1. Corrosion resistance of titanium:
Titanium has excellent corrosion resistance in the atmosphere, seawater, oxidizing atmosphere, and solution.
Titanium has good compatibility with the human body and is completely non-toxic. So far, no people who are allergic to titanium have been found.
Like all metals, titanium forms a galvanic couple in direct contact with dissimilar metals in a dielectric. Usually corrodes faster than other metals and should be avoided in design.
2. Design
When designing titanium components, it should not be simply replaced by titanium in the design of steel or other metal material components, but the most economical design should be made for the characteristics of titanium's high specific strength, good corrosion resistance, and lower elastic modulus than steel.
3. General processing:
1) Melting: absolutely must be carried out under the protection of vacuum or inert gas, and contact with most refractory materials should be avoided.
2) Heat treatment: It can be carried out in the air, but it needs to be carried out in vacuum or inert gas when the size is small or the finished product is required to have a bright surface. Vacuum heat treatment, heat treatment under hydrogen protection is strictly prohibited.
3) Thermal processing: It can be carried out in the air, generally without vacuum or gas protection.
4) Cold deformation processing: Industrial pure titanium and some titanium alloys can be processed by cold deformation, and the cold processing rate reaches 20%-65%.
5) Machining: Titanium is easier to machine, and its properties are similar to stainless steel, but its tendency to bite and low thermal conductivity should be considered. It is recommended to use cemented carbide tools and slow speed, small feed, large depth of cut, pay attention to chip removal and use a large amount of lubricant, and pay attention to fire prevention when storing fine chips.
4. Welding:
Contact point welding, seam welding, argon arc welding, plasma welding, electron beam welding, laser welding, needle welding, etc. are applicable to titanium and titanium alloys, and general arc welding and acetylene welding are strictly prohibited.
1) Component welds must have a good inert gas protection system.
2) Industrial pure titanium and ordinary medium-strength titanium alloys have good weldability, while high-strength titanium alloys have poor weldability.
3) Titanium cannot be welded with other metals, except for the following metals: zirconium, tantalum, niobium, molybdenum, vanadium, etc., which are basically weldable with titanium,
It can be welded with other metals by special methods.
5. Cost:
Although the price per kilogram of titanium is higher than that of other metals (equivalent to nickel-based alloys), the following factors should be considered, resulting in a significant drop in effective cost:
1) The density of titanium is only about half of that of steel, copper, and nickel-based alloys, and its specific strength is mostly higher than that of the above alloys, so the cost of titanium can be saved by half.
2) Titanium equipment generally does not leave corrosion allowance.
3) The advantages of corrosion resistance make titanium parts have a long service life, and the cost of production stoppage and maintenance loss is doubled, and the effective cost is also greatly reduced.
4) Titanium as a material for handicrafts and daily necessities will greatly improve their quality, and the added value of its products is very considerable.
Shaanxi Etermetal Co., Ltd. is a professional titanium materials supplier, which can provide qualified and high-quality products for buyers at home and abroad. Since the company was established for many years, customers have received numerous feedbacks. If you are looking for factory direct sales suppliers, welcome to consult!
