Springs are widely used. They can be used to store energy, reduce vibration and measure force. In mechanical and electrical products, there are many kinds of springs. In order to ensure that the spring can work reliably, the material shall meet the requirements of high strength limit and yield limit. Therefore, the choice of spring material is very important!
1: Carbon spring steel: this kind of spring (such as 65, 70 steel, etc.) has the advantages of low price and convenient source of raw materials, but the disadvantages are low elastic limit, easy to lose elasticity after repeated deformation, and can not work normally at 130 ° C.
2: Silicon manganese spring steel is a kind of steel (for example, 60Si2Mn). Because silicon is added to the steel, the elastic limit can be significantly improved and the tempering stability can be improved. Therefore, it can be tempered at a higher temperature to obtain good mechanical properties. Silicon manganese spring steel has been widely used in industry. It is generally used to manufacture various springs, such as leaf springs and coil springs of automobiles, locomotives and tractors, cylinder safety valve springs and some important springs working under high stress, and springs with severe wear.
3: Compared with carbon spring steel, low manganese spring steel (such as 65Mn) has the advantages of better hardenability and higher strength; The disadvantage is that cracks and thermal brittleness are easy to occur after quenching. However, due to its low price, it is generally used to manufacture various small-section flat springs, round springs, springs, etc. in general machinery, as well as valve springs, spring rings, shock absorbers, clutch springs, brake springs, etc.
4: Chromium vanadium steel the purpose of adding vanadium to this steel (such as 50CrVA) is to refine the structure and improve the strength and toughness of the steel. This material has good milk fatigue and impact resistance, and can work reliably at the temperature of - 40 degrees to 210 degrees, but the price is expensive. It is mainly used in the occasions with high requirements, such as for manufacturing springs in aero-engine control systems. Z rear spring net reminds spring purchasers that when purchasing Kunshan spring materials, they need to look at the above aspects and consider the use, importance, use conditions, processing, heat treatment and economy of the spring.
