Low temp ally welding

[Dan Forsh]

Does anyone here know anything about the low temperature aluminium welding kit? (Americans that's pronounced alum in ee um and not alooo minum

I just took delivery of a scrap TS 360 saw that I bought for parts, I honestly only bought it for the ignition module as the guy (Ebay) said "does start" and I need a module for one I have that is otherwise healthy. At the price anything else is a bonus, so I started to strip it last night fully expecting the piston and cylinder to be totally shot, but got a pleasant surprise. The piston is good and the barrel/jug/cylinder has almost no marks at all, in fact better than the one I'm canabalising it for. Only problem is the muffler mounting threads are butchered. In fairness the guy did advertise this fact. Basically both studs are sheared off but still in the head and someone has either tried to drill them out and drilled through adjacent to them, or tried to drill new holes next to them and then tried to correct his work with some kind of adhesive/crap

I'm friendly with our maintainance fitters at work and took the cylinder in today to see if they could do anything for me.

By coincidence one of them had brought in a new low temperature alloy welding kit he had bought and demonstrated. This stuff can weld aluminium at 350 Deg. C The kit contains a bar of alloy which you heat into the area to be welded, then you have to rub the area with a stainless steel rod or brush to cause a reaction and the stuff welds! At 350 C.

He showed me a test piece he'd done at it look and feels really strong. He's going to mill off the bad areas of my cylinder's mountings and weld a solid piece of ally on each side which we can drill and tap for the muffler mounting bolts.

Seems like a possible to me, but has anyone any experience of this stuff? Or tried something like this before?

Any web links where I can read up on it?

Cheers,

Dan

 

[JohnL]

http://alumaloy.net/

http://www.tinmantech.com/html/faq__alumaloy_vs__rods_and_flu.php

http://www.lynnflexo.com/id32.htm

 

[Lakeside53]

I've used it. Works fine on the older saws, in fact, really well, but doesn't work for beans on the newer magnesium alloys. I find the mag casing starts to melt/burn very close to the melting point of the alloy rod. The side cover of the TS360 is magnesium... found that out the hard way when trying to mig it..


It VERY GOOD for fixing cracked MS200T or 20T mufflers - just a propane torch, wire brush and it's done!

The one I use is HTS-2000

http://www.repairaluminium.com

Check out the video... (top right corner of the site)

 

[thompson1600]

Lakeside,

Do you just use that for the old saws, or for the new magnesium saws too (HTS-200)?

 

[jp hallman]

"Low Temp Ally Welding"...
I try to stay out of ally's when the temp gets low, much less weld in em'. Never know when some bum will need a light. I ain't got the time. Mr. Brokeback Mtn. Man.

 

[Lakeside53]

Lakeside,

Do you just use that for the old saws, or for the new magnesium saws too (HTS-2000)?

I never had any luck getting it to work with the newer Magnesium alloys.... Might be me, but I either melted the casing, caught it on fire, or didn't melt the rod. Worked on older saws though.

On ordinary aluminum stock it's really good - just like soldering, but stronger then the original stock. Never had tied it on a cylinder.