From "steel tailoring" to "precision intelligent manufacturing"
Sheet metal processing, this basic manufacturing industry known as the "Mother of Industry", is undergoing unprecedented changes. Driven by the wave of Industry 4.0, the new energy revolution and global carbon emission reduction goals, sheet metal workshops that traditionally rely on manual hammering and simple punching and shearing are being completely subverted by automated laser cutting, AI process optimization and digital twin technology. In 2023, the market size of China's sheet metal industry will exceed 1.2 trillion yuan, but the growth rate has dropped from an average annual average of 15% to 8% in the past. This change is both a challenge and an opportunity.
In the sheet metal workshop, 12 10,000-watt fiber laser cutting machines roar day and night, working with AGV robots to complete the entire process of cutting the body panels of a new energy vehicle within 90 seconds. Data shows that compared with traditional stamping technology, the accuracy of laser cutting is improved to ±0.05mm, and the material utilization rate jumps from 65% to 92%.
- Industry benchmark: Germany's TRUMPF launched the "SmartFactory" solution, which uses AI to optimize cutting paths in real time, reducing production line energy consumption by 40%.
- Breakthrough in China: Han’s Laser developed the world’s first “ultra-fast fiber laser” with a cutting speed of over 100m/min and successfully entered the Tesla Shanghai Gigafactory supply chain.
At Huawei's Songshan Lake base, engineers only need to input the 3D model of the product, and the AI algorithm can generate the optimal sheet metal process plan in 15 minutes, shortening the process verification that traditionally takes 3 days to 2 hours.
- Technology core: The "DeepSheet" system developed by the Institute of Optoelectronics, Chinese Academy of Sciences in Beijing, uses deep learning to learn millions of sheet metal cases, and the process error rate is controlled within 0.1%.
- Market impact: AI process optimization will increase the average profit margin of sheet metal companies by 5-8 percentage points.
The "Hydrogen-based Shaft Furnace" project at Baosteel Co., Ltd.'s Zhanjiang base was put into operation. It uses hydrogen to reduce iron ore and reduces carbon emissions by 90% compared with traditional blast furnaces. The "zero-carbon automotive sheet" developed by it has been supplied to BMW i5, NIO ET7 and other models.
- Policy pressure: The EU CBAM carbon border tax will be fully implemented in 2026, and the carbon cost of imported sheet metal products may increase by 20%-30%.
- Technological innovation: HBIS Group launched "carbon capture" steel plates, which reduce the carbon footprint of a single ton of steel to 0.4 tons by sequestering carbon dioxide in the production process, which is 15% lower than international standards.
Haier's COSMOPlat industrial Internet platform integrates upstream and downstream enterprises and connects the sheet metal scrap online auction system with renewable resource factories to achieve the recycling of 95% of leftover materials. Its Qingdao Smart Park reduces waste disposal costs by 12 million yuan every year.
- Model innovation: China Baowu cooperated with Ouye Cloud Platform to build a "carbon data sharing system for the steel industry chain", covering 1,200 small and medium-sized enterprises.
- International Benchmarking: Japan's JFE Steel has launched a "closed-loop water system" to reuse 100% of production wastewater, saving 400,000 tons of fresh water every year.
COMAC ARJ21 regional aircraft uses titanium alloy 3D printed fasteners, which reduces weight by 30% and increases strength by 40%.
- Technology Trend: GE Additive’s “Turbine Blade Embedded Cooling Channel” 3D printing technology extends the life of aeroengines by 50%.
- Market opportunities:The global Aerospace Sheet Metal composite materials market is expected to reach US$80 billion in the new year, with a compound annual growth rate of 9.7%.
In some sheet metal workshops, the same production line is processing precision structural parts for consumer electronics in the morning and can be switched to medical equipment shells in the afternoon, with the changeover time reduced from 2 hours to 15 minutes.
- System support: Siemens MindSphere industrial IoT platform enables real-time collection and dynamic optimization of production data, shortening the order delivery cycle by 35%.
- Customer value: Xpeng Motors has compressed the model modification cycle from 6 months to 45 days through a flexible sheet metal supply chain, and increased the inventory turnover rate by 200%.
The sheet metal battery case factory built by CATL in Hungary is equipped with a localized laser cutting center, which shortens the supply cycle for European car companies to 72 hours.
- Data highlights: In 2023, Chinese sheet metal companies’ investment in Southeast Asia and Africa will increase by 220% year-on-year, and more than 150 overseas production bases will be established.
- Challenges: The Indian government has introduced a "local manufacturing" policy, requiring foreign-invested companies to transfer 60% of their production capacity to India, which has led to project delays for some companies.
The "Technical Specifications for Intelligent Sheet Metal Processing" led by the Chinese Mechanical Engineering Society has officially become an ISO international standard. This is the first time that China has led the formulation of ISO standards in the sheet metal field.
- Technology output: Shenyang Xinsong Robot exports its domestic laser cutting control system to Germany at a price that is only 60% of that of European and American products, leveraging the European market share.
- Trade barriers: After the United States imposed an 18% tariff on Chinese sheet metal products, China's leading companies accelerated the deployment of production capacity in Mexico and Vietnam, and exports to the United States maintained a 15% growth.
Reborn in the midst of disruption—An answer to the times written for sheet metal workers. When laser beams replace the sound of hammering, and when AI algorithms replace empirical formulas, the sheet metal industry is experiencing phoenix nirvana. This is not only an iteration of technology, but also a reconstruction of the entire manufacturing value system - from pursuing scale effects to focusing on agile response, from relying on resource consumption to shifting to innovation-driven, and from a single manufacturing link to building an ecological network. The sheet metal masters of the future will be process experts who understand code, supply chain managers who are familiar with carbon footprints, and factory designers who are good at digital twins. There are no bystanders in this transformation. Only by actively embracing intelligence and greening can we remain invincible in the new round of global industrial reshuffle.
A: Sheet metal prefers small batches, multiple categories, and non-standard customization, using laser cutting + bending machines for flexible processing; stamping relies on fixed molds, which is suitable for large quantities of standardized parts. Mold costs are high and modifications are inflexible.
A: Laser cutting: arbitrary special-shaped contours, a small number of samples, thick plates, stainless steel/aluminum plates, strong flexibility and high single-piece cost;
CNC punching machine: mass production of regular round holes, square holes, blinds, and countersunk holes, with fast speed and lower unit cost.