Hard surface rod

[FredH]

Curious question for for those of You with more experience , Which is All of You

Hardfacing Deposit Methods-Oxygen-Acetylene Process | Hero Protective Alloys

After reading above article , Am I understanding that instead of using a welder and melting the hard surface rod onto the object , like welding beads , That You would use a torch and " Melt " the rod and apply it that way ??

I was thinking about this the other day . Rather than using a welder , throw a bunch of hard surfacing rod into a pot and melt it then " Dip " the object into it . In that case , talking small objects .

Not sure , but may have found a large box , 5" high x 8" or so wide in a metal air tight box . Cardboard is really faded , so is hard to read . Rods are large in diameter, at least 1/4" , if not bigger . My Brother remembers Our Dad having hard surface rod , but does not remember what happen to it .

Not that I have anything that I would use that rod on , Was just trying to learn .

Fred H.

 

[CNC Dan]

You need to bond the hard metal to the base metal. That requires melting the base metal too. But you don't need/want to get as much melting of the base metal as you would with regular welding rods. The idea is to dilute the hard surfacing metal as little as possible, to keep it's hard wearing properties.
Two layers are recommended, as the first one is mixed with the base metal but the second layer is mostly hardfacing.

 

[gwdixon]

CNC Dan has the method. I've even put a third coat on if a bit of build-up was needed.

I have found hardfacing rods require a lot of amps on the arc welder to sufficiently burn. 1/4" is going to take a fairly big welder and 200+ amp in my experience. But not knowing what you have will require experimentation to find out what works.

I have seen plow moldboards being hardfaced with an acetylene torch and it was brutally slow and very hot (the day was over 100° as well). That method seems best used for thin materials where minimal penetration is called for.

 

[stuckmotor]

Here's my safety police link on old welding rods. Welders | Mesothelioma and Asbestos Industry
Sorry, I don't like the safert police any more than anybody else.

 

[Shield Arc]

Wish I had a dollar for every pound of hard facing rod I've run.

 

[dickfoster]

In that case you'd only have a dollar which which you might be able to buy a cup of coffee in some places. Now if you have applied many pounds and you asked for a dollar for EACH pound you might have enough that will buy you a little more than a cup of coffee, even at Starbucks.

 

[Shield Arc]

I worked for years drilling tiebacks, and solider pile. The augers need hard facing all the time.
Those auger pictures were drilling 200-feet into solid rock. For a bypass outfall around the Bonneville dam on the Columbia river.

 

[D2Cat]

So is there a difference between each pound and every pound?

 

[stuckmotor]

So is there a difference between each pound and every pound?

I looked up the definition of every and tried to figure this out. Now I'm getting a headache.

 

[dickfoster]

So is there a difference between each pound and every pound?

Every is inclusive of all times, items whatever while each refers to individual occurrences, items etc. so if you have a dollar for every, that means exactly one dollar for all occurrences while if you get a dollar of each then you get a dollar for each occurrence or a whole heap a dollars.