The range of applications of sheet metal fabrication


Sheet metal products have the characteristics of light weight, high strength, electrical conductivity, low cost and good mass production performance. Widely used in electronic devices, communications, automotive industry, medical equipment and other fields. For example, in the computer case, mobile phone, MP3 and sheet metal are indispensable components. With the wider application of sheet metal, the requirements for sheet metal are also becoming higher and higher. In fact, the overall requirements for sheet metal parts are not very high and only focus on assembly, while the requirement for precision sheet metal is to strictly enforce tolerances. If the out-of-tolerance power assembly fails, its tolerance requirements are also higher than the normal level. Accuracy requirements sheet metal fabrication will be stricter. Since sheet metal products are widely used in almost all manufacturing industries, >>> major industries include: communication electronics, automotive, motorcycle, aerospace, instrumentation, household appliances, etc. Under normal circumstances, most of the metal forming parts of various electromechanical products use sheet metal technology, of which stamping technology is suitable for mass production, and CNC sheet metal technology is suitable for precision production. . my country’s sheet metal fabrication industry has expanded to the world and has a certain market share in many customers around the world. Sheet metal fabrication operations are increasingly moving towards high automation. In the future, the application of sheet metal processing will become more and more extensive.

The main application scope of sheet metal parts:

Sheet metal products have the characteristics of light weight, high strength, electrical conductivity, low cost and good mass production performance. For example, in computer cases, cell phones and MP3s, sheet metal is an essential component. Also used in the manufacture of medical devices, car and truck (van) bodies, aircraft fuselages and wings, medical tables, building roofs (architecture) and many other applications. In short, sheet metal has a very wide range of uses, which brings much convenience to our production and life.

So where are these parts made?

Small and large sheet metal fabrication plants. Sheet metal operations are often required in parts manufacturing units and in the industrial field. In fact, this statement is relatively general, as it covers a large number of process methods and parameter information during manufacturing. This manufacturing job also places high demands on the operator. The operator should understand the sheet metal manufacturing process and be familiar with the application of sheet metal equipment and the method of entering parameter information. Simply put, sheet metal fabrication mainly includes fabrication methods such as laser cut a service or CNC shearing, bending, stamping and punching. It is necessary to select the appropriate operation method according to the actual needs. The sheet metal fabrication process directly determines the quality of our sheet metal fabrication.

Characteristics of sheet metal manufacturing process:

Sheet metal is thinner than steel, so it is lighter. The sheet metal fabrication adopts cold working technology, so it has relatively large strength and is very hard. In addition, sheet metal and steel can pass current and have good electrical conductivity. And in terms of price, it has good value for money compared to other steelmaking methods.

Growing demands on sheet metal fabrication:

As the application of sheet metal becomes more and more extensive, the requirements for sheet metal also become more and more high. In fact, the overall requirements of sheet metal parts are not very high, but only pay more attention to assembly, but the requirement of precision sheet metal is to strictly enforce tolerances. A poor assembly is not qualified, and its tolerance requirements are also one level higher than normal, so the requirements for precision sheet metal fabrication will be more stringent.

Sheet metal fabrication is the cold and hot cutting or forming of sheet metal materials, aluminum profiles and pipe fittings without changing their cross-sectional characteristics. Then the assembly is carried out by electric welding, riveting and screwing, and the mode of production and manufacture of the specified metal structure is produced. The key involves a variety of types of technical work, such as milling, cutting, stamping, drilling of metal materials, electric welding, heat treatment, surface treatment, riveting and assembly.

Application of sheet metal fabrication: Sheet metal fabrication has a series of advantages such as manufacturing efficiency, stable quality, low cost, and can produce and manufacture complex products and parts. Therefore, it is widely used in the application fields of mechanical equipment, vehicles, airports, light industry, motors, household appliances, electrical products and their daily necessities, and occupies a key influence . According to the survey, sheet metal parts account for 60% to 70% of auto parts; Airfield sheet metal parts account for more than 40% of all machine parts; Mechanical and electrical engineering, instruments and equipment, and dashboard sheet metal parts account for 60%-70% of the number of production and manufacturing accessories; Sheet metal parts represent over 85% of electronic equipment accessories; The sheet metal parts of everyday household appliances in the sales market account for more than 90% of the total metal fabrication.

With the development of science and technology and the development of manufacturing technology, a large number of new technologies such as sheet metal CAD, cam and CAE have been applied. Many new machines and equipment such as cutting, forming, electric welding and CNC machine tool welding (such as optical fiber laser cuttingplasma cutting machine, water knife cutting machine, NC machine tool rotary head press, NC machine tool sheet metal bending, welding manipulator, robot welding, etc.) have been widely used in various fields.

At this stage, sheet metal manufacturing technology is developing rapidly, fully automatic, precision and stability. A variety of high-speed presses, flexible stamping die manufacturing (FMS) with the functions of fully automatic production and manufacturing, fully automatic conveying and unloading, and presses for sheet metal fabrication of various machine tools to numerical control have successively obtained the development, design and development trend. It can be predicted that the technical strength of China sheet metal manufacturing may increase further, the main uses of prefabricated sheet metal components may become more widespread, and the total number of applications may be larger and larger.

Because most of the sheet metal fabrication is the production and manufacture of cold or hot separating and forming of raw materials without changing the sectional characteristics of sheet materials, aluminum profiles and pipe fittings. In addition, the metal material produced causes plastic deformation below the manufacturing hardening temperature, so it does not cause online laser Chopped off. It can be made into a variety of products with different shapes, specifications and characteristics, and the steel structure products produced and fabricated have high compressive strength and bending stiffness, which can make full use of its ability carrying. In the whole sheet metal structure production and manufacturing process, each accessory constituting the structure can be assembled into prefabricated parts according to the position, specification correlation and precision rules, and according to the connection methods such as the electric welding, riveting, biting or expanding.

Therefore, the coordination ability of the design scheme is large. Based on the above analysis, the main characteristics of sheet metal fabrication are as follows:

① Compared with the manufacture of forgings and castings, prefabricated sheet metal components have the advantages of light weight, saving metal composites, simple manufacturing process, reducing product cost and a reduction in production costs.

② Most of the prefabricated sheet metal components made by laser welding have low manufacturing precision and large welding deformation, so there is a large amount of deformation and correction after welding.

③ Because the welded assembly cannot be disassembled and connected and cannot be repaired, it is necessary to adopt useful assembly methods and assembly procedures to reduce waste. On-site assembly is often required for large, medium or big products, so you have to try it in the factory first. When testing, the detachable connection should be used to temporarily replace the non-detachable connection.

④ In the whole assembly process, it is often necessary to select, adjust, and accurately measure and test the quality of the product many times.

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