Coil and Transformer
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Coil and Transformer

Coil and Transformer

Coil Making Principles

Induction heating coil is the made by copper tube,put the heat parts inside to heat up by magnetic field.Depending on the dimension of heating job,shaped by the water-cooler copper tube for induction heating process,due to water flows inside the copper pipe,the condutor will not be heated.

 

The induction heating effect of the workpiece not only depends on the power of the induction heating machine, but also with the shape of the induction coil, the number of turns, the length of the copper tube, the workpiece material.

 

Shape and other factors are directly related to the equipment to get the most efficient use of power. Depending on the heating material and shape, design suitable heating coil is very important

 

The design of the induction loop should generally follow the following making principles:

 

1. First determine the heating purpose, quenching, forging or hot forming and welding  or heat treatment. 

2. According to process requirements to determine the basic shape of the coil: round, rectangular, square,pan incense, irregular. 

In General, round, square workpiece, the heating coil should be round or rectangular-based. 

The welding process of the copper tube inductor according to the workpiece part of the shape of the design, the coil should be welded to the two kinds of workpiece at the same time heating.

 

3. Copper Used

 

In general, SSF-60-160 induction heating machine should be selected as ≥φ8mm copper tube or the corresponding area of the rectangular tube. 

SSF ~ 50 should be selected ≥ φ5 copper tube or the corresponding area of the rectangular tube. 

HFP ~ 20 should be selected ≥ φ3 copper tube or corresponding Area of the tube. 

MFP series of induction heating equipment should be based on the work of equipment to determine the specific material.

 

4. The gap between the coil and the workpiece

 

Usually the heat transfer process should be based on the workpiece size, coil diameter and workpiece spacing should be controlled at 4 ~ 20mm; size bigger, the gap bigger.

 

Usually the quenching process should be based on the quenching depth of the workpiece, the coil diameter and workpiece spacing should be controlled in the 1.5 ~ 10mm; deeper depth,gap bigger.

 

5. The Inductance of the Coil

In general, the inductance of the company's ultrasonic equipment sensor should be controlled in the following range (the following data are data with no load)

 

SSF-30 ~ 50 equipment:

 0.7 ~ 1μH (transformer secondary single turn situation), primary total inductance (180-256μH);

SSF-60 equipment:

 0.8 ~ 1μH (transformer secondary single turn situation) primary total inductance (135-169μH);

SSF-80 equipment

0.8 ~ 1μH (transformer secondary single turn situation) primary total inductance (115-144μH);

SSF-120 equipment

0.8 ~ 1μH (transformer secondary single turn situation) primary total inductance (80-100μH);

SSF-160 equipment

 3.5 ~ 4μH (secondary secondary transformer case) primary total inductance (88-100μH);

HFP-20 equipment:

0.5 ~ 0.8μH (transformer secondary single turn situation), primary total inductance (200-320μH);

 

The secondary resonant device and the adjustable ratio machine can be used to determine the inductance parameter according to the configuration of the device.

 

6, The Use of Magnetic

 

Usually the quenching sensor can be added to the magnet, the material is copper, stainless steel and other magnetic metal can be added when the magnet can be added.

 

SSF, HFP, HGP and other high-frequency equipment should be selected ferrite material magnet. MFP equipment should be selected silicon steel sheet as a magnetic.

 

Above information support by Duolin,welcome to send us your heating purpose,we will make free coil and test for your heating requirements.

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Contact Us

+86 28 8393 0607

+86 158 8242 2821

112th Hancheng Road Xindu Industrial Zone Chengdu China

Why Duolin

DUOLIN has been founded in 1994, now is a professional factory to develop, design and manufacture Induction Heating Equipment. We are cencentrating on the improve of IGBT Induction Heating Technology for 30years, has installed thousands of Induction Heating Process for hot forging, induction hardening, long bar/threaded rod heat-treatment and induction pipe bending, Induction elbow...

Rich Experience

Rich Experience

More than 30 years of experience in induction heating industry

Free Test

Free Test

Free test for choosing the machine model before purchase

Design and Development

Design and Development

Product design research develop and maintain by the Duolin Engineer team, machine lifetime service

Quality Control

Quality Control

Test the machine as customer heating requirements and aging more than 6 hours to guarantee the good quality

Installation Guide

Installation Guide

Offer installation manual and troubleshooting guide

Brand Raw Materials

Brand Raw Materials

Use famous brand components Infineon Omron Schneider to ensure quality of material

China supplies induction heating power supply Questions and Answers:

What is your nature of your company: Dealer or factory?

DUOLIN is an old brand for induction heating equipment in China. We have own factory,bought the land and built the factory, not rent. 79 employees, it is large-scale company in chinese induction heating machine factory.

How about the delivery time and stock?

We have machine in stock for HFP-20 and SSF model, need about one week for coil making, test the machine and package.

For medium frequency big power machine, it is the customized model, production time is around 1 month.

Which port for export?

We can send machine to any port in China, but normally Shenzhen, Shanghai, Ningbo, Guangzhou, we will arrange things under customer instruction. 

How to install your machine?

Offer customer pictures, videos and document for installation. Engineer are available if customer need help to install in the factory.

What is your advantage?

International trade since 2009, manufacture induction heating machine since 1996, much experience in induction heating. All the products are research, design and develop by the Duolin engineer team, electric engineer, mechanical engineer, coil design engineer, application engineer..

Which countries your products are exported to?

More than 56 countries installed more than 3000 set machine, agent in 10 countries.

Customized Turnkey induction heating machine

Customized Turnkey induction heating machine

Provide solution according to your requirement, well match with your production line

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