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General => General Technical Chat => Topic started by: ftransform on March 15, 2013, 06:19:06 pm

Title: cartridge heater temperature ratings?
Post by: ftransform on March 15, 2013, 06:19:06 pm
I would like a cartridge heater which could go up to 400 degrees C. Ebay is littered with cheap cartridge heaters from hong-kong but none of them provide any kind of maximum temperature specification.

http://www.ebay.com/sch/Business-Industrial-/12576/i.html?_from=R40&_nkw=cartridge+heater&_pgn=2&_skc=50&rt=nc (http://www.ebay.com/sch/Business-Industrial-/12576/i.html?_from=R40&_nkw=cartridge+heater&_pgn=2&_skc=50&rt=nc)

Will these work?

I would like a solution that does not cost 20+ dollars a heater mainly.
Title: Re: cartridge heater temperature ratings?
Post by: vlf3 on March 15, 2013, 09:48:09 pm
What's your intended application for 400c !   :-//
Title: Re: cartridge heater temperature ratings?
Post by: ftransform on March 15, 2013, 10:08:16 pm
Quote from: vlf3 on March 15, 2013, 09:48:09 pm
What's your intended application for 400c !   :-//

Lol, I thought I could slide a bunch of those round metal can heatsinks I have lying around over one and use it as a home made hot air gun with an air compressor and an AL tube
Title: Re: cartridge heater temperature ratings?
Post by: vlf3 on March 16, 2013, 04:59:44 pm
Those cartridge heaters are not ideal for your application; in all honesty, you would be better to buy a hot-gun or a paint stripper !
Title: Re: cartridge heater temperature ratings?
Post by: Rufus on March 16, 2013, 05:40:06 pm
Quote from: ftransform on March 15, 2013, 10:08:16 pm
Lol, I thought I could slide a bunch of those round metal can heatsinks I have lying around over one and use it as a home made hot air gun with an air compressor and an AL tube

I doubt it is sensible building your own but if you insist spare parts will work a lot better and come with a thermocouple for about the same price.

www.ebay.com/itm/110V-Hot-Air-Gun-Heating-Element-Core-for-SAIKE-898D-/280547924240 (http://www.ebay.com/itm/110V-Hot-Air-Gun-Heating-Element-Core-for-SAIKE-898D-/280547924240)
Title: Re: cartridge heater temperature ratings?
Post by: ftransform on March 16, 2013, 06:29:28 pm
well regardless of my folly I still want to know what those things are rated for, just in case :-+

 I just wanted to make a modular lab compressor system (pickup tool, venturi cooling pipe (EVEN THOUGH I HAVE DUSTOFF) (http://en.wikipedia.org/wiki/Vortex_tube (http://en.wikipedia.org/wiki/Vortex_tube)) (also doubles as smoke remover), solder pickup tool, hot air gun and solder paste dispenser.

 :-+

I know I can buy all this stuff cheap but it is more for fun then anything. I already own a proper hot air gun... it's just fun to misuse things you know? Plus customization, like foot pedal solder sucker or blower control is kind of neat.
Title: Re: cartridge heater temperature ratings?
Post by: SeanB on March 17, 2013, 05:27:59 am
The ones meant for plastic extrusion are normally rated to about 350C, as most extruders will operate at around 150-300C depending on the particular machine. The leads however are often only rated to 200C, as they are going to be outside the heater blocks and this is a cheaper insulation to make in a flexible form. Somw will operate to 600C, but then you will find the leads are made from ceramic beads threaded on the wires.
Title: Re: cartridge heater temperature ratings?
Post by: chickenHeadKnob on March 17, 2013, 05:49:13 am
You do know that vortex tubes can be hellishly loud ? Ha .. what.. what .. can't hear you  :palm:
Title: Re: cartridge heater temperature ratings?
Post by: ftransform on March 17, 2013, 02:01:37 pm
Quote from: chickenHeadKnob on March 17, 2013, 05:49:13 am
You do know that vortex tubes can be hellishly loud ? Ha .. what.. what .. can't hear you  :palm:

Sounds like alot of guys here can use them for their wives then!
Title: Re: cartridge heater temperature ratings?
Post by: NiHaoMike on March 19, 2013, 03:58:08 pm
What about glow plugs?