WELDING IMPORTANT INTERVIEW QUESTION & ANSWER

IMPORTANT WELDING  INTERVIEW QUESTION & ANSWER: 

Q: What is welding?

Ans: The process of joining two similar or dissimilar metals by fusion, with or without fusion, with or without application of pressure and with or without the use of filler metal

Q: How many type of welding?

Ans: Basically two types of welding are there

1)      Forge or pressure welding

2)      Fusion or Non Pressure welding

Other subclass welding are spot welding, Seam welding, Electric arc welding, Gas welding, thermit welding, Submerged  arc welding, TIG, MIG etc

Q: Write down the welding join name?

Ans: The commonly used joint in fusion welding are lap joint, butt joint, corner joint, edge joint, T-joint

Q: What is Arc welding?

Ans: It is a fusion welding process is which the welding heat is obtained from an electric arc struck between the work (base metal) and an electrode. The temperature of heat produced by the electric arc is of the order of 6000C to 7000C.

Q: What is MIG?

Ans: MIG means Metallic Inert Gas arc welding. In MIG welding electrode is consumable. The filler metal is deposited by the arc which is completely surrounded by an inert gas.

Q: What is TIG?

Ans: TIG means Tungsten Inert Gas arc welding. In TIG welding heat is produced from an arc between the non consumable tungsten electrode and the work piece. The welding zone is shielded by an atmosphere of inert gas supplied from a suitable source.

Q: What is submerged arc welding?

Ans: In submerged arc welding the arc is produced between a bare metal electrode and work piece. The submerged arc welding is mostly done on low carbon and alloy steel, but it may be used on many of the non ferrous metals.

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