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 Custom Coil Springs - Hot Coiled - Cold Coiled Alerter l'administrateur Recommander à un ami Lien de l'article 

Custom Coil Springs - Hot Coiled - Cold Coiled Coil Spring  A custom coil spring is open helical spring that offers resistance to a compressive force applied axially. Custom coil springs are usually coiled as a constant diameter cylinder. Most coil springs with material diameters under three-eighths inch are cold coiled. Almost all custom coil springs using over five-eighths in. bar stock are hot coiled. There is an overlapping area from three-eighths in. to five-eighths in. material size in which the custom coil springs may be either cold coiled or hot coiled. The transportation industry is the largest user of hot coil spring . Agricultural implement manufacturers and construction equipment builders make up the next largest segment. Custom hot coiled coil spring that are to be subjected to elevated temperatures or operate in a corrosive environment require the use of heat-treatable exotic alloys such as Inconel X 750, precipitation hardening stainless, and even en tungsten bearing tool steels. However, most hot-coiled coil springs are made from bars of carbon or alloy steel. These bars are produced to fine grain practice and are ordered as special bar quality to insure minimum surface imperfections. Surface imperfections can be prevented completely by cold finishing or centerless grinding the bars. Since a large portion of the cost is in the material, however, this can significantly increase the cost of hot coiled coil springs. The finished hardness requirement for most hot coiled custom coil springs is in the range of Rockwell C 44-49. In cases involving special materials and improved surfaces, final hardness as high as Rockwell C 53 may be necessary to withstand and design stresses. It should be noted that as hardness increases above Rockwell C 48 ductility and toughness of the steel falls off rapidly. Springs made to a hardness of Rockwell C53, for example have been known to shatter under a constant load. A wire manufacturer should be consulted for the best and most readily available alloy and optimum hardness for each application. Coil Spring Custom hot-coiled coil springs are usually preset. They are wound to a length greater than the finished length, heat treated, then compressed solid one or more times to bring them to the specified length. Presetting introduces beneficial residual stresses which allow the springs to support greater loads than would otherwise be possible. This does not increase service life. Actually, since it allows higher stresses, presetting can materially decrease the service life. Service life is increased by shot peening, which is particularly effective when both the hardness and working stress are high. Hot-rolled bars, even when ordered as special bar quality, can have seams and significant decarburization. Making the material acceptable requires 90 percent minimum surface coverage and high peening intensities usually in the range of .006 - .010 C. Turned or centerless ground bars require less intensive peening typically in the range .012 - .020 A, but still with 90 percent coverage. Rust leads to pitting and pitting to early failure, so some form of protective finish is recommended. The kind of coating required will depend on the environment which the springs are expected to encounter in storage and service. Commonly used coatings, and, in some in-stances, cadmium or zinc plating. Custom coil spring which must be extremely reliable usually require magnetic particle inspection and may have to meet a specification that "no true indications of defects shall be found." There should be a clear understanding between supplier and purchaser on this point, for there can often be "indications" which will not significantly affect performance in a specific high-duty application

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 15-01-2015 à 07h34

 Coil Spring that offers resistance to a compressive force applied axially Alerter l'administrateur Recommander à un ami Lien de l'article 

A Compression Spring is an open-coil helical spring that offers resistance to a compressive force applied axially. They may be cylindrical, conical, barrel shaped, or concave in form. There are four different end types for a compression spring; the most common being closed and ground. Other end types include closed only, open only, and open and ground. Tinmy Coil Spring Works Inc. specializes in the design and manufacture of custom compression springs of all sizes and types. We are capable of working with a wide range of wire sizes from 0.008” and up. Our vast array of in-stock materials includes stainless steel, music wire, chrome silicon, hard drawn, and oil tempered wire, allowing for quick lead times. Tinmy Coil Spring Works Inc. also manufactures custom compression springs out of a variety of specialty wires including Inconel, Elgiloy, Hastelloy, Titanium, Chrome Vanadium, Monel, Beryllium Copper, Phosphor Bronze, and Copper to meet our customers’ specifications. At Tinmy Coil Spring Works Inc., we pride ourselves in turning our customers’ concepts into reality: If you can think it, we can do it!

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 13-01-2015 à 02h13

 Coil springs or helical springs fall into four broad categories Alerter l'administrateur Recommander à un ami Lien de l'article 

Coil spring or helical springs fall into four broad categories: compression springs, extension springs, torsion springs and spring guides.  They are used in a wide range of applications, from tiny medical devices to automobiles to industrial equipment. Coil springs must be made to precise specifications in both size and material in order to perform properly, and at D.R. Templeman, we specialize in manufacturing custom coil springs for your most demanding applications. D.R. Templeman is the small springs specialist; a well-equipped manufacturer of coil springs in the following sizes: Compression, Extension, Torsion and Double Torsion Springs Wire Diameter – 0.004” [0.1 mm] to 0.080” [2.0 mm] Coil Outside Diameter – 0.030” [0.75 mm] to 3.0” [76 mm] Length – Up to 50” [125 cm] Spring Index – 4 to 24 (Mean Coil Diameter divided by Wire Diameter) Round Wire Spring Guides Wire Diameter – 0.004” [0.1 mm] to 0.025” [0.64 mm] Coil Outside Diameter – 0.015” [0.38 mm] to 0.125” [3.2 mm] Lengths – Up to 50 Feet [15 meters] Spring Index – 2.2 to 4.5  (Mean Coil Diameter divided by Wire Diameter) Flat Wire Spring Guides Wire Thickness – 0.006” [0.15 mm] to 0.018” [0.46 mm] Wire Width – 0.009” [0.23 mm] to 0.030” [0.76”] Coil Outside Diameter – 0.025” [0.64 mm] to 0.100” [2.5 mm] Lengths – Up to 30 Feet [9 meters) Spring Index – 2.5 to 5  (Mean Coil Diameter divided by Wire Diameter) Miniature Springs Wire Diameter – down to 0.004” [0.1 mm] Coil Outside Diameter – down to 0.025” [0.64 mm] Spring Index – down to 2.5 (Mean Coil Diameter divided by Wire Diameter) In addition to our custom coil spring manufacturing capabilities, we offer an extensive line of stock springs in our compression, extension and torsion springs and spring guides in our online catalogs.  

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 04-01-2015 à 08h59

 Coil Springs are vital to vehicles support the weight of your car Alerter l'administrateur Recommander à un ami Lien de l'article 

Coil Spring are vital to vehicles because they support the weight of your car and allow it to remain stable even in rough driving conditions. They have the ability to expand when you hit dips on the road and compress when you encounter bumps or cut into hard corners. A certain kind of spring, called air spring, can also keep your trunk off of the ground and determine ride height, which in turn influences steering and suspension. There are different types of springs for each kind of automobile and truck depending on your vehicle's suspension design, but the the most common is the coil spring. A coil spring (also called helical spring) is a kind of torsion spring which can store energy and release it later when needed. It can also absorb shock and maintain the force between two contacting surfaces. Together with a shock absorber, coil spring are pre-assembled as one coil over unit before installation. While the coil spring compresses and stretches to keep you safe as you drive, the shock absorber keeps you from road noise, bumps, and vibrations that you might encounter while doing so. All in all, a coil over is essential in your vehicle's suspension because it gives you optimal damping, good handling and braking, and a comfortable ride all at the same time

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 30-12-2014 à 10h30

 New Composite Coil Spring Shaves Weight - Enhances Vibrational Comfort Alerter l'administrateur Recommander à un ami Lien de l'article 

Keen on trimming weight wherever and however it can, Audi has teamed up with an Italian supplier to develop a lightweight coil spring made of fiberglass-reinforced polymer (GFRP). Set to debut in a yet-unnamed “upper mid-size model” sometime this year, the spring is easily differentiated from typical steel springs by its light green color, slightly larger overall diameter, and lower number of coils. Weighing approximately 3.5 pounds, the coil springs are roughly 40 percent lighter than comparable steel units, which tip the scales at about 6 pounds each. A set of four of the new coils provides a weight savings of about 9.7 pounds. The core of the spring is made up of long glass fibers, which are twisted together and then impregnated with an epoxy resin. The core unit is then wrapped with additional glass fibers by a special machine that maintains the application at alternating angles of plus/minus 45 degrees relative to the longitudinal axis. (These tension and compression plies mutually support one another to optimally absorb the stresses acting on the component.) Once assembled, the epoxied blanks make a trip through a 212-degree oven for final curing. Comparison Test: 2010 Bentley Continental Flying Spur Speed vs. 2011 Rolls-Royce Ghost Audi A6 Research: Pricing, Photos, Reviews, and More Feature: Prime Cuts: Slicing Open Four Types of Shock Absorbers Audi says the GFRP springs can be precisely tuned to their respective task, pointing out that the material won’t corrode, even after acquiring stone chips; the compression spring are impervious to chemicals such as wheel cleaners. The company also claims that making the GFRP units requires far less energy than the production of steel springs. Audi R&D chief Dr. Ulrich Hackenberg notes that even though the springs save only a couple of pounds, that weight is removed from a “crucial location in the chassis system,” which, he claims, will make “driving more precise and”—alert your passengers—”enhance vibrational comfort.” The concept of a composite spring isn’t exactly new; after all, Chevrolet introduced the fully composite-sprung C4 Corvette of 1984. Unlike the Audi’s composite coils, which will replace the steel springs at all four corners, the Vette’s suspension was supported by a single transverse leaf spring at the front and the rear. Fun fact: The current C7 Corvette Stingray still uses the same leaf-spring setup—and to good effect. We’re eager to try out Audi’s new springs and, uh, analyze their enhanced vibrational comfort.

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 29-12-2014 à 09h53


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