SAQA

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SOUTH AFRICAN QUALIFICATIONS AUTHORITY

REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE:

Demonstrate an understanding of engineering materials, heat treatment and machinery

SAQA US ID	UNIT STANDARD TITLE
14485	Demonstrate an understanding of engineering materials, heat treatment and machinery
ORIGINATOR
SGB Civil Engineering Construction
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-
FIELD			SUBFIELD
Field 12 - Physical Planning and Construction			Physical Planning, Design and Management
ABET BAND	UNIT STANDARD TYPE	PRE-2009 NQF LEVEL	NQF LEVEL	CREDITS
Undefined	Regular	Level 5	Level TBA: Pre-2009 was L5	6
REGISTRATION STATUS		REGISTRATION START DATE	REGISTRATION END DATE	SAQA DECISION NUMBER
Passed the End Date - Status was "Registered"		2003-02-19	2006-02-19	SAQA 0146/03
LAST DATE FOR ENROLMENT		LAST DATE FOR ACHIEVEMENT
2007-02-19		2010-02-19

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.

This unit standard is replaced by:

US ID	Unit Standard Title	Pre-2009 NQF Level	NQF Level	Credits	Replacement Status
263013	Demonstrate an understanding of engineering materials and processes	Level 5	Level TBA: Pre-2009 was L5	6

PURPOSE OF THE UNIT STANDARD

This unit standard provides a broad introduction to the understanding of engineering processes and materials. It is the starting point for a learner in this sector. The focus is knowledge, skills, values and attitudes in relation to the learner`s own context and experience of the world of work.

The qualifying learner is capable of:

Explaining the basics of ferrous and non-ferrous metals.

Explaining and describing the basics of ferrous and non-ferrous alloys.

Describing and explaining the basics of thermo-plastic and thermosetting plastics.

Explaining and defining machining principles and processes in engineering.

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING

Learners accessing this unit standard will have demonstrated competence in mathematics, engineering science and technical drawing at NQF level 4 or equivalent.

Learners accessing this unit standard will have demonstrated competence in computer technology at Level 4 on the NQF or equivalent.

UNIT STANDARD RANGE

Various types of iron and steel will include cast-iron, gray iron, white iron, wrought iron and low, medium and high carbon steel.

Non-ferrous metals will include tin, lead, copper, zinc, antimony and aluminum.

Various elements alloyed with steel will include carbon, manganese, nickel, chrome, vanadium, tungsten and cobalt.

Various alloys will include high-speed steel, manganese steel, nickel, chrome steel, nickel-chrome steel, stainless steel and vanadium steel.

Non-ferrous alloys will include brass, bronze, solder, white metal and duralumin.

Thermoplastics will include nylon, polymethymethacrylate (perspex) and polyvinyl chloride (PVC).

Thermosetting plastics will include barelite and epoxy resins.

Various engineering machines will include lathe, drilling machine, milling machine, surface grinder and shaping machine.

Various machining processes will include turning, boring, drilling, reaming, counter boring, countersinking, tapping, threading, shaping, milling, grinding, slotting, chamfering and spot-facing.

Machining terms will include: basic size (of part and of a fit), actual size, maximum limit of size, minimum limit of size, zero line, deviation upper deviation. Lower deviation, actual deviation, tolerance (unilateral and bi-lateral), clearance, maximum clearance, minimum clearance, maximum interference and minimum interference

Specific Outcomes and Assessment Criteria:

SPECIFIC OUTCOME 1

Explain the basics of ferrous and non-ferrous metals

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. The influence of carbon on cast iron and steel is explained in accordance with accepted definitions

ASSESSMENT CRITERION 2

2. The classification of various types of iron and steel is explained in accordance with accepted definitions

ASSESSMENT CRITERION 3

3. The chief properties and uses of cast iron and steel are listed in accordance with accepted definitions.

ASSESSMENT CRITERION 4

4. The purpose of the processes and properties given to steel by hardening, tempering, annealing, normalising and case hardening are explained in accordance with accepted definitions.

ASSESSMENT CRITERION 5

5. The properties and uses of non-ferrous metals are described in accordance with accepted definitions.

SPECIFIC OUTCOME 2

Explain and describe the basics of ferrous and non-ferrous alloys

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. The effects of elements when alloyed with steel are described in accordance with accepted definitions.

ASSESSMENT CRITERION 2

2. The properties and uses of various alloys are explained in accordance with accepted definitions.

ASSESSMENT CRITERION 3

3. The composition, properties and uses of non-ferrous alloys are explained in accordance with accepted definitions.

SPECIFIC OUTCOME 3

Describe and explain the basics of thermo-plastic and thermosetting plastics

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. The characteristics and uses of thermoplastics is described and explained in accordance with accepted definitions.

ASSESSMENT CRITERION 2

3. The advantages and disadvantages of plastics in engineering is listed and explained in accordance with accepted definitions.

ASSESSMENT CRITERION 3

2. The characteristics and uses of thermosetting plastics is described and explained in accordance with accepted definitions.

SPECIFIC OUTCOME 4

Explain and define machining principles and processes in engineering

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Machining processes obtained by applying various engineering machines is explained in accordance with manufacturer's instructions.

ASSESSMENT CRITERION 2

2. A simple drawing and description is produced indicating various machining processes in required format and time frames.

ASSESSMENT CRITERION 3

3. Casting and forging processes are defined in accordance with accepted definitions.

ASSESSMENT CRITERION 4

4. International Standards Organisation (ISO) limits and fits are listed and described.

ASSESSMENT CRITERION 5

5. The implementation, value and functions of the International Standards Organisation (ISO) system are explained.

ASSESSMENT CRITERION 6

6. Conventional representation of machining terms are listed and defined according to organisational requirements.

ASSESSMENT CRITERION 7

7. The complete designations of size limits for a shaft and/or hole are interpreted.

ASSESSMENT CRITERION 8

8. The tables for selecting limits and fits for holes and shafts are applied in line with organisational requirements.

UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS

The relevant Education, Training, Quality Assurance Body (ETQA) will accredit providers offering learning towards this standard, and register assessors.

UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE

A general knowledge of ferrous and non-ferrous metals and alloys.

A general knowledge of thermoplastics and thermosetting plastics.

A general understanding of machining principles and processes in engineering.

A comprehensive understanding of the techniques for using and calculating limits of sizes by making use of tables.

A broad understanding of the International Standards Organisation (ISO) terminology for limits and fits.

Critical Cross-field Outcomes (CCFO):

UNIT STANDARD CCFO IDENTIFYING

Identify and solve problems around the areas of ferrous and non-ferrous metals and alloys, plastics and machining.

UNIT STANDARD CCFO COLLECTING

Collect, analyse, organise and critically evaluate information pertaining to ferrous and non-ferrous metals and alloys, plastics and machining.

UNIT STANDARD CCFO SCIENCE

Use science and technology to assist in determining machining and International Standards Organisation (ISO) tolerances.

UNIT STANDARD CCFO DEMONSTRATING

Understand the world as a set of related systems in how engineering is affected by many facets.

UNIT STANDARD NOTES

This unit standard has been replaced by unit standard 263013, which is "Demonstrate an understanding of engineering materials and processes", Level 5, 6 credits.

QUALIFICATIONS UTILISING THIS UNIT STANDARD:

	ID	QUALIFICATION TITLE	PRE-2009 NQF LEVEL	NQF LEVEL	STATUS	END DATE	PRIMARY OR DELEGATED QA FUNCTIONARY
Core	23773	National Certificate: Computer Aided Drawing Office Practice	Level 4	NQF Level 04	Passed the End Date - Status was "Registered"	2006-02-09	Was CETA until Last Date for Achievement
Elective	50018	Further Education and Training Certificate: Computer Aided Drawing Office Practice	Level 4	NQF Level 04	Passed the End Date - Status was "Registered"	2009-02-09	Was CETA until Last Date for Achievement

PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD:

This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.

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