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    • Engineering Services >
      • Pressure Vessel Design
      • Vacuum Chamber Design
      • Custom Cryogenic System Design
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      • CNC Milling
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    • Welding Services >
      • ASME Code Welding
      • Aluminum Welding
      • Brazing and Soldering
      • Precision Welding Services
    • Assembly / Testing Services >
      • Helium Leak Testing
      • Pneumatic Pressure Testing
      • Hydrostatic Pressure Testing
      • Electrical Wiring / Sensor Testing
      • Cold Shock Testing
      • Precision Cleaning
      • Dye Penetrant Testing
  • Products
    • Vacuum Products >
      • Custom Vacuum Chamber >
        • Custom Aluminum Vacuum Chamber
        • Custom Stainless Steel Vacuum Chamber
        • Custom Exotic Material Vacuum Chamber
      • Custom Combination Pressure and Vacuum Chamber
    • Pressure Products >
      • Custom ASME Code Pressure Vessel
      • Non ASME Code Pressure Vessels
      • Custom ASME B31.3 Piping Systems
    • Cryogenic Products >
      • Custom Cryostats / Dewars >
        • Custom Aluminum Cryostats / Dewars
        • Custom Stainless Steel Cryostats / Dewars
      • Custom Cryogenic Distribution Boxes / Cold Boxes
      • Custom Heat Exchangers
      • Custom Cryogenic Thermal Shrouds and Shields
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      • Precision Mechanical / Electrical Assemblies
      • Custom Precision Machined Parts
      • Radio Frequency Components
    • MLI - Multi Layer Insulation
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      • Energy Industries
      • Aerospace Industry
      • Nuclear Industry
      • Coatings Industry
      • Semiconductor Industry
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      • Engineered Diamonds Industry
      • National Laboratories
      • Research Universities
      • Advanced Industrial Process Customers
      • CBD and Essential Oils
    • Customer Testimonials
  • Learning Center
    • Fabrication Tips
    • Subscribe to Our Newsletter
    • Newsletter Archive
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      • Custom Pressure Vessels
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Reducing Project Risk through Manufacturing Capabilities: Orbital Welding

Sometimes applying our Reduce Project Risk process and Step 4. Deliver, results not just in a robust manufacturing process and exceptional results for an individual project but yields new manufacturing capabilities that can be applied to meet other customer’s needs.   Recently Meyer Tool was awarded a contract involving the welding of hundreds of tube-to-tube butt welds requiring 100% x-ray to meet the acceptance requirements of the ASME B31.3 Process Piping Code.  A daunting task to meet these stringent non-destructive testing requirements; however, a task we felt we could accomplish with our existing robust manual GTAW (gas tungsten arc welding) processes and weld staff.  As the majority of these welds involve a new material (INVAR 36) we first developed our manual GTAW WPS (weld procedure specification) and qualified it per the requirements of the ASME B&PV Section IX.  We then qualified multiple welders to this new WPS. 
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​Meanwhile our engineering staff was setting up the project travelers and manufacturing sequence. During this Step 3: Develop, of our Reduce Project Risk process, the possible increase in productivity and elimination of variation in the welds using the orbital welding process was discussed. While not part of our original estimation process for the project, we decided that the investment in an orbital welding system:
  1. Could markedly improve productivity in this project.   
  2.  Provide new capabilities to customers requiring orbital weld tube fabrications   
  3. Free up more experienced welder fabricators for intricate complex work while broadening the skills and capabilities of less experienced personal.​
For the initial implementation of the Orbital Welding system and development of our capabilities we decided to initially limit ourselves to welding tube-to-tube welds with thicknesses in the range of .030” to .075” and diameters from .25” OD to 4” OD.  This allowed us to purchase a single weld head able to automatically weld using an autogenous GTAW process in a single pass.  The power supply we purchased will eventually allow us (with different weld heads) to weld pipe to 3.5 SCH40S using a wire feed GTAW process. 
​
Orbital welding is the automated welding of tube or pipe in which the weld joint is held stationary while the weld arc rotates (orbits) around the weld joint. GTAW is not the only possible process but for Meyer Tool’s purposes it is the one best suited to our customers’ needs.  The weld process itself can be autogenous (no filler metal) or utilize automatic wire feed weld heads to add filler metal.  
​
Picture
Orbital Welding System for tube-to-tube and pipe-to-pipe autogenous GTAW Welding
Picture
Weld Head of Orbital Welding System, shown with 1.375" OD tube collet
The tube-to- tube or pipe-to-pipe weld joint must be well fitted and secured within the ‘weld head’.  The weld head is the device that holds the weld joint in place, provides the oxygen free purge cavity surrounding the joint, and holds the mechanism for rotating and providing the weld arc.  Attached to the weld head is the power supply, which like a standard welder provides the electrical power to the weld head, plus it contains the programmable controller where the weld parameters are stored.  Unlike a manual welding process, the fit up and purging of the joint is constrained in repeatability by the physical dimensions of the weld head and its tube/pipe collets.  The weld process is precisely repeatable as the weld is performed to pre-developed and programmed parameters performed in an automatic process.   
 
Orbital welding is best suited to processes that require:
  1. The highest level of repeatable weld integrity for full penetration welds.
  2. Stringent cleanliness requirements.
  3. Allow tight fit up criteria, e.g., tube-to-tube but welds.
  4. Large quantities of welds of similar size and configuration. Whether on a single project or across projects. 
We have developed Weld Procedure Specifications for welding both INVAR 36 and stainless-steel tubes on our Orbital Welding system to meet the requirements of Section IX of the ASME Code. Welders have been qualified to the new weld procedures. Programs for a variety of diameters and weld thickness of weld joints have been developed and stored in the Orbital Welding system controller for use by our welders. We have developed and trained our welders on the proper preparation of the tube ends and the fit up into the weld head. We are proceeding to weld on the current project!
 We see this new tool as a long-term investment in our ability to provide our customers with the high-quality welded components they expect from Meyer Tool, using the latest in manufacturing technology.
 
Implementing our commitment to Reduce Project Risk involves not only applying our Process of Discover, Design, Develop, and Deliver to our customers' projects but also to discovering ways to improve our own internal manufacturing capabilities. Our customers from accelerator components to semiconductor demand the highest quality. Utilizing the latest in manufacturing technology to improve productivity and maintain quality is just one way we commit to achieving these goals.
 
How we apply our Reduce Project Risk Process to our own business processes to better fulfill our customer needs is an important aspect of how Meyer Tool implements continuous improvement.  Meyer Tool has more than 50 years of experience manufacturing cutting-edge components and assemblies.  Our experience spans a wide range of materials, processes, and project sizes. Whether you’re building a single prototype or need production manufacturing support for your unique components, Meyer Tool’s engineering and manufacturing team approaches each challenge using our Reduce Project Risk Process to support your needs.
 
Working on a project that requires manufacturing expertise?   
​
Give us a call at 708-425-9080 or fill out our RFQ form to get started!


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Picture
Welder Operator selects program on controller/power supply component of Orbital Welding System
Picture
Tube to formed bend butt weld fit up within Weld Head.
Picture
INVAR 36 tube weld using Orbital Welding System

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