Metal spinning , also known as spinning spin forming or spinning or metal turning most commonly, is a metal working process where the disk or metal tubes rotated at high speed and formed into axial symmetrical parts. Spinning can be done by hand or by a CNC lathe.
Metal spinning does not involve the removal of materials, such as on wood or metals that are conventionally converted, but forming (printing) sheet material on top of existing shapes.
The range of metal spinning from the artisan specialization to the most advantageous way to form a round metal part for commercial applications. Craftsmen use the process to produce architectural details, special lighting, decorative household items and jars. Commercial applications include rocket nose cone, cookware, gas cylinders, brass instrument bells, and common waste containers. Almost any ductile metal can be formed, from aluminum or stainless steels, to high-strength, high-temperature alloys including INX, Inconel, Grade 50/Corten, and Hastelloy. The diameter and depth of the parts formed are limited only by the size of the available equipment.
Video Metal spinning
Process
The spinning process is quite simple. The resulting block is installed in the lathe drive section. A large metal disk is then clamped against the block by a pressure cushion, attached to the tailstock. Blocks and workpieces are then rotated together at high speed. The local style is then applied to the workpiece to cause it to flow over the block. This style is usually applied through various lever tools. Simple workpieces are only removed from the beam, but more complex forms may require multi-part blocks. Very complex shapes can be moved to form ice, which then melts after spinning. Since the final diameter of the workpiece is always less than the initial diameter, the workpiece must be thickened, radially extending, or buckle in a circle.
The more involved processes, known as reducing or necking , allow rotating objects to insert reentrant geometry. If the surface is finished and the shape is not critical, then the workpiece "spins in the air"; no mandrel is used. When finished or form is very important then installed eccentric mandrel is used.
"Hot spinning" involves spinning a piece of metal on a lathe while the high heat of the torch is applied to the workpiece. Once heated, the metal is then formed as a tool on the lathe suppressing the heated surface thus making it distorted when rotating. The parts can then be formed or tied to a smaller diameter with less power given, giving a smooth shoulder.
Tools
A basic hand-cutting cutter is called spoon , although many other tools (whether commercially produced, ad hoc, or improvisation) can be used to influence varied results. The rotating device may be made of hardened steel for use with aluminum or solid brass for spun stainless or mild steel.
Some metal spinning devices are allowed to spin on bearings during the formation process. This reduces friction and heating tools, extending the life of the chisel and improving the final surface. Rotating tools can also be coated with ceramic thin films to extend tool life. Rotating devices are usually used during CNC metal spinning operations.
Commercially, rollers mounted at the end of the lever are generally used to form the material down into mandrel in both spinning and CNC metal spinning. The rolls vary in diameter and thickness depending on the intended use. The wider the roller the finer the spinning surface; thinner rolls can be used to form smaller radii.
Metal cutting is done by hand cutter, often a hollow long hollow bar with a steel-shaped/sharpened tool attached. In CNC applications, carbide or tool steel cutters are used.
Mandrel does not generate excessive force, as found in other metalworking processes, so it can be made of wood, plastic, or ice. For hard materials or high volume usage, mandrels are usually made of metal.
Maps Metal spinning
Advantages & amp; loss
Some operations can be done in one setting. Workpieces may have participant profiles and profiles associated with a virtually unlimited center line.
Forming parameters and section geometry can be changed quickly, at a lower cost than other metal forming techniques. Tools and production costs are also relatively low. Spin forming, often done by hand, easy automatic and effective production methods for prototypes as well as high quantity production runs.
Other methods for forming a round metal part include hydroforming, stamping, forging and casting. These other methods generally have higher fixed costs, but variable costs are lower than that of metal spinning. Since machining for commercial applications has increased, the parts are spun with thicker materials thicker than 1 inch (25mm) thick steel. Conventional spinning also removes much less material than other methods.
Objects can be built using a single piece of material to produce sutless parts. Without suture, a part can withstand the higher internal or external pressure given to it. For example: scuba tank and CO 2 cartridge.
One of the disadvantages of metal spinning is that if a crack is formed or the object is dented, it must be discarded. Fixing objects is not cost-effective.
See also
- Curling (metal work)
- Shear spinning
External links
- Metal Spinning Machine by DENN
- Innovative Metal Spinning by DMSDesignCo
- Manufacturing Metal Spinners
- Metal Spinning App
- Metal Play History
References
Source of the article : Wikipedia
0 Comments