Material Coatings

Cleaning it up!

Starting with clean material is key to success in creating a superior product. Our large sandblasting building gives us the ability to handle large vessels quickly and easily. Along with surface grinding we insure that we start with as clean a material as possible before the we start fabrication of your product.

We're the Experts in Hard Surfacing!

Here at Palmer Hard Surfacing is a specialty of ours. Where others say we can't, we say we can. In product environments that are extremely abrasive the vessels and other equipment can have a layer of hard facing added to the surface to help decrease or eliminate the failure of the equipment due to these harsh conditions.

Size Matters?

Palmer has the ability to hard surface extremely large vessels. Some of the vessels we deal with will have over 4,000 pounds of hard facing material applied. With other jobs requiring the application of material in hard to reach or narrowly applied specs.

Dressing it out

In some cases the area to be hard surfaced must then be milled or turning to a given specification. Having a single source to handle this means you can assure yourself that the job will be done right the first time. And the Palmer Companies' extensive experience and fully equipped machine shop can give consistent quality in your finished product that meets of exceeds the required specification.

PTA (Plasma Tranfer Arc) Coatings

Plasma transferred arc (PTA) hardsurfacing is a versatile methof of deposting high-quality metallurgically fused depostis on relatively low cost surfaces. Soft alloys, medium and high hardness materials and carbide composites can be deposited on a variety of substrates to achieve diverse properties such a mechanical strenght, wear and corrosion resistance and creep. PTA hardfacing has several advantages over traditional welding processes such as oxyfuel(OFW) and gas tungsten arc (GTAW) welding. PTA permits precise control over feed rates and level of deposit making for extremely accurate depth of coverage.

HVOF (High Velocity Oxygen Fuel) Coatings

HVOF (High Velocity Oxygen Fuel) Thermal Spray Coatings are a mixture of gaseous or liquid fuel and oxygen that is fed into a combustion chamber, where they are ignited and combusted in a continuous operation. The resultant hot gas is at high pressure and emanates through a converging–diverging nozzle and travels through a straight section. The jet velocity at the exit of the barrel exceeds the speed of sound. A powder feed stock is injected into the gas stream, which accelerates the powder. The stream of hot gas and powder is directed towards the surface to be coated. The powder partially melts in the stream, and deposits upon the substrate.

The process uses both kinetic and thermal energy to cause the molten particles to bond with the substrate producing a coating with characteristics unachievable with a Plasma Spray Coating Method. The resulting coating has low porosity and a high bond strength. Another advantage of the HVOF process includes the ability to produce very low surface roughness. This normally results in easier and faster finishing or the surface. It is typically used to deposit wear and corrosion resistant coatings on materials, such as ceramic and metallic layers.