Quality



◇ LOCATONS：
Home >> Quality
 


Quality

Quality Inspection Key Points

Sand preparation/mold/mold drying/assembling Raw Material Inspection


Melting/casting/cold/cleaning
Ladle Final Analysis


Rough Machining
Hardness Test  (3X+1Y) /3-7 points

Stress Test  3points (both ends and barrel)

Utrasonic Test (whole barrel surface)
                      
Metallographic Test (barrel/neck surface)


Heat TreatmentHardness Test  (3X+1Y) /3-7 points

Tension Test (barrel 10*140mm)


Fnishing Machining                   
Hardness Test  (3X+1Y) /3-7 points

Dimension and surface test (drawing)


Packing/delivery
Test certificate for each roll                 
Hardness test
Metallographic test
Ultrasonic test
Dimension and surface test