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Differences between precision sheet metal processing and traditional sheet metal processing
Published on:
2025-04-22
Precision sheet metal processing achieves a breakthrough in accuracy limits (±0.1mm vs 1mm), equipment intelligence (CNC rate over 80% vs traditional equipment dominance), and value positioning upgrade (high value-added customization vs low-cost mass production), forming a technological gap compared to traditional sheet metal. Its core advantage lies in meeting the modern industry's demands for high precision, high efficiency, and high flexibility, becoming a key supporting technology in high-end manufacturing fields such as 5G, medical, and aerospace.
The core differences between precision sheet metal processing and traditional sheet metal processing lie in five dimensions: processing accuracy, equipment and technology, application fields, production modes, and technological intelligence. The detailed analysis is as follows:
1. Processing Accuracy: The leap from millimeter level to sub-millimeter level
Traditional Sheet Metal: Dimensional tolerance range is usually between 0.2~1mm, suitable for scenarios with lower accuracy requirements, such as cabinets and ordinary enclosures. Core indicators like bending accuracy and cutting error are difficult to break the millimeter-level limit.
Precision Sheet Metal: Tolerance range ≤0.2mm, core indicators such as bending accuracy and cutting error are controlled within ±0.1mm, laser cutting flatness ≤0.1mm, bending angle error ≤0.1°. For example, the processing of 5G base station filter enclosures must meet such stringent standards to ensure signal transmission stability.
2. Equipment and Technology: From traditional machinery to CNC intelligence
Traditional Sheet Metal: Relies on conventional equipment such as ordinary punch presses, hydraulic shears, and angle openers. The process mainly involves simple punching and bending, making it difficult to achieve complex microstructure processing (such as forming ultra-thin sheets of 0.5mm). Surface treatment is mostly conventional sandblasting and electroplating, with roughness (Ra) ≥0.8μm.
Precision Sheet Metal: Uses high-precision CNC equipment such as fiber laser cutting machines, CNC bending machines, TIG welding workstations, etc., supporting multi-angle adaptive forming of special-shaped parts, ultra-thin sheet processing (below 0.5mm), and medical-grade polishing (Ra ≤0.4μm). For example, aerospace sensor enclosures require multi-angle precision connections through CNC bending, and surface anti-corrosion electrochemical treatment can extend service life to over 10 years.
3. Application Fields: From standardization to high value-added customization
Traditional Sheet Metal: Focuses on mass production of standardized products, such as distribution boxes and shelves, reducing unit cost by 20%~30%, but with weak flexible production capacity, making it difficult to adapt to rapidly iterating market demands.
Precision Sheet Metal: Suitable for high value-added fields such as medical device brackets (e.g., surgical instruments), 5G base station filters, aerospace sensor enclosures, etc. For example, medical device brackets require precision sheet metal to achieve a combination of lightweight and high strength, ensuring surgical operation accuracy; 5G base station filter enclosures must meet dual requirements of electromagnetic shielding and heat dissipation.
4. Production Mode: From mass production to flexible customization
Traditional Sheet Metal: Mainly mass production relying on mold opening, with long production cycles (usually several weeks), and high mold costs, limiting the possibility of small batch customization.
Precision Sheet Metal: Supports orders starting from 50 pieces, with a 48-hour rapid prototyping cycle, achieving efficient multi-variety, small-batch production through CNC equipment and flexible production lines. For example, new energy vehicle battery boxes need to quickly adjust dimensions according to different models, and the flexible production capability of precision sheet metal can shorten the R&D cycle by more than 30%.
5. Technological Intelligence: From experience dependence to AI empowerment
Traditional Sheet Metal: Manual operations account for over 40%, relying on experience for debugging, resulting in large quality fluctuations. For example, traditional bending requires manual adjustment of trapezoidal screws, with an error rate as high as 5%.
Precision Sheet Metal: AI visual inspection systems achieve a 99.2% defect recognition rate, robot welding penetration rate reaches 65%, scrap recycling rate ≥92%, and waterjet cutting energy consumption is reduced by 40%. For example, optimizing laser cutting paths through AI algorithms can reduce material waste by 15% while increasing cutting speed by 20%.
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