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macrostructure

低倍组织 Test Item macrostructure
Purpose Detection of metal structure, defect evaluation
Test Period 3 working days
Test Range Various metals and alloys
The Cost For details, please call hotline 0510-82605847
       Low power is a name for a relatively high times, high times under the microscope as low in the normal size range can be enlarged 10 times the maximum observation, qualitative observation, macro morphology of macrostructure is observed in the low state of the times. Generally including the center of the loose, general loose, ingot segregation, and all kinds of macro defects can be exposed at low times. Generally used to check the product crack, foaming, deformation and other metallurgical
   Test method and standard
Test Item Test method Test standard Test Period Remark
Macrostructure Low - fold microstructure and defect etching test method for steel
ASTM E 340-2000
3 working days Cold acid etching method
Hot acid etching method
Electro etching method
Provide condition evaluation according to product standard or customer
Etch test for macrostructure and defect of steels GB/T 1979-2001
Standard method of macroetch testing for steel bars, billets, blooms and forgings ASTM E381-01(R06)
Steel products--Method for etch test of tower sample GB/T 15711-1995
Standard diagrams for macrostructure and defect in quality carbon structural steel and alloy structural steel continuous casting blank YB/T 153-1999
Standard diagrams for macrostructure and defect in continuous casting blank YB/T 4002-1991
Standard diagrams for macrostructure and defect in continuous casting slab YB/T 4003-1997
Steel--Examination by sulphur print(Baumann method) GB/T 4236-1984
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