Nitriding Surface Treatment and PVD Coating services
► CERTESS® is a problem-solving technology for issues like : |
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① Wear The surface of molds are exposed to wear due to abrasive content (fiber glass, filler) and erosive wear due to repeated flow of plastic/rubber. Thanks to a high hardness and optimal friction properties, CERTESS® technologies increase the resistance to wear significantly, leading to lower maintenance, longer mold lifetime and higher productivity. |
② Oxidation resistance
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③ Releasability & Flowability CERTESS® coatings prevents bonding between molds and plastic/rubber. This leads to a better flowability of the liquid plastic/rubber, and a better releasability once the injection cycle is over. This property is critical for plastic/rubber parts with thin sections and allows for more complex shapes. The full injection cycle time may also be reduced. |
Mold & Dies are subjected to high temperature and repeated surface friction, which are conditions that facilitate surface oxidation and fretting corrosion. CERTESS® coatings prevents this occurrence up to 500℃and protects from corrosion by Halogen gas such as Cl.
► Three main advantages of PVD coating / CERTESS® |
CERTESS® is a plasma-enhanced sputtering coating process developed by HEF Group. Its main advantages are:
① Low temperature process
The sputtering technology allows for low temperature coating deposition, less than 180℃. As a consequence, any steel (SUJ, SCM, SKS) or aluminum alloy may be coated without any deterioration of the substrate’s mechanical properties or dimensions.
② High accuracy coating
CERTESS® coating technology allows for high uniformity and repeatability, which is critical for high accuracy industries such as semi-conductor industry or mold manufacturing. In addition, the low thickness of the coatings minimize the impact on the dimensions.
③ No droplet and smooth surface
CERTESS® technologies was developed to minimize the occurrence of droplets like AIP (Arc Ion Plating). The coating surface is uniform and smooth in case of low roughness substrate.
► CERTESS® application examples on molds |
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Industry |
Item |
Mold Material |
Molding material |
Example Solution |
Comparison |
Effect |
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Connector |
Core pins |
Any steel may be coated |
LCP with 50% glass fiber |
CERTESS® X |
No treatment |
Extending the service life 2-3times |
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Interior parts of automotive |
Cavity |
ABS-PC |
CERTESS® X |
No treatment |
Reducing the maintenance |
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Plastic parts |
Cavity |
PS |
CERTESS® DLC |
No treatment |
Perfect filling, reducing cycle time by 30% |
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Optical lens |
Mold |
Resin for optical |
CERTESS® N |
No treatment |
Reducing mold dirt |
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LED lens |
Core |
Silicone rubber |
CERTESS® NS |
Hydrophobic surface treatment |
Extending the service life 2times |
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Rubber for automotive |
Mold |
One-piece molding (Metal & Resin) |
CERTESS® X,XC |
No treatment |
Realizing automatic operation by a good release property. |
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Rubber mold |
PE mold |
PS mold |
