共查询到18条相似文献,搜索用时 93 毫秒
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对美标ASTM A572等相关技术标准的解读,分析美标与国标同级别钢种技术要求的异同。根据用户需求,结合现场生产装备情况,成功研制开发出GR65美标高强度铌-钒结构钢热轧槽钢,其外形、化学成分及力学性能完全符合美国标准的技术要求。产品质量稳定,得到用户好评。 相似文献
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The influence of deformation and heat treatment on the mechanical properties of rebar steel is investigated on a pilot system. Specifically, with intermittent quenching and subsequent self-tempering, the intense-cooling time determines the tempering temperature of the quenched steel and hence the final mechanical properties of the rebar. The influence of the water pressure in the intense-cooling chamber on the uniformity of the mechanical properties is studied for steel with 0.31, 0.32, and 0.35% C; the water pressure is varied from 0.2 to 0.6 MPa. On that basis, it is established that the water pressure in the cooling chamber must be no less than 0.3 MPa, and the carbon content in the steel must be more than 0.32% in order to ensure that the mechanical properties of the rebar steel conform to the AT500 strength class according to State Standard GOST 10884–2004. 相似文献
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A. S. Viventsov B. K. Kaskin S. V. Vdovin O. V. Serdyukov V. V. Kutuzov 《Steel in Translation》2010,40(6):574-576
An up-to-date bar-rolling shop has gone into operation at AO ArcelorMittal Temirtau. The production of rolled bar and complex profiles, including the rolling and splitting of rebar profiles 8, 10, 12, and 14, has been successfully introduced. The rolling mill is equipped with a Thermex system for heat treatment of the profiles (thermomechanical strengthening). Optimal rolling and heat-treatment conditions are established for rebar produced from imported Стзсп and Стзпс steel billet. The products fully comply with strength class At400 according to State Standard GOST 10884-94. 相似文献
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通过对转炉钢成分设计、炼钢工艺控制、轧钢工艺控制等方面进行研究,在广钢转炉成功开发了HRB500、HRB500E钢筋,为降低生产成本、普及HRB500钢筋的生产应用打下良好的基础。 相似文献
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介绍了天铁集团研发小规格HRB500E抗震钢筋的过程。通过采用V、N微合金化,按照窄成分控制原则设计化学成分,严格控制铸坯内部质量,制定合理的轧钢工艺,强化炼钢、连铸及轧钢工序的过程控制,解决了风冷线上搭接点对小规格盘条造成的性能波动,开发出符合国标要求的HRB500E抗震钢筋,取得了国家质检总局签发的钢筋混凝土用热轧钢筋生产许可证。 相似文献
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通过对ASTMA615/A615M-96a钢筋混凝土用变形钢筋标准的研究,合理配比炼钢成分,精心设计轧钢工艺,巧妙控制加热温度,最终取得符合标准的低成本高级混凝土用钢筋,收到良好的经济和社会效益。 相似文献
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600MPa级钒氮微合金化热轧高性能钢筋的研制 总被引:1,自引:0,他引:1
介绍了济钢钒氮微合金化HRB600钢筋的生产实践.通过转炉冶炼、炉外精炼和全连续轧机进行了工业试制,应用光谱分析仪、显微镜、拉伸试验机、多功能焊机等设备对试制钢筋的成分、组织、性能,特别是钢筋的时效性、焊接工艺性能、疲劳性能进行了分析.结果证明,采用钒氮微合金化工艺试制的产品的屈服强度达到670 MPa、抗拉强度达到800 MPa,断后伸长率达到19%以上,钢筋具有在500万次高周疲劳应力下未发生断裂的疲劳性能,时效试验表明产品性能稳定,并且适用于多种焊接和机械连接方式,满足行业标准的要求,其生产工艺具有一定的经济优势. 相似文献
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V. A. Sheremet A. V. Kekukh Yu. V. Dudnik A. A. Levchik R. P. Vinichenko 《Steel in Translation》2011,41(1):58-60
Laboratory and full-scale testing of rebar samples with different types of corrosion prevention are conducted in conditions
corresponding to storage and transportation. The Metalantikor composition proves most effective. Optimal operating conditions
in the rolling mill line are selected, so as to minimize coating consumption. The concentration of toxics in the workplace
does not exceed the mean limiting permissible values. Outdoor tests and inspection of rebar batches at the customers’ premises
confirm that the selected approach is correct. 相似文献