CAJ | 학술논문

应用有限元方法建立了灰铸铁件手弧焊接温度场的数学模型，对灰铸件焊接温度场和热循环进行了分析。结果表明：焊后初期冷却速度很快(约380℃/s)，温度梯度较大，接头在焊补温度场中经历一个复杂的不均匀快速加热和冷却过程，从而产生非协调应变，易发生裂纹等缺陷。
응용유한원방법건립료회주철건수호한접온도장적수학모형，대회주건한접온도장화열순배진행료분석。결과표명：한후초기냉각속도흔쾌(약380℃/s)，온도제도교대，접두재한보온도장중경력일개복잡적불균균쾌속가열화냉각과정，종이산생비협조응변，역발생렬문등결함。
Using the finite element method. temperature field and heat cycle are analyzed. It is shown that the cooling rate is fast at the beginning of cool-down, the temperature distribution of welded joint is non-uniform.and the maximum temperature gradient occurs in the area near weld fusion line.