IS 12006 : 1987 Metal pattern and epoxy resin pattern equipment for foundries

1 Scope

1.1 This standard covers the requirements of pattern equipmentsfor foundry. It specifies mould tapers, contraction allowances,machining allowances, pattern manufacturing tolerances and othertechnical aspects of pattern making and usages.

1.2 This standard does not cover pattern accessories, like guidepins, closing pins, vent, wires, which are covered by separateIndian Standards [see IS 4981 : 1984, IS 4982 : 1984, IS 6447 :1986 and guide bushes ( under preparation), etc.

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 28 :1985 Specification for phosphorbronze ingots and castings

IS 210 : 1978Specification for grey iron castings

IS 226 : 1975Specification for structural steel (standard quality)

IS 292 : 1983Specfication for leaded brass ingots and castings

IS 306 : 1983Specification for tin bronze ingots and castings

IS 318 : 1981Specification for leaded tin bronze ingots and castings

IS 617 : 1975Specification for aluminium and aluminium alloy ingotsand castings for general engineering purposes

IS 1513 : 1980 Woodenpattern equipment for foundries

IS 1513 : 1971Specification for pattern equipment for foundries

IS 1865 : 1974Specification for iron castings with spheroidal ornodular graphite

IS 2004 : 1978Specification for carbon steel forgings for general engineeringpurposes

IS 4981 : 1984Specification for guide pine for foundry pattern plates

IS 4982 : 1984Specification for closing pins for foundry moulding boxes

IS 5519 : 1969Deviations for untoleranced dimensions and mass of grey ironcastings

IS 6447 : 1986Specification for vent wires for use in foundries