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Vibratory Surface Finishing |
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Vibratory surface finishing has got a wide range for;polishing,drying,raducing ,matting deburring,degrasing purposes to many industries,such as ; automotive industry,plastics and rubber industry,marble industry,jewellery industry, industry of arms and so on..
It is an easier method to provide smoother surfaces by vibratory suface finishing rather than the other surface treatments,almost available on very thin cracks and spiral structured materials.Especially preferred in use for fine structures and mass materials. It is much easy to load and unload the vibratory machines,therefore enables polishing, deburring,scrapping and other processes in a shorter period of time. Recycling the compounds and water thoroughly in the tank ensure the consumables operation for many material without losing speciality. A few points of ensuring best results from vibratory process is described herein ;
Abrasives (Vibratory Media)
It is recommended to chose appropriate media with coarse grain in order to have fast material process.No doubt that it is also very important to consider the eligible media unharmful and easily seperative from the material after process. There exists all kinds and sizes of media designed applicable to desired vibration process. Vibratory media are considered for process regarding to desired surface treatment and are made of and classified as;ceramic abrasive chips, plastic abrasive chips,ureic chips ,ceramic polishing chips. Ceramic chips are especially used for treatment of hard and strong metals and materials. Recommended for high speed deburring,cleaning and polishing. Plastic chips are generally used for preparation of material prior to painting and coating and scrapping. Almost preferably used in surface treatment of soft metals like brass and aluminium. Ureic chips are used for deburring generally aluminium and zinc materials and sometimes applicable to brass. The materails desired to be polished are treated by ceramic polishing abrasives. According to different size and characteristics of the materials,there exist various size and shape of polishing abrasives.
Finishing Compounds
Relevantly to abrasives and to requirement of surface treatment there exists different types of finishing compounds. Compounds have got deburring,polishing,high pasivation ability,degrasing,descaling, derusting and etc.properties. Plastic chips are generally used with cleaning compounds. Sometimes there exist a need of deburring compound agregation when operating with ceramic chips. During the processes with heavy deburring compounds,water must not be cycled.
Water
In order to provide best deburring effect,minimum water usage is recommended. If more water in process than it will cause the lower deburring effect,and by the way operating chip starts polishing the material. Even if two different types of materials put into process at the same time then adding a bit more water will enable the materials be aparted easily. Small grain of chips absorb water after a few circulation,and friction reduces.(In this case it is recommended to stop machine and exclude some water) Deburring effect will increase due to water reducement.But in case of reducing below normal level then the surface finishing will become worse. Therefore water level must be regulated carefully.
Material Quantity
Mass and fragile materials should be operated fastly but with minimum charge capacity. High speed and minimum charge capacity is ideal for best results,and is highly recommended for polishing and inside deburring purposes. Strong materials are recommended to be load abundantly in order to increase material circulation which is accepted very useful for better deburring.
Media (Chips) Quantity
You can always get the best results by 75% to 90% loading of chips.Loading chips 3 times of the material mass will prevent the fragile material damages during the process.
Speed
Only a few machines may have different speed regulations.The speed in common use is determined as 1700 vibration per second.If the speed is reduced much below this point than the material slide beneath chips and deburring becomes ineffective. Slow speed of vibratory finishing aparts the material from the chips. |
