Many people may not know this, but the fans, doors and windows we use at home, the LCD displays we use at work, and the shelves and display cabinets used in shopping malls all use mainsprings.
According to unofficial statistics, under normal use, a high-quality mainspring can last for more than ten years, or even longer. However, if the quality of the mainspring is not up to standard, or if it is used improperly, it may fail prematurely. Next, let’s take a look at the factors that can cause a mainspring to be damaged too early.
First, using it at a temperature above the specified limit will cause the spring’s elasticity to decrease or even be lost.
Second, the quality grade is mistaken: an ordinary spring is unintentionally or intentionally used as a premium spring or an imported spring, resulting in insufficient spring force.
Third, the standard/model selection is unreasonable: in order to save money, a lighter-load type is chosen that cannot withstand a heavier load, resulting in insufficient spring force.
Fourth, people focus only on parameters such as outer diameter, inner diameter, and length, while often ignoring the wire’s cross-sectional area and the pitch, which leads to insufficient spring force.
Fifth, the wire material itself is too soft, or the quenching temperature is too low, or the holding time is not long enough, or the tempering temperature after forming is too high and the time is too long. These issues reduce tensile and compressive strength and result in insufficient spring force. This is the real cause of inadequate elasticity.
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