What is Roller Burnishing?

Burnishing is a Cold rolling process without actual removal of metal. It is a new concept in finishing the Components. Whereever there is need for accurate size and surface finish, the Burnishing Tool is the one and only solution. Consistency can be acheivable by burnishing. This process eliminates Grinding and honing which are costlier processes.

The surface of metal parts worked thro' turning, reaming or boring operations is a sucession of "PROJECTIONS or PEAKS" and "INDENTATIONS or VALLEY" when microscopically examined. (See Fig.1). The Roller burnishing operation compresses the "Projections (Peaks) into the Indentation (Valleys) thus forming a smooth mirror finished surface (as in Fig.2). Any material not exceeding 40 Rockwell Hardness "C" can be roller burnished.

Surface Before Burnishing

Surface After Burnishing

Burnishing is the cheapest process and High productivity is assured. Rejections will be totally eliminated as you can achieve accurate size as well as super surface finish by doing the burnishing operations

About Burnishing Tools

BRIGHT Roller Burnishing tools generally consists of a series of tapered and highly polished precision rollers made of High Speed Steel or Carbide material, positioned in slots with a retaining cage. The rollers rotate around on an inversely tapered mandrel. The tool or part can be rotated at optimum speed to develope pressure that exceeds the yield of softer work piece to get desired results.

Burnishing tool can be used for the following
1. INNER DIA 2. OUTER DIA 3. TAPER INTERNAL
4. TAPER EXTERNAL 5. PROFILE 6. CIRCULAR FLAT FACE.
Burnishing Tool can be fitted with any rotating device like Lathe, Drilling, C.N.C. Machine and S.P.M's. An unskilled labour can do the burnishing operation.