Always strong tell everybody to want to increase the service life of the spring, need to do the following in the production of some processing.
spring isothermal quenching: can be used for small diameter or hardenability enough spring isothermal quenching, which can not only reduce, but also can improve the tenacity.
Best again after isothermal quenching tempering, can improve the elastic limit, tempering temperature and isothermal quenching temperature are the same.
spring relaxation process: spring work long time under the action of external force, due to the stress relaxation, produces the trace of permanent (
Plastic)
Spring deformation, especially the high temperature, under high temperature stress relaxation phenomenon is more serious, reduce the precision of the spring, the general
precision spring is not allowed.
Therefore, this type of spring should be relaxed after quenching and tempering treatment.
Heat treatment process: the spring preload, make its deformation than the spring work possible deformation.
Then work in the above temperature 20 ℃ under the condition of heating, heat preservation 8 ~ 24 h.
thermomechanical treatment, heat treatment deformation is the deformation strengthening and heat treatment strengthening combination of steel, further improve the strength and toughness of steel.
Thermomechanical treatment are high, moderate in low temperatures.
High temperature thermomechanical treatment is produced under the stable state of austenite deformation immediately after quenching, can also be combined with forging or hot rolled, namely thermoforming immediately after quenching.
60 si2mn steel manufacturing automobile plate spring, after the high temperature thermomechanical treatment (
930 ℃ + 18% thermal variables, oil quenching)
Later, with 650 ℃ by 3.
25 min high temperature tempering, and its strength and fatigue life have been greatly improved.
shot blast, shot peening treatment is currently the most widely used one of the ways to improve the surface quality of the spring.
Spring requires a higher surface quality and surface defects such as scratches, folding, oxidation decarburization tend to become spring work place of stress concentration and fatigue fracture source.
If with tiny high-speed spray the surface of the spring, steel shot peening treatment, not only improve the surface quality of the spring, to improve the surface strength, make the surface in the compressive stress state, and thus improve the spring fatigue strength and service life.
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The major classifications of are leaf spring hardware, leaf spring hardware, leaf spring hardware and leaf spring hardware machines.
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Dongguan Yongqiang spring hardware Co.,Ltd. is a team of manufacturers who have 10+ year experience on creating business plans and other types of productions with top-tier management firms and various multinational corporates.
