Quality Control
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Quality Control

Our quality control begins from raw material, forging, heat treatment, semi-finished machining, final machining till assembly, each step is controlled strictly by our engineers, all of them have 10+ years of engineering experience and are specialized in metallurgy, forging, heat treatment, NDT, machining and testing respectively.

The outline of quality control process as follow

Raw material
(bar, ingot, tube)
EF+LF+VD/VOD+(ESR/VAR)

Spectra test
Metallographic test etc

Forging
(Close die forging)
(Open die forging)

Forging temperature
Reduction ratio etc

Rough machining Heat treatment
(precipitation hardening, normalizing,
quenching+temper, etc)

Mechanical properties, Impact test,
Metallographic test, Ultrasonic test,
Magnetic particle test, etc.

Semi-finished machining
final machining

Dimensional inspection
(CMM, projector, etc)

Surface treatment
(induction harden, QPQ, nitriding, carburizing,
carbonitriding, Nickel plating, etc)

Hardness test
Thickness test etc

Assembly

Pressure test
Load test etc.