DETAILS OF TESTING
Incoming Raw Materials Testing
- Pig iron – c,si, mn,s,p,cr,cu #
- Coke - vm, ash, fc - tested using muffle furnace
- Pitch powder – vm, ash, fc - tested using muffle furnace
- Scrap – c, si, mn, s, p, cr, cu #
- Bentonite powder – swelling capacity
- # carbon and sulphur is tested using carbon sulphur apparatus
- Si, mn is tested using chemical solutions
Manufacturing Process Testing
- Moisture tester – to test the moisture of sand
- Compression strength tester – to test green compression strength and green shear strength of sand
- Pitch powder – vm, ash, fc - tested using muffle furnace
- Sand rammer – to test the compatibility of sand
- Vm, loi - tested using muffle furnace
- Active clay of sand is measured using methylene blue test
- Pyrometer- to test the temperature of molten metal.
- CE meter - to test the c and si content of molten metal. And check microstructure
- Vacuum emission spectrometer
Inspection
- Rockwell hardness tester – to test the hardness of casting
- Vernier caliper – to test the dimensions of casting
- MPI (crack detection)
- UTM (tensile, elongatin, compression)
- Microscope with image analyser
- Elcometer to check zinc coating thickness
- Adhesion test for no fill up in zinc
- Digital thermometer to check density