Bobine di titanio

Processo di produzione

Cold rolled titanium coil due to different production processes (or finished product surface) generally divided into cold rolled pickling surface titanium coil and cold rolled glossy titanium coil.

The manufacturing process of cold rolled pickling surface titanium coil of XRUN is: sponge titanium — melting — forging — laminazione a caldo — trattamento termico — shot blasting — hot rolled pickling white roll — laminazione a freddo — trattamento termico — shot blasting — pickling — edge cutting — inspection — cold rolled pickling white roll — packing and storage.

production process

In the production process, because the product is rolled twice, the oxide scale will be produced. Two heat treatment and shot blasting pickling are the treatment of the oxide scale on the surface of the product, so as to better ensure the quality of the product. Cold rolled pickling surface titanium coil is generally used in aerospace, industry and marine engineering. Compared with the former, cold rolled glossy titanium coil is more widely used. Similarly, there are two more steps in the production process of cold rolled titanium coil with glossy surface than pickling surface: degreasing annealing and straightening.

A causa della scarsa conduttività termica del titanio puro, L'emulsione con un buon effetto lubrificante e eccellenti prestazioni di raffreddamento è richiesta nel processo di laminazione, e la velocità di rotolamento non dovrebbe essere troppo veloce, al fine di prevenire l'alta temperatura del titanio puro e causare il fenomeno del "rullo adesivo", e "rullo adesivo" con conseguente superficie ruvida di titanio e scarsa qualità. L'acqua e l'olio residui sulla superficie della striscia di titanio si decompongono durante il processo di ricottura, che influenza la pressione parziale dell'ossigeno nel forno e fa sì che la reazione di decomposizione vada nella direzione opposta, formando ossidazione sulla superficie del nastro di titanio e influenzando la qualità di ricottura. Perché la ricottura della striscia di titanio prima della pulizia completa e della superficie della piastra di asciugatura. La velocità di sgrassaggio del nastro di titanio è generalmente di 20 m / min, e la velocità viene regolata in base alla qualità superficiale della striscia di titanio dopo lo sgrassaggio. Il raddrizzamento serve a garantire la planarità della piastra del prodotto.

Product parameters

The titanium coil is mainly used as a container for heating and cooling. titanium coil fixation is divided into two kinds of detachable and non-detachable, This depends on the medium's corrosion of the titanium coil. But mainly based on removable type, convenient maintenance and cleaning of titanium coil.

Application features
Excellent corrosion resistance in many media
Smooth surface, clean layer
Bassa densità, high strength and light weight
Bassa densità, elevata resistenza specifica
The density of metallic titanium is 4.51g/cm3, which is higher than that of aluminum and lower than that of steel, rame, and nickel, but the specific strength is at the top of the metal.

Resistenza alla corrosione
Titanium is a very active metal with a low equilibrium potential and a high tendency for thermodynamic corrosion in media. Tuttavia, titanium is actually very stable in many media. Per esempio, titanium is resistant to corrosion in media such as oxidative, neutral and weak reducibility. This is because titanium and oxygen have a great affinity. In air or oxygen-containing medium, a dense, strong and inert oxide film is formed on the surface of titanium to protect the titanium matrix from corrosion. Even if it is due to mechanical wear, it will quickly heal or regenerate. This shows that titanium is a metal with a strong tendency to passivation. The oxide film of titanium below the temperature of 315°C always maintains this characteristic.
In order to improve the corrosion resistance of titanium, surface treatment technologies such as oxidation, electroplating, plasma spraying, ion nitriding, ion implantation, and laser processing have been studied. Titanium oxide film played a role in enhancing protection and obtaining desired corrosion resistance. A series of corrosion-resistant titanium alloys such as titanium-molybdenum, titanium-palladium, and titanium-molybdenum-nickel have been developed to meet the needs of metal materials in the production of sulfuric acid, hydrochloric acid, methylamine solution, high-temperature wet chlorine, and high-temperature chloride. Titanium-32-molybdenum alloys are used in titanium castings. Titanium-0.3 molybdenum-0.8 nickel alloys are used in environments where crevice corrosion or pitting corrosion frequently occurs. Titanium-0.2palladium alloys were used locally in titanium equipment, and good results were obtained.

Good heat resistance
The new titanium alloy can be used long-term at 600 °C or higher.

Low temperature resistance
Low temperature titanium alloy represented by titanium alloys TA7 (Ti-5Al-2.5Sn), TC4 (Ti-6Al-4V) and Ti-2.5Zr-1.5Mo, etc.Its strength increases with decreasing temperature, but the plasticity changes are not large.It maintains good ductility and toughness at -196-253°C and avoids cold brittleness. It is an ideal material for cryogenic vessels and tanks.

Strong anti-damping performance
After metal titanium is subjected to mechanical vibration and electric vibration, its own vibration decay time is the longest compared with steel and copper metal. The use of this property of titanium can be used as a tuning fork, a medical ultrasonic vibrator vibration element, and an advanced sound speaker vibration film.

Non-magnetic, atossico
Titanium is a non-magnetic metal, it will not be magnetized in a large magnetic field, non-toxic and has good compatibility with human tissues and blood, so it is used by the medical community.

Tensile strength is close to its yield strength
This property of titanium shows that the yield strength ratio (tensile strength/yield strength) is high, indicating that the metal titanium material is poor in plastic deformation during forming. Since the ratio of the yield limit of titanium to the elastic modulus is large, the resilience of titanium when molded is large.

Good heat transfer performance
Although the thermal conductivity of titanium metal is lower than that of carbon steel and copper, due to the excellent corrosion resistance of titanium, the wall thickness can be greatly reduced, and the heat exchange mode between the surface and steam is droplet condensation, which reduces the thermal group. Titanium surface without scaling can also reduce the thermal resistance, so that the heat transfer performance of titanium is significantly improved.

Low modulus of elasticity
The modulus of elasticity of titanium is 106.4 GMPa at room temperature, which is only 57% of steel.

Suction performance
Titanium is a chemically very reactive metal that reacts with many elements and compounds at high temperatures. Titanium inhalation mainly refers to reaction with carbon, idrogeno, nitrogen, and oxygen at high temperatures.

Materiali
Can be divided into: TA1 [Content 99,6], TA2 [Content 99,5], TA9 [Titanium Palladium Alloy], TA10 [Ti-Mo-Ni alloy

Titanium
The density of metallic titanium is 4.51g/cm3, which is higher than that of aluminum and lower than that of steel, rame, and nickel, but the specific strength is at the top of the metal. Resistenza alla corrosione, titanium is a very active metal, its equilibrium potential is very low, the tendency of thermodynamic corrosion in the medium. Tuttavia, titanium is actually very stable in many media. Per esempio, titanium is resistant to corrosion in media such as oxidative, neutral and weak reducibility. This is because titanium and oxygen have a great affinity. In air or oxygen-containing medium, a dense, strong and inert oxide film is formed on the surface of titanium to protect the titanium matrix from corrosion. Even if it is due to mechanical wear, it will quickly heal or regenerate. This shows that titanium is a metal with a strong tendency to passivation. The oxide film of titanium below the temperature of 315°C always maintains this characteristic. In order to improve the corrosion resistance of titanium, surface treatment technologies such as oxidation, electroplating, plasma spraying, ion nitriding, ion implantation, and laser processing have been studied. Titanium oxide film played a role in enhancing protection and obtaining desired corrosion resistance. A series of corrosion-resistant titanium alloys such as titanium-molybdenum, titanium-palladium, and titanium-molybdenum-nickel have been developed for the production of sulfuric acid, hydrochloric acid, methylamine solution, high-temperature wet chlorine, and high-temperature chlorides, and for metal materials. Titanium castings use titanium-32 molybdenum alloys. Titanium-0.3 molybdenum-0.8 nickel alloys are used for crevice corrosion or pitting environments. Titanium-0.2 palladium alloys are used locally for titanium equipment. effect. Good heat resistance The new titanium alloy can be used long-term at 600°C or higher. Low-temperature-resistant titanium alloys such as titanium alloys TA7 (Ti-5Al-2.5Sn), TC4 (Ti-6Al-4V), and Ti-2.5Zr-1.5Mo, and so on., whose low-temperature titanium alloys increase in strength as the temperature decreases, Plasticity is not great. It maintains good ductility and toughness at -196-253°C and avoids cold brittleness. It is an ideal material for cryogenic vessels and tanks.