Hot rolled round steel
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TianGangQ345B round steel profile
Q345A (GB/T 1591-1994)/omega % properties and applications: q345 steel is a kind of material. It is a low alloy steel (c < 0.2%), comprehensive performance is good, good low temperature performance, cold stamping performance, good welding performance and cutting performance ° is widely used in pressure vessels, vehicles, ships, buildings, Bridges, etc. Q represents this kind of material yield, behind the 345, is refers to the material yield value, at around 345. And with the increase of the thickness of the material and reduce the yield value. Analogous to the naming of q235 method. Q345a, q345b, q345c q345d, q345e. And this is the distinction between grade, represents the main impact of temperature is different! Q345a, don't do impact; Grade q345b, impact is 20 degrees at room temperature; Grade q345c, impact is 0 degrees; Q345d grade, is 20 degrees - impact; Q345e level, it is - hit 40 degrees. In the impact of different temperature, impact value is also different.
Round steel series
Combination of steel, carbon steel, die steel, bearing steel, tool steel, spring steel, gear steel, cold-drawn round steel, hot rolled round steel, forging round steel.
Round steel material; 15 #, 8 #, 10 #, 20 #, 25 #, 30 #, 35 #, 45 #, 20 cr, cr, 35 to 40 cr, cr, 45 50 cr, mn, 15, 16 mn (q345b), q345c, q345d, q345e, 50 mn, 65 mn, < p > q235b 15 crmo (a3), 20 crmo, 35 crmo, 42 crmo, 5 crmnmo, 38 crmoal, yf45mnv, cr12 < p > cr12mov, gr15, mn2 40, 45 mn2, 60 si2mn crmnti 20, 20 mntib, ml35, t8a, t9a, t10a, t11a < p > t12a, t13a, 3 cr2w8v, 20 crmnmo, 40 crmnmo, 20 crnimo, 27 simn... ..
- Q:What is the difference between a centerless ground and a rough turned steel round bar?
- A centerless ground steel round bar and a rough turned steel round bar differ in terms of their manufacturing processes and resulting surface finishes. A centerless ground steel round bar is produced by feeding the bar through a grinding machine that removes material from the surface to achieve precise diameter and roundness tolerances. This process involves rotating the bar between two grinding wheels while applying pressure to remove any imperfections and create a smooth, polished surface finish. The end result is a highly accurate and consistent diameter with a mirror-like finish, making it suitable for applications that require tight tolerances and a polished appearance. On the other hand, a rough turned steel round bar is manufactured through a different machining process called turning. This involves rotating the bar against a cutting tool that removes material from the surface in order to achieve the desired diameter and shape. However, unlike centerless grinding, turning does not provide the same level of precision and surface finish. The resulting surface of a rough turned bar will have visible tool marks and a rougher texture compared to a centerless ground bar. In summary, the main difference between a centerless ground steel round bar and a rough turned steel round bar lies in their manufacturing processes and resulting surface finishes. Centerless grinding offers a more precise diameter, roundness, and smoother surface finish, making it ideal for applications that require tight tolerances and a polished appearance. Rough turning, while less precise and with a rougher surface finish, is still suitable for applications that do not require the same level of precision or aesthetic appeal.
- Q:What is the difference between hot rolled and cold drawn steel round bars?
- Hot rolled steel round bars are made by heating a billet or ingot of steel to a high temperature and then rolling it into the desired shape. This process results in a rougher surface finish and less precise dimensions compared to cold drawn steel round bars. Cold drawn steel round bars, on the other hand, are made by pulling a hot rolled bar through a die to achieve the desired shape and size. This process produces a smoother surface finish and more accurate dimensions. Overall, the main difference between hot rolled and cold drawn steel round bars lies in the manufacturing process and the resulting surface finish and dimensional accuracy.
- Q:What is the composition of steel round bars?
- Steel round bars are primarily composed of iron and carbon, with trace amounts of other elements such as manganese, silicon, sulfur, and phosphorus. The main component, iron, provides the strength and structural integrity of the steel bar. The carbon content plays a crucial role in determining the hardness and strength of the bar, with higher carbon content resulting in a harder and stronger material. Manganese contributes to the overall strength and toughness of the steel, while silicon helps improve its resistance to oxidation and scaling at high temperatures. Sulfur and phosphorus are impurities that are typically kept at low levels to prevent detrimental effects on the material's mechanical properties. Overall, the composition of steel round bars is carefully controlled to achieve the desired strength, durability, and other specific properties required for various applications.
- Q:How are steel round bars used in the manufacturing of conveyor systems?
- Steel round bars are commonly used in the manufacturing of conveyor systems due to their durability and strength. These bars are often used as the main structural components for conveyor belts, rollers, and pulleys. In conveyor systems, the steel round bars are typically used to form the framework or support structure of the conveyor. They are used to create the main body of the conveyor, providing stability and strength to withstand the weight and movement of the materials being transported. For instance, steel round bars are often used to create the conveyor belt support structure. These bars are typically bent or welded into a circular shape to form the rollers or idlers that support the conveyor belt. The bars are usually spaced evenly along the length of the conveyor, providing a stable platform for the belt to move on. Additionally, steel round bars are also used to create the pulleys that drive the conveyor belt. These pulleys are typically made of a solid steel round bar, which is machined to the desired size and shape. The pulleys are then mounted on the conveyor system and connected to a motor or other power source, which allows them to rotate and move the conveyor belt. Overall, steel round bars play a crucial role in the manufacturing of conveyor systems by providing the necessary strength and stability required for efficient material handling. Their durability and resistance to wear and tear make them a suitable choice for the demanding conditions of conveyor applications.
- Q:Could you tell me what is the difference between steel pipe and round steel?
- Steel tube or conventional weapons indispensable materials, barrel, barrel to steel pipe manufacturing. The steel pipe can be divided into round tube and special-shaped pipe according to the cross sectional area and shape. Because of the condition of equal circumference, the circle surfaceThe product is the largest and uses round tubes to hold more fluids. In addition, the ring section is subjected to an average force when it is subjected to internal or external radial pressure, so most steel tubes are round tubes.
- Q:What is the maximum temperature that steel round bars can withstand?
- The maximum temperature that steel round bars can withstand depends on the specific grade or type of steel being used. Generally, carbon steel can withstand temperatures up to around 1,482 degrees Celsius (2,700 degrees Fahrenheit) before it starts to lose its structural integrity. However, it is important to note that different alloying elements and manufacturing processes can alter the maximum temperature tolerance of steel. For example, stainless steel can withstand higher temperatures than carbon steel due to its increased resistance to oxidation and corrosion. Furthermore, it is essential to consider the duration of exposure to high temperatures, as prolonged heat exposure can lead to softening and eventual failure of the steel. Therefore, it is crucial to consult the manufacturer's specifications or seek professional advice to determine the maximum temperature that a specific steel round bar can withstand in a given application.
- Q:What are the different heat treatment methods for steel round bars?
- There are several heat treatment methods that are commonly used for steel round bars to enhance their mechanical properties and improve their overall performance. These methods include annealing, normalizing, quenching, tempering, and case hardening. 1. Annealing: This heat treatment process involves heating the steel round bars to a specific temperature and holding it there for a certain amount of time to achieve a uniform microstructure. Annealing helps to relieve internal stresses, increase ductility, and improve machinability. 2. Normalizing: In this method, the steel round bars are heated to a temperature slightly above their critical transformation temperature and then cooled in still air. Normalizing refines the grain structure of the steel, improves its mechanical properties, and enhances its resistance to impact and fatigue. 3. Quenching: Quenching involves heating the steel round bars to a temperature above its critical temperature and then rapidly cooling it by immersing it in a quenching medium such as oil, water, or brine. This rapid cooling hardens the steel, making it stronger and more resistant to wear and abrasion. However, quenched steel can be brittle, so additional heat treatment steps may be required. 4. Tempering: After the quenching process, the steel round bars are often tempered to reduce brittleness and improve toughness. Tempering involves reheating the quenched steel to a specific temperature and holding it there for a specific time, followed by slow cooling. This process helps to reduce internal stresses, increase ductility, and improve the steel's overall toughness and machinability. 5. Case Hardening: Case hardening is a surface heat treatment method used to increase the hardness of the outer layer of the steel round bars while maintaining a relatively softer core. This process involves heating the steel in a carbon-rich environment, such as a gas or salt bath, and then quenching it to achieve a hardened outer layer. Case hardening improves wear resistance and fatigue strength, making the steel suitable for applications where high surface hardness is required. It's important to note that the specific heat treatment method used for steel round bars depends on the desired mechanical properties and the intended application of the product. Manufacturers carefully select the appropriate heat treatment method based on factors such as the composition of the steel, the desired hardness, and the required strength.
- Q:Can steel round bars be used in the telecommunications industry?
- Indeed, the telecommunications industry can make effective use of steel round bars. These bars are frequently employed to offer structural reinforcement for a range of telecommunications equipment, including antennas, satellite dishes, and communication towers. Notably resilient, these bars can withstand adverse weather conditions, rendering them well-suited for outdoor installations. Furthermore, the ease with which steel round bars can be fabricated and molded to meet precise design specifications enables the seamless integration of diverse components within the telecommunications infrastructure.
- Q:What are the common sizes of steel round bars?
- The specific application and industry standards determine the varying common sizes of steel round bars. Depending on these factors, the sizes can range from 1/4 inch to 24 inches in diameter. The availability of these sizes is often in increments of 1/8 inch or 1/4 inch. It is worth noting that the sizes may differ based on the country or region. Moreover, metric sizes are also an option, with diameters generally ranging from 6mm to 600mm. The extensive selection of steel round bar sizes enables a wide range of applications across different industries.
- Q:What is the carbon content in steel round bars?
- The carbon content in steel round bars varies depending on the grade and type of steel being used. Generally, carbon steel round bars contain carbon in the range of 0.08% to 1.5%. Higher carbon content provides increased strength and hardness, but it also decreases weldability and ductility. The specific carbon content in steel round bars is determined during the manufacturing process and can be specified by the customer based on their desired mechanical properties and application requirements.
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Hot rolled round steel
- Ref Price:
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