high quality bearing steel, GCr15, 40Cr, SAE1055, G20CrNiMo
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 500 m.t.
- Supply Capability:
- 10000 m.t./month
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Specifications:
1) Grade: Bearing steel SAE 52100 / GCr15 round bars
2) Diameter: 20-500mm
3) Hot rolled/forged, annealed
Application:
Commom steel used to produce balls and rings of bearing. The product has characteristics of uniform-chemical composition, low percentage of harmful elements, high purity, well-distributed carbide, good surface quality. It also has characteristics of wide scope of plastic,stable heat-treatment quality, uniformand high hardness, high wear resistance,high strength of touching fatigue. It has excellent machining property afer spheroidize annealing.
The use of products The product is used to produce balls and rings of bearing. Future Development By rational rolling and cooling process, the product can be spheroidized on-line and can be used in drawing and machining directly by customers. By combining re-spheroidize annealing and re-crystallisation of semi-finished product, the steel wire process can be simplified.
Packaging & Delivery
Mark: Heat No. will be cold stamped and Steel grade, diameter (mm), length (mm), and the manufacturer LOGO and weight (kg) is painted.
Standard seaworthy packing or as customer required
Delivery time: Within 30 days after order is confirmed.
Benefits of Bearing Steels:
•Cleanliness and freedom from objectionable microscopic slag type inclusions.
•Shallow decarburized surface
•Dimensional accuracy and excellent micro-structure uniformity.
Our Advantages:
•Fast delivery
•Non-standard sizes and made-to-order
•Small min order quantity
•Economical Pricing
•Quality confirming to International Standards
•Material Test Certificates for Quality Assurance
•Technical Qualified After Sales
•Excellent Delivery Conditions.
- Q:What are the different tempering techniques used for special steel?
- Some of the different tempering techniques used for special steel include air tempering, oil tempering, water tempering, and salt bath tempering.
- Q:What is the process of manufacturing special steel?
- To produce high-quality and durable special steel with specific properties, several steps must be taken in the manufacturing process. Firstly, the raw materials needed for special steel production, such as iron ore, coal, chromium, nickel, and manganese, are selected meticulously based on the desired properties of the final product. Once the raw materials have been chosen, they are melted in large furnaces, either through the use of electric arc furnaces or basic oxygen furnaces. These furnaces subject the raw materials to extremely high temperatures, transforming them into molten metal. After the raw materials have been melted, the molten metal undergoes a refining process to eliminate any impurities. Techniques such as degassing, desulphurization, and deoxidation are employed to ensure that the steel is free from unwanted elements that could have a negative impact on its properties. Next, alloying elements are added to the molten metal after the refining process to achieve the desired properties. The proportion and specific alloying elements utilized depend on the intended application of the special steel. The molten steel is then poured into a continuous casting machine, which solidifies it into semi-finished products known as billets, blooms, or slabs. This continuous casting process guarantees a consistent and uniform structure throughout the steel. The semi-finished products are reheated and passed through a series of hot rolling mills. This process involves reducing the thickness and shaping the steel into various forms, including bars, rods, plates, or sheets, depending on the intended use. Following hot rolling, the steel may undergo heat treatment processes like annealing, quenching, tempering, or case hardening. These treatments further enhance the mechanical properties of the steel, such as its hardness, toughness, and ductility. The final step involves surface finishing and quality control measures. The steel is thoroughly inspected for any defects or imperfections that may have occurred during the manufacturing process. Surface treatments like pickling or galvanizing can also be applied to enhance the steel's appearance and protect it from corrosion. In conclusion, manufacturing special steel is a complex and precise operation that involves careful selection of raw materials, melting, refining, alloying, continuous casting, hot rolling, heat treatment, and finishing. These steps ensure that the resulting steel meets the specific requirements and performance characteristics demanded by various industries.
- Q:What is the significance of phosphorus in special steel?
- Phosphorus plays a crucial role in special steel as it enhances its strength, hardness, and machinability. It acts as a grain refiner, reducing the grain size of the steel and improving its toughness. Additionally, phosphorus increases the steel's corrosion resistance and decreases its brittleness, making it more suitable for various industrial applications. Overall, phosphorus is a significant element in special steel, contributing to its overall performance and quality.
- Q:How does special steel perform in corrosive chemical environments?
- Special steel, also known as stainless steel, performs exceptionally well in corrosive chemical environments. This is primarily due to its unique composition which includes a high amount of chromium, typically above 10.5%. Chromium forms a passive oxide layer on the surface of the steel, which acts as a protective barrier against corrosion. The passive oxide layer is highly resistant to attack from various corrosive substances, including acids, alkalis, and salts. This makes special steel highly reliable and durable in chemical environments where corrosion is a significant concern. Additionally, special steel exhibits excellent resistance to pitting corrosion, which is a localized form of corrosion that can occur in aggressive chemical environments. This resistance is attributed to the presence of other alloying elements such as nickel and molybdenum, which further enhance the steel's corrosion resistance properties. Furthermore, special steel offers excellent strength and toughness, making it suitable for various industrial applications, including chemical processing plants, oil and gas refineries, and pharmaceutical industries. It can withstand high temperatures and pressures, ensuring long-term performance and reliability even in harsh chemical environments. However, it is essential to note that the performance of special steel in corrosive chemical environments can vary depending on the specific grade and composition of the steel. It is crucial to select the appropriate grade of special steel that is specifically designed for the intended chemical environment to ensure optimal performance and longevity.
- Q:Classification of special steel products
- Carbon structural steels are normally used directly under heat supply without heat treatment. The mass fraction of Q195, Q215, Q235 are usually of low carbon steel, good welding performance, good plasticity and toughness, a certain strength, often rolled into a sheet, steel, welded steel pipe, used for bridges, buildings and general manufacturing rivet, screw and nut parts etc.. Q255 and Q275 mass fraction of carbon steel is slightly high, high strength, good plasticity and toughness, can be welded steel, steel rolling, usually forming and plate structure and simple manufacturing machinery, connecting rod, gear coupling, pins and other parts. Plain carbon steel high carbon steel is basically contains alloy elements, the carbon content in the range of 0.65% ~ 1.35%, the production of low cost, easy to obtain raw materials, good machinability, after treatment can obtain high hardness and high wear resistance, so the steel is widely used to manufacture various. Cutting tool, mold, measuring tools.But the red hardness difference of this kind of steel, that is, when the working temperature is greater than 250 degrees, the hardness and wear resistance of steel will decline rapidly, and lose their ability to work. In addition, if carbon tools steel is made into larger parts, it is difficult to harden, and deformation and crack are easy to occur. This kind of steel must ensure both chemical composition and mechanical properties. The number is two digits by the average mass fraction of carbon steel in the 000 fraction (W C * 10000). For example, steel 45 shows the average mass fraction of carbon in steel is 0.45%; 08 steel indicates the average mass fraction of carbon in steel is 0.08%.
- Q:How does special steel contribute to the manufacturing of bearings?
- The importance of special steel in bearing manufacturing cannot be overstated. This type of steel, also known as bearing steel, is specifically designed to meet the demanding requirements of bearings. First and foremost, special steel offers exceptional hardness, which is crucial for bearings to endure heavy loads and high-speed rotations. This hardness allows the bearings to resist wear and deformation, resulting in a longer lifespan and reliable performance. In addition, special steel possesses excellent corrosion resistance. Bearings often operate in harsh environments where they are exposed to moisture, chemicals, and other corrosive substances. The special steel used in their production effectively prevents rust and deterioration, ensuring that the bearings can withstand these challenging conditions. Furthermore, special steel has superior heat resistance and thermal stability. Bearings can generate significant heat during operation due to friction and pressure. The special steel used in their production can withstand high temperatures without losing its structural integrity, preventing premature failure and ensuring consistent performance. Moreover, special steel offers exceptional strength and toughness. These properties are vital for bearings to withstand the intense forces and impacts they experience during operation. The high strength and toughness of the steel prevent fractures, breakages, and other forms of damage, contributing to the overall durability and reliability of the bearings. Lastly, special steel has excellent dimensional stability and machinability. This allows for precise manufacturing and shaping of the bearing components, ensuring accurate dimensions and smooth surfaces. The dimensional stability of the steel ensures that the bearings can maintain their proper fit and alignment within the machinery, minimizing any potential issues or malfunctions. In conclusion, the unique properties of special steel make it indispensable in bearing manufacturing. Its hardness, corrosion resistance, heat resistance, strength, toughness, dimensional stability, and machinability enable bearings to withstand various challenging conditions, ensuring their reliable and efficient operation in a wide range of applications.
- Q:What are the main characteristics of high-speed steel?
- High-speed steel (HSS) is a type of tool steel that is widely used in machining applications due to its exceptional properties. The main characteristics of high-speed steel include: 1. Superior Hardness: HSS is known for its remarkable hardness, which allows it to withstand high temperatures and resist wear. This hardness is achieved through the addition of various alloying elements like tungsten, molybdenum, cobalt, vanadium, and chromium. 2. Excellent Heat Resistance: High-speed steel has exceptional heat resistance, enabling it to maintain its hardness and strength even at elevated temperatures. This property is crucial in applications where the tool needs to withstand high cutting speeds and generate significant amounts of heat. 3. Good Toughness: HSS possesses good toughness, which means it can resist cracking and chipping under heavy loads or impact. This characteristic ensures that the tool can endure demanding cutting conditions without premature failure. 4. High Wear Resistance: HSS exhibits high wear resistance, making it suitable for cutting, drilling, and milling operations. It can withstand prolonged usage without losing its sharpness or performance, resulting in extended tool life. 5. Versatility: High-speed steel is highly versatile and can be used for a wide range of applications, including cutting, shaping, and forming various materials such as metals, plastics, and wood. Its versatility makes it a popular choice in industries like manufacturing, automotive, aerospace, and construction. 6. Ease of Machining: HSS can be easily machined and shaped into different tool designs, which allows for customization and optimization based on specific applications. This characteristic makes it a preferred material for manufacturing cutting tools like drills, end mills, taps, and saw blades. 7. Cost-Effective: Compared to other high-performance tool materials like carbide, high-speed steel is relatively more cost-effective. It provides a balance between performance and affordability, making it a cost-efficient choice for many machining applications. In conclusion, high-speed steel is valued for its exceptional hardness, heat resistance, toughness, wear resistance, versatility, ease of machining, and cost-effectiveness. These characteristics make it a preferred material for a wide range of cutting tools, ensuring efficient and reliable machining operations.
- Q:What are the requirements for special steel used in marine applications?
- In order to ensure durability and performance in harsh marine environments, special steel used in marine applications must satisfy various specific criteria. These criteria encompass the following: 1. Corrosion resistance: To prevent degradation and maintain its structural integrity over time, special steel utilized in marine applications must possess a high resistance to corrosion, as it is exposed to saltwater in marine environments. 2. Strength and toughness: Steel employed in marine applications must exhibit adequate strength and toughness to withstand the dynamic forces and impacts encountered at sea. It must be capable of enduring heavy loads, extreme temperatures, and the impact of waves or collisions. 3. Weldability: Optimal weldability is a requirement for special steel used in marine applications, as it facilitates the construction and repair of marine structures. This characteristic ensures that the steel can be effortlessly joined without compromising its structural integrity. 4. Fatigue resistance: Special steel employed in marine applications must possess exceptional fatigue resistance to withstand the constant cyclic loading associated with wave motions, currents, and operational conditions. Failure to address this requirement can result in fatigue failure. 5. Low-temperature toughness: Due to the involvement of marine applications in cold climates or icy waters, special steel used in these scenarios must maintain its toughness and ductility even at low temperatures. This characteristic is pivotal in preventing brittle fracture and ensuring safety. 6. Fire resistance: High fire resistance is of utmost importance in marine applications. Therefore, special steel utilized in marine structures should possess a high level of fire resistance to prevent structural collapse and restrict the spread of fire. 7. Easy maintenance: Ongoing exposure to harsh environmental conditions necessitates that special steel used in marine applications be easy to maintain and repair. This ensures prolonged performance and minimizes downtime. To fulfill these requirements, special steel for marine applications frequently undergoes alloying with specific elements such as chromium, nickel, and molybdenum. This enhances corrosion resistance, strength, and toughness. Furthermore, advanced manufacturing processes and quality control measures are implemented to guarantee the highest standards of quality and performance in marine applications.
- Q:What are the properties of corrosion-resistant stainless steel?
- Corrosion-resistant stainless steel has several key properties. Firstly, it has a high level of chromium content, typically around 10-20%, which forms a protective oxide layer on the surface of the steel. This oxide layer acts as a barrier, preventing oxygen and moisture from reaching the underlying metal and causing corrosion. Additionally, stainless steel contains other alloying elements such as nickel, molybdenum, and nitrogen, which further enhance its corrosion resistance. These alloys help to stabilize the oxide layer and make it more resistant to corrosion by aggressive substances such as acids, salts, and chlorides. Furthermore, stainless steel is highly durable and has excellent strength, making it suitable for various applications in corrosive environments, including marine, chemical, and food processing industries.
- Q:How is leaded steel used in machining operations?
- Leaded steel is commonly used in machining operations due to its improved machinability. The addition of lead to the steel composition enhances its ability to be cut, drilled, and shaped with ease, reducing tool wear and improving surface finish. This type of steel is particularly useful in high-speed machining applications, where efficiency and precision are crucial.
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high quality bearing steel, GCr15, 40Cr, SAE1055, G20CrNiMo
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 500 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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