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PVD Coating Screw
PVD (Physical vapor deposition) is characterized by a process in which the material goes from a condensed phase to a vapor phase and then back to a thin film condensed phase. We are using this technology on our Titanium nitride coated screws.
1
TIAIN / AlTiN
Coating elements: AI, Ti, N Hardness: 3300 HV
Coating thickness: 2-6um Friction coefficient: 0.35-0.40
Practical temperature: 900 ℃ Coating color: purple black, purple red
Applications: Fluomated polymer (PTFE, PVDF), polyarylether (PEEK, PPS, PSU, PES, PPE, PPO)
2
TiCN
Coating elements: Ti, N, C Hardness: 3000 HV
Coating thickness: 2-5 µ m Friction coefficient: 0.35
Applicable temperature: 400 ℃ Coating color: grey
3
ALCrN - ACC
Coating elements: AI, Cr, N Hardness: 3200 HV
Coating thickness: 2-5um Friction coefficient: 0.35
Applicable temperature: 1000 ℃ Coating color: Black Grey
4
TIN
Coating elements: Ti, N Hardness: 2300 HV
Coating thickness: 2-6 µ m Friction coefficient: 0.4
Applicable temperature: 600 ℃ Coating color: golden yellow
Applications: PC PMMA ultra thin light guide plate (LGP)
5
CrN
Coating elements: Cr, N Hardness: 1800 HV
Coating thickness: 2-6 µ m Friction coefficient: 0.35
Applicable temperature: 700 ℃ Coating color: silver grey
Applications: Glass fibre, metals, halogen free flame retardant
6
DLC (Diamond-like Carbon
Coating element: C Hardness: 2200 HV
Coating thickness: 0.5 ~ 3 µ m Friction coefficient: 0.15
Applicable temperature: 350 ℃ Coating color: Black
HVOF (High Velocity Oxygen Fuel) coating process is a kind of thermal spraying technique that melted (or heated) materials are sprayed into the surface. By HVOF technology, alloy powder spraying is under high pressure and high velocity. The adhesive force is over 10000PSI, and the powder density can be achieved up to 99.8%, which offers outstanding performance in wear & corrosion resistance.
Chrome plating (less commonly chromium plating) is a technique of electroplating a thin layer of chromium onto a metal object. The chromed layer can be decorative, provide corrosion resistance, ease cleaning procedures, or increase surface hardness. Such screws are mainly to be used for the corrosive and other free flow material.
Technical Parameters
Product Name: TiN-Coating Screw
Material: JYG3 + TiN
Suitable Machine: Injection / Extrusion / Blowing ...
Available Size: Φ14-80mm, L < 1,800mm
Process Method: PVD Coating
Surface Hardness: 2200-2500HV
Advantages
Physical vapour deposition coating is of high hardness and performance, which provide additional protection against abrasion & corrosion.
Application
Suitable for optical products & abrasive plastics processing.
Parameters of screw coatings
|
COATING TYPE |
COATING METHOD |
COATING THICKNESS |
HARDNESS |
MAX. LENGTH |
APPLICATIONS |
|
TiN |
PVD |
0.002 – 0.003mm |
2000 – 2200 HV |
1900mm |
Optical products & abrasive plastics processing. |
|
Chrome Plate |
Electroplating |
0.02 – 0.08mm |
650 – 720 HV |
6000mm |
Transparent products & corrosive plastics processing. |
|
Tungsten Coating |
HVOF |
1.0 - 1.5mm |
1100 – 1400 HV |
2300mm |
High abrasive plastics processing. |
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Main Product:
Injection Screws,
Injection Barrels,
Extrusion Screws,
Extrusion Barrels,
Tie Bars,
Twin Screw Barrels
