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May 01 2007 For steels keep the tungsten pointed and grind it parallel with the length. While ER70S-2 filler metal is a common choice for steel another popular option for welding sheet metal is silicon bronze. It is softer and finishes well while reducing the heat required to weld it.
Jan 18 2016 Normally we would use about an 80 grit or even a 60 grit to smooth these out. I would not try to use a hard grinding disc to smooth the print throughs as it takes a lot of know how to do this even on a flat surface without under cutting the metal and then with shiny paint the under cut shows badly.
May 17 2015 To give you an example we typically want our tabletops to be flat within.005 per foot.
The top is pretty much structurally strong once they are welded on just one side but we weld 3 sides shut so that the surface will be smooth once we grind out our weld. Tip Welding thin-gauge square tube along the edges can lead to gaps and holes in your base material. If this occurs its a breeze to fix.
After all welds are made it is time to get out the ol grinder and smooth out those pretty welds you just made on the outside edges to ensure a good fitment of the sheetmetal. Speaking about grinders I used an old Milwaukee 9 inch grinder for years and loved it but it finally gave up the ghost and left me searching for a new one.
reasonably smooth and suitable for welding. 6. by cutting and grinding followed by visually inspecting the pipe surface for defects. Care should be taken not to grind. silver or light gold color of the weld bead. After breaking the arc keep the torch over the weld bead long enough to. welding. 3 3.
Jul 26 2007 Ive had to do overlay welds inside nozzels and entre manways.Once I had to use 309 first then after weldinggrinding smooth and wire brushing i had to go over it again with 308. I thought it was silly but its what the engineer wanted. Most jobs just call for overlay of 309 on steel vessels.I use to be able to weld 30 to 40 of 18 rods in a.
Aug 09 2011 The uneven weld profile is ground smooth contour. Remove weld discolouration with abrasive stainless steel wire wool pickling paste or local swabbing with a pickling solution. Wash the tank with a strong detergent solution to remove grease swarf dust paints oil etc. The application of heat to the tank will expedite this process.
KwikWeld is a great alternative to original J-B Weld when you need a quick-setting epoxy. It sets in 4 minutes and cures in 4-6 hours while J-B Weld sets in 4-6 hours and cures in 15-24 hours. Because it is faster setting KwikWeld has about two-thirds the strength of J-B Weld however they are both strong enough for most projects and repairs.
If youre new to the forum welcome to WeldTalk. Please post a message here to tell us a little about yourself and your interest in welding. A place for general welding-related discussions that dont fit neatly in the categories below. Talk about Stick welding equipment and filler metals a.k.a. welding rod.
Feb 04 2018 Also if a tip enters the molten weld pool it should be immediately replaced. For most casual welders a good rule of thumb to assure high-quality welding is to change the tip after consuming 100 pounds of wire. 11. Read Your Bead.
Sep 14 2004 09-16-2004 1033 PM. I daily weld 1 12 x 1 12 x.125 angle at work. These become the top and bottom chords for steel roofing joists. We grind the weld smooth so the steel can be rounded into a curved roof joists. I leave a gap equal to 12 of the thickness of the metal being joined.
Sep 01 2007 Tweet. 8. 09-03-2007 0732 AM. 36 gritt paper on an angle grinder run through some wax every now and then to keep the papr from loading up. You can use a regular hard wheel with wax also. Sait makes an aluminum hard wheel that works well for removing lots of material quikly. Trailblazer 302g. coolmate4. hf-251d-1.
Mar 19 2019 Grinding wheels should be the choice for carbon steel. They will remove the weld seam quickly and since the appearance of scratches are not such an issue compared to stainless steel are ideal for this operation. Typically in the spectrum of 5 to 35 degrees to the horizontal depending on the grinding wheel used should be the target.
Nov 19 2013 A huge list of welding terms Active Fluxes Active fluxes produce changes in weld metal chemistry when welding is changed.Active fluxes are restricted to single or minimal multi-pass welding. Acceptable Weld A weld that meets the applicable requirements Actual Throat The shortest distance between the weld root and the face of a fillet weld.
Mar 02 2018 The pattern on the flight surface where the weld is missing shows the moderate distortion of the weld groove by the welding heat. But it is very smooth indicating the weld was simply laid on the flight with little or no bond. The images in the center and right show a lesser but still catastrophicdegree of weld failure.
HOW TO SMOOTHEN METAL AFTER GRINDING. As I stated earlier you use finer equipment to further bring shine and smoothness to the weld and the entire piece.Some of the most common equipment used is the sanding disc or low grit flap disc.
Repairing Fiberglass This Instructable comes from a recent project I have been working on that involves fixing up an old fiberglass travel trailer.
2 x 2 x 6.125 mild steel 2 pcs 2 x.25 x 2.125 mild steel 3 pcs 8mm x 3mm neodymium magnets 8 pcs 14-20 x 1 long socket head cap screws 9 pcs And here are the drawings VISE BRAKE Download. Well there you have it. 13 machining projects for students and beginners.
May 04 2020 will weld T nuts with the tabs snapped off into the body bolt holes the are hidden by the plates. I like to cut the ends in a concave radius. doesnt give stress a straight line to work on. if I but-weld frame sections in a project I like to weld the inside grind it smooth weld on 2.
Sep 23 2019 The best time to fix a weld is before it cools. A good weld looks relatively smooth and consistent. Add more of the welding rod or smooth out the melted plastic with your gun as needed. Set your welding gun aside when youre done. Remember to put it in a safe spot such as in a heat-resistant holster until it cools.