純電、電液混合折彎機:純電技術的妥協還是下一代過渡方案
針對大噸位折彎(≥300噸)場景下純電設備功率不足的瓶頸,電液混合折彎機成為折中選擇。其創新點在于“伺服電機+蓄能器”協同驅動:低負載階段(板材厚度<5mm)由伺服電機直驅實現零排放;高負載階段(厚度≥8mm)啟動液壓蓄能器輔助供能,峰值壓力可達35MPa。隴博智能科技有限公司***推出的Hybrid-Bend 1250機型,通過智能負載分配系統,使綜合能耗較純液壓機型降低40%,同時保留液壓系統的穩定性(重復定位誤差±0.02mm)。市場數據顯示,國內電液混合機型銷量占比達28%,主要應用于船舶甲板、風電塔筒等重型結構件加工。爭議點在于環保性——盡管能耗下降,但液壓單元仍需礦物油介質,歐盟CE認證已要求20年后新款混合機型必須配備油液回收裝置。
In response to the bottleneck of insufficient power of pure electric equipment in the large-tonnage bending (≥300 tons) scenario, the electro-hydraulic hybrid bending machine has become a compromise choice. Its innovation lies in the "servo motor + accumulator" collaborative drive: in the low-load stage (sheet thickness < 5mm), the servo motor directly drives to achieve zero emissions; in the high-load stage (thickness ≥ 8mm), the hydraulic accumulator is activated to assist in energy supply, with a peak pressure of up to 35 MPa. The latest Hybrid-Bend 1250 model launched by Longbo Intelligent Technology Co., Ltd. uses an intelligent load distribution system to reduce the overall energy consumption by 40% compared to pure hydraulic models, while maintaining the stability of the hydraulic system (repetitive positioning error ± 0.02mm). Market data shows that the sales share of electro-hydraulic hybrid models in China has reached 28%, mainly used for processing heavy structural components such as ship decks and wind turbine towers. The controversy lies in environmental friendliness - although energy consumption has decreased, the hydraulic unit still requires mineral oil medium. The EU CE certification has required that new hybrid models must be equipped with an oil recovery device after 20 years.