海洋平台用改进型A517Gr.Q钢的研制
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摘要
针对厚度210 mm的海洋平台齿条板用钢开展研究分析,在ASTM A517 Gr.Q钢基础上,设计出3支成分经过优化的小钢锭,通过测定相变点和连续冷却转变曲线,模拟210 mm厚齿条板T/2和T/4处的冷速,制定不同的模拟热处理制度。试验结果表明,№2钢锭在890℃淬火和600℃回火后,综合性能最优。按改进后的成分试制的9 000 mm×2 000 mm×220 mm厚试板,T/2和T/4的性能也都满足设计要求。
Three test steel ingots were made basically with material A517 Gr.Q specified in ASME code and different in certain chemical elements in order to develop the most suitable 200 thick steel plates to make the rack plate of offshore platforms. Their phase transformation point and continuous cooling transformation( CCT) curve were measured and the cooling rate of 210 mm thick rack plates at T/2 and T/4 points was simulated to set up different simulated heat treatment processes. The test result reveals the steel ingot №2 has the best overall mechanical property when it was subject to quenching treatment at 890 ℃and tempering treatment at 600 ℃. Based on this result, the chemical composition and heat treatment were further optimized to trial-make a rack plate 9 000 mm ×2000 mm ×220 mm and it is found out the property at T/2 and T/4 satisfies the design requirement too.
Three test steel ingots were made basically with material A517 Gr.Q specified in ASME code and different in certain chemical elements in order to develop the most suitable 200 thick steel plates to make the rack plate of offshore platforms. Their phase transformation point and continuous cooling transformation( CCT) curve were measured and the cooling rate of 210 mm thick rack plates at T/2 and T/4 points was simulated to set up different simulated heat treatment processes. The test result reveals the steel ingot №2 has the best overall mechanical property when it was subject to quenching treatment at 890 ℃and tempering treatment at 600 ℃. Based on this result, the chemical composition and heat treatment were further optimized to trial-make a rack plate 9 000 mm ×2000 mm ×220 mm and it is found out the property at T/2 and T/4 satisfies the design requirement too.
引文
[1]吴涛,吴东召,等.自升式海洋平台齿条用177.8 mm厚度钢板的研制开发[J].宽厚板,2015,3(21):1-5.
[2]高珊,李冰,等.海洋平台用高强度齿条钢的研制[J].宝钢技术,2012,5:1-18.
[3]王洪涛,陆兴,等.一种海洋平台用钢的组织与力学性能[J].金属热处理,2011,11(36):24-29.
[4]康大韬,叶国斌.大型锻件材料及热处理[M].北京,1998.
[5]韩小勇.船用轴系碳锰钢的成分优化及热处理工艺改进[J].金属热处理,2015,8(35):72-75.
[6]方才顺,王小彬,等.淬火冷却速度和回火参数对核压力容器SA508-3钢强韧性的影响[J].金属热处理,2015,12(40):117-123.
[7]杨兴博,孙永立,等.国产SA508-3锻件厚度-平均冷却速度-显微组织-力学性能关系的研究[J].锅炉制造,1995,5(158):29-37.
[8]吴景之.筒体淬火冷却过程研究[J].大型铸锻件,1991,4(54):17-23.
[9]曹志强,张杰,等.E690海洋平台钢在两相区温度加热过程中的组织演变[J].热加工工艺,2012,24(41):113-118.
[10]冯小明,罗迪强,等.冷却速度对E690海洋平台用钢组织与性能的影响[J].金属热处理,2016,9(41):131-135.
[11]冯小明,罗迪强,等.冷却速度对E690海洋平台用钢组织与性能的影响[J].金属热处理,2016,9(41):131-135.
[12]束德林.金属力学性能[M].北京:机械工业出版社,1999.
[2]高珊,李冰,等.海洋平台用高强度齿条钢的研制[J].宝钢技术,2012,5:1-18.
[3]王洪涛,陆兴,等.一种海洋平台用钢的组织与力学性能[J].金属热处理,2011,11(36):24-29.
[4]康大韬,叶国斌.大型锻件材料及热处理[M].北京,1998.
[5]韩小勇.船用轴系碳锰钢的成分优化及热处理工艺改进[J].金属热处理,2015,8(35):72-75.
[6]方才顺,王小彬,等.淬火冷却速度和回火参数对核压力容器SA508-3钢强韧性的影响[J].金属热处理,2015,12(40):117-123.
[7]杨兴博,孙永立,等.国产SA508-3锻件厚度-平均冷却速度-显微组织-力学性能关系的研究[J].锅炉制造,1995,5(158):29-37.
[8]吴景之.筒体淬火冷却过程研究[J].大型铸锻件,1991,4(54):17-23.
[9]曹志强,张杰,等.E690海洋平台钢在两相区温度加热过程中的组织演变[J].热加工工艺,2012,24(41):113-118.
[10]冯小明,罗迪强,等.冷却速度对E690海洋平台用钢组织与性能的影响[J].金属热处理,2016,9(41):131-135.
[11]冯小明,罗迪强,等.冷却速度对E690海洋平台用钢组织与性能的影响[J].金属热处理,2016,9(41):131-135.
[12]束德林.金属力学性能[M].北京:机械工业出版社,1999.