Views: 0 Author: Site Editor Publish Time: 2025-09-12 Origin: Site
In metal processing, both spot welders and laser welding machines are commonly used equipment. Many people struggle when choosing between the two: which one is more suitable for their products, PDKJ's spot welder or laser welding machine? In fact, the key lies in the material, thickness, and processing requirements of the product. Today, let's use straightforward language to explain the difference between the two and help everyone quickly choose the right device.
In terms of welding efficiency, spot welders are suitable for batch spot welding. For example, when welding workpieces with multiple weld points, a spot welder can complete a weld point in just a few seconds, making it very fast. Laser welding machines, on the other hand, require precise alignment during welding. Their single-point welding speed is not as fast as that of spot welders, but they are suitable for continuous seams or complex shape welding.
When it comes to welding results, the weld points made by spot welders have obvious indentations, and the weld seam surface is not smooth. Subsequent grinding may be required. Laser welding machines have a small heat-affected zone, with fine and smooth weld seams that look more refined and rarely require secondary processing.
I. Material: Different Metals Require Different Welding Machines
Not all metals can be welded with both types of equipment. The material properties must be considered:
Common metals such as low - carbon steel and stainless steel can be welded with both types of welding machines. However, when welding aluminum and copper with a spot welder, attention must be paid because these two metals have strong electrical conductivity and dissipate heat quickly. A high - power spot welder is needed to ensure a firm weld point. When welding aluminum and copper with a laser welding machine, higher laser energy is required. Ordinary low - power laser welding machines may not produce a strong weld.
For metals with coatings, such as galvanized or nickel - plated sheets, the coating can be easily damaged by high temperatures when using a spot welder, affecting the rust - proof effect. Laser welding machines, with their concentrated heat, cause less damage to the coating and are more suitable for these materials.
Special metals like titanium and magnesium alloys are difficult to melt using a spot welder. Laser welding machines are basically the only option for these materials.
II. Thickness: Different Thicknesses Require Different Equipment
The thickness of the workpiece directly affects the welding result. When choosing equipment, it is important to match the thickness range.
PDKJ's spot welder is more suitable for thin - material welding. Metal pieces with a thickness of 0.5 - 12mm are best suited for spot welding. For example, the thickness of most computer case shells and automotive parts falls within this range. Spot welding produces firm weld points and is efficient. If the workpiece thickness exceeds 12mm, it is difficult for a spot welder to penetrate completely, and "virtual welding" may occur. This means that although it appears to be welded, it is actually not firm.
Laser welding machines have a wider range of compatibility. They can weld both thin materials (0.05 - 2mm) and medium - thick materials (2 - 8mm). When welding thin materials, laser welding machines do not leave obvious marks like spot welders, making them suitable for products with high appearance requirements, such as precision electronic components. When welding medium - thick materials, simply increasing the laser energy can ensure penetration. However, when the thickness exceeds 8mm, the welding speed will slow down, and the cost will increase.
V. How to Choose? Make a Judgment Based on Product Requirements
If your product is a thin - material metal piece produced in batches, such as hardware accessories or home appliance parts, and you are looking for low cost and high efficiency, PDKJ's spot welder is more suitable. If your product has high requirements for welding appearance, such as precision instrument parts or decorative metal pieces, or if you need to weld medium - thick materials or special metals, then a laser welding machine is a better match.
However, there are exceptions. For example, if a product requires both spot welding and a small amount of continuous seam welding, a device that can handle both functions is needed, namely a custom - made welding machine.
If you have welding machine requirements, please contact Ms. Zhao
E-Mail: pdkj@gd-pw.com
Phone: +86-13631765713
