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Sheet Metal Fabrication
Your one-stop services of Custom Manufacturing and Rapid Prototyping in China
YI HITECH custom metal fabrication services offer subcontract custom mechanical manufacturing from design to delivery. by involve in your concept design to full mass production, YI HITECH has wide range of technology and skills to deliver sheet metal fabrications, CNC machining services, plastic tooling design and fabrication, injection molding, die casting and rapid prototype as well. across all industry sectors. And we can ensure speedy delivery and exceptional product quality.
What is sheet metal fabrication?
Sheet metal fabrication is a classification of manufacturing processes that turning flat sheet metal into the desired shape of part structures through material removal and/or material deformation by cutting, punching, folding and assembling process. Sheet metal fabrication processes can mostly be placed into two categories - forming and cutting. Forming processes are those in which the applied force causes the material to plastically deform, but not to fail, Such the processes are able to bend or stretch the sheet into nearly desired shape. Deformation processes can bend the sheet numerous times to different angles or stretch the sheet to create complex contours. Cutting processes are those in which the applied force causes the material to fail and separate, allowing the material to be cut or removed. Material removal processes can create holes and cutouts in any 2D geometric shape. Most cutting processes are performed by applying a great enough shearing force to separate the material and are therefore sometimes referred to as shearing processes. Other cutting processes remove material by using heat or abrasion, instead of shearing forces. Sheet metal fabrication is more cost-effective than CNC machining when it comes to metal components with uniform wall thickness.
Sheet metal fabrication processes
Forming
1. Bending, A process done by hammering or via press brakes.
2. Roll forming, A constant bending process in which sheet metal, coil, bar, or strips of metal pass through rolls that form the metal
3. Spinning, A process by which a disc or tube of metal rotates at a high speed and forms into an axially symmetric part using a CNC lathe or by hand
4. Deep Drawing, A process of forming sheet metal stock,called blanks, into geometrical or irregular shapes that are more than half their diameters in depth.
5. Stretch forming, A process that uses a hammer and dolly, a stretcher, or an English wheel to pull metal apart
Cutting with shear
1. Shearing, A process that cuts metal pieces without the formation of chips or the use of burning or melting, also known die cut.
2. Blanking, A process in which a part is cut out of the sheet metal, and the material around the part is discarded.
3. Punching, A process in which metal fabrication equipment punches holes, louvers, or a predetermined shape out of sheet metal
Cutting without shear, A process done by sawing or torching with handheld plasma torches using computer numerical computer (CNC) cutters like below
1. Laser beam cutting
2. Plasma cutting
3. Water jet cutting
Stamping, A high production process in which single or multiple punches, bends, and embossing perform simultaneously or in a progressive die.
Milling: A process of using rotary cutters to remove material from a metal piece, advancing in a direction at an angle with the axis of a tool.
Assembling, A process done by welding, binding with adhesives, and bending in the form of a crimped seam
1) Fastening: A process using self-clinching tools like nuts, studs, spacers, access hardware, or cable tie mounts and hooks to provide torque resistance in applications where the sheet metal is too thin to be secured by other methods
2) Oxy acetylene welding: A process in which a tank of oxygen and acetylene combine with an adjustable torch to result in a precise, controlled flame used to heat metal.
Sheet Metal Material
Aluminum
Brass
Bronze
Copper
Magnesium
NickelStainless steel
Steel
Tin
Titanium
Zinc
Sheet metal surface finishing
Finishing: A process in which a completed metal project's surface is altered to achieve a certain property, which includes improved appearance; adhesion or wettability; solderability; corrosion, tarnish chemical, or wear resistance; hardness; electrical conductivity; surface friction control; and blemish removal.
Surface Finishes
Polishing & surface grindingElectroPlating
Sandblasting & Bead blastingAnodizing
PaintingFlame/ Vacuum/Nitrided hardness
Screen printing for markHot Galvanized
Laser engravingChemical Black & Black Oxide
Powder coatingVacuum plating
Advantages
1. Can form complex shapes
2. Many materials option
3. High production rate
4. Low labor cost
5. Short lead time possible
Disadvantages
1. Limited to constant part thickness
2. Part may require several operations and machines
3. Large amount of scrap
Cases StudiesPrototype suppliers
website:http://www.yi-hitech.com/prototype/