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What are the main reasons for the drying of lead-free environmentally friendly solder paste?
Nov 17, 2022
11-17
2022
There are two main reasons why the lead-free environmentally friendly solder paste dries out:
1. For example, the formula is not good, the temperature is too high, and the solvent evaporates quickly. If the humidity is too high, the solder paste will absorb water, and it will interact with the rosin in the solder paste to make it dry. If you think about it from the perspective of formula, it is generally not because of the use of alcohol. Indeed, there are many solder pastes that use alcohol. , but it seems that ethanol has not been seen, and more ethers are used.
4 tips for identifying PCB solder paste process
Nov 16, 2022
11-16
2022
With the widespread use of lead-free solder paste in the electronics industry, many people are wondering, does it mean that all PCBA boards are lead-free and use lead-free solder paste? In fact, this is not the case. Often times, cost issues or other issues will be considered, which will cause many circuit board manufacturers to continue to use lead-based processes. So how to distinguish whether a PCB board is lead-free or leaded?
Solder balls appear in wave soldering
Nov 16, 2022
11-16
2022
What are the important ingredients in tin bars?
Tin bar is an important soldering auxiliary material in the soldering process of electronic products. Its main function is to apply to wave soldering or tin furnace circuits. plate welding. So what are the important ingredients in tin bars?
Tin bar literally means that its main component is tin, so in addition to tin, there are elements such as lead, copper, silver, etc., and even a small amount of other elements, such as nickel, antimony, bismuth, In, rare earth, etc. It is often said in the industry that leaded tin bars are mainly composed of tin-lead alloy components. According to the ratio of alloy components, they can be divided into various specifications such as common Sn63Pb37, Sn60Pb40, Sn55Pb45, Sn50Pb50, etc.
Lead-free tin bars are commonly composed of tin-copper alloys, tin-silver-copper alloys and other trace alloy elements. To improve the wettability and spreadability, but if the amount added is too large, the fatigue life and plasticity of the solder joint will be reduced. Among the systematically designed chemical components, it is obviously hoped that the properties of tin bars can achieve an optimal balance, such as welding performance, melting temperature, strength, plasticity and fatigue life. Therefore, every process detail and synthetic element in the production process of tin bars is very critical to the quality of the final tin bars.
Lead-free solder wire temperature requirements
Nov 15, 2022
11-15
2022
The temperature requirement of lead-free solder wire is higher than that of lead-free solder wire. The appearance of wire solder joints is relatively rough, there are many pores in the solder joints, and the requirements for wetting angle are relatively large. Without half-moon-shaped lead-free solder wire, the requirements for additives are relatively high. It is necessary to increase the activity of additives and increase the requirements for activation temperature. .
The use of solder wire
Nov 15, 2022
11-15
2022
1. Rosin solder wire
It is suitable for electronic repair welding of electronics and related components. The residue after welding has high impedance, no leakage, and can pass the high voltage test.
Production process of tin products such as lead-free solder balls
Nov 14, 2022
11-14
2022
Tin products are generally composed of raw materials such as tin ingots, lead ingots, and other metal raw materials. They are dissolved at high temperature and mixed with various metals in different proportions in the boiler to make special tin products required by customers.
What are the product features in the application of leaded solder paste?
Nov 14, 2022
11-14
2022
The leaded solder paste is a mixture of flux components and alloy components. The main components of the alloy are tin and lead, so it is called leaded solder paste. In addition to these, solder paste alloys will have trace amounts of impurity metal elements (such as iron, zinc, copper, aluminum, silver, mercury, arsenic, etc.)
leaded solder paste
Portable Solder Wire Drop Test
Nov 11, 2022
11-11
2022
The portable solder wire drop test is mainly to investigate the adaptability of the product to fall freely from a certain height and the integrity of the structure or solder joint after being subjected to such a drop. With the advancement of technology, electronic products are becoming more and more miniaturized, and there are more and more portable electronic products, such as mice, MP3 players and mobile phones.
High temperature storage test of resin solder wire
Nov 11, 2022
11-11
2022
The high temperature storage of resin solder wire is mainly used to examine the influence of temperature and time on the reliability of resin solder wire under storage conditions. For the solder joints of the resin solder wire, it is often encountered in high temperature storage in the use environment.
Specification and classification of solder wire
Nov 10, 2022
11-10
2022
Everyone should be aware of the various specifications of solder wire, and its quality directly affects the welding quality and welding effect. In many industrial welding lines, welding is an indispensable material. Only with welding wire can welding be carried out smoothly. Now It is also widely used in the production and maintenance of the electronics industry in the society.
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