Induction coil

✅ 4. Comparison of Induction Coil Types for HF Welding

📌 Selection Tips

• Small pipes (<50 mm): Spiral coil is recommended for its simplicity and cost-effectiveness.

• Medium pipes (50–150 mm): U-shaped coils offer efficient, focused heating.

• Large or irregular pipes (>150 mm): Saddle coils cover a wider area and handle complex profiles.

• High-efficiency requirements: Ferrite core coils help reduce energy loss and improve heat focus.

• Versatile production lines: Adjustable coils are ideal for lines requiring flexibility in pipe diameters.

✅ 5. Working Principle

1. The HF generator sends current to the induction coil.

2. A strong high-frequency magnetic field is created around the coil.

3. As the pipe passes through the coil, eddy currents are induced at the edge surfaces.

4. These currents generate localized heat at the pipe’s seam (skin effect + proximity effect).

5. When the pipe edges reach the fusion point, squeeze rollers press them together to form a solid weld without filler material.

✅ 6. Technical Parameters (Typical Values)

✅ 7. Summary

• The induction coil is a key part of HF welding, enabling non-contact, high-speed seam welding for pipe production.

• Coil shape and size are customizable to match pipe diameter and welding specifications.

• High durability, excellent thermal conductivity, and magnetic field efficiency are critical for stable, continuous production.

• Proper cooling and maintenance significantly extend coil life and welding consistency.

1. Enter Section Equipments
2.  
3. 1. Coil car and Storage
4. 2.Single And Double Heads Un-coiler & Hydraulic And Pneumatic Un-coiler
5. 3.Peeler and hold down roll arm
6. 4.Flattening Machine
7. 5.Automatic and Semi Auto Shearer & Butt Welder
8. 6.Vertical Cage Accumulator​ & Horizontal Loop Accumulator & Landing Horizontal Spiral Loop Accumulator
   

1.  
2. 1. 와류기
3. 2. 솔기 어닐링 기계
   
4. 3. 스트레이트너 머신
   
5. 4. 챔퍼 및 엔드페이서 머신
   
6. 5. 하이드로 테스터기
   
7. 6. 스레딩 머신
   
8. 7. 페인팅 및 오일 머신
   
9. 8. 자동 묶음 포장기

1.  
2. 1. Rollers, Moulds, Dies, D2,D3 material to choose
3. 2. 페라이트, 임페더, 유리섬유 튜브
   
4. 3. HSS 톱날, TCT 톱날, 마찰 톱날
   
5. 4. OD 버 제거 인서트, ID 버 제거 인서트
   
6. 5. HF 용접기 유도 코일 및 기타 HF 용접기 예비 부품
   
7. 6. 유도코일용 구리관, 유도코일용 PTFE관
   
8. 7. 모스펫, 보드
   
9. 8. 강관 스트래핑 머신
   
10. 9. 아연 분무기, 아연 와이어, 아연 분무기

1. 왜 우리를 선택하시나요?
   

2. 1.Leading Technology, Reliable Quality, Excellent Service! 최적화된 디자인, 고품질 소재 선택!  열처리 과정 보증!

3. 2.Spiral bevel gear, drum gear coupling and carburization. 기어 이빨 담금질. 구동 시스템은 안정적이고 효율적이며 소음이 적고 내구성이 뛰어납니다.

4. 3.High precision wear resisting and Long life of toolings. 모든 기계 선반과 키 홈은 CNC로 위치가 지정되고 밀링됩니다.

5. 4.Quality department make sure the material of the raw materials quality, and ensure the machine running perfect.

애프터서비스

1. 1.Machine test running videos will supply to customer before shipment.
2. 2.Online techenical support WHOLE LIFT FREE.
   
3. 3.Professional engineers team to install the machine,  train your employee well.
   
4. 4.One year warranty and life-long technical support.
   
5. 엔지니어가 응답하기까지 5.24시간이 걸립니다.
   
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