Screws can be selected from ordinary, gradual, mutational, pinned, shielding, separating and exhausting types. The compression ratio of screw can be designed according to different raw materials and requirements of clients.
This company produces the SJZS series cone-shape double screw rodplastic extruding machine, has forces to squeeze out, high grade, thecompatibility broad, the life long, the shear rate small, the materialis not easy to decompose, to mix builds up the plasticizing to be good, the powder material directly takes shape and so on the characteristic, provides the direct current velocity modulation, the temperature automatic control, installment and so on vacuum exhaust. Is suitable to product the and so on tube, board, different shapematerial production.
The bimetallic barrel for single screw is a kind of barrel moulding 2-3mm thick alloy coat on the barrel inner wall which has excellent corrosion resistance, abrasion resistance and high working temperature. And its useful service life is greatly improved contrast to the common nitrided cylinder. Bimetal has more obvious advantages when processing special plastics to enhance the abrasion life, such as engineering plastic, fluorine plastics, PPO and etc.
The company product's single/twin screw, uses special alloy powders being sprayed and welded on the screw's ridge, and uses different alloys and welding methods for the screw of different functions.
Materials:
Quality 38CrMoAlA
Quality power metallurgy raw materials
250~3200KN Mould Clamping Force, 30-25000g Shot Weight
Diameter of screw: ¬ª20~¬+200
Screw can be mated with different heads, and barrel can be mated with different nozzles.
Nitrided Hardness: HV900-1000
Nitrided case depth: 0.45mm-0.7mm
Alloy hardness: HRC50-65
Alloy Depth: 0.8mm-2.0mm
Materials: Quality 38CrMoAlA
Advanced nitriding process
Corrosion&Abrasion resistance bimetal spraying process
Parallel twin-screw and barrel used in extruder
Specifications
PX-45/2~150/2
Lenght/Diameter Ratio:L/D=18~25
The compression ratio of the screw can be designed according to different raw materials and products.
Hardness hardness:HV800-1000
Nitrided Case Depth:0.45mm~0.7mm
Alloy Hardness:HRC 50-65
Alloy Depth:0.8mm~2.0mm
Case hardened, Piercing Point Screws For Fixing To Light Steel or Wood Studs Without Pre-Drilling Zinc, Yellow Zinc, Black & Grey Phosphated Available.bulk or small box packing.corase or fine thread.
Chipboard ScrewsHeat Treated Case Hardened to Prevent Snapping 40 Degree Thread Angle, 25 Degree Point Angle Zinc, Yellow Zinc, Brass or Black Oxide available
PATTA self-drilling Chipboard screws have a coarse thread and fine shank to provide maximum grip and minimum strip out into chipboard, MDF board and soft timbers. The head has ribs molded around the countersunk head which help remove the chipboard particles when countersinking.
How to Use
1. Measure the total thickness of the materials to be fastened.
2. Choose a screw long enough to provide approx. 20mm of thread embedment into the chipboard or wood being fastened to.
3. Fit a #2 Phillips drive bit to a power screwdriver set to low speed, approx. 1000rpm.
Hex washer head
Sheet metal screw with a hex head and a washer attached.
* Zinc plated steel
* Steel is zinc plated for moderate protection against rust.
* Stainless steel 18-8
* Stainless steel 18-8 is an alloy of steel with high corrosion resistance. Stainless has become the material of choice for exterior and most marine applications.
.jpg?format=webp)
.jpg?format=webp)
.jpg?format=webp)
