Application

This unit of competency defines the skills and knowledge required to inject materials under pressure for investment and burn-out aspects within ‘lost wax’ casting procedures.

This unit applies primarily to organic and synthetic wax injection, but can include resin and plastic materials injected under pressure for investment and burn-out aspects within ‘lost wax’ casting procedures.

No licensing, legislative or certification requirements apply to this unit at the time of publication.

What You'll Learn

Assessment Requirements

Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria on at least two (2) occasions and include:

following work instructions, standard operating procedures (SOPs) and safe work practices

identifying and interpreting specifications, job sheets or work instructions to select wax type according to wax, model and cavity specifications

conducting measurements and preparing moulds, including rectifying inappropriate mould features

completing injection and removing duplicated wax pattern

repairing, re-working, recycling or discarding imperfect wax patterns as required.

checking duplicate for compliance with master and specifications and identifying irregularities.

Knowledge Evidence

Evidence required to demonstrate the required knowledge for this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include knowledge of:

safe work practices and procedures and use of personal protective equipment (PPE)

wax types and characteristics

procedures for wax injection equipment and processes for the given values of time, temperature and pressure

characteristics of moulds

injection procedures

minor variations and adjustments to processes and equipment situations

undamaged wax duplicate removal techniques for a range of situations

procedures for wax duplicate inspection

common irregularities

causes and remedies of imperfections

procedures for safe cleaning, disposal and safe storage.

Assessment Conditions

Assessors must:

have vocational competency in performing wax injection of moulds for lost wax casting process at least to the level being assessed with relevant industry knowledge and experience

satisfy the assessor requirements in the Standards for Registered Training Organisations 2015 or its replacement and comply with the National Vocational Education and Training Regulator Act 2011, its replacement or equivalent legislation covering VET regulation in a non-referring state/territory as the case requires

Where possible assessment must occur in operational workplace situations. Where this is not possible or where personal safety or environmental damage are limiting factors, assessment must occur in a sufficiently rigorous simulated environment that reflects realistic operational workplace conditions. This must cover all aspects of workplace performance, including environment, task skills, task management skills, contingency management skills and job role environment skills

Conditions for assessment must include access to all tools, equipment, materials and documentation required, including relevant workplace procedures, product and manufacturing specifications

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Foundation Skills

• text: This section describes those required skills (reading, writing, oral communication and numeracy) that are essential to workplace performance in this unit of competency. Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

Prerequisite Units

• {'code': 'MEM13015', 'title': 'Work safely and effectively in manufacturing and engineering'}
• {'code': 'MEM16006', 'title': 'Organise and communicate information'}

Parent Qualifications

• MEM40119 — Certificate IV in Engineering
  MEM

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