Mahira Poly Global is a screw barrel manufacturer and exporter of wide ranges like extrusion single & twin parallel screw and barrel, vented & injection moulding screw and barrel, bimetallic & SS screw and barrel etc. It is an internal equipment of plastic processing machinery by which machine production process run smoothly. We are in-house screw barrel manufacturer & our in-house quality professional team regularly test every screw and barrel with our modern testing equipment to deliver perfect product to customers.
Screw and Barrel playing important role in improving the performance, functionality of the machines for which every application you are using. And because of vast knowledge and experience in this industry we are using advance equipment to develop such Extruder Screw Barrels which will give you more output and very less maintenance, finally you are getting long lasting screw & barrels. Mahira Polyglobal believes in extra perfection that's why our team nonstop working on quality and you will find our screw & barrels are very good corrosion, abrasion and wear resistance features. If you want to increase life cycle of both you must need to get it well cleaned and there are two method of doing this, either by totally remove all the parts or by compound purging. First method may be little bit costly than second one. First method will take day or more while second option can be done in few hours, so your engineer can be the best person to decide which method is required according to your machine and it’s usage. Along with cleaning you need to more careful on installation process too, first it is to be ensure that dimensions are accurate as per your machine, extruder alignment is perfect, check all the handling equipment, push screw tightly, check the position & make sure engineer have enough space to work around the site.
We have various types of extruder screw barrels which can be used in Pellet extruder, blown film extrusion, granulating machine, plastic extrusion like sheet extrusion and laminating, food & rubber industries etc. We manufacture screw and barrel in various materials like LDPE, HDPE, PVC, PP as per the requirement of clients.
What is Extruder Screw Barrels?
The extruder is indeed a piece of equipment made up of mechanic and electronic units that are coupled. A screw, or core of an extruder, is situated inside this complex of mechanical systems. These interconnected parts support the core. The extruder controls, like our brain, uses inputs from its several parts to inform the remainder of an extruder what else to do. The extruder motors and gearing were similar to human legs and arms in that they assist us in getting tasks performed. That neither of these body processes, although, would be possible without the need of a core. Without the screw, the extruder would be unable to fulfill its goal of turning rigid plastic into such a flowable mass.
Extruder screw Barrels design characteristic :-
The specifications and design aspects of extruder screws barrels, which have been the mechanism through which materials gets carried throughout extrusion, are as follows:
-> Axial holes may be required for (water or oil) thermoregulation.
Extruder screws barrels have three major zones with their most basic configuration: a cylindrical feeding zone, a melting or conical compression zone (with a fixed compression ratio), and then a cylindrical metering zone (end of the screw). They may even have barrier flights or mixing zones after that.
Screws and barrels are subjected to three different types of wear
Knowing which kind is present on your machinery would enable you to take the appropriate necessary action, whether for a current barrel or screw or when buying newer or replacing parts.
Abrasive Wear -
Surface damage induced by fillers, including talc, calcium carbonate, glass fibers, and perhaps even titanium dioxide tints, is abrasive wear (used in white plastics). With each touch, such granules remove a small amount of metal from such a screw or barrel. Glass fibers abrasion the screw's roots just at the forefront, commonly in the transition or compressing section, when the fibers have indeed been released by certain melting. Also, the partly molten pellet was pushed against by the screw and barrel. Hard elements that are put to the screw and barrel could aid in minimizing such wearing.
Adhesive wear -
Galling is indeed a condition produced by metal-to-metal interaction. When enough friction overheating occurs, specific metals could "weld" to one another, pushing away as the screw rotates. You could avoid a form of wear with correct clearance and alignment, appropriate components, and toughness.
Corrosive Wear -
Whenever a resin is heated and a corrosive chemical is discharged, it typically causes chemical attacks upon screw and barrel surfaces. One of the most typical occurrences is indeed the emission of hydrochloric acid as PVC degrades. ABS, polycarbonate, cellulosic, polysulfones, fiber scaling agents, and flame-retardant compounds were some of the various resins which can emit corrosive chemicals. Avoiding heating seems to be the easiest way to prevent such issues; don't leave the equipment running at full speed for extended periods. Screw and barrel components that are corrosion-resistant must be chosen.
Factors that influence wear :-
-> Alignment of the screw, barrel, and drive
-> Screw and barrel straightness
-> Screwed up Design
-> Heating uniformity in the barrel
-> Material is currently being processed
-> Fillers that are abrasive, reinforcing agents, and pigments
-> Materials for the screw surface and barrel liner
-> Wear on the screw surface and the barrel
-> The barrel is being supported incorrectly
-> Excessive loads at the discharge end of the barrel
-> Excessive backpressure throughout the healing process
-> High screw revolutions per minute
Mahira Polyglobal have huge rage of various designs and specification of screw and barrel that will help you to select the best one according to your requirement. If you are planning to buy extrusion machine screw & barrel then Mahira Polyglobal will be the best option for you as we believe in extra perfection.
Extruder Machine Screw Barrel Features
Durable& Easy to install
Robustness & Rust
Standard & Customized
Treatment & Wear Resistance
Quality & Good Performance
Mahira Polyglobal screw barrel manufacturer as per vast experience in manufacturing shared above features.