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Home > Industry News
The relationship between residual debris and humidity after lead-free solder paste soldering

The relationship between residual debris and humidity after lead-free solder paste soldering

Nov 10, 2022

11-102022

In order to further improve the soldering effect, flux must be added to the solder paste. However, due to the active ingredients of the flux and acidic liquids such as organic acids, there will be corrosive problems after the soldering process. If it is not cleaned, it may lead to to component safety and reliability. Among such acidic liquids, "weak organic acids" are relatively common, such as carboxylic acids, which are polar compounds and have certain compatibility with water.
How to judge the quality of solder wire ?

How to judge the quality of solder wire ?

Nov 09, 2022

11-092022

If the solder joint is relatively white, it means that the lead content of the solder wire is relatively large, and the quality of the solder wire is poor. For example, only a small part of the solder joint of the 40 degree solder wire is white in the middle, and the surrounding brightness accounts for 70%-80% of the entire solder joint; while the whitening of the solder joint of the 35 degree solder wire accounts for 60%-65% of the entire solder joint. , the surrounding light accounts for 35%-40% of the entire solder joint;
What are the changes in the temperature of the solder paste when it is heated?

What are the changes in the temperature of the solder paste when it is heated?

Nov 08, 2022

11-082022

​What are the characteristics of the change of solder paste in the process of soldering heating?
First, the solvent used to achieve the desired viscosity and screen printing properties begins to evaporate and the temperature rise must be slow (about 3°C ​​per second to limit boiling and splashing and prevent the formation of small tin beads, also, some components are sensitive to internal stress, If the temperature outside the component rises too quickly, it can cause breakage.
Safety precautions for solder wire welding

Safety precautions for solder wire welding

Nov 08, 2022

11-082022

1. Improve welding technology, improve welding process and materials
Improve welding technology, realize mechanization and automation of welding operation, isolate people from welding environment, and fundamentally eliminate the harm of soldering operation to human body. By improving the welding process, it is avoided that the solderer welds in a container with extremely poor ventilation, thereby greatly improving the working conditions of the solderer; by improving the tin wire material, choosing lead-free and environmentally friendly tin wire is also one of the effective measures to reduce welding hazards.
Classification method of solder paste

Classification method of solder paste

Nov 07, 2022

11-072022

Solder paste is mainly used for the welding of electronic components such as PCB surface resistance, capacitors and ICs in the SMT industry. Solder paste can be divided into many types due to the production process, processing method and melting point.
1. According to environmental protection standards, it is divided into two categories: lead-free solder paste and leaded solder paste.
2. Dispensing solder paste and printing solder paste according to the tin method.
No-clean environment-friendly lead-free solder wire

No-clean environment-friendly lead-free solder wire

Nov 07, 2022

11-072022

1. No-clean solder wire is a kind of solder wire. After the no-clean solder wire is soldered, the residue is not only very small, but almost no need to be cleaned.
2. Some of the flux of ordinary solder wire contains hydrochloric acid, which is easy to corrode the welding components such as circuit boards and pins, so it is troublesome and unsafe to clean the soldered places after welding.
Application of tin compound

Application of tin compound

Nov 03, 2022

11-032022

The classification, characteristics and application of electroplated tin, tin-lead alloy and tin-bismuth alloy are summarized.Electroplating lead-tin alloys have different components and different uses. For example, alloys with tin content of 5% to 10% are used for anti-friction coatings, alloys with tin content of 15% to 25% are used for lubrication and flux coatings, and alloys with tin content of 45% to 55% are used for seawater corrosion prevention.
Introduction to the uses and application areas of tin

Introduction to the uses and application areas of tin

Nov 03, 2022

11-032022

Tin is one of the earliest metals used by human beings, and it is also one of the metals with a wide range of industrial uses. It has excellent characteristics such as soft texture, low melting point, strong malleability, strong plasticity and non-toxicity. Alloys, chemical products, etc. It is widely used in electronics, information, electrical appliances, chemical industry, metallurgy, building materials, machinery, food packaging, atomic energy and aerospace industries. With the development of economy, its application fields will continue to expand. The specific application is as follows.
What should be paid attention to when purchasing solder bars

What should be paid attention to when purchasing solder bars

Nov 02, 2022

11-022022

Different industries have different requirements for soldering. Some product industries must use solid tin wire, and some products must use rosin tin wire. Rosin can improve the fluidity of liquid solder and can also prevent the oxidation of the metal to be soldered and form an oxide film.
Classification of low temperature tin alloys

Classification of low temperature tin alloys

Nov 02, 2022

11-022022

The main alloying elements of low temperature tin alloys are lead, antimony, copper and so on. Tin alloy has low melting point, low strength and hardness, high thermal conductivity and low thermal expansion coefficient, atmospheric corrosion resistance, excellent anti-friction performance, and easy to weld with steel, copper, aluminum and its alloys and other materials , is a good solder and a good bearing material.
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Catherine Fannie Avril
Chtherine Fannie Avril