【摘要】 本文对钎焊过程进行了动态分析。首先推导了动态分析的基本理论式,然后对比研究了在恒电流和恒电压两种不同的控制制度下管坯横截面积变化和速度波动对钎焊温度的影响。结果表明,恒电压控制是一种较为有效的卷焊管钎焊温度控制方法。分析还表明,为保证钎焊温度的稳定,卷管用带钢不仅厚差要小而且厚度变化周期还要尽可能大。更多还原

【Abstract】 Dynamic analysis of the brazing process is made. First, the basic theoretical formulas for the dynamic analysis are derived, then the effects of stock cross-section fluctuation and welding velocity undulation on brazing temperature under either constant-current control or constant-voltage control are compared and studied. It shows that the constant-voltage control is an effective method of controlling brazing temperature for strip-welded pipes. It also shows that wall-thickness variations of strips should be as small as possible and the variation cycle should be as long as possible in order to ensure stable brazing temperature.更多还原