Explain the following welding processes: Forge welding process, Friction welding. Give two causes each on the…

Question

Explain the following welding processes: Forge welding process, Friction welding. Give two causes each on the following defects; Lack of penetration, Lack of fusion, Porosity.

ScanSolve AI Tutor · Accepted Answer

a) i) Forge welding process Step 1: Explain Forge welding. Forge welding is a solid-state welding process where two pieces of metal are joined by heating them to a high temperature (below their melting point) and then applying pressure (e.g., hammering) to force them together. ii) Friction welding Step 1: Explain Friction welding. Friction welding is a solid-state welding process that generates heat through mechanical friction between a rotating workpiece and a stationary workpiece, followed by the application of an axial force to forge the parts together. b) i) Lack of penetration Step 1: Give two causes for lack of penetration. Insufficient welding current or heat input Too fast travel speed ii) Lack of fusion Step 1: Give two causes for lack of fusion. Insufficient heat input Improper cleaning of the joint (e.g., presence of oxides or scale) iii) Porosity Step 1: Give two causes for porosity. Inadequate shielding gas coverage or contaminated shielding gas Contaminants on the base metal (e.g., rust, oil, paint)

Explain the following welding processes: Forge welding process, Friction welding. Give two causes each on the following defects; Lack of penetration, Lack of fusion, Porosity.

Step-by-step solution

Part a(i)· 1 step

Explain Forge welding.

Part a(ii)· 1 step

Explain Friction welding.

Part b(i)· 1 step

Give two causes for lack of penetration.

Part b(ii)· 1 step

Give two causes for lack of fusion.

Part b(iii)· 1 step

Give two causes for porosity.

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