5.1 Name TWO advantages of using templates - NSC Mechanical Technology Welding and Metalwork - Question 5 - 2020 - Paper 1
Question 5
5.1 Name TWO advantages of using templates.
5.2 State ONE use of a template made from EACH of the following materials:
5.2.1 Thin metal
5.2.2 Hardboard
5.3 FIGUR... show full transcript
Worked Solution & Example Answer:5.1 Name TWO advantages of using templates - NSC Mechanical Technology Welding and Metalwork - Question 5 - 2020 - Paper 1
Step 1
Name TWO advantages of using templates.
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Answer
Templates improve production speed by providing a quicker means to mark materials, thereby increasing efficiency in manufacturing.
They ensure accuracy in production, allowing for uniformity and precision in the final products.
Step 2
State ONE use of a template made from EACH of the following materials:
5.2.1 Thin metal
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Thin metal templates are commonly used for profile cutting machines, allowing for accurate cutting of various shapes.
Step 3
5.2.2 Hardboard
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Hardboard templates are utilized for creating templates for gussets, ensuring consistent shapes and sizes during assembly.
Step 4
Label parts A–E.
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Answer
A. Rafter
B. Purlin
C. Internal bracing members / strut
D. Gusset plate
E. Main tie / Tie beam / Beam
Step 5
Calculate the dimensions of the required material to fabricate the steel ring.
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Answer
Calculate the mean thickness:
Mean heta = Outside diameter - plate thickness
Mean heta=280−12=268 mm.
Calculate the mean circumference:
Mean circumference = extπimesextmeanheta=extπimes268extmmightarrow841.95extmmightarrowextapproximately842extmm.
Step 6
What does the abbreviation SANS stand for?
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SANS stands for South African National Standards.
Step 7
Identify the resistance weld symbols in FIGURES 5.6.1 and 5.6.2 below.
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5.6.1 represents a foil seam, while 5.6.2 denotes a flash or resistance butt weld.
Step 8
State the meaning of the dimensions of the weld indicated in FIGURE 5.7 below.
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The dimensions indicate:
5 – size (width) of the weld,
25 – length of the weld,
50 – pitch of the weld.
Step 9
Identify the positions of the welds, as indicated by the welding symbols in FIGURES 5.8.1 and 5.8.2 below.
5.8.1
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The symbol in 5.8.1 indicates a weld on both sides of the joint.
Step 10
5.8.2
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The symbol in 5.8.2 signifies a weld on the arrow side of the joint.
