Application

This unit of competency defines the skills and knowledge required to design, manufacture and finish polymer patterns.

It applies to the manufacture of investment casting dies and polymer patterns for medium production castings, core boxes, tooling aids and jigs and checking of fixtures. Construction includes solid polymer, filled, laminated fibreglass or metal inserts.

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 and include: ·

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

identifying and interpreting specifications and customer requirements in producing polymer patterns

preparing to produce polymer patterns by inspecting patterns or cores for appropriate surface finish, and setting up joint line or flat board to specifications

undertaking numerical operations, including use of geometry and determination of contraction rates

selecting and mixing the appropriate polymer materials and hardener to correct ratios and proportions in a safe and effective manner on at least two occasions

applying polymer on at least two occasions to specifications, ensuring air is not trapped, excessive heat is not generated and delamination does not occur in final use

machining and finishing faces of polymer pattern to specifications on at least two occasions

applying method of location to patterns or core boxes

carrying out maintenance and repair of patterns or core boxes.

Note: Where a volume and/or frequency is not specified, demonstration must be provided at least once.

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)

machining for patternmaking

parting agents

methods of locating patterns or core boxes

types of surface finishes

types of polymers and their applications

mixing ratios and calculations

characteristics of polymer under exothermic reaction and associated control measures

methods of stripping

pattern checking techniques.

Assessment Conditions

Assessors must:

have vocational competency in producing polymer patterns 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 that 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 language, literacy, numeracy and employment skills that are essential to performance. Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

Prerequisite Units

• {'code': 'MEM07032', 'title': 'Use workshop machines for basic operations'}
• {'code': 'MEM09002', 'title': 'Interpret technical drawing'}
• {'code': 'MEM11011', 'title': 'Undertake manual handling'}
• {'code': 'MEM12023', 'title': 'Perform engineering measurements'}
• {'code': 'MEM12024', 'title': 'Perform computations'}
• {'code': 'MEM13003', 'title': 'Work safely with industrial chemicals and materials'}
• {'code': 'MEM13004', 'title': 'Work safely with molten metals/glass'}
• {'code': 'MEM13015', 'title': 'Work safely and effectively in manufacturing and engineering'}
• {'code': 'MEM14006', 'title': 'Plan work activities'}
• {'code': 'MEM16006', 'title': 'Organise and communicate information'}
• {'code': 'MEM18001', 'title': 'Use hand tools'}
• {'code': 'MEM18002', 'title': 'Use power tools/hand held operations'}

Parent Qualifications

• MEM40119 — Certificate IV in Engineering
  MEM

Related Units

• MEM07018 — Write basic NC and CNC programs
  Same training package
• MEM09023 — Create 3-D code files using computer-aided manufacturing system
  Same training package
• MEM10003 — Install and test electrical wiring and circuits up to 1000 volts a.c. and 1500 volts d.c.
  Same training package
• MEM05045 — Perform pipe welds to code standards using manual metal arc welding process
  Same training package
• MEM19060 — Cut and polish a gemstone assembly
  Same training package
• MEM18064 — Maintain instrumentation system components
  Same training package