Author Topic: Junk yard project ,media blasting , pressure pot  (Read 5411 times)

Rob.Wilson

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Junk yard project ,media blasting , pressure pot
« on: May 05, 2013, 11:44:41 AM »
Afternoon Lads

Woke up yesterday with an itch I needed to blast  and now that my welding shop is sort of usable I thought I would do a bit fab work and make a pressure pot for blasting , there is no way I would pay close too 200 quid for one , mine will cost me about 2 quid and thats for electricity ,cos I cant make that LOL

Mine will be made from free junk parts , scrounged and given , John donated the tank from an old compressor  :thumbup:



Cleaned up the tank , cut off all brackets.



Cut down a 3" BSP lump of SS pipe for the filler and threaded up a short length of 1/2 pipe .


Cut a hole in one end of the tank for the filler .



and welded the filler neck in ,using dissimilar welding rods .

 

Then made up a trolley from an old sack barra and welded that to the tank , with all the welding to the tank done I gave it a hydraulic test .

Full of water .



Hand pump



Tested to 220 PSI , I will be running the tank at about 90 PSI



All being well it was given  a bit of a paint job




Still needs another coat of paint ,then I can get the pipe work fitted .

Rob




 

Offline John Rudd

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Re: Junk yard project ,media blasting , pressure pot
« Reply #1 on: May 05, 2013, 11:49:21 AM »
Nice job Rob,  :clap: :bow:

but yer welding looks like pigeon ****.....(not!!!)

What blast media you going to use?

I use garnet ( free from work) or chilled cast iron ( again from work) or ally oxide...

Ideally a tungsten tip is best, I found the ceramic ones dont last... :scratch:
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Rob.Wilson

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Re: Junk yard project ,media blasting , pressure pot
« Reply #2 on: May 05, 2013, 11:54:28 AM »
 :lol: :lol: Thanks John

Garnet ,,,,,,,,,cos I can get it free  :med:

Thinking about making my own nozzles and gun , as I can seam to fine any local .


Rob 

Offline John Rudd

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Re: Junk yard project ,media blasting , pressure pot
« Reply #3 on: May 06, 2013, 05:23:04 AM »
Rob,

Where is the blast media exiting the tank? :scratch:
I dont see a tee at the bottom...

Are you going to use a water trap/filter on the inlet?

What size compressor you going use? (let me guess, you got a second hand 90cfm diesel compressor from work for free... :lol: )

Waiting to see what creations you come up with for a gun/nozzles
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Rob.Wilson

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Re: Junk yard project ,media blasting , pressure pot
« Reply #4 on: May 06, 2013, 08:35:13 AM »
Hi John

From the bottom mate were I had the high  pressure hydraulic line fitted for testing the tank .

I have a water trap fitted to my shop air pipe work , but I am still thinking of fitting one to the pot when I fined one , thought I had found one the other day ,

Pile of junk ,,,,,,,,,,,,cant resist ,,,,,,,,FREE STUFF



wanders over  :ddb:




Nice water trap/reg and oilier
 

Shame its 1/4 BSP no good for this project ,but  it will do nicely for a power draw bar on the CNC mill ,also got a bunch of other useful tackle from the pile  :med:


 I have a 15 Cfm compressor works fine with my siphon blast cab , ist not like i am blasting for hours at a time ,I do have a spare 15 pump and motor unit I could add to the system if necessary  .


Rob

Online NeoTech

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Re: Junk yard project ,media blasting , pressure pot
« Reply #5 on: May 06, 2013, 08:48:45 AM »
One mans crap pile another mans treasure.. that didnt come out right did it...  :scratch:
Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/

Rob.Wilson

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Re: Junk yard project ,media blasting , pressure pot
« Reply #6 on: May 06, 2013, 08:53:56 AM »
One mans crap pile another mans treasure.. that didnt come out right did it...  :scratch:

 :lol: :lol: :lol: close enough  :lol: :lol: :lol:

Rob

Offline krv3000

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Re: Junk yard project ,media blasting , pressure pot
« Reply #7 on: May 06, 2013, 11:02:36 AM »
i can not resist having a rumige  well dun rob  :thumbup:

Rob.Wilson

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Re: Junk yard project ,media blasting , pressure pot
« Reply #8 on: May 06, 2013, 01:37:13 PM »
Cheers Bob  :beer:

Well got the pluming done today and not much else well apart from inspecting and building sand castles  :lol:





The tee is plugged were the blasting hose will go as I was testing the pipe work  for leaks . Jobs a goodin suppose I better think about making a gun . Think I will make a bigger better blasting cabinet too  :dremel:

Rob


Offline doubleboost

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Re: Junk yard project ,media blasting , pressure pot
« Reply #9 on: May 06, 2013, 02:30:40 PM »
Great looking job Mate
Is that the floor of your welding shop I can see  :lol: :lol: :lol: :lol: :lol: :lol: :lol:
John

Offline dsquire

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Re: Junk yard project ,media blasting , pressure pot
« Reply #10 on: May 06, 2013, 03:08:28 PM »
Rob

Looks like a crackin good job mate. You should pop that gague off and give it to Bob. I bet he could make it look like new in short order. Thanks for sharing it with us.  :D :D

Cheers  :beer:

Don

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Offline DaveH

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Re: Junk yard project ,media blasting , pressure pot
« Reply #11 on: May 06, 2013, 03:08:36 PM »
Very nice  :clap: :thumbup:
 :beer:
DaveH
(Ex Leicester, Thurmaston, Ashby De La Zouch.)

Offline krv3000

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Re: Junk yard project ,media blasting , pressure pot
« Reply #12 on: May 06, 2013, 03:47:05 PM »
that wood look beter in blue well dun do you need a flow meter for a mig welder

Offline micktoon

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Re: Junk yard project ,media blasting , pressure pot
« Reply #13 on: May 06, 2013, 04:20:59 PM »
Hi Rob , that looks double smart lad  :thumbup: :bow: :clap: , you got that project done super quick too. It also looks like it wont take much space up , always a bonus !

 Cheers Mick.

Offline Mayhem

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Re: Junk yard project ,media blasting , pressure pot
« Reply #14 on: May 08, 2013, 09:28:38 AM »
I've go to stop looking at your projects Rob, as they give me ideas and feelings of indiquicy  :bow:

Top job and looking forward to seeing this progress (unlike the cupola and the CNC refit but I won't mention those  :poke:).

What is the reason for welding the filler to the neck with dissimilar rods?

Offline John Rudd

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Re: Junk yard project ,media blasting , pressure pot
« Reply #15 on: May 08, 2013, 11:50:17 AM »
Here's my set up....

A few piccies of my pot, compressor, I've just finished doing some coz the valve has hole worn by the media and you can see the nozzle has a slot cut up its side.....
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Rob.Wilson

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Re: Junk yard project ,media blasting , pressure pot
« Reply #16 on: May 17, 2013, 03:37:40 PM »
Thanks for the comments  Lads  :beer: and  apologies  for the slow reply ,,,,,,,,,,,,,,,,LIFE GETS IN THE WAY SOMETIMES  :Doh:


Top job and looking forward to seeing this progress (unlike the cupola and the CNC refit but I won't mention those  :poke:).

What is the reason for welding the filler to the neck with dissimilar rods?

LOL  thanks Mayhem ,,,,,,,,,,,,, I used dissimilar rods as the tank is carbon steel and the filler neck is stainless steel  :zap:


Hi John ,, I like the look of your blasting gun , I am shure I could knock one of those up to morrow , I got a couple of sample 25kg bags of media today , may give the setup a try out tomorrow

Thanks Rob




Offline krv3000

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Re: Junk yard project ,media blasting , pressure pot
« Reply #17 on: May 17, 2013, 04:15:09 PM »
hi rob don't no if this is any good but i have been geting bags of sand from work its not bilding sand its sand that they put in the oven at work for drying the pant i have being puting it on me drive to fill in the gaps and im gowing to see wat tis like with a bit of cement mixt in to it it seem to have a uiniform grane sise you can cum and pic sum up if you wont

Rob.Wilson

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Re: Junk yard project ,media blasting , pressure pot
« Reply #18 on: May 17, 2013, 04:24:40 PM »
Hi Bob ,thanks for the offer but,

If ist silica sand  then its not safe for sand blasting , just so the lads  should be aware Silica sands , beach , building sands are not safe for blasting , when blasting they break up and release free silica partials , which when inhaled will cause a horrible lung disease called Silicosis .RIP.


Rob   

Offline John Rudd

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Re: Junk yard project ,media blasting , pressure pot
« Reply #19 on: May 17, 2013, 04:41:08 PM »
Hi Bob ,thanks for the offer but,

If it's silica sand  then its not safe for sand blasting , just so the lads  should be aware Silica sands , beach , building sands are not safe for blasting , when blasting they break up and release free silica particles , which when inhaled will cause a horrible lung disease called Silicosis .RIP.


Rob

Err its also illegal to use sand for blasting if the Council get to know about it...

I have it on good authority,You could be prosecuted...
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Offline krv3000

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Re: Junk yard project ,media blasting , pressure pot
« Reply #20 on: May 17, 2013, 04:51:07 PM »
i don't think its silica sand i will av a reed on the bags thay have at work its rathe expensiv stuff its over 10 a bag its bin kleend and washt then oven dryed  well you no me if its bin thrown out i will av it if i have a yous for it

Rob.Wilson

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Re: Junk yard project ,media blasting , pressure pot
« Reply #21 on: May 17, 2013, 04:58:08 PM »
Never new it was illegal John ,,,,,,,,,,,,shame they dont make smoking illegal

Bob ,,,,,,,,,, sounds like the sand may be just the job for core making  :thumbup:, save is a bag mate  :poke:


Rob

Offline krv3000

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Re: Junk yard project ,media blasting , pressure pot
« Reply #22 on: May 17, 2013, 05:50:45 PM »
will do