Barrel materials
 |
The steels used in our barrel materials have been selected to meet the requirements of injection-moulding and extruder applications.
For high-pressure barrels (such as those used in injection-moulding applications) we use our "Reiloy Standard" Cr-V special backing steel, which is produced according to Reiloy chemical and treatment specifications.The diagram on the left indicates the maximum permissible internal pressure for Reiloy Standard barrels of various bore diameters (B) in relation to the outside diameter (D) , at an operating temperature of 350 °C. |
Technical data for bimetallic barrels
HIGHLY WEAR RESISTANT SCREWS BARRELS
Armour alloys for screws
 |
Armour alloys are developed in out in-house materials laboratory. Continuous tough wear tests guarantee a highly effective protection.
●The structural photos on the left show a selection of various armour alloys.
● Click on the plus to enlarge the view. |
 |
Hard-face flight screws
The flight is the area under the most strain in a screw. A specifically applied armour coating protects it highly effectively against wear and corrosion.The armour coating is 1.5 to 3mm thick on average. It is applied in an automated plasma powder PTA welding process. So that the screw root and the flight flanks are protected as well, the entire surface is ion-nitrided.
At greater corrosion exposure the screw root and the flight flanks receive a hard chrome coating. Or an appropriate corrosion-resistant material is used to meet the requirements. |
Technical specifications for hard-face flight screws
Delivery dimensions
Screws: Φ14mm – 70mm
PM-HIP steel rod: Ф25mm – 70mm Herstellungslangen bis zu 4000mm
Delivery from
Srews: completely finished according to the customers drawing PM-HIP steel rods.
Hardened-through screws
 |
Uniway produces its highly wear-resistant screw out of PM-HIP alloys that it has developed itself.
The PM-HIP technology permits higher alloy contents as the conventional melt metallurgy. This gives the screw
made of PH-HIP rod steel a significantly greater resistance to wear than screws made of conventional steels.
Of course we also offer hardened-through screws made of standard materials.
|
Delivery parameters
Delivery dimensions: Ф50mm – 350mm Length max 9000mm
Delivery form: Screw blanks with armouring, pre-ground+0.3mm to nominal dimension.
Screws completely finished according to the customer’s drawing.
Chart Flow and Facilities
