Because of various titanium alloy that is unique in physics, chemistry, mechanics, corrosion, etc. and process performance, and therefore, in structural design structure can not be blindly applied common ferrous and non-ferrous metals other devices. Because of the mechanical properties of titanium and titanium alloys and steels of different, titanium yield is high, narrow plastic degeneration, stamping and cold things cold-formed larger rebound, and called titanium device structure to be simple, but good structure welded joints near the surface for easy cleaning, easy to use gas shielded arc welding, protect the positive quality of welded joints on the back;? titanium can and wrong, Ni, Tam, lead solder metal phase, not brittle after welding, which is due to these metals Titanium solubility great. However, titanium and steel and other metals each melt characteristics are poor, it can not be directly titanium and other metals welding. To connect only through bonding, soldering, welding and bolting explosion;? Titanium toughness and fracture toughness of the poor, it is to maintain the continuity of the structure and smooth welds at design time, to avoid stress concentration; ④ titanium plastic deformation range is narrow, but there is a clear and hardening. So bending and flanging titanium parts usually larger bend radius, with a smaller rate when expander expander; ⑤ titanium chloride solution is easy to produce in the crevice corrosion, crevice corrosion, but titanium and temperature, chloride concentration, PH value and the size of the gap has a close relationship.