Traditional Culture Encyclopedia - Traditional customs - How much is a catty of titanium alloy?
How much is a catty of titanium alloy?
600 yuan, the most expensive titanium alloy, will not exceed one kilogram, while the price of titanium alloy scrap is about one kilogram in 50 yuan. Titanium alloy products are expensive because of its high processing cost. Titanium alloy material is recognized as one of the most difficult materials in machining industry. Its processing cost is several times to dozens of times of its material value.
Titanium alloy has "low thermal conductivity", which means that heat transfer is slow. If the heat transfer is slow, the heat will accumulate locally during the machining process, which is easy to burn the tool. Therefore, in order not to generate a lot of heat when processing titanium alloy, the cutting speed of the tool is very slow, so the processing time is very long.
In order to improve the processing efficiency of titanium alloy, some large factories will use liquid nitrogen for processing and cooling. In addition, the tiny titanium alloy fragments cut during machining will burn at a temperature of about 200 degrees if they are not cooled well.
Waste titanium per kilogram 100 yuan. There are many kinds of titanium alloys, and titanium alloy products are expensive because of its high processing cost. The raw material of titanium is now 5. 1 ten thousand tons, which is about TC4 alloy 120 yuan /kg. Its outstanding feature is low density. I don't know if you want to make titanium alloy or titanium alloy products. The most expensive titanium alloy in the metal material market will not surpass 600 yuan.
Telecommunication equipment is widely used, with many brands and models of titanium alloy materials and stable organization. It depends on which titanium alloy products are expensive. The reason is that the composition is clear, hundreds or even dozens of kilograms, chemicals, castings, magnesium alloys. Take magnesium alloy as an example. Strong antioxidant capacity. The melting method and formula are different.
Matters needing attention in purchasing titanium alloy:
1, due to the small elastic modulus of titanium alloy, the clamping deformation and stress deformation of the workpiece are large during machining, which will reduce the machining accuracy of the workpiece; When the workpiece is installed, the clamping force should not be too large, and auxiliary support can be added if necessary.
2. If cutting fluid containing hydrogen is used, hydrogen will be released at high temperature during cutting, which will be absorbed by titanium and cause hydrogen embrittlement; It may also cause stress corrosion cracking of titanium alloy at high temperature.
3. Chloride in cutting fluid may decompose or volatilize toxic gas when it is used, so safety protection measures should be taken when it is used, otherwise it should not be used; After cutting, the parts should be thoroughly cleaned with chlorine-free cleaning agent in time to remove chlorine-containing residues.
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