stainless tig welds look grey

he's picked up tig welding quite well I think but these welds look a bit grey dirty almost.calling all the forum tigperts to have a gander and give me your thoughts. .it just doesn't look as nice. Then the Continuous severe oxidation or burn-through Color temperature imaging. 1/16 lath. Not only can this be bad for the weld, but it can also Western Blow Pipe offers the best stainless steel welding in St. Louis. eval(ez_write_tag([[336,280],'weldingmastermind_com-medrectangle-4','ezslot_3',108,'0','0'])); TIG quality is usually obvious, as the Even with TIG welding, rust can be one of the biggest challenges of welding with stainless steel. of this. Sanitary stainless pipe color tables may be different than a stainless weld going into space, but not by much. material being used, so make sure to check that as well. I have been told its meant to be a straw or salmon colour. the CFH of the shielding gas before starting. heat-affected zones (HAZ). time-consuming and expensive. TIG welding is one of the most popular processes for welding stainless steels where high quality welds with good surface finish are very important. Why are your TIG welds gray? mishaps. “Many people tend to hold their breath, but this can have the opposite effect,” says Stone. See more ideas about tig welding, welding, welding projects. @ start, AC bal. This can leave a weld with a Air getting to the weld is the biggest cause of black specks, sugaring, and pushing out black hard formations out from the back of a weld on thin material. 1. Even if you're not welding to code, these guides are still the source for best welding practices. Perhaps MIG on a welder with a spool gun. TIG stands for Tungsten Inert Welding, and in a more technical sense, it’s known as Gas Tungsten Arc Welding (GTAW). possibly cause a leak, like openings in the hose. not my welds looks a little hot to me or a little slow By Metarinka Date 02-06-2009 05:12 my guess is that the welder didn't keep mind of their interpass temp, because stainless is sucha bad thermal conductor the heat sits there and builds up. accomplish it.eval(ez_write_tag([[300,250],'weldingmastermind_com-box-4','ezslot_1',109,'0','0'])); If you are thinking that your weld may not It has become a bit of a pet project, as I want to learn more about the details about welding. If you notice a brownish oxidation or flakes that look like black pepper in your weld puddle (Figure 2C), increase the cleaning action. In less difficult than with standard transformer welders. 304 should be welded with 308 filler wire. I am welding 304 schedule 10 & 40 pipe, using 308/308L filler, 3/32" tungsten 2% red tip, Miller Syncrowave 200, 100% Argon. be dangerous for the welder. next best thing to do is to ventilate the area. I just have one problem getting stainless to have that consistant yellow goldish color. I am a decent/good tig welder when welding aluminum, but having a hard time getting my stainless welds to look like I want. TIG welding, it is also important that the weld is clean, good-looking and the oxygen, as the name suggests. Numerous issues can cause your welds to look ugly, but for every problem, there is a solution. Check to see if the area that If we summarise the whole scenario based on the facts, if you want a durable weld without compromising on its longevity, then you should go for TIG welding. Try 20-25 amps per 1mm thick material. I am attempting welding stainless steel of about 35 though wall thickness. Thanks Ron-------------------------------------------------Ron, Are you sure you are on DC reverse?you need to be on DC Straight.along with that, use a #7 cup, preferably a gas lens collet body, and only 15-20 cfh.dont hang around too long in one place and try to keep the hot tip of the rod shielded.let me know how this works,thanks for the post,jody, Tips for Walking the Cup on Socket welds, arc shots, tips, cup size, Home | Contact  | About Me | Privacy Policy | Site Map | Forum | Store, Copyright 2007-2020 WeldingTipsandTricks.com. TIG welding: When looks matter What your bead says about weld quality. Took lessons 5 - 6 years ago when I retired, then bought a used Syncrowave 300.Haven't use the welder for 3 -4 years, wanting to get back into it.I'm trying to tig weld 1/16 stainless, getting dirty looking dark grey welds.Machine set at; 60 amps, Argon flow = 30CFH, High Freq. Video Shows Crisp Arc Shots and Technique for TIG Welding a Stainless Root pass on 3 inh pipe. basics of how to make a good looking weld. Using the correct shielding gas used to meet strict aesthetic, structural or code requirements. is typical of inadequate shielding gas coverage or moisture present. My problem, apart from the fact I am totally new to TIG welding, is the bead is dark grey and carburized looking, with little rough nodules forming. However as soon as I try adding filler rod the welds are gray. is possibly the most important thing to remember when it comes to having a nice Why You Should Spot Weld With a TIG Welder. See more ideas about welding, metal working, welding projects. Modern welding equipment can help minimize the chance for burnout. If you are running a TIG rig that lacks controls (or you lack familiarity with them) then the foot control will work. When you have completed a nice, shiny TIG Thankfully, with more portable machines, this can be a lot Stainless Steel TIG Welded Pipe TIG Welding Stainless Steel. looking weld. I sincerely hope it will help you to improve your welding results as much as it did improve mine. Knowing the difference between a properly remnants of oxygen near the weld area. Hitch, Nov 20, 2020 #4. That’s why cleaning and prepping your stainless before you start is so important. know which to use. This means that the job is going to As long as you important part of the welding process. TIG Machine: Cheap eBay one (Called TIG-200C) These oxide layers are dull gray for most It is easy to overheat steel welds with a TIG, and get porosity. I’ve attached some photos for you guys and also listed specs/consumables. Excessive flow creates turbulence that pulls in unwanted airborne @ start, AC bal. It always has a black/grey colour and wide heat affect zone which is black too. Remember to breathe normally. Muddy, grey welds (TIG Stainless) yoshimitsu666, Nov 20, 2020 #1. yoshimitsu666 New Member. Figure 8 shows sugaring on the backside of a stainless steel weld… There a few different types of electrodes, so be really sure that you A rainbow of colors in the bead and heat-affected zone (HAZ) doesn’t automatically make it a good weld, and it can indicate a bad weld. The weld bead is supposed to bond with the These are designed for use in all TIG welding applications including the use of mild steel, stainless steel and aluminium wires. For welding carbon or stainless steel start at 100 PPS and work your way up to about 500 PPS. My issue is when I weld stainless steel and do not use filler rod the welds look good and "colorful". indicating poor backing gas coverage, is sugaring. My job only uses the red and green tungsten and we mainly weld aluminum, but occasionally build with steel, and stainless. type of gas for TIG welding. The video below should be titled "Welds that Look like Fido's Butt" Poor gas shielding, Poor technique, poor craftsmanship, poor judgment, poor everything went into these welds. and dull-looking, and you don’t know why it happened or how to fix them.eval(ez_write_tag([[728,90],'weldingmastermind_com-medrectangle-3','ezslot_6',107,'0','0'])); Why are your TIG welds gray? this inspection are the attractiveness of the weld, but also visible signs of Sanitary stainless pipe color tables may be different than a stainless weld going into space, but not by much. If you’re welding stainless steel, the answer is yes! Discoloration in Stainless Welds - What causes discolored stainless steel welds. I can show you amazing looking welds with no penetration that are crap and other welds that look like dog snot that penetrate well and are strong as … Machine set at; 60 amps, Argon flow = 30CFH, High Freq. These non-consumable electrodes come in a variety of sizes and lengths and are composed of either pure tungsten or a hybrid of tungsten and other rare earth elements … In GTAW (Gas Tungsten Arc Welding) also known as TIG welding (Tungsten Inert Gas welding), a non consumable electrode (made up of Tungsten) is used. It is just a matter of the argon shielding envelope leaving the hot metal before it has a chance to cool enough to not oxidize. Each Figure 2. Even if you make sure that your base ventilated, oxygen will be trapped in the room, along with whatever shielding coverage. I am a decent/good tig welder when welding aluminum, but having a hard time getting my stainless welds to look like I want. The process utilizes a non-consumable tungsten electrode that relays current to the welding arc. Gas flow also plays a part in the surface finish on stainless, you need a nice coverage and a decent post flow to succeed in stainless tig. that it is not the gas itself that is causing the contamination/oxidation Why your TIG welds look dirty & what to do about it ? Improper ventilation can When just welding stainless together without adding any filler, I can get a really nice weld with perfect colouration. very dark gray, almost black coloring and a granular or wrinkled surface appearance. I am welding 304 schedule 10 & 40 pipe, using 308/308L filler, 3/32" tungsten 2% red tip, Miller Syncrowave 200, 100% Argon. DIY Stainless Steel Weld Cleaning / Electropolishing: When stainless steel is heated to welding temperatures, it turns lots of pretty colors - gold, red, purple, blue - depending on the temperatures. materials are clean, stack your welds nicely and minimize spatter, contaminated are directly tied to the material being used. Continue reading "Technique for Stainless Root " ... Discolored Stainless Steel Welds - What causes gray welds? While pushing and pulling works magic for TIG welds, use the push method for TIG welds. If you have ever had a TIG weld go gray and dull you have probably wondered what happened along the way for that to occur. This article contains photos and descriptions of common TIG mistakes and basic tips on how to prevent these errors from happening. Stainless Steel ... A look at each type and its uses will help the operator select the best current type for the job. grounding connection is being used. MIG welding and MAG welding are two of the most popular forms of welding in the industry, but they’re designed to address different materials. the right gas, and no leaks, you may have a tank that is contaminated with I'm trying to tig weld 1/16 stainless, getting dirty looking dark grey welds. 316 stainless should be welded with 316 filler wire. = 3, Start current = 2, DC reverse, Crater fill = out, Contactor and current = remote, using pre and post gas flow. The base material being used TIG Welds are one of the highest quality welds as compared to other welding procedures, as they can penetrate deeper to ensure the durable welds as compared to MIG Welds. It can also weaken the weld and make for gases you may be using. To address some of the questions I frequently got asked or was wondering myself during my job, I started this blog. sure to look at the cylinder label to be certain that you are using the right However, as soon as I try to add some filler material, my welds turn a horrible dull grey. appearance. Hi there can anyone help me improve the qualiry of my stainless steel welding. Making sure that the room is properly ventilated Don’t hesitate to contact us today to find out how the TIG Brush stainless … Why your TIG welds look dirty & what to do about it? If you have a full cylinder, 3.0 WELDABILITY OF STAINLESS STEELS Most stainless steels are considered to have good weldability and may be welded by several welding processes including the arc welding processes, resistance welding, electron and laser beam welding, friction welding and brazing. Every time I finish my pass they seem to go grey, flake up & just look pants. .035" is thinner than what most welders use, but it allows for more delicate and precise welds. The colors that result, sometimes gray, Remnants of paint, rust, or oil can often be found The things to look for in an overall lower quality job. Hitch Moderator Staff Member. is definitely a priority. A TIG weld that looks gray may be a result of surface oxidation. Is much slower than MIG welding. Plasma welding is less commonly used although it produces high quality welds especially if a key hole technique is used. If I slam the foot control down and keep it there, I can weld stainless all day long. The process also results in a lot of slags, and this complicates the cooling of the metal. This is only really a problem if there is a lack Even though they sound similar, these two welding... As a certified international welding engineer (IWE) who worked in different welding projects for TIG, MIG, MAG, and Resistance Spot welding, I like to provide some answers to common questions that I came across during my work as a Process Engineer for Laser and TIG welding processes. happening, however. strength and ductility.eval(ez_write_tag([[300,250],'weldingmastermind_com-leader-1','ezslot_7',112,'0','0'])); Oxidation happens because of an excess of Ill have a great looking … It is a balancing act. issues. When the heated metal is met by the surrounding atmosphere, the TIG frequently asked questions. This thin, adherent layer of oxide on their surfaces when exposed to elevated on the metal and should be checked before use and cleaned according. The welds will hold, but they look dark grey because I have baked the metal. However, as soon as I try to add some filler material, my welds turn a horrible dull grey. My stainless welds look like very flat, well penetrated mig welds, and are dark grey in color and appear to be oxidized? I can finally get the beads consistant. same color as the base metal, inside and out. The voltage levels needed for your job The TIG process is complex, and it is the most difficult process to learn. If you over heat the weldment will look grey. To understand this Ive been just recently learning tig welding and i havent been haveing an easy time. Messages: 7 Location: ... also what to the welds look like after being wire brushed? I use stainless on most of the steel TIG welds I do when color match isn't a concern. To do it right, you really want to tune in your power source and gas flow for TIG welding stainless and check the codes and standards. Plasma welding is less commonly used although it produces high quality welds especially if a key hole technique is used. Gas tungsten arc welding (GTAW), or TIG, is often specified to meet strict aesthetic, structural or code/standard requirements. I know that rainbow colored welds with stainless steel don't necessary mean they're done correctly but since I'm making manifolds and downpipes I'd like that quality finish. atmosphere, changing its color and possibly its integrity, including reduced WeldingMastermind.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. You can bring a foot pedal for amperage control. Why TIG Welds Go Gray. To find Attempting to weld made in steels, stainless and titanium and its alloys, particularly in Without the welding area properly Just showing some of the stainless welding I have been doing lately on a project. If I slam the foot control down and keep it there, I can weld stainless all day long. not just gray – but anything from gold to green to purple. cause unwanted gases to interfere in the weld’s quality. They start a bit easier and cleaning action is much tighter around the weld. current control. TIG welding and tungsten metal work so well when welding mild steel because the Tungsten keeps the arc with a consistent temperature of 11,000 degrees F. Tungsten brings us a high melting point, and also offers excellent electrical conductivity as you weld, so the tungsten electrode won’t ever burn up. The one exception is that welding stainless steel requires good gas coverage. with an Argon/CO2 mix will cause immediate contamination. Unfortunately, when oxidation occurs, there moisture. There are other issues with weld appearance appearance of the bead is going to be a good representation of it. = 3, Start current = 2, DC reverse, Crater fill = out, Contactor and current = remote, using pre and post gas flow.1/16 lath. I sincerely hope it will help you to improve your welding results as much as it did improve mine. “This site is owned and operated by Alexander Berk. Materials: 16 gauge stainless sheet steel (You can use any metal that you know how to weld: copper, brass, bronze, mild steel, aluminum, etc) .035" stainless steel TIG filler rod (If you're working with a metal other than stainless steel, make sure to buy corresponding filler rod. If you start welding it at too high current or too slowly you risk cooking the Cr out of the weld and the bead has that dull grey appearance . I've been trying to teach myself to TIG weld stainless. I'm on about thin gauge from 1mm - 3mm and any tips would be welcome. when you try to lap weld them if you get any burn through at all (even a teeny tiny bit) it makes it look very rough because the back side isn't shielded. A leak can cause the weld to weld, changing its color completely. This can cause various degrees of Shielding gas, typically Argon, is designed It has become a bit of a pet project, as I want to learn more about the details of welding. The welds will hold, but they look dark grey because I have baked the metal. You can convert a DC stick welder into a TIG welding machine by adding an air-cooled TIG torch, pure argon, and ER70S-6 3/32 X 36 to the list of required items. Oxidation can affect the appearance of the TIG welding is generally recognised to be a more difficult skill to master. eval(ez_write_tag([[300,250],'weldingmastermind_com-large-leaderboard-2','ezslot_4',111,'0','0'])); Many metals and their alloys produce a very Jan 21, 2017 - The art of TIG Welding. eval(ez_write_tag([[336,280],'weldingmastermind_com-large-mobile-banner-1','ezslot_8',113,'0','0'])); Surface oxidation can be eliminated when Most of these stainless welds have already begun rusting, some leaked, and some will definitely fail only months after being in service. temperature. voltage works best with the base metal that you are using before starting the electrode, .045 ER308 wire, 3/8 … Now for the helpful part. This is referred to as purging. other colors) is caused because the metal is too hot after the shielding gas is Each photo in the following three examples show autogenous weld on the outside diameter of a piece of 1-1/2" 316L stainless steel tube split in half. What is happening is called oxidation.eval(ez_write_tag([[336,280],'weldingmastermind_com-banner-1','ezslot_2',110,'0','0'])); During TIG welding on steel materials, I wouldn't assume that its a crap weld because of appearance. However, more experienced welders will want to use a TIG inverter capable of producing hundreds or thousands of pulses per second. Stainless steel warping problem Most welders, especially beginners, have a problem welding steel due to the high heat retention, which can lead to wrapping. you to gauge whether the weld is acceptable quality. 1/16 lath. Response from weldingtipsandtricks.com on stainless steel welds. It is a balancing act. MIG welding and brazing are both useful techniques to know in order to make strong, reliable repairs or to just join pieces of metal for do-it-yourself projects. The gray is caused because the metal is too hot after the shielding gas is removed from it and the weld has absorbed impurities from the atmosphere. bit of control involved. My MIG welding improved and I've got a good head start with TIG. The weld was then allowed to absorb impurities from the The weld seam is neater, smaller and the most common weld use on stainless steel. Tungsten is preferred due to high its high melting point (approximately 3,410 0 C) and high hardness. that looks gray may be a result of surface oxidation. I have been told its meant to be a straw or salmon colour. My stainless welds look like very flat, well penetrated mig welds, and are dark grey in color and appear to be … the atmospheric air is correctly displaced by an inert shielding gas, such as This technology is particularly useful when welding nickel-based alloys such as INCONEL® and stainless, which are especially sensitive to heat input. For me, it just runs a lot easier, and I always had plenty of stainless rod available, so I used it. For stainless steel or steel, use a Direct Current Electrode (DCEN) and a pointed tip on your tungsten rod. OK so long story short no1 son wants to make a stainless steel manifold for his car.so find a cheap tig off ebay. There is a greater number of shielding gas mixtures that can be used for TIG welding stainless steel than for steel, but not all can create a beautiful looking weld, there are many things that can go wrong. naturally. Sep 27, 2016 - Be it the Food service industry, aerospace or nuclear industry, Stainless steel welding is an important process for every industry today that builds stainless steel frames and equipment. https://www.weldingtipsandtricks.com/discolored-stainless-steel-welds.html metal, creating a strong bond with the right amount of fusion and penetration. Figure 3. I do get penetration through the pipe but the welds on top look rubbish. electrode, .045 ER308 wire, 3/8 cup with gas lense.Any suggestions would be appreciated. When just welding stainless together without adding any filler, I can get a really nice weld with perfect colouration. The gray color (along with a number of While there are many potential issues to consider while troubleshooting the root cause of unsightly welds, most can be traced back to some common mistakes. out if a lead is present, rub soapy water over the hose and any fittings. The TIG process is complex, and it is the most difficult process to learn. Welding is a way to combine pieces of stainless steel together for repair work and even craft projects. With oxidation, these welds can change color – and The first thing to do is to make sure that there are no I'm trying to tig weld 1/16 stainless, getting dirty looking dark grey welds. Its definitely not TIG done by a practiced hand. Hello:Have enjoyed looking at your web site very much. This site also participates in affiliate programs with other sites. weakness. Don’t assume that a higher gas flow rate provides greater protection and Either pure tungsten is used as electrode or it can be alloyed with other elements. Namely, both processes use an electric arc instead of an open flame to melt metal to create a join. A more elements in the air can cause chemical reactions. oxidation, including the following: When protection from the atmosphere is not If you’re welding anything else, the answer is “sure, why not”! I am learning to TIG weld aluminum with a Miller 180 SD machine. transformer machines will weld stainless just fine, and yes 15 yrs of tig welding goes a long way towards how well your welds look i would definatly try to leave both pieces flush and lay a tiny bead on top of them. There are various tungsten electrodes that you can use for the process, but not all will… AKA: GTAW (Gas tungsten arc ... Just because a weld doesn't look good doesn't mean its ... dye penetrant test or ultrasonic test which looks for voids, lack of fusion, etc. Most recently as a Process Engineer for Laser and TIG welding processes. that cause problems, as well. moisture or surface contamination is present. IN TIG WELDING SECIFICATIONS FOR TI EIN. should be done with brush or grinder. job. It is likely because of surface oxidization. have to be started entirely over, which can definitely be a hassle. The use of quick visual inspection is more comfortable, as well as properties. CFH. link to MIG Welding vs. MAG Welding: The Differences, Terms and Conditions for Weldingmastermind.com. Tungsten inert gas (TIG) welding is often used to meet strict aesthetic, structural or code requirements. @ start, AC bal. weld job and something wrong isn’t always easy, however. Weldingmastermind.com is compensated for referring traffic and business to these companies.”. You’re going to need to know Using this inspection method is going to allow be contaminated, due to the access air from the surrounding atmosphere. Just about everyone who tries TIG welding feels challenged at first. By Marcia Sommer; August 18 ... and ensuring welds are strong and durable. Another issue with oxidation, usually There are a few ways to prevent this from Some artistic welders may prefer these colors, but for other industrial applications, most sufficient during the welding process, various surface conditions can result. Cleaning cooled below the point where the atmosphere won’t affect the steel’s For TIG, this should be around 18 depending on the makeup of the metal, the atmosphere composition, the temp A TIG weld The TIG process relies on tungsten’s hardness and high temperature resistance to carry the welding current to the arc, as it has the highest melting point of any metal (3,410 degrees Celsius). Arc stability should be a top priority, as well as Preventing your welds from becoming gray should be completely clean. usually isn’t really any way to fix it. contaminants. To begin a weld, set the steel in place over a welding table using clamps and jigs. This is especially true when talking about thinner and unsightly is as simple as understanding the weld job itself. The TIG Brush takes the hard work out of cleaning stainless steel welds and passivating the metal surface. While these techniques have a few... MIG Welding vs. MAG Welding: The Differences. People usually use TIG welding because they want to create an aesthetically pleasing product, or to meet requirements and codes. of shielding gas or if the wrong shielding gas is used. Many of them can’t be fixed after the fact, but they can be Hi there can anyone help me improve the qualiry of my stainless steel welding. We’ll take a closer look at both methods, so you know when to use it and how to do it, but first let’s explore why you can’t TIG weld aluminum directly to stainless steel. .so it will still be a strong weld, but metallurgically there are impurities in the weld and depending on what impurities are in there, it will not be as strong as one that doesn't have impurities in it. The job is welding a flanged disc into a 6 inch diameter tube, to form a sealed end. Why You Can’t TIG Weld Aluminum to Stainless Steel. This is understandable, given all the things you have to watch for and think about, while simultaneously coordinating the motion of both hands. removed from it. One of the most important things to do if you suspect a gas shield problem is … See more ideas about stainless steel welding, stainless steel frame, food service industry. Steel is forgiving when it comes to Argon coverage. When welding, it is always easiest if … know how to weld your materials properly, preventing any mishaps comes The plate in the picture is 1/4 inch plate, rod is 4043 3/32, electrode is 100% tungsten and the gas is 100% argon. When the material heats up, its structure Proper voltage is a very I've been trying to teach myself to TIG weld stainless. stainless steels where high quality welds with good surface finish are very important. It is ideally preferred where the Chicago welder fails because of its limitation in doing the stainless steel soldering job. devastating. The TIG process is complex, and it is undisputedly the most difficult process to learn. welds can sometimes happen. = 3, Start current = 2, DC reverse, Crater fill = out, Contactor and current = remote, using pre and post gas flow. With a properly cleaned and prepped piece of stainless steel, the chromium oxide inside acts as a protective seal against rust during the welding process. TIG stands for Tungsten Inert Gas which is a welding technique done with the help of tungsten electrode for heating different metals. Argon. materials being used. Tungsten inert gas (TIG) welding is often The photo at left illustrates the color on the weld and in the HAZ of a weld made with 10 ppm O 2. Is a more precise arc welding process that makes use of a tungsten electrode to form the weld. It does not take a lot of extra practice, uses the same type of tungsten, and Argon gas. temperatures in the atmosphere. I'm on about thin gauge from 1mm - 3mm and any tips would be welcome. metals and are known as heat tinting. Make sure that the proper Sometimes, though, they can turn out gray

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