How to properly dispose of electronic products

I don't know if you know what is PCB circuit board, may be more interested in the electronics industry, all know what is PCB circuit board, although PCB circuit board looks relatively small, but, it is very significant, why so? Because a lot of its wiring is fixed by welding! Welding experts usually apply flux to the electric iron after it is heated, and evenly apply the solder to the head of the electric iron to let the iron eat tin before welding. The following patch processing manufacturers to explain how to process the PCB circuit board and how to correctly deal with the relevant knowledge of electronic products.

1. How to properly dispose of electronic products

Mobile phone, camera, tablet computer, MP3, MP4, U disk and other ancient career Fu Cheng or lack of essential items, plus chargers, batteries, headphones these accessories, all belong to the field of small electronic products. In 2011, China formally implemented the "waste electronic products recycling treatment regulation", its implementation scale is important in air conditioners, refrigerators, TV and other everyone electricity, but mobile phones, cameras and other small electronic products are not in this list.

Some consumers will sell the small electronic products engraved on them to second-hand vendors, and some consumers choose to temporarily abandon the donation processing, and the results will be put for many years. Because there is no recycling channel on the right track, coupled with the weak understanding of environmental protection, the scene of random and uncivilized abandonment is often visible. These electronic scum in the home not only occupy a place, for a long time to use will have radiation, the formation of damage to the human body, if randomly discarded, will also form a great purification of our surrounding life. Because the lithium batteries in these small electronic products contain cobalt, nickel, copper and other heavy metals, these heavy metals in the natural environment is not active differentiation, once into the human body, can not be eliminated, easy to trigger kidney failure, blood diseases and so on. Batteries also contain lithium hexafluorophosphate, a highly toxic substance that, if released into the air, could severely purify underground water sources.

Given how shockingly ineffective the disposal of small electronics can be, how can you turn waste into treasure? Experts say discarded electronics are misplaced resources, and there are at most 10 ways technology can be used to repurpose capital. For example, using chemical methods to make cobalt gives up batteries with a uniform cobalt content of 15%, much higher than the 3.7% in copper-cobalt sulfide. Although there is no technical recovery of small electronic products, but must reach a take-over amount, or can gain and loss equal.

In addition, the operation cost is absolutely higher, the current state has not a clear subsidy scale, the lack of enterprise investment benefits, so no one will do the work. The wrong place of resources is dregs, and the right place is a treasure. If we can establish a mechanism to encourage consumers to exchange old for new, through the process of the seller to grasp the department of recycling, the state to introduce relevant policies, to establish a sound recycling system, we can give these misplaced resources a good home. At the same time, the abolition of small electronic products abandoned hidden dangers, but also to enhance the awareness of environmental protection to promote, as long as the concept of green is unpopular, in order to let random abandoned uncivilized scene from now on.

2. How is the PCB board processed

The patch processing believes that the soldering iron welding time should not be too long, otherwise it is easy to burn the components. After the welding operation is completed, the residual flux on the circuit board should be cleaned with alcohol to prevent the flux after carbonization from affecting the normal operation of the circuit.

Circuit board processing welding experts believe that in order to make welding convenient and save time, circuit board processing in welding welding sequence is particularly important. Reliable PCB welding experts will choose to weld the difficult low spots first, so that the welded circuit board is more flat. From PCB circuit board processing technology to take measures to reduce or reduce the excessive vibration phenomenon of machining to reduce the effect of mechanical external force. Especially in the detin lead alloy coating, it is easy to occur between the gold-plated plug and plug, must pay attention to the choice of appropriate detin lead potion and operation process. In particular, hot air leveling, infrared hot melting and other control failures will cause the effect of thermal stress leading to defects in the substrate. During the mounting process, the components required by different types of PCB circuit boards are placed on these feeding slots, and the mounting device takes off the components from the feeding slots and mounts them to the specified position on the PCB. According to the survey data of the empirical research object, the average time of the high-speed SMT machine to attach a component is 0.06s, and the average time of switching a feeding slot is 180s.

The multifunctional SMT machine has two tables, but only one table works, the other table is only used to place large or deformed components, each table accommodates 10 feeding slots, the average mounting of a component requires 0.18s, the average switching time of a feeder is 220s. When switching between different varieties of PCB, the SMT machine needs a certain preparation switching time, usually about 6 times the time of switching a component's feed tank, namely 1200s. It can be seen that switching time plays an important role in the assembly of electronic products. The operation requirements of circuit board processing are still relatively high, because each process is more important. If you have questions about a process, you can also choose to contact us! Above, we understand that the circuit board processing in the welding of the welding sequence is particularly important, so must pay attention to the order in welding! If you are engaged in the electronics industry, must understand the circuit board processing precautions! Thank you for browsing!