Hello Eric
I really wouldn't worry too much about not knowing about welding and pipe fitting, your interviewer knows you are going for an apprenticeship and will be looking more towards you as a person that what you know, just be polite and answer the questions as honestly as you can, if you...
It is tough and i know exactly what you are having trouble with, i started a college course last september and did the open v butt test first, luckily for me i have been welding for 18 years so the open v butt was easy to me but one of the other guys still can't get it right even now, i have set...
10 times out of 10 i would tig weld exhausts up due the exact problems you are having, the only remedy i can suggest to you is to stitch weld them on a higher setting so as not to burn through, are you using stainless mig wire and purging the pipe too? if not then you could be getting the...
Yes i have three machines from R-tech and i'm happy with them all, a 200 amp tig/stick, a 160 amp mig and the plasma 30c, all work really well and the 2yr rtb warranty was a good deal breaker too, i have also bought many consumables from them and delivery is always spot on though sometimes a...
Glad it helped Martin
You're right about the low hydrogen 7018's sticking on low settings for root, this was one of my issue's, trying to balance the sticking and the keyholing was a pain so i just found using the 6013's more controllable though i will say i am a huge fan of using the 7018's...
No problem Martin :)
with regards to the pipe welding, i don't do much pipe welding myself but i have prepared pipes for other welders in the past and to be honest i find they don't usually ask for a 90 degree prep, they prefer to have a more shallow angle of 70 degree's or less, sometimes...
Hello Martin
There are two ways to stop the keyhole getting too big and you're spot on with one of them, reducing the angle is one way so the arc force is pushing back into the puddle as opposed to down throught the joint but i prefer the other method of pushing the tip of the rod back into the...
Latest pics are a vast improvement over the original ones, it's definaltely a time thing with welding, some of the lads at college are on their second year and still producing welds like yours so just think how good you will be in a year if you have improved this much in a few weeks.
Personally i would prefer a combined bevel of 70 degrees when doing butt welds of anything over 3mm, the root face i would go with is 1.5mm with a 2.5mm gap though if it's to be done on a length of over 4" then i would taper the gap to 3.5mm where the weld finishes to allow for contraction of...
You wouldn't believe the HSE existed at our workplace, not sure how my boss gets away with it but the level of safety is shocking, the amount of trip hazards, unsafe machines, faulty electrics and general lack of safety is bad, you would think the HSE would visit workplaces as a matter course...
I took the plunge and went with one supplier for all my machines and haven't been let down by any of them yet, it's R-tech welding and they have a good "guides" section in pdf format you could print out and take with you.
Two books i found useful were,farm and workshop welding and the performance welding handbook, both good in their way but you'll struggle to find and all in one book that is comprehensive, i found it better to gather information myself from various websites, that and learning by mistakes, this...
Clamping it down to a similar size piece is a good idea, it acts as a heat sink drawing the heat down and out of the parent metal, the ideal material for this would be copper but the cost of a 10 or 12mm thick piece of copper would be astronomical, alluminium would be my second choice as a heat...
I have been using this R-tech 160 amp machine for a few month now and i can highly recomend it
http://www.r-techwelding.co.uk/Mig_Welder/240V_Mig_Welders/Mig_Welder_R-Tech_INV160
Its plenty big enough for any car work as i regularly use mine to do multi pass runs on 8, 10 and even 12mm...
I would start at the bottom in terms of courses too, in fact i did, i have been making steam locomotive boilers for a company for over 18 years and now but due to said company shutting down i'm facing unemployment.
Even though i have been welding for 18 years i knew little about the science...
Cheers guys thats great info, i'll put the blue plug on for now with the trailing socket and wire it into a fused connection unit rather than a 3 pin plug to make blown fuse changes easier, as brightspark says i'll probably upgrade the wiring to 6mm to be on the safe side too.
I'm unlikely to...
Hi guys
Made a little cock up with buying my new tig welder last week, i thought going for the 200amp welder would be a better bet than the 160 due to the much better duty cycle(and the fact it came with a free foot pedal) but only after i got it did i realize that the 200 unit requires a 22...
Cheers for that Dave, i did take the cover off and the machines internals do look quite rusty but all the connections are tight, the only problem i found was that one of the two black wires in the tig torch had come off so i reconnected that but no change so far, i'm thinking of just leaving it...
Hi guys i'm wondering if anyone with knowledge of a cebora pocket pulse 100 scratch start tig machine can help me, i just bought it off ebay as a starter tig machine but i can't seem to create an arc with it, i'm at college at the moment and there i'm using £2500 lincoln machines which as you...