I. Welding operation posture and hygiene
The chemical substance volatilized by the flux heating is harmful to the human body. If the nose is too close to the tip when operating, it is easy to inhale harmful gases. Generally, the distance between the soldering iron and the nose should be at least 30cm, usually 40cm.
There are three types of soldering iron, as shown in Figure 1. The anti-grip method is stable, and it is not suitable for fatigue for a long time. It is suitable for the operation of high-power soldering iron. The positive grip method is suitable for medium power soldering iron or operation with elbow soldering iron. Generally, the pen holding method is often used when welding the welding parts such as the printed board on the operation table.
Solder wire is generally available in two ways, as shown in Figure 2. Because lead is a certain proportion of the wire composition, it is known that lead is a heavy metal harmful to the human body. Therefore, wear gloves or wash hands after operation to avoid ingestion.
Use the soldering iron to configure the soldering iron frame, generally prevent the right front of the workbench. After using the soldering iron, be sure to secure the iron frame, and pay attention to the wires and other things.
Two. Five-step training
As a training method for beginners to master the manual soldering technology, the five-step method is effective and worthy of being discussed as a separate section.
Many electronic enthusiasts re-run a welding operation method, that is, first use a soldering iron tip to apply some solder, and then place the soldering iron on the solder joint to wait for the solder to wet the soldering.
This method is not the correct method of operation. Although this can also weld the weldment, it does not guarantee the quality. It is not difficult to understand this from the soldering mechanism we know.
As shown in Figure 3, when we melt the solder on the soldering iron tip, the solder flux is on the surface of the solder. Since the temperature of the soldering iron is generally above 250 °C-350 °C, before the soldering iron is placed on the solder joint, The rosin flux will continue to volatilize, and when the soldering iron is placed on the solder joint, the soldering temperature will be low, and the heating will take some time. During this time, the flux is likely to evaporate most or even completely, so it is moist due to the lack of flux during the wetting process. Poor wet. At the same time, due to the difference in temperature between the solder and the weldment, the bonding layer is not easily formed, and it is difficult to avoid the virtual welding. Moreover, the solder is easily oxidized after the protection of the flux, and the quality is not guaranteed.
300Mbps Wireless-wifi Repeater
* [300Mbps High Speed & Stable Signal]: WIFI Extender with latest dual band technology can provide up to 300Mbps for 2.4GHz, a total rate of about 300Mbps, maximizing reduces the loss of data transmission and enjoying HD video/game and fast speeds internet mode.
* [360° Full Signal Coverage]: Our Wifi range extender equipped with 2*2dBi intelligent Omnidirectional high gain antenna, high penetration, covering up to 360 degrees, boosts internet WiFi Coverage up to 2000 square feet, eliminate dead zones in house with weak Wi-Fi coverage. Enjoy Lag-Free Connection to any type of devices.
* [2 Application Mode & High Compatibility]: This Wi-Fi Repeater supports multi connection modes for different needs. -- Repeater Mode and AP Mode. And it has been tested can connects up to 20 devices and compatible with any standard router or gateway or access point. Gigabit Ethernet port also allow this Wi-Fi booster function as a wireless adapter to connect wired devices. It`s widely used at home, working areas, and hotels.
* [Easy to set up]: Only takes 10 seconds! This WiFi signal booster can easily expand the wireless coverage by press the WPS button. Or set up via browser website(192.168.188.1) based configuration in almost any device, including IOS and Android mobile platforms. And its smart signal indicator can help you to find the best location for wifi coverage.
* [Safe Connect & Warranty]: Adopt latest wireless security encryption, effectively prevent external malicious interference and prevent unauthorized access and protect your important data, ensure the security of equipment and personal privacy.
300Mbps Wireless-Wifi Repeater,Wifi Amplifier,Wireless Extender,Wifi Booster For Home
Shenzhen Jinziming Electronic Technology Co.,LTD , https://www.powerchargerusb.com