High grade spring steel wire
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Spring steel is due in the quenched and tempered condition of elastic,specially used in the manufacture of spring and spring steel. Resiliencedepends on the deformation of steel in the elasticity, that is within the scope of the regulations, the elastic deformation of the ability to bear a certain load, theload permanent deformation after removal does not appear. Spring steelshould possess excellent comprehensive properties, such as mechanical properties (especially the elastic limit, ultimate strength, yield ratio), sag resistance performance (i.e., anti sagging performance, also known as the anti relaxation property), fatigue performance, hardenability, physical and chemical properties of heat resistance, low temperature resistance, (oxidation, corrosion resistance etc.). In order to meet the performance requirements, spring steel has excellent metallurgical quality (high purity and uniformity), good surface quality (strict control of surface defects and decarburization), shape and sizeprecision.
According to GB/T 13304 "steel classification" standard, according to the basicproperties and use characteristics of spring steel, belonging to the mechanical structure with steel; according to the quality grade, which belongs to thespecial quality steel, which need to be especially strict quality control and performance of the steel in the production process. According to the Chinahabits, spring steel belongs to special steel, spring steel when makingtechnical requirements are relatively high, excellent technology directly determine the level of quality.
Classification
Classified according to chemical composition
According to the GB/T 13304 standard, spring steel for non alloy spring steelin accordance with its chemical composition (carbon spring steel) and alloy spring steel. Carbon spring steel
The carbon content of carbon spring steel (mass fraction) in general 0.62%~0.90%. According to the content of manganese is divided into generalmanganese content (mass fraction) (0.50%~0.80%) such as 65, 70, 85 andhigher manganese content (mass fraction) (0.90~1.20%), such as the 65Mnclass two.
Alloy spring steel
Alloy spring steel in carbon steel on the basis of appropriate, by adding one orseveral kinds of alloy elements to improve the mechanical properties ofhardened steel, permeability and other properties, the desired performance in order to meet the manufacturing all kinds of spring steel.
Alloy spring steel basic composition series, Si Mn spring steel, spring steel,silicon chromium chromium manganese spring steel, chrome vanadium springsteel, tungsten chromium vanadium spring steel etc.. Based on these series,with molybdenum, vanadium and boron alloy elements such as some brandsand join in order to improve the performance of some of its aspects.
In addition, also from other steel types, such as high quality carbon structuralsteel, carbon tool steel, high-speed tool steel, stainless steel, the choice of some grades of steel used as spring.
Classification according to the production processing method
The hot rolling (forging) steel hot rolling round steel, including Fang Gang, flat steel, steel plate, forging round steel, Fang Gang.
The cold drawing (rolling) steel wire, cold drawn steel strip, including material(cold drawn steel).
In accordance with the steel delivery status classification
The hot rolling (forging) steel
A. rolled (forging) delivery of steel after hot forming is made of spring, and then quenching and tempering treatment.
B. in annealing state of delivery by the cold formed steel spring, thenquenching and tempering treatment.
All the above should comply with the relevant state provisions of deliveryhardness.
The cold drawing (rolling) steel
A. steel wire
The lead bath isothermal quenching cold drawn steel wire (also called sendDeng de cold drawing steel wire spring) made only after low temperaturetempering, to eliminate stress.
The oil quenching and tempering steel cold drawn into required size,continuous heating, continuous oil quenching and tempering of lead. Springsteel wire made only for the bottom temperature of fire, in order to eliminate stress.
The cold drawn steel wire (i.e. without quenching and tempering steel)
A. to cold state of delivery.
B. with annealing, normalizing or tempering treatment delivery.
The above two kinds of delivery wire springs are needed after quenching and tempering treatment.
B. steel strip
The cold state of delivery is made of spring after low temperature tempering, to eliminate stress.
The quenched and tempered condition required delivery is made of springafter low temperature tempering, to eliminate stress.
The back fire delivery is made of spring after quenching and temperingtreatment needs
C. cold drawn steel
In the annealed state delivery after cold forming steel is made of spring, and then quenching and tempering treatment.
The other classification method
In addition to the above, there are a number of other classification methods,for example:
According to the conditions of delivery requirements can be divided according to the chemical composition (mechanical properties) delivery and press thehardenability of delivery.
According to the spring working conditions can be divided into static loadspring steel, subjected to impact load spring steel and high (low) temperaturespring and corrosion resistance of spring steel etc..
2 process performance
Edit
Spring in use shock and vibration or prolonged stress, so the requirements ofhigh tensile strength, high elastic limit, the fatigue strength of the spring steel.In the technology requirements of spring steel has certain hardenability, not easy removal, good surface quality carbon spring steel is carbon content of WC in the 0.6%-0.9% range of high-quality carbon structural steel. Alloy springsteel is mainly the Si Mn steel, their carbon content was slightly lower, mainly by increasing the silicon content of Wsi to improve performance; in addition toLuo, tungsten, vanadium alloy steel spring. In recent years, with ChinaResources, and according to the automobile, tractor design requirements of new technologies, develop new steel added boron, niobium, molybdenum and other elements in the Si Mn steel on the basis of the spring is extended service life, improve the quality of the spring.
Performance requirements
Spring in use shock and vibration or prolonged stress, so the requirements ofhigh tensile strength, high elastic limit, the fatigue strength of the spring steel.In the technology requirements of spring steel has certain hardenability, not easy removal, good surface quality carbon spring steel is carbon content of WC in the 0.6%-0.9% range of high-quality carbon structural steel. Alloy springsteel is mainly of Si Mn steel
- Q:Can special steel be used for making nuclear industry components?
- Yes, special steel can be used for making nuclear industry components. Special steel, also known as alloy steel, possesses certain properties that make it suitable for use in the nuclear industry. These properties include high strength, excellent corrosion resistance, and good resistance to high temperatures and radiation. Nuclear industry components, such as reactor pressure vessels, steam generators, and fuel rods, operate under extreme conditions of high pressure, high temperature, and exposure to radiation. Special steel can withstand these conditions and maintain its structural integrity, ensuring the safe and reliable operation of nuclear facilities. The use of special steel in the nuclear industry also helps to prevent the release of radioactive materials. The high corrosion resistance of special steel reduces the risk of leakage and contamination, thereby enhancing the safety of nuclear power plants. Furthermore, special steel can be tailored to meet specific requirements of the nuclear industry. Different types of special steel alloys can be developed with specific compositions and heat treatments to optimize their properties for nuclear applications. This allows for the customization of steel components to meet the unique demands of the nuclear industry. In conclusion, special steel can indeed be used for making nuclear industry components due to its high strength, corrosion resistance, and resistance to high temperatures and radiation. Its use contributes to the safety and reliability of nuclear facilities, while also allowing for customization to meet specific requirements.
- Q:What are the magnetic properties of special steel?
- Special steel can exhibit a range of magnetic properties depending on its composition and processing. It can be non-magnetic, weakly magnetic, or strongly magnetic. The specific magnetic properties of special steel can be tailored to meet specific requirements for different applications.
- Q:What are the different joining methods used for special steel?
- The different joining methods used for special steel include welding, brazing, soldering, and mechanical fastening.
- Q:What are the different surface treatment techniques for special steel?
- There are several surface treatment techniques for special steel, including electroplating, hot-dip galvanizing, powder coating, and passivation. Electroplating involves depositing a thin layer of metal onto the steel surface to improve its corrosion resistance. Hot-dip galvanizing involves immersing the steel in molten zinc to create a protective coating. Powder coating involves applying a dry powder to the steel surface, which is then cured to create a durable and decorative finish. Passivation is a chemical process that removes impurities from the steel surface, enhancing its corrosion resistance.
- Q:How is special steel used in the production of aircraft components?
- Special steel is used in the production of aircraft components due to its exceptional strength, durability, and corrosion resistance. It is utilized in critical areas such as landing gear, engine parts, and structural components to ensure the safety and performance of the aircraft.
- Q:What are the main advantages of using special steel in the medical field?
- The main advantages of using special steel in the medical field include its high strength and durability, excellent corrosion resistance, biocompatibility, and ease of sterilization. These properties make special steel ideal for manufacturing surgical instruments, implants, and medical devices that need to withstand rigorous use, maintain their shape and performance over time, and ensure patient safety and comfort.
- Q:How does special steel contribute to the power generation equipment industry?
- Special steel plays a crucial role in the power generation equipment industry by offering enhanced performance, durability, and reliability. Power generation equipment, such as turbines, generators, and transformers, operate under severe conditions including high temperatures, pressure, and corrosive environments. Special steel, with its unique properties and characteristics, addresses these challenges and contributes significantly to the industry. One of the key advantages of special steel in power generation equipment is its ability to withstand high temperatures. Special steel alloys, such as heat-resistant steels, are designed to perform under extreme conditions, enabling power plants to operate at elevated temperatures without compromising efficiency or safety. These steels maintain their strength, structural integrity, and resistance to creep and fatigue even at the highest operating temperatures, ensuring the reliability and longevity of the equipment. Furthermore, special steel offers excellent corrosion resistance, which is essential in power generation equipment due to the presence of corrosive substances like water, steam, and chemicals. Stainless steel, for instance, is widely used in power plants for its exceptional resistance to corrosion, preventing equipment degradation and minimizing maintenance costs. By using special steel, power generation companies can reduce downtime and enhance overall efficiency. Special steel also contributes to the power generation equipment industry by providing exceptional strength and mechanical properties. This is particularly important for large-scale equipment such as turbines and generators, which are subjected to high mechanical loads. High-strength special steel allows these components to withstand the stress and pressure, ensuring their safe and reliable operation over an extended period. Moreover, special steel's unique properties, such as high hardness and wear resistance, make it suitable for critical components like blades and rotors, reducing the risk of failure and enhancing overall performance. In summary, special steel is an indispensable material in the power generation equipment industry. Its ability to withstand high temperatures, resist corrosion, and provide exceptional strength and mechanical properties ensures the reliability, durability, and efficiency of power plants. By utilizing special steel, power generation companies can enhance their equipment's performance and reduce maintenance costs, ultimately contributing to the sustainable and reliable production of electricity.
- Q:What are the different mechanical properties of special steel?
- Special steels typically have enhanced mechanical properties compared to regular steels, which makes them suitable for specific applications. Some of the key mechanical properties of special steels include high tensile strength, excellent toughness, improved wear resistance, increased hardness, and enhanced corrosion resistance. Additionally, special steels can exhibit specific properties such as high heat resistance, low thermal expansion, and good machinability, depending on the alloying elements and heat treatment processes used during their production. These unique mechanical properties make special steels highly sought after in industries such as automotive, aerospace, construction, and manufacturing.
- Q:What is the impact of high temperature on the mechanical properties of special steel?
- High temperature has a significant impact on the mechanical properties of special steel. When exposed to high temperatures, special steel may undergo a phenomenon called thermal softening, where its mechanical strength decreases. This is primarily due to the reduction in the material's yield strength and hardness at elevated temperatures. One of the key effects of high temperature on special steel is the reduction in its ability to resist deformation. At elevated temperatures, the steel becomes more ductile, meaning it is more prone to elongation and plastic deformation. This increase in ductility can result in a decrease in the material's ability to maintain its shape and integrity under load, which can lead to distortion, warping, or even failure of the component. Furthermore, high temperatures can also cause changes in the microstructure of special steel. For instance, prolonged exposure to elevated temperatures can lead to the formation and growth of grain boundaries, which can weaken the material's mechanical properties. Additionally, high temperature can promote the diffusion of impurities or alloying elements within the steel, altering its chemical composition and potentially affecting its mechanical behavior. Another consequence of high temperature on special steel is the reduction in its resistance to corrosion and oxidation. At elevated temperatures, the steel is more susceptible to oxidation, which can result in the formation of scales or even complete material degradation. This can compromise the steel's mechanical properties, such as its strength and toughness. In conclusion, high temperature has a detrimental impact on the mechanical properties of special steel. It reduces the material's strength, increases its ductility, alters its microstructure, and decreases its resistance to corrosion and oxidation. Therefore, it is crucial to consider the effects of high temperature when designing and selecting special steel for applications that involve exposure to elevated temperatures.
- Q:Can special steel be used for tooling applications?
- Yes, special steel can be used for tooling applications. Special steel, such as high-speed steel or tool steel, is specifically designed to have superior hardness, wear resistance, and toughness, making it highly suitable for tooling applications where durability and precision are crucial.
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High grade spring steel wire
- Ref Price:
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- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
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OKorder Service Pledge
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