SAN Fiber Laser Cutting Machine

Jewelry laser welding machines are mainly used for gold and silver jewelry hole filling, spot welding, and repair welding. Laser deposition welding uses laser high heat energy and concentrated fixed-point welding technology. The surface heat diffuses to the inside through conduction. By controlling the width, energy, peak power, and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully used in gold and silver jewelry processing and micro and small parts welding.

Features of jewelry laser welding machine

1. The most advanced automatic shading system is used to eliminate the stimulation of light to the eyes during work;

2. The laser beam can achieve time and energy splitting, can perform multi-beam processing at the same time, and the welding speed is significantly improved, so that users can complete the processing orders efficiently and with high quality in a short time;

3. Laser welding is seamless welding, without the need for external force; the energy is highly concentrated during welding, no consumables are required during welding, and the toughness after welding is at least equivalent to the parent material; the current laser waveform of the welding equipment can be set arbitrarily, which can be applied to various materials to achieve the best effect;

4. The heat-affected zone is small, the laser beam can be focused on a very small area, and small and closely spaced components can be welded; precision parts of heterogeneous metal materials can be realized Welding;

5. High-speed welding can be achieved under automation, and it can also be digitally or computer-controlled to achieve precision processing; no remelting will occur during welding;

6. For high-melting-point, refractory, and difficult-to-weld metals, it can be easily welded (such as titanium alloys, aluminum alloys, etc.) with good results; the mechanical strength after the weld is often higher than that of the parent material;

7. Using professional motion control software, the microcontroller sets the graphics mode, which can complete automatic or semi-automatic spot welding, butt welding, lap welding, sealing welding, single-segment straight line in the plane, arc and other track welding;

8. Humanized design of laser welding, ergonomic, no fatigue for long-term work, 24-hour continuous working ability, stable working performance of the whole machine, maintenance-free operation.

Application Industry

Widely used in mobile communications, electronic components, new energy, jewelry, hardware products, precision instruments, auto parts, craft gifts and other industries. The scope of use includes: jewelry, accessories, golf heads and aluminum alloy dentures, etc. It is particularly suitable for filling holes in gold and silver jewelry, spot welding sand holes, repairing seams and claws of inlaid parts, etc.

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The welding skills of jewelry laser spot welding machines mainly include cross-line alignment, testing with scraps of the same material, emergency handling, clean work surfaces, and the use of filler materials.

‌Cross-line alignment‌: In daily use, you need to pay attention to check whether the cross-line is aligned, because this directly affects the welding effect and the accuracy of the welding position.

‌Same material scrap test‌: Before formal welding, it is recommended to use scraps or waste materials of the same material for testing to adjust the parameters and ensure the welding effect.

‌Emergency handling‌: If you encounter an emergency during welding, such as abnormal noise from the laser, you should immediately press the change direction and quickly cut off the switch power.

‌Work surface clean‌: It is very important to keep the work surface clean, because oxides or contaminants may affect the welding quality.

‌The use of filler materials‌: Filler materials can be used for welding as needed. If larger welding materials are required, the end of the filler material can be shot onto a larger diameter solder ball and then welded.

These skills are not only applicable to jewelry laser spot welding machines, but also to other types of laser welding machines, which help improve welding efficiency and quality.

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‌The debugging skills of the spot welder are essential to ensure the quality and efficiency of welding. Here are some key debugging skills and steps:‌

‌Current and voltage adjustment‌:

Initial adjustment: Adjust the current knob to the minimum and the voltage knob to the maximum for test welding. Keep the voltage unchanged and gradually increase the current until a satisfactory welding effect is obtained. Then, adjust the current knob to the maximum and the voltage knob to the minimum for test welding. Keep the current unchanged and gradually increase the voltage until a satisfactory welding effect is obtained.

Fine adjustment: Adjust both the current and voltage knobs to the minimum, and then gradually increase both. The process requires repeated adjustments until the best welding match is found, that is, the weld is best formed, the sound is softest and easy to control.

‌Welding pressure adjustment‌:

The welding pressure is achieved by adjusting the pressure reducing valve installed on the cantilever of the welding machine, and the pressure gauge indicates the air pressure. Adjust the welding pressure according to the material and thickness of the weld to avoid spatter caused by insufficient pressure or poor welding caused by excessive pressure.

‌Adjustment of electrode speed‌:

The electrode downward speed is controlled by adjusting the limiting valve on the left side of the bottom of the cylinder. When the regulating knob of the limiting valve is adjusted clockwise, the speed decreases; otherwise, it increases.

‌Adjustment of time and welding parameters‌:

Select the appropriate specification according to the material and thickness of the weldment, set the function selection knob to the "test" position, step on the foot switch to half, and the upper electrode descends the first level of travel. Step on the foot switch to the bottom, the welder moves according to the program, but no welding current passes. After the action is completely normal, set the function selection knob to the "welding" position, and welding can be carried out.

The adjustment of voltage, current and time is usually set to the required parameter value through the corresponding switch, and then fine-tuned through trial welding until the best welding effect is obtained.

‌Other precautions‌:

Regularly clean the oxide and dust on the electrode surface and keep the electrode clean to ensure good contact.

Regularly check and maintain the machine lines such as the power cable and electrode line of the spot welder, and replace the aging or worn lines in time to ensure the welding quality and work production of the machine.

Adjust parameters such as gas pressure and electrode force according to actual conditions to ensure welding efficiency and quality.

Through the above steps and precautions, the spot welding machine can be effectively debugged to ensure the smooth progress and high-quality completion of the welding process.

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Effects of shielding gas:

In laser welding, shielding gas will affect welding formation, weld quality, weld penetration and weld width. In most cases, blowing in shielding gas will have a positive effect on welding, but it may also bring adverse effects.

Positive effects:

1) Correctly blowing in shielding gas can effectively control the welding molten pool and reduce or even prevent oxidation;

2) Correctly blowing in shielding gas can effectively reduce the spatter generated during welding;

3) Correctly blowing in shielding gas can promote the uniform spreading of the welding molten pool during condensation, and promote the uniform and beautiful welding formation;

4) Correctly blowing in shielding gas can effectively reduce the shielding effect of metal vapor plume or plasma cloud on the laser, and increase the efficient use rate of the laser;

5) Correctly blowing in shielding gas can effectively reduce welding porosity.

As long as the gas type, gas pressure and blowing method are selected correctly, the ideal effect can be achieved.

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