How to choose a laser welding machine?

   Welding technology is one of the necessary technologies in mobile phone maintenance, so how to choose a welding machine is a very important issue. In this article, China Phonefix Team will introduce the reasons for choosing a laser welding machine and how to choose a laser welding machine.

   Why choose infrared laser welding machine?

   Laser welding machine is a machine that uses high-energy pulsed laser or CW laser to irradiate workpieces for welding. It can adjust the energy of the pulsed laser by setting different laser frequencies and pulse widths, so as to achieve precise welding of the workpiece.

   Why Choose a Laser Welding Machine Over Traditional Forms?

   TIG and MIG welding have long been considered good options for welding small components due to their excellent finish. However, such welds require skill and dexterity, and despite their controllability, there are some drawbacks. Laser welding is an excellent alternative, often outperforming arc welding processes, and its tightly focused beam limits thermal effects. Laser welding can complete welding tasks that traditional welding methods cannot.

   Traditional welding method

   The TIG and MIG processes use shielding gas to create an inert atmosphere around the welding head. With TIG the arc is generated by a tungsten electrode and a hand-held filler material is used, while with MIG welding the electrode is a filler wire. 

   These welders can be adjusted to allow welding of delicate components with a high quality final weld. Another common method is spot welding, which works by sandwiching a part between a pair of electrodes and applying electricity. All arc welding and spot welding processes transfer a lot of heat to the workpiece, which affects the metallographic structure around the weld.

   Laser welding

   The heat required for welding is provided by tightly focused beams as small as two thousandths of an inch in diameter. Welding is performed by firing a series of short pulses to melt the metal to form a high quality weld. Depending on the specific welding task, the same filler material as for TIG welding may be required. Due to the highly focused laser beam, heat input is minimized and parts can be processed almost immediately.

   Advantages of laser welding:

   Heated Area - The heated area of ​​the weld does not spread to the rest of the material, and due to the rapid cooling, the material can be processed almost immediately after the job is completed.

   Deformation - Due to the laser welding process, there is minimal deformation and shrinkage of the material.

   Weld Strength – Due to the narrow bead and excellent aspect ratio of laser welds, the weld strength is indeed superior to that of tungsten inert gas (TIG) and metal inert gas (MIG) welding.

   Metals – Various metals can be welded such as carbon steel, stainless steel, titanium, high strength steel, titanium, precious metals and aluminum.

   Single Sided - Spot welding (which requires contact with both sides of the material) can be replaced by laser welding as it only requires contact with one side.

   Precision – Laser welding provides more precise welds than TIG and MIG welding. You will find it difficult to match the exact welds we can get from the laser, which is 0.025 mm. In addition, laser welding machines do not require the skills required for traditional welding and can work through computer input, unlike traditional welding machines that require a human to operate the machine.

   Scrap - Due to the high precision, laser welding produces less scrap as there are hardly any errors.

   How to choose a laser welding machine?

   The following will introduce two excellent laser welding machines for everyone, so that everyone can better understand the laser welding machine.

   TBK R2201 intelligent infrared laser welding machine, with three-hole laser head, 48MP HDMI camera, 10-inch external HD display. It is used for repairing electronic circuit boards of mobile phone pads and tablet computers. It functions as follows:

• Thermal imaging diagnosis, fast and accurate maintenance and replacement.
• Heating solder paste, heating black solder paste, the heating speed is fast and has no effect on the non-heating area.
• The temperature control can be adjusted freely.
• Turn the laser head heating knob to adjust the range.
• Equipped with high performance heating chip.
• The thermal imaging motherboard is connected to the positive and negative poles for automatic detection.

   

   SUNSHINE SS-890D infrared laser desoldering machine with microscope HDMI 48MP camera 10 inch display. It has the functions of fault diagnosis, laser heating disassembly, BGA CPU IC welding, and is suitable for mobile phone maintenance.

   It supports desoldering of all models/brands of mobile phone motherboards and other products with motherboards.

   Use the infrared camera to easily detect the abnormal area of the motherboard, use the visible light camera to extract the outline of the motherboard, flexibly zoom in on the details of the motherboard, and quickly and accurately locate the problem.

   It is not only a short-circuit rapid diagnostic instrument, but also an electron microscope, or a desoldering station, and captures/videos.

   Temperature alarm can be detected, the temperature can be manually adjusted according to the situation, and the main board can be desoldered to monitor whether the temperature reaches the melting point.

   Hope the above content is helpful to you. If there are any deficiencies, everyone is welcome to comment in the comment area. We are always looking forward to your reply.