NASA Tech Briefs

Innovations developed by NASA and its industry partners in a wide array of fields.

Laser Solutions

Cost-effective laser solutions for many manufacturing problems.

Hydraulics & Pneumatics

For design and manufacturing engineers involved in buying or specifying fluid power components and systems.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

more free magazines
Introduction

Burnishing is a process by which a smooth hard tool (using sufficient pressure) is rubbed on the metal surface. This process flattens the high spots by causing plastic flow of the metal.The edges of sheet metal can be smoothed out by pushing the sheet metal through a die that will exert a compressive force to smooth out the blanked edge and the burrs caused by the die break.

Roller Burnishing improves the finish and size of surfaces of revolution such as cylinders and conical surfaces. Both internal and external surfaces can be burnished using an appropriate tool.

Burnishing improves the surface finish, surface hardness, wear-resistance, fatigue and corrosion resistance.