Forged Steel Round Bar SAE8620 /C45 /42CrMo4

Forged Steel Round Bar SAE8620 /C45 /42CrMo4 System 1

Forged Steel Round Bar SAE8620 /C45 /42CrMo4 System 2

Forged Steel Round Bar SAE8620 /C45 /42CrMo4 System 3

Forged Steel Round Bar SAE8620 /C45 /42CrMo4 System 4

Forged Steel Round Bar SAE8620 /C45 /42CrMo4

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 100000 m.t./month

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Forged Steel Round Bar SAE8620 /C45 /42CrMo4

Specifications

SAE8620,forged steel round bar,size:90mm to 800mm,Rough turned,Normalized,Annealed,
Quenched and Tempered.

Forged steel round bar

Steel grade:

Carbon steel:

Chinese Standard:20#,25#,35#,45#,50#,60#;

Japan Standard:S20C,S25C,S35C,S45C,S55C,S60C;

US Standard:AISI1020,AISI1040,AISI1045,AISI1050;

Europe Standard:CK15,C.22,C45,CK45,C60,CK60;C45E;

Alloy Steel:

Chinese Standad:16Mn,20Mn,30Mn2,30Mn5,40Cr,Q345D,Q345E,Q390;42CrMo,

20CrMo,38CrMoAl,40CrNiMo;48CrMo,5CrNiMo;

Janpan Standard:SCM415,SCM420,SCM440,SNCM439,SNCM220; SACM645

USA Standard:SAE4140,SAE4130,SAE9840,SAE4340,AISI4145H,SAE4150,SAE8620,

Europe Standard:42CrMo4,25CrMo4,34CrNiMo6,39CrNiMo3,17NiCrMo6,18CrNiMo7-6,

S355J2G3,ASTM A105,ST52-3,16MnCr5,20MnCr5,16MnCrS5,20MnCrS5,21CrMoV511,

56NiCrMoV7,18NiCrMo5,30CrNiMo8,34NiCrMo16,41CrAlNi7,34CrAlNi7,B7,B16,F11,

F12,F22,F5,F9,51Cr4.

Tool Steel:1.2714,H13,H11,P20,SKD61;

Delivery condition:Forged+Normalized/Annealed+RoughTurned

+Quenched and Tempred;

Also can supply the finish products according the drawings;

Length:3 meters or 4 meters and up or fix length according the actually needs

Size:90mm-800mm

Diameter tolerance:-0/+6mm Black surface -0/+2mm Rough Turned

Steel ingot:EAF+LF+VD;

Also use ESR Process if needed;

Ultrasonic Test:According GB/T6401-91 Class 1,Class 2,Class 3;

And GB/T6402-2008 Class 3,Class 2;

And Sep1921 Class C/c,D/d,E/e, Or ASTM A388 Standards;

Grain Size:Better than 6;

Purity, non-metallic inclusions, mechanical properties, hardness According China or EU

Standard;

Quantity:70000 Tons per year

Including Forged round bar 55000 Tons,

Forged square bars 12000Tons,

Other forgings like forged step shaft,forged hollow bars,forged rollers 3000 Tons;

Forged Steel Round Bar SAE8620 /C45 /42CrMo4

Q: What are the different types of steel round bars used in the power generation industry?: Different applications in the power generation industry utilize various types of steel round bars. These round bars are carefully selected for their distinct properties and characteristics, which are essential for different power generation processes. Commonly used types of steel round bars in the power generation industry include: 1. Carbon Steel Round Bars: These round bars are extensively used due to their affordability, strength, and ease of fabrication. They find applications in power generation equipment like turbines, generators, and boilers. 2. Alloy Steel Round Bars: Alloy steel round bars are created by combining carbon steel with elements such as chromium, nickel, and molybdenum to enhance their mechanical properties. These bars offer increased strength, corrosion resistance, and heat resistance, making them suitable for high-pressure and high-temperature applications in power plants. 3. Stainless Steel Round Bars: Stainless steel round bars possess high corrosion resistance and excellent heat resistance. They are commonly employed in power generation equipment that comes into contact with water or steam, such as condensers, heat exchangers, and valves. 4. Tool Steel Round Bars: Tool steel round bars are renowned for their exceptional hardness, wear resistance, and toughness. They are frequently used in power generation equipment that undergoes frequent machining, cutting, or forming processes, including drilling equipment and turbine blades. 5. High-Speed Steel Round Bars: High-speed steel round bars are specifically designed to withstand high temperatures while maintaining their hardness and cutting ability at elevated speeds. They find applications in power generation equipment like cutting tools, drills, and milling machines. 6. Duplex Steel Round Bars: Duplex steel round bars combine austenitic and ferritic stainless steels, offering outstanding strength, corrosion resistance, and weldability. They are commonly utilized in power plants for piping systems, pressure vessels, and heat exchangers. It should be noted that the specific type of steel round bars utilized in the power generation industry can vary depending on the requirements and operating conditions of each power plant. Therefore, it is crucial to consult with engineers and experts to determine the most suitable type of steel round bars for a particular power generation application.

Q: How do you prevent warping of steel round bars during machining?: There are several measures that can be taken to prevent warping of steel round bars during machining. These measures include: 1. Opting for the appropriate steel material with suitable mechanical properties is crucial. Choosing steel with lower carbon content and controlled alloying elements can help decrease the likelihood of warping during machining. 2. Before machining, it is important to conduct a stress relief process such as annealing or normalizing. This helps eliminate internal stresses in the steel round bars, thereby minimizing warping. 3. Utilizing proper machining techniques is essential in preventing warping. This involves using a stable and rigid machine setup, ensuring correct tool geometry and sharpness, and maintaining appropriate cutting speeds and feeds. Monitoring cutting forces and temperatures continuously can also assist in identifying any abnormal conditions that may contribute to warping. 4. Excessive heat generated during machining can cause localized expansion and lead to warping. To prevent this, it is recommended to use coolant or lubricant to dissipate heat and reduce friction between the tool and the workpiece. Sufficient cooling helps maintain a stable temperature and prevents warping. 5. When machining long steel round bars, it is advisable to use appropriate fixtures or supports to prevent excessive deflection or bending. This ensures that the bar remains straight and stable during machining, reducing the chances of warping. 6. Even after machining, stress can still be present in the steel round bars. Performing a post-machining stress relief process, such as tempering or normalization, can further alleviate any residual stresses and minimize the risk of warping. By implementing these measures, the risk of warping during the machining of steel round bars can be significantly reduced. This leads to improved dimensional accuracy and overall quality of the machined parts.

Q: Can steel round bars be annealed?: Yes, steel round bars can be annealed. Annealing is a heat treatment process that involves heating the steel to a specific temperature and then gradually cooling it, which helps to relieve internal stress, improve ductility, and enhance the material's machinability.

Q: Are steel round bars suitable for welding?: Certainly! Welding can be done with steel round bars, as they possess exceptional strength and durability. These bars are frequently utilized in welding applications due to their excellent properties. One can easily employ a variety of welding techniques, including MIG, TIG, or stick welding, to weld steel round bars. However, it is vital to carefully select the appropriate welding method and consumables based on the specific grade and alloy composition of the bar to ensure a successful weld. To achieve reliable and robust welds, proper surface preparation and cleaning are of utmost importance. All in all, steel round bars are a favored choice for welding projects due to their versatility and ability to endure high temperatures and stress.

Q: How do you prevent scaling of steel round bars during heat treatment?: To minimize scaling of steel round bars during heat treatment, various steps can be taken: 1. Employ a protective atmosphere: Heat treatment can be conducted in a controlled gas environment, such as a furnace with regulated gas composition. This shields the steel bars from oxygen exposure, the main cause of scaling. 2. Employ a protective coating: Coating the steel round bars with a substance like refractory material or a thin layer of paint can help prevent scaling. This creates a barrier between the steel and the oxygen in the atmosphere, reducing the likelihood of scaling. 3. Use a reducing atmosphere: Instead of a regular atmospheric environment, heat treatment can be carried out in a reducing atmosphere. This involves introducing gases like hydrogen or nitrogen into the furnace, reacting with oxygen to create a controlled environment that prevents scaling. 4. Control the heating rate: Rapid heating can lead to increased scaling due to sudden exposure to high temperatures. By controlling the heating rate, such as gradually increasing temperature, scaling can be minimized. 5. Limit the exposure time: Reducing the duration that steel round bars are exposed to high temperatures helps prevent scaling. This can be achieved by optimizing the heat treatment process and avoiding prolonged exposure to elevated temperatures. 6. Clean the surface before heat treatment: Before heat treatment, it is essential to remove any contaminants or residues from the surface of the steel round bars. This can be achieved through mechanical methods like wire brushing or chemical cleaning techniques, ensuring a clean surface that is less prone to scaling. Implementing these preventive measures effectively minimizes scaling of steel round bars during heat treatment, resulting in improved quality and performance of the treated bars.

Q: What is the difference between a smooth and a precision ground steel round bar?: A smooth steel round bar refers to a steel rod that has a plain surface without any specific surface treatment or finishing process. It is typically produced through hot rolling or cold drawing methods, resulting in a basic cylindrical shape with a relatively rough surface texture. Smooth steel round bars are commonly used in various applications where a smooth exterior finish is not a critical requirement. On the other hand, a precision ground steel round bar undergoes an additional manufacturing process to achieve a more precise and refined surface finish. The precision grinding process involves removing any imperfections or irregularities from the surface of the steel rod, resulting in a highly smooth and polished finish. This process ensures that the diameter of the round bar remains consistent along its length and that the surface has a superior level of finish and accuracy. Precision ground steel round bars are widely used in applications that demand tight tolerances, precision machining, or where a smooth and polished surface is essential. Industries such as aerospace, automotive, tooling, and manufacturing often rely on precision ground steel round bars for their high-quality surface finish, dimensional accuracy, and reliable performance. In summary, the main difference between a smooth and a precision ground steel round bar lies in the surface finish and level of precision achieved. While a smooth steel round bar has a basic, rough surface texture and is suitable for general applications, a precision ground steel round bar undergoes additional grinding processes to achieve a highly smooth, polished, and accurate surface finish, making it ideal for applications requiring tight tolerances and precision machining.

Q: Can steel round bars be used in the mining industry?: Indeed, the mining industry can make use of steel round bars. Thanks to their robustness, longevity, and ability to withstand corrosion, steel round bars find wide application in various mining scenarios. Notably, they contribute significantly to the assembly of mining machinery, including crushers, conveyors, and drill rods. Moreover, steel round bars play a pivotal role in constructing support structures like mine shafts and tunnels. Additionally, they are indispensable in the creation of drilling tools and machinery. Given their adaptability and exceptional tensile strength, steel round bars emerge as the prime option for the challenging and hostile conditions that frequently arise in the mining industry.

Q: Can steel round bars be used for fastener applications?: Yes, steel round bars can be used for fastener applications. Steel round bars are often used as bolts, screws, and studs in various industries due to their high strength, durability, and resistance to corrosion. They provide a secure and reliable fastening solution for a wide range of applications, including construction, automotive, and machinery.

Q: Are steel round bars suitable for the production of bearings?: Steel round bars are unsuitable for bearing production. Bearings necessitate materials with specific properties, including high hardness, wear resistance, and a low friction coefficient. Steel round bars lack these characteristics in their raw form and would require additional processing and treatments to acquire the necessary properties for bearing production. Bearing materials are generally chosen from alloys like stainless steel, chrome steel, or ceramic materials that are designed to withstand challenging conditions and offer optimal performance.

Q: How are steel round bars used in the construction of airports and runways?: Steel round bars are commonly used in the construction of airports and runways for various purposes. They are primarily used to reinforce the concrete structures, such as the foundation, columns, beams, and slabs. The round bars provide strength and durability to the concrete, ensuring that it can withstand heavy loads and resist cracking or collapsing. Additionally, steel round bars are also used in the construction of drainage systems, fencing, and other infrastructure components within airports and runways.

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