Why is titanium not expensive, but titanium alloy products are very expensive?

There are several reasons:

1. Titanium sponge must be re-cast in an electric furnace to become a usable titanium ingot, and titanium is very active at high temperatures and is difficult to process. ;

2. Pure titanium is very soft and is generally not suitable for use as titanium products, so other elements need to be added. For example, titanium-64, which is commonly used in the aviation industry, needs to be mixed with many other elements to improve the metal properties. (I don’t know what to add)

3. Titanium is difficult to machine. This thing is not actually hard, but it is very "sticky". I used a file to file the titanium-64 handle, and the lines on the file were quickly filled with scraps. It is said that because the speed is low, titanium cannot be cut at all. If the speed is too high, the titanium will oxidize if it is too hot. Ordinary machining centers cannot process titanium alloy products at all. . . . . . .

4. It is even more difficult to use titanium to make glasses. The structure of the frame is very thin and requires a lot of fine processing, which is definitely a big challenge for a material like titanium, which is particularly difficult to process. In addition, titanium alloy frames also involve titanium alloy welding technology, which is more technically difficult. How difficult is titanium alloy processing technology? Let’s put it this way, people who design aircraft all over the world will definitely not use titanium alloys as long as they can use aluminum alloys through structural optimization, because titanium alloys are too difficult to process.

How difficult is it to weld titanium alloy metal?

Up to now, the titanium alloy welding technology of Maozi and Meidi has passed the test and can be used on aircraft. Oh, by the way, I also got the titanium alloy welding technology from Maozi, and it is said that it is pretty good now.

Maozi’s titanium alloy welding skills were good and there was plenty of titanium ore, so he built several submarines out of titanium alloy. The one with the largest diving depth exceeded 1,000 meters, which is still unrivaled in the world.