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Elements and Performance Criteria

1. Prepare for replacement
   • Review work order and where required check with appropriate personnel.
   • Select appropriate repair, maintenance and personal protective equipment and check for operational effectiveness in line with manufacturer's recommendations.
   • Plan replacement process in line with work order.
2. Remove worn tips
   • Follow organisational safety procedures thoughout all maintenance and repair processes.
   • Clean foreign matter from saw and check for defects.
   • Identify and mark broken tips.
   • Remove broken tips minimising damage to the tooth seat and dispose of in line with environmental protection practices.
   • Repair tooth seats to specified tolerance and dimensions.
3. Replace tips
   • Set up saw in brazing jig in line with manufacturer's instructions.
   • Select brazing material and suitable technique for application and heat control.
   • Select appropriate replacement tip and braze into position.
   • Trial weld one tip and adjust to confirm weld pressure, current temperature and annealing settings against specifications.
   • Segregate and dispose of tips with sub-standard welds in line with environmental protection practices.
   • Set manual or automatic feeds in line with number of tips to be welded.
   • Complete tip replacement regularly; check and adjust annealing process temperatures to keep within specified range.
   • Remove surplus brazing material from saw surfaces and dress tip faces for sharpening.
   • Identify routine processing and equipment faults and resolve or report to appropriate personnel.

Range Statement

Not Applicable

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Performance Evidence

A person demonstrating competency in this unit must satisfy all of the elements, performance criteria and foundation skills of this unit. If a specific volume or frequency is not stated below, then evidence must be provided that the following requirements have been performed on at least one occasion:

follow organisational policies and procedures relevant to replacing tungsten tips

replace tungsten tips in line with the work order and within prescribed organisational requirements

remove and replace tungsten tips from equipment

remove and assess the condition of tungsten tips in line with standard operating procedures

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Knowledge Evidence

A person competent in this unit must be able to demonstrate knowledge of:

purpose, features and operation of saws for which tungsten tips are replaced:

band saws

circular saws

gang saws

features and names of different parts of saw blades

purpose, features and operation of tools and equipment used to replace tungsten tips:

brazing equipment and brazing material

brazing jigs

methods for:

removing saw blades from saws

assessing saw blade condition

removing tungsten tips from saw blades

brazing new tungsten tips onto the tooth face or tooth seat

annealing processes and temperatures for tungsten tips and saw blades

appropriate tolerances for weld deposits and replacement tip sizes

characteristics of metal used in saw blades and effects of brazing

organisational policies and procedures specific to replacing tungsten tips:

workplace health and safety with particular emphasis on equipment lock out and use of personal protective equipment

communication reporting lines

recording and reporting processing and equipment faults

environmental protection practices for repairing and maintaining tools and equipment in forest products factory settings:

reducing water and energy use

cleaning plant, tools and equipment

disposing of, recycling and reusing materials

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