Injection Screw Tips
Don't throw away an old injection molding screw tip just because all the chrome has been burnt off! We can offer injection screw tip repair with a six month warranty and save you over 50% from buying new. All of our injection screw tip repair comes with a 3, 6 or 9 month warranty. Better than what you'll get from the OEM or any other repair company.
All of our injection screw tip assembly repairs are done to exceed OEM specs/tolerances for plating thickness, porosity, polish finish etc. Your repaired injection screw tip will out perform and even outlast a brand new screw tip from the factory.
Mitchell Precision has an advantage over other repair companies. All CNC machining, OD grinding, hard chrome plating, electroless nickel, thermal spray, polishing, buffing etc. Is done in house by our employees. No subcontractors means lower pricing and faster delivery. We can repair your screw tip faster than any other company with complete ability to repair all injection molding equipment used in your plant.
How long does injection screw tip repair take?
If it requires stripping and welding, 7 to 10 days. If it does not require stripping or welding, it can be done in 3 to 5 days.
Injection screw tip repair procedure:
1: Strip all old chrome
2: Inspect surface for any deep pits or scars, check with dye penetrant for any pits, cracks and repair as needed.
3: Weld blemishes or damage and blend in 100% using high speed air tools or belt sanding
4: Belt sand and polish to a 5rms mirror finish
5: Chrome plate or electroless nickel plate tip Military Spec QQC-320B & Military Spec Mil-C-26074B Class A Grade 1
5A: For harsh environments or for the longest lasting coating available, consider CEB coatings. (Chrome over Electroless nickel, Baked at 475 for 3 to 5 hours). We’ll give a one year warranty with CEB coatings regardless if you’re running, regrind, glass, PVC or other harsh materials.
6: Inspect all plating to be free of pits, zits, imperfections, etc.
7: Final buff and polish to 3RMS finish or better
8: Prep for packaging and UPS/FedEx delivery
Injection screw tip repair for longer life! Industrial hard chrome is the standard coating for all injection screw tips. Yet harsh plastics like PVC, glass, regrind, will give off a gas of muriatic acid which is exactly what we use to strip chrome off of any part (50/50 muriatic acid and water). Electroless nickel plating, baked on at 475 for 3 to 4 hours is actually harder than chrome and is not harmed by muriatic acid, PVC, glass, etc. We can also provide PVD (Physical Vapor Deposition) coatings that are much more durable than chrome or nickel. The best coating provided is CEB (Chrome over Electroless nickel Bake), this comes with a better warranty.
Does injection molding tip repair come with a warranty? Yes, 6, 12 and 18 months depending on the coating you choose (chrome or nickel) and the material you are running.
Please click the links and feel free to call us with any questions. You'll speak directly to a plastics processing technician who can give you an estimate on cost right over the phone. Nationwide same day pickup is available on any size project!
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