Solder wire is a filamentous solder material, and everyone knows that solder wire is widely used today. Solder wire is mainly used in dip soldering and wave soldering, and electronic solder is the most consumed product today. Solder wire can also be used for flame brazing and welding of large structural parts and long welds. In electronic and electrical products, solder wire is one of the most indispensable connection materials. The global average annual consumption is 100,000 tons. about.
We should effectively control the temperature when using solder wire for welding, so as to ensure that the solder wire has a relatively good welding effect.
1. When soldering the solder wire, keep the appropriate solder wire away from the tin pot, connect the power supply to the tin pot, turn on the power switch and adjust the temperature to about 250 degrees Celsius, and use the solder wire on the red heating tube. Carry out tin coating to ensure that the entire tin surface can completely cover the heating tube. When the solder wire is melted, the proper amount of solder wire should be added to ensure that the tin surface is at a relatively suitable temperature.
2. When the solder wire is in use, if there is solder wire left in the tin furnace, do not cut off the heating power supply of the tin furnace. At this time, the temperature of the warm solder bar should be properly controlled and the set temperature It should not be too high to avoid accelerating the oxidation reaction of the tin surface. Generally, we can control the temperature of the 63/67 solder wire at about 250 degrees Celsius, the 50/50 solder wire should be controlled at about 280 degrees Celsius, and the 30/70 solder wire should be controlled at about 300 degrees Celsius.
In the production process of electronic factories, solder wire is one of the essential materials, so when choosing solder wire, you must be careful in order to buy a veritable good product. First of all, when we are choosing solder wire, it is best to go directly to the manufacturer to purchase.
Lead-free tin wire, the second is to pay attention to its packaging when selecting solder wire, although the exquisite packaging does not explain any problems, but the solder wire produced by standard manufacturers will be marked on the product packaging, and If there are any quality problems after purchasing, you can find the manufacturer for replacement.
Then, when purchasing, you should make a reasonable selection according to your actual situation. Many brothers like to go to the electronic city or hardware tool store to purchase. The reason is that these local products are relatively cheap, but you get what you pay for, and you get what you pay for. During the process, the solder wire appears black, not plump, and other appearances. Lead-free tin bars are all formed due to the low quality of the solder wire. ○
The solder wire is mainly composed of tin alloy and auxiliary agent. The composition of the alloy is divided into tin-lead and lead-free auxiliary agent, which is evenly poured into the center of the tin alloy. It is also different. Some additives are used to improve the auxiliary heat conduction of the solder wire during the welding process, remove oxidation, reduce the surface tension of the welding raw material, and remove the oil stain on the surface of the welded material, thereby increasing the welding area. The characteristic of solder wire is a tin alloy wire with a certain length and diameter, which can be used in conjunction with an electric soldering iron in the welding of electronic components.
If the ordinary structural steel is welded, then we should require the strength of the weld metal and the base metal to be at the same height; if the lead-free tin bar is welded with alloy structural steel, the solder with a similar alloy composition and base metal should be selected. strip;
3. Consideration of construction conditions and economic benefits:
When choosing solder bars, we should choose acid solder bars with better process performance as far as possible while meeting the requirements of performance. If the weldment is used in poor ventilation conditions or in a narrow space, acid-resistant or dust-proof solder bars should be selected; if the welding work is relatively large, high efficiency can be selected within the allowable range The solder bar is used to improve the production efficiency of welding.