Which of the following process uses organic binder?
A.Shell moulding
B.Furan process
C.Phenolic isocyanate process
D.All of the above
Category: Foundry Technology Mcqs
The sand mass does not fall out of the moulding box but is held firmly in it when the moulding box is lifted. This is due to the property of
A.porosity of sand
B.adhesiveness of sand
C.refractoriness of sand
D.plasticity of sand
Pattern draft for external surfaces is (in mm/m)
A.15 — 50
B.10 — 25
C.40 – 60
In radiography test on castings which of the following rays are never used?
A.X-rays
B.beta rays
C.gamma rays
D.all of the above
When bench moulding is adopted using three boxes, the central box is called
A.cope
B.cheek
C.drag
D.none of the above
Which of the following is a screen?
A.Shovel
B.Riddle
C.Rearner
D.Slick
Silica is the second most important constituent of moulding sand which provides
A.binding strength
B.refractoriness
C.chemical resistance
D.none of the above
A defect in castings in which a discontinuity is formed due to the imperfect fusion of two streams of metal in the mould cavity is known as
A.hot tears
B.cold shut
C.scabs
D.drops
Of the following metals, the pouring rate should be minimum for
A.steel
B.aluminium
C.brass
D.cast iron
The property of the foundry sand which enables it to adhere to the surface of other materials is termed
A.Cohesiveness
B.Adhesiveness
C.Either of (A) or (B)
