High Temperature Cable (Wire Rope)
High Temperature Cable (Wire Rope)
(OP)
Hello everyone.
I have a large utility boiler and I need to lower a large piece of steel safely to the bottom. The load that I am lowering is about 400 pounds and the furnace temperature is about 2500 - 3000 F. Does anyone have any experience or know of any type of cable out there that is used in furnaces or ovens?
I have a large utility boiler and I need to lower a large piece of steel safely to the bottom. The load that I am lowering is about 400 pounds and the furnace temperature is about 2500 - 3000 F. Does anyone have any experience or know of any type of cable out there that is used in furnaces or ovens?





RE: High Temperature Cable (Wire Rope)
http://www.welding-advisers.com/
RE: High Temperature Cable (Wire Rope)
Depending on how well your boiler is insulated, external temperatures adjacent to the boiler setting should run no hotter than 125 deg F.
RE: High Temperature Cable (Wire Rope)
RE: High Temperature Cable (Wire Rope)
As stated above nothing will last at those temperatures, much less a cable with the fine wires. I look at my information on ceramic coatings for steel but all of them crap out way below your temperature.
We have a Thermal Reduction Unit that operates in you range, but the first metal penetration of the refractory is only when the temperature gets below 2500°F and even then we use air or steam purge.
Could you put water, air or steam on lance to lower the temperature until a more opportune time?
What type boiler do you have that operates at these temperatures.
RE: High Temperature Cable (Wire Rope)
That unfortunately, increases the risk that the assembly will snag on the snatch blocks.
You might want to mock up everything but the fire outside and practice the operation a few times; I can imagine a lot of bad outcomes.
Mike Halloran
Pembroke Pines, FL, USA
RE: High Temperature Cable (Wire Rope)
RE: High Temperature Cable (Wire Rope)
RE: High Temperature Cable (Wire Rope)
I'd determine how far you need to lower it and make sure the tug driver slows way down just before it reaches bottom.
If you leave it there you run the risk that it may drop at some point.
RE: High Temperature Cable (Wire Rope)
I have to ask who is the poor fool that will be working above this furance with all that heat flying out the top? What kind of suit will this person be wearing?
You could not pay me enough to even try this...
Tofflemire
RE: High Temperature Cable (Wire Rope)
RE: High Temperature Cable (Wire Rope)
What will be 2500 F if this furnace is off line? Why do you need a cable to handle this temperature if the furance is ambient? If there is something that is still 2500F? Then the heat is going up a you if open the top access port.
Tofflemire
RE: High Temperature Cable (Wire Rope)
IE: It costs lots and lots of money to cool something to ambient, so usually things are worked on hot. (I dont know anything about this application however.)
Are steel ladles in mills still re-lined when cherry red? Ive seen films that my grandfather had where the machines would be used to bust out the old lining and then guys in the silver suits would put the new lining in.
(Hot metal is soooo cool!)
RE: High Temperature Cable (Wire Rope)
RE: High Temperature Cable (Wire Rope)
This weekend we have decided to drop load a bit to get the furnace temperature down around 2200F and atempt to lower it with a 1/2" Stainless Steel cable.
RE: High Temperature Cable (Wire Rope)
RE: High Temperature Cable (Wire Rope)
Thanks for answering my question. Like Metalguy, I say Good Luck and I hope you have been practicing your lasso throwing.
Tofflemire
RE: High Temperature Cable (Wire Rope)
I was wondering how you made out this weekend with your furnace fix?
Tofflemire
RE: High Temperature Cable (Wire Rope)
Thanks everyone for your words of wisdom!
RE: High Temperature Cable (Wire Rope)
Where was the OSHA/insurance inspector or Safety officer?
Did they say when they approved the procedure?
RE: High Temperature Cable (Wire Rope)
It's just you.
If you are going to throw out words like "Negligent", please explain your self.
RE: High Temperature Cable (Wire Rope)
Sounds like they were "lucky" the cable let go when it did.
[If an uncontrolled event woulda "taken us off," how about lowering the temperature a bit for a controlled maintenance activity?]
How about chains/fixtures made of molybdenum?
RE: High Temperature Cable (Wire Rope)
Sounds to me like you didn't understand his situation. Have you ever worked around a big boiler? BTW, Mo has little oxidation resistance. Had time/money been no problem a big fat platinum chain would have survived all the way down.
Jamesjm,
Approx. how long did it take from the time the SS cable was exposed to the heat until it failed?
RE: High Temperature Cable (Wire Rope)
It took about 90 seconds for the SS cable to fail. Thanks for your help in this!
RE: High Temperature Cable (Wire Rope)