Vitronics' XPM3 reflow soldering system.The XPM The file extension used by an X Pixelmap image. See X Pixelmap. (file format) xpm - X11 Pixmap. A pixmap image file format for the X Window System. 3 reflow soldering Reflow soldering is the most common means to attach a surface mounted component to a circuit board, and typically consists of applying solder paste, positioning the devices, and reflowing the solder in a conveyorized oven. system has the same footprint as its predecessor, the XPM2, but features superior heat transfer, improved cooling, increased uptime, lower cost of ownership, and a new software platform including integrated profiling setup tools. [ILLUSTRATION OMITTED] A forced convection reflow oven A reflow oven is a machine used primarily for reflow soldering of surface mount electronic components to printed circuit boards. Types of Reflow Ovens Infrared and Convection Ovens , the machine is designed for automated inline processing of SnPb and Pb-free assemblies. It can be operated in air and nitrogen atmospheres. The machine is configurable, with five to 12 heating zones and two to four cooling zones. One key improvement is the new blowbox, which permits better heat transfer. In the new design, circulation now occurs from side to side, instead of from front to back. This reduces the slots and improves heat transfer by a reported 25%. The heat exchanger heat exchanger Any of several devices that transfer heat from a hot to a cold fluid. In many engineering applications, one fluid needs to be heated and another cooled, a requirement economically accomplished by a heat exchanger. is larger. The primary cell blower speed control enables simultaneous convection level control of all heating and cooling cells, motor speed control via computer interfaced AC variable frequency drive. Individual cell sensing minimizes diagnostic time by detecting and indicating a specific cell motor under speed condition and or cell over-temperature switch activation. Redundant over temperature system provides over-temperature detection. The process tunnel is sealed. The maximum set-point temperature in air is 350[degrees]C, with control accuracy a reported +/-1[degrees]C, and cross conveyor uniformity of +/-2[degrees]C. The time to "process ready" status from cold start is less than 30 minutes. The typical nitrogen operating flow rate range is 700-2000 cfh, depending on model and conveyor type. The available heating length is 66 to 160"; the cooling length range is 26 to 48". The overall system dimensions are 139 to 247" (length) by 57" (width). Cooling is better controlled: Each zone can be set to a temperature and ramped to the user's specifications. All cooling configurations are designed with active forced convection top and bottom cooling cells with recirculating flow for improved cooling efficiency and capability. The cooling units are simple to access for cleaning, affixed af·fix tr.v. af·fixed, af·fix·ing, af·fix·es 1. To secure to something; attach: affix a label to a package. 2. by a drop-down hinged panel. Cooling options include ambient air, nitrogen, or a combination, with an optional integrated chiller chill·er n. 1. One that chills. 2. A frightening story, especially one involving violence, evil, or the supernatural; a thriller. chiller Noun 1. . The patented Flux Flow Control flux evacuation system evacuation system, n a centralized vacuum system connected to each dental operating unit, used to keep the oral cavity clear of water, saliva, blood, and debris, generally operating at a high volume, high velocity, and low pressure. comes standard. Conveyor setups include right-to-left; belt-only; edge-rail only; and combination edge-rail and belt conveyor in widths up to 22". The speed range is 10-75"/min. A dual lane edge-rail conveyor package is available that simultaneously transports products up to 8.5" maximum width per lane. The motor and hand crank are new as well. The XPM3 is compliant with SMEMA-9851, CE, EU Directive (European Union Directive) A set of privacy requirements that took effect in 1998 and ordered European member nations to enact compliant legislation. It deals with the establishment of Data Protection Authorities, people's rights to personal information and enforcement. , UL 499 and others. Heater design meets CE Compliance Hi-Pot test requirements. Separately available is the 6745 low-volume, high-mix selective soldering Selective soldering is the process of soldering only through-hole electronic components onto a printed circuit board that has surface mount components on the under-side. This is usually done because the surface mounted component is not glued into place, instead solder paste is used machine. The machine holds the Selectwave solder bath and has a two flux tank capacity. The machine feature a pin-activated release, and an adjustable gripper, which accommodates panel sizes of 4 x 6" min. to 16 x 16" max. A pallet gripper has alignment pins to facilitate use without changing the machine width or when preexisting pre·ex·ist or pre-ex·ist v. pre·ex·ist·ed, pre·ex·ist·ing, pre·ex·ists v.tr. To exist before (something); precede: Dinosaurs preexisted humans. v.intr. wave pallets are available. The EasyTeach software imports profiles and requires no data be inputted; instead, users can simply scan the board. A solder program may be copied to multiple boards via a mouse click. The tool shows flux and solder and reference lines simultaneously. The program can then be saved and the software calculates the optimum path for fluxing and soldering Available from Vitronics Soltec; vitronics-soltec.com. |
|
||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion