A Sustainable Process: Low Energy Consumption, Low Emissions, and High Recyclability

A Sustainable Process: Low Energy Consumption, Low Emissions, and High Recyclability

Against the backdrop of "dual carbon" goals, the green attributes of the stamping process have become increasingly prominent. Compared to the material waste associated with machining (where chips account for over 50% of the material), stamping’s "near-net-shape" capability boosts material utilization to over 80% and cuts material consumption per ton of parts by 40%–60%. Unlike casting, which is energy-intensive (requiring melting temperatures exceeding 1,500°C), stamping requires energy only to overcome the work of plastic deformation, reducing energy consumption per unit by 50%–70% (for instance, stamping consumes approximately 0.5 kWh/kg of steel, whereas casting consumes about 1.5 kWh/kg).

Even more critical is the advantage of "closed-loop recycling" for stamping scrap: the offcuts generated during stamping (accounting for 15%–20% of the material) can be directly remelted. Because the material does not undergo high-temperature phase changes, there is minimal loss in material properties, achieving a 100% recycling rate. Data from a home appliance manufacturer shows that its stamping workshop recovers 2,000 tons of scrap annually—equivalent to avoiding the extraction of 6,000 tons of iron ore and reducing carbon emissions by 3,000 tons.

Furthermore, the trend toward "dry processing" in stamping (utilizing self-lubricating dies or minimum quantity lubrication technology) further minimizes the use of cutting fluids; one automotive parts plant reduced waste fluid discharge by 120 tons and cut environmental treatment costs by 800,000 yuan annually by adopting dry stamping. In the new energy vehicle sector, stamped aluminum alloy battery casings offer significant weight savings (40% lighter than steel casings), enabling a 5%–8% reduction in overall vehicle energy consumption and indirectly lowering carbon emissions. This full-lifecycle green advantage—spanning from raw material to finished product and finally to recycling—positions stamping as a model process for sustainable manufacturing.