Why Difference between Laser Welding Machine Price - dplaser

Laser welding technology has brought about a transformative impact on the manufacturing industry, introducing unparalleled precision and efficiency in material welding processes. The ability to create strong and seamless welds with exceptional accuracy has revolutionized the way products are made. In this article, we will delve into the various factors that influence the CNC laser welding machine price. By gaining a comprehensive understanding of these factors, individuals and businesses can make informed decisions when investing in a laser welder, ensuring optimal results and cost-effectiveness in their manufacturing operations.

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How Much is a small laser welding machine price?

The answer to the question of what is the price of a laser welding machine can vary greatly depending on a number of factors, including the type of laser source, power output, configuration parameters and additional features.

1. Laser Source Type: Different types of lasers, such as fiber lasers, CO2 lasers, or solid-state lasers, have different price ranges based on their technology and capabilities.

2. Power Output: The power output of a laser welding machine affects its price. Higher power lasers generally come with a higher price tag due to their increased performance and versatility.

3. Configuration Parameters: The specific configuration parameters of the laser welding machine, such as beam quality, pulse duration, and spot size, can influence the cost.

4. Additional Features: Some laser welding machines come with advanced features and capabilities, such as integrated robotics, automated systems, or specialized control software. These additional features can impact the overall cost.

5. Brand and Supplier: The reputation, brand value, and service support of the manufacturer or supplier can influence the price of the laser welding machine.

Before choosing a laser welding machine, it is recommended to consult with laser equipment suppliers, compare different models, and evaluate the specific requirements of your application to get an accurate price quote for a laser welding machine.

What is Laser Welding Machine?

Laser welding machine is a type of equipment that utilizes laser technology to join or weld materials together. It employs a high-energy laser beam to melt and fuse the workpieces, creating a strong and precise weld seam. Laser welding machines offer several advantages over traditional welding methods, such as arc welding or gas welding.

What are the Benefits of Laser Welding Machines vs. Traditional Welding Methods?

1. High precision and accuracy

Laser welding utilizes a high energy laser beam for welding and can provide very fine control of the weld. The focus of the laser beam can be very small, resulting in highly precise welding operations. This makes laser welding suitable for applications that require high precision welding, especially micro fine welding such as electronic components, automotive aerospace parts, jewelry, etc…

2. Small heat affected area

The heat generated by laser welding is highly concentrated and affects only a small area around the weld area, thus reducing the thermal impact on the work piece. In contrast, conventional welding methods typically require higher welding temperatures and longer welding times, resulting in larger heat affected areas that can cause distortion and material damage.

3. Fast welding speed:

Laser welding has a fast welding speed and can complete the welding task in a short time. The high energy density of the laser beam allows the material to melt and solidify quickly, thus increasing productivity and making it especially suitable for mass welding and automated production lines.

4. High-intensity welding

Laser welding provides a high-energy heat source that enables a high temperature and cooling rate in the weld area, resulting in a high-intensity welded joint. The melting and solidification process in the weld area is very fast, resulting in a fine grain weld, which enhances the strength and durability of the welded joint.

5. Suitable for a wide range of materials

Laser welding is suitable for welding a wide range of materials, both metallic and non-metallic. It can weld thin plates, pipes, complex shaped workpieces, etc. Whereas traditional welding methods may have limitations for certain materials, such as challenges for welding heat sensitive materials or highly reflective materials.

6. Contactless welding

Laser welding is a non-contact welding method where the laser beam acts directly on the surface of the work piece without contact, thus avoiding contamination, wear or heat transfer problems caused by contact. This is important for the welding of certain special materials and precision components.

What is the Difference between an Expensive and a Cheap Laser Machine?

“What is the difference between an expensive laser machine and a cheap laser machine?”

Laser welding machines have been widely used in the manufacturing industry for their high welding efficiency, quality, speed and ease of operation. Laser welding machines are available in various types by configuration parameters, ranging from $500 to $20,000. The price is hundreds of times higher than that of TIG welding equipment. Such a disparity is really unacceptable. Why laser welding machine prices so high?

The main reasons for an expensive laser machine and cheapest laser welding machine is the configuration of the machine, the functional accuracy and the power level. Expensive laser machines usually have higher precision and more powerful laser beams, which allow them to weld materials with greater precision and speed. They also typically have more advanced features and functions, such as the ability to handle a wider range of materials or a broader range of manufacturing applications.

On the other hand, inexpensive laser machines may not offer the same level of accuracy, but for general manufacturing without too high welding requirements, it is sufficient.

Laser Welding Applications

Laser welding technology is versatile and adaptable. This makes it effective in many industries, enabling high-quality welding of small and large parts.

The prices of handheld laser welding machines and automatic welding machines also differ greatly due to their technical complexity, functionality, and automated production.

There are two types of laser welding machines: automatic welding machines and hang held welding machines. Automatic welding machines require automated configurations such as CCD monitoring systems, control systems, and automatic fixtures or tables. Therefore, automatic welding machines are more expensive than manual welding machines.

Handheld vs. Automatic Laser Welding Machines

The advantages of automated welding over handheld welding include higher efficiency, better quality control, lower error rates, increased safety, and reduced costs. These advantages make automated welding widely used in bulk and precision welding applications.

1. Improved production efficiency: Automated welding systems enable continuous and high-speed welding operations, surpassing the speed and efficiency of manual welding. They can complete a large volume of welding tasks in a short period, thereby increasing productivity.

2. Enhanced welding quality and consistency: Automated welding systems achieve higher welding quality and consistency through precise control and stable welding processes. In contrast, manual welding is susceptible to variations in welding quality and consistency due to factors such as operator skill and fatigue.

3. Reduced human errors: Automated welding systems, controlled by computers, minimize human intervention, thereby reducing the potential for human errors. This improves welding accuracy, reliability, and reduces the occurrence of defects and the need for rework caused by human factors.

4. Increased safety: Welding is a hazardous task involving high temperatures, sparks, and harmful gases. Automated welding systems reduce the time and risk of human operators being exposed to hazardous environments, enhancing workplace safety.

5. Cost savings: While the initial investment in automated welding systems may be higher, they can result in long-term cost savings through improved production efficiency, reduced defects and rework, and lower labor costs.

The price of laser welding machines is primarily influenced by factors such as the type of laser source, power and output energy, system configuration and features, welding range and application requirements, as well as the brand and supplier. When choosing a laser welding machine that suits your specific needs, it is important to consider these factors and strike a balance between price and performance.

There are numerous brands in the laser welding machine, and the cost of the machines can vary. If you have specific functional requirements, you can seek custom laser welding machines from laser equipment manufacturers.

How to Choose the Right Laser Welder for Your Business 

Determine budget: Determine your laser welder based on your limited budget. Knowing your budget will help you narrow it down and find a laser welder that meets your needs.

Consider application: Different types of metal laser welders are suitable for different applications, so choose the laser welder that meets your specific needs. Generally you need to provide the material you want to weld, thickness, accuracy or other welding requirements.

Summary:

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Laser welding is not as prevalent as technologies like MIG, TIG and arc welding. That’s mainly because until recently, it required major investments.  

Around the year however, fiber laser technology made important advances, drastically bringing down costs. And for the last 18 years, further advances have continued to drive down production costs and the cost of ownership of laser welding machines. 

We’ve reached a time where laser welding is not only viable for high-volume production lines, but also for all types of manufacturers. We’re even seeing a rise in handheld devices. 

With laser welding being so accessible, now is a good time to explore this proven process that promises precision, speed, and cost effectiveness. 

Table of Contents

• What Is Laser Welding and How Does it Work?
  • General Information
  • Conduction vs. Keyhole Welding
  • Welding of Dissimilar Metals
  • Adjustable Ring Modes
• When Was Laser Welding Invented?
• What Types of Lasers Can Weld?
• What are the Advantages of Laser Welding?
• What are the Disadvantages of Laser Welding?
• Examples of Laser Welding Machines
  • Battery Welding Machine
  • Handheld System
  • Robot Welding Machine (Remote Welding)
  • Robot Welding of Car Frame

What Is Laser Welding and How Does it Work?

General Information

Laser welding is a precise process that produces very little deformation compared to traditional welding methods. It uses a high-energy laser beam to fuse metals together, creating a strong metallurgical bond. As the energy from the laser beam is absorbed by the surface, the heat causes the surface to melt, forming a molten pool that resolidifies in a few milliseconds. 

Think of laser welding like a magnifying glass and the sun. If you focus enough energy on a metal surface, you can melt it—and even vaporize it in some cases. 

The power density is very high, resulting in a concentrated heat source of millions of watts per cm2.  For a fast laser welding speed or a deep penetration, more laser power is needed. Laser power is the main factor that drives up the cost of a machine. 

Laser welding can be used on any material that can melt and resolidify. This means that it is not only used to weld metals like aluminum, copper, and stainless steel, but also other types of materials, including certain types of thermoplastics, glasses, and composites.

Conduction vs. Keyhole Welding

The two main types of laser welding processes—conduction welding and keyhole welding—work differently.

Conduction welding is a soft process where the laser beam slowly melts the metal. During this type of welding, the metal’s temperature goes beyond its fusion point and achieves the liquid state but never goes into the gaseous state. Heat transfer within the metal is similar in all directions.  

Conduction welding is slower but generates higher-quality results with little or no spatter and low fumes. 

Keyhole welding is a fast but aggressive process that melts and vaporizes the metal, digging deeper into the material. The metal reaches its fusion temperature and even its vaporization temperature in some areas. As a result, part of the melting pool is in the gaseous state and can cause spatter. Heat transfer within the metal is mostly perpendicular to the laser beam.  

Keyhole welding is ideal for high-volume production lines because it is faster, but it can lead to porosity and a higher heat affected zone (HAZ). 

Welding of Dissimilar Metals

Laser welding of dissimilar metals is possible, but it is not always easy or feasible. Different metals have different fusion temperatures, absorb a different percentage of light, and conduct heat at different rates. 

When laser welding dissimilar metals, the two metals do not merge into a homogeneous mixture but rather join at the interface between the two metals. This creates a joint that is not as structurally strong as when welding the same metal.

To address this issue, two strategies are available:

• Filler material can be used to create stronger joints (like other welding techniques). In this case, we’re talking about a process called laser brazing—and not laser welding.
• The laser beam can be oscillated to help fuse the different metals more slowly. This process is called laser wobbling and requires additional optical components. Laser wobbling offers other benefits, as it helps get rid of gasses that would otherwise create porosity in the joints.

Adjustable Ring Modes

One of the best strategies to diminish spatter is to use what we call adjustable ring modes.

While energy is typically focused in a very small point when laser welding, ring modes offer advanced control on how energy is distributed.

A ring surrounding the laser’s spot can be used to preheat the part. This offers better control over the melt pool and, ultimately, diminishes spatter.

To be able to use different ring modes, a fiber optic cable with an outer core is needed to project an “outer” beam (see image).

When Was Laser Welding Invented?

The first experiments with laser welding go back to the s—shortly after Ted Maiman built the first laser. But it wasn’t until , after researchers at the Battelle Memorial Institute did a demonstration of laser welding, that manufacturers began to see real potential for industrial applications. 

To understand how this process has come to hold such an important place in manufacturing, we need to go back to the invention of the laser itself. Here are key technological advancements that have shaped the development and adoption of laser welding as we know it today. 

• – Albert Einstein discovers stimulated emissions, providing the background knowledge needed to amplify light into laser beams.
• – Gordon Gould develops the theoretical framework for the laser.
• – Ted Maiman builds the first laser—a ruby laser— opening the door to potential applications.
• s – Various experiments are conducted to demonstrate the feasibility of laser welding.
• – Researchers at the American Optical Company use an Nd:Glass laser to weld steel and titanium.
• – Elias Snitzer demonstrates the first fiber laser, but it is limited in terms of output and efficiency compared to other lasers.
• – At Bell Laboratories, Geusic et al. invent the Nd:YAG laser, which provides more power and efficiency than Nd:Glass lasers.
• – Researchers demonstrate the practical applications and viability of laser welding at the Battelle Memorial Institute. This paves the way for further development and widespread adoption.
• – At the Western Electric Company, CO2 lasers are used for laser welding for the first time, providing more power and lower costs than solid-state lasers like Nd:YAG lasers.
• s – Fiber lasers that provide higher beam quality and efficiency, lower maintenance, and easier integration are introduced at Southampton University in the UK.
• s – Laser systems begin to be integrated with robotic arms for automated welding processes. These first systems require that the workpiece be positioned close to the laser source.
• s – Advancements in fiber laser technology make laser welding affordable for a wider range of manufacturers. Advancements in scan heads pave the way for remote welding, making it possible to precisely direct laser beams from afar.
• s – Remote laser welding systems become increasingly feasible and commercially available, enabling the delivery of laser energy to the workpiece through fiber-optic cables over longer distances. 

Laser welding technology continues to evolve on a wide range of aspects, including in terms of laser power, optical components, beam quality, scanning heads, and computer control systems. 

What Types of Lasers Can Weld?

Fiber lasers are the most prevalent types of lasers used for welding, but other types of lasers can be used as well, including blue lasers, green lasers, CO2 lasers, Nd:YAG lasers, and diode lasers.  

Let’s look at each type of laser to understand how they can be used for welding. 

• Most proven technology on the market
• High energy efficiency (≈30%) leads to better thermal management and lower operating costs
• Infrared wavelength is well-absorbed by most metals
• Laser beam is generated and guided in a fiber optic cable, leading to a high beam quality for increased precision and a higher energy density for a good penetration depth
• Minimal use of consumables results in low maintenance
• High power is available with seemingly no limit
• Optical design makes them easy to integrate with robots or CNC machines 

• First type of laser ever used for laser welding in industrial applications
• Laser beam cannot be guided by fiber optic cable, leading to lower beam quality
• Optical components are not adapted to robot integration.
• Can weld circular workpieces as the laser can be fixed into position while the workpiece rotates
• High maintenance caused by consumables
• Average energy efficiency (≈20%)

• Proven technology
• Low energy efficiency (≈5%) generates thermal management issues and high operating costs
• Laser beam can be guided by fiber optic cable for improved beam quality, but still difficult to focus the laser beam on a small point
• Mostly used for mold repairs where larger focus is not an issue
• High and costly maintenance due to consumables that need replacement, such as mirrors and lamps

• Technology yet to be proven
• Convert IR wavelength (1,064 nm) into blue light (400–500 nm) or green light (532 nm)
• Because energy is loss during conversion, these lasers have low energy efficiency (≈10%) and complex thermal management
• Very limited in terms of laser power due to inefficient energy conversion
• Wavelength is well-absorbed by copper
• Used for small electronic components

• High energy efficiency (≈40%) leads to better thermal management and lower operating costs
• Beam quality is extremely poor and hard to focus on a small spot size
• Can be used to weld plastics

When choosing a type of laser, one of the important factors to consider is its wavelength. Each type of metal absorbs and reflects wavelengths at varying percentages. If a wavelength is absorbed well, less laser power is needed.

The graph below provides an overview of common types of metals and their absorption spectrum for different wavelengths. 

What are the Advantages of Laser Welding?

Laser welding offers a wide range of advantages compared to other methods like MIG, TIG, and arc welding.  Let’s look at the most important ones.

• The heat affected zone (HAZ) is smaller. The energy of the laser beam is focussed in a very small area and is moved as early as possible. With this level of precision and control, only the areas that need to be heated are heated. There is no unnecessary heat input.
• Parts maintain better mechanical properties. Due to the low heat input, there is less heat distortion and part warping. With other welding methods, excess heat degrades mechanical properties and often creates the need for straightening. This extra step is not required with laser.
• Engineers can design lower weight parts. With other welding methods, mechanical engineers often address the excess heat input by designing parts with thicker materials. But with laser welding, since there is as little heating as possible, it is possible to go for thin materials, which helps minimize product weight and material costs. This is very significant for manufacturers involved in the aerospace and automotive industries, where reducing vehicle weight is a key objective to improve range.
• Small components can be welded due to the high level of precision. This is especially relevant for electronic components, tab connections, and similar applications.
• Laser welding is faster than other processes. Thanks to fiber laser technology, industrial lasers can easily operate at several thousands of watts, which is more than enough to meet the most demanding production requirements.
• Higher-quality welds are direct results of a better control over the process. During welding, the rapid heating and cooling of the material helps prevent quality issues. For example, there is a reduced likelihood of hydrogen embrittlement. Hydrogen embrittlement occurs when hydrogen penetrates the metal, causing mechanical damage. Due to the speed of the process, there is minimal time for hydrogen absorption and diffusion.
• Laser welding is easy to automate due to factors like remote capabilities, minimal wear and tear, and repeatability. This makes it an interesting technology for manufacturers who have trouble finding specialized welders. 

What are the Disadvantages of Laser Welding?

There are not many disadvantages to laser welding, but they are still important to consider and address. Let’s look at them more closely. 

Laser safety is a serious issue during welding. The laser beam and its reflection can cause eye injuries, skin burns, and fire hazards. Ideally, the laser is enclosed in a class-1 laser safety enclosure that contains the laser beam and its reflections.  

For some applications, this can cause headaches. Large parts and structures such as ships can be difficult to contain in an enclosure. Other solutions than enclosures can be explored to contain the beam (for example, some solutions use clamping tools to block the beam).  

Handheld devices can be dangerous for operators who need to wear PPE and follow laser safety control measures. 

The initial investment can be pretty high too. Even if their cost keeps going down, lasers are still more expensive to acquire than alternatives. Add to this that most manufacturers are seeking automated solutions, and you’re looking at a serious investment.  

Examples of Laser Welding Machines

Battery Welding Machine

This battery laser machine is a fully enclosed solution that overcomes the challenges of welding batteries such as clamping adaptability, quality, and speed. It uses SCARA robots to perform clamping with high speed and precision.

Handheld System

This handheld system is an example of how laser welding products are becoming more accessible to a wider range of manufacturers. 

Robot Welding Machine (Remote Welding)

This machine demonstrates the ease of automation of laser welding, featuring remote welding, rotating fixtures, and robot handling of the laser head.

Robot Welding of Car Frame

For large parts like car frames, enclosing the welding process can be problematic in terms of space usage and cost. This machine addresses this problem by enclosing the beam and its reflections with a well-designed clamping tool. This provides complete laser safety without the need for an enclosure.

Conclusion

With its precision, speed, and high level of control, laser welding offers amazing possibilities. For manufacturers new to this technology, it’s important to discuss your application with an expert who can help you:

• Rethink your product with laser welding in mind
• Evaluate if laser welding is a good solution for you
• Perform feasibility studies
• Understand integration implications and costs

If you have a laser welding application for batteries, contact a Laserax expert to discuss your needs. 

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