Screw and Barrel Rebuilding
Screw and barrel wear is the enemy of melt quality and performance. SpiraMelt can rebuliding and repair your extrusion screws, injection molding screws, and barrels to like-new condition, saving you time and money! Let the SpiraMelt team work with your company to develop a robust preventative maintenance plan to stay ahead of the wear!
Products & Services
Let's Work Together!
Please feel free to contact us. Our team will get back to you within 1-2 business days. We are excited to work with you on your new screw project!
Return on Investment
Rebuilding Worn Screws and Barrels
Rebuilding and Repairing Feed Screws
Rebuilding and repairing injection molding screws and extrusion screws provides substantial cost savings and extends the life of your expensive equipment for years. It is important for your company to monitor and record wear measurements of your equipment as part of your maintenance protocol to stay ahead of the wear. Our team can assess your equipment either by measurement or by photo to determine if your screws are in reasonable condition to be restored to like-new condition. If your extrusion screw or injection molding screw is beyond repair, our team of expert screw designers will consult with you to design a replacement screw to keep you running successfully!
What to Expect
When your company suspects that your screw and/or barrel is worn, we can send a SpiraMelt field service technician to your company to perform a thorough, detailed inspection of your equipment on-site. Our team of experts will evaluate the overall condition of your screw, such as root wear and damage, OD wear and damage, structural integrity of the base material, etc. A multitude of measurements are taken to determine the severity of the wear and whether your screw is a suitable candidate for screw rebuilding/refurbishment. If your screw can be reliably rebuilt, the SpiraMelt engineering department will assess the detailed inspection report and generate recommendations and pricing/lead times to rebuild your screw to like-new condition.
- Screw flights are repaired and rebuilt to SPI standards to meet or exceed original OEM tolerances
- A variety of PTA hardfacing materials and HVOF thermal spray materials are available to re-establish or improve the original wear resistance of the OD or root
- Broken flights and broken drive ends can be repaired or replaced
- Mixing sections can be repaired, replaced, or added to your existing screw
- Screws can be re-chrome plated, nitrided, carbide encapsulated, etc.
- If it is more economical to replace your worn screw, SpiraMelt screw experts can make recommendations to maximize your production efficiency with new equipment
FREE SPI Screw Standards & Guidelines Download
Please fill out the form submission. You will receive an email with a download link shortly!
Extend Barrel Life
Repair and Reline Your Barrels
Barrel Relining and Repair
In most cases, extrusion barrels and injection molding barrels can be relined, repaired, or honed to re-establish a clean, concentric internal diameter free of rough surfaces. There can be substantial savings in both cost and delivery time with remanufacturing barrels compared to replacing old barrels. Depending on the severity of the wear or damage, only short sections of barrel (typically on the discharge end) need to be re-sleeved. At SpiraMelt, our goal is to keep your machines running efficiently with innovative, economical options. Due to the relative thickness of most bimetallic liners, it is important for your company to monitor overall radial wear on your barrels over time.
What to Expect
When your company suspects that your screw barrel is worn, we can send a SpiraMelt field service technician to your company to perform a thorough, detailed inspection of your equipment on-site. Our team of experts will evaluate the overall condition of your barrel and measure the barrel ID throughout to determine the severity of the wear and whether your barrel is a suitable candidate for barrel relining/refurbishment. If your barrel can be reliably remanufactured, the SpiraMelt engineering department will assess the detailed inspection report and generate recommendations and pricing/lead times to rebuild your barrel to like-new condition.
- The inner wall of the barrel is bored out, removing the existing bimetallic inlay
- A new bimetallic liner is machined, oversized
- Through a special heat-shrinking process, the liner is permanently secured with an interference fit inside the barrel
- Barrel internal diameters are re-established to SPI standards to meet or exceed original OEM tolerances
- If it is more economical to replace your worn barrel, SpiraMelt engineers can make recommendations to maximize your production efficiency with new equipment
FREE SPI Barrel Standards & Guidelines Download
Please fill out the form submission. You will receive an email with a download link shortly!
Things to Consider
Screw and barrel wear is the enemy of melt quality and performance. When worn processing sections are ignored, output and quality gradually drop over time while energy consumption soars. Trust the experts in screw design, manufacturing, and rebuilding with your production.
Worn Screws
- How worn is the screw OD and root?
- What are the wear characteristics?
- Can the existing screw design be significantly improved?
- Can the surface treatment be improved?
- Cost of Repair vs. Replace
Worn Barrels
- How worn is the barrel ID?
- Where is the wear located?
- What caused the damage?
- Cost of Repair vs. Replace
Capabilities and FAQ
If you have any questions about what we can do for you, please feel free to ask! We will answer as quickly as possible.
SpiraMelt specializes in custom, high-performance feed screw design. Our team can design a tailored solution for almost any application. Including – injection molding, profile, sheet, film, foam, reclaim, compounding, 2 & 3 stage vented extrusion, and more. Regardless of the resin(s) being processed, we design to the application requirements. We don’t believe in a one-size-fits-all approach to processing; your business is unique, and you deserve innovative solutions!
SpiraMelt offers a wide range of screw sizes in almost any configuration. We can supply screws ranging from Ø12mm to 450mm (~0.5″ to ~17.75″) with single-piece construction up to 7,000mm (~23 feet) in length. Longer screws can be produced in multiple sections – either threaded or welded together. Big or small, we can accommodate your production needs!
We offer a wide range of bimetallic barrel options for both injection molding and extrusion applications! SpiraMelt offers barrels from Ø14mm+ (~0.5″) with sections up to (19.5 feet). We have a full range of tungsten carbide liner options for even the most abrasive and corrosive applications.
The SpiraMelt Shot-Replicator-Valve family offers best-in-class accuracy and repeatability. We have standard, castellated, mixing, and mixing/castellated options for an injection molding machine. Our valves are designed to last, built with premium, through hardened tool steels, we off valve assemblies ranging from Ø12mm to 250mm (~0.5″ to 9.8″).
If you have a design that you know and love, SpiraMelt is happy to accommodate! We can supply screws, barrels, valves, and other melt stream components made according to your specifications. We are happy to serve you!
We strive for fast and accurate lead times. Sadly, most screw suppliers’ lead times are just empty promises. When SpiraMelt estimates a new project for your business, we are open and transparent with lead times so that your team can reliably plan your production schedule. We work closely with all of our vendors to have the fastest lead times possible. If you are in a bind, talk to us about rush delivery – our team will go the extra mile to save you time!
No problem! If you have worn equipment, the SpiraMelt team is happy to discuss with you the most cost-effective way to move forward. Whether your equipment should be refurbished or replaced, the SpiraMelt team is here to help!
Absolutely! The SpiraMelt team can come to your facility to inspect your screws and barrels for wear, evaluate designs, and make recommendations for improvement. It is ideal to have planned shutdowns for routine maintenance and screw/barrel measurements so that your team can make smart planning and buying decisions. Instead of crippling downtime, you can strategically plan screw and barrel replacements without the hidden costs of lost quality, output, and overall productivity with worn equipment.
Got a Question?
Please fill out the form submission. The SpiraMelt team will get back to you within 24 hours.