CSWIP Notes – Weldability of steel
The questions and answers based on the document no. WIS5-90516b - CSWIP 3.1 Welding Inspector. These question are separated by each section, it makes easy for reading and learning.
Q_17.1: Using a stabilized stainless steel will reduce the risk of?
Answer: Weld decay
Learn more: WIS5 Section 17.6
Q_17.2: A long centerline crack has been detected in a submerged arc weld bead this may be due to
Answer: Weld bead is deep and narrow.
Learn more: WIS5 Section 17.4
Q_17.3: A steel designated as “Z” quality will have:
Answer: Through-thickness ductility values > 20%
Learn more: WIS5 Section 17.5.3 (reference) and material specification
Q_17.4: Which material is pre-heating most likely to be required?
Answer: most high strength alloy steels (HSAL) is required pre-heat before welding either than low carbon steel, mid-steel or austenitic stainless steel. Heat treatment may be applied to reduce stress after welding.
Q_17.5: In the welding of austenitic pipe work, main purpose of purging argon?
Answer: Prevent oxidation of the rood bead
Q_17.6: In the welding of Austenitic stainless steels, the electrode and plate material can be purchased with LOW carbon contents. The reason for this is to prevent?
Answer: The formation of chromium carbides.
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