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Selection basis and management of solder paste
Sep 28, 2022
09-28
2022
Solder Paste Selection Basis
1. High-reliability products require high-quality solder paste, depending on the product's value and use.
2. The alloy composition of the solder paste is selected according to the assembly process of the product, the printed board and the components.
(1) Commonly used solder paste alloy components: Sn63Pb37 and Sn62Pb36Ag2.
(2) Components with poor solderability of gold or silver thick film terminals and pins should select silver-containing solder paste.
What are the advantages of low temperature tin wire?
Sep 28, 2022
09-28
2022
What is the difference between low temperature tin wire and usual tin wire? Why use low temperature tin wire, and what advantages does it have over other tin wires?
This has to start from the alloy composition of the low-temperature tin wire. The low-temperature tin wire is a tin wire with Sn and Bi as the main alloy components. The proportion of this tin wire is 42% for Sn and 58% for Bi. The lead-tin wire we usually use is composed of tin-lead alloy, and the lead-free tin wire is basically composed of three metals: tin, silver, and copper. In contrast, bismuth is the focus of low-temperature tin wires.
The price difference of lead-free solder wire with different components
Sep 28, 2022
09-28
2022
The price of tin wire is mainly determined by its alloy composition, technical difficulty and production difficulty. The more commonly used lead-free tin wires in the market include silver-containing lead-free tin wires and conventional lead-free tin wires. Silver is a precious metal, so the higher the silver content of the tin wire, the higher the price. The composition of conventional lead-free tin wire is Sn99.3%Cu0.7%, which is the lowest price lead-free tin wire. In terms of technical difficulty, because the market is very mature, it is not very difficult.
What sign of solder wire is lead-free environmental protection?
Sep 28, 2022
09-28
2022
Solder wire is divided into lead solder wire and lead-free solder wire, so how to distinguish lead and lead-free solder wire? In fact, it can be distinguished from the mark of the tin wire.
The wire diameter, rosin content, and weight are generally written on the label of the solder wire, which are all very easy to distinguish. The wire diameter is marked with mm, such as 0.8mm, which means that the wire diameter is 0.8mm.
Overview and requirements of solder paste
Sep 27, 2022
09-27
2022
Solder paste is also called solder paste. For the introduction of solder paste, solder paste is divided into unleaded solder paste and leaded solder paste. The solder paste produced by double Chile solder paste manufacturers is a 500-gram can, and the lead-free environmental protection is a green plastic can. Leaded for white plastic cans
The relationship between solder wire and fuse?
Sep 27, 2022
09-27
2022
In the solder industry, the questions asked by customers are really ever-changing. One customer asked whether solder wire and fuse can be mixed. What is the relationship between the two? Is there any difference? We also searched for this question. Here are some relevant information to share with you:
The composition of leaded solder wire is an alloy of tin and lead. The proportion of tin and lead is different, and the melting point of the solder wire is also different; the melting point of lead-free solder wire and the temperature required for welding are also different.
How to detect solder bar degree
Sep 27, 2022
09-27
2022
There are many kinds of solder bars, only lead solder bars have more than ten kinds from 15-63 degrees, but the outer packaging is marked with 63/37 molds. It is difficult for non-professional personnel to see the difference between them. Below we will introduce the inspection method of solder strip degree in detail:
1. Identify from appearance
The solder bar has two sides, and the front usually has some company, parameters and other product logos. The backside of the solder bar below 45 degrees usually has a dim light. The surface and back of the 63/37 solder bar have a glossy surface with a bluish-white color below 45 degrees, which can be easily identified based on this phenomenon.
How should electric ferrochrome be used in tin wire welding?
Sep 27, 2022
09-27
2022
The electric soldering iron is used for soldering, and it is one of the indispensable tools for manual soldering; The best composition of its solder wire is composed of 60% tin and 40% lead.
Before using the new electric soldering iron, use a file to file the tip of the soldering iron. After the power is turned on, the color of the soldering iron tip will change for a while, which proves that the soldering iron is hot. Then use the solder wire to put tin on the tip of the soldering iron to make the soldering iron Not easy to be oxidized. During use, the tip of the soldering iron should be kept clean and there should always be solder on the tip of the soldering iron.
What are the regulations for the use of solder paste?
Sep 26, 2022
09-26
2022
Rules for the use of solder paste:
1. Take the solder paste out of the refrigerator, put a "control use label", and fill in the "thawing start time and signature". The solder paste must be completely thawed before opening the lid for use. The thawing time is 6 to 12 hours.
2. Before using the solder paste that has been opened, you must first understand the opening time and confirm whether it is within the validity period of use.
Lead-free environmentally friendly tin bars play an important role in work
Sep 26, 2022
09-26
2022
Lead-free environmentally friendly tin bars play a very important role in welding work. Tin bars made of different alloy compositions also have different properties and uses. When using lead-free environmentally friendly tin bars, you need to pay attention to the following aspects:
(1) Pay attention to the height of the liquid level in
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