Ruiqiang Production System
High-quality fastener manufacturer
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Cold Heading
The first core forming process, achieving over 90% material utilization while preserving continuous metal flow lines for superior fatigue resistance and high-volume efficiency. Key controls: die precision, wire material consistency and inspection of forming defects such as cracks and underfill.
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Machining
CNC turning meets the precision requirements of complex parts, controls critical tolerances and removes burrs from cold heading. Key controls: CNC calibration, in-line dimensional inspection and surface roughness.
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Thread Rolling
Rolling produces compliant thread profiles with high strength and consistent engagement, with full go/no-go gauge inspection.
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Heat Treatment
Controlled furnace uniformity, quenching and tempering deliver the mechanical properties required by automotive standards, relieve internal stress, prevent delayed fracture and refine the microstructure for toughness and fatigue life, with full process traceability.
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Surface Treatment
Coatings improve corrosion resistance, control friction coefficients and unify appearance; salt-spray and friction performance are verified.
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Automatic Sorting
Optical sorting machines with 7 independent HD camera modules perform 100% inspection of bolts, studs, nuts and rivets, detecting thread damage, head cracks, burrs and coating defects, measuring key assembly dimensions and automatically rejecting non-conforming parts — fast, non-destructive, high-volume inspection that safeguards vehicle assembly.
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Final Inspection
Machine and manual double inspection plus automated packaging prevent defects and mixed parts before shipment. Key controls: equipment accuracy, inspection traceability, manual checks, handling of non-conforming parts and mix-up prevention in packaging.
