焊管
銲管
한관
WELDED PIPE AND TUBE
2015年
4期
26-32
,共7页
焊管%环焊缝%冷裂纹%有限元
銲管%環銲縫%冷裂紋%有限元
한관%배한봉%랭렬문%유한원
welded pipe%circumferential weld%cold crack%finite element
国内外常用评定冷裂纹敏感性的试验方法有20多种，选择其中的斜Y形坡口试验、刚性拘束裂纹试验（RRC试验）和里海试验进行分析对比。通过对这3种冷裂试验方法拘束度的有限元计算以及管道对接环焊缝拘束度的模拟计算，得出以下结论：①同种材料、同样焊接工艺条件下，斜Y形坡口试验和平板对接试验焊缝拘束度远大于管道对接环焊缝的拘束度；②里海试验拘束度的大小与开槽的长度有关，槽越深，拘束度越小；同种材料、同样焊接工艺条件下，通过改变里海试样开槽长度可以模拟实际管道的拘束情况。
國內外常用評定冷裂紋敏感性的試驗方法有20多種，選擇其中的斜Y形坡口試驗、剛性拘束裂紋試驗（RRC試驗）和裏海試驗進行分析對比。通過對這3種冷裂試驗方法拘束度的有限元計算以及管道對接環銲縫拘束度的模擬計算，得齣以下結論：①同種材料、同樣銲接工藝條件下，斜Y形坡口試驗和平闆對接試驗銲縫拘束度遠大于管道對接環銲縫的拘束度；②裏海試驗拘束度的大小與開槽的長度有關，槽越深，拘束度越小；同種材料、同樣銲接工藝條件下，通過改變裏海試樣開槽長度可以模擬實際管道的拘束情況。
국내외상용평정랭렬문민감성적시험방법유20다충，선택기중적사Y형파구시험、강성구속렬문시험（RRC시험）화리해시험진행분석대비。통과대저3충랭렬시험방법구속도적유한원계산이급관도대접배한봉구속도적모의계산，득출이하결론：①동충재료、동양한접공예조건하，사Y형파구시험화평판대접시험한봉구속도원대우관도대접배한봉적구속도；②리해시험구속도적대소여개조적장도유관，조월심，구속도월소；동충재료、동양한접공예조건하，통과개변리해시양개조장도가이모의실제관도적구속정황。
The test methods of cold crack sensitivity evaluation commonly used at home and abroad are more than 20, in this article, the inclined Y type groove test, rigid restraint cracking (RRC) test and Caspian Sea test were selected to conduct analysis and contrast. Through finite element calculation for the above 3 cold crack test methods restraint intensity and simulated calculation of pipeline butt circumferential weld restraint intensity, the following conclusions were obtained: ①under the condition of same material and same welding process, the restraint intensity of inclined Y type groove test and plate butt weld is much larger than that of pipeline butt circumferential weld; ② the restraint intensity of Caspian Sea test is related to the length of groove, the deeper the groove is, the smaller the constraint intensity is. Under the condition of the same welding process and same material, by changing the groove length of the Caspian Sea sample can simulate the actual pipeline constraint intensity.
