Tumbling media are materials that are used in the finishing process. They are loaded with parts to be finished into finishing machines, with or without tumbling compounds. They help in cleaning, smoothing and deburring of parts. Tumbling media can be man made or natural. Man made media include plastic media, synthetic media and ceramic media which come in preformed shapes. Natural media include walnut shell media and corn cob media. Tumbling media are used in finishing machines like tumbling barrels, vibratory machines and centrifugal machines.

Plastic media are otherwise known as tumbling stones. They come in shapes like cones, pyramids and triangles and have varying abrasive properties. They create smooth but dull finishes on surfaces and because of their light weight are suited for use on parts that might get damaged easily. They are safe on threaded parts and can be used on parts as a pre cursor to anodizing. The cone shaped plastic media act well on parts with holes and triangle shape acts well on edges and flat surfaces. Multiple shapes can be used on parts with complex designs.

Ceramic tumbling media are made of silica, minerals and abrasives mixed in different proportions and processed at high temperatures to produce hardened shapes. They are good for aggressive finishing needs and work well with hard metal parts. They suit usage with heavy loads that cannot be handled by plastics; they also come in smaller sizes and hence are suited for smaller parts. Synthetic tumbling media also come in different shapes; they weigh lesser compared to ceramic media. They are cost effective and are good to provide ultra smooth finishes. Compared to plastic media, they take more wear and tear and residue left from processing is lesser. They are ideal for use in high energy machines like centrifugal barrels.

Tumbling compounds are chemicals used to increase the effectiveness of media by ensuring that glaze is not formed on the parts during the finishing process. They act as abrasive agents and help in maintaining a nice color to the metal parts. They impart anti rust and anti corrosion properties to the parts when the right agents are added to them; they are effective cleaning agents and help in deburring by suspending debris and preventing them from getting re-deposited on the parts. The compounds are either alkaline or acidic in nature depending on the media they are used with.

The flow rate of the tumbling compounds should be matched with the volume of media being used for a good finish. Tumbling compounds are known to help in degreasing, descaling and removing grime. They help in lubrication of parts to protect them. They help in grinding, polishing and brightening of surfaces. They help to finish delicate parts by providing a cushioning effect and preventing damage to the parts. Acidic tumbling compounds enhance cutting speeds and bleaching efficiency. When used in proper combination with finishing media, tumbling compounds help to reduce cycle times substantially. To learn about the advantages of tumbling media and tumbling compounds, go to http://gravcollc.com/

Cleaning, polishing, smoothing and deburring of parts are all referred to as finishing. The primary types of machines used in the finishing process are the tumbling barrel machines and the vibratory machines. Finishing media are materials that are used with the parts to aid in the process of finishing. Finishing compounds also assist in the finishing process. One or all of the finishing media, water and finishing compounds are thrown together with the parts to be finished into a finishing system. The machines cause a sliding or tumbling action to take place between the parts or between the parts and the finishing media which in turn leads to cleaning, polishing and smoothing of the part surfaces.

Finishing compounds could be wet or dry. Wet compounds are used in the form of paste or with water in wet finishing processes while dry compounds are used in the form of powder in a dry finishing process. These compounds are formulated with specific properties for use in tumbling barrels or vibratory systems. The compounds that are specifically made for vibratory machines are called vibratory compounds. A vibratory machine is typically used for thorough cleaning and deburring of delicate parts or parts with hard to reach recesses like bores. They are also used on large surfaces. Vibratory compounds along with selected finishing media are added on to the vibratory machine in which parts have been placed for mass finishing. The rubbing action causes abrasive results on the parts effectively cleaning them. The vibratory compounds have suspension properties that ensure the abrasive action happens continuously by keeping the debris that arises, from depositing back on the parts.

Plastic deburring media are synthetic contraptions that are made into pre formed shapes; they are referred to as tumbling stones sometimes. The various shapes include cones, cylinders, pins, triangles, pyramids, wedges etc. Each of these shapes comes in handy depending on the deburring requirement on hand. For instance, cylindrical plastic deburring media might be recommended for cleaning long tube parts. Cones are valuable on parts containing holes while triangles are good on flat surfaces and corners. A combination of shapes can be used too, for complex requirements. Compared to ceramic media, plastic media are less aggressive though they are able to produce better finish on surfaces. As they are lighter than ceramics, they are ideal for use on parts that are apt to break with ceramic media.

Plastic deburring media is very effective for metal removal, polishing, cutting of parts from runners and pre-painted finishing. They are used for aluminium and brass that are soft metals and are helpful in preventing the broken burrs from lodging in holes in the parts. They can be safely used on parts with threads as the threads are left untouched by them. Parts to be anodized can be finished with plastic deburring media to ensure an efficient anodizing. They are useful to provide a smooth but dull finish. To understand vibratory compounds and plastic deburring media better and to learn about the different types available in the market, please visit http://gravcollc.com/

Parts that are manufactured usually need removing of jagged edges, cleaning and polishing before they are fit to satisfy their functionality (the function for which they are being built). This is achieved by means of a process called finishing. Mass finishing is several parts being finished all together. It is typically carried out in finishing machines or systems like tumbling machines, vibratory machines, blasters, centrifugal machines etc. Parts are fed into these machines along with finishing media, finishing compounds and water. The parts and the finishing media scrub against each other, with the compounds aiding in removing the debris and keeping it from re-depositing on the parts. Due to this scrubbing action, mass finishing takes place - edges are smoothed, surfaces get polished, nooks get cleaned and parts get broken from runners.

Finishing media are materials that aid in the mass finishing process. There are many types of media like synthetic pre formed plastic media, ceramic media and natural media like corn cob and walnut shell media. Finishing compounds could be dry or wet and depending on the action required, their composition varies. This determines their abrasive action, alkalinity etc. Mass finishing process can take place as a batch process, as a series of steps or as continuous process. In a batch process, parts are loaded as a batch and after finishing, the batch is unloaded. The next batch now goes in and so on. In the step by step process, the parts are taken through a sequence of processes, one by one. After every step, the parts will have some degree of finishing done on them and after the final step, they will be fully ready. In a continuous process, the loading and unloading of parts happens continuously, while the finishing process is carried out.

Walnut shell media are made from treated and crushed walnuts. As they are natural, they are bio degradable and safe for the environment. They are dry finishing media whose grain size is determined by the weight and composition of the parts being finished. They are very good cleaners too apart from being good polishers. They are suited for use with tumble machines and useful in finishing of parts made from soft metals like brass, aluminium and bronze. Mixed with paints, they act as anti skid agents and are typically used in paints used around swimming pools and pathways. Oil well drilling is another area where they are used, to prevent the oil from stagnating.

Walnut shells have the properties of hardness and fibre. They are also naturally angular and multi faceted, which makes the walnut shell media ideal for deburring. They last long and can be reused many times over. Used in tumbling and in some vibrating systems, they help to reduce cycle times. They can be used on delicate surfaces because they do not have a rough abrasive action. So, they do not damage micro finishes. There are companies who have been in the finishing business for a long time; they can find finishing solutions for any needs. To learn more visit http://gravcollc.com/

Finishing is a term used to define the process of cleaning, polishing, deburring, coloring, separating and smoothing of parts or components, generally metals. Finishing compounds are compounds used in the process of finishing - they are defined as substances or materials that are used to give surface properties like softness, smoothness, flexibility, resistance to fire, resistance to corrosion, resistance to rusting and so on - to metal parts, wood, textile, leather etc. It is possible to impart a high quality to a finished product with finishing compounds so that the product comes out with the correct functionality, fit and aesthetics.

Mass finishing compounds are used to finish several parts together using machines like tumbling barrels or vibratory systems. The compounds are used to aid in deburring, descaling, polishing of ferrous and non ferrous materials etc. The typical mass finishing process involves putting the parts together with finishing media, water and finishing compounds into a barrel or vibratory machine and allowing them to vibrate or tumble together. As a result, the parts rub against each other or with the finishing media; the rough edges are smoothed out, debris and deposits are cleaned out and specific surface properties are imparted to the parts.

The finishing compounds can be used in closed loop and open loop finishing processes, which involves automatic or manual feeding of finishing media and compounds respectively. There are compounds that are made for wet use and those made for dry use. Compounds are also available for specific use with tumbling systems and those that work well with vibratory systems. There are some special properties given to the finishing compounds when they are manufactured. For example, deburring compounds are made to keep the deburring debris suspended during the finishing process to ensure that there is no re depositing. This way the surfaces are continuously kept ready to accept the abrasive action. Descaling compounds have properties needed to remove scales and assist the finishing media in descaling. Compounds used for polishing are made to provide conditioning to water, detergency, impart rinseability and brightening plus suspension properties to make sure that the debris is kept at bay.

Finishing media are used in the finishing process to clean, polish and deburr. Corn cob media comes under the head of dry finishing media. It is made from treating and powdering of corn cobs to provide abrasive action on parts being finished. As they are made from natural products, corn cob media is bio degradable and environment friendly. It is long lasting and reusable; it is also cost effective. It can be used in both vibratory and tumbling systems. The grit size of the corn cob media is determined by the finishing requirement – it varies depending on whether the finishing process needs to be gentle or rough, the nature of the surface being deburred etc. The corn cob media has very good absorbing properties and can absorb both water and oily substances with ease; proves very effective in degreasing and cleaning parts. To gain further insights into finishing products, log on to http://gravcollc.com/

Finishing machines are used for the finishing process that is carried out on parts for the purposes of cleaning, deburring, polishing and separation of parts. There are many types of finishing machines. The two important and widely used ones are the tumbling barrel machines and the vibratory finishing machines. In the tumbling variety, a huge barrel holds the parts and finishing media, compounds and water. In the vibratory finishing machines, there are usually tubs or bowls that undergo a shaking action at a particular speed. The shaking action is caused by a shaft that is attached to the tub or bowl.

The vibratory finishing machines come as large floor models (that can be fixed to the floor) or as smaller bench models (that are fixed on tables or benches). When the machine shakes at a high rate of speed, it causes the parts and the media to rub against each other thus resulting in cleaning and polishing. Using the vibrating machines, it is possible to get a very precise cutting of burrs and parts. They are also very effective in removing debris and dirt lodged in nooks and crannies, like a bore for instance. This sort of cleaning is not possible in a tumbling barrel. Vibratory finishing machines are ideally suited for use on delicate and intricate parts; also for large and bulky surfaces like wing spans - because they have high speeds combined with very short strokes. This provides powerful finishing but at the same time places very less stress on the parts. Vibratory finishing machines can be automated or semi automated quite easily and are good for continuous or batch processing.

Finishing or deburring media are materials that provide an abrasive action on parts to aid in the finishing process. They can be natural or man made. They come in different shapes and sizes depending on the requirements. When media is used in finishing machines, they accomplish finishing tasks like cleaning of oils, grease, dirt, grime etc and deburring of jagged edges or removing extra material from parts. Natural deburring media like walnut shells and corn cob media are made from naturally available material – they are non toxic, environment friendly, reusable and cost effective.

Man made deburring media like ceramic media and plastic deburring media are used for heavy and aggressive finishing. They come in different shapes and sizes. Some of the standard shapes found in the deburring media are cones, cylinders, pyramids, three headed stars, triangles etc. These shapes aid in polishing and cleaning hard to reach recesses in the parts. Depending on the shape and size of the holes in the parts, the shape of the media is chosen. If the part has a complex design with many corners having different shapes, then a combination of media shapes can be used to achieve uniform finish in the parts. Companies having a vast experience in the finishing industry generally have the expertise to find tailor made solutions to any deburring requirements. To gather further information, please log on to http://gravcollc.com/

Deburring machines are better known as finishing machines. Their purpose is to finish parts – by facilitating polishing, cleaning, separating and deburring actions. There are two important types of mass finishing deburring machines – tumbling barrel machines and the vibratory machines. In all the deburring machines, the parts are loaded along with finishing deburring media, finishing compounds and/ or water. Deburring media include ceramic media and plastic media that are man made and corn cob media and walnut shell media that are natural. Finishing compounds come as wet or dry compounds. Their composition varies depending on the abrasive action that is needed, inhibition action (like anti corrosion, anti rust) and the suspension properties needed. The compounds help to suspend the debris that comes out during the finishing process in deburring machines. This prevents the debris from getting deposited or lodged back into the parts.

Vibratory deburring machines involve a tub or a bowl that is shaken at high speeds which causes the parts and the finishing media to scrape against each other in a filing kind of motion. In a vibratory machine, the sliding action happens on all of the load with a single vibration; there fore cycle times are very less compared to tumbling barrels. They are high speed, short stroke machines and hence are good for delicate parts as well as large surfaces. They are very useful as separators of parts. The loading and unloading of vibratory machines is very simple. There are also other types of deburring machines like centrifugal machines, blasting machines and spinning machines that are used in special cases. In the blasting deburring machines, some media are blasted on to parts to deburr them.

In a tumbling machine, tumbling barrels are present to hold the parts and the finishing media and compounds. They are available as floor (large) and bench (small) models. The parts and the finishing media are lifted from the barrel’s corners by the movement of the machine and they bump and slide against each other. The media that is used in barrel tumbling depends on the roughness of the finishing that is required, the nature of the parts being tumbled and whether polishing or deburring is the prime requirement.

In barrel tumbling, parts can be used without using any media too in special cases. Usually, barrel tumbling is used for wet processing but in some cases where there is a need, dry finishing can also be done using them. Wet barrel finishing is intended for processing metals. They can be used for removing burrs, polishing and improving surface appearance. A dry barrel system gives a finish that is smoother and more uniform than a wet finishing barrel. In factories where there is not much water, dry barrelling is the ideal option. Tumbling barrels are ideal for heavy loads; they function optimally when they are 50 % loaded. Screen doors can be added to barrels for use in separating parts. For more details on the different kinds of deburring machines available from finishing industry experts, go to http://gravcollc.com/

Ceramic media are materials used in the finishing process to aid in deburring, polishing, separating and cleaning of parts. They can be used for light as well as heavy deburring, fast deburring and rough metal removal. They are best suited for hard metals heavy cutting requirements. When small sized media are needed (around three fourth of an inch size), ceramic media has the best options. They can be used even for very heavy metal parts effectively. They are made out in different shapes like angle cut cylinders and triangles, cones, straight cut triangles, cylindrical wedges and angle cut tristars and ellipses.

Ceramic media are long lasting, cheap and can be put to multiple uses. They are manufactured in a variety of shapes that are precise and which prove very useful in preventing lodging problems and also in separating parts. They are made primarily with silica. Other materials in the manufacture of ceramic media include minerals and abrasives. Silica, minerals and abrasives are combined in different proportions and treated at a high temperature to produce a very hard product that is as strong as a cement product.

Ceramic media of varying density is used for different purposes. Where a rough finishing is needed (fast cutting and rough surfaces), higher density ceramic media is used. For smoother finishing, lesser density ceramic media is ideal. Higher the proportion of the abrasive material used in the manufacture of ceramic media, higher is the density. Higher the density, quicker is the wear and tear. There fore, higher density ceramic media should be considered only for special cases and when there is a need for cycle time reduction. To aid in special finishing requirements, the ceramic media can be tailored by changing the type and amount of abrasive grain used.

The fastest available option for mass finishing of parts is the centrifugal barrel machines. Their cycle times are 20 times faster compared to vibratory finishing machines. The centrifugal barrel machines have large barrels for loading parts, media and finishing compounds. They are high energy machines. In a typical centrifugal machine, there is a turret at the centre. A set of barrels are placed around the turret. When the turret starts rotating in one direction, they set the barrels rotating in the other direction. Thus a high energy sliding action is produced inside the barrels, imparting a uniform finish to the parts. Barrels are normally made of steel; sometimes they are made from composite materials too. They have polyurethane lining and can be removed during the loading and unloading process. Steel barrels are meant for cycle times exceeding one hour; for cycle times less than an hour, composite barrels are ideal.

Centrifugal barrel machines come with process timers that can be set for specific finishing jobs. There is an emergency stop switch that can be used in crisis scenario. Indicator lights and safety locks are generally provided to ensure control and safety. Wiring can be done for different electrical voltage settings. To explore options in centrifugal barrel machines and ceramic media, visit http://gravcollc.com/

Tumbling media are materials that are used in the finishing process. They are loaded with parts to be finished into finishing machines, with or without tumbling compounds. They help in cleaning, smoothing and deburring of parts. Tumbling media can be man made or natural. Man made media include plastic media, synthetic media and ceramic media which come in preformed shapes. Natural media include walnut shell media and corn cob media. Tumbling media are used in finishing machines like tumbling barrels, vibratory machines and centrifugal machines.

Plastic media are otherwise known as tumbling stones. They come in shapes like cones, pyramids and triangles and have varying abrasive properties. They create smooth but dull finishes on surfaces and because of their light weight are suited for use on parts that might get damaged easily. They are safe on threaded parts and can be used on parts as a pre cursor to anodizing. The cone shaped plastic media act well on parts with holes and triangle shape acts well on edges and flat surfaces. Multiple shapes can be used on parts with complex designs.

Ceramic tumbling media are made of silica, minerals and abrasives mixed in different proportions and processed at high temperatures to produce hardened shapes. They are good for aggressive finishing needs and work well with hard metal parts. They suit usage with heavy loads that cannot be handled by plastics; they also come in smaller sizes and hence are suited for smaller parts. Synthetic tumbling media also come in different shapes; they weigh lesser compared to ceramic media. They are cost effective and are good to provide ultra smooth finishes. Compared to plastic media, they take more wear and tear and residue left from processing is lesser. They are ideal for use in high energy machines like centrifugal barrels.

Tumbling compounds are chemicals used to increase the effectiveness of media by ensuring that glaze is not formed on the parts during the finishing process. They act as abrasive agents and help in maintaining a nice color to the metal parts. They impart anti rust and anti corrosion properties to the parts when the right agents are added to them; they are effective cleaning agents and help in deburring by suspending debris and preventing them from getting re-deposited on the parts. The compounds are either alkaline or acidic in nature depending on the media they are used with.

The flow rate of the tumbling compounds should be matched with the volume of media being used for a good finish. Tumbling compounds are known to help in degreasing, descaling and removing grime. They help in lubrication of parts to protect them. They help in grinding, polishing and brightening of surfaces. They help to finish delicate parts by providing a cushioning effect and preventing damage to the parts. Acidic tumbling compounds enhance cutting speeds and bleaching efficiency. When used in proper combination with finishing media, tumbling compounds help to reduce cycle times substantially. To learn about the advantages of tumbling media and tumbling compounds, go to http://gravcollc.com/

‘Media’ is the terminology used to define a material that is used to modify or alter the appearance of a part. It generally refers to an abrasive, but it could refer to any material that can abrade, clean, polish or separate parts. Tumbling media is used in general purpose metal polishing, deburring – both light and heavy, fast and extra fast and aggressive metal removal, fast, heavy cutting, jewellery polishing, burnishing etc. There are many types of tumbling media like ceramic performed shapes, plastic performed shapes, synthetic performed shapes, precision ceramic preformed shapes, carbon steel, stainless steel, hardwood, aluminium oxide, corn cob, silicon carbide grit and walnut shells are some of them.

A finishing media company has to give high quality products at reasonable prices to their clients. A fully equipped laboratory stocked with finishing machines where new processes are developed to meet even the toughest application will make them effective innovators. Plastic media is normally used for pre painted or pre plated finishes, polishing and in cutting fast and heavy duty. Plastic media are ideal for soft metals like brass and aluminium and stringy materials. It is useful for providing a smooth but dull finish. These media are long lasting and are built to cut fast and provide a fine finish. With a vast experience, a company can provide customized solutions to their clients. Ceramic tumbling media come in different shapes, sizes and composition. Ceramic media are used for fast deburring and tough metal removal. It is mainly used in cutting hard metals. When media of smaller dimensions are needed, ceramic media offers the best options. It is better than plastic media in supporting very heavy metal parts.

Dry finishing media of smaller dimensions are used to polish and finish smaller surfaces like jewellery. For this, cob and walnut shells that are treated are used and a finishing paste is also typically used for this. Very delicate surfaces of any size can also be finished using corn cob media. Corn cob is bio degradable and it is a tumbling grit. It can be applied as tumbling and vibratory media and can dry parts by absorbing oil and dirt, without scratching the parts’ surfaces. These products can be used to finish even very small and delicate surfaces effectively. Their product formulas can achieve 1 Ra finish and are made to handle even finishes of a delicate nature for decorative requirements.

There is a wide range of tumbling compounds to satisfy different client needs. Dry compounds, liquid compounds, burnishing compounds, cleaning compounds and deburring compounds are some of the available finishing tumbling compounds. There are compounds for standard deburring applications, burnishing of steel, part on part and applications in washing different parts. Walnut shells are treated and prepared by grinding them into different grit sizes. They are used in cleaning as well as polishing of surfaces. It is recommended as tumble media for polishing metals like aluminium, brass and bronze. They are soft abrasives but highly durable and angular. To learn more, go to http://gravcollc.com/

Deburring is the process of removing jagged edges or protrusions from parts, mostly wooden and metal parts. Deburring machines are used to accomplish the process of deburring. Primarily two types of deburring machines are used – tumbling or barrel machines and vibratory machines. Tumblers are used for mass finishing of parts. They can be used for wet as well as dry finishing. These systems are well suited for fast and efficient deburring of plastic and metal parts or components. There are models that are available in different sizes from compact bench models to big barrels that can be fixed on floors. Tumbling systems are very important deburring systems in use. They are typically used where heavy deburring is required. Barrels are ideal for heavy loads. Dry tumbling is used when delicate deburring is called for and produces a smooth finish. Wet barrelling is used for metal processing to remove excess material as well as to provide a polish.

Vibratory deburring machines are also used for mass finishing. They function by shaking or vibrating the processing vessel, which causes the finishing media and parts to scrape against each other thus accomplishing a deburr and producing a polish. These deburing machines are precise and can deburr even recesses in the parts and hence they are very well adapted for delicate and intricate components. They can also be used on large surfaces because they have very short strokes and high speeds. These machines can be automated quite easily compared to tumblers.

Blasting machines are another type of deburring machines in which media is blasted on to parts under high pressure thus creating a finishing action. Blasting machines are used to deburr hard to reach parts and also to clean parts of dust, grime, rust etc. There are also other deburring machines like gyra machines, centrifugal disks and spin finishing machines for specialized usage.

Finishing media are used in finishing systems to aid in the deburring process. Ceramic media is ideal for use with hard metals that need heavy cutting action. They are generally used for polishing and deburring – light, heavy, fast or super fast deburring. For applications that need small sized media, ceramic media is highly recommended. They come in pre formed shapes to suit different purposes. Cones, stars, triangles, cylinders etc are some of the shapes in ceramic media. These shapes ensure easy separation of parts and deburring of hard to reach areas. Ceramic media are long lasting and inexpensive. As they can be used for multiple requirements, they are the most commonly used in the mass finishing industry.

Ceramic media are made as a combination of silica, minerals and abrasive materials and are manufactured at very high temperatures thus producing hard ceramic media which are then cut to the desired length. The rougher deburring applications call for a ceramic media that has more density. By using more abrasive in the manufacturing, high density can be achieved. But high density means faster wear and tear; so they are used only rarely. Go to http://gravcollc.com/ for more information on deburring machines and media.