Alloy steel
A technology of alloy steel and mass percentage, which is applied in the field of alloy steel, can solve problems such as temper brittleness, easy decarburization, easy quenching cracking, etc., achieves reduced overheat sensitivity and decarburization tendency, excellent heat treatment performance, and reduced graphitization Effect
Active Publication Date: 2014-02-19
宁波韵升弹性元件有限公司 +1
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Problems solved by technology
65Mn manganese spring steel has the disadvantages of easy decarburization, overheat sensitivity and temper brittleness, and is prone to cracks. This material is mainly used for flat scroll springs with low requirements
60Si2MnA silicomanganese spring steel improves the hardenability of spring steel by adding two elements of silicomanganese, improves the hardness, strength, elastic limit, yield ratio and fatigue strength of the material, as well as tempering stability and oxidation resistance. Wide range of planar scroll spring materials, but the increase in silicon content is prone to graphitization and surface decarburization tendency, and it is easy to generate more silicate inclusions in steel, which is easier to quench and crack, and also limits the use of 60Si2MnA materials in Application of high-end planar scroll spring
Method used
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Embodiment Construction
[0014] The present invention will be further described below in conjunction with embodiment.
[0015] In order to obtain the alloy steel material that meets the performance requirements and ensure that the scroll spring can meet the needs of working under different conditions, the present invention obtains the alloy steel products of Examples 1-6 by changing the ratio of trace elements in the alloy steel, and its specific composition See Table 1.
[0016] Table 1 spring commonly used materials and alloy steel composition of the present embodiment
[0017]
[0018] The alloy steel material obtained in Table 1 is made into a scroll spring, and the properties of the obtained product are shown in Table 2.
[0019] Table 2 Performance comparison of existing materials and alloy materials of embodiments of the present invention
[0020]
[0021] It can be seen from Table 2 that the tensile strength, yield point, spring life and toughness of the alloy steel materials obtained ...
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The invention relates an alloy steel. The alloy steel contains the following components in percentage by mass: 0.56-0.64% of carbon, 1.2-1.6% of silicon, 0.4-0.6% of manganese, 0.4-0.8% of chromium, 0.1-0.2% of vanadium, 0.08-0.15% of tungsten, and the balance of iron. The material proportion of the alloy steel is changed, the manganese content is appropriately reduced, and refinable grains of rare metal elements such as chromium, vanadium and tungsten are appropriately added, so that excellent heat treatment performance is obtained, the overheating sensibility and the decarburizing tendency of the steel are lowered, the phenomenon of graphitization of a steel material in the process of heat treatment is greatly decreased, the surface quality is improved, the toughness, the strength, the elastic limit and the fatigue strength of the material are increased, the phenomenon of quenching crack is reduced, and the alloy steel can be applied to high-grade spiral springs.
Description
technical field [0001] The invention relates to an alloy steel. Background technique [0002] At present, there are two main types of steel used in the production of planar scroll springs: 65Mn manganese spring steel and 60Si2MnA silicon manganese spring steel. 65Mn manganese spring steel has the disadvantages of easy decarburization, overheat sensitivity and temper brittleness, and is prone to cracks. This material is mainly used for flat scroll springs with low requirements. 60Si2MnA silicomanganese spring steel improves the hardenability of spring steel by adding two elements of silicomanganese, improves the hardness, strength, elastic limit, yield ratio and fatigue strength of the material, as well as tempering stability and oxidation resistance. Wide range of planar scroll spring materials, but the increase in silicon content is prone to graphitization and surface decarburization tendency, and it is easy to generate more silicate inclusions in steel, which is easier to...
Claims
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IPC IPC(8): C22C38/24C22C38/34
Inventor 竺韵德华启升王庆忠魏利剑
Owner 宁波韵升弹性元件有限公司