How to use the mechanical and physical properties of titanium in titanium processing

(1) The elastic modulus of titanium is relatively low relative to its tensile properties, so a larger springback allowance must be considered in the pressing and roller operations. It is precisely because of the lower elastic modulus that in order to achieve the same degree of stability, the cross-section of the titanium part is slightly larger than that of the same steel part.

(2) Titanium is easy to machine, but considering its seizure tendency (larger than stainless steel) and low thermal conductivity, it is necessary to appropriately improve the commonly used machining technology and the design of threads and bearing surfaces. At least a rigid machine tool, a sharp tool, a slow speed, a large amount of cutting, and room for chip removal are also recommended. It is also recommended to use a large amount of cooling lubricant.

(3) The thermal expansion coefficient of titanium is 75% of that of carbon steel. Special attention should be paid to this when combining these two materials in equipment design and manufacture.

(4) Since titanium is an active metal, when heated to above 600 °C, it is easy to combine with oxygen in the air, so it is generally not recommended for long-term use of Titanium Alloy Threaded Rod above this temperature.

(5) When the temperature of industrial pure titanium exceeds 150~200℃, the mechanical strength decreases rapidly.

(6) The diffusion rate of hydrogen in titanium exhaust flange is faster than that of oxygen, so before hot working, the heating furnace used should have a slightly oxidizing atmosphere, so that although a relatively thin oxide film will be produced, it avoids the possible damage caused by hydrogen. Deep pollution.

(7) The softer industrial pure titanium plate is easy to be cold formed after annealing treatment; the harder industrial pure titanium and Ti2.5Cu require medium temperature processing, and the processing temperature for Ti6Al4V is preferably 600~700℃.

(8) Composite plates can be obtained by explosive welding of thin titanium plates and thick steel plates, which can be used to manufacture high-pressure, high-temperature vessels and heat exchangers. But it is not economical to use it to replace the whole titanium or the titanium lining plate of the suit.