一、钢筋气压焊过程中温度的分布 1.1987年3月17日,北京室内(≈10℃)水平焊接及测试,测试位置见图1。图中①点中心温度用铂——铂铑热电偶,表面温度用红外高温计(1200℃以下)测试。其余各点用热电偶测试。全部温度由计算机连续显示及打印。从焊接加热开始到接头冷却至接近室温为止,每隔20s测试一次。 2.测试结果见图2～图3。其中图2为(?)32钢筋气压焊时间2′22″,压接面中心最高 First, the temperature distribution of steel bar pressure welding process 1. March 17, 1987, Beijing indoor (≈ 10 °C) horizontal welding and testing, test position shown in Figure 1. The center temperature of 1 point in the figure is platinum-platinum rhodium thermocouple, and the surface temperature is measured with an infrared pyrometer (below 1200°C). The remaining points were tested with thermocouples. All temperatures are continuously displayed and printed by the computer. The test was performed every 20 seconds from the start of welding heating until the joint cooled to near room temperature. 2. The test results are shown in Figure 2 to Figure 3. Figure 2 shows the (?)32 bar pressure welding time 2′22′′, the highest pressure contact surface center