Rijdam Wear Resistant Castings
Parts produced by centrifugal castings are dense, sound and have a fine grain structure in comparison to static and investment cast parts. In this method of casting, a centrifugal force is exerted on the molten metal whilst it is poured into a cylindrical mold spinning on its axis. Chill crystals form uniformly at the mold-metal interface. Solidification continues pushing oxides, impurities, and gases towards the core that is later bored out leaving behind a dense casting. Our suppliers produce many components out of centrifugal castings to meet Navy Nuclear and Mil-spec requirements and applications.
We supply both horizontal and vertical centrifugal castings in a variety of sizes, including special step mold configurations.
Investment casting is also known as the lost wax process. A wax impression is coated with various ceramic materials and then replaced with the chosen alloy to create an exact replica of the initial wax pattern. The advantages of this casting process over others include flexibility of design, close tolerances, thin sections, and high static and dynamic mechanical properties. The use of this process tends to produce a good surface finish with lower total component cost. We supply investment castings of cobalt and nickel- based alloys to meet customer specifications.
Sand casting is ideal for large components in small quantities. Sand molds are made using sand comprised of multiple binders packed in a two part wooden form. The form is then filled with molten metal and allowed to cool. Some machining is generally required when using sand castings.
Rijdam provides hardfacing services to apply wear and corrosion resistant alloys to components typically manufactured from softer base metals like carbon and stainless steels. Rijdam hardfacing alloys help improve the life of finish machined components, thereby reducing maintenance costs and downtime.
Rijdam offers custom hardfacing of components from simple to moderate complexity. Rijdam produces hardfaced components by various welding methods including Autogenous welding, Plasma Transfer Arc (PTA), Tungsten Inert Gas (TIG), and Metallic Inert Gas (MIG) to create a superior high strength metallurgical bond that is formed between the base material and the hardfaced overlay. After hardfacing the components, they are post weld heat-treated, and then machined to specification.
Brochure Stelliet alloys
Our range of atomized cobalt- and nickel-base powders includes specific alloy compositions and sieve cuts for use with PTA, laser cladding, HVOF and flame spraying techniques.
Superior quality against competitive prices! Request a quote now!
Rods and wires
The hardfacing electrodes that we have in our assortment deposit quickly, with excellent weldability and slag removal, producing smooth, sound coatings.
In addition, we have a big scala of continuous-cast rods available in a wide range of diameters and lengths for the oxyfuel and GTAW process. Both industry standard and customized compositions can be produced to meet your specific requirements.
Next to these rods, we have a large range of hardfacing filled wires.
Amongst others, the following categories.
- Work Hardening Manganese Alloys
- Low and Medium Alloys Steels
- Heat Treated Steels for Tooling
- Martensitic Stainless Steels
- Nickel Base Alloys
- Cobalt Base Alloys
- Hardbanding Alloys
And last but not least, we have our favorite Technogenia's patented Technosphere and Technodur, the ultimate solution to extreme wear problems.
Technodur® and Technosphere® are available in 20 kg reels (also possible in 10 or 15 kg upon request) allowing an economic and reliable weld.
These materials are applied with the Technokit T2000, an oxyacetylene torch.
Welding is easy and economic. It offers the major advantage of preserving the hardness of the Tungsten Carbide particles.
Technodur® and Technosphere® can be applied to all non-martensitic steels and weldable stainless steels.
The deposits are free from cracks and any deformation caused by welding is very limited.
Technodur® and Technosphere® can be welded easily onto themselves. This is a real advantage for some repairs.
Technodur : Crushed Tungsten Carbide grains – Hardness 2000 HV ± 200 HV
Since the beginning Technodur® has represented a very significant advance in the field of anti-wear protections.
They give new possibilities and advantages:
- no smokes
- no loss during welding
- exceptional resistance to abrasion
- ease of repairs
- no cracks
Technosphere : Spherical cast Tungsten Carbide grains – Hardness 3000 HV ± 500 HV
The difference lies in the use of spherical Tungsten Carbide grains called Spherotene®.
The spherical shape and the extreme hardness of the Spherotene® give Technosphere®, amongst other properties, two advantages:
- Better shocks resistance
- Unequalledwear resistance