As experts in surface treatment, Suhner is pleased to provide users with its indepth knowledge on polishing stainless steel workpieces through their special applications brochure and their free onsite consultations and demo services.
Polishing stainless steel workpieces is costly and exhausting depending on the demanded surface quality. Excellent results at lower costs can be obtained with the correct combination of abrasive and machine - and of course the right know how.
Reasons for polishing stainless steel surfaces can range from visual appeal to hygiene, for example, machines in canteen kitchens or appliances for manufacturing medicines. Stainless steel surfaces of this kind require particular attention before work even starts if the end result is not only to be a mirror finish but also fall within the roughness tolerances.
The initial steps of polishing stainless steel should not begin with overly coarse abrasives. The first grinding operation should therefore not use a grain size exceeding 60. If the workpiece shape allows this, grinding in a crosswise fashion facilitates subsequent polishing.
In the following steps it is important that successively finer grain sizes are used if they are to remove the grinding marks left by the previous grain completely. Depending on the abrasive used - normal grain or 311 Trizact abrasives - this process should continue down to a grain size of 600.
If a glossy surface is needed primarily for decorative purposes, the difference between grain sizes between grinding operations can be a little larger.
After rough grinding the required surface is generated in a three stage polishing process consisting of prepolishing, polishing, and finishing. Due to the polishing process not involving the actual removal of material, one important ancillary is a polishing paste with the suitable polishing wheel and the correct speed.
Equally as important is the application of a powerful drive motor. Flexible shaft machines are ideal for these applications because then the powerful, heavy drive unit is isolated from the actual tool, therefore making the work easier and far less fatiguing.
Suhner specialists provide onsite stainless steel polishing consultations free of charge as part of its demo services. The demo vehicles assigned to the Suhner specialists have all the customary machines, tools, and abrasives on board. End-to-end solutions can be realised on actual workpieces, that pay off for the user in the form of technical and economical advantages.