Sheet metal enclosures have long been a prominent method in the manufacturing industry, especially for various electronic products that require durable and long-lasting housing. When it comes to sheet metal processing, several key factors must be taken into account. 

Let's delve into some of the most critical considerations:

1. CNC Bending:

   When engaging in CNC bending, the choice of tooling and die grooves depends on the dimensions and material thickness specified in the drawings. Selecting the lower die is crucial to prevent any collision or deformation of the product and tools. It's essential to 

remember that different workpieces may require varying types of lower dies, which are chosen based on the thickness of the material.

   Additionally, the sequence of CNC bending should be followed. The general rule is to start with inner bending before moving to outer bending, small sizes before large ones, and special features before general ones. If any workpieces require edge crimping, they 

should first be bent to an angle of 30° to 40° and then flattened using suitable dies.

2. Surface Treatment:

   After completing CNC bending, riveting, or other processes, the workpiece should undergo surface treatment. The method of surface treatment varies depending on the type of sheet metal. For cold-rolled sheets, electroplating is commonly performed before 

painting. A phosphating process is carried out before electroplating to ensure proper adhesion. The process involves cleaning the electroplated sheet's surface and degreasing it before painting.

   Stainless steel sheets (including mirrored, frosted, and brushed finishes) can undergo brushing before CNC bending and may not require painting. If painting is necessary, a thorough surface preparation, including abrasive treatment, is performed. Aluminum 

sheets are typically subjected to oxidation treatment. The choice of oxidation background color depends on the desired paint color.

3. Sequential Processing:

   In the sheet metal enclosure processing workflow, workpieces typically move to the next operation after material cutting. The choice of the subsequent operation depends on specific processing requirements and the nature of the workpiece.

   These operations may include CNC bending, riveting, flange threading, welding, bulging, and gap segmentation. After one or two rounds of CNC bending, nuts or bolts may need to be pressed. It's important to consider processing features such as bulges and 

gap segments early in the sequence to avoid interference with other processes, ensuring that the required operations can be completed. When there are hooks on the top cover or lower shell, and welding is not feasible after CNC bending, pre-processing is necessary.

Guangdong Dongji Intellingent Device Co.,Ltd. is a large sheet metal processing company located in Jiangmen, the hometown of overseas Chinese. With over a decade of experience, we specialize in sheet metal solutions. Our extensive capabilities include laser 

cutting based on provided designs, and we maintain our in-house sheet metal production lines, painting facilities, assembly lines, and a dedicated engineering team. We excel in customizing various sheet metal products, such as machine enclosures, equipment 

casings, stainless steel components, aluminum products, metal items, distribution cabinets, fireboxes, environmental equipment enclosures, barbecue grills, tool cabinets, advertising stands, electrical assembly, and intelligent devices, among others.

In Conclusion:

Achieving precision and quality in sheet metal enclosure processing requires meticulous attention to detail and adherence to specific workflows. At Guangdong East Ji Intelligent Equipment Co., Ltd., we prioritize quality, advanced technology, and a skilled team 

to ensure that every sheet metal product we manufacture meets the highest standards. With our one-stop service approach, we take care of everything from design customization and production to assembly and post-sales support, making us your trusted partner 

for all your sheet metal fabrication needs.