CAJ | 학술논문

通过对TRC(tensile restraint cracking)试验进行探索，对利用这种简便、实用、经济的小型试验方法研究管道环焊缝冷裂纹敏感性及指导生产中的成功应用将起到重要作用。试样采用管径325 mm的管圈进行有限元计算拘束度值，发现焊缝各点的拘束度分布较为均匀，虽然拘束的大小上下有波动，大约在3点钟方向和9点钟方向稍有偏差，与实际管道拘束度相差不多。为验证模拟计算的拘束度的可靠性，进行实际焊接试验，焊后测量值与模拟值在可控范围内，无裂纹，该试验可以应用于管道生产中。
통과대TRC(tensile restraint cracking)시험진행탐색，대이용저충간편、실용、경제적소형시험방법연구관도배한봉랭렬문민감성급지도생산중적성공응용장기도중요작용。시양채용관경325 mm적관권진행유한원계산구속도치，발현한봉각점적구속도분포교위균균，수연구속적대소상하유파동，대약재3점종방향화9점종방향초유편차，여실제관도구속도상차불다。위험증모의계산적구속도적가고성，진행실제한접시험，한후측량치여모의치재가공범위내，무렬문，해시험가이응용우관도생산중。
This paper carried out exploration on the TRC test(tensile restraint cracking test). And the exploration results will play an important role in utilizing this simple, practical, economic and small-scale test method to study the susceptibility of circumferential weld cold cracking of pipes and guiding its successful applications in production. Tube coil with a diameter of 325 mm was adopted in the calculation. Restraint intensity values of the tube were obtained using finite element calculation method. It is found that the distribution of restraint intensity values along the weld joint is even. Although calculated restraint intensity values fluctuate in amplitude and there is slight deviation at three o,clock and nine o,clock directions, they are almost the same as actual values of pipes. In order to verify the reliability of the simulated restraint intensity, actual welding actions were carried out. The measured values and simulation values after welding are in a controllable range and there is no crack. Therefore, the test can be applied in the pipeline production.