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: How does special steel contribute to the heavy equipment industry?
- Special steel contributes to the heavy equipment industry by offering enhanced strength, durability, and resistance to wear and tear. It enables the production of high-performance components and parts, such as gears, axles, and blades, that can withstand heavy loads, extreme temperatures, and harsh environments. The use of special steel in heavy equipment ensures improved safety, increased productivity, and longer service life, making it a critical material for the industry.
- Q: Can special steel be used in the nuclear power industry?
- Yes, special steel can be used in the nuclear power industry. Special steel is often used for components such as reactor pressure vessels, steam generators, and fuel cladding in nuclear power plants. Special steel's high strength, resistance to corrosion, and ability to withstand high temperatures make it suitable for the demanding conditions and safety requirements of the nuclear power industry.
- Q: What are the properties of corrosion-resistant tool steel?
- Corrosion-resistant tool steel possesses properties such as high hardness, excellent wear resistance, good toughness, and resistance to corrosion and oxidation. It is designed to withstand exposure to harsh environments, chemicals, and moisture, making it ideal for applications where resistance to corrosion is crucial, such as in marine environments or chemical processing industries.
- Q: What are the factors that affect the wear resistance of special steel?
- There are several factors that affect the wear resistance of special steel. Some of the key factors include the composition of the steel, particularly the presence of alloying elements such as chromium, tungsten, and vanadium, as these elements can enhance the hardness and toughness of the steel. The microstructure of the steel also plays a significant role, with a fine-grained structure and a homogeneous distribution of carbides generally resulting in improved wear resistance. Additionally, the heat treatment process used to harden the steel can greatly influence its wear resistance, as it affects the formation and distribution of various microstructural features. Surface finish and lubrication conditions can also impact the wear resistance of special steel, as a smooth surface and proper lubrication can reduce friction and wear. Finally, the operating conditions, such as load, speed, and temperature, can significantly affect the wear resistance of special steel, as excessive loads or high temperatures can lead to increased wear and deterioration of the steel's performance.
- Q: How is electrical steel used in the production of transformers and motors?
- Electrical steel is primarily used in the production of transformers and motors due to its magnetic properties. It is used as the core material in the construction of transformers to efficiently transmit electrical energy by reducing energy losses through magnetic hysteresis and eddy currents. In motors, electrical steel is used to create the stator and rotor laminations, which enhance the magnetic field and enable efficient conversion of electrical energy into mechanical motion. Overall, electrical steel plays a crucial role in improving the performance and energy efficiency of transformers and motors.
- Q: How does quenching and tempering affect the hardness of special steel?
- Special steel can have its hardness and mechanical properties improved through the use of heat treatment processes known as quenching and tempering. During quenching, the steel undergoes rapid cooling from a high temperature to either room temperature or below. This is typically achieved by immersing the steel in a quenching medium like oil or water. The quick cooling results in the formation of a martensitic structure, which is characterized by high hardness and brittleness. Quenching significantly enhances the hardness of the steel. However, the brittleness of the martensitic structure limits its usability in many applications. To address this issue, the steel then undergoes tempering. Tempering entails reheating the quenched steel to a temperature below the lower critical temperature, usually ranging from 200 to 600 degrees Celsius. The steel is held at this temperature for a specific period of time. This process facilitates the transformation of the brittle martensite into a more ductile structure known as tempered martensite. Tempering reduces the hardness of the steel but imparts improved toughness and ductility. The actual hardness achieved after tempering depends on the tempering temperature and time. Higher temperatures and longer times result in a greater reduction in hardness. By carefully adjusting the tempering parameters, a balance between hardness and toughness suitable for the intended application can be achieved. To summarize, quenching and tempering have a significant impact on the hardness of special steel. Quenching increases hardness by creating a martensitic structure, while tempering reduces hardness but enhances toughness and ductility. The specific hardness achieved through these processes can be controlled by adjusting the quenching and tempering parameters to meet the desired mechanical properties for the specific application.
- Q: What is the role of special steel in the construction industry?
- Special steel plays a crucial role in the construction industry as it provides enhanced strength, durability, and resistance to corrosion. It is commonly used in the construction of high-rise buildings, bridges, and infrastructure projects, where structural integrity is crucial. Special steel's unique properties enable it to withstand extreme conditions and heavy loads, ensuring the safety and longevity of construction projects. Additionally, its versatility allows for the fabrication of various components, such as beams, columns, and reinforcement bars, making it an indispensable material in the construction industry.
- Q: What are the applications of special steel in the renewable energy sector?
- Special steel plays a crucial role in the renewable energy sector by enabling the development and advancement of various technologies. One of the key applications of special steel in this sector is in the manufacturing of wind turbines. Wind turbine components such as towers, generator frames, rotor hubs, and bearings require high-strength, corrosion-resistant steel to withstand the harsh operating conditions, including strong winds and exposure to moisture. Special steel provides the necessary properties to ensure the longevity and reliability of wind turbines, thus contributing to the growth of wind energy. Moreover, special steel is extensively used in the construction of solar power plants. Solar panel frames, mounting structures, and support systems require steel with excellent structural integrity, durability, and resistance to environmental degradation. Special steel provides these qualities, ensuring the stability and performance of solar installations. In addition, special steel finds applications in the production of components for hydroelectric power plants. The construction of turbines, penstocks, and other hydraulic equipment demands steel with high tensile strength and resistance to corrosion caused by water and sediments. Special steel alloys possess these characteristics, making them ideal for hydroelectric power generation. Furthermore, special steel is utilized in the manufacturing of energy storage systems, such as batteries and fuel cells. These systems often require steel with exceptional conductivity, corrosion resistance, and mechanical strength to ensure efficient and reliable energy storage. Special steel alloys can meet these requirements, making them suitable for use in renewable energy storage technologies. In summary, special steel plays a vital role in the renewable energy sector by offering the necessary properties for the manufacturing of wind turbines, solar power plants, hydroelectric power plants, and energy storage systems. Its high-strength, corrosion-resistant, and durable characteristics enable the development of efficient and reliable renewable energy technologies, contributing to the sustainable energy transition.
- Q: Can special steel be used in the medical field?
- Yes, special steel can be used in the medical field. Special steel alloys, such as stainless steel, are widely used in medical and surgical instruments, implants, and equipment. Stainless steel is chosen for its excellent corrosion resistance, strength, and durability. It is often used for surgical instruments like scalpels, forceps, and needles, as well as for orthopedic implants like bone screws and plates. Additionally, special steel alloys are used in the construction of medical equipment like MRI machines and X-ray tables, where high strength and magnetic properties are required. Overall, special steel is an essential material in the medical field due to its unique properties and ability to meet the stringent requirements for hygiene, safety, and reliability.
- Q: What are the different methods of improving the toughness of special steel?
- To enhance the toughness of special steel, various techniques can be utilized. One effective method involves the addition of alloying elements such as nickel, chromium, or manganese to the steel composition. These elements contribute to increased strength and resistance to cracking or fracturing. Another approach is to apply heat treatment processes like quenching and tempering. Quenching rapidly cools the steel from a high temperature, resulting in a hardened structure. On the other hand, tempering involves reheating the quenched steel to a specific temperature and then slowly cooling it. In addition, grain refinement techniques can be employed to improve toughness. Controlling the size and distribution of grains within the steel enhances its resistance to fracture. Methods like grain size control through recrystallization and severe plastic deformation can be used to refine the grain structure. Furthermore, maintaining low impurity content in the steel is crucial for its toughness. Impurities like sulfur and phosphorus can cause brittleness, so refining and purification processes should be employed to reduce their presence. Moreover, surface treatment methods such as shot peening or surface hardening can be implemented. Shot peening involves bombarding the steel surface with small spherical particles to induce compressive stress, which helps in resisting crack propagation. Surface hardening techniques like carburizing or nitriding create a hardened layer on the surface, enhancing toughness. In conclusion, improving the toughness of special steel can be achieved through alloying, heat treatment, grain refinement, impurity control, and surface treatment. These techniques can be used individually or in combination to enhance the steel's properties and make it more resistant to cracking or fracturing.
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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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