Abstract： AS 4314:2005 pdf download.Founding-Patterns, pattern equipment and coreboxes for the production of sand moulds and sand cores. 3.9 Quality class Classitication system which enables the parties concerned with the manufacture and use of patte...

AS 4314:2005 pdf download.Founding-Patterns, pattern equipment and coreboxes for the production of sand moulds and sand cores.

3.9 Quality class

Classitication system which enables the parties concerned with the manufacture and use of patterns, pattern equipment and core

boxes to be aware of their properties (such as fitness for purpose, quality and expected usage).

3.10 Contract review

Analysis and/or check of the order details carried out by the parties concerned, both before and during the processing of the

order.

3.11 Core print

Projection either attached to a pattern to form recesses in the mould or attached to a core at points where cores are to be

supported.

3.12 Required machining allowance (RNIA)

Material deliberately added to certain surfaces of patterns, pattern equipment and corehoxes which is removed, partially or wholly. from the casting during subsequent machining.

3.13 Contraction allowance

The dimensional variation or allowance added to the pattern in order to compensate for shrinkage of the casting during cooling from the pouring temperature.

3.14 Taper

Slope or angle deliberately given to certain patteril or corebox surfaces to aid the stripping of the pattern from the mould or the core from the corehox.

NOTE: Taper is sometinles referred to as draft or draft angle.

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