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四淬火速度 (1) 薄板在铝的淬火技术方面,淬火速度在260和399℃之间一般是以板厚中心为代表的平均淬火速度。这个温度范围一般可认为是冶金上最重要的临界范围。在这里也利用惯例。做为了解淬火速度的方法,是在板的中心孔,插入由铝薄做导线穿连的热电隅,然后在将这样的试片进行了热轧。热电隅的结合点之间距离必须为板厚的1.5倍以上。为了确定热电隅的结合情况采用了X射线照片。在此试验中所利用的热电隅是B&B~#校准为30的J型热电隅。在固溶热处理温度
Quenching speed of four (1) sheet in the aluminum quenching technology, the quenching speed between 260 and 399 ℃ is generally the center of the plate thickness as the representative of the average quenching speed. This temperature range can generally be considered the most important critical area of metallurgy. Here also use the convention. In order to understand the quenching speed, the center hole of the plate is inserted with a thermocouple led by an aluminum foil, and then the test piece is hot-rolled. The distance between the junction points of the thermocline must be 1.5 times of the thickness of the board. X-ray photographs were taken to determine the combination of thermoelectric cours. The thermocouple used in this test is a Type B thermocouple calibrated to B & B # # 30. In the solution heat treatment temperature