Untitled Document

Cold Gas Dynamic Spray

A new technology of metal spray that utilizes “No Flame” and repairs like nothing before. The kinetic energy of particle impingement is the secret to this new process success. It looks and machines like wrought material.

Cold Spray technology provides a great coating:

  • Low temperature application
  • High density
  • No oxide layering between particles
  • Solid State material deposition
  • Easily machined and finished

For Aircraft Component Repair, aluminum and aluminum matrix powders are applied to gear box housings and actuators, providing a “low heat” coating that is machine-able and anti-corrosive. It edges well at substrate boundaries and easily matches the look of parent materials. The Cold Spray material is easily applied to single gouged or damaged zones as well as full surfaces and diameters. All Cold Spray coatings are dense and oxide free. They exhibit solid material characteristics and have super high bond strengths. A niche repair for damaged Aluminum and Magnesium parts and their alloys.

Although the best materials suited for the Cold Spray process are low melting metals such as Aluminum, Zinc, and Copper, Accuwright is a leader in the Cold Spray community offering  materials like INCO 625 and 718, Titanium, Nickel, and other Super Alloy grades to create more applications in all industries.

Whether your repair is Aerospace, Automotive, or Industrial, Cold Spray can provide a repair coating to meet the changing needs of your industry.

Description of Cold Gas Dynamic Spray

Cold spray is a kinetic spray process utilizing supersonic jets of compressed gas to accelerate near-room temperature powder particles at ultra-high velocities. The unmelted particles, traveling at speeds between 500 to 1,500 m/sec plastically deform and consolidate on impact with their substrate to create a coating system.

The basis of the cold spray process is the gas-dynamic acceleration of particulates to supersonic velocities (300-1200 m/sec-1), and hence high kinetic energies, so that solid-state plastic deformation and fusion occur on impact to produce dense coatings without the feedstock material being significantly heated. This is achieved using convergent-divergent, de Laval nozzles, high pressures and flow rates of gases such as helium or nitrogen. The gases are pre-heated to about 500°C , below the melting point of many metals, to increase the velocity. Pre-heating also aids in particle deformation. The spray pattern is roughly 20 to 60 mm with spray rates of 6.5 to 15 lb/hr to provide a good build-up of Solid state material.

For more information, Contact Us Today! 1-877-247-9108  info@accuwright.com

  • coldspray_slider03.png
  • coldspray_slider02.png
  • coldspray_slider01.png
  • coldspray_slider04.png

Untitled Document