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SPRINGS (251 companies)
SPRINGS - Automotive (53 companies)
SPRINGS - Bed, Box, Mattress (20 companies)
SPRINGS - Belleville Disc (0 companies)
SPRINGS - Coil (42 companies)
SPRINGS - Compression (27 companies)
SPRINGS - Extension (18 companies)
SPRINGS - Flat (15 companies)
SPRINGS - Furniture (7 companies)
SPRINGS - Gas (7 companies)
SPRINGS - Leaf (4 companies)
SPRINGS - Mechanical (18 companies)
SPRINGS - Power (1 company)
SPRINGS - Precision (42 companies)
SPRINGS - Steel (14 companies)
SPRINGS - Stock (6 companies)
SPRINGS - Torsion (13 companies)
SPRINGS - Wire (28 companies)
DIE SPRINGS (3 companies)
FASTENERS - Spring (6 companies)
HINGES - Spring (3 companies)
SPRING MACHINERY (4 companies)
SPRING STAMPINGS (3 companies)
SPRING STEEL (1 company)
SPRING WIRE (7 companies)
WINDOW SASH SPRINGS (1 company)
A spring is an elastic object that is used to store mechanical energy.
Spring designs are often referred to coil springs and depending on the design and required operating environment, any material can be used to construct a spring as long as the material has the required combination of rigidity and elasticity.Some materials used in the manufacturing of springs are:
• Hardened steel
Conical springs – which are compression springs, smaller at one end than the other and are found in pens and automobile engines.
Variable – these are pitch or extension springs, which start of light but become heavier as loads are placed on them. Usually found in screen door hinges.
Torsion Springs – are also attached at both ends but they work at a 0 degree angle. When they take a load, the springs rotate on axis, example is a mouse-trap.
Belleville Springs – or washers, resemble a slightly tapered disc and is normally used in conjunction with fasteners.
Leaf Springs – are used in vehicle suspensions. They are several flat bands of steel piled on top of each other and cut to sequentially shorter lengths.
Snap springs – these are single rings
Nested compression springs - compression springs that are stronger than any single spring can be.
Manufacturing Process of Springs:
Coiling-compression springs are the most common type of spring manufactured.
Mechanical and CNC (a process used in the manufacturing sector that involves use of a computer to control machine tools) are used to coil springs. Rollers work in pairs and force the wire through the wire guide toward the coiling point. Large wire feeders force the wire through the coiling points which in turn force the wire round the mandrel which produces the desired spring coils.The number of coil can be adjusted by the amount of the wire feed. Pitch spacing and the free length of the spring is governed by the spacing tool.
Before the process begins, tooling maybe required. Mandrels may need ground or to be created to ensure proper bend radius.
Stress Relief – Spring wire that gets shaped has to have the bending stress relieved in the form of heat treating. Various wire materials require different lengths of time for stress relief.
The process of baking out the stress in the wire may change the dimension of the spring. Stainless steel coils generally expand slightly when heated while music wire coils will generally contract slightly.
Grinding – Is a common requirement for compression springs. The ends of the springs are grounded flat. This process is completed on an automatic grinding machine, which consists of a round plate into which bushings are fitted. The bushings are of a size that will allow the springs to fit in a position, leaving small amounts of the springs protruding on the top and bottom.
A grinding wheel then grinds the ends of the springs flat and square.
Finishing Touches - Some maybe necessary while others are required to accommodate a specific spring design:
• Powder coating
• Electro polishing
• Magna Flux
Purchasing springs from the right manufacturer is of utmost importance:
• Springs need to be high quality
• Purchase should stay within budget
• Shipment should be on time
Customer Service – manufacturer should be accessible at all time throughout the purchasing process. Keeping regularly in touch, will enable you to have a good understanding of exactly what is happening to your purchase order so as to ensure no errors are made on the manufacturer’s end. The springs you received should be exactly what you ordered.
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