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欧光清 《金属材料与冶金工程》2010,38(5):6-11
对热轧6A盘条的成分、氧化皮形貌和组成结构,以及盘条自腐蚀电位等进行了分析,确定了盘条氧化皮厚且易剥落是造成盘条易锈蚀的主要原因。生产工艺试验发现,调整精轧后的冷却速度和吐丝温度,可以生产出氧化皮结合力好而致密、耐腐蚀性较高且力学性能合格的盘条。研究结果表明,生产过程中获得较薄且致密的氧化皮是提高热轧盘条防锈蚀性的有效途径。 相似文献
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表面铜粉剥离,导致铜杆线表面损伤,其对铜杆线拉伸过程具有较大影响。通过扫描电镜分析,剥离铜粉厚度可达25μm,经物相分析确定其主要成分为铜及铜的氧化物。通过对剥离物和杆线表面缺陷进行形貌分析,以铜杆线的生产、加工各环节作为研究对象,并确认了铜杆轧制工艺、无酸清洗工艺、线表擦伤、拉伸角度及拉丝模具等5方面影响因素,制定了相应的对策措施。研究表明,铜杆氧化物剥落和机械损伤是铜粉剥离的主要原因,在铜杆线生产、加工环节,防止氧化物带入铜基体和避免铜线表面损伤能有效减少铜杆线铜粉剥离。 相似文献
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盘条质量对焊丝产品工艺过程和性能的影响 总被引:1,自引:0,他引:1
从焊丝生产的工艺角度对焊丝原材料盘条质量提出了成分、规格、精度和内在质量方面的要求。焊丝产品的质量在很大程度上取决于盘条质量,从标准化的角度认真掌握盘条质量对生产合格的焊丝至关重要。 相似文献
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《钢铁研究学报(英文版)》2011,(Z1):437-441
Cold heading carbon steels for 8.8 grade fasteners are mostly produced by pouring reel or spooler plant.Currently,with improvement of cold heading equipment,the 10.9 grade fasteners produced by cold heading have replaced most of hot forged fasteners gradually.As well known,wire rod coil has been used to produce alloy steels.The properties and microstructures of medium carbon alloy steels,such as B7,ML40Cr and SCM435,produced by wire rod coils under hot rolled condition and after spheroidization,have been investigated.In this paper,the effect of microstructure of hot rolled steel wire rods on cold heading annealing process was studied.The results show that the hardness of wire rod coil products is generally lower than that of bar products by 5 ~ 10 HRB and the ferrite fraction in wire rod coil products is higher.After spheroidization treatment,the hardness value and spheroidization grade of wire rod coil products are relatively low.alloy steels of wire rod coils can be directly drawn slightly and the annealing time can be reduced at the same time.This practice is much helpful for energy conservation. 相似文献
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针对高碳钢盘条加工的预应力混凝土钢丝在轨枕模型中张拉断裂问题,对张拉断裂、拉拔断裂及盘条试样进行检验分析,并结合工艺参数控制情况,分析断裂产生的原因,提出改进的措施。经生产应用,后续生产盘条加工的钢丝未出现张拉断裂现象。 相似文献
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介绍了国内及宝钢目前低合金焊丝用线材的现状及存在的问题,并针对线材冷却工艺进行了重点分 析讨论,通过对比试验找出降低线材原始抗拉强度的冷却工艺。以BH08MnMoTiB为例。采用这种工艺轧制的 线材抗拉强度控制在770MPa左右。 相似文献
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郑家良 《冶金标准化与质量》2014,(5):41-43
通过对82B盘条质量的分析与讨论,弄清了钢丝及钢绞线生产企业对盘条质量的要求,知晓了国内盘条存在的主要质量问题。为了满足用户使用要求,水钢研究开发了成分合理、钢质洁净、性能稳定的82B盘条。 相似文献
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High-carbon wire rod made of steel microalloyed with vanadium 总被引:1,自引:0,他引:1
V. V. Parusov A. B. Sychkov I. V. Derevyanchenko A. V. Perchatkin É. V. Parusov M. A. Zhigarev 《Metallurgist》2004,48(11-12):618-625
The Moldavian Metallurgical Combine has mastered the production of quality vanadium-bearing high-carbon wire rod 5.5–12.0 mm in diameter. Strengthening of the grain boundaries of the steel and its dispersion-hardening significantly increase the strength properties of wire rod made of steel that has been microalloyed with vanadium, while the ductility of the product also remains high. Tests in which vanadium-bearing high-carbon wire rod 5.5–12.0 mm in diameter was drawn into 3–7-mm-diam. wire were conducted at hardware plants and showed that the wire rod is well-suited for the production of wire used in the reinforcement of prestressed concrete structures. 相似文献
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V. V. Parusov I. V. Derevyanchenko A. B. Sychkov A. M. Nesterenko É. V. Parusov M. A. Zhigarev 《Metallurgist》2005,49(11-12):439-448
Mastering the production of high-carbon wire rod — especially cord-grade wire rod — on a mini-complex originally built at the Moldavian Metallurgical Plant to make ordinary wire rod was a daunting problem that has been solved by a collaboration with the Ukrainian Academy of Science’s Institute of Metallurgy. Researchers developed an integrated technology for making the steel, continuous-cast semifinished products, and wire rod needed to make metal cord of ordinary, high, and ultrahigh strength. The wire rod is characterized by a good-quality surface (defect depth no greater than 0.15 mm, with 95% being no deeper than 0.10 mm), good deformability, and the ease with which it can be converted into wire, strands, and cord structures. 相似文献
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对我国目前线材生产的产量和装备进行了统计和研究,得出线材产量已达总钢材量的20.1%,已建成投产了一大批世界最高水平的线材轧机。根据这些现状,提出了对线材生产在今后数年内和今后长远发展两步走的意见。在第二步和长远发展的意见中,提出了一些具体开发线材车间主要设备的项目及其开发方向,可为发展线材生产技术作参考。 相似文献
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在市场需求的强力拉动、棒线材研究成果的科技引领、产能过剩导致激烈竞争的形势下,中国棒材的生产技术向着节能减排、降低成本的方向快速发展,取得了显著的进步。典型的棒线材节能减排低成本轧制技术包括低成本高性能产品开发技术、免加热直接轧制技术、多线切分轧制技术、低温轧制技术、无孔型轧制技术、无头轧制技术等。对中国棒线材节能减排轧制技术今后发展提出了建议。 相似文献