随着世界性的能源紧张,各国对强化传热的理论和应用技术非常重视。工业锅炉应用螺纹管进行强化传热以提高锅炉的热效率是一种很好的方法。为了对单头螺纹管及往复螺纹管(见图1)的传热机理及其最佳结构尺寸进行探讨,我们做了大量工艺试验并进行了生产实践。现将采用模环旋压加工φ51×3螺纹管(图2)的工艺方法及工艺参数介绍如下。 With the worldwide energy shortage, various countries attach great importance to the theory and application of heat transfer enhancement. It is a good idea to use industrial heat transfer tubes to enhance heat transfer to improve the thermal efficiency of the boiler. In order to discuss the heat transfer mechanism of the single-headed and reciprocating threaded tubes (see Figure 1) and their optimum structural dimensions, a large number of process trials and production practices were conducted. Now the use of mold ring spinning φ51 × 3 thread (Figure 2) process and process parameters are described below.