reflow profile management.ppt

2.热电偶制作方法 ①热电偶两条线长度要一致； 玻璃线:红:负、黄:正 ②热电偶接法要注意 尼龙线:红:正 、 白:负 ③注:接点要用高温焊锡:长度须1-2mm； 2.热电偶制作方法 ④?? Connection shown like above 接法如上图。 ⑤ the connection point should fully contact with Test Point and the Test Point should be numbered 接点要与Test Point完全接触,测试点要编号； 2.热电偶制作方法 3、 The Test Point on the test board of BGA PCB Profile should be tested by X-ray. 有BGA的PCB Profile测试板要用X-ray检查 Test Point 4、The soldering of Test Point should be cheched before and after use and the two lines in plugs should be check for intertwist 使用前后要检查 Test Point 焊接情况,以及插头上两条线有无绞合 5 、 The valid time for use: Usually the often used PCBs which are used twice or above a day should be changed about every week使用时间 一般常用PCB在一个月左右须更换(每天要用两次或以上),如发现焊点脱落,板变形严重,须重新更新。 6、 Measurement: According to MI, make sure of the temperature. After the oven’s temperature is steady, put the the test-board and test-machine into oven for testing测量：根据MI,确认温度,待炉温稳定后,将测试板与测试仪一起放入炉中测试。 The usage of the Datapag logger of the test-machine.测试仪Datapag logger 使用方法： ??1)?? Press RESET and after the red light blinks, please insert the plugs into logger in order and cover the protecting-cover。 接下reset开关,红灯的灯闪亮后,按顺序将插头插入logger内,盖紧防护盒。 2)???Put Test board and logger into oves ( if the link is necessary, the special fix should be used). When they are taken out of the oven, open the protecting-cover and pull out of the plugs. The operator should wear the gloves keeping from scalding 将Test board与logger放入炉内(如用链,则须加上专用夹具),待出炉后,打开防护盒将插头拔出，要戴手套,防止烫伤。 3)connect the logger to the computer, download the data in the software 将logger连上电脑，download数据到软件中 4)?? Choose the specific Process according to the Model and type of oven, input the Date, Data, Test point accordingly and print. 根据Model与炉号选择专用Process, 输入日期Data，测试点等对应数据,打印。 2、Way to use the test machine SMP-206 Pull Checker electrical switch and Store switch up, when the indicator light start to