AW-3: Fabricate a Square Angle Iron Frame
You will learner to fabricate a square angle iron frame from an engineering drawing
Key and critical concepts which you will learn:
On completion of this module, the learner must be able use an engineering drawing to mark off and fabricate a square angle iron frame by using the heating and bending method.
- A practical test will be set at the end of the module and must be completed without references other than a table showing angle iron back marks.
- The learner will be given an engineering drawing of a square angle iron bracket, as well as the necessary material and equipment, and must mark off and fabricate the bracket by using the heating and bending method.
- The following standards must be achieved:
- (a) All the sizes must be within ±1,5mm of the required measurements.
- (b) The back marks must be within ±0,5mm of the requirements.
- (c) The hole pitches must be within ±0,5mm of the required pitch.
- (d) The frame must be square. The diagonal measurements (from corner
- to corner) must not differ more than 2,5mm.
- All the appropriate safety measures must be adhered to. Refer to the HIAC Form.
Tools, consumables, machinery and equipment required:
- Angle iron, oxy-acetylene equipment, smiting tool, hammer, square, anvil, punch and shear machine or pedestal drilling machine, rule or tape, chalk, arc welding machine, welding rod.
Angle iron has many uses in the mining industry, e.g. for safety guard frames, brackets, flanges, etc.