| 摘要 |
A method of nano-welding of metal pipes is described, wherein, in the first stage, the preliminary preferably mechanical processing of the front surfaces of pipes by the help of the cutter is made, in the second stage, the front surfaces of metal pipes are covered with hydrocarbons preferably liquid or in the form of pastes and gels, which protect against oxidation, and then their faces are connected, previously centring, preferably by applying a compressive force, 1-7 kg / mm 2 , and next the contact areas are heated up to achieve a temperature of about 0.75 to 0.95 of temperature of melting point of the metal, wherein after reaching a heating temperature of Ac3 point of the iron-carbon diagram of value depended on the type of steel, an additional pressure force is used-preferably about 1-2 kg / mm 2 . |
