<P> Welding is a fabrication process that joins materials , usually metals or thermoplastics , by causing coalescence . This is often done by melting the workpieces and adding a filler material to form a pool of molten material that cools to become a strong joint , but sometimes pressure is used in conjunction with heat , or by itself , to produce the weld . </P>
<P> Welding is a fabrication process that joins materials , usually metals or thermoplastics , by causing coalescence . This is often done by melting the workpieces and adding a filler material to form a pool of molten material that cools to become a strong joint , but sometimes pressure is used in conjunction with heat , or by itself , to produce the weld . </P>
the operation of joining two or more parts together by molten metal is called
the operation of joining two or more parts together by molten metal is called
Welding
Welding