BLC Lasercladding GmbH
In the area of laser cladding (laser metal deposition, LMD, DED) we possess a long-term and excessive experience.
We offer customer-optimized special solutions for powder nozzles, powder feeders, laser cladding systems and process support.
Your partner for powdernozzles, powder-feeder and individual laser cladding solutions.
BLC Powder-nozzles
CNS 37, CNL 511, CNZ 25 "Zero"
Our BLC powder nozzle works with 3, 6 or 4, 8 individual jets that guide the powder into the laser melt pool in a very well-focused manner.
The powder jets are aligned in such a way that they optimally fill the melt pool.
Different configurations can be selected for the nozzle tip so that the powder flow is optimally adapted to the laser spot.
The nozzle has a working distance from 16mm to 30mm and is therefore not susceptible to back reflections and hot particles spraying back.Due to the single beams, it is possible to weld independently of the 3D direction, as the powder flow is not influenced by tilting the nozzle.
The nozzle is designed in such a way that it is possible for the user to replace wear parts quickly and economically.
The optimal powder focus ensures a very good efficiency, with well-set parameters of up to 95%.
In cooperation with the BLC feeder systems, the nozzle can be integrated into different system concepts such as robot systems, CNC systems, XYZ axis systems and 3D printing systems (additive manufacturing).
Furthermore, it is possible to use the nozzle with an angle optic for internal coatings.
It is possible to adapt the nozzle to different laser types (diodes, fibre, disk) and spot sizes.
We offer customised adapters to adjust the nozzle to different optics.
We also create customised solutions. Please contact us.
• Very good powder focus
• Effectiveness of up to 95%
• Wear parts can easily be changed by user
• Powder injectors available in various diameters
• Individual customsing of customer components and processes possible
• Laser focus from 2 mm to 11 mm
• Distance to part 16mm, 20mm, 25mm, 30mm
• Prepared for angled optics
• Optimized for up to 26 kW laser power and long process intervals
• Nozzle tips with various angles available
• 3D-processing independent from direction
Typical applications:
• Wear and corrosion protection
• Coating of new parts
• Repairing and alteration of parts and tools
• 3D printing
• High-speed laser-cladding
• Creating or rebuiling of contures
• Improving part qualities
• Rebuildung or reworking of structures
• Additive manufacturing
• And many more…
Examples for components:
• Hydraulic zylinders
• Drilling tools
• Augers of plastic machines, screw feeders
• Rollers for paper or printing industry
• Knives for food industry or agriculture
• And many more…
An extract of suitable powders:
• Iron-based materials, i. e. 316L
• Nickel alloys i. e. Inconell 625, NiCrBSi
• Cobalt alloys, i. e. Stellite 21, Stellite 6 etc.
• Carbide materials
• …
BLC Disc-Powder-feeders
BLC one, twin, triple or more...
Our powder feeder have a Siemens S7 PLC control and can be operated internally or controlled by a higher-level control (analog or via bus system) We build all controls individually tailored to our customers. The programming can be adjusted according to customer requirements.
The powder hopper can be adapted to the required process intervals and powder quantity and are compatible with both systems.
We test your powder materials in advance and help you to setup the right system.
General information on our BLC Powder feeders:
The powder pots are available in different sizes and can be easily removed from the feeder unit for cleaning or changing different powder materials. Furthermore, the powder pots can be used with any of our conveying principles. The plexiglass housing allows a good visual control of the conveying process.
Our feeders are equipped with mass flow controllers to ensure a reproducible process. Here a choice can be made between different gas quantities and types, such as argon or helium. The amount of carrier gas is very low in all BLC systems, which ensures that the powder particles are conveyed slowly into the process.
Principle of the disc feeder
The disc feeder is based on a rotating disc with a groove into which the powder from the pot is applied. On the disc there is a scraper that determines the height of the powder. The width and depth of the groove, together with the speed of rotation, determine the flow rate of the powder, which is conveyed to the extractor via the disc. The width of the groove and depth of the disc can be selected depending on the amount of powder.
• Siemens S7 control with HMI display
• Carrier gas mass flow controlled (0-10 or 025l/min argon or helium)
• Good visual control thanks to acrylic glass cover
• External control digital, analog or via bus system
• Pressure-resistant version with aluminum viewing window
• Powder pots can be changed quickly
• Mechanical wear parts available as cost-effective spare parts
• The powder hopper and conveyor are quick and easy to clean
• Small amount of carrier gas and therefore no high acceleration of the powder into the process
• Pots are available in different sizes (optionally heated)
• Powder materials: e.g. E.g. iron base, nickel, cobalt, ceramic, much more.
BLC powder nozzle CNS 37
3 and 6 individual jets
for Lasercladding and high-speed- cladding, 3D printing
Powder particle size
5-200 µm (depending on powder feeder)
Efficiency rate
Up to 95 % (depending on
parameters and powder)
Powder injectors
Can be switched from 1mm, 1,2mm 1,5mm, 1,8mm, 2mm
Quantity fed
Approx. 5 g to 200 g (depending on injector and powder)
Melt pool diameter
3 mm to 7 mm
Powder focus
3 mm to 7 mm (depending on injector)
Focal length
Min. 150 mm (with XY adjustment)
Distance between nozzle and component
25mm, 30mm
Laser type
Diode, fiber, disk laser
Max. laser power
Up to 26 kW depending on powder and process
for lasercladding, high-speed-cladding, 3D-printing
BLC powder nozzle CNL 511
3 and 6 individual jets
for Lasercladding and high-speed- cladding, 3D printing
Powder particle size
5-200 µm (depending on powder feeder)
Efficiency rate
Up to 95 % (depending on parameters and powder)
Powder injectors
Can be switched 1mm, 1,5mm 1,8mm, 2mm
Quantity fed
Approx. 5 g to 250 g (depending on injector and powder)
Melt pool diameter
5mm to 11 mm
Powder focus
5 mm to 11 mm (depending on injector)
Focal length
Min. 150 mm (with XY adjustment)
Distance between nozzle and component
25 mm, 30mm
Laser type
Diode, fiber, disk laser
Max. laser power
Up to 26 kW depending on powder and process
for lasercladding, high-speed-cladding, 3D-printing
BLC powder nozzle CNZ 25 "Zero"
4 and 8 individual jets
for Lasercladding and 3D printing
Powder particle size
5-160 µm (depending on powder feeder)
Efficiency rate
Up to 95 % (depending on parameters and powder)
Powder injectors
Can be switched 0,8mm, 1,0mm 1,5mm
Internal diameter 1.5 mm
Quantity fed
Approx. 5 g to 180 g (depending on injector and powder)
Melt pool diameter
2 mm to 5 mm
Powder focus
2 mm to 5 mm (depending on injector)
Focal length
Min. 170 mm (with XY adjustment)
Distance between nozzle and component
20mm, 25 mm
Laser type
Diode, fiber, disk laser
Max. laser power
Up to 8 kW depending on powder and process
for lasercladding, 3D-printing
Technology laser cladding process description
Laser cladding, laser metal deposition, LMD
The laser beam heats up the workpiece locally and creates a melt pool. Fine metal powder or wire is fed directly into the melt pool from a nozzle mounted on the processing optics. There, the material melts and bonds with the basic material, so that welded-together beads are formed, resulting in a new component surface with the same or improved properties.
Different component properties can be created, such as wear or corrosion protection, which can withstand extreme loads. It is also possible to produce new geometries (3D printing or additive manufacturing) or to repair components.
Technology laser spraying and high-speed laser metal deposition
The process description is almost the same as for laser metal deposition, the difference lies in the process parameters.
With laser spraying, the high speeds do not produce welded beads but a surface that almost looks like a thermal spray coating. The advantage of laser spraying is the metallurgical bond between the component and the applied material.
The thinner layer thickness results in a lower consumption of powder, which makes the coating much more economical. Another benefit is the low cost of reworking, as in most cases the surfaces only need to be sanded.
An important area of application is hard chrome replacement. Long cylindrical components with a large diameter can be coated easily and economically to produce corrosion and wear protection.