Composition and characteristics of the DLC coating
The coating is largely made up of the chemical element carbon. It consists of an adhesive coat and a carbon coat.
- DLC coating thickness: ~2 μm
- Hardness: ~3,000 HV
- Colour: black grey
- Coefficient of friction against steel: 0.1–0.15
Areas of application of DLC-coated Meusburger standard parts
Guiding elements and locks
Guiding elements and locks in particular are subject to high wear due to friction when opening and closing the mould. The DLC coating offers the best sliding properties and minimises adhesive wear. This ultimately lengthens the intervals between lubrication and leads to a longer mould service life.
Slide systems
Lubrication close to the cavity often leads to grease residues on the plastic part. This can be avoided by using slides with DLC-coated sliding surfaces: they have the best dry-running properties, so that lubrication in these areas can be dispensed with entirely.
Ejectors
Targeted lubrication of ejectors can be quite tedious because of the often limited accessibility. This can lead to a lack of lubrication and ultimately to fretting of the ejectors. DLC-coated ejectors are the ideal way to avoid this, thanks to their excellent dry-running properties and high corrosion resistance. These ejectors also fulfil all requirements for use in cleanrooms.
Demoulding elements
In order to meet the high mechanical demands of the switching elements on latch locks, these are DLC coated. This enables an even longer service life. Due to the DLC-coated sliding elements, the maintenance intervals for lubrication of two-stage ejectors is lengthened from 100,000 strokes to 300,000 strokes.
Our conclusion
DLC-coated standard parts are slightly more expensive, but the investment quickly pays off through higher productivity.
