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  1. Garrett Green

    Mazak Laser having trouble cutting 1/2" Material

    Hello, Please forgive my ignorance on this topic. A couple of us have been thrown into the fire a bit and asked to figure out how to run our laser after they let the last guy go. We currently have a 4kW OPTIPLEX NEXUS 3015 FIBER Mazak Laser. It is probably 5 or 6 years old at this point...
  2. Garrett Green

    Flat Plate Stress from Internal Pressure

    Hello, I am hoping someone on here can double check my calc. I design hydraulic cylinders and my machinists are asking for me to change a design to increase tool life. Essentially I will be taking the thickness of the endcap to 0.175" which is a little bit thinner than my tube wall which...
  3. Garrett Green

    Chamfer Callout on Through Hole in Tube

    Hello, I recently changed a part for my company and we are going to start putting a backside chamfer on a hole that is cross drilled through a tube. My dilemma is I can not figure out how to dimension this properly! I am attaching an image of the part in question and the only way I can really...
  4. Garrett Green

    Powder Coat

    Hello, I am a mechanical engineer working at a small company. We produce hydraulic cylinders and we powder coat all of our cylinders. When we powder coat it cant be fully assembled as the heat would melt the internal seals so it is just the welded tube assemblies. We use plugs to prevent any...
  5. Garrett Green

    Timing shaft Stress concentration

    I am being asked to approve something but I have no way to verify through calculations so I am hoping someone with more experience can tell me if this is a bad idea. Essentially we have a timing shaft that we through drill and use a spring pin to attach a coupling. the through hole was drilled...
  6. Garrett Green

    Hydraulic Cylinder Threaded Gland Design

    I am designing a Hydraulic Cylinder with a threaded gland. I have experience designing hydraulic cylinders but never a threaded end. I am looking over my ASME VIII Division 1 codes to try to determine the thread engagement needed but the only thing I have found is section UG-43. Table UG-43 has...
  7. Garrett Green

    Galvanic Corrosion Solutions

    I am designing Liquid Petroleum dividers and I am very worried about galvanic corrosion. The blocks will be made from Aluminum but the hose fittings will be brass. My first reaction was to anodize the aluminum but I already know I will be asked if we can avoid this to save a few bucks. I have...
  8. Garrett Green

    Shore A Hardness for sealing

    I am building a testing apparatus for hydraulic cylinder tubes. We want to test them with air immediately after welding to check for leaks in the welds. I have designed an apparatus to plug all ports and the open end of the tube but I am looking for a rubber that will seal well and hold...

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