News

induction heating coil making principle

Sep. 21, 2018

                                                         Induction heating coil making



The heating result depends on not only current of induction coil, but also the shape of the induction coil, the number of turns, leads of coil, and material & shape of heated parts. To optimize power of induction machine, the most important is to design coil according to part’s material and shape.


In general, Induction coil design should follow following principles:

1. Coil shape should be based on the shape of the heating surface of the parts. Make sure copper tube of coil and the heating surface of the workpiece in parallel and the current flow direction of adjacent turns should be consistent.

 

2. To determine turns of coil

The following situations should adopt double turns or multi-turns:

2.1 Non-magnetic materials such as copper/brass and aluminum, etc.

2.2 Parts diameter 20mm

2.3 Plane heating

2.4 heating by external magnetic field

 

3. Adjustment of distance between coil and part following principles:

3.1 for small parts distance between coil and part should be controlled in 1-3mm.

3.2 For larger parts distance between coil and part is determined by the following principles:

l  When the power rate of machine adjusted to the maximum and the current has also reached its maximum rate but heating very slowly, you should reduce the distance between coil and part or increase number of turns of the induction coil.

l  When the power rate of machine adjusted to the maximum but the current can’t reach its half rate, you should increase the distance between coil and part or reduce number of turns of the induction coil.

 

4. For heating by external magnetic field (e.g. plane heating, inside diameter heating, etc.) or heating of non-magnetic material, to use different shape of flux concentrator can greatly increase output power of machine. Then the output power can be optimized.

 

5. Make coil leads as short as possible because long coil leads will increase energy loss of machine. E.g. for SSF, coil lead length is about 200mm but HFP is about 150mm

 

6. If coil shape determined by heating method and reduce heating efficiency, consider machine with higher power.


Latest News

Customized Turnkey induction heating machine

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

Related Products

What is induction Heating?

What is induction Heating?

Induction heating is the process of heating an electrically conducting object (usually a metal) by electromagnetic induction, through heat generated in the object by eddy currents. An induction heater consists of induction power supply (induction heater) and inductor (coil) that is a shaped to contour the part, and a work station where the part is held and presented to the coil.

Copyright ©Chengdu Duolin Electric Co.,Ltd. All Rights Reserved | Sitemap | Powered by Reanod

WeChat

We use cookies

We use cookies and other tracking technologies to improve your browsing experience on our website, to show you personalized content and targeted ads, to analyze our website traffic, and to understand where our visitors are coming from.