CN103495794A - T23钢管和t91钢管的对焊方法 - Google Patents
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- 238000003466 welding Methods 0.000 title claims abstract description 106
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 46
- 239000010959 steel Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 19
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052786 argon Inorganic materials 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims abstract description 4
- 238000003032 molecular docking Methods 0.000 claims description 6
- NGONBPOYDYSZDR-UHFFFAOYSA-N [Ar].[W] Chemical compound [Ar].[W] NGONBPOYDYSZDR-UHFFFAOYSA-N 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 abstract 2
- 238000012856 packing Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000035900 sweating Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Abstract
本发明公开了T23钢管和T91钢管的对焊方法,其特征在于:所述T23钢管和T91钢管的壁厚范围在4mm-8mm之间;焊接方法:1)焊缝对接后的坡口角度在58°-60°之间;2)将管子内腔充氩气保护;3)将管子焊口两侧预热到100℃-200℃;4)将管子坡口对接定位点焊;5)进行焊缝根部底层焊接,再进行焊缝填充层焊接,最后进行焊缝盖面层焊接。本发明可以减小焊接热输入,优化焊接接头韧性、提高焊接速度、保证焊接质量、延长焊接件的使用寿命。
Description
技术领域
本发明涉及T23钢管和T91钢管的对焊方法。
背景技术
T23钢是在T22钢的基础上,降低碳含量和杂质含量,添加微合金化元素,添加固溶强化元素钨或钼,通过强韧化的成材加工,得到优良的常温性能、焊接性能和加工性能的强韧型铁素体钢,其在600℃蠕变断裂强度为T22的1.8倍。基于T23钢优越的性能,我国许多火力发电厂亚临界和超临界机组的锅炉过热器和再热器大量使用T23钢管,替代原有的20G、12Cr1MoVG等钢管,并在替代过程中出现了大量的T23钢管和T91钢管焊接接头。
T23钢属于强韧型铁素体钢,T91钢属于高合金强韧型马氏体钢,在两种钢管焊接过程中如果选用不当的焊接方法或焊接工艺参数,会使焊缝热输入加大,降低焊接接头韧性,影响焊接件的使用寿命。
发明内容
本发明所要解决的技术问题是提供T23钢管和T91钢管的对焊方法,具有减小焊接热输入,优化焊接接头韧性、提高焊接速度、保证焊接质量、延长焊接件使用寿命的特点。
为解决上述技术问题,本发明所采取的技术方案是:T23钢管和T91钢管的对焊方法,其特征在于:所述T23钢管和T91钢管的壁厚范围在4mm-8mm之间;
焊接方法:
1)焊缝对接后的坡口角度在58°-60°之间;
2)将管子内腔充氩气保护;
3)将管子焊口两侧预热到100℃-200℃;
4)将管子坡口对接定位点焊;
5)进行焊缝根部底层焊接,再进行焊缝填充层焊接,最后进行焊缝盖面层焊接;
焊接设备选择手工脉冲钨极氩弧焊机,选用ER90S-G焊丝;
焊接工艺参数:焊接电流:基值电流70A /峰值电流110A,电弧电压11V,脉冲频率1.5Hz,占空比50%,焊接速度控制在2.9-4.5厘米/分钟;利用脉冲峰值电流焊接电弧产生的冲力,推动焊接熔池的钢液向焊接方向移动,提高焊接速度。
对本发明所做的进一步改进是:所述的焊缝根部底层焊接、焊缝填充层焊接和焊缝盖面层焊接均沿管子坡口的外周面分段焊接,焊接顺序为:1)第一焊段由时钟6点位置开始焊接至时钟9点位置结束焊接;2)第二焊段由时钟6点位置开始焊接至时钟3点位置结束焊接;3)第三焊段由时钟9点位置开始焊接至时钟12点位置结束焊接;4)第四焊段由时钟3点位置开始焊接至时钟12点位置结束焊接。
采用上述技术方案所产生的有益效果在于:本发明将焊缝坡口角度由60°-70°减小为58°-60°,降低焊丝填充量,可以减小焊接热输入;利用手工脉冲钨极氩弧焊机的峰值电流焊接电弧产生的冲力,推动焊接熔池的钢液向焊接方向移动,可以提高焊接速度,保证焊接质量,优化机械性能指标,提高焊接件使用寿命。
具体实施方式
T23钢管和T91钢管的焊接试件规格分别为:Φ42×4×100mm、Φ42×6×100mm、Φ42×8×100mm。
T23钢管和T91钢管的对焊方法,其特征在于:所述T23钢管和T91钢管的壁厚范围在4mm-8mm之间;
焊接方法:
1)焊缝对接后的坡口角度在58°-60°之间;
2)将管子内腔充氩气保护;
3)将管子焊口两侧预热到100℃-200℃;
4)将管子坡口对接定位点焊;
5)进行焊缝根部底层焊接,再进行焊缝填充层焊接,最后进行焊缝盖面层焊接;
焊接设备选择手工脉冲钨极氩弧焊机,选用ER90S-G焊丝;
焊接工艺参数:焊接电流:基值电流70A /峰值电流110A,电弧电压11V,脉冲频率1.5Hz,占空比50%,焊接速度控制在2.9-4.5厘米/分钟;利用脉冲峰值电流焊接电弧产生的冲力,推动焊接熔池的钢液向焊接方向移动,提高焊接速度。所述的焊缝根部底层焊接、焊缝填充层焊接和焊缝盖面层焊接均沿管子坡口的外周面分段焊接,焊接顺序为:1)第一焊段由时钟6点位置开始焊接至时钟9点位置结束焊接;2)第二焊段由时钟6点位置开始焊接至时钟3点位置结束焊接;3)第三焊段由时钟9点位置开始焊接至时钟12点位置结束焊接;4)第四焊段由时钟3点位置开始焊接至时钟12点位置结束焊接。
T23钢管和T91钢管对焊试件力学试验性能指标见下表:
Claims (2)
1.T23钢管和T91钢管的对焊方法,其特征在于:所述T23钢管和T91钢管的壁厚范围在4mm-8mm之间;
焊接方法:
1)焊缝对接后的坡口角度在58°-60°之间;
2)将管子内腔充氩气保护;
3)将管子焊口两侧预热到100℃-200℃;
4)将管子坡口对接定位点焊;
5)进行焊缝根部底层焊接,再进行焊缝填充层焊接,最后进行焊缝盖面层焊接;
焊接设备选择手工脉冲钨极氩弧焊机,选用ER90S-G焊丝;
焊接工艺参数:焊接电流:基值电流70A /峰值电流110A,电弧电压11V,脉冲频率1.5Hz,占空比50%,焊接速度控制在2.9-4.5厘米/分钟;利用脉冲峰值电流焊接电弧产生的冲力,推动焊接熔池的钢液向焊接方向移动,提高焊接速度。
2.根据权利要求1所述的T23钢管和T91钢管的对焊方法,其特征在于:所述的焊缝根部底层焊接、焊缝填充层焊接和焊缝盖面层焊接均沿管子坡口的外周面分段焊接,焊接顺序为:1)第一焊段由时钟6点位置开始焊接至时钟9点位置结束焊接;2)第二焊段由时钟6点位置开始焊接至时钟3点位置结束焊接;3)第三焊段由时钟9点位置开始焊接至时钟12点位置结束焊接;4)第四焊段由时钟3点位置开始焊接至时钟12点位置结束焊接。
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Cited By (6)
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CN105149742A (zh) * | 2015-07-09 | 2015-12-16 | 安徽金阳金属结构工程有限公司 | 一种t23钢管焊接工艺 |
CN105290577A (zh) * | 2015-11-13 | 2016-02-03 | 江苏绿叶锅炉有限公司 | 基于超超临界锅炉高温屏式过热器管排焊接工艺 |
CN105290579A (zh) * | 2015-11-13 | 2016-02-03 | 江苏绿叶锅炉有限公司 | 超超临界锅炉高温屏式过热器管排单层单道焊接工艺 |
CN108340052A (zh) * | 2017-01-22 | 2018-07-31 | 江苏大秦电气有限公司 | P91耐热钢的组合焊接工艺 |
CN108994476A (zh) * | 2018-09-12 | 2018-12-14 | 上海电气核电设备有限公司 | 提高管子与封头相连接的j型坡口焊缝质量的焊接工艺 |
CN115041788A (zh) * | 2022-06-20 | 2022-09-13 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | 一种用于底座与支管自动焊接的钨极氩弧焊工艺 |
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EP0193812A3 (en) * | 1985-03-04 | 1987-04-29 | CRC Pipeline International, Inc. | Internal pipe clamp for inert gas welding |
US6781083B1 (en) * | 2001-08-08 | 2004-08-24 | Howard Derrick Keller | Weld overlay system |
CN100525980C (zh) * | 2007-04-17 | 2009-08-12 | 中国石油天然气集团公司管材研究所 | 22Cr双相不锈钢管道焊接方法 |
CN102489842B (zh) * | 2011-12-07 | 2013-05-22 | 鞍山锅炉厂有限公司 | 珠光体耐热钢与奥氏体耐热钢钢管的钨极氩弧焊焊接工艺 |
CN102601490A (zh) * | 2011-12-20 | 2012-07-25 | 宁夏电力公司电力科学研究院 | P92/t92钢管的焊接工艺及加热装置 |
CN102528237B (zh) * | 2012-01-18 | 2013-09-04 | 江苏中核利柏特股份有限公司 | 碳钢工艺管道焊接工艺 |
CN102935544B (zh) * | 2012-10-31 | 2015-06-17 | 国家电网公司 | T23钢管和g102钢管对焊方法 |
CN103273176A (zh) * | 2013-04-25 | 2013-09-04 | 大唐山东电力检修运营有限公司 | T91钢及1Crl8Ni9Ti异种钢的焊接方法 |
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CN105149742A (zh) * | 2015-07-09 | 2015-12-16 | 安徽金阳金属结构工程有限公司 | 一种t23钢管焊接工艺 |
CN105290577A (zh) * | 2015-11-13 | 2016-02-03 | 江苏绿叶锅炉有限公司 | 基于超超临界锅炉高温屏式过热器管排焊接工艺 |
CN105290579A (zh) * | 2015-11-13 | 2016-02-03 | 江苏绿叶锅炉有限公司 | 超超临界锅炉高温屏式过热器管排单层单道焊接工艺 |
CN108340052A (zh) * | 2017-01-22 | 2018-07-31 | 江苏大秦电气有限公司 | P91耐热钢的组合焊接工艺 |
CN108994476A (zh) * | 2018-09-12 | 2018-12-14 | 上海电气核电设备有限公司 | 提高管子与封头相连接的j型坡口焊缝质量的焊接工艺 |
CN115041788A (zh) * | 2022-06-20 | 2022-09-13 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | 一种用于底座与支管自动焊接的钨极氩弧焊工艺 |
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