Laser Cladding Alloy Coating Services

Taizhou Shandi Additive Manufacturing Co., Ltd., with the registered trademark "Shandi Additive," is dedicated to the research, development, and production of high-quality metal alloy powders. Serving both domestic and international markets, the company provides standard high-temperature alloy powders, tool steel powders, aluminum alloy powders, nickel-based self-fluxing alloy powders, cobalt-based alloy powders, amorphous alloy powders, brazing powders, iron-based alloy powders, metal-ceramic composite powders, and metal carbide composite powders, among others.
Laser cladding alloy coating manufacturing and testing services.
Laser cladding technology is primarily used to enhance the wear resistance, corrosion resistance, high-temperature resistance, and oxidation resistance of component surfaces, achieving surface modification or repair goals and meeting specific performance requirements for material surfaces.
In conventional laser cladding processes, laser energy is mainly used to melt the substrate material to form a molten pool. Powder is injected into the molten pool, where it melts and solidifies to form a protective coating.
Laser cladding technology fundamentally changes the melting location of the powder, allowing it to intersect with the laser above the workpiece and melt before being uniformly coated onto the workpiece surface. Its cladding rate can reach as high as 20-200 m/min. Due to low heat input, heat-sensitive materials, thin-walled components, and small-sized parts can all undergo surface cladding using this technology. It is also applicable to entirely new material combinations, such as coatings on aluminum-based, titanium-based, or cast iron materials. Since the surface quality of the coating is significantly higher than that of conventional laser cladding, only simple grinding or polishing is required for application. This greatly reduces material waste and subsequent processing, offering irreplaceable advantages in cost, efficiency, and thermal impact on components.
Hard stainless steel corrosion-resistant coatings achieve a hardness of HRC50 or above, with no pitting.
Ultra-hard wear-resistant coatings can reach a hardness of HRC65 or above, suitable for various surface friction and impact wear applications.
Applicable coating thickness: 0.05-3 mm.
High surface quality, with a post-cladding surface roughness of up to Ra25 μm.
Suitable for various material systems, including cobalt-based, iron-based, nickel-based, copper-based, amorphous, and composite materials.
Laser cladding, also known as laser hardfacing, uses high-energy lasers as a heat source and metal alloy powders as welding materials. By synchronously applying the laser and alloy powder to the metal surface, rapid melting and solidification occur, forming a dense, uniform, low-dilution, and thickness-controllable metallurgically bonded alloy layer. It is a surface modification method that significantly improves the wear resistance, corrosion resistance, heat resistance, oxidation resistance, and electrical properties of the substrate.
The material and hardness of the laser cladding layer can be flexibly adjusted according to requirements, with different coating materials yielding different surface properties. Common cladding layer materials include iron-based, nickel-based, and cobalt-based alloys.
Technical Characteristics:
1. High cooling speed (up to 10^6 K/s), belonging to a rapid solidification process, facilitating the formation of fine-grained structures.
2. Low coating dilution rate (generally less than 5%), forming a strong metallurgical bond or interfacial diffusion bond with the substrate. By adjusting laser process parameters, high-quality coatings with low dilution rates can be achieved, with controllable coating composition and dilution.
3. Low heat input and minimal distortion, especially when using high-power density rapid cladding, deformation can be reduced to within the assembly tolerance of the component.
4. Almost no restrictions on powder selection, particularly for cladding high-melting-point alloys on low-melting-point metal surfaces.
5. Wide range of cladding layer thickness, with single-pass powder feeding achieving a coating thickness of 0.2–2.0 mm.
6. Capable of selective area cladding, with low material consumption and excellent cost-performance ratio.
Application Areas:
Widely used in power plant equipment, petrochemical equipment, coal chemical industry, fine chemical industry, fluorine chemical industry, chlor-alkali industry, PTA production, aviation manufacturing, environmental protection, seawater desalination, water treatment, mold industry, pharmaceutical machinery, food machinery, packaging machinery, paper machinery, heat exchange equipment, electrochemistry, metallurgy, offshore platforms, nuclear power, shipbuilding, cement manufacturing, salt production, medical devices, sports and leisure, and plate heat exchangers, among others.