Third-party testing organizations provide testing services for molding machines covering equipment installation and acceptance, annual condition assessment, fault diagnosis, and process verification. The testing overview includes a comprehensive quantitative analysis of the equipment's geometric accuracy, motion characteristics, electrical safety, noise emissions, processing capacity, and wear degree of key components, and issues a legally valid testing report.
Testing items include dimensional accuracy testing, surface roughness testing, hardness testing, tensile strength testing, yield strength testing, elongation after fracture testing, microstructure analysis, decarburized layer depth testing, thread parameter testing, head bonding strength testing, cold heading crack detection, internal thread folding defect detection, die alignment testing, feed roller clamping force testing, cutter shearing quality testing, punch retraction distance testing, ejection synchronization testing, slider parallelism testing, noise testing, electrical grounding resistance testing, and emergency stop function verification.
The testing scope covers multi-station cold forming machines, double-stroke cold heading machines, three-stroke cold forming machines, four-stroke cold forming machines, five-stroke cold forming machines, six-stroke cold forming machines, seven-stroke cold forming machines, eight-stroke cold forming machines, nine-stroke cold forming machines, ten-stroke cold forming machines, high-speed cold forming machines, precision cold forming machines, automatic cold forming machines, CNC cold forming machines, hydraulic cold forming machines, mechanical cold forming machines, horizontal cold forming machines, vertical cold forming machines, double-stroke cold heading machines, three-stroke cold heading machines, parts forming machines, warm heading machines (room temperature testing), rivet cold heading machines, nut cold heading machines, bolt cold heading machines, ball head cold forming machines, and bearing roller cold forming machines. The testing instruments used include a coordinate measuring machine (CMM), image measuring instrument, surface roughness tester, Rockwell hardness tester, Vickers hardness tester, universal testing machine, metallographic microscope, ultrasonic flaw detector, magnetic particle flaw detector, laser diameter gauge, roundness meter, length measuring instrument, sound level meter, grounding resistance tester, infrared thermal imager, laser alignment instrument, digital micrometer, and height gauge. The testing methods employed include visual inspection, ultrasonic testing, magnetic particle testing, penetrant testing, direct dimensional measurement, spectrochemical analysis, metallographic examination, hardness testing, tensile testing, fatigue testing, noise testing, vibration analysis, torque testing, coating thickness testing, and salt spray testing.
