What is a titanium wire

What is a titanium wire

What is a titanium wire?

Generally, titanium alloy wire and pure titanium wire are collectively referred to as titanium wire. Titanium wire is a broad term. Titanium wire has its detailed classification and application fields under different classifications. Different titanium wires have different properties and application directions. Both pure titanium wire and titanium alloy wire have their unique advantageous properties, which are mainly due to their materials – titanium and titanium alloy. The performance of titanium is superior, and the role of titanium and titanium products is particularly extensive. The most common titanium products in life are titanium rod, titanium plate, titanium standard parts, titanium dioxide and titanium wire. With the continuous research and development of titanium, the application field of titanium is gradually expanding, and there are more and more titanium, titanium alloys and various titanium products.

Generally speaking, titanium and titanium alloy wires refer to titanium products supplied in the form of disk and straight wires. In terms of diameter and size, the division standard of titanium wire and titanium rod is not strict, and different countries have different standards. China’s standard “GB3623-83” on wire only shows that the diameter of titanium and titanium alloy wire is not more than 6mm.

Classification of titanium wires

According to different properties, titanium and titanium alloys can prepare wires with different use requirements, which are generally divided into: pure titanium wire, titanium alloy wire, pure titanium glasses wire, titanium straight wire, titanium welding wire, titanium hanger wire, titanium disc wire, titanium bright wire, medical titanium wire and titanium nickel alloy wire, each of which has different uses. For example, pure titanium eyewear wire is mainly used to make eyewear bracket, titanium hanger wire is used to hang weight, and titanium nickel alloy wire is commonly used as memory alloy material.
Titanium and titanium alloy wire products are generally hard (y) [i] and annealed (m) [II], and the surface can be divided into pickling [III] surface and bright surface.

• Titanium wire – pure titanium wire, generally TA1, TA2, TA3, TA4, American brand GR1, Gr2, GR3, GR4;

• Titanium alloy wire – generally TA11, ta9, TA10, TC4, American brand GR7, Gr12, GR5;

• Pure titanium spectacle wire – pure titanium spectacle wire, which is used as raw material for spectacle support;

• Titanium straight wire – compared with the winding state of ordinary coiled wire, titanium straight wire is in a thin rod shape without bending;

• Titanium welding wire – the welding material used for welding titanium materials. Generally, titanium welding wire is used for welding connection with the same brand and material;

• Titanium hanger wire – wire used for load-bearing and hanging reuse;

• Titanium coil wire – compared with titanium straight wire, titanium coil wire is wound;

• Titanium bright wire – the surface of titanium wire is bright titanium wire, which is used in scenes where the surface needs to be bright and free of oxide film;

• Medical titanium wire – titanium wire for medical use, which meets the medical brand standard, and can be implanted into organisms without toxin, rejection and strong biological affinity;

• Titanium nickel alloy wire – the alloy of titanium and nickel. It has many kinds and is commonly used as memory alloy material.

Application of titanium wire

Titanium wire also perfectly “inherits” the advantages of titanium and titanium alloy. It has a series of excellent characteristics, such as good corrosion resistance, high specific strength, non-magnetic, high biocompatibility, low impedance to ultrasonic and good shape memory function.
Therefore, titanium and titanium alloy wires are widely used in aerospace, petrochemical industry, medical and health care, automobile, construction, sports and leisure products and many other fields.
In recent years, due to its continuous development and increasing variety, it provides more choices for its application in high-performance industrial products and consumer goods.

• 1. At present, more than 80% of titanium and titanium alloy wires are used as welding wires, such as welding of various titanium equipment, welded pipe, repair welding of turbine disk and blade of Aerojet engine, welding of gearbox, etc.

• 2. Due to its excellent corrosion resistance, titanium wire has been widely used in chemical, pharmaceutical, papermaking and other industries. It can be woven into mesh as seawater filter screen, purified water filter screen, chemical filter screen and so on.

• 3. Titanium and titanium alloy wires are also used to manufacture fasteners, load-bearing components, springs and so on because of their good comprehensive properties.

• 4. In the medical and health industry, due to its excellent biocompatibility, titanium and titanium alloy wires are used to manufacture medical devices, crown fixation, skull fixation, etc.

• 5. Some titanium alloy wires with shape memory function, such as titanium nickel alloy wires, are used to make satellite antennas, shoulder pads for clothes, women’s bras, glasses frames, etc.

• 6. In electroplating and water treatment industries, titanium and titanium alloy wires are used to make various electrodes.

With the development of national economy, the demand for titanium and titanium alloy wire is increasing. At present, it is in a state of short supply and has great development potential.

Main standards and grades of titanium wire

The main standards are GB/T, GJB, AWS, ASTM, AMS and JIS. Common brands TA0, TA1, TA2, TA3, TA4, TA5, TA6, TA7, TA9, TA10, TC1, TC2, TC3, TC4, TC6, TC11, GR1, Gr2, GR3, GR5, Ti6Al4VELI, Ti6Al7Nb, Ti13nb13zr, Ti1533. The surface has pickling surface and bright surface. Due to its low density, high specific strength and good corrosion resistance, titanium wire is used in military, medical, sporting goods, glasses, earrings, electroplating hangers and welding wires. So far, titanium is still in short supply and has great development potential. Titanium wire is also widely used in civil applications.

Specification of titanium wire

• A. Titanium wire specification: φ 0.8- φ 6.0mm

• B. Specification of titanium wire for glasses: φ 1.0- φ 6.0mm special titanium wire

• C. Titanium wire specification: φ 0.2- φ Special for 8.0mm hanger

Titanium wire rolling process

Titanium and titanium alloy titanium wire rolling is a coiled or single wire product obtained by drawing with titanium and titanium alloy wire blank (coiled or single) as raw material, including titanium iodide wire, titanium molybdenum alloy wire, titanium tantalum alloy wire, industrial pure titanium wire and other titanium alloy wires. Titanium iodide wire is used in instrument, instrument, electronics and other industrial departments. Ti-15Mo alloy wire is the suction source material of ultra-high vacuum titanium ion pump. Ti-15ta alloy line is a getter material for ultra-high vacuum industrial sector. Industrial pure titanium and other titanium alloy lines include industrial pure titanium line, ti-3a1 line, ti-4a1-0.005b line, ti-5ai line, ti-5al-2.5sn line, ti-5al-2.5sn-3cu-l.5zr line and ti-2a1 line_ 1.5mn wire, ti-3a1-1.5mn wire, ti-5a1-4v wire, Ti-6A1-4V wire, etc. are used as corrosion-resistant parts, electrode materials, welding materials, etc. high strength TB2 and Tb3 alloy wires are used in aviation and aerospace fields.

Rolling process parameters of titanium and titanium alloy titanium wire

• (1) Heating system and final rolling temperature. β The heating temperature before rolling is slightly lower than the (a + P)/P transformation temperature. The rolling process is completed in a + P phase zone《 The A-type titanium alloy is heated in the a + P phase region（ The heating temperature of type 3 titanium alloy is higher than the P transition temperature. The heating time is calculated as 1 ~ 1.5mm/min. The heating temperature and final rolling temperature of titanium and titanium alloy bars before rolling are basically the same as those of dairy bars.

• (2) Selection of other process parameters. Due to the large output of titanium and titanium alloy rolled profiles, the product length should not be too short and the rolling speed should not be too large. In the actual production process, the rolling speed is generally 1 ~ 3m / s.

• (3) According to the deformation resistance, width spread and elongation of titanium alloy, the roll pass suitable for various steel profiles of titanium alloy is selected to roll titanium alloy profiles. If the volume of titanium alloy profiles is large, a special roll pass for titanium alloy can be designed according to the characteristics of titanium alloy to roll titanium alloy profiles.

Drawing process of titanium and titanium alloy wire

Under the action of drawing force, the wire rod or wire blank is pulled out from the die hole of the drawing die to produce small section steel wire or non-ferrous metal wire. Wire with different section shapes and sizes of various metals and alloys can be produced by drawing. The drawn wire has accurate size and smooth surface, and the drawing equipment and die used are simple and easy to manufacture. The deformation index of titanium wire during drawing decreases and the length increases. The cross-sectional area and length of metal wire before and after drawing are expressed by F, F, l and L respectively. The condition of drawing process is usually expressed as: the ratio K of and is called the safety factor of drawing process. When drawing ultra-fine metal wire with wire diameter less than 0.05mm, it is difficult to pass through the die. In order to improve the stability of the drawing process, reduce the times of breaking and passing through the die, and improve the drawing production efficiency, the safety factor K value can be greater than 2.0. The reference value of safety factor K in the drawing process of drawing different wire diameters is as follows:
According to the temperature of the metal during drawing, the drawing below the recrystallization temperature is cold drawing, the drawing above the recrystallization temperature is hot drawing, and the drawing above the room temperature and below the recrystallization temperature is warm drawing. Cold drawing is the most common drawing method used in wire and wire production. During hot drawing, the metal wire shall be heated before entering the die hole. It is mainly used for drawing high melting point metals such as tungsten, molybdenum and other metal wires. During warm drawing, the metal wire also needs to be heated to the temperature within the specified range by the heater before entering the die hole for drawing. It is mainly used for drawing zinc wire and alloy wire difficult to deform, such as high-speed steel wire and bearing steel wire. According to the number of molds through which the metal wire passes at the same time in the drawing process, the drawing through only one mold is single pass drawing, and the drawing through several (2 ~ 25) molds successively is multi pass continuous drawing. Single pass drawing has low wire speed, low productivity and labor productivity. It is often used for drawing large wire diameter, low plasticity and special-shaped wire and wire. Multi pass drawing has high wire speed, high degree of mechanization and automation, high productivity and labor productivity. It is the main way of wire and line production. It is also divided into non sliding continuous drawing and sliding continuous drawing. According to the lubricant state used in drawing, wet drawing uses liquid lubricant and dry drawing uses solid lubricant. According to the section shape of drawn metal wire, there are circular wire drawing and special-shaped wire drawing. According to the pulling force acting on the drawn wire, there are positive pulling force and reverse pulling force. There are also special drawing, such as roll die drawing, etc.
Drawing process characteristics of titanium and titanium alloy wire the stress state of metal wire drawing is the three-dimensional principal stress state from two-dimensional compressive stress to tensile stress. Compared with the principal stress state in which all three directions are compressive stress, the drawn metal wire is easier to reach the plastic deformation state. The deformation state of drawing is the three-dimensional main deformation state from two-dimensional compression deformation to tensile deformation. This state is unfavorable to the plasticity of metal materials, and it is easy to produce and expose surface defects. The pass deformation of wire drawing process is limited by its safety factor. If the pass deformation is small, there are more drawing passes. Therefore, multi pass continuous high-speed drawing is often used in wire production.

Source: China Titanium Wire Manufacturer – Yaang Pipe Industry Co., Limited (www.steeljrv.com)

(Yaang Pipe Industry is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)

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