Introduction and application of sheet metal processing

Sheet metal processing is a hub technology that sheet metal technicians need to grasp, and it is also an important process in sheet metal product forming. Sheet metal processing includes traditional cutting, blanking, bending, forming and other methods and process parameters, as well as various cold stamping, die structures and process parameters, various equipment working principles and operating methods, and new stamping technology And new technology. Part metal sheet processing is called sheet metal processing.

Introduction:

Sheet metal processing is called sheet metal processing. Specifically, for example, the use of plates to make chimneys, iron barrels, fuel tanks, oil tanks, ventilation pipes, elbows, elbows, squares, funnels, etc. The main processes include cutting, bending, bending, forming, welding, riveting, etc. Certain geometric knowledge. Sheet metal parts are thin sheet metal parts, that is, parts that can be processed by stamping, bending, stretching, and other means. A general definition is a part with a constant thickness during processing. Corresponding to castings, forgings, machining parts, etc.

Application:

The processing steps of processing parts in the sheet metal workshop are product preliminary tests, product processing trial production, and product batch production. During the trial production steps of product processing, it is necessary to communicate with customers promptly, and after obtaining the evaluation of the corresponding processing, the product can be mass-produced. 

Laser drilling technology is the earliest practical laser technology in laser material processing technology. Laser drilling in the sheet metal workshop generally uses pulsed lasers, which have higher energy density and shorter time. It can process small holes of 1μm. It is especially suitable for processing small holes with a certain angle and thin material, and it is also suitable for processing strength and hardness. Deep holes and tiny holes in parts of higher or more brittle and softer materials.

The laser can realize the drilling of the combustor parts of the gas turbine, and the drilling effect can realize the three-dimensional direction, and the number can reach thousands. Perforated materials include stainless steel, nickel-chromium-iron alloys, and HASTELLOY-based alloys. Laser drilling technology is not affected by the mechanical properties of the material, and it is easier to realize automation.

With the development of laser drilling technology, the laser cutting machine has realized automated operation. The application in the sheet metal industry has changed the processing method of traditional sheet metal technology, realized unmanned operation, greatly improved production efficiency, and realized the whole process. The automatic operation has promoted the development of the sheet metal economy and has improved the punching effect to a higher level, and the processing effect is remarkable.

Commonly used materials:

⒈Galvanized steel sheet SECC

The substrate of SECC is an ordinary cold-rolled steel coil, which becomes an electro-galvanized product after degreasing, pickling, electroplating, and various post-treatment processes on the continuous electro-galvanizing production line. SECC not only has the mechanical properties and similar processability of general cold-rolled steel sheets but also has superior corrosion resistance and decorative appearance. It is highly competitive and replaceable in the market of electronic products, home appliances, and furniture. For example, SECC is commonly used in computer cases.

⒉Ordinary cold-rolled sheet SPCC

SPCC refers to the continuous rolling of steel ingots through cold rolling mills into steel coils or sheets of required thickness. There is no protection on the surface of SPCC, and it is easily oxidized when exposed to the air, especially in a humid environment, the oxidation speed is accelerated, and dark red rust appears. The surface should be painted, electroplated, or other protections during use.

⒊Hot dip galvanized steel sheet SGCC

Hot-dip galvanized steel coil refers to the semi-finished product after hot-rolling and pickling or cold-rolling, which is cleaned and annealed, and then immersed in a molten zinc bath at a temperature of about 460°C so that the steel sheet is coated with a zinc layer and then quenched and tempered It is made by leveling and chemical treatment. SGCC material is harder than SECC material, has poor ductility (avoid deep drawing design), thicker zinc layer, and poor electric weldability.

⒋Stainless steel SUS304

One of the most widely used stainless steels. Because it contains Ni (nickel), it has better corrosion resistance and heat resistance than Cr (chromium) steel. It has very good mechanical properties, no heat treatment hardening phenomenon, and no elasticity.

⒌Stainless steel SUS301

The content of Cr (chromium) is lower than that of SUS304, and the corrosion resistance is poor. However, it can obtain good tensile force and hardness in stamping after cold working and has good elasticity. It is mostly used for shrapnel springs and anti-EMI.