What are the welding conditions for titanium metric screws? Industrial titanium screws can be welded by contact welding without special preparation. When there is a relatively thick oxide film, it needs to be cleaned mechanically or removed in a 5% hydrofluoric acid solution.
Arc welding of titanium screws is carried out in clean gas, and direct current can be used to achieve better results. At this time, the tungsten electrode is the cathode.
The direct welding of titanium screws with nickel, Bromo-chromium alloys, and other nickel-containing alloys is not suitable because of the formation of harmful fusible eutectics. Between materials of different properties, molybdenum, tantalum, or niobium spacers with a thickness of fifteen to twenty microns are required. This method can eliminate the contamination of the connection area by other elements because the dissolution process does not require special solder and pre-metallization. It can obtain a high-quality vacuum dense connection, this method is promising for titanium screws.
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