The concept of spring steel specializing in the production of agent spring steel Characteristics of spring steel Characteristics of spring steel Application of spring steel Spring steel Steel introduction...
The concept of spring steel: Spring steel is steel that is specially used to make springs and elastic elements due to the elasticity in the quenched and tempered state. The elasticity of steel depends on its elastic deformation ability. Jinguang is within the specified range. The ability of elastic deformation allows it to withstand a certain load, and no permanent deformation occurs after the load is removed.
The characteristics of spring steel: The spring works mainly under dynamic load, that is, it works under the impact, vibration or alternating stress, and it uses elastic deformation to absorb the impact energy and act as a buffer. Jinguang springs are used under impact, vibration or long-term stress, so spring steels are required to have high tensile strength, elastic limit, and high fatigue strength.
Characteristics of spring steel : spring steel should have excellent comprehensive properties, such as mechanical properties (especially elastic limit, strength limit, yield strength ratio), anti-emulsion performance (ie, anti-elasticity reduction performance, also called anti-relaxation performance), fatigue Performance, hardenability, physical and chemical properties (heat resistance, low temperature resistance, oxidation resistance, corrosion resistance, etc.). Jinguang In order to meet the above performance requirements, spring steel has excellent metallurgical quality (high purity and uniformity), good surface quality (strictly controlled surface defects and decarburization), precise shape and size.
MITOO PRECISE requires spring steel in the process to have good hardenability and low overheating and decarburization sensitivity. Reducing the surface roughness of the spring can increase the fatigue life. Jinguang In order to obtain the required performance, spring steel must have a high carbon content. Carbon spring steel is carbon content WC in the range of 0.6%-0.9%, because of the poor hardenability of carbon spring steel, it is only used to produce springs with a cross-sectional dimension of not more than 1.-15mm. For springs with larger cross-sectional dimensions, alloy spring steels must be used. The alloy spring steel contains between 0.45 and 0.75% carbon. The alloying elements added are Mn, Si, W, V, Mo, etc. Their role is to increase the hardenability. Sex and back stability, strengthened ferrite and refined particles, effectively improve the mechanical properties of spring steel, which Cr, W, Mo can also increase the high temperature strength of the steel. In recent years, Jinguang has integrated China's resources and developed new steel grades based on Si, Mn steel, boron, niobium, molybdenum and other elements in accordance with the requirements of new technologies for automobiles and tractors. This has extended the service life of springs and increased the Spring quality.
Plate spring steel, spring steel rod, with a spring steel, spring steel wire, manganese steel sheet
The use of spring steel: spring steel high precision, good toughness, good wear resistance, quality and stability.
The main spring steels are widely used and can produce various important springs with a medium cross section <25mm. For example, 60Si2Mn 55Si2MnB 55SiMnVB Cr series 50CrVA such as automobile, tractor leaf spring, coil spring, etc. are excellent in hardenability, and have high tempering stability. Low tendency of carbon and graphitization; good comprehensive mechanical properties, certain corrosion resistance; springs containing V, Mo, W and other elements have certain high temperature resistance; as all high quality steels, fatigue performance is further improved. Heavy duty heavy duty large (50~60mm) springs such as engine valve springs, conventional weapon hook springs, and springs; heat-resistant springs such as boiler safety valve springs, injector springs, and cylinder expanders are manufactured.
Spring Steel Strip products are suitable for shock absorber valve, clutch diaphragm spring, air-conditioning compressor valve, knitting machine parts, sinker, ha negative, knitting needle, Shengke film, various printing scraper, annular belt knife, etc. , Metal stamping springs, springs, springs, tensile parts, anti-spring high quality products.
Spring steel grades:
Japanese spring steel: SUP6 SUP7 SUP9 SUP9A SUP10 SUP11A SUP12 SUP13 SUJ2 SUJ3 SUJ4 SUJ5 SUP10-CSP SK55-CSP SK85-CSP S70C-CSP S65C-CSP S60C-CSP S55C-CSP S50C-CSP sk5 sk7 sk3 sk4
Korea spring steel: SPS1 SPS3 SPS4 SPS5 SPS5A SPS6 SPS7 SPS8 SPS9 STB1 STB2 STB3 STB4 STB5 SH590P SH590S
Swedish spring steel 1912 1914 1922 1926 1940 1957 1973
British spring steel: 38Si7 45SiCrV6-2 46Si7 46SiCrMo6 50SiCrMo6 51CrV4 52CrMoV4 52SiCrNi5 54SiCr6 54SiCrV6 55Cr3 56Si7 56SiCr7 60Cr3 60CrMo3-1 60CrMo3-2 60CrMo3-3 60SiCrV7 61SiCr7 251A85 251A60 251H60 525A58 525A60 525H60 525A61 658A57 658A57 704A60 705A60 705H60 735A51 735H51 735A54 805H60 925A60 251A85 251A60 251H60 525A58 N525A60 535A99 805A20 832H13
Germany spring steel: C67S CK67 C75S CK75 C85S CK85 C100S CK101 38Si6 38Si7 46Si7 51Si7 56Si7 55Si7 1.1231 1.1248 1.1269 1.1274 1.5022 1.5023 1.5024 1.5025 1.5023 1.5028 1.5029 15142 1.5225 1.7102 1.7103 1.7106 1.7018
International standard spring steel: 38Si7 46Si7 51CrV4 52CrMoV4 55Cr3 55SiCr6-3 55SiCrV6-3 56SiCr7 60Cr3 60CrMo3-3 60Si8
U.S. spring steel: ASTMA228 ASTMA227 ASTMA679 ASTMA229 ASTMA231 ASTMA232 ASTMA878 ASTMA401 AISI302 ASTMA313 AISI316 ASTMA313 AISI631 A-286 Inconel718 InoconelX-750 AMS5698 AMS5699 AISI1050 ASTMA682 AISI1074
Chinese Spring Steel: 65 70 75 80 85 65Mn 55Si2Mn 55Si2MnB 55SiMnVB 60Si2Mn 60Si2MnA 60Si2CrA 60Si2CrVA 60CrMnA 50CrMn 55CrMnA 50CrVA 60CrMnBA 60CrMnMoA 30W4Cr2VA 100CrMn6 100CM6 100CrMn7 100CrMnMo8 100CrMo7-2 100CD7 100CrMo7-3 100CrMo8-3 8E3 C54E4 C55E3 C70E3 X12MoCrNi4-4-3X46Cr13 X75WCrV18-4 -1 X82WMoCrV6-5-4 Z85WDCV6 X89CrMoV18-1 X105CrMo17 Z100CD17
More Spring Steel Details
Heat Treatment Characteristics The heat treatment of spring steel depends on the forming method of the spring. Generally, it can be divided into hot forming spring and cold forming spring.
1) Thermoformed springs For large and complex shaped springs with cross-sectional dimensions >10mm, thermoforming (eg hot rolling, hot coiling) is used, such as leaf springs and coil springs for automobiles, tractors, trains. The concise processing route is: Jinguang Flat Steel or round steel cutting → heating bending or winding → tempering tempering in the middle → surface shot peening processing, using the state organization of tempered fortress body. Shot peening can strengthen the surface and improve the surface quality of the spring, significantly improving fatigue performance.
2) Various small springs with cold forming spring cross section size <10mm can be cold formed (such as cold rolled, cold rolled), such as coil springs, springs and springs in the instrument. These springs are cold-drawn (cold-rolled), tempered and tempered in the middle or quenched in the lead bath and then cold-drawn (rolled) before being formed; then cold-formed and then further strengthened in the process, but also produced Large internal stress and brittleness, so it should be followed by low-temperature stress relief annealing (generally 200 ~
400 °C).
Plate spring steel, spring steel rod, with a spring steel, spring steel wire, manganese steel sheet
Plate spring steel, spring steel rod, with a spring steel, spring steel wire, manganese steel sheet
Plate spring steel, spring steel rod, with a spring steel, spring steel wire, manganese steel sheet
Plate spring steel, spring steel rod, with a spring steel, spring steel wire, manganese steel sheet
Plate spring steel, spring steel rod, with a spring steel, spring steel wire, manganese steel sheet
Plate spring steel, spring steel rod, with a spring steel, spring steel wire, manganese steel sheet
Plate spring steel, spring steel rod, with a spring steel, spring steel wire, manganese steel sheet
