GFHA® – Greyfrog Hard-Faced Alloys
Made super tough by automated deposition welding and laser metal deposition.
Hard-faced parts are most commonly made by adding highly wear-resistant chromium carbides to greatly increase the wear resistance of parts. Also used to increase other desired mechanic characteristics resistance to heat, impact, corrosion, pressure. Different applications can be made by systematically refining or combining materials. Soft can be made hard and strong by adding single or multiple layers of carbides, thermally insulating material can be combined with a conductive layer; or simply can cover metal with additional materials that resist wear, pollution, high temperatures, water, or chemicals. All of our products are made by producing a metallurgical bond that strongly and permanently attaches the deposited alloy onto the base material, creating the final product that has best possible adhesion. Metal deposition is made by laser, wire or powder, depending on the needs of the customer, the industry and the characteristics of the final product.
GFCA® – Greyfrog Cast Alloys
Greyfrog Alloys develops the cast for different metal alloy variants, including: Cast Iron, Steel and Alloys
To help you make the best choice of material suited to your needs, we have alternative solutions for our customers with different mechanical characteristics of each material, which are highly superior to the EU standards. Greyfrog Alloys has different molding sites that include foam casting, boxless molding, vacuum process casting and hand molding allowing us to manufacture parts ranging from 50kg to 7500kg. We manufacture a lot of different parts in small and average series and in most diverse variants of casts such as: grey cast iron, nodular iron alloy cast steel, SiMo, ductile cast iron, austenitic ductile iron, cast iron with chromium and flake graphite iron as well as different highly-advanced alloy cast irons and steels. Our three main molding methods, associated with a core room using the cold and furan box processes, are complementary for the manufacturing of parts in small and average series of strongly cored parts. We offer most of our popular iron and steel castings based on self-hardening furan resin sand moulding technology and inductive melting process. We manufacture a lot of different parts in small and average series and in most diverse variants of casts such as: grey cast iron, nodular iron alloy cast steel, SiMo, ductile cast iron, austenitic ductile iron, cast iron with chromium and flake graphite iron as well as different highly advanced alloy cast irons and steels. We have a dedicated hand moulding workshop for the manufacturing of big parts well as ones with a substantial added value. Our moulding sites use a furanical type of moulding method which enables the sand to harden through a chemical process. Chrome mould casting offers the most popular of our premium wear resistance series. Depending on the characteristics different additions of molybdenum are included. According to requirements, niobium, vanadium and other particularly carbide-forming materials are added. These materials reach their highest possible resistance to wear only after an initial heat treatment.
Coated and Thermal Sprayed
Thermal spraying is used to coat abrasive stressed components. Our thermal sprayed products are used in most industrial applications where minimal to extreme wear-resistance is required, including the following: natural gas extraction and oil recovery, mining, dredging, chemical, cement, coal processing, steel processing, ceramics, agriculture, pump and conveyor, textile and glass, recycling, wood processing and many other industries. The process for making wear parts with complex shapes including internal diameters. The process produces wear-resistant layers, which are not possible to produce with conventional welding techniques. Depending on the stress, it is possible to produce a variety of different layers.