Sheet metal fabrication is actually to transform the metal sheet, and realize its various uses, there are a variety of processing methods, such as stamping, cutting, and cutting, for example, every family needs a door and stainless steel Windows, as well as electrical boxes, sheet metal parts must process all kinds of control boxes. If you need customized sheet metal processing products, you can contact Bergek and send drawings to us to get a quotation.
Sheet metal fabrication occupies one-third of the world in metal processing, and its wide application field almost appears in all walks of life. If the number of sheet metal (sheet metal thickness below 6mm) cutting processes, nothing more than laser cutting, plasma cutting, flame-cutting, shearing machine, stamping, and so on. So where are these parts made?
In each large and small sheet metal fabrication factory. This processing work is also a relatively high requirement for operators, operators need to understand the sheet metal processing process, but also be familiar with the application of sheet metal equipment and input method of parameter information.
In simple terms, sheet metal fabrication parts mainly include laser cutting or shearing plate blanking, CNC bending forming, stamping forming CNC blanking, and other processing methods, sheet metal processing technology directly determines the quality of sheet metal processing.
Sheet metal fabrication process: 1. blanking 2. bending 3. stretching 4.
welding 5. plastic spraying 6. inspection 7. warehousing. Definition: refers to
the processing technology for plates with uniform thickness. It does not need to
be formed by molds, and the production speed is slow, including blanking,
bending, stretching, welding, plastic spraying, assembly, etc., mainly including
processing steps such as shearing, punching, folding, welding, and gluing.
1. Blanking: mainly digital blanking and laser cutting. Digital punching
refers to the processing with a numerical control punch. The thickness range of
plates is: cold rolled and hot rolled plates ≤ 3mm, aluminum plates ≤ 4mm, and
stainless steel ≤ 2mm. There are minimum size requirements for punching. The
minimum size is related to the hole shape, material properties, and thickness.
Laser cutting is a laser flight-cutting process. The thickness of the plate is ≤
20mm for cold-rolled and hot-rolled plates, and ≤ 10mm for stainless steel. The
utility model has the advantages that the thickness of the processing plate is
large, the profile speed of the cutting workpiece is fast, and the processing is
flexible; The disadvantage is that it cannot be processed and formed, and the
mesh parts should not be processed in this way, and the processing cost is
2. Bending: the bending piece has the minimum bending radius. When the
material is bent, the outer layer is stretched and the inner layer is compressed
in the fillet area. When the thickness of the material is constant, the smaller
the inner bending radius is, the more serious the tension and compression of the
material will be; When the tensile force of the outer layer exceeds the limit of
the material, fracture and fracture will occur.
3. Stretch: The radius of the fillet between the bottom of the stretch piece
and the straight wall should be greater than the thickness of the plate. The
thickness of the material after stretching will change to a certain extent. The
center of the bottom will generally maintain the original thickness, the
material at the bottom fillet will become thinner, the material at the top near
the flange will become thicker, and the material around the rectangular stretch
piece will become thicker.
4. Welding: mainly electric arc welding and gas welding. ① Arc welding is
flexible, flexible, and widely applicable to all position welding; The equipment
used is simple, durable, and low maintenance cost. However, the labor intensity
is high and the quality is not stable enough, depending on the level of the
operator. It is suitable for welding carbon steel, low alloy steel, copper,
aluminum, and other nonferrous alloys with a diameter of more than 3mm. ② The
flame temperature and property of gas welding can be adjusted. Compared with
electric arc welding, the heat source is more comprehensive than the
heat-affected zone, the heat is not as concentrated as the arc, and the
productivity is low. It is used for welding thin-walled structures and small
pieces, weldable steel, cast iron, aluminum, copper and their alloys, cemented
5. Plastic spraying: The surface of the hardware is automatically sprayed
with oil and powder through the oven and other machines to make the product
beautiful and meet the packaging and shipping requirements.
6. Inspection: The quality inspection department controls the production
process in real-time to reduce production loss and reject rate and ensure
7. Warehousing: The products that have gone through the above processes can
be packaged and warehoused when they have met the requirements for warehousing