HF Start vs. DC Lift Start Tig vs. Scratch Start
If you are left “scratching” your head about the differences in the different start methods of TIG, you are not alone. Many experienced users get the facts wrong when it comes to the 3 basic ways you can start a TIG arc.
Scratch start TIG is probably the oldest method of starting an arc. It’s not a pretty process as it involves flicking near molten tungsten across the metal until an arc starts. The Scratch start method is similar to striking a match on a box. It works well, and it allows almost any DC stick welder to be turned into a TIG welder without much work. But Scratch start has some significant draw backs as the tungsten gets hot almost instantly as the arc is struck and small bits and pieces of the tungsten break off and get stuck in the weld. This can cause structural problems later. For general work though it works pretty well. Scratch start is a good way to get started TIG welding and is used throughout the world on a daily basis. It is far from falling out of use.
Lift start is probably the most misunderstood form of starting. A lot of times it is confused with scratch start. It may look similar but is far from it. It is a relatively clean process even though it involves contact with metal. The lift start involves bringing the tungsten down quickly and lightly into contact with the metal, and then a quick lift up to “draw” the arc. What happens with lift start is the OCV of the welder cuts back to a very low voltage output when the unit senses it has made continuity with the work piece. Once lifted the unit shifts to a higher output as the tungsten leaves the surface. This creates little contamination and preserves the point on the tungsten. It is still not 100% clean. The tungsten still can get contaminated. But lift start is a much better option than scratch starting, for steel and stainless. But it is not a good option for Aluminum because of the affinity aluminum and tungsten have for each other.
The most popular and best option is the use of High Frequency start that generates a high frequency arc that is capable of ionizing the air and bridging the gap between the tungsten point and the work piece. The High Frequency start is a touch-less method and creates almost contamination unless the tungsten is over sharpened or the amperage is turned too high at the start. It is an excellent choice for welding aluminum, and really is the only acceptable choice. Unless you need to weld Aluminum, you don’t have to really have High Frequency start, but it is nice to have to weld AC or DC if you have the option.
Comments
logigudi replied on Permalink
resurge What's the nice fat burner for girls? You'll want that to complement your exercise, specifically if it is simply too tough for the weight to come back off. A tight frame can do wonders on your physical and emotional health. Apparently, having a lean and in shape body offers you more self belief, other than the reality that it steers you far from diseases. If you've been dieting and exercise, but getting fitter has been a actual struggle, it's time for the excellent fats burner for women to come back to the rescue!
hamijeni replied on Permalink
Okinawa Flat Belly Tonic You are making herbal weight loss easy Quite genuinely, you need to stability 'electricity in' (meals) with 'electricity out' (interest level). 'Energy in' must encompass high fine carbohydrates which might be herbal consisting of Fruits, Vegetables, Oatmeal, Whole Grain Cereal, Whole Wheat Bread and Brown Rice.
rosstaylor505 replied on Permalink
Thanks for your post. I’ve been thinking about writing a very comparable post over the last couple of weeks, I’ll probably keep it short and sweet and link to this instead if thats cool. Thanks.
Best Nepali restaurant
namait replied on Permalink
Awesome dispatch! I am indeed getting apt to over this info, is truly neighborly my buddy. Likewise fantastic blog here among many of the costly info you acquire. Reserve up the beneficial process you are doing here. custom patches
namait replied on Permalink
Make the most of mainly premium substances - you will find him or her for: custom patches
namait replied on Permalink
I encourage you to read this text it is fun described ... custom patches
namait replied on Permalink
I came onto your blog while focusing just slightly submits. Nice strategy for next, I will be bookmarking at once seize your complete rises... custom patches
seomaster replied on Permalink
wow this saintly however ,I love your enter plus nice pics might be part personss negative love being defrent mind total poeple , custom patches
dasatana replied on Permalink
steel bite pro reviews your weight lifting separation would possibly look like this:
• Monday: Chest area, tricep muscle mass, shoulder area
• Wednesday: Hip and legs
• Friday: Arm relaxation, again muscular tissues, biceps
If you break up up your own exercise workouts just like this you can be sure you aren't exercise the exact equal muscle group more than once every week. This allows your muscle tissues to refurbish and boom for your next workouts.
namait replied on Permalink
I've proper selected to build a blog, which I hold been deficient to do for a during. Acknowledges for this inform, it's really serviceable! custom leather jackets
namait replied on Permalink
wow this saintly however ,I love your enter plus nice pics might be part personss negative love being defrent mind total poeple , mens brown leather bomber jacket
seomaster replied on Permalink
Make the most of mainly premium substances - you will find him or her for: brown leather motorcycle jacket
seomaster replied on Permalink
In this article understand the most important thing, the item will give you a keyword rich link a great useful website page: check this out
seomaster replied on Permalink
Interesting and interesting information can be found on this topic here profile worth to see it. check this out
seomaster replied on Permalink
Such sites are important because they provide a large dose of useful information ... check this out
seomaster replied on Permalink
For true fans of this thread I will address is a free online! furniture manufacturer
sanjuani replied on Permalink
synapse xt At the equal time, prescription weight reduction drugs are essentially utilized in case of obesity with possible dangers in your fitness. Their effects, facet consequences are studied and known, and if there is no other ways if you want to shed pounds naturally - probably prescription drugs are the pleasant weight loss drugs to pick.
plotyous replied on Permalink
Proven This weight reduction reading enables you accomplish three things:
Discerning the weight loss definition.
Handling the physical frame fats attack.
Realizing the gigantic impact of weight loss psychology.
Textbook Weight Loss Definition
The textbook definition of dropping Weight entails using up calories BEYOND what you generally deplete. Thousands of people hold misrepresented or misshapen ideas about what weight reduction comprises. For example, an all too commonplace weight reduction mistake that's smooth for you to make is failing to move outdoor of your consolation region.
namait replied on Permalink
I can give you the address Here you will learn how to do it correctly. Read and write something good. 먹튀사이트
namait replied on Permalink
I encourage you to read this text it is fun described ... Amber Sea Far East Organization
adilkhatri replied on Permalink
You actually make it look so easy with your performance but I find this matter to be actually something which I think I would never comprehend. It seems too complicated and extremely broad for me. I'm looking forward for your next post, I’ll try to get the hang of it! buy subutex online
adilkhatri replied on Permalink
I should state just that its magnificent! The blog is instructive and dependably create astonishing things. unarmed security guards
namait replied on Permalink
I came onto your blog while focusing just slightly submits. Nice strategy for next, I will be bookmarking at once seize your complete rises... Amber Park CDL
seomaster replied on Permalink
I might suggest solely beneficial in addition to trusted facts, and so find it: Meyer Mansion
seomaster replied on Permalink
I might suggest solely beneficial in addition to trusted facts, and so find it: Meyer Mansion
seomaster replied on Permalink
I might suggest solely beneficial in addition to trusted facts, and so find it: Meyer Mansion
seomaster replied on Permalink
I read this article. I think You put a lot of effort to create this article. I appreciate your work. Mont Botanik Residence
seomaster replied on Permalink
I invite you to the page where see how much we have in common. Sarah Rando
namait replied on Permalink
Awesome dispatch! I am indeed getting apt to over this info, is truly neighborly my buddy. Likewise fantastic blog here among many of the costly info you acquire. Reserve up the beneficial process you are doing here. 22bet
seomaster replied on Permalink
Such sites are important because they provide a large dose of useful information ... 22bet
seomaster replied on Permalink
wow this saintly however ,I love your enter plus nice pics might be part personss negative love being defrent mind total poeple , 22 bet
namait replied on Permalink
wow this saintly however ,I love your enter plus nice pics might be part personss negative love being defrent mind total poeple , zet casino
seomaster replied on Permalink
Interesting and interesting information can be found on this topic here profile worth to see it. casino portugal online
namait replied on Permalink
I've proper selected to build a blog, which I hold been deficient to do for a during. Acknowledges for this inform, it's really serviceable! 22 bet
seomaster replied on Permalink
I read this article. I think You put a lot of effort to create this article. I appreciate your work. online casino
adilkhatri replied on Permalink
Retail and office venues are often transformed into optimum marketing suites with the addition of great quality poster holders, poster displays and poster stands. Choose from a huge range of sizes; A4, A3,A2,A1 and A0. poster stands
seomaster replied on Permalink
I read this article. I think You put a lot of effort to create this article. I appreciate your work. casino online
Imran.ahmed948@... replied on Permalink
go and check for pendant light get all information about it.
wholesale pendant lights
rosstaylor50 replied on Permalink
The writer is enthusiastic about purchasing wooden furniture on the web and his exploration about best wooden furniture has brought about the arrangement of this article.
IT solutions
seomaster replied on Permalink
For true fans of this thread I will address is a free online! canadian casinos
adilkhatri replied on Permalink
Access Control Installers NY offers installation of Access Control Systems, including keypads, card , keyfob readers and Biometrics keyless entry systems for small business
namait replied on Permalink
These websites are really needed, you can learn a lot. playamo
namait replied on Permalink
These you will then see the most important thing, the application provides you a website a powerful important internet page: playamo
namait replied on Permalink
These websites are really needed, you can learn a lot. real money online casino Canada
seomaster replied on Permalink
Hi there, I discovered your blog per Google bit searching for such kinda educational advise moreover your inform beholds very remarkable for me. real money online casino canada
JacksonS54 replied on Permalink
The building envelope should completely surround the conditioned space, and the insulation needs to be in contact with the air barrier. Saskatoon closed cell spray foam
Naina_Patel910 replied on Permalink
Shreedama technologies is the Best graphic design services in surat. We have experienced designers, who offer creative design to myriad clients over the world. All services related to IT company are available here.
namait replied on Permalink
wow this saintly however ,I love your enter plus nice pics might be part personss negative love being defrent mind total poeple , norske bettingsider
seomaster replied on Permalink
These websites are really needed, you can learn a lot. check this out
seomaster replied on Permalink
For true fans of this thread I will address is a free online! nye casino
Pages