The key process details to consider when manufacturing compression springs include the following:
Material Selection: Choosing the right material is crucial. Commonly used materials include carbon spring steel wire, oil-quenched and tempered spring steel wire, and stainless steel spring steel. Different materials have different performance characteristics, such as high-temperature resistance and corrosion resistance.
Spring Coiling Process: Spring coiling is a fundamental step in manufacturing compression springs. It can be done by cold coiling or hot coiling. Cold coiling is suitable for small springs, while larger springs are usually hot-coated.
Heat Treatment: The heat treatment process is essential for improving the durability and performance of springs. This includes stress-relieving annealing, quenching, and tempering to eliminate internal stress and enhance the spring's elasticity and strength.
End Processing: The ends of compression springs may require special processing, such as grinding or flattening, to meet specific installation requirements.
Surface Treatment: Surface treatments such as shot peening, coating, or electroplating can improve the spring's corrosion resistance and wear resistance, extending its service life.
Dimensional Accuracy: During manufacturing, the dimensional accuracy of the spring must be strictly controlled, including wire diameter, pitch diameter, and pitch, to ensure that the spring's performance meets design requirements.
Performance Verification: After design completion, the spring's performance needs to be verified, including spring characteristic verification, fatigue strength verification, resonance calculation, and stability calculation, to ensure the spring's reliability and stability under operating conditions.
Tolerance Control: During design, tolerances should be reasonably allocated, using commercial tolerances to reduce costs while ensuring that manufacturing process capabilities meet design requirements.
Perpendicularity Requirements: For springs requiring stricter perpendicularity, special attention must be paid to the costs associated with winding and grinding settings during manufacturing.
Environmental Factors: The spring's operating environment, such as temperature, humidity, and chemical media, must also be considered during manufacturing to ensure that the spring material can withstand these conditions.
