Our manufacturing expertise begins with our engineering experts working with you to design the new screws, barrels or components that meet your exact requirements. This can be described as absolutely vital.
Properly engineered flight profiles on your injection molding screw or extruder screw not only optimize processing, but can reduce the effects of wear on screw/barrel components. We are continually researching new screw and barrel materials that would best fit our customer’s needs in providing high wear resistance against abrasive, corrosive and adhesive wear. Optimizing performance improves processing and will extending the life of the screw and the barrel. Improved output, better mixing, and critical melt quality can all be achieved through proper screw design. Crystaline and amorphous material process differently so the designs are different for each. Different barrier screw designs and various mixers are available from GEM and are selected to achieve desired outcomes. Our engineers work with our customers to provide the best possible design based on customer requirements, including documented inspections, complete upsize, downsize and thermoset conversions.
Why Design Services Matter
A screw manufacturing company that offers screw design services can be a valuable resource. With years of experience and specific manufacturing knowledge a screw designer can provide recommendations that improve efficiency and performance. A screw design can pay huge dividends.
Performance Driven Screw Design
The type of material you are processing and your desired production rate are key performance considerations. Whether it is adjusting material flow rates, controlling mixes or temperatures we have the knowledge to make effective and smart recommendations. If you can define what you need to achieve we can design and manufacture a new screw that meets the requirements.
Application Considerations
Screw design must focus on mixing, pumping, melting and conveying tasks. Application specific elements that affect output include:
3 zones: feed zone, transition zone and metering zone
screw total length, channel depth, helix angle, flight length, flight clearance, flight width, pitch/lead (spacing), screw O.D., barrel size, nozzle & screw tip design, volumetric feeding, continuous feeding, wear and durability, temperatures control, steel base material and surface finishes, material to be processed, etc.
Material Selection Considerations
When designing a new screw or barrel, you have the opportunity to select the screw steel and finishes that will provide optimal wear resistance and longevity. We have a wide variety of base materials, hard surfacings, platings, coatings and heat treatments to choose from for your new screw. Our screw design experts can introduce material and finish options including explaining the advantages offered by each of these.