Home News

Talking about the classification characteristics of welding materials in SMT patch processing

Certification
China Shenzhen Eton Automation Equipment Co., Ltd. certification
China Shenzhen Eton Automation Equipment Co., Ltd. certification
Customer Reviews
ETON servisi çok özenli, mühendisler çok sabırlı ve makine kullanımı kolay.

—— Fikret

جودة الآلة ETon جيدة جدا وسريعة جدا، والآلات سهلة التشغيل. وكانت هناك خدمة ما بعد البيع، وكانت هناك تجربة ممتعة جدا للتسوق في الصين

—— Nadim

Cảm ơn bạn rất nhiềuETON vì đã giúp chúng tôi thiết kế toàn bộ chương trình dây chuyền sản xuất SMT, cho phép chúng tôi tiết kiệm chi phí. Cũng xin cảm ơn kỹ sư hậu mãi của công ty bạn đã đến nhà máy của chúng tôi để gỡ lỗi máy cá nhân, và dịch vụ này rất chuyên nghiệp và chu đáo. Hy vọng công ty của bạn ngày càng tốt hơn!

—— ngyum

ETON machine mounting speed is very fast, the quality is also very good, long life, after-sales service is very comprehensive, Worth having.

—— Sanjay

Thank you for your considerate service. You can reply my questions online 24 hours a day. The quality of your machines is very good.The installation plan you have given is excellent! Our productivity has improved, and we've had good revenues.We look forward to the opportunity to continue our cooperation.

—— tim

Çok fonksiyonlu bir makine ampul, lamba ve sürücü, çok akıllı sopa olabilir!

—— cagin

The HT-XF lamp high-speed placement machine is really amazing. The production capacity can reach 120,000 per hour. The speed is so fast but the accuracy is very high.

—— praveen

The machine is simple and easy to operate, and the service is very good. It also provides free software updates for life. ETON is a very good manufacturer

—— pawan

RT-1 hızlı ve yüksek hassasiyetli

—— abbas

The quality of your machines is very good, our company has been put into production

—— mohamed

I'm Online Chat Now
Company News
Talking about the classification characteristics of welding materials in SMT patch processing
Latest company news about Talking about the classification characteristics of welding materials in SMT patch processing

Talking about the classification characteristics of welding materials in SMT patch processing

 

According to its components, solder in SMT chip processing can be divided into tin-lead solder, silver solder, and copper solder. According to the environmental humidity used, it can be divided into high-temperature solder (solder used under high temperature) and low-temperature solder (solder used under low temperature environment). In order to ensure the quality of soldering during patch processing, it is important to choose different solders depending on the object to be soldered. In the assembly of electronic products, tin-lead series solders, also called solders, are generally used.

 

Solder has the following characteristics:

1. Good conductivity: Because tin and lead solder are good conductors, its resistance is very small.

2. Strong adhesion to component leads and other wires, not easy to fall off.

3. Low melting point: It can be melted at 180℃, and it can be welded with 25W external heating type or 20W internal heating type electric soldering iron.

4. It has certain mechanical strength: because the strength of tin-lead alloy is higher than that of pure tin and pure lead. In addition, due to the light weight of the electronic components, the strength requirements of the solder joints in the SMT patch are not very high, so the strength requirements of the solder joints can be met.

5. Good corrosion resistance: The printed circuit board that has been welded can resist atmospheric corrosion without applying any protective layer, thereby reducing the process flow and reducing the cost.

Among tin-lead solders, those with a melting point below 450°C are called soft solders. Anti-oxidation solder is the solder used in automated production lines in industrial production, such as wave soldering. When this liquid solder is exposed to the atmosphere, the solder is extremely easy to oxidize, which will cause false soldering, which will affect the quality of soldering. Therefore, adding a small amount of active metal to the tin-lead solder can form a covering layer to protect the solder from further oxidation, thereby improving the soldering quality.

Because tin-lead solder is composed of two or more metals in different proportions. Therefore, the properties of tin-lead alloys will change as the ratio of tin-lead changes. Due to different manufacturers, the configuration ratio of tin-lead solder is very different. In order to make the solder ratio meet the needs of soldering, it is important to choose a suitable ratio of tin-lead solder.

latest company news about Talking about the classification characteristics of welding materials in SMT patch processing  0

The commonly used solder matching ratios are as follows:

1. tin 60%, lead 40%, melting point 182℃;

2. tin 50%, lead 32%, cadmium 18%, melting point 150℃;

3. tin 55%, lead 42%, bismuth 23%, melting point 150℃.

There are several shapes of solder, such as wafer, ribbon, ball, and solder wire. The commonly used solder wire contains solid flux rosin inside. There are many types of solder wire diameter, commonly used 4mm, 3mm, 2mm, 1.5mm and so on.

Pub Time : 2021-06-10 11:36:40 >> News list
Contact Details
Shenzhen Eton Automation Equipment Co., Ltd.

Contact Person: Ms. Linda

Tel: 0086 13620202581 (Whatsapp/Wechat)

Fax: 0086-755- 29502066

Send your inquiry directly to us (0 / 3000)