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Cold Wound Coil Spring

Characteristic

  • Springs are molded in a cold state using the material of 0.1mm~15mm.
  • Material with high tension and high durability have rectangular and circular cross-section, etc.
  • Cylindrical shape is the most common. Cone-shaped or hourglass-shaped springs for special purposes are also available
  • For towing springs, there are various end shapes (e.g. hook-shaped, etc.)

Production video

Application

  • Automotive Engine Valve
  • Vibration-proong Device
  • Industrial Equipment
  • Marine Engine Valves
  • Nuclear Generation Equipment

Material

Types Standard No. Standard No. Application(Ref)
General Purpose Conduction Non-Magnetic Heat Resistance Corrosion Resistance Fatigue Resistance
Carbon Steel Wire KS D3510 HSW 3 ○          
Piano Wire KS D3556 PW2 ○         ○
Silicon chrome steel oil tempered wire for springs KS D3579 SWOSC-B ○          
Silicon chrome steel oil tempered wire for springs KS D3580 SWOSC-V           ○
Stainless Steel Wire KS D3535 STS 302 ○     ○ ○  
STS 304 ○     ○ ○  
STS 316 ○   ○ ○ ○  
STS 631J1 ○   ○ ○    
Copper Wire KS D5103 C2600
W-EH		   ○ ○   ○  
C2700 W-H   ○ ○   ○  
Nickel Silver Wire KS D5102     ○ ○   ○  
Phospho Bronze Wire KS D5102     ○ ○   ○  
Betillyum Copper Wire KS D5102     ○ ○   ○  
INCONEL X750 B637
No 7750		         ○ ○  

Order Specification

Semicircular Ring
Inverse Conical Ring
Circular Ring
Circular Side Ring

Matters to record when placing an order

Standing Item Labeling Requirement
By Client		 Remarks
1 Material   Calculation based on manufacturer standards unless otherwise specied
2 Wire Dia(d) mm  
3 Mean Dia(Dm) mm Selection between DE or DI
4 Out Dia(Do) mm DE tolerance management according to assembly conditions
5 Inside Dia(Di)
6 Active Turn(Na) Coil As per the design standard of
7 Inside Dia(Di)
8 Direction of wind Left, Right As per client's request
9 Free Height(Ho) mm For the spring for load control, refer to the free height
10 Spring Rate(K) kgf / mm  
11 Load Condition Specied Height(mm), Load(kgf) As per client's request
12 Type od Ends Butt end, Taper
13 Carry Out Shot-peening  
14 Finish Enamel, Power, Phosphate As per client's request
15 Application and Working Conditions Labeling requirement by client Application , Working Temperature, Humidity and Working Environment
16 Other Standards KS B2402, KS B2403