With the advancement of technology and the improvement of high-performance equipment, the complex processing technology in sheet metal manufacturing production is becoming more and more mature. Sheet metal processing is widely used in all walks of life. From the electronics industry and the automotive industry, communication engineering to the medical device industry, sheet metal is inseparable. Before you buy an automated sheet metal production line, you must have an understanding of common sheet metal processing techniques.
What are the processing technologies in the sheet metal production line
Sheet metal processing technology is a comprehensive cold processing technology for sheet metal processing. As sheet metal parts become more and more widely used, the processing technology in the sheet metal production line has become a very important part of the product development process. Designers need to master the process characteristics of sheet metal. On the one hand, it is necessary to meet the requirements of product function and appearance, and on the other hand, simplify the model and simplify the production process, so as to achieve low production costs and high production efficiency.
Common processes in sheet metal processing
China sheet metal press brake can meet the cutting of parts of various shapes, while the punch has advantages in mass processing.
The workpiece is bent by a bending machine according to the size of the bend icon note. The bending die is divided into upper mold and lower mold. Different shapes require different molds. The accuracy of the bending dimension is determined by the quality of the mold.
Use a mold on an ordinary punch or other china sheet metal press brake to directly make the workpiece into the desired shape. Most of them are stamping, and are widely used in the fields of automotive sheet metal and electronic products.
According to the bottom hole of the workpiece, the corresponding internal thread is machined on the workpiece. Tapping has requirements on the thickness of the plate, and it is easy to slip if it is too thin.
Taper holes are machined on the workpiece. In order to have a good appearance, no exposed screw heads, workpieces are mostly fitted with countersunk holes.
Fasteners such as riveting nuts, screws, or nut posts should be firmly crimped onto the workpiece by means of a punch or hydraulic press. Pre-opening the bottom hole on the workpiece for press-riveting, and pressing the fastener on the workpiece during bending can reduce the welding workload and protect the appearance of the special workpiece, which is also one of the processing technologies in the Sheet metal production line.
7.Stamping convex hull
A punch or hydraulic press uses a mold to form a convex shape on a workpiece, such as a punch louver. Different shapes require different molds. Overall, it has a nice appearance and is powerful.
Use a mold to stamp words, symbols or other shapes on the workpiece, mainly including the company name, company logo, company website and company contact number. The advantage is that it can be permanently retained with the workpiece.
Punching mesh holes from the workpiece with a die on a normal punch or CNC punch. The mesh plate on the workpiece can play a beautiful decorative role and meet the heat dissipation function.
This is also one of the processing technologies in the Sheet Metal Production Line and deburring. The burrs on the surface of the workpiece can be removed with tools such as grinders, files, etc., to make the workpiece processing area smooth and flat, and prevent cutting scratches.
11.Argon arc welding
The connection between the workpiece and the workpiece is welded at the edge or joint of the workpiece by an argon arc welding machine, which is divided into intermittent welding and full welding. It needs to be clearly marked on the drawing. Argon arc welding has stable arc combustion, high production efficiency, small welding deformation, and convenient operation and observation.
The plant welding screw is firmly welded to the workpiece with a plant welding gun. Planting welding is commonly used on workpieces with low stress and requirements on the outer surface of the workpiece to ensure the aesthetics of the workpiece.
13.Welding and polishing
The processing technology in the sheet metal production line also includes welding and polishing. Using tools such as a sander, a file, etc., to make the welding marks of the workpiece smooth and flat. China sheet metal press brake can obtain a good molding surface and increase the adhesion of the subsequent spraying plastic powder.
After the workpiece is processed, the workpiece should be degreased and rusted with an electrolyte before painting or dusting, and a cleaning coating (such as a phosphating film) should be added and cleaned on the surface of the workpiece to increase the adhesion of the subsequent powdered plastic.
15.Dust removal and grinding
Use atomic ash to compensate for defects on the surface of the workpiece, such as welding gaps or pits, and polish the surface of the workpiece after scratching with a surface grinder or abrasive cloth to increase the parallelism and appearance of the entire workpiece, and further increase the adhesion of the spray powder.
It uses a wire drawing machine and a sanding belt to texture the surface of the workpiece to increase aesthetics and market demand. Mainly stainless steel surface treatment.
Polishing equipment is used to polish the surface of the workpiece to increase aesthetics and surface finish, mainly stainless steel surface treatment.
In order to improve the hardness of the workpiece, the ultimate goal of heat treatment is to improve the mechanical properties of the workpiece such as hardness, wear resistance and strength.
Spray the paint evenly on the surface of the workpiece with a spray gun, which is convenient, fast and convenient to use.
Spray the powder evenly on the surface of the workpiece with a spray gun and bake in the oven. Sprayed plastic workpieces have better wear resistance and corrosion resistance.
Chemical surface treatment is a commonly used method to produce an oxide film on the surface of the metal to isolate the air and achieve the purpose of rust prevention.
Special inks form text or patterns on the surface of the workpiece through a special grid. Screen printing has a wide range of applications, long-lasting color, and quick and convenient operation.
The optical principle is used for surface treatment; the laser beam can permanently mark the surface of the workpiece and has a variety of shapes.