In the daily use of welding machines, I believe everyone has encountered equipment usage problems. Below, the editor will share some personal opinions on the actual operation and maintenance of the welding machine.
Firstly, we need to understand the working principle of the welding machine. The collision welding machine is actually a resistance welding machine. Its principle is to use the resistance heat and a large amount of plastic deformation energy in the welding area itself, and use the high-temperature arc generated instantly between the positive and negative poles to melt the welded material, so that the two separated metal crystals are instantly combined, producing a sufficient amount of grains on the joint surface to produce a weld seam. Simply put, it is to generate instantaneous high temperature through a strong current, thereby melting the contact surface and achieving the purpose of combining the two. This requires that the joint surface must be flat and free of impurities, especially when welding thin plates. Any slight unevenness can cause misalignment under instant power and mutual compression, which cannot achieve the welding effect. Just like argon arc welding, the flatness of the joint surface is a basic requirement, and the butt welding machine achieves the welding purpose in an instant, so its requirement for flatness will only be higher. This is a basic requirement. Secondly, taking the steel ring as an example, the two ends of the joint surface (the part where they intersect after being rolled) must be parallel and cannot have an angle. This requires that the quality of the previous roll circle be well controlled, because if there is an angle, there may still be an angle on the joint surface after clamping it with a card cutter on the collision welding machine. Simply put, it means that at both ends of the steel ring joint, one end is tightly clamped, while the other end is not clamped when viewed from bottom to top, leaving a gap. The consequence of this is that the clamped end achieves the welding effect, and a fiery red weld seam will appear in the initial stage after welding. The end with a gap, which was not clamped before, cannot achieve that effect under the same welding stroke, resulting in blackening and not being welded firmly at all. That is to say, they have already completed the welding, and you have only welded half of it. The consequences can be imagined. Furthermore, in situations where both of the above aspects have been achieved, we may sometimes encounter unsatisfactory welding conditions, such as uneven heating of the joint surface, which is related to uneven clamping between the upper and lower copper electrodes. Our current method is to pad copper plates wherever there is less heating.
The above three points should be important welding precautions. Regarding the adjustment of parameters such as welding current, pre pressure, and clamping force, there are usually corresponding parameters for different products, which can be accessed on the operation panel.
Regarding the maintenance and upkeep of the welding machine, a few days ago a machine came back for maintenance, so let me share my opinion. We may not be very clear about the relatively professional maintenance items, but we should at least pay attention to some simple maintenance.
For example: 1. The positive and negative electrodes should have good conductivity and no poor contact. This requires the electrode to be kept clean and free from oil stains, discarded copper sheets, and so on.
2. Check whether the power connectors of the welding machine are firmly connected without any looseness. Especially on the transformer side.
3. Unless there are special circumstances, do not adjust some unique parameter values, including some items that can only be fine tuned, such as the front and rear balance of copper electrodes. Do not adjust this item casually until the end, and even if necessary, only fine tune it. We need to find breakthroughs from other places.
4. Control of cooling water pipes. Promptly deal with water leakage, replace damaged water pipes, and tighten the joints, especially the water pipes on the copper electrode.
5. Please have professional personnel conduct a comprehensive inspection and maintenance once a year.
The above is my opinion on the collision welding machine, from the actual usage precautions to maintenance and upkeep. I hope everyone can work together to actively contribute to the good operation of the welding machine, unite as one, and pool their wisdom and efforts. Thank you everyone!
Dongguan Chuangde Laser Intelligent Technology Co., Ltd
One stop laser welding solution service provider
