5.1 Name FOUR machine tools used in the template loft. 5.2 FIGURE 5.2 below shows part of a roof truss. Label parts A–E. 5.3 Draw a neat sketch of a welding symbol indicating the following information on a T-joint done with arc welding: - The fillet weld on the other side is 6 mm in size. - The lengths of the weld beads are 40 mm each and the pitch of the weld is 90 mm. 5.4 Draw the following supplementary weld symbols indicating additional information about the weld: 5.4.1 Weld all round 5.4.2 Flush contour 5.4.3 Machine finish 5.5 A steel ring with an outside diameter of 600 mm must be fabricated from a 30 x 30 mm square bar. Calculate the mean circumference of the required.

NSC Mechanical Technology Welding and Metalwork Developments and templates: 5.1 Name FOUR machine tools used

5.1 Name FOUR machine tools used in the template loft - NSC Mechanical Technology Welding and Metalwork - Question 5 - 2022 - Paper 1

Question 5

5.1 Name FOUR machine tools used in the template loft. 5.2 FIGURE 5.2 below shows part of a roof truss. Label parts A–E. 5.3 Draw a neat sketch of a welding symb... show full transcript

Worked Solution & Example Answer:5.1 Name FOUR machine tools used in the template loft - NSC Mechanical Technology Welding and Metalwork - Question 5 - 2022 - Paper 1

Step 1

Name FOUR machine tools used in the template loft.

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Answer

Planer
Circular saw
Drilling machine
Jig saw

Additionally, a sanding machine or shears for cutting cardboard can be mentioned.

Step 2

Label parts A–E.

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Answer

A. Purlin B. Rafter C. Bracing member D. Main tie / Tie beam E. Gusset plate

Step 3

Draw a neat sketch of a welding symbol indicating the following information on a T-joint done with arc welding.

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Answer

The welding symbol consists of a horizontal line with a vertical line indicating the weld. The fillet weld size should be indicated as 6 mm and the lengths of the weld beads as 40 mm each. The pitch of the weld, which is 90 mm, will also be shown.

Step 4

5.4.1 Weld all round.

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Answer

The symbol for weld all round can be represented by a circle.

Step 5

5.4.2 Flush contour.

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Answer

The flush contour symbol can be depicted as two parallel lines.

Step 6

5.4.3 Machine finish.

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Answer

The machine finish symbol can be illustrated with the letter 'M'.

Step 7

Calculate the mean circumference of the required.

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Answer

To calculate the mean circumference, we first find the mean diameter.

Mean $ext{Ø} = ext{Outside Diameter} - ext{plate thickness} = 600 - 30 = 570 ext{ mm}$ .

Then, we use the formula for circumference:

Mean Circumference $= ext{π} imes ext{mean Ø} = ext{π} imes 570 ext{ mm} \\ ext{Mean Circumference} \\ ext{≈} 1790.71 ext{ mm}$ or approximately 1791 mm.

5.1 Name FOUR machine tools used in the template loft - NSC Mechanical Technology Welding and Metalwork - Question 5 - 2022 - Paper 1

Worked Solution & Example Answer:5.1 Name FOUR machine tools used in the template loft - NSC Mechanical Technology Welding and Metalwork - Question 5 - 2022 - Paper 1

Name FOUR machine tools used in the template loft.

Label parts A–E.

Draw a neat sketch of a welding symbol indicating the following information on a T-joint done with arc welding.

5.4.1 Weld all round.

5.4.2 Flush contour.

5.4.3 Machine finish.

Calculate the mean circumference of the required.

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