Parallel Twin Screw for Foamed Board Parallel Twin Screw for Foamed Board

We provide all kinds of screws for plastic extrusion, injection molding, plastic tubing and so on. The screws are applicable to different types of extruders, such as twin screw extruder, plastic extruder and chemical fiber extruder etc. It has stable extrusion process, high production and perfect quality. We are the leader in plastic machinery over the past years. We can provide high quality products (screw) at competitive price.

Website:www.majormach.com Email:sales@majormach.com



Product Advantages:

Conical twin screw for PVC foamed board can make products with lower density, smooth and flat surface (Advertisement board density can be 0.32)

Unique formula of double alloy spray welding on the surface of the screw can prolong the service life of the screw effectively.

Reasonable structural design, good plasticizing effect, high productivity, stable extrusion.



Product Details:

Conical twin screw is suitable for all kinds of PVC power extruding. It can produce all kinds of PVC plastic pipe material, profiled material, board material, sheet material, bar material, granulation and PE wood plastic.

The screw has applied oil cooling system. Barrel is cooled by wind cooling system. The screw is made by high precision special digital screw miller. Thus ensure each extruder device be exactly the same. The design of the screw has introduced advanced design techniques of variable pitch and variable depth. The materials can be more softly sheared and compressed while transporting along the screw to meet the actual requirement.



Technical Parameters:

Material: high quality alloy steel is selected from international well-known manufacturers, 38CrMoAlA and 42CrMo are sent to medium frequency quenching. 9Cr18MoV are sent to vacuum quenching.

Heat treatment: the raw material is treated by several heat treatment procedures such as quenching, tempering, qualitative,, nitride treatment, etc. to achieve the technical requirements of HB>=280, Nitride hardness (HV)>=980, Nitride thickness between 0.45mm and 0.65mm, Nitride frangibility<=Class 2.

New material: To meet requirements from different customers, new materials, such as: SKD11, SKD61, etc., are sent to vacuum quenching treatment, then twice nitride treatments, thus to achieve higher abrasion performance.

Abrasive performance: Screw surface is spray welded by nickel-based alloy powder or tungsten carbides class alloy powder to improve screw abrasion performance and prolonging its service lif.





Use for pipe extrusion

ModelSJP75/28SJP90/31SJP110/31SJP120/31SJP135/31

Motor power(kw)4575110132160

Screw diameter(mm)7590110120135

Max. rotational speed(rpm)4545454545

L/D ratio28:01:0031:01:00

Space ()0.430.410.390.360.33

Max. production (kg/h)3544636828531109



Use for profile extrusion:

ModelSJP75/28SJP90/28SJP110/28SJP120/26SJP130/26

Motor power(kw)375575110132

Screw diameter(mm)7590110120130

Max. rotational speed(rpm)363635.834.334.3

L/D ratio28:01:0026:01:0026:01:00

Space ()0.440.420.410.380.36

Max. production (kg/h)243382465553686



Use for board & sheet extrusion:

ModelSJP90/23SJP105/23SJP113/23SJP120/23SJP130/23

Motor power(kw)37557590132

Screw diameter(mm)90105113120130

Max. rotational speed(rpm)4545403530

L/D ratio2323232323

Space ()0.440.410.370.360.34

Max. production (kg/h)302405506608805

Material: high quality alloy steel is selected from international well-known manufacturers, 38CrMoAlA and 42CrMo are sent to medium frequency quenching. 9Cr18MoV are sent to vacuum quenching.

Heat treatment: the raw material is treated by several heat treatment procedures such as quenching, tempering, qualitative,, nitride treatment, etc. to achieve the technical requirements of HB>=280, Nitride hardness (HV)>=980, Nitride thickness between 0.45mm and 0.65mm, Nitride frangibility<=Class 2.

New material: To meet requirements from different customers, new materials, such as: SKD11, SKD61, etc., are sent to vacuum quenching treatment, then twice nitride treatments, thus to achieve higher abrasion performance.

Abrasive performance: Screw surface is spray welded by nickel-based alloy powder or tungsten carbides class alloy powder to improve screw abrasion performance and prolonging its service lif.

Website:www.majormach.com



Email:sales@majormach.com