(Super)Alloys
The choice of sprayable and weldable alloys is almost endless; for every conceivable situation, a wear solution is possible with an alloy for a satisfactory functional coating. Below is a limited list of some commonly used alloys.
Martensitic stainless steel, or
Cr steel, provides stainless steel with resistance at operating temperatures up to 540 ° C. Cr steel is widely used for dimensional repair of machine parts and / or as a buffer layer for a wear-resistant top layer.
Type: AISI 420 / AISI 413
Applications:
- Propellor Shafts
- Pump rotors
- Pump sealings
- Mechanical sealings
- Pistons
- Transportrollers
- Walsen
- Hydraulic Pistons
- Pump impellers
- Size recovery
Austenitic
stainless steel coatings are especially useful for applications where
particularly good corrosion resistance at operating temperatures below
540 ° C is required. The material is also widely used for size restoration, where thicker layers can easily be applied. This type of stainless steel can be machined very well with perfect results.
Type: AISI 304 / AISI 316
Applications:
- Paper rollers
- Propellor Shafts
- Axles
- Pump sealings
- Mechanical sealings
- Pistons
- Transportrollers
- Walsen
- Hydraulic Pistons
- Pump impellers
- Cyclons
- Size recovery
Aluminum bronze (Cu-AlFe) is a coating material that is wear and seawater resistant and has excellent running properties. The aluminum gives the aluminum bronze better corrosion properties through an unruly protective oxide layer. The maximum operating temperature is approximately 450 ° C. The spray layers are microporous and therefore self-lubricating, making them easy to finish smoothly and tightly.
Applications:
- Axles
- Pistons
- Rollers
- Bronze Pumpimpellers
- Propellor Shafts
- Guide bushings
- Piston bands
- Bearing shells
- Guideways
- Glasgutters
- Repair of Bronze parts
A Babbit coating is a soft alloy based on tin with antimony and copper, which we often use in the production of babbitt bearing shells and other plain bearing applications. The low hardness of the babbits ensures that hard particles in the bearing become embedded in the babbitt layer, thus preventing damage to the counter race.
Applications:
- Bearing shells
- Skids
- Cross Heads
- Guideways
We
use the Nickel-based super alloys as a corrosion-resistant adhesive
layer for ceramic and carbide coatings and for the repair of machine
parts made from super alloys. This coating is also used for the coating of machine parts that are exposed to corrosion and oxidation at temperatures up to
980°C.
An
advantage is that nickel base alloys are acid and seawater resistant,
although the materials are difficult to machine due to their high
toughness and hardness.
.
Applications:
- Pump pistons
- Gate Valves
- Liners
- Sleeves
- Crank shafts
- Flue gas outlest
- Oil- and gas extraction equipment
- Bondinglayer for cylinderrods
- Repair of superalloy components
We
use cobalt-chromium and cobalt-chromium-molybdenum super alloys when
wear resistance and, above all, extreme, chemical and corrosion
resistance at high temperature is required. The material has good running properties at high temperatures, but is difficult to machine due to its high hardness.
Known commonly used cobalt base superalloys are Stellite and Tribaloy materials
Applications:
- Valve Seats
- Valves
- Pump axles
- Bearings
- Wear bushes
- Mandrels