Tin wire is also called solder wire, solder wire, tin wire, etc. It is composed of tin alloy and flux. Tin wire is the most convenient material for hand soldering circuit boards. Using tin wire for welding operation can effectively improve the welding efficiency. Solder flux is included in the tin wire, because tin wire without flux cannot be soldered. The soldering flux of the tin wire is also related to its type. Different types of soldering flux are different. So, do you know what tin wire brands are? What is the price of tin wire? Let's take a look at the relevant knowledge of the types of tin wire brands sold in the market!
Tin wire classification
According to different situations, there are several ways to classify solder wire:
Classified by metal alloy materials: can be divided into tin-lead alloy solder wire, pure tin solder wire, tin-copper alloy solder wire, tin-silver-copper alloy solder wire, tin-bismuth alloy solder wire, tin-nickel alloy solder wire and special tin-containing alloy Material of solder wire.
According to the chemical composition of the solder wire additives: can be divided into rosin core solder wire, no-clean solder wire, solid solder wire, right fat solder wire, single core solder wire, three core solder wire, water soluble solder wire , Aluminum solder wire, stainless steel solder wire.
Classified according to melting temperature: can be divided into low temperature solder wire, normal temperature solder wire, high temperature solder wire.
Tin wire model
Shenzhen Tongfang lead-free tin bar / tin wire
Tongfang TF-601A alloy Sn-Ag3.0-Cu0.5 lead-free tin bar adopts high-quality original ecological high-purity tin material and the most advanced electronic welding material R & D and production technology in Japan and the United States. It strictly follows the ROHS directive and SS- in the selection process. The 00259 standard requires that the raw material smelting, stirring, inspection, and pouring are all produced using high-standard processes. Combined with the development direction of the green and environmental protection of the modern electronics industry and the demand for reliable products, the original ecological tin ingots are used for lead-free tin bar production.
Lead-free tin strip TF603C
Tongfang TF-603C alloy Sn99.3% / Cu0.7% lead-free tin bar uses high-quality original ecological high-purity tin material and the most advanced electronic welding material R & D and production technology in Japan and the United States. It strictly follows the ROHS directive and SS- in the selection process. The 00259 standard requires that the raw material smelting, stirring, inspection, and pouring are all produced using high-standard processes.
This is a kind of solder with good heat resistance, especially its inherent fine structure, excellent mechanical properties, good wettability and reliability of use. It has become a clear alternative to eutectic solder and accepted by the needs of the electronics industry.
Sn63Pb37 series tin wire
Tongfang Sn63 / Pb37 alloy lead and tin bars are made of pure natural high-purity high-quality tin materials up to 99.99% of environmentally-friendly pure tin ingots as raw materials, and are equipped with high-tech multi-component composite fluxes. Its unique rosin and active formula make it have Fast wetting, less residue, transparent, completely inert, and the selected production process is a low-residue cored solder bar, used in no-clean soldering process and in compliance with relevant regulations. From the selection of superior high-quality tin to strict process monitoring and final product shipment inspection, the high solderability and quality of lead-tin bars are fully guaranteed.
Tin line brand recommendation
OWON brand-lead tin wire
Leaded tin wire is a kind of tin wire, generally used for soldering circuit boards. A OWON brand has lead and tin wire, the price is not 50 yuan per roll. The diameter of this brand is about 1 mm. The products of this brand are made of electrolytic tin ore from Yunnan. Not only is the surface bright, but also the degree is sufficient. It contains few trace impurities, which is very fast during the welding process, thereby reducing In addition to the thermal shock to the components, the ion pollution after welding is low, the smoke generated is small, and there is no irritating odor; the lead-tin wire has very good insulation resistance, high electrical performance.
AIA brand-lead-free tin wire
The price of a lead-free tin wire of SNCU0.7 under the AIA brand is 78 yuan per roll. The active solder wire contains up to 55% tin. Leaded tin wire has good wettability and expandability, which can be effective To prevent bridging, sharpening and other phenomena in the welding process, as well as the ability to efficiently remove the oxide film, a layer of protective film will be formed on the surface after welding, thereby easing the oxidation reaction of the solder joints. The smoke is very low, and the smell is fresh, very environmentally friendly.
Vitus brand-low temperature tin wire
A low-temperature tin wire of the A63 model of the Weitesi brand is priced at 70 yuan per roll, and its diameter is divided into 0.5 mm and 0.8, 1.0, 1.2 mm and other thickness products. The low-temperature tin wire of this brand, The tin content is very high, the solder joints are bright, and it has a strong conductive effect. It is suitable for some high-precision welding. The super-strong welding speed is very fast, and there is less spatter, the solder joints are bright, etc. So it has a very wide range of uses, especially for the welding process requirements in the modern electronics industry.
Process flow
The first step in the production of solder wire is the detection of tin, lead, rosin, and antioxidants (refer to the specific requirements of the national standard code ratio range). Inspectors check that the material meets the standard and then transfer to production before production.
The second step is the melting of the tin material. The main and auxiliary materials are debugged according to a certain proportion and put into a melting furnace. After melting, the surface is covered with an antioxidant, (in order to prevent the oxidation of the tin material to form tin dioxide (chemical formula SnO2, formula amount 150.7, white , Shape tetragonal, hexagonal or orthorhombic crystal,) increase the temperature and agitate slightly to make it completely fused.
The third step is the casting of tin material. The heating in the fusion process is based on oil and electric heating. Some manufacturers use coal for heating. Using oil and electric heating requires a corresponding special heating furnace that can automatically stir the temperature and time. Very good automatic control to reduce the possibility of poor fusion caused by human factors. The molten tin material is poured into the mold and cast into a rod-shaped billet.
The fourth production step is wire extrusion. In the entire production process of solder wire, the extrusion of tin material is the most critical, because extrusion is a key link in the entire production process. If there are defects and hidden dangers during extrusion, it will lead to solder Wire defects, sometimes it is difficult to find problems, in order to ensure the production of high-quality products, the tight control of the extrusion is very heavy rod-shaped extrusion of solder wire in the hydraulic press and extrusion die, intermittent wire injection in the extrusion process According to the requirements of production, round wire, skein wire, thick wire and thick wire can be made with different molds.
The fifth production step is winding. During the operation, the winding is leveled and the number of turns can be counted under full automatic control. When winding, uneven winding and unevenness will occur. These problems should be paid attention to during production. The sixth step is the packaging and inspection of solder wire.
Editor's summary: Tin wire is an important material for manual electronic component welding, but tin wire is very harmful during the welding process. Solder will produce some fumes. If the fumes are sucked into the lungs, it will have a great impact on the respiratory tract and lungs. Long-term exposure may cause severe damage to the lungs. Therefore, the operator must work in a well-ventilated environment to minimize the occurrence of these phenomena.
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