Welding Ventilation Exhaust in Machine Shop/How to Set Up?

munruh · Oct 17, 2013

Needing to set up a small welding station in the shop. My shop is small so it will be not just too far from the machines. I will buy a welding screen to keep shield our eyes. However I need to find a way to ventilate this.
Around 10 hours a week we weld small parts that get machined. Do I need some kind of ventilation hood that I hang from the 14 ft. ceiling and then exhaust out? I have also seen these sort of arm like things that stick out and I guess suck up the fumes.

Ideas please, thanks

DDoug · Oct 17, 2013

Which welding process ?

munruh · Oct 17, 2013

digger doug said:
Which welding process ?

MIG welding

adama · Oct 17, 2013

Over here a std simple approach is a extraction cart. Long gose neck - spring balanced arm with circa 6" flex hose. Then onto a 24" square 4 micron synthetic fiber pre filter before something like a F9-F11 paper based filter. Think the better carts have the option then after that of going to hepa and charcoal post filters for chemical removal. 24" square filters are dead common in the Havac trade so pretty darn cheap + they will hold a hell of a lot of dust - fumes.

Better options are down draft tables or extraction that vents to outside.

sable · Oct 17, 2013

The down side to blowing the fumes straight outsde is that the warm air goes with it ,not good when you have spent a fortune heating it up, the self contained filtering type overcome this but I would think that there will be more maintainence and legislation involved.

Rob F. · Oct 17, 2013

munruh said:
MIG welding

Lots of possibilities here, more details please.
mig welding with flux core wire is a lot different than solid wire and shield gas which is again different than dual shield....
Rob

munruh · Oct 17, 2013

Rob F. said:
Lots of possibilities here, more details please.
mig welding with flux core wire is a lot different than solid wire and shield gas which is again different than dual shield....
Rob

solid wire and gas shield. Welder runs a couple hours a day 2-3 weeks per month. I would like something that is simple......................Hobart 250 welder, .035 wire, mild steel material

Ries · Oct 17, 2013

Here are a bunch of portables, and some stationary exhaust fans.
Portable Welding Fume Extractors
With an exhaust fan, it sucks the smoky air in and blows it outside.
Some places, this is illegal, without filters. Other places, they dont care.
You do lose heated/air conditioned air, but its the cheapest.

More expensive are electrostatic portables- they clean the air without exhausting it outside.
Like a Smog Hog- similar to the units they used to have in bars when they allowed smoking in them.
Portable Smog-Hog Mist Collector - United Air Specialists

Then you get into built in systems, which can run tens, even hundreds of thousands of dollars. Overkill, for one mig machine, but it would depend on your situation and your local laws.

TSI · Oct 22, 2013

This really depends upon the welding area..... The simplest is a hood over your welding table and a fan taking the fumes outside - like a kitchen stove fan with better hanging down sides... but if your welding only small things the size of shoe boxes, then something like that would work fine.

A decent ball bearing extractor fan 30W @220V around 250mm in diameter will pull enough air through it - if the area is fairly confined....

iap-airproducts · Sep 1, 2020

For anybody who finds this post seeking answers to fume exhaust questions, we at IAP Air Products provide products to meet your Welding, Fume, Vehicle Exhaust, Downdraft, and Dust Collection needs. We are the largest stocking fume arm supplier in the U.S. with over 2000 fume arms and other products in stock. You can visit us at https://www.iap-airproducts.com and fill out a contact form. Also, if you visit us between 8:00am-5:00pm CST you can chat with us directly on the site.

DDoug · Sep 1, 2020

iap-airproducts said:
For anybody who finds this post seeking answers to fume exhaust questions, we at IAP Air Products provide products to meet your Welding, Fume, Vehicle Exhaust, Downdraft, and Dust Collection needs. We are the largest stocking fume arm supplier in the U.S. with over 2000 fume arms and other products in stock. You can visit us at https://www.eat shit and die spammer.com and fill out a contact form. Also, if you visit us between 8:00am-5:00pm CST you can chat with shit filled spammers directly on the site.

For anyone that cares, the spammer is ruining a good companies reputation.

Did the cheque clear yet on your "Web Designer and Digital Marketing" Contract ?

Scruffy887 · Sep 3, 2020

Exhaust outside if possible. But you need to look at your welding process and see how you can position the parts for the smallest possible effective air flow using the smallest metal flex ducts. Capture close to the source and be mindful of too much suction pulling the shield gas away.

DDoug · Sep 3, 2020

Scruffy887 said:
Exhaust outside if possible. But you need to look at your welding process and see how you can position the parts for the smallest possible effective air flow using the smallest metal flex ducts. Capture close to the source and be mindful of too much suction pulling the shield gas away.

Do you even READ the prior postings sir ?.....Like #10 …. :nutter:

Cyclotronguy · Sep 11, 2020

If space is really really tight and the parts are truly small then a portable DIY bench-top downdraft table is pretty darn convenient. Plenty of good recirculating filter options that could be mated up.

The last shop I set up had one of the big snorkels exiting to the exterior, and that immediately triggered response from OSHA, the county, the air resources board, the building dept so forth. And for what it's worth the scope of our work was about 10 hours a week of GTAW on lab-ware.

Matt_Maguire · Sep 11, 2020

digger doug said:
Do you even READ the prior postings sir ?.....Like #10 ….

To be honest they guy did sign up with the company name. I checked the site & they are in the states but I can't tell if they manufacture or are a reseller...

I'd also agree with Cyclotronguy that downdraft (filtered) is likely the best option for the original (now old) inquiry.

Matt

DDoug · Sep 11, 2020

Matt_Maguire said:
To be honest they guy did sign up with the company name. I checked the site & they are in the states but I can't tell if they manufacture or are a reseller...

I'd also agree with Cyclotronguy that downdraft (filtered) is likely the best option for the original (now old) inquiry.

Matt

So what ?

Is still a spammer dredging up an old post to SPEW SPAM....

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Welding Ventilation Exhaust in Machine Shop/How to Set Up?

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