Learn the importance a welding helmet in this free video clip lesson. Expert: Malcolm MacDonald Bio: Malcolm MacDonald graduated from Connestoga College in 1968 taking the Fitter Welding Program. Filmmaker: Melissa Schenk
5.31.2011
5.29.2011
5.27.2011
5.23.2011
How to Choose a Good Welding Helmet
Operating a welder, regardless of if it's gas or else arc welding, generates light which may be unsafe in the eyes. Just seconds of contact with arc illumination can hurt your vision very seriously, and looking at the gas torch flame may cause like injury. Because of this protecting eye wear is definitely a essential when welding.
The number one question to look for while buying a welding helmet is which kind of lens is correct used for you. Typical, or passive welding helmets are as familiar in the present day as they had been 50 years previously. Though at the moment made from molded plastics as an alternative to thick leather-based, these helmets make available critical safety with budget costs.
The viewing lens is often a special piece of dim colored glass, quite often with a number 10 shade along with ultraviolet (UV) also infrared (IR) coatings. At what time the welder is ready to start on welding, quick nod or snap with the neck flips the helmet down sooner than striking an arc. When finished, the welder reaches to turn the helmet up then back to view the work part and to reposition for the following weld.
Though reasonably priced, ordinary helmets produce a number of disadvantages. It is usually tough to keep the torch inside the right point to start welding following lowering the helmet in place, especially for newcomers. While welding inside restricted spaces, similar to below automobiles or else trailers, there isn't an adequate amount of room to flip a helmet up then down. The never ending job of flipping up then down leads to neckline uneasiness after a day of welding. Plus, as a final point, lifting and lowering your helmet is inefficient especially while doing a whole lot of tack welding.
Auto-darkening welding helmets fix each and every one of those problems. As an alternative to a regular part of tinted glass, helmets with auto-darkening filters contain electronic filter lens and sometimes are pre-loaded with adaptable features to make welding painless.
The auto-darkening filter lens is a particular liquid crystal display (LCD) that is comparable in design to equipment used to display numbers for a digital alarm clock. For the most part filter cartridges are driven by a combination of battery along with solar power. A number of illumination sensors are installed near the lens to notice the welding arc. While the lens isn't activated, an auto-darkening LCD filter commonly has a three or 4 shade, which is comparatively easy to view via, just like sun shades.
This makes arc starts better because the you are capable of seeing the spot of his MIG gun, TIG torch or else weld electrode relative to the material he's welding. Once an arc is initiated, sensors in the helmet darken the lens to a shade number 9 to 13, depending on the options, countless times more rapidly than you could blink an eye. Since the filtration system has UV in addition to IR coatings applied to it, eyes are protected from damaging rays regardless of active/inactive shade setting. Best of all, the helmet stays downward before, during then after your responsibilities is being finished. Auto-darkening welding helmets permit you to definitely setup a welding seam with the hood in position. No more head snaps to lower the helmet. No more poor welds since the torch moved.
5.19.2011
Tig Welding Inverter 2t and 4t settings part 3 - Everlast Powertig 250EX
www.weldingtipsandtricks.com What are the 2t and 4t settings and when do you use them? what is upslope and downslope? start amps and end amps? and preflow and postlow. When using an inverter tig machine with a torch switch and no foot pedal amperage control. Foot pedals offer lots more amperage control but they are a pain if you are working on a ladder. Here is how the 2t and 4t switch positions work on an Everlast Powertig 250ex tig welder.
5.15.2011
Hobart Handler 140 MIG Welder - Best For Its Price
Hobart 140 MIG & Flux Cored Welder is by far one of the best and most flexible units for the money. It is so easy to use you can let your 9 year old weld - it is that easy.
The tool is extremely versatile, capable of welding 24 Gauge up to 1/4-Inch in different materials like mild or stainless steel, flux cored and aluminum and works on 115-volt standard household current so there's no need for a 230-Volt hookup. It comes ready to weld with or without shielding gas, no additional kit required. With an amperage output range of 25 - 140, it easily handles a broad selection of solid mild steel or stainless, flux cored and aluminum wires.
The size of the Handler 140 makes it mobile and easily transportable. It runs both flux core and MIG processes and it does an amazing job of both for being just a 120v unit. Adjustable tension on the wire feeder is a definitely a plus. Gas gauge is top-notch. As mentioned unit welds steel with or without argon, but with the tank the welds come out cleaner and quicker. It is also much harder to make a mistake with the argon.
It features stable arc with improved performance on thin gauge material. Proven, built-in wire feeder, with quick-release tension lever, which provides positive feed with adjustable tension. It is also easy access for threading wire. Replaceable, built-in contactor which eases use and is excellent safety feature which makes wire electrically "cold" when not welding - safety always first. Four output voltage settings provide a broader operating window for each wire with quick and easy adjustment for different materials and thicknesses.
Purge gas line and set flow rate without wasting wire - Hobart 140 MIG Welder has separate "purge" setting. Convenient polarity changeover with tip holder - makes it quick and easy to change polarity for solid or tubular wire plus includes convenient storage holes for spare tips. Sloped control panel makes controls quickly visible and accessible. Dual groove drive rolls make it easy to switch between.023/.025 in. (0.6 mm) and.030 -.035 in. (0.8 - 0.9 mm) wire.
When it comes to safety, without already mentioned facts Handler 140 has primary circuit breaker, which watches current overloads, self-resetting thermal overload to protect power transformer and self-resetting motor protection which protects wire feed system from overloading - no fuses to change or buttons to press.
As all Hobart tools, this MIG welder comes with five-year warranty on transformers, stabilizers and generators; three years on electronics (drive motors, rectifiers); and one year on guns (MIG and plasma torches).
In short - very impressive piece of equipment! Don't waste your money on more expensive "upper level" units because this Miller-made Hobart has everything they've got at a much better price.
5.11.2011
MIG Welders - Smart Buying Tips
Buying a MIG welder doesn't need to be a complicated task. However, in order to make certain that you get the best one for your particular situation, there are a number of things you should check into before you buy.
First, make sure you have a clear idea of what your goal is - what things are you expecting to weld? How often do you need to use it? What sort of environment will it operate in?
Secondly, are there any particular brands of welder that you are hoping to use? What about MIG welder brands you are hoping to avoid? Everyone has different experiences with various makes and models, so it's important to get that sorted out right away.
Finally, you need to look at the features of the MIG welders you are considering.
What sort of heat settings, output amperage, and wire feed rate do you require? How thick will be the material you'll be welding? Ensure that the welder you acquire is capable of handling it.
Is there anything peculiar about input voltage or amperage? Open circuit voltage?
What about the cooling mechanism and circuit breaker protection? Do these pose any sort of concern for you?
Lastly, something as basic as the dimensions of the MIG welder should be taken into consideration. Will it physically fit into the area you expect to use it? What about for storage?
Once you have done your homework on which models match your requirements, you are then in a position to do some Internet searching to find the best deal for your MIG welder.
You may want to check out some of the industry standard websites such as:
Miller Welders at millerwelds.com
Lincoln welders at lincolnelectric.com
Hobart Welders at hobartwelders.com
These are several of the thousands of options you will have online when you begin shopping for your next welder in earnest.
Always remember that your level of satisfaction with your welder comes back to how well you have researched your purchase ahead of time.
Before you make your next welder purchase, download our free MIG Welder Checklist to help you decide on the perfect welder for your needs.
Visit http://www.powerfulchecklists.com/tools/mig_welders_checklist.shtml to download your checklist.
5.06.2011
Auto-Darkening Metalman Solar Welding Helmet with Grind Mode
This Metalman solar-powered high-impact nylon helmet is ideal for welding and grinding operations. For more information on the Metalman welding helmet featured in this video, visit Northern Tool + Equipment: www.northerntool.com
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