The spring leaf is characterized by being easy to bend in only one direction - a smaller stiffness plane, while having greater tensile stiffness and bending stiffness in the other direction. Therefore, leaf springs are very suitable for use as sensitive components, elastic supports, positioning devices, flexible connectors, etc. in test instruments or automatic devices.
So how are spring sheets made? Let’s introduce them from three points:
1. Selection of materials. Choosing the material from which leaf springs are made is a complex process. Spring leaf materials are generally required to have high elastic limit, fatigue limit, impact toughness and good heat treatment properties. Therefore, commonly used spring materials include carbon spring steel, alloy spring steel, stainless steel spring, copper alloy, etc.
2. Production. Spring sheets can be cold rolled or hot rolled. Generally, spring sheets smaller than 8mm are cold rolled, and spring sheets larger than 8mm are hot rolled. According to the properties of the selected material and the manufacturing method, the spring leaf should be made into different types according to its application in different environments and functions.
3. Due to different materials, some spring sheets need to be suppressed or shot blasted after being cold-rolled or hot-rolled, so that they can fully exert their effect.
Spring leaf springs can be divided into two categories: straight leaf springs and curved leaf springs according to their shapes. There are several shapes of spring plates. According to the shape of the plate, it can be divided into rectangle, trapezoid, triangle, stage shape, special shape, etc. The most common one is rectangle. Because the spring leaf has to withstand vibration and work for a long time, such as load-bearing capacity, the requirements for the spring leaf are also high. The spring leaf is required to have a high fatigue limit, a good elastic limit, sufficient toughness, etc. Therefore, the process of making a spring leaf is not simple. After it is made, it must be scientifically tested before it can be traded in the market.