Sheet metal processing is a fundamental manufacturing process. There are significant differences between ordinary sheet metal and precision sheet metal in terms of accuracy, equipment, materials, application, and cost. Correctly distinguishing them can help with rational selection and cost optimization.
1、 Processing accuracy
Core differences. The tolerance of ordinary sheet metal is 0.2mm to 1mm, which is greatly affected by manual labor and has poor consistency; Precision sheet metal tolerance ≤ 0.2mm, some processes reach ± 0.1mm, and critical dimensions are ± 0.05mm, directly determining assembly quality.
2、 Equipment and Process
Ordinary sheet metal relies on traditional punching machines and manual bending machines, with low automation and manual operation; Precision sheet metal adopts CNC laser cutting machines, CNC bending machines, robots, etc., computer-controlled, with high positioning accuracy, supporting programming and rapid changeover, and can process complex parts.
3、 Material and Process Capability
Low carbon steel and aluminum plates are commonly used in ordinary sheet metal, and the process mainly involves cutting, punching, and bending; Precision sheet metal can process high-strength steel, stainless steel, titanium alloys, etc., achieving complex processes such as micro pores (minimum aperture plate thickness 0.2 times), precision flanging, embossing, welding, etc., and completing multiple processes at once.
4、 Application Fields
Ordinary sheet metal is used for general components such as cabinets, shells, ventilation ducts, etc; Precision sheet metal is used in high-end fields such as medical equipment (CT, analyzers), communication (5G base stations, shielding boxes), aerospace (engine components), and new energy vehicles (battery trays, body parts).
5、 Cost and Cycle
Ordinary sheet metal equipment has low investment but high labor costs, suitable for large quantities of simple parts and long cycles; Precision sheet metal equipment requires a large investment, but has high automation, low proportion of manual labor, fast changeover, suitable for multiple varieties and small batches, short cycle, good consistency, low scrap rate, and long-term comprehensive cost optimization for complex and miscellaneous parts.