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本文研究磨光弹簧钢丝冶金工艺特点,并分析工艺技术效果。认为钢丝表面缺陷是产生弹簧件疲劳断裂的主要原因之一,而磨光弹簧钢丝生产工艺能显著地改善弹簧件疲劳性能,也是生产高负荷、高疲劳性能弹簧钢丝的一种新工艺。通常碳素弹簧钢丝的生产工艺是铅浴处理后冷拔加工的。为提高弹簧钢丝性能,目前国外采用机械扒皮工艺。日本生产琴钢丝采用盘条扒皮工艺,英国生产空间用的派登脱碳素弹簧钢丝时,在钢丝生产的适当阶段进行机械扒皮。这种工艺能生产表面无缺陷的弹簧钢丝。我厂生产Φ2·6mm涡喷发动机辅机弹簧钢丝时,技术条件要求钢丝通条性能均匀,韧性好,表面无脱碳和任何缺陷。应用常规的铅浴冷拔工艺生产三批弹簧钢丝,性能均不合乎要求。为此,我们分析研究了国外应用扒皮技术生产弹簧钢丝的工艺特点:主要是能彻底消除盘条或钢丝表面的脱碳层,裂纹,折迭,麻点等缺陷,改善钢丝表面质量,从而诱导我们研究磨光弹簧钢丝的生产新工艺。在生产涡喷发动机辅机碳素弹簧钢丝时,此工艺收到明显的技术效果。
This paper studies the characteristics of polished steel wire metallurgy and analyzes the technical effects of the technology. It is considered that the surface defect of the steel wire is one of the main causes of the fatigue fracture of the spring member. However, the production process of the polished spring steel wire can significantly improve the fatigue performance of the spring member and is also a new process for producing the spring steel wire with high load and high fatigue. Carbon steel spring wire production process is usually lead -based cold drawn processing. To improve the performance of spring steel, the current foreign mechanical peeling process. In Japan, the production of piano wire adopts the wire stripper process and the Pinedon carbon spring wire used in the UK for the production of space, at the appropriate stage of wire production. This process produces surface-free spring steel wire. I plant Φ2 · 6mm turbojet engine auxiliary spring steel wire, the technical requirements of the wire through the uniform performance, good toughness, the surface without decarburization and any defects. Application of conventional lead-bath cold drawing process to produce three batches of spring steel wire, the performance is not satisfactory. For this reason, we have analyzed and studied the technological characteristics of the spring steel wire produced by the foreign technology: mainly eliminating defects such as decarburization layer, crack, folding and pitting on the wire rod or wire surface, improving the surface quality of the steel wire and inducing We study the production of polished spring wire new technology. In the production of turbojet engine auxiliary carbon spring steel wire, this process has received significant technical results.