In furan process, furan resins are primarily used as
A.binders
B.chemicals for exothermic reactions
C.fluxes
D.none of the above
A.binders
B.chemicals for exothermic reactions
C.fluxes
D.none of the above
A.more than the normal allowance
B.less than the normal allowance
C.same as the normal allowance
A.oxidation
B.reduction
C.carbonation
D.desulphurisation
A.Milling cutters
B.Gold ornaments
C.Jet engine nozzles
D.Buckets for superchargers
A.kaolinite
B.montmorillonite
C.illite
D.any of the above
A.directly proportional to the volume of the castings
B.Directly proportional to square of the volume of the casting
C.inversely proportional to square of the volume of the casting
D.inversely proportional to the volume the casting
A.325?C
B.425?C
C.525?C
D.625?C
A.Trammels
B.Combination square
C.Marking gauge
D.all of the above
A.Equal in size to the casting
B.Somewhat larger in size than the casting
C.Somewhat smaller in size than the casting
A.excess of clay
B.lack of clay
C.coarse irregular grains
D.none of the above