ZR60705 zirconium rod Zr705 zirconium tube for chemical anti-corrosion equipment

Material:

 Zirconium (Zr) Grades: Zr0 ZR1 Zr2 Zr4 ZR60705 60702

Executive standard: GB/T, ASTMB and related quantities: content ≥ 99.7%

Bars, cakes, rings, products are customized according to customer requirements

Process: forging, rolling, drawing

Thickness (mm) Width (mm) Length (mm)

Plate: 0.5-10 50-800 50-20

Foil: 0.03-0.09 30-150>200

Sheet: 0.1-0.5 30-400 30-10

Zirconium tube flare test

    The Zr-1 zirconium pipe for heat exchange shall be subjected to a flaring test. The flaring adopts a tool with a top core taper of 60 degrees. When the expansion rate of the inner diameter of the sample after flaring is 15%, the end of the sample shall not have cracks.

Ultrasonic testing of zirconium tubes

    Pipes shall be subjected to ultrasonic flaw detection. The acceptance of standard flaw (U-shaped) size and flaw detection results is in accordance with the relevant requirements of GB/T 12969.1.

Zirconium tube metallographic structure

    The average grain size of zirconium tube recrystallization annealed ZR1 tube should not be coarser than grade 7 in GB/T6394-2002

Zirconium is a rare metal with amazing corrosion resistance, extremely high melting point, hardness and strength of zirconium. It is used in aerospace, nuclear reaction, atomic energy and other fields. Its melting point is 1800 degrees, while the melting point of titanium is around 1600 degrees. . The melting point of zirconium dioxide is as high as 2700 degrees.

Zirconium tube industrial use:

1. Getter

    Like lithium and titanium, zirconium can strongly absorb nitrogen, hydrogen, oxygen and other gases. When the temperature exceeds 900 degrees Celsius, zirconium can absorb nitrogen violently; under the condition of 200 degrees Celsius, 100 grams of metal zirconium can absorb 817 liters of hydrogen, which is equivalent to more than 800,000 times that of iron. This characteristic of zirconium has been used. For example, in the electric vacuum industry, people use zirconium powder to coat the surface of the anode and other heated parts of electric vacuum components and instruments to absorb the residual gas in the vacuum tube to make a high vacuum tube. and other electric vacuum instruments, thereby improving their quality and extending their useful life.

2. Metallurgy

    Zirconium can also be used as a "vitamin" in the metallurgical industry to exert its powerful deoxidation, nitrogen removal and sulfur removal effects. As long as one thousandth of zirconium is added to the steel, the hardness and strength will be surprisingly improved; zirconium-containing armored steel, stainless steel and heat-resistant steel are used to manufacture high-end weapons such as armored vehicles, tanks, cannons and bulletproof plates. important material. When zirconium is mixed into copper and drawn into copper wire, the conductivity is not weakened, but the melting point is greatly improved, which is very suitable for high-voltage wires. Zirconium-containing zinc-magnesium alloy is light and durable, and its strength is twice that of ordinary magnesium alloys. It can be used in the manufacture of jet engine components.

3. Zirconium alloy

    Zirconium alloy is a non-ferrous alloy composed of zirconium as the matrix and other elements added. The main alloying elements are tin, niobium, iron and so on. Zirconium alloy has good corrosion resistance, moderate mechanical properties, low atomic thermal neutron absorption cross-section in high temperature and high pressure water and steam at 300 to 400 °C, and has good compatibility with nuclear fuels. Core structural material. In addition, zirconium has excellent corrosion resistance to various acids, alkalis and salts, and has a strong affinity with oxygen, nitrogen and other gases, so zirconium alloys are also used in the manufacture of corrosion-resistant parts and pharmaceutical machinery parts, in the electric vacuum and light bulb industry used as a non-evaporable getter.

    There are two types of zirconium alloys produced on an industrial scale: zirconium-tin series and zirconium-niobium series. The former is combined with Zr-2 and Zr-4, and the typical representative of the latter is Zr-2.5Nb. In zirconium-tin alloys, the alloying elements tin, iron, chromium and nickel can improve the strength, corrosion resistance and thermal conductivity of the corrosion-resistant film, and reduce the sensitivity of the surface state to corrosion. Usually Zr-2 alloys are used in boiling water reactors, and Zr-4 alloys are used in pressurized water reactors. In the zirconium-niobium-based alloy, the amount of niobium added reaches the corrosion resistance of the solid-solution zirconium alloy having the crystal structure of zirconium at the operating temperature. Zirconium alloy has isomorphous transformation, the crystal structure is body-centered cubic at high temperature, and hexagonal close-packed at low temperature. Zirconium alloy has good plasticity and can be made into pipes, plates, bars and wires by plastic processing; its weldability is also good and can be used for welding.

  4. Zirconium has a small thermal neutron capture cross section and outstanding nuclear properties. It is an indispensable material for the development of the atomic energy industry and can be used as a reactor core structural material. Zirconium can be used as an additive for steel deoxidation and desulfurization, and is also a component of armor steel, cannon steel, stainless steel and heat-resistant steel. Zirconium is an important alloying element of magnesium alloys, which can improve the tensile strength and processability of magnesium alloys. Zirconium is also a modifier of aluminum-magnesium alloys, which can refine grains. Zirconium dioxide and zircon are valuable compounds in refractory materials. Zirconium dioxide is the main material of ceramics and cannot be used as a heating material that resists high temperature oxidation. Zirconium dioxide can be used as an additive for acid-resistant enamel and glass, and can improve the elasticity, chemical stability and heat resistance of glass. Zircon has strong light reflection performance and good thermal stability, and can be used as sunscreen in ceramics and glass. Zirconium can absorb a large amount of oxygen, hydrogen, ammonia and other gases when heated, and is an ideal getter. For example, zirconium powder is used as a degassing agent in electronic tubes, and zirconium wire and zirconium sheets are used as grid brackets and anode brackets.

    Powdered iron mixed with zirconium nitrate can be used as glitter powder. Zirconium metal is used almost exclusively as the cladding for uranium fuel elements in nuclear reactors. It is also used to make photographic flashes, as well as containers and pipes, especially resistant to hydrochloric acid and sulfuric acid. Zirconium chemicals can be used as cross-linking agents for polymers