Non-standard sheet metal processing refers to the process of designing drawings or samples according to the specific requirements of customers for products,
and the factory producing according to the drawings. Because the customer’s drawings are often not detailed enough, or in order to save materials and reduce costs, there are many unconventional places in the product structure, which requires non-standard sheet metal processing. The techniques of non-standard sheet metal processing are complex and diverse, involving multiple detailed requirements. The following is a detailed introduction to these requirements:
1. Conversion and refinement of design drawings
One step of non-standard sheet metal processing is to convert the drawings or samples provided by the customer into engineering drawings. During this process, the staff needs to carefully check the dimensions, tolerances and special requirements on the drawings, and the drawing information is accurate. For unclear or ambiguous parts in the drawings, timely communication should be made with the customer to avoid processing errors caused by misunderstandings. In addition, the drawings need to be refined to clarify the various processing steps and process requirements.
2. Material selection and utilization
Material selection is an important link in non-standard sheet metal processing. When selecting a sheet, it is necessary to comprehensively consider the cost, material utilization rate and product performance requirements. For example, for parts that need to withstand high pressure, materials with good strength should be selected; for parts that need to be corroded, stainless steel materials that are not easy to corrode may need to be selected. In addition, attention should be paid to the thickness of the material to ensure the smooth progress of the bending and welding process. In terms of material utilization, material waste should be minimized and the utilization rate of materials should be improved.
3. Laser cutting and fine processing
Laser cutting is a common technology in non-standard sheet metal processing, with the advantages of good precision, good speed and low pollution. During the laser cutting process, attention should be paid to the stable operation of the equipment, and it is forbidden to approach the running equipment to prevent injury. After the cutting is completed, the cutting edge needs to be polished to remove burrs and sharp angles to improve the appearance and stability of the product. In addition, for parts that need fine processing, other processing methods should be used for further processing.
4. Bending and forming
Bending is one of the key steps in non-standard sheet metal processing. During the bending process, the length of the bending edge needs to be sufficient to avoid distortion of the product during bending. At the same time, attention should also be paid to the control of the bending angle and bending radius to ensure that the shape and size of the product meet the design requirements. For some parts with special shapes, special bending molds or tooling may be required for processing.
5. Welding and fixing
Welding is an important method for connecting multiple sheet metal parts together. During the welding process, it is necessary to select appropriate welding methods and welding materials to ensure the strength and sealing of the welding joint. At the same time, it is also necessary to pay attention to the control of welding deformation, and reduce welding deformation through the correct welding sequence and welding parameters. For some parts that need to accurately control the size, precision welding technology such as laser welding or electron beam welding may be required.
6. Surface treatment and decoration
After the non-standard sheet metal processing is completed, surface treatment is required to improve the product’s aesthetics and corrosion resistance. Common surface treatment methods include oxidation (anodization), electrophoretic coating, fluorocarbon spraying and sandblasting. Among them, oxidation treatment is suitable for the production of various small hardware products with complex shapes and non-standard mechanical parts; electrophoretic coating and fluorocarbon spraying can form a dense coating to improve the product’s corrosion resistance and aesthetics; sandblasting can remove surface dirt and oxide layers, and increase the product’s roughness and adhesion. In addition, spraying and electroplating decorative treatments can be performed according to customer needs.
7. Quality control and testing
In the process of non-standard sheet metal processing, strict quality control and testing are also required. This includes dimensional inspection, appearance inspection, and performance testing. Through quality control and testing, problems in the processing process can be discovered and corrected in time to ensure that the product quality meets the design requirements. At the same time, the processing technology can be optimized and improved according to the test results to improve production rate and product quality.
Therefore, the detailed requirements of non-standard sheet metal processing involve many aspects, including the transformation and refinement of design drawings, the selection and utilization of materials, laser cutting and detailed processing, bending and forming, welding and fixing, surface treatment and decoration, and quality control and testing. Only by mastering these skills and using them flexibly can high-quality non-standard sheet metal products be produced. Here, if you need to customize non-standard sheet metal parts in large quantities, you can choose Mulan Group. Mulan Group is a professional sheet metal manufacturing company in China. It has been engaged in the export trade of customized sheet metal products for 12 years. Its customers are spread over more than 30 countries and regions in the world, and it has a full range of certificates and qualifications. It has a fast turnover and can give you good business support.
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