Immediately after coiling is completed the springs go into an oven (on a conveyor) that is between 700 & 800 degrees fahrenheit for a time between 45 & 60 minutes. After cooling the springs are subsequently shot peened in a tumbler style wheelabrater. These springs are big enough and take up...
There are a few other factors that may also be contributing to the premature failure. We shot peen these springs in a tumble wheelabrator, so the inside of the coil spring is not shot peened whereas the outside of the spring is. They are shipped overseas in containers that are fumagated before...
would a high sodium environment (salty air) cause corrosion quickly enough for a spring made from ASTM A401 (chrome silicon) to fail after a fairly small number of cycles? The springs are painted with liquid paint via a dip procedure. Any help would be great.
