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Compression Springs Compression Springs

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Extension Springs Extension Springs

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Torsion Springs Torsion Springs

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Conical Springs Conical Springs

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Secondaries for Stock Springs

Buying stock springs has never been easier and we make sure that all your stock spring needs are met with our huge diversity of stock spring sizes and types. From conical to torsion we offer just what you need to make TheSpringStore.com your ultimate one-stop-shop for stock springs. In addition to our stock selection we have often been inquired about secondaries and today we want to share some of the commonly mentioned secondaries that are not part of the standard spring process.

Necessary Secondary Process: Heat Treating

Heat treating is a part of the standard spring process that all our springs pass through. It consists of heating the springs after coiling to allow them to release stress and be durable. There is no additional charge for this as it is part of the necessary steps to ensure that your spring is efficiently functional and resilient enough to withstand the determined load. However, all other secondary processes must first be quoted and agreed upon since these can only be offered on a case by case basis and do result in an additional charge. The following are three of the secondary options that you may hear of in the spring industry.

Non-standard Secondaries

Plating

Plating, short for “electroplating,” is a process by which the springs are given a desired finished look. This is quite common when springs form a visible part of the component and there needs to be a specific look to the spring. Some devices require springs to be different colors for functionality while others add the plating for merely aesthetic purposes. Regardless, the plating is an additional measure and secondary process that can really enhance the look of spring.

The most common type of plating is Zinc plating. We offer ASTM B633 zinc plating (blue, chrome in color, similar to silver looking bolt you find at Home Depot. Nickel plating is more aesthetically enhancing since it is much more lustrous than zinc and offers a beautiful finish but zinc is more economic. Black oxide is another great option for an aesthetically sound spring. Other options for plating include chrome plating, gold plating, and even clear plating.

Stock Spring Plating OptionsStock Spring Plating Options

Passivation

Passivation is an additional process that can make stainless steel further resistant to rust. It is important to note that we only passivate stainless steel because it is the only type of metal that can actually withstand the passivation process. Passivation is a chemical dip to remove the free irons and other surface contaminants on top of the stainless steel wires. ASTM- A967 is the common type of American Standard of Trade and Measure option.

Passivation improves the corrosive resistance and therefore is used most commonly in medical springs. This service is not just an additional cost but like all other secondary processes that are not standard will add additional lead time to your spring order. Remember that passivation cannot be done on music wire, hard drawn, etc since it is a very chemically strong process that will harm wire materials that are not stainless steel.

Stock Spring Passivation OptionsStock Spring Passivation Options

Shot peening

Shot peening is not very common because there are both upsides as well as strong downsides. It can be beneficial in certain cases but not all that recommended. At The Spring Store, we do not necessarily offer shot peening or powder coating. Shot peening is used to reduce stress on the spring which may, in turn, extend the life expectancy of the spring. When spring is coiled it inherently retains stress inside the coil. The springs must then relax, which is why heat treating is such a must and foundational process. However, shot peening is an additional form of stress relief that can be applied after heat treating. However, this is rarely necessary and can affect other aspects of the spring because of the procedure it puts the spring through.

During shot peening, the springs are placed in a type of dryer where they tumble and as the springs spin round and round there are little nozzles inside it that spray tiny micro pellets that bombard the spring. These micro pellets act like a silver powdery make-up that relieves the spring of stress on the surface of the metal and is meant to create a stronger spring. However, the tumbling and necessary movement of the process can cause the springs to entangle themselves and this may affect the tolerances on compression springs, damage the leg position on the torsion spring legs or screw up the hook line up on extension springs.

Springs Shot PeeningSprings Shot Peening

 

Meet All Your Stock Spring Needs

 

TheSpringStore.com has always prided itself on offering a great variety of stock springs ranging widely in all shapes and sizes. We are confident that you will find the exact spring you need in our immense stock spring offering. As part of our extended selection of springs, we also provided custom spring options through AcxeSpring.com, and should you need a stock spring with some secondaries we can discuss our currently available options and pricing. At TheSpringStore.com we always try to accommodate your needs. Contact us today at: (951) 276-2777