The low-voltage electrical industry sheet metal products are classified into five categories : board room / container integrated system, cabinet, chassis, frame and small hardware.  

Features of general cabinet sheet metal products:  

The general-purpose sheet metal parts are also equipped with profiles such as the main nine-fold profiles, sixteen-fold profiles, other profiles and so on. Can be used to develop different products. The material of the product is generally cold rolled sheet, hot rolled sheet, pre-galvanized sheet, stainless steel sheet and aluminum sheet 5052 . The product consists essentially of a base, a frame, a door panel, side panels and a top cover. Figure 3 shows a nine-fold profile and a sixteen-fold profile.  

Sheet metal base:  

The base is usually made of T2.5 or T2.5 or more plate bending or channel welding. The surface treatment process uses hot dip galvanizing or dusting. Figure 5 shows an example of welding a base product sample. The base welding is based on the material of the product, using argon arc welding or carbon dioxide protection welding; welding process parameters: welding machine current, voltage, wire material, diameter, wire feeding speed, welding method, direction and length of welding segment.  

Sheet metal framework:  

The frame is usually formed by bending or splicing (riveting or screwing) of T1.5 or T1.5 or more, and the surface treatment process is sprayed or not treated (except cold-rolled steel). The design of the frame is generally assembled or welded; the welding is based on the material of the product, using argon arc welding or carbon dioxide protection welding; welding process parameters: welding machine current, voltage, wire material, diameter, wire feeding speed, welding method, direction, Weld length, etc. The frame welding focuses on controlling the diagonal tolerance and deformation, and the batch requires higher reliability for the prefabricated welding tool.  

钣 Golden Gate Board:  

The door panel is usually made of T1.2 or T1.2 or more plate bending welding (welding corner edge), the surface treatment process is sprayed, and Figure 7 is the mesh door panel. Door plate welding is based on different materials, argon arc welding, carbon dioxide protection welding or flat welding; welding process parameters: welding machine current, voltage, wire material, diameter, wire feeding speed, welding method, direction and length of welding segment. For the mesh type door panel, pay attention to the welding stress deformation of the controlled welding. Figure 7 mesh door panel  

Sheet metal top cover:  

It is usually formed by bending or welding (welding corners) of T1.0 or T1.0 or more, and the surface treatment process is spray coating. The top cover is generally divided into indoor type and outdoor type; welding is based on different materials, using argon arc welding or carbon dioxide protection welding; welding process parameters: welding machine current, voltage, wire material, diameter, wire feeding speed, welding method, direction , the length of the welding section, etc. The effect of the top cover welding on the flatness and diagonal tolerance of the outdoor top cover is controlled. Excellent fixture solutions will significantly improve welding quality and efficiency.

Sheet metal internal mounting:  

Internal mounting parts are usually divided into structural parts and components, and are required to operate in strict accordance with the " xx Product Assembly / Electrical Installation Guide". After the electrical equipment is completed, it is generally necessary to complete various performance tests.

Sheet metal features trend:  

Through the decomposition of the above components and the interpretation of the module, it can be seen that the sheet metal products have the following three characteristics:  

(1) Profile. Conducive to the platform level of the product to expand the design, mass production helps to reduce costs.

(2) Modular. According to the characteristics of each module, flexible design, can be purchased and assembled by modules, which helps to shorten the procurement cycle.  

(3) Serialization. According to the different configuration requirements of the platform products, corresponding development, meet the system requirements, form a series of products, curing process, mold production, improve production efficiency and shorten the delivery cycle.  

Conclusion:  

In short, the development of the low-voltage electrical industry has shown a steady development trend, and the sheet metal production suppliers supporting the development of the low-voltage electrical industry have more thoughts, starting with the design of new products, the development of new processes, and the development of automation of production. Improve the utilization rate of equipment and the turnover rate of inventory, and push for “lean production”. With the introduction of the new concept of “Industry 4.0 ”, we will promote the production from “manufacturing to production” and make good use of network resources to get out of the market. The status quo of processing and processing "micro-profit" makes the sheet metal production in low-voltage electrical appliances to a higher level. Facing opportunities and challenges, it is an irresistible trend to provide customers with safer, smarter and greener electrical solutions.

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