LASER CLADDING

The 3 Qualities of Laser Cladding

01
02
03

The Characteristics of Direct Diode Laser Cladding

01 Does Not Melt, Due to Low Heat Input
Comparison at Stellite®6 Claddings
Comparing Plasma Transferred Arc Cladding with Laser Cladding: Stellite®6 Cladded layer of 3mm
Stellite ®6 Cladded Layer
Cross Sectional Harness Distribution of Stellite ®6 Cladded Layer
Compared with PTA Cladding, Laser Cladding’s penetration depth is only 1/5, obtaining higher purity and higher hardness.
02 Decrease of Distortion Due to Low Heat Input
Laser Cladding on a Hydraulic Pump Component
By using Laser Powder Cladding on a Piping component for hydraulic pumps, cladded layer of low distortion is produced. Additionally, by adjusting the diameter of the laser beam, the cladding width is controlled, causing the required amount of cladding to be cut down
Laser Cladding on a Hydraulic Pump Component
Cladding Material: Stellite® 12 (corrosion and wear resistant Cobalt alloy) / Base Material: SUS630
03 Small area can be cladded by using beam size of φ1mm
Stellite® Alloy Laser Cladded Small Scale Ring Piece
Exterior of the Laser Cladding
Near Net Cladded just at the Base Material Surface
Near Net Cladded just at the Base Material Surface
Laser Cladded Layer Cladded Thickness of 2mm
φ31.5 OD x 25mm thick
Cross section of Laser Cladding
(Oxalic Acid Electrolytic, Nital etching)
(Oxalic Acid Electrolytic, Nital etching)
Microstructure in the vicinity of the Laser Cladding
A
B
C
Microstructure in the vicinity of the Laser Cladding
Expected Effects
By using near net Laser Cladding, reduction in post cladding machining volume
Improvement in performance due to the low heat input and low dilution of Laser Cladding create surface modified layer of high physical properties and high quality.

Comparison with Thermal Spraying

Thin Laser Cladding Coating
Suppressing the dilution of the base material through low heat input, Thin Laser Cladding Coating produces a layer that is only a few hundredμm thick that obtains higher peeling, corrosion, and wear resistance, compared to other thin coating method.
Stellite® 6 layer/film thickness 400μm
Thin Laser Cladding
Thin Laser Cladding
HVOF Coating (High-Velocity Oxygen Fuel Thermal Spraying)
HVOF Coating (High-Velocity Oxygen Fuel Thermal Spraying)
Higher Corrosion Resistance Expected from the Internal Quality and Low Dilution
Primary Element Catalog Spec Measured Value Dilution Ratio
Cobalt 55% 50.8% 7.6%
Chromium 28.5% 27.9% 2.1%
Tungsten 4.5% 4.2% 6.7%
Low porosity and low dilution ⇒Higher Corrosion Resistance
Abrasion resistance obtained through low dilution and fine microstructure
Abrasion resistance obtained through low dilution and fine microstructure
High Hardness from Low Dilution and Fine Microstructure ⇒ Corrosion Resistance
Abrasion resistance obtained through low dilution and fine microstructure

High Value Added Composite Laser Cladding

Ceramic Particle Composite Laser Cladding
Low Dilution
Fine Cladding
What is Ceramic Particle Composite Laser Cladding?
As the name states, Ceramic Particle Composite Laser Cladding is a cladding method that uses lasers. Because lasers have a heat input much lower than conventional methods, ceramic particles can be added without melting and keeping their form within the cladded layer.
Ceramic Particle Composite Laser Cladding
Merits
1. The type of ceramic particles and matrix metal can be selected each time according to the use and objective
2. Cladded layers with the physical properties of both ceramic and metal is obtained because the ceramic particles do not melt
Examples
TiC+ST#6
VC+ST#6
W2C+ST#6
Cr3C2+ST#6
Magnified View of NbC Particle
Sample of Usage
NbC+ST#6
Abrasion Amount after 6 Weeks
SNYG’s Composite Laser Cladding technology is being used on swirl vanes, a system which separates the high-temperature gas and catalysts inside oil refineries
Cobalt Base + Cr3C2

Product Example 1

Example of Construction on Turbine Blades
Fine Cladding
Low Dilution
Using a beam with a minimum diameter of 1mm, cladding on thin and narrow base materials has become possible, as well as cladding on intricate 3D shapes!!
Laser Cladding Usage Example on Turbine Blades

Product Example 2

Laser Cladded Abrasion Resistant Industrial Knives
Purpose of this Technology
Exposed to highly abrasive environments, Industrial Knives require high wear and impact resistance.
This Industrial Knife promises high abrasion resistance through Laser Cladding that densely disperses Ceramic Particles, which have higher hardness than metal, into the cutting edge surface.
Additionally, by choosing the most appropriate alloy for the metal matrix, the product obtains resistance against impact and corrosion, withstanding harsh environments.
Surface Modified Region
Magnified View of Cladded Layer
Magnified View of Cladded Layer
Material Expected Effects
Stainless Impact Resistance, Corrosion Resistance
Nickel Alloy Impact Resistance, Corrosion Resistance
Cobalt Alloy Abrasion Resistance, Corrosion Resistance

Product Example 3

Ceramic Composite Laser Cladding
What is Ceramic Composite Laser Cladding?
By using the Laser Cladding Technology, which clads at a much lower temperature than conventional systems, ceramic particles can be added without melting and maintaining its shape.
What is Ceramic Composite Laser Cladding?
Characteristics
1. Ceramic Particle and Matrix Metal is chosen according to the utility and purpose of the product
2. Being that the ceramic particles do not melt, cladded layer that holds the physical properties of both the ceramic particles and metal is produced