Wednesday, April 8, 2015
Shot blasting machines for Aluminium die castings, Brass & Gun metal parts are available in various models such as Tumblast, Table, Hanger & Continuous conveyor models.
In Tumblast, a conveyor belt rotates inwards, inside the chamber of the shot blasting machine & the components are loaded on it as per the size & capacity of the machine. The door is than closed. Rotor is switched on for throwing Shots or Grits on the components. By this process, the loaded components get a universal finish. Abrasive medias such as Shots or Grits are continuously fed by the elevator of abrasive media. All the dust extracted in the process goes to the attached dust collector. On completion of desired time period, the door is opened & than the conveyor belt is driven outwards. As a result the components can be removed from the chamber. An automatic loading system can also be attached to the shot / grit blasting machine.
The Tumblast shot blasting machines are available in many sizes, right from a 2 cu ft capacity machine to a 15 & 20 cu ft capacity machines. Some of the sizes are: 20" x 27", 20" x 42", 27" x 36", 30" x 43", 36" x 42", 42" x 42" as well 48" x 48".
Similarly, Hanger model Shot blasting machines are available in Single / Double door type, Centralised hanger type as well a monorail type. In this model, the components are hanged instead of loading on the conveyor belt. Rest of the process is same. The hanger rotates for a universal finish using multiple rotors depending upon requirement. The benefit is that the components do not touch each other in the process of finishing and hence are scratch free.
Swing table model shot blasting machines are suitable for bigger or heavier components or if the smaller parts are to be shot blasted only one side. Many sizes are available from a minimum 36" of table to 120" of table in sngle as well double doors.
Continuous conveyor model shot blasting machines are suitable for smaller components which are to be shot blasted only one side with a single rotor. Multiple sides can be finished by using multiple rotors. Components are fed from one side & removed from the other side duly finished.
The spare parts for shot blasting machines, mostly wearable are made from ni hard or alloy steel to get the maximum life.The main spare parts include the Rotor, Blades, Spring locks, Cage & Impeller, Cage adapter, centre plate, Top segment, Side liners, Round plates as well the conveyor belt. Few precautions are necessary while running the machine.
The Tumblast model of Shot blasting machine if to be used for finishing of smaller components is best suitable and very cost effective. we can be contacted with details of your components for a suitable size & model of shot blasting machine.
Metal components must be Deburred, Cleaned & Finished, before affixing them into any of the bigger mechanism. These metal components may be the sand castings, forgings, aluminium die castings, zinc die castings, brass & gun metal parts, sheet metal or tempered components.
In the earlier days, people used the Tumbling barrels, loaded with leather particles ( even now being used at many places ) for cleaning & finishing of metal parts. Later the Vibratory finishing machines, Centrifugal finishing machines, Drag finishing machines as well the Roll Flow finishing machines came into operation. Various types of ceramic stones, plastic stones, stainless steel media, walnut shells, glass beads are used in this type of machines for deburring & polishing of metal components.
Similarly, Rotary barrel shot blasting machines came into existence in the earlier days for abrasive blasting on metal parts for cleaning & finishing. Later the horizontal model of Shot Blasting machines came into action such as Tumblast shot blasting, Table shot blasting, Hanger shot blasting & the continuous conveyor shot blasting machines. These machines have a centrifugal blasting rotor that rotates mechanically, whie throwing steel balls, normally called shots or grits, on the components for the finishing.
Sand blasting machines are also available in portable models as well the cabinet models. The cabinet model of sand blasting machines include various models such as pressure blasting, suction blasting as well the wet blasting machines. These machines can be used to clean & finish any specific area of a metal component also. Sand blasting nozzles of boron carbide & tungsten carbide are used in these machines & these are operated by the air pressure provided by a compressor. Sand blasting as well glass etching is also being done now a days on glass, by using these sand blasting machines. Various types of abrasive medias such as aluminium oxide, glass beads, river sand, shots, grits, plastic abrasive, garnet etc can be used in these machines.
The latest in surface finishing machines include the Thermal deburring machines, Electro chemical deburring machines, Dry ice blast cleaning machines, Micro sand blasting machines & a lot more. More details can be viewed in the Directory of Finishing machines which offers a wide range of machines as above.