AD ENGINEERING Co Feed Screw Rebuilding-Extruder Screw Rebuild
CNC Machining-Rebuilding-Colmonoy #56 #83: Nickel-Base-hard-surfacing. Injection molding screw- Extruder screw rebuilding
AD ENGINEERING
Precision Extrusion and Injection Molding Solutions
At AD ENGINEERING, our goal is to provide the most economical way to get the most out of your extrusion or injection molding operation. We specialize in custom screw design and rebuilding worn feed screws, to optimize performance and save you time and money. We Specialize in extruder screw rebuild, feed screw rebuilding, and injection molding screw
Feed Screw Wear
Our Mission
The performance of your plasticating unit is defined by the feed screw’s ability to melt and convey the desired rate and quality of polymer to the die or mold. As the screw flights, channel geometry, and surface treatment wear, performance and quality degrades while energy consumption soars. The overall screw design and material(s) processed has a major impact on the wear-life of the plasticating unit, so it is vital to monitor screw wear and performance, regardless of application. Minor wear will have little effect on the overall performance - as machine parameters can be adjusted to maintain productivity. As the radial clearance gap between the screw and barrel increases, energy costs and cycle times rise while rate and quality plummet. To avoid costly downtime it is important for every company to have a robust maintenance program in place. When screw wear isn't monitored, the overall wear on the screw can become so severe it is no longer economical to rebuild - leaving you with crippling downtime that can ultimately cost more than the components you attempted to salvage.
About AD ENGINEERING
Barrel Repair & Reline
Valves (Screw Tips) for Plastics Processing Equipment
Barrel Repair & Reline
Barrel Repair
We offer the resleeving of both injection and extrusion barrels with bimetallic or tool steel liners.
Press Out a Stuck Feedscrew
If your feedscrew is stuck in your barrel give us a call. We can walk you through the process of what to do next. We offer the service of pressing the screw out and will work with your team on the ne
Barrel Repair
We offer the resleeving of both injection and extrusion barrels with bimetallic or tool steel liners.
Press Out a Stuck Feedscrew
If your feedscrew is stuck in your barrel give us a call. We can walk you through the process of what to do next. We offer the service of pressing the screw out and will work with your team on the next steps to get your line back up and running.
Barrel Reline
Designed to fit the following specifications:
- Tungsten carbide
- Standard bimetallic
- Short relines on feed and/or discharge end can be most economical
- Segmented single and twin barrels
Barrels relining is a standard process in our manufacturing facility so we do not recommend that you throw out a worn barrel until you talk to us. Relined barrels perform equal to or better than the original barrel lining and are dimensionally straight and on size. Relined barrels often present an immediate cost saving over replacing with new.
Our Capabilities
Valves (Screw Tips) for Plastics Processing Equipment
Barrel Repair & Reline
Grinding
A Cincinnati grinder with a service capacity of 30” x 480”, and a Landis grinder with a service capacity of 10” x 250”
Milling / CNC Machining
3 mills able to mill screws up to 480” in length, two NC and one CNC
Welding
A “Stellite Starweld” plasma transferred arc resurfacing system, complete with “NC” lead controls, with a 480” capa
Grinding
A Cincinnati grinder with a service capacity of 30” x 480”, and a Landis grinder with a service capacity of 10” x 250”
Milling / CNC Machining
3 mills able to mill screws up to 480” in length, two NC and one CNC
Welding
A “Stellite Starweld” plasma transferred arc resurfacing system, complete with “NC” lead controls, with a 480” capacity
Straightening
An eighty ton straightening capacity with lengths up to 315”
Polishing
Two polishers, both with a capacity of up to 480”
Valves (Screw Tips) for Plastics Processing Equipment
Valves (Screw Tips) for Plastics Processing Equipment
Valves (Screw Tips) for Plastics Processing Equipment
Many molders treat the check ring (non-return valve) as a simple replacement part - unless major problems arise. Ideally, an injection molding non-return valve’s function is to close after the screw plasticizes a selected amount of resin (shot size) so that this plasticized resin can be forced (injected) into the mold. There are a wide r
Many molders treat the check ring (non-return valve) as a simple replacement part - unless major problems arise. Ideally, an injection molding non-return valve’s function is to close after the screw plasticizes a selected amount of resin (shot size) so that this plasticized resin can be forced (injected) into the mold. There are a wide range of cheap general purpose screw tips available on the market, whether OEM or aftermarket. These popular ball check and "free flow" 3 piece and 4 piece ring check valves all have issues that should be taken into account when choosing the right equipment for your molding operation. With thousands of dollars spent on automation, training, machinery, etc. it is important to not overlook some of the most commonly replaced components, the screw and non-return valve. Relying on general purpose, off-the-shelf designs is an expensive policy to undertake.
Easy To Follow Diagram
