Solder paste is a mixture of flux and powdered solder. The process of attaching electrical components to the contact pads is called reflow soldering. During this process, the controlled heat within SMT reflow soldering oven melts the solder, to connect the joints permanently. Special models are designed to meet high thermal requirements and fine mesh belts for miniature parts.
These devices are designed to provide maximum thermal performance with significantly reduced costs and less space needed. Thanks to the fact everything is computer controlled, there is no possibility for causing thermal damages to especially sensitive components, in any stage. Every device has four or more zones, individually controlled, and larger ones up to ten stages.
The preheat stage is necessary to activate the soldering paste. When it starts to evaporate, it starts to make the connections in the next heating zone. The third stage is the place when the joints are exposed to the highest temperature. This temperature has to be calculated to avoid damaging the most sensitive electrical components.
Cooling zone is important part of the process. In this stage, the board is gradually cooled, and the joints are solidified. A cooling rate depends on components sensitivity as well. Generally, the rate of four degrees of Celsius per second is the most commonly used. Cooling rates have a significant effect on solder joint grain structure.
SMT reflow ovens are mostly categorized in mid to high volume devices, bench top models and nitrogen ovens. They are all designed to provide at least the same performance level compared to standard devices used for this purpose, but they do take up less space and provide very good performance.
Mid to high volume devices have four independent reflow zones, several thermocouple inputs and LCD touchscreen controls. This type of devices is often used for testing and prototyping. Their stainless steel mesh conveyor accepts up to twenty inch wide boards, and the combination conveyor provides maximum handling flexibility.
On-board computer permits on-screen profiling, and the parameters are set automatically. Particular parameters can be saved to a memory, and reloaded when needed. When re-loaded, all parameters can be additionally adjusted, including upper and lower limits, specific zones temperature settings and conveyor speeds.
Easy adjustable thermal management and other advanced functions make these devices easy to handle and safe to use. The system includes different alarms, and can be programmed to start up and shut down automatically. The combination of high efficiency, compact size and energy savings makes these models very convenient for all types of industries and for numerous other purposes.
Of course, for more advanced manufacturing processes there are some models designed with more heating zones and even more sophisticated controls. Large, ten controlled heating zone SMT oven is designed to meet large manufacturers needs. Equipped with high precision conveyor mechanism and some other innovative solutions, these devices take up small space, but provide excellent results with low energy consumption.
Different types of SMT reflow soldering oven with pin over mesh conveyor system meet any production requirement. Pin conveyors permit inline and double-sided processing. All components are built of high quality stainless steel, to maintain dimensional tolerances at the high temperature lead-free processing. All systems are equipped with special battery backup.
These devices are designed to provide maximum thermal performance with significantly reduced costs and less space needed. Thanks to the fact everything is computer controlled, there is no possibility for causing thermal damages to especially sensitive components, in any stage. Every device has four or more zones, individually controlled, and larger ones up to ten stages.
The preheat stage is necessary to activate the soldering paste. When it starts to evaporate, it starts to make the connections in the next heating zone. The third stage is the place when the joints are exposed to the highest temperature. This temperature has to be calculated to avoid damaging the most sensitive electrical components.
Cooling zone is important part of the process. In this stage, the board is gradually cooled, and the joints are solidified. A cooling rate depends on components sensitivity as well. Generally, the rate of four degrees of Celsius per second is the most commonly used. Cooling rates have a significant effect on solder joint grain structure.
SMT reflow ovens are mostly categorized in mid to high volume devices, bench top models and nitrogen ovens. They are all designed to provide at least the same performance level compared to standard devices used for this purpose, but they do take up less space and provide very good performance.
Mid to high volume devices have four independent reflow zones, several thermocouple inputs and LCD touchscreen controls. This type of devices is often used for testing and prototyping. Their stainless steel mesh conveyor accepts up to twenty inch wide boards, and the combination conveyor provides maximum handling flexibility.
On-board computer permits on-screen profiling, and the parameters are set automatically. Particular parameters can be saved to a memory, and reloaded when needed. When re-loaded, all parameters can be additionally adjusted, including upper and lower limits, specific zones temperature settings and conveyor speeds.
Easy adjustable thermal management and other advanced functions make these devices easy to handle and safe to use. The system includes different alarms, and can be programmed to start up and shut down automatically. The combination of high efficiency, compact size and energy savings makes these models very convenient for all types of industries and for numerous other purposes.
Of course, for more advanced manufacturing processes there are some models designed with more heating zones and even more sophisticated controls. Large, ten controlled heating zone SMT oven is designed to meet large manufacturers needs. Equipped with high precision conveyor mechanism and some other innovative solutions, these devices take up small space, but provide excellent results with low energy consumption.
Different types of SMT reflow soldering oven with pin over mesh conveyor system meet any production requirement. Pin conveyors permit inline and double-sided processing. All components are built of high quality stainless steel, to maintain dimensional tolerances at the high temperature lead-free processing. All systems are equipped with special battery backup.
About the Author:
We can help you buy affordable smt reflow soldering oven by introducing you to this valuable site www.sikama.com. For additional information, log on to http://www.sikama.com today.
Aucun commentaire:
Enregistrer un commentaire