共查询到17条相似文献,搜索用时 156 毫秒
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X120钢级Φ914mm×16mm直缝埋弧焊管制造技术研究 总被引:1,自引:1,他引:0
简介了巨龙钢管有限公司采用宝山钢铁股份有限公司生产的X120钢级管线钢板试制JCOE管线管的情况。研究了X120钢级钢板力学性能的变化、JCOE成型特点、焊接性、热影响区的软化、矩形和圆棒拉伸试样的对比试验以及不同焊接材料匹配、焊接热输入量对焊接接头的硬度、强度和韧性的影响;与X100钢级进行了对比分析。提出了X120钢级管线钢管的拉伸试验采用圆棒试样和制订管线钢钢板、钢管标准的建议。 相似文献
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热时效对X80钢级埋弧焊管变形能力的影响 总被引:1,自引:1,他引:0
X80钢级管线钢管的应用促进了管线运行压力的提高,因此对基于应变的管线设计(SBD)来说,有必要对X80钢级埋弧焊管的应变能力进行测定。在对应变能力的测定中,热时效对屈服现象的影响便成为其重要因素。本次研究中,进行了全尺寸钢管弯曲试验和有限元分析(FEA),用以弄清热时效对X80钢级UOE直缝焊管应变能力的影响;并采用有限元分析法对应变能力与应变要求之间的关系进行了研究。 相似文献
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日本住友金属工业公司开发出用于长距离陆地输气管线工程的X100和X120钢级超高强度大口径焊接钢管。这种新开发的焊接钢管在高压输送时具有极高的安全性,获得了埃克森美孚和英国石油公司的高度评价。 相似文献
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以某X65M钢级钢板为例,分析了直缝焊管生产工艺对该材质焊管最终屈服强度的影响。分析认为:成型工艺对X65M钢级钢板的屈服强度影响较大,成型后母材屈服强度减小30~70 MPa;扩径虽能使屈服强度增加,但增幅不大,不足以弥补成型后造成的屈服强度损失;棒状试样的屈服强度普遍比板状试样的大,但增量不大。建议钢管生产厂对原料的理化性能及金相组织进行充分评估,预测屈服强度变化趋势,避免成品钢管的屈服强度超出标准要求。 相似文献
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<正>Fives Bronx公司为北美的一家钢管生产龙头企业提供了1台6CR9型六辊矫直机和1台140MN水压机。6CR9型六辊矫直机可矫直API钢级的所有钢管及特殊合金管,包括API套管、油管、管线管和机械用管,直径为60.325~193.675mm,长度为14.63m,钢管最大屈服强度980MPa,最高温度1050℉。 相似文献
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西气东输二线管道工程用X80钢级Φ1219mm直缝埋弧焊管的研发 总被引:1,自引:0,他引:1
介绍了西气东输二线管道工程用X80钢级Φ1219mm直缝埋弧焊管的研发情况。主要分析研究了X80钢级Φ1219mm直缝埋弧焊管的JCO成型、焊接、机械扩径、超声波自动探伤等技术;X80钢的理化性能试验结果;X80钢制管前后的拉伸性能、夏比冲击韧性、DWTT性能变化;X80钢级钢板夏比冲击韧性与温度的关系、屈强比的合理确定。批量生产证明,此种钢管的各项性能指标均满足标准要求,产品实物质量达到国际先进水平,填补了国内外空白,可显著降低生产成本。 相似文献
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Seok Su Sohn Seung Youb Han Sang Yong Shin Jin-ho Bae Sunghak Lee 《Metals and Materials International》2013,19(3):377-388
In this study, the spiral piping and electric resistance welding piping was conducted on API X70 and X80 linepipe steel sheets having different microstructures, and the yield strengths of the flattened sheets were measured. A double-cycle simulation test with tension-compression-tension or compression-tension-tension for the piping and flattening processes was conducted to estimate the yield strength. The simulation test results indicated that the yield strengths of the outer or inner wall of the pipe could be estimated by combination of Swift’s equation and the Bauschinger stress parameter, and that these estimated yield strengths were well matched within a small error range with the measured yield strengths. Thus, the variations in yield strength before and after the piping could be effectively estimated using the tension/compression properties of the leveled sheets because the strength differential effect was small and the reverse flow curves were expressed by a single curve. These findings suggested that the present estimation method played an important role in controlling microstructural and manufacturing process parameters to minimize the reduction in yield strength of the linepipe steel sheets. 相似文献
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Seok Su Sohn Seung Youb Han Sang Yong Shin Jin-ho Bae Kisoo Kim Nack J. Kim Hyoung Seop Kim Sunghak Lee 《Metals and Materials International》2012,18(4):597-606
In the present study, spiral piping was conducted on API X80 linepipe steel, and the outer and inner wall pipe yield strengths were measured. A low-cycle fatigue test was conducted on a leveled X80 steel sheet to simulate piping and flattening processes, and the strain hardening and Bauschinger effects, induced from different strain histories, were evaluated and combined using Swift??s equation and the Bauschinger stress parameter, respectively. By analyzing the stress-strain curves obtained from the low-cycle fatigue test, the yield strengths of the outer and inner walls were estimated to be 592 MPa and 492 MPa, respectively, which are lower by 20?C80 MPa than that of the actual pipe used. Possible reasons for measured and estimated yield strength differences could be the simulation determining procedure of the pre-strain and Bauschinger stress parameters, preposition of same strain hardening behavior depending on strain history, and pre-strain differences depending on thickness location in the steel sheet during piping. 相似文献
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HSL450S海底管线管的开发 总被引:2,自引:1,他引:1
介绍了HSL450S海底管线管钢的成分设计要求;重点介绍了HSL450S海底管线管钢与管的试制情况,生产工艺控制措施以及性能评价试验等。检验结果表明,新开发的HSL450S钢铸坯夹杂物含量低,钢的纯净度高:所轧钢管的各项力学性能、抗腐蚀能力等完全满足相关标准要求。X65钢级HSL450S海底管线管开发成功并可投人批量生产。 相似文献