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Views: 0 Author: Site Editor Publish Time: 2024-12-27 Origin: Site
Sheet metal material is the basis of sheet metal parts and has distinct characteristics. First of all, common sheet metal materials such as cold-rolled steel plate, galvanized steel plate and aluminum plate have good plasticity. They can be plastically deformed without breaking under a certain external force, which makes it possible to shape various complex shapes by bending, stretching and curling. For example, automobile body panels are mostly made of cold-rolled steel plates, which are shaped by stamping dies to form smooth curves and precise radians, showing beautiful and aerodynamic shapes.
Secondly, the sheet metal material has certain strength. Different kinds of sheet metal materials have different strengths to meet diverse application requirements. For example, sheet metal parts used for industrial equipment housings need to be made of high-strength materials to ensure that they can withstand external forces such as collision and extrusion during daily use and handling, protect internal precision parts from damage, and maintain stable operation of the equipment.
Furthermore, some sheet metal materials also have excellent anti-corrosion performance. The galvanized layer on the surface of galvanized sheet is like a solid protective shield, which can effectively isolate air and moisture, slow down the corrosion rate of metal, make it widely used in outdoor facilities, electrical control cabinets and other scenes that require high corrosion resistance, and prolong the service life of products.
In electronic field, sheet metal parts play a key role. The main computer case, display case and server cabinet are mostly made of sheet metal. These sheet metal parts not only provide physical protection for internal electronic components, block external interference such as dust and water vapor, but also give consideration to heat dissipation. Through carefully designed ventilation holes, heat dissipation fins and other structures, the heat generated by electronic components during operation can be dissipated in time by using the principle of air convection, so as to ensure the stable operation of the equipment at a suitable temperature and improve the reliability and service life of electronic equipment.
In the machinery manufacturing industry, sheet metal parts often appear as protective devices. For example, the protective cover of the machine tool is made of solid sheet metal material through bending, welding and other processes. It can prevent operators from accidentally touching high-speed rotating tools, transmission parts, etc., and avoid industrial accidents; At the same time, it can also stop the chip splashing in the processing process, maintain a clean working environment and ensure the safe and orderly production.
Sheet metal parts can also be seen everywhere in home appliances. Fridges, side panels of air conditioners, door panels, and shells of washing machines are all sheet metal parts. They should not only meet the design requirements, present a smooth, flat and beautiful surface to attract consumers' attention, but also have sufficient structural strength to withstand the stress caused by switching, handling and other operations in daily use, and provide solid support for the functionality and durability of household appliances.
Cutting is the first step in sheet metal processing. Laser cutting has become one of the mainstream choices in modern sheet metal processing because of its advantages of high precision, high speed and narrow incision. It can accurately cut complex contours according to design drawings, and it can be easily controlled whether it is fine holes or irregular curves, with small heat affected zone and slight material deformation. Plasma cutting is suitable for thicker sheet metal materials. High-temperature plasma arc is used to melt and blow away the metal to achieve the purpose of cutting, but after cutting, the incision needs to be polished to eliminate the oxide layer and roughness.
Bending process directly determines the shape accuracy of sheet metal parts. The selection of bending die is very important, and it should be accurately matched according to the bending angle, radius and material thickness of the parts. During the operation, it is necessary to accurately control the bending pressure, speed and bending depth to avoid problems such as bending cracks and excessive rebound. Through the programming control of CNC bending machine, the efficient and accurate execution of bending process in mass production can be realized, and the bending quality of each part can be ensured to be consistent.
For some sheet metal parts with complex structures, welding is the key step of assembly and molding. Argon arc welding is widely used in sheet metal welding because of its high welding quality, beautiful weld seam and good gas protection effect. When welding, welding current, voltage and welding speed should be strictly controlled to ensure good weld fusion and no defects such as porosity and cracks. At the same time, reasonable welding sequence can effectively reduce welding deformation, and further improve welding accuracy through rigid fixation, pre-deformation and other technological means, so that sheet metal parts can finally meet the design requirements.
Sheet metal parts play a key role in many industries by virtue of their material characteristics and diverse processing technologies. A deep understanding of the knowledge of sheet metal parts is helpful to promote the innovation and optimization of products in various fields and meet people's growing production and living needs.
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