The high quality of titanium welded tube needs to be ensured by the high precision of its production equipment, which are the manufacturing and processing precision and assembly precision of the equipment and the guiding ideology of the structure design respectively. First of all, titanium commonly used equipment manufacturing and processing accuracy and assembly accuracy of the two complement each other and promote each other. If the installation accuracy of a titanium component does not reach the target should require the manufacturer to re-process, without using temporary measures such as gaskets to solve. If the equipment processing accuracy and assembly accuracy is not up to standard, will lead to titanium welded pipe production process, the rack and roll jumping large, unstable operation.
Benchmark end accuracy control, benchmark surface flatness of 0.025 mm. and for the structural design guidelines, the box structure of the base, the casting of the plaque frame, forming - sizing unit between the tension balance and other designs to ensure the stability of the overall operation of the welded pipe production line. The detail design is even more important, such as the selection of bearing structure form, the choice is tapered roller bearings, rather than roller ball bearings.
Titanium tube in the welding needs to use a closed welding chamber, because the chemical nature of titanium metal is very active, even at high temperatures, and nitrogen, hydrogen, oxygen and other elements with high affinity, very easy to oxidation. Studies have shown that in the protection of argon gas with a purity of 99.99% or more, the welding effect of titanium is relatively satisfactory, and the weld does not appear oxidation and other discoloration. Titanium welded tube for reasonable welding process requirements are very high, if titanium welding process and titanium raw material quality does not match, will lead to titanium weld at the tissue grain roughness, causing plasticity and fracture toughness to reduce the weld strength. The higher the hardness of the titanium strip material, the more difficult the cold bending forming, the greater the rebound, will also intensify the wear and tear of the titanium roll die, reducing the service life of the die.
