4.1 Noem TWEE eienskappe van ELK van die volgende staalstrukture:
4.1.1 Sementiet
4.1.2 Perliet
4.2 FIGUUR 4.1 toon 'n diagram - NSC Mechanical Technology Welding and Metalwork - Question 4 - 2017 - Paper 1
Question 4
4.1 Noem TWEE eienskappe van ELK van die volgende staalstrukture:
4.1.1 Sementiet
4.1.2 Perliet
4.2 FIGUUR 4.1 toon 'n diagram. Beantwoord die vrae wat volg.
FIG... show full transcript
Worked Solution & Example Answer:4.1 Noem TWEE eienskappe van ELK van die volgende staalstrukture:
4.1.1 Sementiet
4.1.2 Perliet
4.2 FIGUUR 4.1 toon 'n diagram - NSC Mechanical Technology Welding and Metalwork - Question 4 - 2017 - Paper 1
Step 1
4.1.1 Sementiet
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Answer
Sementiet is hard en bros. Dit het 'n hoë hardheid wat dit minder buigsaam maak.
Step 2
4.1.2 Perliet
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Answer
Perliet het goeie smeebaarheid, is baie hard, en is sterk en taai.
Step 3
4.2.1 Wat word die diagram in FIGUUR 4.1 hierbo genoem?
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Die diagram in FIGUUR 4.1 is bekend as die Ysterkoelstof - ewewigsdiagram.
Step 4
4.2.2 Benoem A–E op die diagram getoon.
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Answer
A = Ferriet
B = Ousteniet + Ferriet
C = Ousteniet
D = Ousteniet + Sementiet
E = Ferriet + Sementiet
Step 5
4.2.3 Noem TWEE eienskappe van C op die diagram.
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Answer
Die eienskappe van C (Ousteniet) is:
Dit is sag.
Dit het 'n fyn gegrainstruktuur.
Step 6
4.3 Wat is die laer kritieke temperatuur vir koolstofstaal met 'n koolstofinhoud van 0,87%?
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Answer
Die laer kritieke temperatuur vir koolstofstaal met 'n koolstofinhoud van 0,87% is 720 °C.
