Characterized by its sturdy design and numerous technical features, Rosler Metal Finishing’s drag finishing systems are ideal for high value and sensitive parts such as aerospace components that cannot touch each other during the finishing process.
Equipped with a rotary carousel featuring 2 to 12 spindles to mount the parts, work pieces are “dragged” through the media mass. The rotation of both the carousel and the spindles guarantee an even treatment of the parts. Drag finishing offers a metal removal rate that is up to 40 times higher than conventional vibratory finishing.
To this day, the surface of large structural
aircraft components is frequently finished by hand. This process is not only
costly, but extremely inefficient and hard to replicate with absolute
Rosler Metal Finishing is changing the notion that suitable mechanical finishing equipment is not available for large, structural aerospace components by offering mass finishing technology capable of solving this problem and providing fully automatic finishing of work pieces up to 30 feet long.
We kick off our Aerospace Series with an overview
of the cost-effective and mechanical finishing options Rosler offers for the
Vibratory Tubs Offer a
Thanks to the development of large, powerful vibratory tubs manual deburring and grinding of large aircraft components can now be eliminated. The development of perfectly controlled mechanical finishing systems offers finishing solutions for applications where the biggest rotary vibrator, because of the size of the parts, might still be too small.
While choosing the right implant material is of utmost importance, as discussed in our previous Joint Reconstruction Series post, the significance of optimum surface treatment throughout the entire implant manufacturing process cannot be overstated.
This relates not only to the right surface finish
– be it a high-gloss polish for low friction, a textured surface for easy
osseointegration, or as preparation for subsequent coating, rounded edges, etc.
– but also total compliance with the specified tight dimensional tolerances. The
success of a joint implant is determined by the perfect match between the
various implant components. This depends, to a large extent, on the surface
Joint reconstruction implants allow millions of
individuals to regain mobility and reduce pain. Just as surgical skill is
required to implant these artificial joints, so is skillful construction and
finish of the joint components themselves.
Our Joint Reconstruction Series continues with an
overview of the most common materials used for these endoprosthetic implants.
The most common materials used for joint reconstruction implants are currently titanium and titanium alloys and cobalt-chromium alloys. Both materials are very tough, corrosion-resistant, highly biocompatible, and have proven themselves to be absolutely reliable.
Getting castings and forgings ready for the subsequent processing steps presents some of the toughest surface finishing challenges. Shot blasting machines can handle all of these tasks from removing residual sand, casting shells, flashing, die marks, or scale. Whether cast iron, steel, stainless steel, super alloys, titanium, aluminum, zinc, or magnesium, the comprehensive portfolio of Rosler Metal Finishing blasting systems for the foundry industry enables the optimal process for any requirement.
Shot blasting is an essential part of most forge
and foundry operations and has been used since the late 1800s. This specialized
surface finishing process throws small metal (or mineral) pellets, called blast
media, onto the surface of a work piece at incredibly high speeds, ranging from
200-800 feet per second. The impact on the work pieces from this process is
what blasts the contaminants from the parts and produces the desired surface
When properly applied prior to finishing, blasting
achieves three key aspects of the finishing process:
Cleans and descales
Creates a uniform
texture on the part and blends the surface
Often overlooked in the manufacturing process, mass finishing can help add value in a variety of ways. Mass finishing can reduce or eliminate manual process steps, improve process consistency, increase throughput, reduce manual labor, and more.
Manufacturing or process engineers in a manufacturing plant do not have to be the expert that knows all the latest details and techniques of the finishing process. They do, however, need to have a good understanding of the basic mass finishing processes that can be applied.
Mass finishing describes a surface finishing method where parts are deburred, smoothed, polished, or cleaned using media (tumbling or vibratory), compounds (finishing soap), and specialized equipment.
Understanding how the different process components, i.e. the machine, media, compound, water, and the incoming part all interact and influence the desired part finish is important. Each of the inputs in itself has a multitude of adjustments and parameters.
In order to achieve the lowest total cost of ownership and the greatest process efficiency, recycling process water used in mass finishing processes is key. Reusing water not only reduces costs in the form of less consumables used, but also enables companies to reduce their discharge and disposal fees by replacing process water less often and complying with water and waste regulations.
Waste water from mass finishing applications is often referred to as effluent and must be cleaned for recycling or discharge.
Buying Mass Finishing equipment, as with all investments, can be a bit overwhelming at first. There will surely be a number of suppliers and machine types available to you. In order to ensure you get the best value for your money we recommend you consider the following when purchasing a rotary vibratory machine:
Movement– Appearances can be deceiving, don’t be fooled into thinking all machines are the same just because the look similar. Always test the machine and its processing ability before you buy! Test its amplitude, see how regular the movement is, is it consistently driving the same way?
Strength and durability – Check how heavy the machine is, usually you’ll find something costs less because it is made of cheaper and lighter materials.
When maintained properly, mass finishing equipment can be very user friendly.
As a result sometimes operators can get into the habit of just turning them on each day and ignoring simple operating and maintenance rules. Avoiding the following 9 mistakes that operators commonly make will help you get the most from your equipment:
They let the media level drop, often with the aim of saving money or so they can get more work pieces in. This changes the ratio of work pieces per media though and can affect process times, unloading ability, can cause components to damage each other, and can result in the required finish not being achievable.