Capabilities
WELD OVERLAYS
Our specially designed automated weld overlay systems are designed to restore and protect critical industrial and processing equipment by using advanced welding technology. Hi-Tech delivers superior quality and high efficient production requirements that are demanded for critical field and shop applied weld overlay projects.
Typical applications for Automated Weld Overlays involve:
- Pressure vessels
- Boiler tube waterwalls for utility, waste-to-energy, and other industrial boilers
- Various industrial and process components, including nozzles and flange faces
- Pressure boundary repair and restoration
We specialize in rapid mobilization to assist in repairing your immediate weld overlay needs to ensure that plant downtime is minimized due to unplanned maintenance or equipment failure.
Engineers and Designers at Hi-Tech Industrial Services have developed a fleet of weld systems that are specifically designed to meet the unique demands of the field installation of high quality weld overlays. Our automated weld overlay systems can be adapted to weld nearly all areas of vertical and horizontal process vessels, with these areas including spherical and 2:1 elliptical heads; cones; transitions; and sidewalls, among others. In addition, most areas of boilers can be welded automatically, which results in production several times greater than any hand welding application. Boiler sidewalls, floors, roofs, screen tubes, and slopes may all be protected and/or restored back to full operation by a Hi-Tech weld overlay.
Our on-the-job performance will demonstrate our total commitment to satisfy your expectations and specifications on every project.
Qualifications:
· NBIC (National Board) “R” symbol stamp to perform code repairs to boilers and pressure vessels
· NBIC (National Board) “NB” symbol stamp to mark and register boilers and pressure vessels
· ASME “S” symbol stamp for Power Boilers
· ASME “U” symbol stamp for Pressure Vessels
· Qualified weld procedures and welders certified to ASME code requirements
· Qualified NDE personnel certified to written practice requirements of ASNT SNT-TC-1A guidelines
Benefits of Hi-Tech’s Automated Weld Overlay Systems:
> High Productivity - Hi-Tech Industrial Services has the ability to deposit large areas of protective overlays in minimal time frames by using our specially designed automated weld overlay systems. Multiple overlay systems can be employed to expedite completion and meet your time frame requirements.
> Low Dilution - In most situations, weld dilution adversely affects the corrosion resistance of a weld deposit, and therefore, it is imperative to minimize the amount of dilution. The Hi-Tech MIG (Gas Metal Arc Welding) overlay process results in very low dilution, with our automated vessel overlay process typically producing weld deposits with 8 to 10% dilution.
> Low Penetration - Arc penetration is maintained at a minimum with our automated weld overlay system. In most situations, the maximum base metal penetration is approximately 0.030” (<0.75 mm).
> Low Heat Input - Hi-Tech`s automated system is designed to travel our weld torch at a high rate of speed along the welding surface, which results in a reduction of heat input into the base material.
> Superior Weld Chemistry - A homogeneous weld deposit with a uniform chemical composition throughout the deposit is required to achieve proper corrosion and erosion resistance. Our automated weld system repeatedly applies a weld bead with minimum dilution and consistent composition.
> Full Fusion to Base Metal - Our automated weld systems utilize the latest technology to control parameters, minimize dilution, and reduce heat input while maintaining full weld fusion. Hi-Tech`s application of a fully fused weld deposit to a base metal results in a superior, long lasting product.
> Controlled and Consistent Welding Parameters - Hi-Tech Industrial Services has a Product Development Department that is dedicated to the advancement and support of automated welding systems. The latest technology is required to provide controlled and consistent weld parameters, and Hi-Tech Industrial Services continues to invest in the latest, proven technologies in order to maintain our commitment of advancing weld overlay technology. Weld parameters are precisely controlled during the entire project to ensure that proper chemistries, weld fusion, and quality are top priorities.
> Adaptability for All Position Welding - Hi-Tech Industrial Services have developed weld systems that are specifically designed to meet the unique demands of the field installation of high quality weld overlays. Nearly all areas of vertical and horizontal process vessels and boilers can be welded automatically with the versatile modular design of the Hi-Tech weld overlay system.
> Excellent Weld Quality - Hi-Tech Industrial Services has maintained a high level of expertise that allows us to offer the best quality and process controls that are required to achieve a quality weld overlay product that is second to none!!
