？ Cold rolled strip steel for Japanese springs Cold rolled strip steel has good performance, such as edge-quenching and cold laminability, good surface quality and forming property, and superior high-temperature strength; and because it can be used for press-forming, it is often used for various high-end springs.
The main classifications of cold rolled strip steel used in the production of Japanese spring products are: high carbon steel (including high carbon steel, medium carbon and low carbon steel); alloy-structure steel; stainless steel and so on.
High carbon steel accounts for the majority of cold rolled strip steel used in the production of Japanese spring products, with the materials mainly consisting of medium carbon or low carbon steel composed with C-Mn and C-Si elements. It has good elasticity and fatigue strength, and is most suitable for the production of general springs with constant linear force. Most cold-rolled strip steels used in the production of flat compression springs and torsion springs are high carbon steels.
Alloy-structure steel is mainly composed of C-Mn-Si, C-Si-Ni, C-Mn-Cr, and C-Si-Cr, etc. It has superior mechanical properties, such as good elasticity, fatigue strength, torsion strength, and anti-friction performance, makes it the most suitable alloy material for the production of floppy springs and dampers. Alloy springs such as spiral springs and double torsion springs, which require high intensity and toughness, mostly use this kind of steel strip.
Stainless cold-rolled strip steel is composed of C-Mn-Si, C-Si-Ni, C-Mn-Ni, C-Si-Cr, etc., and has superior corrosion resistance and surface cleanliness, making it an ideal material for food contact spring products. Besides, this kind of steel also has good mechanical properties, such as good elasticity and fatigue strength, so it is not only suitable for spring products in humid environment, such as valve spring, but also for connection of small-leverage parts in gasoline engines, such as valve torsion springs.
In conclusion, cold rolled strip steel has good performance and is widely used for various Japanese springs. Different types of steel have different strength, so choosing the right type of steel depends on the usage of the springs.
