| LWK armouring uses various thermochemical surface treatments to protect iron and steel materials from extreme adhesive wear or abrasion. They are successfully used wherever other methods (nitriding, flame, induction and case hardening, kolsterising or chromium plating) reach their limits. The extremely hard, wear resistant protective layer is produced as boron or chromium diffuses into the outer skin of the base material. Depending on the diffusion element, this process is called boriding or inchromating. Our products are sold under the brand names plasbor® and plascrom® respectively. |
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| Due to the similarity of the processes, boriding or inchromating layers have a number of common features: |
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| • Suitable for iron materials / ferrous metals, high alloy steels or other alloys |
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(e.g., Ni alloys) |
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| • Thickness of the diffusion layer from 10 to 300 µ |
| • Surface hardness between 1600 and 2000 HV, i.e., three times as high as for |
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untreated materials and twice as high as after nitriding or hardening |
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| • Higher corrosion resistance than in the case of untreated materials |
| • Clear reduction of the tendency to cold welding as compared with other untreated |
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materials |
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| • Important basic material properties such as thermal conductivity, electrical |
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conductivity, thermal stability, and elasticity remain unchanged |
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| Of course these wear protection layers offer additional specific features. Depending on the base material and the application concerned, our experts will recommend the optimum method. |
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| Boriding is carried out by LWK. For inchromating orders, technical processing is carried out by our partner Chromin Maastricht bv while commercial matters will be taken care of by LWK. |
| www.chromin.nl |
