BURNISHING
BURNISHING TOOLS MANUFACTURED BY ELLIOTT TOOL TECHNOLOGIES
Burnishing is the best way to improve a surface finish, enhance part quality, and eliminate costly finishing operations. Eliminate secondary operations, improve surface finish, and save time and money with Elliott burnishing tools.
Our team has worked with thousands of different applications. If you have a question or are wondering if your application is a good fit for burnishing or roller burnishing, contact us here.
BURNISHING TOOL OPTIONS
HOW BURNISHING WORKS
WHAT IS BURNISHING?
Burnishing is a chipless machining method which cold works the metal without cutting or abrading the surface.
It removes no metal but rather compresses, or “irons-out” the peaks of a metal surface into the valleys, generating a dense and uniform surface.
Roller burnishing improves surface finish and results in dimensional accuracy.
COMPRESSIVE FORCES
The cold working condenses the grain structure of metal, producing an increase in surface hardness from 50% to 100%, within a penetration of .010” to .030” on the part’s surface.
In roller burnishing, the material is elastically deformed to a given depth below the surface. The result is compressive stresses at the surface. In turn, this increases the resistance of the material to fatigue failure because any external forces must first overcome these residual stresses.
BURNISHING ADVANTAGES
LOW MICROINCH FINISH
- Produces a 4 to 8 Ra surface finish in one pass.
- Improves surface irregularities and tool marks.
PROCESS IMPROVEMENTS
- Burnishing is a repeatable and consistent process.
- Fast cycle times – measured in seconds, not minutes!
ACCURATE SIZING
- Multi-roll burnishing tools produce accurate sizing in .0001″ increments.
- Roller burnishing in 25% size improvement in steel and up to a 50% improvement in high ductility materials.
LOW COST
- Eliminates secondary machines and set ups.
- Eliminates secondary processes such as grinding, honing and polishing.
- Elliott burnishing tools feature long lasting and replaceable wear parts, reducing total cost over the life of the tool.
VERSATILITY
- Burnishing is effective for many different part configurations.
- Suitable process for a variety of metals – all ductile metals can be burnished!
EASY-TO-USE
- MTG and Elliott burnishing tools require limited training to operate.
- Easy to maintain and repair.
- Common repair parts are always stocked!
PROVEN QUALITY
- The burnishing process has been refined and improved for over 100 years and has a proven record of success.
- Monaghan Tooling Group and Elliott Tool Technologies continue this long tradition by providing the industry’s highest quality burnishing tools.
WORK HARDENING
- Burnishing increases the surface hardness through the cold working process and compressive forces.
- Increases metal’s resistance to fatigue and failure at stress points.
- Produces a dense and uniform surface.
BURNISHING VIDEOS
BURNISHING CASE STUDIES
Case Study: Burnishing a Gearbox Drive Shaft
Summary Of Results 12-14 Ra microinch (0.30 – 0.35Ra) surface finish achieved 30 minutes saved per part Replaced grinding operation with burnishing Huge cost savings
Case Study: Burnishing a Gate Valve Stem
Summary Of Results Replaced grinding with burnishing 30 minutes saved per part 6-8 Ra microinch (0.16-0.20 Ra) achieved THE CHALLENGE A customer of ours was
Case Study: Burnishing High Pressure Tubes
THE CHALLENGE A customer we were working with was manufacturing ST52 carbon steel high-pressure tubes using ECOCA SJ-25B CNC Lathe. The shaft lengths were 36.61”
Case Study: Burnishing a Hydraulic Cylinder
THE CHALLENGE A customer of ours was manufacturing hydraulic cylinders made of 4340 steel, using a Mazak Qualiturn CNC Lathe. The cylinders for this customer
Case Study: Burnishing a Master Cylinder Piston
THE CHALLENGE A customer of ours was manufacturing master cylinder pistons made of 3415 case hardening steel using a Doosan Lynx 220-LSY CNC Lathe. The
Case Study: Burnishing a Shaft Used in the Oil Industry
THE CHALLENGE This customer was manufacturing a shaft used in the oil industry made of Super Duplex stainless steel using a DMG Mori NTX2000 machine.