After stock in, take samples in propotion. Test items are chemical composition, macrostructure,non-mettalic inclusion,crystal degree,decarburized layer,tensile test,impulse test, ultrasonic test etc. Materials that psss all above test items can be used.
chemical compositions by spark Spectrometer
Macrostructure and nonmetallic inclusions by metalloscope
Inspection for internal defects by digital ultrasonic
Confirm qualified materials with their steel grade,specifications,qualified marks,then hoist them on material bed.
On each bar’s top end,within 50mm to top, mark the last 6 production numbers by laser marking machine for traceablity.
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Post time: Jan-24-2021