Equipment goods

Planetary screw and barrel

Planetary screw barrel/ Planetary screw and barrel for plastic extrusion

Specification:

Diameter: Ø15500

L/D ratio: 5: 1

We can manufacture all types of screws and barrels according to clients' requirement.

Base Materials:

1)38CrMoAlA(JIS SACM 645)

2)42CrMo(AISI 4140)

Bimetallic Alloy Materials:

1)Fe-based alloy

2)Ni-based alloy

3)Co-based alloy

4)Tungsten carbide

Processing Technology:

Heat treatment

Nitriding treatment

Technical Parameter:

Nitrided layer depth: 0.50-0.80mm

Nitrided hardness: 900-1100HV

Nitrided brittleness: Less than 2 level

Surface roughness: Ra 0.4

Linearity of screw: 0.015mm

Planetary screw extruder

The extrusion system can be separate for two sections. First section is normal screw (scr ew diameter equal to barrel inter diameter), and second section is planetary screw which general contains 7~ 18 pieces small screws and a main screw in the centre, the number of small screws depend on the screw diameter and application. These small scre ws is intermeshing with main screw and interior screw in the barrel inner wall.

Planetary screw barrel/ Palanetay screw and barrel for plastic extrusion

The characteristics of planetary compared with normal screw:

1.No dead angle in the flow channel, have good self-cleaning performance. It's better for processing Rigid PVC.

2.As there are many small screws, the screw intermeshing frequency is higher, this function is proportional to the screw rotate speed, so it can largely increase the times of kneading, extrusion, cutting and mixing.

3.Basis on the same extrusion output, the materials is shorter stay in the planetary scre w extruder.

4.Energy saving.

The planetary screw barrel is mainly used for heat sensitive materials, such as processing rigid PVC. In the calender production line of PVC transparent chip, adopt planetary screw barrel to plastify and mixing raw materials for calender. It can make all melting materials, accessory ingredient and modifier uniformly mixing and dispersing.

Location : , 510800 Jintang,
Contact : lucy qiu, 0086 574 87201117

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Planetary screw and barrel

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