Nickel Ore
Nickel Ore
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Nickel Ore
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Nickel Ore
Detail
Nickel is a chemical element. The chemical symbol Ni, atomic number 28, atomic weight 58.69, belongs to group VIII of the periodic system. The ancient Egyptians, Chinese and Babylonians all used meteorite iron with high nickel content to make utensils, and the nickel content in the nickel ore produced in ancient China's Yunnan was very high. In 1751, Swedish A.F. Kronstede reduced red nickel ore with charcoal to obtain metallic nickel. Its English name comes from German Kupfernickel, which means fake copper. The content of nickel ore in the earth's crust is 0.018%. The main minerals of nickel ore are pyrite, silicon-magnesium-nickel ore, needle nickel ore or yellow nickel ore, red nickel ore and so on. The reserves of nickel in the manganese nodules on the seabed are very large, and they are important prospective resources of nickel.
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Profile
Profiles are objects with a certain geometric shape made of iron or steel and materials with certain strength and toughness through rolling, extrusion, casting and other processes. This kind of material has a certain appearance size, a certain shape of the section, and has certain mechanical and physical properties. Profiles can be used alone or further processed into other manufactured products, often used in building structures and manufacturing installations. The mechanical engineer can select the specific shape, material, heat treatment state, mechanical properties and other parameters of the profile according to the design requirements, and then divide the profile according to the specific size and shape requirements, and then further process or heat treatment to meet the design accuracy requirements. The material, specifications and dimensions of the profiles can refer to the corresponding national standards.
Steel Pipe
Steel pipes have hollow sections that are much longer than the diameter or circumference of steel. According to the cross-sectional shape, it is divided into circular, square, rectangular and special-shaped steel pipes; according to the material, it is divided into carbon structural steel pipes, low-alloy structural steel pipes, alloy steel pipes and composite steel pipes; Steel pipes for thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment, etc.; according to the production process, they are divided into seamless steel pipes and welded steel pipes, of which seamless steel pipes are divided into hot-rolled and cold-rolled (drawn) Two types, welded steel pipes are divided into straight seam welded steel pipes and spiral seam welded steel pipes.
Steel pipes are not only used for conveying fluids and powdered solids, exchanging thermal energy, making machine parts and containers, but also an economical steel. Using steel pipes to make building structure grids, pillars and mechanical supports can reduce weight, save 20-40% of metal, and realize factory-based mechanized construction. Using steel pipes to manufacture highway bridges can not only save steel and simplify construction, but also greatly reduce the area of protective coating, saving investment and maintenance costs.
Strip & Coil
Steel plates with thin thickness, narrow width and long length. Its width is generally 20mm-200mm. It is supplied in rolls, and its specifications are expressed as thickness × width. According to the quality of the steel, it is divided into high-quality and ordinary strip; according to the rolling method, it is divided into two types: hot-rolled and cold-rolled, which are respectively called hot-rolled strip and cold-rolled strip. The thickness of hot-rolled ordinary strip is 2 mm-6 mm, and the thickness of cold-rolled strip is generally 0.05 mm-3.60 mm. Strip steel can be made of ordinary carbon steel, carbon structure steel, spring steel, tool steel, stainless steel and other steel grades. Widely used in the manufacture of welded pipes, clamps, gaskets, spring blades, saw blades, blades, etc.
Strip steel is generally supplied in coils, which have the advantages of high dimensional accuracy, good surface quality, easy processing, and material saving.
billet
A billet is a product obtained by casting molten steel made in a steelmaking furnace. Steel billets can be mainly divided into two types from the manufacturing process: die casting billets and continuous casting billets. The die casting process has been basically eliminated.
The billet is originally steel, and after processing, it can be used as mechanical parts, forgings, processing various steels, section steel Q345B channel steel, and wire is the role of the billet.
Steel billets refer to semi-finished products used in the production of steel, which generally cannot be directly used by society. There are strict classification standards for billets and steel products, which cannot be determined by whether they are the final products of the enterprise, but must be implemented according to the unified standards of the whole society. Usually, billets and steels are easy to distinguish, but for some billets, which have the same specifications and the same purpose as steel (such as rolled tube billets), it can be determined by whether they are used in other industries and whether they have gone through the steel processing process. , Whether it has been processed by the finished rolling mill to distinguish.
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