Which process fuses two pieces of material using a heat process most commonly used with metal?

Which process fuses two pieces of material using a heat process most commonly used with metal?

• A. Welding
• B. Die casting
• C. Casting
• D. Moulding

Answer: (A)

Joining two pieces by heating them until they fuse is welding. This process uses heat (and often a filler material) to melt the edges of the metal parts so they flow together and form a strong, continuous joint. Die casting, casting, and moulding are all forming or shaping methods: they create a single piece from molten material or by injecting it into a mold, rather than bonding two pre-made pieces. So welding is the heat-based method specifically used to fuse two metal pieces.

Joining two pieces by heating them until they fuse is welding. This process uses heat (and often a filler material) to melt the edges of the metal parts so they flow together and form a strong, continuous joint. Die casting, casting, and moulding are all forming or shaping methods: they create a single piece from molten material or by injecting it into a mold, rather than bonding two pre-made pieces. So welding is the heat-based method specifically used to fuse two metal pieces.