How to build your own spring

I wonder what your technical requirements are? The real spring must first have spring steel, which needs to go to the special steel market. Low carbon steel can also be used instead of low quality steel, but its performance is much worse. No matter what kind of steel is selected, the first step in making the spring is heat treatment and setting. The raw materials are heated to above 800 degrees, and then the iron is struck while it is hot, so that a simple shape can be achieved. If the shape is complex and cannot be processed in a short time, it needs annealing, because repeated heating forging is prone to quality problems such as cracks. Therefore, at this time, in order to choose direct annealing and then processing qualitative, even spring steel will lose its elasticity at this time, and processing and forming are very easy.

When it is necessary to restore elasticity, it can be done by another heat treatment, namely quenching. Of course, there are many quenching processes, such as fresh water quenching, salt water quenching, oil invasion quenching and so on. Generally speaking, spring steel is quenched by oil invasion.