[News Report] Against the backdrop of the global manufacturing industry accelerating its progress toward the "dual carbon" goals, powder metallurgy technology has become a key force driving traditional industries to "reduce carbon and increase greenery" by virtue of its green advantages, including a material utilization rate of over 95%, 40% lower energy consumption, and near-zero waste emissions. According to the latest statistics from the Ministry of Industry and Information Technology (MIIT), China's investment in the green transformation of the powder metallurgy industry increased by 65% year-on-year in 2023, and the carbon emission per unit product decreased by 28% compared with five years ago. Low-carbon powder materials represented by iron-based, aluminum-based and titanium-based materials have been applied on a large scale in new energy vehicles, photovoltaic equipment, hydrogen energy storage and transportation and other fields, helping China's manufacturing industry seize the initiative in the global low-carbon competition.
Process Innovation: From High Energy Consumption to Carbon-negative Manufacturing
At a national-level green factory in Suzhou, Jiangsu Province, the world's first powder metallurgy production line featuring "hydrogen-based shaft furnace + electric furnace short process" has been officially put into operation. The production line uses hydrogen to directly reduce iron ore to produce ultra-pure iron powder, replacing the traditional blast furnace ironmaking process. The carbon emission per ton of iron powder is reduced from 2.1 tons to 0.3 tons, and the waste heat generated during production can meet 80% of the plant's energy demand. The company's technical director stated: "We have achieved full-process carbon footprint tracking of iron powder production. The product carbon label shows that each kilogram of iron powder emits only 0.28kg of carbon dioxide, just one-third of similar products in the European Union."
At the same time, the integrated innovation of 3D printing and powder metallurgy is subverting the traditional manufacturing model. The "selective laser melting + cold isostatic pressing" composite process developed by a Shanghai-based enterprise shortens the manufacturing cycle of aero-engine blades from 6 months to 2 weeks, reduces material waste rate from 90% to 5%, and the performance of finished products reaches the level of forgings. The technology has been applied to the domestic CJ-1000A aero-engine, helping to improve its fuel efficiency by 15%.
Scenario Breakthrough: The Rise of "Powder Metallurgy+" Ecology in the New Energy Sector
The green attributes of powder metallurgy technology are highly compatible with the new energy industry. In the field of new energy vehicles, the "nanoporous silicon-carbon composite anode material" developed by an enterprise controls the pore structure through powder metallurgy process, enabling the energy density of lithium-ion batteries to exceed 400Wh/kg and the cycle life to exceed 2000 times. The relevant technology has entered the mass production stage. In the hydrogen energy field, titanium-based powder metallurgy hydrogen storage tanks have become the "core component" of hydrogen fuel cell vehicles due to their lightweight (60% lighter than steel tanks) and high safety, with a domestic market share of 75%.
More notably, powder metallurgy technology is reshaping the pattern of the photovoltaic industry. The "silver powder-glass powder composite paste" developed by an enterprise replaces traditional high-temperature sintering with powder metallurgy sintering process, increasing the conversion efficiency of solar cells by 0.3% and reducing the production cost per piece by 0.05 yuan. Based on the global annual installed capacity of 300GW, it can reduce carbon emissions by more than 5 million tons every year.
Global Competition and Cooperation: Chinese Standards Lead a New Paradigm of Green Manufacturing
Faced with technical barriers such as Europe and the United States' "carbon tariffs", China's powder metallurgy industry is seizing the right to speak through standard output. In 2023, the *Technical Specification for Life Cycle Assessment of Powder Metallurgy Products*, led by China, officially became an ISO international standard, filling the gap in the global green evaluation system for powder metallurgy. Meanwhile, leading enterprises are accelerating the layout of overseas green supply chains. A "zero-carbon powder metallurgy industrial park" built by an enterprise in Southeast Asia achieves 100% green power supply and carbon-negative production through rooftop photovoltaics, biomass boilers and carbon capture devices, and its products directly supply multinational enterprises such as Tesla and Siemens.
Industry experts pointed out that with the in-depth advancement of the "dual carbon" strategy, powder metallurgy technology will evolve from a single material preparation to the greening of the entire chain of "materials-process-equipment-recycling". It is estimated that by 2025, green products will account for more than 60% of China's powder metallurgy industry, driving the upstream and downstream industrial chains to reduce carbon emissions by more than 200 million tons, providing a replicable "Chinese model" for the green transformation of the global manufacturing industry.
From "black metallurgy" to "green intelligent manufacturing", powder metallurgy is writing a new industrial chapter in the low-carbon era with the power of technology. In this green competition concerning the future of mankind, the Chinese solution has pressed the "accelerator".
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