NSC Agricultural Technology Welding techniques: The diagram below shows the cutt

Question

The diagram below shows the cutting nozzle of a plasma-cutting machine that is used to cut stainless steel.

4.1.1 Identify part A.

4.1.2 Identify the problem indicated by arrow B that can occur when thick materials are cut with the plasma-cutting machine.

4.1.3 Suggest an action to address the problem identified in QUESTION 4.1.2.

4.1.4 Name TWO types of gases that are commonly used in the plasma-cutting process.

4.2 Study the picture below of the oxyacetylene cutting apparatus that is used to cut metals and answer the questions that follow.

4.2.1 Name the TWO gases used during the oxyacetylene cutting process.

4.2.2 List the advantages of the use of the oxyacetylene apparatus over the plasma cutter.

4.2.3 Name the important safety measures to adhere to when working with the oxyacetylene cutting apparatus.

4.3 The picture below shows the MIG welding torch.

4.3.1 Describe the process when replacing a worn welding tip.

4.3.2 Explain the use of anti-spatter spray during the MIG welding process.

4.3.3 Give FOUR reasons for the welding wire not running smoothly through the welding hose.

4.4 The table below shows three measures that can prevent different joints from moving during welding. Complete the table by naming the preventative measures in QUESTIONS 4.4.1 to 4.4.3.

4.5 You have been requested to design and manufacture a door for a horse stable.

The dimensions of the stable opening are 2000 mm x 1000 mm.

Two hinges and a latch must be attached to the door.

Given:
• Square tubing: 50 mm x 50 mm x 3 mm
• Round bar: 10 mm
• Mild steel plate: 1,000 mm x 1,000 mm x 3 mm

Use the information above and draw a sketch of the stable door.

4.6 A farmer must repair a broken implement in a field. Explain why he/she would use an inverter welder powered by a generator rather than a MIG welder.

The diagram below shows the cutting nozzle of a plasma-cutting machine that is used to cut stainless steel - NSC Agricultural Technology - Question 4 - 2022 - Paper 1

Worked Solution & Example Answer:The diagram below shows the cutting nozzle of a plasma-cutting machine that is used to cut stainless steel - NSC Agricultural Technology - Question 4 - 2022 - Paper 1

Identify part A.

Identify the problem indicated by arrow B that can occur when thick materials are cut with the plasma-cutting machine.

Suggest an action to address the problem identified in QUESTION 4.1.2.

Name TWO types of gases that are commonly used in the plasma-cutting process.

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