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I Forge Iron

clinton

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Posts posted by clinton

  1. Ya I saw the bellows too, I watch the show every week, well when they actually have new episodes at least. It is amazing how they pay no attention to blacksmith tools and such. I remember an episode where the guy showed them the blacksmith shop and they just passed by it. (Good for us) nobody tell them about this now.
    I am going to do some picking myself today, another estate sale. You never know what you will find buried in a shed or garage. Scored an 84 lb Arm& Hammer anvil last year $40.00.

  2. The light bulb will work, I have seen old refrigerators with a light bulb used for rod ovens. It was not to code for rod storage but it was better than nothing. What kind of rod are you using? The ones that need to be dry are the Low Hydrogen rods (7018) and AWS D1.1 (structural welding code) does have requirements for storing and drying low hydrogen rods.
    Depending on how wet an environment you are in may be a factor in how well it works. If you can find a little toaster oven at a yard sale you can bake them in there to dry them out, 450 for 2 hrs should get them dry

  3. Well beveling like that gives you a partial penetration weld- better than a fillet but not as good as a full pen weld.
    4-3. WELD JOINT DESIGN AND PREPARATION


    a. Purpose. Weld joints are designed to transfer the stresses between the members of the joint and throughout the weldment. Forces and loads are introduced at different points and are transmitted to different areas throughout the weldment. The type of loading and service of the weldment have a great bearing on the joint design required.

    b. Categories. All weld joints can be classified into two basic categories: full penetration joints and partial penetration joints.


    (1) A full penetration joint has weld metal throughout the entire cross section of the weld joint.

    (2) A partial penetration joint has an unfused area and the weld does not completely penetrate the joint. The rating of the joint is based on the percentage of weld metal depth to the total joint; i. e., a 50 percent partial penetration joint would have weld metal halfway through the joint.


    NOTE


    When joints are subjected to dynamic loading, reversing loads, and impact leads, the weld joint must be very efficient. This is more important if the weldment is sub jetted to cold-temperature service. Such services require full-penetration welds. Designs that increase stresses by the use of partial-penetration joints are not acceptable for this type of service.

    c. Strength. The strength of weld joints depends not only on the size of the weld, but also on the strength of the weld metal.


    (1) Mild and low alloy steels are generally stronger than the materials being joined.

    (2) When welding high-alloy or heat-treated materials, special precautions must be taken to ensure the welding heat does not cancel the heat treatment of the base metal, causing it to revert to its lower strength adjacent to the weld.


    d.
    Design
    . The weld joint must be designed so that its cross-sectional area is the minimum possible. The cross-sectional area is a measurement of the amount or weight of weld metal that must be used to make the joint. Joints may be prepared by shearing, thermal cutting, or machining.


    (1)
    Carbon and low alloy joint design and preparation
    . These weld joints are prepared either by flame cutting or mechanically by machining or grinding, depending on the joint details. Before welding, the joint surfaces must be cleared of all foreign materials such as paint, dirt, scale, or must. Suitable solvents or light grinding can be used for cleaning. The joint surface should not be nicked or gouged since nicks and gouges may interfere with the welding operation.

    post-10376-0-50768300-1335102822_thumb.j See attachment here correct fit up for full pen weld
  4. I would have gone with full pen welds where the horizontal beam meets the vertical frame. 70 tons is a lot of force to rip stuff apart. Fillet welds are strong, but a full penetration weld is the design I see being used in critical joints.
    Why the top push? it seem like your work will be really low.

  5. If it is undercut that is caused by lack of fill, amperage can be a factor, but if you are welding in the flat or horizontal position you should be able to run hot. Like samcro said you are pulling the rod out too fast. Look at the puddle while welding, set up a test piece like a "T joint" do a fillet weld on both sides for practice. You can do multi pass welds, you can actually see undercut happening there will be a dark line along side the puddle. Learn to watch the puddle, when its full move forward, use motion a weave or whipping is good with 6011. It takes lots of practice to get real good at stick welding

  6. HW- is right on with his advise here. I would choose 6011 over 6013. The duty cycle of your machine will depend on the diameter of rod and type of rod. 7018 needs more amperage to run properly, so you may want to choose a smaller dia. rod 3/32 inch would be good. With that welder 1/8 inch 6011 rod should be fine. You can easily check the recommended settings for any electrode by going to the manufacturers web site. I like the Lincoln Electric site it has good info on all their products, it is easy to navigate and find what you need. It is not likely that you will ever reach the duty cycle on the welder as you will be letting it rest when you have to replace the rod. The duty cycle is based on continuous welding, so unless you have a 4 foot welding rod the machine will be resting and cooling down every time you stop welding.
    As far as cleaning a welder it is good practice to blow them out with air, I always do this when I buy a used welder. Remove the sheet metal and blow it out with compressed air. Try not to spin the fan with the air, hold it when blowing air in that area. Depending on how much airborne matter there is in your shop, clean on a needed schedule. Once a year should be fine.

  7. I guess that I am blessed with the yard that I go to, they have large rounds at around $ .30 / pound and I can trade them or sell my stuff to them. The price is less than new stock that is selling around $.50/ lb now. I would find a yard that you can deal with like this. An 8 inch round 30 inches long = 427 lbs x .30= $128. If you are going to build something you will need to spend some money along the way. On the other hand if you want to cobble something together I would use rail road track on end, weld a couple of them together and you are up and running

  8. Those look great, you must have paid close attention to what they taught. Did you make your own tooling? The last hammer on the right looks huge; how big is that one?
    We have our spring conference coming up in a couple of weeks I will see if I can find someone to strike for me over there and see how much of that info I have retained.

  9. That anvil looks very familiar to me I think it may have been a ebay listing, maybe not the same anvil but it had the face plate missing just like this one. I would pass unless it goes for no more than .50/ LB.
    It would be a lot of welding to repair that and you would have more in material than it is worth. If it is wrought iron there is value in that, cut the horn off and keep it then find someone that needs large pieces of wrought iron

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