According to a different procedure for seamless tube manufacturing, it is similar to the longitudinal joint of the metal tube, welded metal tube is usually separated into measurement, welding thin-walled tube, transformer cooling tube and so on. Smooth in use with different value and part according to the appropriate technique to be used and welding, the welding procedure used and the type of attention, according to certain manufacturing procedure required for manufacturing and handling.

Seamless metal tube with great frequency welding procedure is relatively easy, fast, ongoing manufacturing features in the development procedure is easy and convenient, in accordance with the appropriate manufacturing and handling technology. Smooth in municipal construction, petrochemical, mild industry and other areas have wide variety of applications, used for moving low-pressure fluid or made into a variety of technological innovation components and mild industrial products, in different areas play an important part and value, to show excellent qualities and performance.

Friction mix welded combined parts with no pores, excellent feed dimension, exhaustion qualities, excellent tensile and flexural qualities, welding, no reasoning of dust, no splash, economical, no wire and protecting gas, welding residual stress and deformation, etc., which is a excellent usefulness soldering technique. Cu-Cr metal has great durability, solidity, excellent electric conductivity, heat conductivity and deterioration level of resistance, which is the preparation of level of resistance welding electrodes, metal shapes, large high-speed generator information bar, equipment, etc. A preferred material for guiding. The generator information bar, electric resources manufacturing procedure of guiding the need for copper-chromium materials for welding, currently mainly used welding, stress welding and brazing and other methods.

Its physical and chemical qualities as well as the birdwatcher of impurity elements, which combined prone porosity, durability, deterioration level of resistance decrease and the welding deformation problems. Currently on rubbing mix welding of birdwatcher -chromium metal microstructure and qualities of welded combined parts are not many reports, for each pair of strong remedy and aging condition copper-chromium metal rubbing mix welded combined microstructure, solidity and electric conductivity relative study of rubbing mix welding to provide trial evidence for chromium metal.

Solid remedy of birdwatcher -chromium metal welded combined matrix feed rough, nugget area is excellent equiaxed feed warm involved area weld nugget dimension a little bit larger than the area, and there is a certain circulation, warm involved area feed and matrix little difference; weld nugget area solidity up to 78HB, further from the weld middle reduced solidity, solidity until Scientology. Copper-chromium metal combined parts aged condition matrix structure irregular dimension equiaxed nugget area feed improvement, irregular distribution; feed warm involved area is pointed, with a certain circulation resistance; feed warm involved area than matrix a little bit raised; weld nugget area solidity highest 113HB, the further away from the middle of the weld reduced solidity, warm involved area solidity lowest 91HB, then retrieved to the substrate solidity.Nike Free