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Evidence Guide: MEM04022A - Examine appropriateness of methoding for mould design

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

 

MEM04022A - Examine appropriateness of methoding for mould design

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

Identify specification requirements for required casting

  1. Obtain all relevant job requirements and design specifications in accordance with workplace procedures
  2. Identify and interpret drawing requirements and specifications
Obtain all relevant job requirements and design specifications in accordance with workplace procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify and interpret drawing requirements and specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Evaluate proposed mould design for methoding requirements

  1. Identify desired solidification process taking into account casting design, metal composition, mould design and specifications
  2. Identify running, gating and feeding principles and techniques appropriate for the particular casting
  3. Examine suitability of methoding if already selected including gating and the number, placement and sizing of feeders/risers
  4. Where required, enter data to facilitate the generation of a computer simulation of methoding and casting process for later comparison to actual casting
Identify desired solidification process taking into account casting design, metal composition, mould design and specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify running, gating and feeding principles and techniques appropriate for the particular casting

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Examine suitability of methoding if already selected including gating and the number, placement and sizing of feeders/risers

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Where required, enter data to facilitate the generation of a computer simulation of methoding and casting process for later comparison to actual casting

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Report results

  1. Determine reporting requirements
  2. Prepare reports in accordance with standard operating requirements
  3. Circulate and file report to procedures
  4. Communicate suggestions for improvements directly to other team members where appropriate
Determine reporting requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare reports in accordance with standard operating requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Circulate and file report to procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Communicate suggestions for improvements directly to other team members where appropriate

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

Evidence should be provided from the evaluation of a number of moulds. Evidence must be provided of manual calculations and compared to computer program results.

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

Assessors should ensure that candidates can competently and consistently:

calculate manually and by use of computer programs runner and feeding systems for casting designs within defined design parameters

examine mould designs for suitability against job specifications

understand the interplay between moulds, cores, gating and feeding

examine the resulting casting for success of gating and feeding

compare casting results with computer simulated predictions.

Context of and specific resources for assessment

Assessment may occur on the job or in an appropriately simulated environment. Access is required to real or appropriately simulated situations, including work areas, materials and equipment, and to information on workplace practices and OHS practices.

Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate ethnicity, age, gender, demographics and disability.

Access must be provided to appropriate learning and/or assessment support when required. Where applicable, physical resources should include equipment modified for people with disabilities.

Method of assessment

Assessment must satisfy the endorsed assessment guidelines of the MEM05 Metal and Engineering Training Package.

Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of underpinning knowledge.

Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure its correct interpretation and application.

Assessment may be applied under project related conditions (real or simulated) and require evidence of process.

Assessment must confirm a reasonable inference that competency is able not only to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.

Assessment may be in conjunction with assessment of other units of competency where required.

Guidance information for assessment

Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed.

Required Skills and Knowledge

Required skills

Required skills include:

applying scientific principles to foundry mould design

examining mould designs using basic metallurgical skills and techniques to suit specific applications

calculating mould runner and feeding systems

selecting appropriate techniques and associated software and hardware technologies to suit specific applications in foundry mould design

presenting methoding solution and any associated limitations to mould design referring to the original aim of the application and any relevant instructions from metallurgist

Required knowledge

Required knowledge includes:

ability to perform calculations related to methoding and feeding including:

measuring dimensions of runner systems

calculating cross-sectional areas of sprue, runners and ingates

volumes and dimensions of feeders

the effects on solidification of:

nucleation

growth mechanisms (crystal and interfacial)

dendrite coherency

constitutional undercooling

superheat - effects, control and minimisation of excess heat

eutectic and peritectic solidification

grain structure

the principles underpinning the effective operation of running, gating and feeding systems including:

runner and gating principles (ratios)

determining type and placement of sprue, runners and ingates

inclusion control (slag and erosion)

calculations and effect of metal flow (lamellar and turbulent), velocity and temperature

calculation of feeder size

principles used in the determination of the location of feeders (end and feed zones, neighbourhood effect and feeding distances) including effect on solidification

exothermic and insulating feeding aids (sleeves and topping)

feeding mechanisms (liquid, mass, interdendritic, burst and solid)

use of computer packages (runner and feeder calculations and mould simulations) including benefits and limitations

yield calculations

risk management strategies to minimise defect formation and the methods for minimising:

shrinkage

porosity

segregation

hot tearing

shear

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.

Codes of practice/standards

Where reference is made to industry codes of practice and/or Australian/international standards, it is expected that the latest version will be used

Size and number of feeder heads and gating

Calculation of the size of feeder heads and gating includes manual calculation and use of computer programs within defined design parameters