_ Reflow wholesale import of used electronic devices in Xintai (certified) _ Used reflow provided by Shenzhen Electronic Equipment Co., Ltd. Xintai. Shenzhen Xintai Electronic Equipment Co., Ltd. (www.szzxtsmt.com) is specialized in the "medium and small reflow SMT production equipment research and development, production, sales and service" of the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Chen Qicong. Xintai ZT-8030 medium in the basic principles of sixteen temperature hot air reflow Reflow is relatively simple, it is first of all to the PCB surface mount components (SMD) pad printing paste, and then put through automatic SMD placement machine stickers placed on pre-printed solder paste pads. Finally, by reflow soldering reflow oven used, gradually heated in a hot air reflow oven, the solder paste melts, called reflux (Reflow), then cooling the board PCB, solder solidification, the element and the pad firmly welded to together. In the hot air reflow, pin pads and components do not melt. This is a hot air reflow (Reflow Soldering) Unlike metal fusion welding (Welding) of. Depth understanding of physical and chemical changes must occur Reflow from the action principle and paste the welding process to start. Powder and flux paste composed mainly of tin-lead alloy mixture. Under the conditions of heat, melt the solder material tin atoms and pads or welded components (main ingredient is copper atoms) contact interface atomic interdiffusion form intermetallic compounds (IMC), Cu6Sn5 first formed, said n- imported second-hand key phase reflow process, which is the formation of a connection layer welding force reflow wholesale import of used, only the formation of the n-phase, it represents a genuine and reliable welding. Over time, between the n-phase and the copper layer will continue to generate supply Heller Reflow lead-free process capability enhanced heating module intuitive control system cooling capability Cpk software adjustable standard solder new aid collection systems - maintenance Heller reflow oven heating and cooling aspects of development, you can save up to 40% of the nitrogen consumption and power consumption. Mark III series is not only the best reflow system, more has the best overall value in the industry.