• Categories:Industry News
• Author:Becky Su
• Origin:
• Time of issue:2022-12-16 17:55
• Views:

(Summary description)Instructions for buying reflow soldering At present, electronic product PCB boards continue to miniaturize, chip components appear, the traditional welding method can not adapt to industry requirements. With SMT the whole technical development is becoming more and more perfect, a variety of chip components (SMC) and mount devices (SMD) appear, as part of the placement technology reflow soldering process technology and equipment has also been developed accordingly Then buy reflow soldering to understand which parameters? Affect the quality of reflow soldering have the following main parameters. 1. temperature control accuracy should be in the soil 0.1 ~ 0.2 ℃; (temperature sensor sensitivity to meet the requirements). 2. The width of the conveyor belt to meet the * large PCB size requirements. 3. The lateral temperature difference of the conveyor belt should be less than 5℃, otherwise it is difficult to ensure the quality of welding. 4. should have a temperature curve test function, if the equipment does not have this configuration, should be purchased outside the temperature curve collector. 5. The longer the length of the heating zone, the more the number of heating zones, the easier it is to adjust and control the temperature curve. General small and medium-sized production selection of 4-5 temperature zones, heating zone length of about 1.8m reflow furnace that can meet the requirements. In addition, the upper and lower heaters should be independent temperature control, in order to adjust and control the temperature curve. 6. Conveyor operation should be smooth, conveyor vibration will cause displacement, suspension bridge, cold welding and other welding defects. 7.* The high heating temperature is generally 300~350℃, if lead-free solder or metal substrate is considered, more than 350℃ should be selected.