Tube milling machines are a valuable part of most factories. They are used for the production of both tube and pipe by taking a continuous, cylindrical strip of material out of an ore batch and continually rollforming the strip until both the ends of the strip meet firmly at a jointing station. Once they are welded together, the material is discharged from the weld puddle into a workbench, where it is beaten into sheets, trimmed and fed into a die for cutting. The dies may be stacked on top of one another to form sheet metal. Alternatively they may be stacked on their own, so that each sheet is manually fed into the die. Either way, once the sheet becomes a final product it is simply removed from the area, unassembled and sent to the customer for assembly.
There are two basic types of tube mills; electrical or hydraulic tube machines. Hydraulic tube machines require manual movement of rollers and thus cannot easily be serviced in an office environment, whereas electrical machines can be easily monitored and serviced by trained technicians. The hydraulic machine is also the only machine that can process both wet and dry rolled ductile iron (DRI) with ease, as the ductile iron must be kept in a water-proof environment during processing. The electrical milling machine is limited to processing dry rolled ductile iron (DRI).
Tube Mills can be fitted to cater for a variety of requirements. Smaller tube milling machines can grind smaller diameter range of rolls to the standard diameter range or to custom-made, pre-determined diameter range. Larger machinery is capable of milling out larger diameter range of rolls with greater precision. Large diameter range products can be processed more accurately using large capacity machines that can handle the large diameter range of product.
Tube Mills can be fitted to grinding systems to grind soft metals like aluminum, tin, brass, bronze, stainless steel, iron etc. These products need to undergo some sort of crush to soften the material to a manageable state. Some of these products require softening of the product with the help of water before it is machined or crushed. The process of softening the metal is known as cupping. Some other uses for tube mills are to form tubes and pipes, crush hard metal, fabricate tubing and pipes and produce sheet metal products such as sheets, plates, sheets and plates.
The simplest forms of Tube Mill are those that are used for simple shapes such as round shapes and rectangular forms. They can be further modified to be used for various intricate designs of complex shapes. For this job, advanced machines are designed. The most common tube milling machine is the ball bearing cutter type. It cuts round shapes in a simple manner by forcing the balls into the mandrel, which holds the round shape.
Tube Mills can be used for machining different kinds of metals including bronze, copper, brass, steel, stainless steel, iron etc. The main advantages of using these machines are that they are easy to handle, have high precision and allow for very thin materials to be machined in a short time. The most common alloy used for making these mills is steel or alloy steel. Various types of stone, tile and granite are also processed into very thin sheets using this method.