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Igor Gradinarescu
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Induction Heat Treatment Equipment

03/30/2014 9:11 AM

Hello everyone ,
Please tell me , if you know, if there is any induction heat treatment equipment that can be used to preheat (200 degrees C) and PWHT (580 degrees C) circular welds 6000mm diameter and 100mm thick wall.What power would have such equipment? Can it penetrate the thickness?
My thanks in advance.
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lyn
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#1

Re: Induction Heat Treatment Equipment

03/30/2014 11:59 AM

Heating temperature range: -10°C-1100°C

Heating parts size range: 10-6000mm or equal

Induction Heater for Weld Heating, PWHT, Stress relieving
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Igor Gradinarescu
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#2
In reply to #1

Re: Induction Heat Treatment Equipment

03/30/2014 2:54 PM

This equipment is for pipes ; to perform PWHT for 6000mm diameter and 100 mm wall thickness by heating with electric heaters requires power 600KW. What power is needed for induction heating ?
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lyn
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#4
In reply to #2

Re: Induction Heat Treatment Equipment

03/30/2014 3:12 PM

I gave you the web site, READ IT FOR YOURSELF.

We don't play 20 questions here.
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truth is not a compromise
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#5
In reply to #2

Re: Induction Heat Treatment Equipment

03/31/2014 12:55 AM

To perform the heating, much of the energy required (or power when considering time restrictions) does not depend upon whether the heat is generated by resistance in the workpiece itself (as for induction) or resistance in a heat element in close proximity to the workpiece.

.

A kilogram of steel requires about 1/2 a kilojoule to raise the temperature 1 C. You are describing raising the temperature of several thousand kilograms of steel several hundred degrees C.

.

While that suggest a sizable minimum amount of energy to attain the required increase in temperature, arriving at the power necessary isn't as straight forward as trying to figure out the longest acceptable time over which the increase in temperature might be allowed. Because the longer it takes to heat, the larger the amount of heat that will be lost to the environment from imperfect insulation, and more importantly conducted further along the pipe itself, as well as the specifications for the heat treatment and the job, higher power heating will be advantageous and power below a certain minimum will not work.

.

Assuming insulation is similar, the likely difference in efficiency between induction and resistive heating are unlikely to be a significant factor in the minimum power needed for the job.

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Igor Gradinarescu
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#3

Re: Induction Heat Treatment Equipment

03/30/2014 3:00 PM

Delta Heat use resistance heating ;I know them . The rest are for small pipes .
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dolby
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#6

Re: Induction Heat Treatment Equipment

03/31/2014 1:16 AM



http://www.aws.org/conferences/newweldingtech/sherill.pdf
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#7
In reply to #6

Re: Induction Heat Treatment Equipment

03/31/2014 4:15 AM

Note the OP is requesting equipment for pipe with roughly a 20 foot (vice inch) diameter....

.

I wonder if the OP will divulge a little more about this project. Logistics associated with getting 20 ft diameter pipe to the site has to be interesting, unless the sections are much shorter than the width.

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Igor Gradinarescu
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#8
In reply to #7

Re: Induction Heat Treatment Equipment

03/31/2014 5:16 AM

Project is similar to these images .
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#9
In reply to #8

Re: Induction Heat Treatment Equipment

03/31/2014 5:23 AM

Rotary kiln?

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Igor Gradinarescu
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#10
In reply to #9

Re: Induction Heat Treatment Equipment

03/31/2014 5:34 AM

Yes, rotary kiln cement plant .
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PWSlack
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#11
In reply to #8

Re: Induction Heat Treatment Equipment

03/31/2014 6:53 AM

Well, the question has to be asked, "How was it done in that particular case?". Its own commissioning records will answer it.

  • One of the possibilities is to light the burner while the kiln is empty, perhaps.
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TonyS
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#12

Re: Induction Heat Treatment Equipment

03/31/2014 9:47 AM

Contact Polysius or F.L.Smidth

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sohail0110
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#13

Re: Induction Heat Treatment Equipment

03/31/2014 3:46 PM

you need a MF induction system and for your size you need 750kw igbt induction system (for complete circle coil) and if you want to save the energy the C type coil will be better for you to rotate around the pipe.

induction coil is a copper tube (which can be formed in many shapes ,as per your requirements ) and with the water circulation cooling system.

regards

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Igor Gradinarescu
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#14
In reply to #13

Re: Induction Heat Treatment Equipment

03/31/2014 3:55 PM

Can I buy this equipment from somewhere ?
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sohail0110
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#15
In reply to #14

Re: Induction Heat Treatment Equipment

03/31/2014 5:38 PM

give me your contact and i will inform you as i found the manufacturer .

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SM INDUCTION-HEATING
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#16

Re: Induction Heat Treatment Equipment

04/16/2014 12:07 AM

CR4 ADMIN: Deleted Post

Spam: This post was deleted because it contained advertising outside the Commercial Space forum. Please review Section 14 of the CR4 Site FAQ about advertising.
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SM INDUCTION-HEATING
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#17

Re: Induction Heat Treatment Equipment

04/16/2014 8:56 PM

www.cmheat.com

Delta service

6000MM is a huge pipe for PWHT

does it have to be done in-situ?
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Previous in Forum: Setting of Compression Spring when Compressed for Long Period   Next in Forum: Material Test Report Mechanical Info

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