상식 및 표준 소개 의 전기 납땜 철
One: Understand the electric soldering iron, the electric soldering iron is the most commonly used tool in welding.
1. Function: It converts electrical energy into heat energy to heat and weld the welding point. A large part of whether welding is successful or not depends on how well it is manipulated. general speaking, the greater the power of the electric soldering iron, the greater the heat, and the higher the temperature of the soldering iron tip.
2. The common power of electric soldering iron is: 20W; 25W; 30W; 40W; 60W; 100W.
3. The heating form of the electric soldering iron: internal heating type; external heating type.
4. Commonly used soldering iron auxiliary supplies: soldering iron stand, tin suction device, tweezers, electrostatic bracelet, diagonal pliers, absorbent sponge.
Two: 주의 사항 사용 전기 납땜 철
1. 준비 이전 사용 납땜 다리미.
The electric soldering iron needs to be tinned before use. The specific method is: heat the electric soldering iron, and when the soldering tin is just melted, apply a tin wire evenly on the soldering iron tip, so that the soldering iron tip is evenly coated with a layer of tin. (Note: It is a normal reaction for a newly purchased soldering iron to smoke during the heating process)
2. 마스터 그의 올바름 작동 자세.
It can ensure the physical and mental health of the operator and reduce labor injury. In order to reduce the harm of the chemical substances volatilized when the flux is heated and reduce the inhalation of harmful gases, in general, the distance from the soldering iron to the nose should not be less than 20cm, usually 30cm is appropriate.
3. Before using the soldering iron, check 여부 the voltage used matches the nominal voltage of the soldering iron.
4. The electric soldering iron should be grounded and well grounded.
5. 언제 사용 a 납땜 철, 마모 an 정전기 팔찌, and the 정전기 팔찌 필수 be well grounded. (참고: The static grounding wire and the soldering iron grounding wire must be separated)
6. After the electric soldering iron is energized, it is not allowed to knock, disassemble and install its electric heating parts arbitrarily.
7. 그만큼 전기 납땜 철 해야 함 유지 건조 및 해야 함 아님 사용 안에 과도하게 습한 또는 비오기 환경.
8. 언제 제거 그의 납땜 철 팁, 턴 오프 그의 전원.
9. After turning off the power, use the residual heat to put a layer of tin on the tip of the soldering iron to protect the tip of the soldering iron.
10. 언제 거기 is a black oxide layer on the tip of the soldering iron, wipe off the oxide on an absorbent sponge and tin it immediately. (Do not scrape with a knife)
11. The sponge is used to collect tin slag, tin beads and oxides. It is advisable to pinch it with your hands just to get out of water.
12. The electric soldering iron should not be energized for a long time without using it. This will easily cause the soldering iron core to burn out due to accelerated oxidation and shorten its life. At the same time, the soldering iron tip will be oxidized due to long-term heating, and even be "burned" and no longer "eat". tin"
Solder is a fusible metal that enables component leads to be joined to the connection points on a printed circuit board. Tin (Sn) is a soft, malleable silver-white metal with a melting point of 232 degree . It has stable chemical properties at room temperature, is not easy to oxidize, does not lose its metallic luster, and has strong atmospheric corrosion resistance. Lead (Pb) is a soft light blue-white metal with a melting point of 327 degree . High-purity lead has strong atmospheric corrosion resistance and good chemical stability, but it is harmful to the human body. Adding a certain proportion of lead and a small amount of other metals to tin can make it low melting point, good fluidity, strong adhesion to components and wires, high mechanical strength, good conductivity, not easy to oxidize, good corrosion resistance, bright solder joints Beautiful solder, generally called solder. Solder can be divided into 15 types according to the tin content, according to the tin content and impurities
The chemical composition is divided into S, A, B three grades. Filiform solder is commonly used in manual soldering. (There are also environmentally friendly lead-free solders that are commonly used now)
Four: 플럭스
플럭스 캔 일반적으로 be 분할 안으로 무기물 플럭스, 유기적 플럭스 및 수지 플럭스, which can dissolve and remove oxides on the metal surface and wrap
서라운드 the surface of the metal to isolate it from the air and prevent the metal from oxidizing when heated; it can reduce the surface tension of the solder after melting, which is conducive to the wetting of the solder. (로진 a 천연 수지 플럭스)
