Ideal for plastics unfilled such as PE, PP, PS, ABS ...
Nitriding is a surface treatment of a depth of 0.3 to 0.7 mm depending on the steel used and treatment times.
The surface hardness reached is between 850 and 1100 HV (Vickers)
This is the best solution for a low budget.

These screws are adapted to plastics filled with up to 30% glass fibers.
These screws are made of alloy steel. In the thread crest, we add an alloy by plasma process transfers (PTA). After deposition, these screws are nitrided.
Depending on your conversion process, we can provide the following alloys:

         - Stellite grade 6
         - Stellite grade 12
         - Colmonoy 56
         - Iron Base 60 Hrc
         - Tungsten carbide

For plastics highly loaded with more than 30% fiberglass.
These screws provide very high-end solutions to solve the lasting problems for tooling subject to combined wear problems (abrasion, corrosion, heat, pressure, adhesion, oxidation etc. ...)

In addition to these four lines, we have, to target most of your needs, the following coatings:

- Chrome-electrolytic: Hard Chrome 1400 Hv 0.05 mm thickness for corrosive materials such as PVC.

- Nitride-Chromium: Chromium vacuum deposited 1800 Hv 0.003 mm thickness. Deposition of high performance, excellent resistance against corrosion. Not sensitive to shocks such as chromium electroplating. Nonstick property recognized and tested by many customers.

- CLD-coating: HV 2200 multilayer coating thickness 0.002 mm. Very good resistance to abrasion and corrosion with a very low coefficient of friction (0.1).

- HVOF-coating: Coating thickness 0.2 mm carbide. Plastics filled with more than 30% fiberglass.

These barrels are made of the same nitrided steel screws suitable for unfilled plastics.

Barrels high performance, depending on your conversion process, four different alloys :

     1 - Plastic filled with up to 15% glass fiber

     2 - Plastic filled with up to 15% to 30% glass fiber

    3 - Cylinders bimetallic tungsten carbide, plastic loaded with more than 30% glass fiber

    4 - To specifically corrosive plastics (PTFE ...)