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Evidence Guide: MEM08018B - Electroplate engineering coatings

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEM08018B - Electroplate engineering coatings

What evidence can you provide to prove your understanding of each of the following citeria?

Select treatments and processes/equipment for producing engineering finishes

  1. Appropriate treatment processes are selected according to base metal type, surface condition and relevant job specifications.
  2. Operating/process parameters are selected to achieve required coating.
  3. Appropriate equipment is selected.
Appropriate treatment processes are selected according to base metal type, surface condition and relevant job specifications.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Operating/process parameters are selected to achieve required coating.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Appropriate equipment is selected.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare work for engineering finishes

  1. Products are correctly masked (stopped off) for selective plating.
  2. Where applicable, conforming anodes are constructed and fitted correctly.
  3. Where applicable, shields and robbers are constructed and fitted.
  4. Pre-treatment processes are carried out, where applicable.
Products are correctly masked (stopped off) for selective plating.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Where applicable, conforming anodes are constructed and fitted correctly.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Where applicable, shields and robbers are constructed and fitted.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Pre-treatment processes are carried out, where applicable.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor and control operating conditions and processes for engineering coatings

  1. Operating/process parameters are set to produce required surface conditions/specifications.
  2. Surface conditions of finished components are monitored and confirmed and abnormalities are identified.
  3. Corrective actions are taken to rectify non-conforming conditions.
Operating/process parameters are set to produce required surface conditions/specifications.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Surface conditions of finished components are monitored and confirmed and abnormalities are identified.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Corrective actions are taken to rectify non-conforming conditions.

Completed
Date:

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Maintain solutions for engineering finishes

  1. Solution compositions are checked and confirmed to specification/operating range.
  2. Adjustment requirements/additions are determined.
  3. Additions are made to adjust solution composition to correct operating range.
Solution compositions are checked and confirmed to specification/operating range.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Adjustment requirements/additions are determined.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Additions are made to adjust solution composition to correct operating range.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to apply electroplate engineering coatings. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication materials handling, recording and reporting associated with applying electroplate engineering coatings or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Guidance information for assessment

Required Skills and Knowledge

Required skills

Look for evidence that confirms skills in:

selecting treatments and processes/equipment for producing engineering finishes

preparing work for engineering finishes

calculating process parameters

determining current densities

assessing material condition for suitability for plating

selecting equipment, masking, materials

correctly sizing positioning and securing anodes

sizing, positioning and securing shields and robbers

carrying out mechanical/chemical pre-treatment

setting times voltages/currents and temperature

monitoring and controlling operating conditions and processes for engineering coatings

maintaining solutions for engineering finishes

Required knowledge

Look for evidence that confirms knowledge of:

effects of plating process on different materials

conditions affecting engineering finishes

base metal types

surface finish of untreated material

mechanical/chemical and specialised pre-treatment processes

process parameters for achieving different coatings

characteristics of different surface finishes

masking materials and masking techniques

safe operation of equipment to produce engineering finishes

current distribution principles

methods of constructing/fabricating, fitting anodes

current-capacity of conforming/auxiliary anodes

the role, construction, properties, applications, and positioning of shields and robbers

finish requirements, permissible tolerances

the causes of abnormalities and their related corrective actions

purpose and application of simple tests including pH, titration, density

calculations related to additions/adjustments to solution and of product surface area

safe work practices and procedures, including handling chemicals

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Treatment processes

Electroplating, electroforming, electroless plating

Operating/process parameters

Treatment times and currents, bath pH temperatures and densities, anode conditions, addition agent content, cleanliness of contacts etc., make-up, maintenance of solution levels and purity

Coating

Hard chroming, heavy nickel, electroless nickel, nickel composites, heavy deposits of nickel, copper, bronze up to 10 mm

Equipment

Wire racks, handling equipment, barrels, jigs, shields, robbers, etc.

Products

Base materials such as cast iron, brass, steels with machine welded sections, etc.

Masking materials

Wax, lacquers, tapes, foils

Anodes

Soluble, insoluble auxiliary anodes, etc.

Solution compositions

Cleaning, pickling, electroplating, chromate, acid dips

Checks

Density, titration, pH

Adjustment

Strength of solutions, temperature range