PVC Screw Barrel, Bimetallic Screw Barrel Common to PVC Foam Board Sheet Extruder Parts Screw Barrel 80/156
HUACHEN Screw Barrel Features
1. PVC foam sheet screw barrel. This conical twin screw barrel could be used to extrude low-density PVC foam products, producing a smooth, flat product surface.
2. Conical screw prongs are spray-welded with a bimetallic formula, which increases the screw's service life.
3. Efficacious plasticizing effect, smooth feeding, and reasonable screw structure design. There is a high output and a stable extrusion pressure.
4. A screw's cooling system uses oil, while a barrel's cooling system uses air.
5. CNC-controlled screw milling ensures uniformity across all comparable extrusion equipment by treating the screw completely.
6. Advanced screw barrel design concepts, including variable pitch, variable fit clearance, precise hydrodynamic calculations, and other design concepts, are used in conjunction with real production conditions. Shear, mixing, and compression of PVC foam materials are handled more gently during the screw conveying process.
HUACHEN Screw Barrel Specifications
model
|
|
45/100
|
51/105
|
55/110
|
65/132
|
80/156
|
92/188
|
Screw
length
|
mm
|
1224
|
1183
|
1430
|
1701
|
2116
|
2805
|
Barrel
legnth
|
mm
|
1023
|
1070
|
1230
|
1480
|
1850
|
2520
|
weight
|
kg
|
204
|
196
|
286
|
410
|
775
|
1500
|
HUACHEN screw barrel application scope
1. Conical twin screw extrusion. SZ series, CM series, KMD series.
2. PVC pipe, PVC tube, PVC profiles, PVC board, WPC board, foaming board, SPC flooring board, PE pipe, PE corrugated pipe, resin tiles, PVC granule, PE granule
HUACHEN Screw Barrel Technical Parameter
Material
|
38CrMoAlA
|
Plasma nitriding layer
|
0.6-0.8mm
|
Nitriding time
|
more than 120 hours
|
Surface hardness
|
HV1000-1100
|
Nitrided Brittleness
|
Less than Grade1
|
Surface Roughness
|
Ra
0.4μm
|
Screw Linearity
|
≤0.015mm
|
Alloy surface hardness
|
HRC≥61
|
Alloy deepness
|
2-4mm
|
SKD inner case surface hardness
|
HRC≥62
|
SKD inner case thickness
|
6-10mm
|
HUACHEN Screw Barrel also supply
1. Heaters and fans for screw barrel
2. Big nut for screw barrel
3. Adaptor(join core) for screw barrel
4. Striker plate for screw barrel
5. Gearbox(Separated type, vertical type)
HUACHEN Screw Barrel FAQ
1. What is screw barrel?
The screw barrel is an important part of the extruder. Spiral grooves are usually cut into the outer surface of cylindrical or tapered screws. The barrel structure is generally a through-core cylindrical steel with holes, a segmented structure barrel is connected by a flange.
2. What are the functions of a screw barrel?
Screw and barrel work together, the barrel contains the screw, and the screw rotates in the barrel. When the screw rotates and pushes the plastic material forward in the barrel, the heat is transferred to the plastic inside the barrel by heaters outside, as the screw thread volume gradually reduces, the plastic in the threaded groove is evenly mixed and plasticized by various forces such as extrusion, turning, and shearing, and gradually melts as it moves to the front of the barrel. To ensure the extruder continuously extrudes raw materials to moulding, the screw barrel works together normally.
3. What is the difference between an extruder screw barrel and an injection screw barrel?
Generally, extruders are used for continuous production of products with the same cross section, such as pipes, bars, profiles, etc., by extruding molten plastic through a fixed shape extrusion outlet under the effect of a screw, then cutting and sizing it with traction machines after water cooling. In addition, it can be used to modify plastic by granulating it. Injection molding is the process of injecting molten plastic into a mold, cooling the product and then releasing it. In terms of structure, there is a difference between the two types of machine screws. Extruder screw threads are generally bent and narrow, while injection molding screw barrels allow plastic materials to flow in the mold.
4. What is the average life expectancy of a screw barrel for extruders?
It is possible to replace the screw barrel of the extruder. If you are extruding new materials of high quality, the screw barrel would last longer. A high filling extrusion or recycled material extrusion requires a very high quality screw barrel, and the screw barrel must be replaced when the output decreases after wearing out.
5. Is HUACHEN SCREW a trading company or manufacturer?
China's largest screw barrel producer, HUACHEN SCREW, has been manufacturing screw barrels for a long time. Also, HUACHEN SCREW is a source supplier for many famous machinery and end product companies. With HUACHEN SCREW's own foreign trade department, customers around the world can purchase the original high quality screw barrels at the most competitive price.
6. What is the best way to order your new screw barrel?
Please identify your screw barrel model and provide original assembly data, such as screw diameter, L/D ratio, barrel out diameter and screw spline dimensions, or an accurate drawing. Please indicate the end product you are producing and the filling ratio of the raw material in order to determine the appropriate screw design. You can begin ordering your new screw barrel once you obtain a satisfactory quote.
7. How to find your screw barrel size?
The screw barrel model is generally represented by the outer diameter of the screw threads and the screw L/D ratio for parallel twin screw barrels and extrusion single screw barrels. A screw's L/D ratio, or screw diameter, D, is the outside diameter of its threads. A screw's effective length, L, is the length of its working part. The screw's effective length differs from its total length. The length-to-diameter ratio represents the ratio between the screw's effective length and its diameter. In contrast, the conical twin screw barrel represents the different models by the small and large thread out diameters of the screw head. For an accurate quote, it is important to know the barrel outer diameter.
8. HUACHEN SCREW's quoted price includes how many components?
A complete set of screws and barrels is included in the quotation from HUACHEN SCREW. Separate orders are generally not recommended.
9. What is the processing time for screws and barrels?
It takes 7 days for a Stork model to be ready for delivery. In peak season, lead time is 45 days, in off season, it is 33 days
10. How to transport your new screw barrel?
The shipping method is usually LCL. Shipping methods include LCL by sea, LCL by rail, and LCL by aircraft. Screw barrels of smaller sizes can be shipped by international express. It is possible to make delivery at the factory and ship it to the location where the container will be loaded.
HUACHEN Screw Barrel Contact Person
Ms. Emilie Zhang
Email: emilie@hcscrew.cn / info@hcscrew.cn
Mob / what's up / WeChat: +86 139 6723 6330