistance, etc.   

Part quality control is implemented by different part business departments. 

Rubber Metal Parts: Besides the inspection of hardness, tensile strength, tearing resistance, resilience, compression set, aging, oil resistance, etc, the analysis of stress, mechanics, dynamic performance must be done at the same time. Meanwhile, the surface and specifications must be inspected for the outgoing reports. The main testing equipment includes servo-hydraulic testing machines, dynamic fatigue testing machines, chambers, coordinate measuring machines(CMM),  etc.

Polyurethane forklift wheels: Besides the inspection of hardness, tensile strength, tearing resistance, resilience, compression set, abrasion resistance,   hydrolysis, etc, the tests of rolling resistance, load resistance, enduring resistance, dynamic performance, traction force will be done.  Meanwhile, the surface and specifications must be inspected for the outgoing reports. Special testing requirements, like electrical resistance, wet gripping, dynamic balancing, long run, low-temperature resistance are available for us.  The main testing equipment includes a servo-hydraulic horizontal wheel testing machine, dynamic balancer, chambers, coordinate measuring machines(CMM),  etc.

Rubber Rollers: Besides the inspection of hardness, tensile strength, tearing resistance, resilience, compression set, aging, etc, the main testing items include abrasion resistance, coefficiency of friction, runout, torque, temperature stability, dimensional stability. Special testing requirements, like electrical resistance, UV resistance, hydrolysis, solvents resistance are available in CJC. The testing facilities include laser instruments, image dimension measuring system, digital length measuring testers, electrical resistance test, dynamic balancer, etc. 

NDI polyurethane microcellular parts: Besides the inspection of density, tensile strength, tearing resistance, resilience, compression set, etc, the main testing items include load-deflection behavior, dynamic stiffness, heat & cold resistance,  DMA, etc. The main testing equipment includes servo-hydraulic testing machines for static and dynamic fatigue, electric microscope, image dimension measuring system, etc.