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Robert Yates

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Everything posted by Robert Yates

  1. Cactus Juice is an Awesome Product for Stabilizing wood and other materials . Here is one link to the product . http://www.turntex.com/index.php?option=com_virtuemart&Itemid=121 Sam
  2. Put a 225W 250 W heat light in the shop it works for me . Sam
  3. Take a look here one of the best done . http://www.iforgeiron.com/topic/29068-basic-knifemaking-tutorials/?hl=%2Bknapped+%2Bsteel it is the neck knife how to do knapping of Steel . Sam
  4. Where are the "long sleeves" ? in several photos you may have them on yet you rolled them up . Just an observation ! good luck with your project . Sam
  5. Hill Billy, is it a O2 sensor to a Ti exhaust ? No! silicon bronze rod is not compatible with Ti & SS. However to give you a Fighting chance to do your experiment try DC Negative and it will flow much better. Here are acceptable rods for Ti welding/TIG work . **** Note!the Rods are Very expensive start out around $275.00 price pre LB **** Name Temperature C/F Composition Solidus Liquidus Ag-5Al -- 780/1436 -- 810/1490 Ti-20Zr-20Cu-20Ni -- 842/1548 -- 848/1558 Ti-15Ni-15Cu -- 830/1526 -- 850/1562 Ag-26.7Cu-4.5Ti -- 830/1526 -- 850/1562 Ag-9Pd-9Ga -- 845/1553 -- 880/1616 Ti-15Cu-15Ni -- 902/1656 -- 932/1710 Ag-21.3Cu-24.7Pd -- 900/1652 -- 950/1742 Titanium is what I call a “heat monster” meaning it will take twice as much heat input as the same thickness of stainless. If your weld is to have 100% penetration your tack welds must have to have 100% penetration it is very difficult to be welding a 100% penetration bead and run over a tack weld that’s not 100% through and hold your 100% penetration throughout your bead. Titanium is very unforgiving in relation to this; for example, if you fail to penetrate on your first pass you cannot correct this by welding back over it like you can with steel or stainless the weld will have to be removed and redone. Use Thoriated tungsten, you can use Lanthanated but if you have a lot of titanium to weld you’ll wish you had Thoriated tungsten. These are your only two choices, you may have read in one of my posts that we had problems with Tri-mix; well titanium is the metal where we had the most problems. Always connect the ground lead to the WORK with a positive clamp (“C” type clamp) never ever use a spring clamp. This can lead to an internal burn where the ground clamp was connected and it cannot be seen visually when you’re done but yet when you put it in service that’s where the part fails not at your weld. When we do larger heat exchangers we actually weld two to four taps on the exchanger and bolt the ground lead to the part, so even if you have a burn you cut the tab off at the end of the job. Be careful when you start your weld, titanium during its transition from room temperature to its melting point of 3000deg becomes very magnetic. At room temperature it’s not, and at 3000deg it’s not, just during the transition, so keep your filler rod out of the zone until you have the puddle established. The filler rod during welding becomes very sticky because you must keep it under the shield at all times and this makes the filler rod very hot, so if you touch anything it will stick to it, and I mean stuck good. This is a big reason why you need the large cup, 1” or larger. This allows you to keep the filler rod cooler but still under the shield. Sam
  6. Can you send / Post the other side I have an Idea what it may be . Samuel Cro
  7. Bonjour le Mimosa, et est bienvenu à IForgeIron et les Collines de Tennessee! Sam Hello Mimosa, and welcome to IForgeIron & The Hills of Tennessee ! Sam
  8. I see SOOO much wrong with your Welding ! Now that said it is not the How you did in the Welding process but the "Safety" of how you did it ! No gloves ,sleeves,and NO protection from the welding its self . Sam
  9. Titanium welded to stainless: When titanium is welded with steel the intermetallic phases TiFe and TiFe2 form, which are very hard and brittle and prevent the production of technically useable welds. One way to achieve ductile welds of steel and titanium is to use intermediate layers of materials capable of being welded with both titanium and steel, without brittle phases occurring. One such material is vanadium. Titanium/vanadium/steel joints have been produced successfully by resistance spot, electron beam and diffusion welding. Titanium Properties are as follows; Titanium’s higher melting point, lower density, lower ductility, & sensitivity toward contamination during welding. You MUST Have Ultimate Cleanliness! This is to Say…. titanium should be free of air drafts, moisture, dust, grease and other contaminants, which might find their way into or onto the metal. Molten titanium weld metal must be totally protected from contamination by air. Also, hot heat-affected zones and root side of titanium welds must be shielded until temperatures drop below 800°F (427°C). titanium can be welded to zirconium, tantalum and niobium. Welding Processes Titanium and its alloys are most often welded with the gas tungsten-arc (GTA or TIG) and gas metal-arc (GMA or MIG) welding processes. Titanium welding wire is covered by AWS A5.16-70 Specification (“Titanium and Titanium-Alloy Bare Welding Rods and Electrodes”). It is generally good practice to select a filler metal matching the properties and composition of the titanium base metal grade. However, for both commercially pure grades and alloys, selecting a weld wire one strength level below the base metal is also done. Brazing is Brass ! all other forms are “Welding types” Torch brazing is not applicable to titanium. As to say any brazing techniques will Contaminate the Titanium surface. Most “All” titanium should be done with argon or helium gas shielding. Alloys for brazing titanium to itself or other metals are titanium-base (70Ti-15Cu-15Ni), silver-base (various), or aluminium-base (various). The titanium base alloy requires temperatures in the vicinity of 1700°F (927°C), whereas the silver and aluminum-base alloys require 1650°F (899°C) and 1100°-1250°F (593°-677°C) respectively. So your answer to titanium welded to stainless or to do so in a shop environment is NO ! It will contaminate to weld and it will crack just as if it were cast iron. you can not weld stainless steel to it either. To weld titanium you can set you material on stainless steel covered tables, but any tools you use such as files or brushes( always use stainless brushes) must be new and used only on the titanium. You should also use what is called a bird nest when tiging it. A bird nest is an extra purge line that you fit next to your cup as you are welding. So, as you move your tig rig while you are welding it, the birdnest will help to cool the weld as well as give it more gas shielding. I hope this helps you. If you need more info, please feel free to let me Know . Best Regards Sam
  10. Hey Mac good to hear you got some welding time in ,now you know a lil bit about it I hope you can have some fun with it . Sam
  11. Not too bad not clean it up and get back to work ;) Sam
  12. looks as it has a bushing in it ? as to weld or HTS 528 Brazing Rod it is the best rod to get . "The strongest brazing rod made for joining cast iron and steel, HTS-528 is thin flowing for close-fit joining and repairs on all cast iron, steel, copper, bronze, nickel, and brass. It also will effectively join dissimilar metals. Welders rate its wetness on ferrous and non-ferrous metals as excellent and while it is very hard, it is still fully machinable. The perfect rod to use for high-heat applications up to 1400 degrees, such as a cast iron manifold or repairing cracks in blocks, suitable for high-stress areas, including repair of bolt lugs." Sam
  13. Prayers Sent to the family Sam
  14. the photo has nothing to do with the thread . and every thing to do with Very poor welding . By the way if a simple 40 bank of batteries can run a house and all of the things in it properly this system will / would run a Small welder . Good luck with your Welding Sam
  15. Thermit , the # 1 thing in Welding is to Properly prepare the welding material to be welded (IE Beveling ,preheating, welding Cycle of machine, the material to be welded, and the correct Knowledge of how to do it ) Old Weldor's die hard I would guess the concept of welding water is something you would take in a literal term ? yet it is often used by many an old Weldor it means if it can be done it has been done ! Best Regards Sam
  16. Old Timer look here http://www.iforgeiron.com/forum/141-welders-beginers-course/
  17. Dave Check to make sure the Ground is "Grounded" properly (IE use a small grinder to clean the work table if metal then any weld spatter off the ground ) yes many a welder arks off the ground to shorten the wire instead of using a welper to cut the wire as should be . You can make sure the ground is connected to the work itself. as for the magnetic welding clamps I can only assume you are speaking about the Arrow type that is used for setting up a jig and other type of welding degrees ( 22 ,45,and 90's )these are only for tacking the work together in a few locations of the area to be welded then promptly removed to avoid damage to the tool . Also knowing what size and type (gas, flux core, or a combination of both) MIG you are using would help . also what size metal you are using as well as the settings on the machine . at best I can speculate it would be a combination of issues . improper Ground, Machine settings (set too low for proper penetration of the weld) improper position of MIG gun in relation to the work to be welded , the MIG Gun tip may be Clogged up . and the final one and most being if it is Gas unit the tank is not "Empty/almost empty" and has the correct PSI setting . Best Regards and if I can help you out any further let me Know Sam
  18. First of all Hello. second you are incorrect I can take a "little Cheapo welder" as you call it a Very simple 110v welding with .025 wire and weld up to but not limited to 3/8's work very proficiently and yes MIG is very easy with less then a few hours I have Trained many folks how to use a MIG welder to the ability they have welded up to 1/2 plates, and made pads. However , Trying to get the same person to weld with an Arc or Oxy & acetylene torch takes much more time .you can serf the net all you wish sir . there are many Videos that any one can find on how to do many things it does not make them the correct thing to do . Nothing supersedes a quality, qualified, Welding Teacher to show you the proper welding procedures so you do not form bad habits. Yes I weld One way My children will be on it ,in it or around it , some time in their life. Best Regards Sam
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