Precision at high temperatures
In hot forming, metals are shaped into forms—some of which are highly complex—at high temperatures. Among the most demanding applications are those in the automotive industry, the aluminum and metal industries, and the glass industry. In these sectors, thermal stress, pressure, or tensile forces act directly on the tool surface, creating numerous challenges.
Boron nitride is used as an excellent lubricant and release agent, even at high temperatures, as a low-friction boron nitride coating, or as a powder for dry lubrication.
In addition, sintered boron nitride is becoming an increasingly important material. Henze BNP manufactures high-precision, self-lubricating, and non-stick tools and equipment components from sintered materials for metal and glass forming processes. Typical components include mold inserts, as well as contact, sliding, and guide elements.
Our Boron Nitride Recommendations
HeBoCoat ® PL-E 125
HeBoCoat® PL-E 125* is an ethanol-based boron nitride coating containing an inorganic binder. The coating adheres very well even at high temperatures, both to metallic substrates and to glass, ceramics and graphite. Thanks to its ethanol-based formulation, the substrate surface is wetted exceptionally well, resulting in rapid drying. Furthermore, the use of pure boron nitride produces coatings with good anti-seize and lubricating properties, thereby reducing wear and contact reactions.
Typical areas of application
- Release agents for sintering, welding and brazing applications; anti-spatter
- Release agents and lubricants in glass processing
- Protection of graphite components during silicification
- Coating of crucibles, nozzles and plugs in the foundry sector
Product Highlights
- quick-drying
- Excellent separating, lubricating and protective properties, even at high temperatures
- good surface adhesion
- clean welds and solder joints
- High production output thanks to the extended service life of the plant
- greater cleanliness compared with conventional release agents
- dry lubricating film – no oils, greases or silicones
- maximum effect with economical dosing
- effective protection against metal splashes
* HeBoCoat Power Line – Ethanol BN-Content ⋅10
HeBoCoat ® SL-E 125
HeBoCoat® SL-E 125* is a boron nitride spray in a handy aerosol can. Its ethanol-based formula ensures good wetting of the substrate and rapid drying. Inorganic binders ensure excellent adhesion to metal, glass, ceramics and graphite, particularly at high temperatures. The proportion of fine particles in the boron nitride powder gives the coating good release and lubricating properties.
Typical areas of application
- Release agents for sintering, welding and brazing applications; anti-spatter
- Release agents and lubricants in glass processing
- Protection of graphite components during silicification
- Coating of crucibles, nozzles and plugs in the foundry sector
- Anti-reflection spray for surface measurements at temperatures >200°C
Product highlights
- dries very quickly
- Excellent separating, lubricating and protective properties, even at high temperatures
- good surface adhesion
- High production output thanks to the extended service life of the plant
- clean welds and solder joints
- greater cleanliness compared with conventional release agents
- maximum effect with economical dosing
- effective protection against metal splashes
- dry lubricating film – no oils, greases or silicones
* HeBoCoat-Sprühlinie – Ethanol-BN-Gehalt ⋅10
HeBoCoat ® EL-W 100
HeBoCoat® EL-W 100* is a ready-to-use, water-based boron nitride suspension. Owing to its high temperature resistance, it is specifically designed for use as a release and lubricating coating in forming processes. It prevents the metal component from sticking to the tool, thereby facilitating the removal of complex components from the mould.
Typical areas of application
- as a high-temperature separating layer in hot forming
Product Highlights
- This inorganic binder system combines good substrate adhesion with excellent release properties
- Adhesion to various surfaces
- extends the service life of machinery and tools
- temperature-resistant in air up to 900°C
- reduces the amount of cleaning required
- easy to work with
- economical consumption
* HeBoCoat Expert Line – Water BN-Content ⋅10
HeBoSint ® SL-A 800
Thanks to the addition of aluminum nitride, HeBoSint® components are exceptionally well-suited for applications requiring excellent thermal conductivity and mechanical wear resistance.
- excellent wear resistance
- good release properties
- very good thermal conductivity
- No wetting by most molten metals
- high electrical insulation
HeBoSint ® SL-N 300
HeBoSint® SL-N 300 ceramic exhibits optimized wear resistance due to the addition of silicon-aluminum oxynitride. Components made from this material demonstrate their advantages precisely in applications where high mechanical stress and high wear resistance are critical.
Product Highlights
- Chemically and mechanically optimized wear behavior
- High compatibility with molten metals
- Maintaining the Purity of the Melt
- good release properties
- No wetting by most molten metals
- low material weight
HeBoFill ® extrusion pro
HeBoFill® extrusion is Henze’s new boron nitride powder, developed specifically for the aluminium extrusion process. HeBoFill® extrusion offers excellent lubricating and anti-adhesive properties, a high degree of purity and good flowability. This effectively prevents aluminium from adhering to the extrusion die and other functional surfaces during the extrusion process.
HeBoFill® extrusion boron nitride powder is easy to process cleanly and is applied particularly economically, evenly and efficiently by electrostatic spraying. This increases the service life of the die and enhances process reliability during extrusion.
Typical areas of application
- Lubricant and release agent between the block and the press disc
- Lubrication of the container seal
Product Highlights at a Glance
- optimal release and lubrication properties
- increases the service life of the press disc and improves process reliability
- economical, efficient consumption
- improves cleanliness in the work area compared with conventional
release agents such as oils, greases and soot - High-quality finish achieved through electrostatic spraying
- uniform coating surface
The benefits at a glance:
- High temperature resistance
- Reducing buildup during the molding process for greater process stability
- Compliance with dimensional tolerances and assurance of molded part quality
- Protecting plant equipment from corrosion
- Reduced maintenance and cleaning requirements
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Frequently Asked Questions
Why is boron nitride used in forming technology?
Highly effective release agents and lubricants are essential for demanding forming processes such as drawing, rolling or pressing metals. Boron nitride is ideal for these conditions as it retains its excellent lubricating and separating effect even at extreme process temperatures and under high pressure, thus ensuring smooth, safe processes.
Which boron nitride products from Henze BNP are suitable for forming processes?
Our liquid coatings are primarily used in industrial forming technology. HeBoCoat® coatings and our special HeBoFill® powder are used. These products can be optimally applied and create an extremely stable layer between the tool and the component to be machined as an effective release agent and lubricant.
What specific advantages does the use of boron nitride offer in drawing, rolling and pressing?
The use of HeBoCoat® and HeBoFill® not only ensures optimum lubrication and metal flow, but also protects the process from typical disruptive factors. Thanks to the special material properties of boron nitride, these process aids do not cause unwanted carburisation, short circuits or disruptive contamination during forming. This protects the tools, ensures high-quality workpieces and enables particularly clean working conditions.