often infused with a core of flux, which consists of resinous松香 and a small amount of activator for efficient soldering.The temperature control during soldering is crucial, with the ideal setting being around 50 degrees Celsius above the melting point of the specific solder used. Adj...
wetting balance 沾锡天平；润湿平衡法；沾锡平衡法 例句筛选 1.solder wire , solid and flux cored - specification and test methods - wettingbalance test method for flux core solder wire efficacy.实心和管状钎料焊丝。规范和试验方法。管状钎料焊丝效能的润湿平衡法。2.Technical Report: Wetting...
2.optimize the opennings in the steel mesh mat(By increse the length of the bonding pads that have via holes correspond with the opennings of the steel mesh mat, to get the effect of making up for tin)3.train the emploees on checking rosin joint and unsysmetic on and ...
3) W/S ( wave solder,波峰焊) 这是主板生产过程中第二个有技术含量的制程,这里主要还是设备的好坏和所用的FLUX和焊锡品质决定了焊接的品质。 华硕所有的波峰焊机全部是SOLTEC的,世界一流的设备,产自荷兰,目前只有美国一家设备上可以与之媲美,ASUS曾经评估过那种,但被我的同班同学否定了(我同学负责那个评估),...
第一个解释看起来是对的，IVB的功耗密度确实提升了，但是它不足以解释整个问题所在。OverClockers认为IVB使用的导热材料改变了，这才是导致其散热出问题的根本所在。 在IHS（也就是CPU表面的金属外壳）和CPU核心之间会有一层类似黏合剂的材料辅助散热，SNB上使用的一直是fluxless solder（无钎剂焊料），而...
基材Batch：批Beveling：切斜边或斜边Blackoxide：黑化Blank panel：空板Bonding plies：黏结层Bow：板弯Bridging：搭桥或桥接Burning：烧焦Burr：毛边Calibration system requirements：校验系统之各种要求Characteristic impedance：特性阻抗Clean room：无尘室Coefficient of thermal expansion：热澎胀系数Cold solder ...
Certain manufacturing standards, such as those written by the IPC - Association Connecting Electronics Industries require cleaning regardless of the solder flux type used to ensure a thoroughly clean board. Even no-clean flux leaves a residue which, under IPC standards, must be removed.[...
light flux meter光通量计light guide光导管/光导纤维/光制导light guide cap光导罩light intensity光强度light loss factor/LLF/maintenance factor光损失系数li ght pen光笔light scantling vessel轻构船light shield遮光罩light source filter光源滤光镜light source unit for fiberoptic纤维光束光源light source/lamp...
SMT基本工艺构成要素包括:丝印（或点胶）,贴装（固化）,回流焊接,清洗,检测,返修.1、丝印：其作用是将焊膏或贴片胶漏印到PCB的焊盘上，为元器件的焊接做准备。所用设备为丝印机（丝网印刷机），位于SMT生产线的最前端。2、点胶：它是将胶水滴到PCB的的固定位置上，其主要作用是将元器件固定到PCB板...
热水和冷水管路的布置必须采取“锡熔焊”的方法穿墙与供水管连接。所谓锡熔焊就是用焊锡进行连接固定。无论墙外边是什么型号和尺寸的管子，都必须与3/4"的铜管完全适配，然后再通过锡焊方法将其连接在一起。在这种工况下不能采用管接头攻丝连接的方法。关键是要将管子部件妥善装配组合，清理干净后涂焊剂...