Classification and development of titanium wire
1. Classification of titanium wire
Titanium can be divided into pure titanium and titanium alloy according to whether it contains alloying elements, and titanium alloy can be divided into α titanium alloy and near α type alloy, (α+β) type alloy, near β type according to its composition and room temperature structure. Alloy and beta alloy. Titanium and titanium alloys can be prepared according to the difference in properties. The finished titanium and titanium alloy wires are generally in a hard (Y) and an annealed state (M).
2. Application of titanium wire
Titanium and titanium alloys have good corrosion resistance, high specific strength, non-magnetic properties, high biocompatibility, low impedance to ultrasonic waves, high sound transmission coefficient, hydrogen storage and good shape memory function. The excellent characteristics of important use values have made important use in many fields such as aerospace, petrochemical, medical and health, automotive, construction, and sports and leisure products. Moreover, in recent years, due to its continuous development, the variety has become more and more, which provides more choices for high-performance industrial products and consumer products. The following is a systematic introduction to the application status of titanium and titanium alloy wire.
When the titanium standard was uniformly revised into a national standard in 1983, the name of the titanium welding wire standard was simply removed, and the GB3623-83 "titanium and titanium alloy wire" standard was formulated. The standard stipulates that the chemical composition of the wire meets GB3620-83 (titanium and The specification of titanium alloy grades and chemical composition), that is, the chemical composition is completely the same as other deformed titanium and titanium alloy materials. "Titanium and Titanium Alloy Wire" stipulates: "This standard applies to titanium and titanium alloy round wire materials for corrosion resistant parts, electrode materials and welding materials." That is, it is expressly stipulated that a common structural wire material is used as the titanium welding wire.
From the perspective of titanium standards, the titanium materials produced in China have basically reached the advanced level of foreign titanium materials in terms of chemical composition or mechanical properties. However, there is no real titanium wire standard and product. Titanium structural wire is used as the welding wire, which makes China's titanium welding wire the lowest level in the world. The amount of titanium welding wire is only about 2% of the amount of titanium material, which means that the low-quality titanium welding wire of 2% reduces the plastic reserve of the entire titanium pressure vessel, which greatly reduces the quality level of the titanium pressure vessel in China. For users of titanium pressure vessels, the investment cost of titanium pressure vessels is high. The use of low-quality titanium welding wire does not save the cost of one investment, but it has obtained a low-quality titanium pressure vessel. It should be said that Economically, it is very uneconomical.