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Pancéřované

Pancéřované

PRODUCTION OF ARMOURED SCREWS

 

Fields of application:

Recommended use:

Extrusion of plastic profiles, plastic injection, rubber production, food production etc.

Suitable for demanding processes where requirements for wear resistence are higher, ie for manufacturing different kinds of plastics with defined mainly abrasive additives. Suitable for machines producing recyclates.

Unsuitable for processes where materials filled with an abrasive element such as more than 15% glass fiber are processed. 

Surface treatment: Gas nitration (more efficient nitriding method than ionic or powder nitration)
Used materials:              

We strictly use only certified nitrided steel from the most known European suppliers. Nitrided steel 1.8550 (34 CrAlNi7), alternatively ….

Production range:

From Ø 25 to Ø 750 mm x to the lenght of 6000 mm (in one part).

Parametres of nitrided layer Thickness 0,6 mm, toughness ~ 950 HV.
Production time: Within 4 weeks depending on the complexity of the part
Nitration process:

The principle of nitriding process is based on penetration of atomic nitrogen into the peripheral steel layer with the tempterature of 550°C and it  causes increasing the peripheral toughness by formation of nitrides and by depositing the nitrided atom in areas between grids which causes grid tension. The peripheral zone consisting of a diffuse zone and an interface layer has high toughness, good wear resistence, increased fatigue limit and increased corrosion resistence.

Technical parametres

Kind od production: ARMOURED
Diameter (from-to): Ø 25 - 750 mm
Length (max.): 6000 mm
Layer thickness: 1,5 - 2,5 mm
Technological procedure:

When nitriding the screw just partly according to the below selection the unarmoured areas are nitrided.

The ways of welding armoured layers when producing new screws:

výroba šneků, šneky, nitridace šneků, kalení výroba šneků, šneky, nitridace šneků, kalení výroba šneků, šneky, nitridace šneků, kalení
armouring the screw top

armouring the top and compression edge of the screw

armouring the whole screw surface

výroba šneků, šneky, nitridace šneků, kalení

výroba šneků, šneky, nitridace šneků, kalení

 dsc_0013_s  dsc_0034
výroba šneků, šneky, nitridace šneků, kalení výroba šneků, šneky, nitridace šneků, kalení