高碳钢碳偏析会导致成材在力学检测时性能不合格现象
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比较分析了 M- EMS和 M- EMS+F- EMS电磁搅拌技术对大方坯内部质量产生的影响 ,得出两种搅拌方式下中心碳偏析指数分别为 1.19和 1.10。
短句来源
The results by multivariate regression analysis showed that the carbon content in steel was remarkable factor to influence thecenter carbon segregation, next were casting speed and water;
The production practice of spring steel 60Si2CrVAT for high speed railway vehicle by 100 t UHP EAF + LF(VD) + 300 mm×300 mm bloom concasting process showed that oxygen in steel was 10×10 - 6, S 0.005% and P 0 012%, andcenter carbon segregationindex of concasting billet was 1.08 by mould and solidification end electromagnetic stirring in casting.
用 10 0tUHPEAF +LF(VD) + 30 0mm方CC工艺生产提速铁路车辆用弹簧钢 60Si2CrVAT的工艺实践表明 ,钢的清洁度为 [O]10× 10 - 6 ,S 0 .0 0 5 % ,P 0 .0 12 % ,连铸时用结晶器 +凝固末端电磁搅拌 ,使连铸坯中心碳偏析指数达 1.0 8。
短句来源
Improvement on thecentral carbon segregationand the structure of heavy rail steel continuous casting blooms
用M-IEMS改善重轨钢大方坯中心碳偏析和组织
短句来源
更多
“中心碳偏析”译为未确定词的双语例句
结果对高碳钢和合金钢小方坯可很好地改善凝固结构和中心碳偏析。
中心碳偏析
center carbon segregation(15)
central carbon segregation(17)
center carbon segregation
Effect of Concasting Technology Parameters onCenter Carbon Segregationof High Carbon Steel Billet
通过不断优化调整轻压下工艺制度,取得了改善铸坯中心偏析、疏松和缩孔的显著效果。 结果表明,铸坯表Байду номын сангаас无清理率达到100%,中心疏松≤1.0级,中心偏析≤1.0级,中心缩孔≤0.5级,中心碳偏析指数≤1.05,无其他内部质量缺陷,为攀钢生产高速铁路用钢轨提供了合格铸坯。
短句来源
As a result, an impressive improvement on solidification structure and centerline carbon segregation of high-carbon steel and alloy steel billets may be achieved.
生产统计表明,铸坯收得率达到98.55%,铸坯合格率达到99.94%,铸坯中心疏松≤1.0级,中心偏析≤1.0级,中心缩孔≤0.5级,中心碳偏析指数≤1.05,为攀钢生产高速铁路用钢轨提供了合格铸坯。
短句来源
By using the M-EMS, the serious carbon and sulphur segregation inside the continuous casting billet is reduced effectively and the quality of casting billet is improved.
高碳钢碳偏析会导致成材在力学检测时性能不合格现象,主要是断面收缩率指标低，且出现脆断及断夹头的情况。拉力断口的大多数形态是：断面中心有一圆形黑心，然后呈放射状发散，近乎无剪切唇。金相分析得出，中心网状渗碳体约为3.5级，而黑圈应为中心高碳的宏观表现，碳偏析严重。
中心碳偏析常采用两种方法：1使用凝固末断电磁搅拌和轻压下技术。2通过技术工艺调整，如大比水量工艺。前者安装设备，后者调整工艺，对无空间安装设备的较为合适，需要找到合适的过热度、拉速匹配制度及比水量。
在铸机结构受限时,通过铸机改造和提高拉速,使F-EMS安装位置接近Ds=0．7,可使82B钢种中心碳偏析平均值限制在1．06以下。
短句来源
EXPERIMENT ON THE IMPROVEMENT INCENTRAL CARBON SEGREGATIONOF SPRING STEEL BILLET
改善弹簧钢连铸方坯中心碳偏析的试验
多元回归分析结果表明,影响中心碳偏析的显著因素是钢中碳含量,其次是连铸拉速和二冷比水量;
短句来源
更多
central carbon segregation
Effect of Mould Electromagnetic Stirring onCentral Carbon Segregationof Heavy Rail Steel Concasting Bloom
The operation shows that the yield of liquid steel for the qualified blooms is 98.55%, the bloom qualified rate achieve 99.94% of total blooms produced from CC, center looseness and central segregation are≤1.0, while, central shrinkage cavity is≤0.5, and central segregation index of carbon is≤1.05. The qualified blooms are delivered to produce rail for high-speed tracks.
连铸工艺参数对高碳钢小方坯中心碳偏析的影响
短句来源
The evolvement analysis oncenter carbon segregationof U74 heavy rail steel bloom after blooms rolling
U74重轨大方坯开坯后中心碳偏析的演变分析
短句来源
对比发现,采用M-EMS技术后,能有效减轻连铸坯内部严重的碳、硫偏析,中心碳偏析系数由1.234降为1.101,中心硫偏析系数由1.555降为1.335,提高了连铸坯内部质量。
短句来源
The operation shows that the defect-free blooms achieve 100% of total blooms produced from CC, center looseness and central segregation are ≤1.0, while, central shrinkage cavity is ≤0.5, central segregation index of carbon is ≤1.05, and the ratio of equiaxed zone is ≥38%. The qualified blooms are delivered to produce rail for high-speed tracks.
1过热度。30℃过热度铸坯过热度的情况，其低倍组织及碳偏析要远远优于40℃和50℃。过热度的降低可以得到良好的铸态组织并减轻碳元素偏析，考虑到钢水的可浇性，应控制在30℃内。
2比水量。大比水量会人为造成柱状晶搭桥，但不会出现疏松，这样碳元素在来不及偏析的情况下就已经凝固。难点在柱状晶的发展要介于搭桥与未搭桥之间，且保持一定的等轴晶带。发现在大比水量加在足辊段，而其他段让采用元来的弱冷方式，较为可行。
短句来源
Comparing M-EMS and M-EMS+F-EMS, the effect of electromagnet stirring on interior quality of bloom isanalyzed,theircenter carbon segregationindex is 1.19 and 1.10 respectively.
结晶器电磁搅拌对重轨钢大方坯中心碳偏析的影响
短句来源
Hydrogen Content Control and Improvement ofCentral Carbon Segregationof Slab
板坯氢含量控制和中心碳偏析改善研究
短句来源
In the codition of the limited caster structure, thecentral carbon segregationof 82B steel can be controlled within the average of 1.06 through modifying caster and increasing casting speed and then making F - EMS location close to Ds = 0.7.
生产统计表明,铸坯表面无清理率达到100%,中心疏松≤1.0级,中心偏析≤1.0级,中心缩孔≤0.5级,中心碳偏析指数≤1.05,等轴晶率≥38%,为攀钢生产高速铁路用钢轨提供了合格铸坯。
短句来源
The results showed that the yield of qualified bloom can reach to 100% with central porosity and segregation of ≤1.0, central shrinkage of ≤0.5, and central segregation index of carbon of ≤1.05. The qualified blooms are delivered to produce heavy rail for high-speed tracks.
3拉速。拉速的频繁会造成卷渣，对产品的拉拔性能不利，合理的拉速对铸坯的质量影响很大，拉速与温度是匹配的，发现在1500℃时，匹配的拉速为2m/min。
此外，还应加强中间包的保温。可采用覆盖剂和碳化稻壳相结合的双覆盖渣。起到净化铁水和保温的双重作用。
以上措施在国内新余钢铁公司得到措施，效果良好，解决了高碳钢SWRCH72B的碳偏析问题，线材断丝率，断面收缩率得到了显著提高。（中国五金商城采编）
短句来源
The results by multivariate regression analysis showed that the carbon content in steel was remarkable factor to influence thecenter carbon segregation, next were casting speed and water;
The production practice of spring steel 60Si2CrVAT for high speed railway vehicle by 100 t UHP EAF + LF(VD) + 300 mm×300 mm bloom concasting process showed that oxygen in steel was 10×10 - 6, S 0.005% and P 0 012%, andcenter carbon segregationindex of concasting billet was 1.08 by mould and solidification end electromagnetic stirring in casting.
用 10 0tUHPEAF +LF(VD) + 30 0mm方CC工艺生产提速铁路车辆用弹簧钢 60Si2CrVAT的工艺实践表明 ,钢的清洁度为 [O]10× 10 - 6 ,S 0 .0 0 5 % ,P 0 .0 12 % ,连铸时用结晶器 +凝固末端电磁搅拌 ,使连铸坯中心碳偏析指数达 1.0 8。
短句来源
Improvement on thecentral carbon segregationand the structure of heavy rail steel continuous casting blooms
用M-IEMS改善重轨钢大方坯中心碳偏析和组织
短句来源
更多
“中心碳偏析”译为未确定词的双语例句
结果对高碳钢和合金钢小方坯可很好地改善凝固结构和中心碳偏析。
中心碳偏析
center carbon segregation(15)
central carbon segregation(17)
center carbon segregation
Effect of Concasting Technology Parameters onCenter Carbon Segregationof High Carbon Steel Billet
通过不断优化调整轻压下工艺制度,取得了改善铸坯中心偏析、疏松和缩孔的显著效果。 结果表明,铸坯表Байду номын сангаас无清理率达到100%,中心疏松≤1.0级,中心偏析≤1.0级,中心缩孔≤0.5级,中心碳偏析指数≤1.05,无其他内部质量缺陷,为攀钢生产高速铁路用钢轨提供了合格铸坯。
短句来源
As a result, an impressive improvement on solidification structure and centerline carbon segregation of high-carbon steel and alloy steel billets may be achieved.
生产统计表明,铸坯收得率达到98.55%,铸坯合格率达到99.94%,铸坯中心疏松≤1.0级,中心偏析≤1.0级,中心缩孔≤0.5级,中心碳偏析指数≤1.05,为攀钢生产高速铁路用钢轨提供了合格铸坯。
短句来源
By using the M-EMS, the serious carbon and sulphur segregation inside the continuous casting billet is reduced effectively and the quality of casting billet is improved.
高碳钢碳偏析会导致成材在力学检测时性能不合格现象,主要是断面收缩率指标低，且出现脆断及断夹头的情况。拉力断口的大多数形态是：断面中心有一圆形黑心，然后呈放射状发散，近乎无剪切唇。金相分析得出，中心网状渗碳体约为3.5级，而黑圈应为中心高碳的宏观表现，碳偏析严重。
中心碳偏析常采用两种方法：1使用凝固末断电磁搅拌和轻压下技术。2通过技术工艺调整，如大比水量工艺。前者安装设备，后者调整工艺，对无空间安装设备的较为合适，需要找到合适的过热度、拉速匹配制度及比水量。
在铸机结构受限时,通过铸机改造和提高拉速,使F-EMS安装位置接近Ds=0．7,可使82B钢种中心碳偏析平均值限制在1．06以下。
短句来源
EXPERIMENT ON THE IMPROVEMENT INCENTRAL CARBON SEGREGATIONOF SPRING STEEL BILLET
改善弹簧钢连铸方坯中心碳偏析的试验
多元回归分析结果表明,影响中心碳偏析的显著因素是钢中碳含量,其次是连铸拉速和二冷比水量;
短句来源
更多
central carbon segregation
Effect of Mould Electromagnetic Stirring onCentral Carbon Segregationof Heavy Rail Steel Concasting Bloom
The operation shows that the yield of liquid steel for the qualified blooms is 98.55%, the bloom qualified rate achieve 99.94% of total blooms produced from CC, center looseness and central segregation are≤1.0, while, central shrinkage cavity is≤0.5, and central segregation index of carbon is≤1.05. The qualified blooms are delivered to produce rail for high-speed tracks.
连铸工艺参数对高碳钢小方坯中心碳偏析的影响
短句来源
The evolvement analysis oncenter carbon segregationof U74 heavy rail steel bloom after blooms rolling
U74重轨大方坯开坯后中心碳偏析的演变分析
短句来源
对比发现,采用M-EMS技术后,能有效减轻连铸坯内部严重的碳、硫偏析,中心碳偏析系数由1.234降为1.101,中心硫偏析系数由1.555降为1.335,提高了连铸坯内部质量。
短句来源
The operation shows that the defect-free blooms achieve 100% of total blooms produced from CC, center looseness and central segregation are ≤1.0, while, central shrinkage cavity is ≤0.5, central segregation index of carbon is ≤1.05, and the ratio of equiaxed zone is ≥38%. The qualified blooms are delivered to produce rail for high-speed tracks.
1过热度。30℃过热度铸坯过热度的情况，其低倍组织及碳偏析要远远优于40℃和50℃。过热度的降低可以得到良好的铸态组织并减轻碳元素偏析，考虑到钢水的可浇性，应控制在30℃内。
2比水量。大比水量会人为造成柱状晶搭桥，但不会出现疏松，这样碳元素在来不及偏析的情况下就已经凝固。难点在柱状晶的发展要介于搭桥与未搭桥之间，且保持一定的等轴晶带。发现在大比水量加在足辊段，而其他段让采用元来的弱冷方式，较为可行。
短句来源
Comparing M-EMS and M-EMS+F-EMS, the effect of electromagnet stirring on interior quality of bloom isanalyzed,theircenter carbon segregationindex is 1.19 and 1.10 respectively.
结晶器电磁搅拌对重轨钢大方坯中心碳偏析的影响
短句来源
Hydrogen Content Control and Improvement ofCentral Carbon Segregationof Slab
板坯氢含量控制和中心碳偏析改善研究
短句来源
In the codition of the limited caster structure, thecentral carbon segregationof 82B steel can be controlled within the average of 1.06 through modifying caster and increasing casting speed and then making F - EMS location close to Ds = 0.7.
生产统计表明,铸坯表面无清理率达到100%,中心疏松≤1.0级,中心偏析≤1.0级,中心缩孔≤0.5级,中心碳偏析指数≤1.05,等轴晶率≥38%,为攀钢生产高速铁路用钢轨提供了合格铸坯。
短句来源
The results showed that the yield of qualified bloom can reach to 100% with central porosity and segregation of ≤1.0, central shrinkage of ≤0.5, and central segregation index of carbon of ≤1.05. The qualified blooms are delivered to produce heavy rail for high-speed tracks.
3拉速。拉速的频繁会造成卷渣，对产品的拉拔性能不利，合理的拉速对铸坯的质量影响很大，拉速与温度是匹配的，发现在1500℃时，匹配的拉速为2m/min。
此外，还应加强中间包的保温。可采用覆盖剂和碳化稻壳相结合的双覆盖渣。起到净化铁水和保温的双重作用。
以上措施在国内新余钢铁公司得到措施，效果良好，解决了高碳钢SWRCH72B的碳偏析问题，线材断丝率，断面收缩率得到了显著提高。（中国五金商城采编）