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1. The first is the custom metal stamping parts related to our daily life of us, and the stamping parts for kitchen utensils. It mainly refers to the pots and pans commonly used by our daily life.
Pot molding as far as I know there are two methods, one stamping, cutting a good plate on the appropriate mold directly impact molding; The other is called metal spinning, which also uses a plate, fixed on a lathe for rotation, and then uses a mold to bend the epitaxial metal a little bit.
Metal spinning is an important method for making axisymmetric hollow revolving bodies such as circles and cones. Of course, it can also be used for the production of round pots (circles only).
Kitchen utensils sheet metal stamping has its own characteristics. The materials of kitchen utensils should be selected according to the design rules of kitchen utensils and the needs of use under the premise of complying with fire protection and hygiene.
Take our company’s kitchen utensils sheet metal stamping materials as an example: freezers, refrigerators, wine cabinets, and beverage cabinets are mainly Q235 cold plates of 0.6 ~ 1.0mm (powder after forming); rear plates and bottom plates are galvanized with 0.6 ~ 0.8mm. The board is mainly used; the inner tank is made of 0.5mm embossed aluminum stamping skin.
Pure water machine, ice machine, water boiler, coffee machine (mostly with 0.8~1.0mm Q235 cold plate (powder spraying after forming), for water vapor, large temperature difference parts with galvanized sheet (powder spraying after forming) or galvanized sheet or 201 stainless steel. Stainless steel stamping fingerprint-free plate for the front accessible part.
Relatively speaking, ice machines are used more. The water heater table is made of 202 stainless steel machining, the decoration is made of a 6063-T5 aluminum alloy strip, and the water tank and pipes are made of 304 food-grade stainless steel.
2. Focus on Custom Metal Stamping and Metal Stamping Die Manufacturing
The second is electrical stamping parts, such as televisions, air conditioners, and washing machines, and these large home appliances, generally use cold-rolled steel and galvanized steel processing.
There are also small appliances such as rice cookers, kettles, etc.
3. There are also automotive metal stamping parts and precision stamping parts of vehicle accessories, as long as the steel is in the car, it belongs to the category of custom metal stamping parts;
In fact, the metal sheet is stamped, and the main processes are shearing, punching, cutting, and folding.
During the processing, the metal sheet stamping is subjected to artificial or mechanical stamping deformation, so that the sheet forms the set specifications and shapes. If you want to get more complex and durable ideal components, you can apply welding or additional processing on this basis.
It should be pointed out that the understanding and application of geometric knowledge are essential when using sheet metal stamping technology to process metal sheets. Since the processing objects of sheet metal stamping technology are mainly metal plates, the finished products are usually also called hardware components.
The machining process is to standardize the sheet metal stretching, bending, buttoning, stamping, etc., and ensure that the sheet from beginning to end remains the same thickness.
4. Finally, there is a special-purpose custom metal stamping part, which is used in the aerospace industry, called aerospace stamping parts, such as those used on rockets and space shuttles.
Aircraft sheet metal stamping manufacturing technology is an important part of aerospace manufacturing engineering and one of the important manufacturing technologies to realize the structural characteristics of aircraft.
The shell of modern aircraft is mainly a custom sheet metal stamping riveted structure, sheet metal parts account for about 50% of the number of aircraft parts, and custom sheet metal stamping process equipment accounts for 65% of the entire aircraft manufacturing process equipment.
In view of the structural characteristics of the aircraft and the unique production method, the aircraft custom sheet metal stamping manufacturing technology is different from the general mechanical manufacturing technology:
Aircraft sheet metal parts are of different sizes, complex shapes, different materials, and various varieties, with strict weight control and certain service life requirements, so compared with custom sheet metal stamping parts in other industries, aircraft sheet metal stamping parts manufacturing technology requirements are higher and more difficult.
Common Custom Metal Stamping Parts Materials
SPCC refers to the continuous rolling of steel ingot into steel coil or sheet of required thickness by the cold rolling mill. SPCC surface without any protection, exposure to the air is easy to be oxidized, especially in the humid environment, the speed of oxidation, dark red rust, in use to spray paint, electroplating or other protective surface.
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 in a continuous electro-galvanizing production line.
SECC not only has the mechanical properties and similar processability of ordinary cold-rolled steel sheets but also has superior corrosion resistance and decorative appearance.
It has great competition and substitution in the market of electronic products, home appliances, and furniture. For example, the commonly used computer case is SECC.
SGCC refers to the semi-finished product after hot pickling or cold rolling, after cleaning, annealing, immersed in the temperature of about 460°C melt zinc tank, the steel sheet plated with zinc layer, and then after quenching and leveling and chemical treatment.
SGCC material is harder than SECC material, has poor ductility (avoiding deep pumping design), a thicker zinc layer, and poor weldability.
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), has very good mechanical properties, has no heat treatment hardening phenomenon, and has no elasticity.
The content of Cr (chromium) is lower than that of SUS304, and the corrosion resistance is poor, but after cold working, it can obtain good tensile force and hardness in stamping processing and has good elasticity. It is mostly used for shrapnel springs and anti-EMI.