Sheet metal Fabrication Services
Metal fabrication is the creation of metal structures by cutting, bending and assembling processes. It is a value-added process involving the creation of machines, parts, and structures from various raw materials.
Sheet metal Fabrication Services
Sheet Metal fabrication is the creation of metal structures by cutting, bending and assembling processes. It is a value-added process involving the creation of machines, parts, and structures from various raw materials.
Typically, a fabrication shop bids on a job, usually based on engineering drawings, and if awarded the contract, builds the product. Large fab shops employ a multitude of value-added processes, including welding, cutting, forming and machining.
As with other manufacturing processes, both human labor and automation are commonly used. A fabricated product may be called a fabrication, and shops specializing in this type of work are called fab shops. The end products of other common types of metalworking, such as machining, metal stamping, forging, and casting, may be similar in shape and function, but those processes are not classified as fabrication.
Sheet metal processing is a comprehensive cold-worked post-forming process for thin metal sheets (usually below 6mm), including shearing, punching/cutting/compounding, folding, welding, riveting, splicing, forming (such as automobile bodies), etc. Its remarkable feature is that the thickness of the same part is the same. The products processed by the sheet metal process are called sheet metal parts. The sheet metal parts referred to by different industries are generally different, and are mostly used for assembly. Sheet metal processing is called sheet metal processing. Specifically, for example, the use of plates to make chimneys, iron drums, fuel tanks and oil cans, ventilation pipes, elbows and heads, round places, funnels, etc. The main processes include shearing, bending, bending, forming, welding, riveting, etc.
The materials commonly used in sheet metal processing are cold-rolled sheet (SPCC), hot-rolled sheet (SHCC), galvanized sheet (SECC, SGCC), copper (CU) brass, red copper, beryllium copper, aluminum sheet (6061, 5052, 1010, 1060, 6063, duralumin, etc.), stainless steel (mirror surface, brushed surface, matte surface), according to the different functions of the product, different materials are selected, generally need to consider the use and cost of the product.
1. Cold-rolled sheet SPCC, mainly used for electroplating and baking paint, low cost, easy to form, material thickness ≤ 3.2mm.
2. Hot-rolled sheet SHCC, material T≥3.0mm, also uses electroplating and paint parts, low cost, but difficult to form, mainly flat parts.
3. Galvanized sheet SECC, SGCC. The SECC electrolytic plate is divided into N material and P material. The N material is mainly used for surface treatment, and the cost is high. The P material is used for sprayed parts.
4. Copper; mainly used for conductive materials, and its surface treatment is nickel-plated, chrome-plated, or no treatment, and the cost is high.
5. Aluminum plate; generally use surface chromate (J11-A), oxidation (conductive oxidation, chemical oxidation), high cost, silver plating, nickel plating.
6. Aluminum profiles; materials with complex cross-sectional structures, which are widely used in various sub-boxes. The surface treatment is the same as the aluminum plate.
7. Stainless steel; SUS304 is one of the most widely used stainless steels. Because it contains Ni (nickel), it is richer in corrosion resistance and heat resistance than steel containing Cr (chromium). It has very good mechanical properties, no heat treatment hardening phenomenon, no elasticity . The content of SUS301Cr (chromium) is lower than that of SUS304, and the corrosion resistance is poor. However, after cold working, it can obtain good tensile force and hardness in the stamping process, and has good elasticity. It is mostly used for shrapnel springs and anti-EMI.
Sheet metal fabrication technology features
Sheet metal has the characteristics of light weight, high strength, electrical conductivity (can be used for electromagnetic shielding), low cost, and good mass production performance. It has been widely used in electronic appliances, communications, automotive industry, medical equipment and other fields. In computer cases, mobile phones, and MP3s, sheet metal is an essential part. As the application of sheet metal becomes more and more extensive, the design of sheet metal parts has become an important part of the product development process. Mechanical engineers must be proficient in the design skills of sheet metal parts, so that the designed sheet metal can meet the requirements of the product. Function and appearance requirements, but also make the stamping die manufacturing simple and low cost
Commonly used equipment for sheet metal processing basically includes Shear Machine, CNC Punching Machine/Laser, Plasma, Water Jet Cutting Machine, Bending Machine, Drilling Machine and various auxiliary Equipment such as: uncoiler, leveling machine, deburring machine, spot welding machine, etc.
Usually, the four most important steps of sheet metal process are shearing, punching/cutting/folding/rolling, welding, surface treatment, etc. The surface treatment of sheet metal parts is also a very important part of the sheet metal processing process, because it can prevent parts from rusting and beautify the appearance of products. The role of the surface pretreatment of sheet metal parts is mainly to remove oil, oxide scale, rust, etc. It prepares for the surface post-treatment, and the post-treatment is mainly spraying (baking) paint, plastic spraying, and anti-rust coating.
Examples of Sheet metal Fabrication Services
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