перевод пожалуйста не из переводчика
WELDING Welding is a process when metal parts are joined to- ether by the applieation of heat, pressure, or a combi ation of both.The processes of welding can be divided to two main groups pressure welding, when the weld is achieved by essure and heat welding, when the weld is achieved by heat t welding is the most common welding process used day Nowadays welding is used instead of bolting andveting in the construction of many types of structures, cluding bridges, buildings, and ships.It is also a basic ocess in the manufacture of machinery and in the motor d aircraft industries.It is necessary almost in all oductions where metals are used.The welding process depends greatly on the properties the metals, the purpose of their application and the ailable equipment.Welding processes are classified cording to the sources of heat and pressure used: gas lding, are welding, and resistance welding.other ming processes are laser welding, and electron-beam