Why Thermal Stability Matters in Handheld Laser Welding

Handheld laser welding offers flexibility and mobility that traditional fixed stations cannot match. However, this flexibility also introduces a hidden challenge: constantly changing thermal conditions. As operators move, change speed, adjust angles, or weld thin and reflective materials, the heat load on the laser source fluctuates in real time. Without proper temperature control, these fluctuations can quietly undermine welding quality.

The Invisible Impact of Temperature Fluctuations
Laser sources are highly sensitive to temperature changes. Even a small increase in internal temperature can affect beam stability, leading to oxidation, porosity, or inconsistent weld seams. These issues often appear as quality problems on the surface, while the root cause lies in thermal instability inside the system.

How the RMFL-3000 Manages Heat
The RMFL-3000 handheld laser welding chiller is designed to address these challenges through a precisely controlled refrigeration cycle. Using a closed-loop system that includes a compressor, condenser, throttling device, and plate heat exchanger, the chiller continuously removes excess heat from the laser system. This process maintains a stable operating temperature, even when welding conditions change suddenly.

Dual-Circuit Cooling for Better Control
Handheld laser welders typically require different cooling conditions for the laser source and the welding torch. The RMFL-3000 meets this need with a dual-circuit cooling design, allowing each component to operate within its ideal temperature range. By preventing thermal interference between the two circuits, the chiller minimizes thermal drift and helps maintain consistent beam focus and energy delivery.

Consistent Welding Starts with Stable Cooling
Effective temperature control plays a key role in achieving repeatable, high-quality welding results. By stabilizing the laser’s thermal environment, the RMFL-3000 supports cleaner welds, reduces rework, and improves efficiency during long production runs. In handheld laser welding, where operating conditions are rarely constant, reliable cooling becomes an essential part of the system rather than an afterthought.

Source: https://www.teyuchiller.com/how-the-teyu-rack-chiller-stabilizes-handheld-laser-welding.html

What is handheld fiber laser welding machine?What are the advantages and applications?

Handheld fiber laser welding machine is a kind of novel laser welding machine. Its welding is non-contact. During operation, no pressure needs to be added. Its working principle is to project high energy and high intensity laser light on the surface of the material. Through the interaction between the material and the laser light, part of the inside of the material will melt and then become cooling crystallization to form the welding line.

Handheld fiber laser welding machine fills the blank of handheld welding in the laser industry. It changes the working pattern of traditional laser welding machine by using handheld welding instead of fixed light path. It is more flexible and allows for longer welding distance, making laser welding at the outdoors become possible. 

Handheld fiber laser welding machine can realize laser welding of long distance and large work piece. It has small heat affecting zone and won’t lead to deformation of the work pieces. Besides, it can also realize penetration fusion welding, spot welding, butt welding, stitch welding, seal welding and so on. 

Outstanding features of handheld fiber laser welding machine

1. Long welding distance. The welding head is often equipped with optical fiber of 5m-10m so that outdoor welding is also suitable. 

2. Flexibility. Handheld fiber laser welding machine is equipped with caster wheels, so users can move it anywhere they want. 

3. Multiple welding methods. Handheld fiber laser welding machine can easily work on complicated, irregular-shaped and large work pieces and realize welding of any dimension.

4. Fantastic welding performance. Handheld fiber laser welding machine has higher energy and higher density, comparing with traditional welding technique. These features enable it to achieve much better welding performance. 

5. No polishing required. Traditional welding machine requires polishing on the welded parts to ensure the smooth surface of the work piece. However, for handheld fiber laser welding machine, it doesn’t require polishing or other post-processing. 

6. No consumables required. In traditional welding, operators need to wear goggles and hold the welding wire. But handheld fiber laser welding machine doesn’t require all those, which reduces the material cost in the production. 

7. Built-in multiple alarms. The welding nozzle can only switch on when it touches the work piece and switch off automatically when it is way from the work piece. Besides, there is tact switch designed with temperature sensing function. This is much safer for the operator. 

8. Reduced labor cost. Handheld fiber laser welding machine is easy to learn and doesn’t require much training. Ordinary people can also learn it very quickly. 

Application of handheld fiber laser welding machine

Handheld fiber laser welding machine is very ideal for large-medium sized sheet metal, equipment cabinet, aluminum door/window bracket, stainless steel basin and so on. Therefore, it is gradually introduced in many industries, such as kitchenware industry, home appliance industry, advertising industry, furniture industry, automobile component industry and so on. 

Every handheld fiber laser welding machine goes with a water chiller. It serves to cool down the fiber laser effectively inside. S&A Teyu air cooled rack mount chiller RMFL-1000 is ideal for cooling 1-1.5KW  handheld fiber laser welding machine. Its rack mount design allows it to be placed on the rack, which is quite space efficient. Besides, RMFL-1000 water chiller complies with CE, REACH, ROHS and ISO standard, so you don’t have to worry too much about the certification thing. For more information about RMFL-1000 air cooled rack mount chiller, click https://www.teyuchiller.com/air-cooled-chiller-rmfl-1000-for-1kw-1-5kw-handheld-fiber-laser-welding-machine_p240.html 

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/air-cooled-chiller-rmfl-1000-for-1kw-1-5kw-handheld-fiber-laser-welding-machine_p240.html 

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 300 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 8 0,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

Why there are two temperature controllers in handheld laser welding machine chiller RMFL-1000?

Some users are curious that why there are two temperature controllers in handheld laser welding machine chiller RMFL-1000 and what they are used for. Well, as we know, RMFL-1000 chiller is designed for cooling handheld laser welding machine which is supported by fiber laser source. As a fiber laser chiller, RMFL-1000 chiller model also has a dual temperature control system design as CWFL series does. That means it has two temperature controllers. One serves for controlling the temperature for the fiber laser and the other serves for controlling the temperature for the laser head. These two temperature controllers work independently so that the cooling performance of the chiller can be guaranteed.

After 19-year development, we establish rigorous product quality system and provide well-established after-sales service. We offer more than 90 standard water chiller models and 120 water chiller models for customization. With cooling capacity ranging from 0.6KW to 30KW, our water chillers are applicable to cool different laser sources,laser processing machines, CNC machines, medical instruments, laboratory equipment and so on.

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/air-cooled-chiller-rmfl-1000-for-1kw-1-5kw-handheld-fiber-laser-welding-machine_p240.html

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 300 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 8 0,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

Will handheld laser welding machine replace TIG welding?

 Laser processing has experienced a rapid development in the past 10 years in China and is gradually replacing traditional techniques. From screen printing to laser marking and engraving, from punch press to laser cutting, from chemical agent washing to laser cleaning, these are great changes in the processing techniques. These changes are more eco-friendly, more efficient and more productive. And that is the progress brought by the laser technique and a trend that is “meant to be”.

Handheld laser welding technique develops rapidly

In terms of welding, the technique also experiences changes. From the original normal electrical welding, arc welding to the present laser welding. The metal oriented laser welding has become the most important application for the time being. Laser welding has been developing in China for nearly 30 years. But in the past, people often used small power YAG laser welding machine to do the welding job, but small power YAG laser welding machine was in low level of automation and required manual loading and unloading. What’s more, its working format was pretty small, which made it hard to process big workpiece. Therefore, laser welding machine didn’t get wide application at the beginning. But later, in the past few years, laser welding machine has have big development, especially the advent of fiber laser welding and semiconductor laser welding. For the time being, laser welding technique has been widely used in automobile, aerospace and other high-end industries. 

In the end of 2018, handheld laser welding machine began to gain its popularity. Thanks to the reduce cost of fiber laser and the established technique of fiber transmission and handheld welding head. 

The reason why handheld laser welding machine gets popular so fast is that it is easy to use and flexible. Comparing with traditional laser welding machine which has high technical threshold, handheld laser welding machine doesn’t require fixture and motion control. It is more acceptable for most of the small-medium enterprises. 

Take stainless steel welding for example. Stainless steel welding is quite normal in our daily life and most of them adopt normal TIG welding or spot welding. After many years of development, manual operation is still the major operation and there are quite a lot of these kinds of welders. You can see the trace of TIG welding in stainless steel objects in kitchenware, bathroom products, doors and windows, furniture, hotel decorations and many other industries. TIG welding is often used to weld thin stainless steel sheet or pipe. But now people just replace TIG welding by handheld laser welding and they are very similar in operation. For handheld laser welder, people will only need the training of less than a day, which shows great potential of handheld laser welding machine replacing TIG welding. 

It is a trend that handheld laser welding machine replaces TIG welding machine

TIG welding often requires melted welding wire for connection, but that often lead to protruding on the weld part. However, handheld laser welding doesn’t require welding wire and has smoother weld part. TIG welding has been developing for many years and has the biggest user base while handheld laser welding is a kind of novel technique with fast development and only accounts for small use base. But it is a trend that handheld laser welding will replace TIG welding. For the time being, with the cost being considered, TIG welding is also very popular.

Nowadays, TIG welding machine only costs around 3000RMB. As for handheld laser welding machine, in 2019, it cost over 150000RMB. But later as the competition becomes more fierce, the number of handheld laser welding machine producers also increased, which lowers the price to a great extent. Nowadays, it only costs around 60000RMB. 

TIG welding often realizes as spot welding at certain spots to reduce manual labor and materials. But for handheld laser welding, it performs welding all the way through a welding line. This makes handheld laser welding more stable than TIG welding. The common powers of handheld laser welding machine include 500W,1000W,1500W or even 2000W. These powers are sufficient for thin steel sheet welding. The current handheld laser welding machines have become more and more compact and many parts including industrial process chiller can also be integrated into the whole machine with more flexibility and lower price. 

S&A Teyu process cooling system contributes to the wide application of handheld laser welding

As handheld laser welding will replace TIG welding in the coming future, its components like fiber laser source, process cooling system and welding head will also have great demand. 

S&A Teyu is an industrial refrigeration device supplier with 20 years of experience and is dedicated to providing high performance industrial process chillers ideally suited for different kinds of laser device. For handheld laser welding machines, S&A Teyu promoted the RMFL series laser water chillers. This series of process cooling system features rack mount design, space efficiency, ease of use and low maintenance, which makes it ideal for cooling handheld laser welding machine. Find out more information about this series of chiller at https://www.teyuchiller.com/fiber-laser-chillers_c2

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/fiber-laser-chillers_c2

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 300 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 8 0,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

What does E2 alarm suggest in handheld laser welding machine rack mount chiller?

A Bulgarian handheld laser welding machine user had a rack mount water chiller and recently his chiller triggered E2 alarm. So what does E2 alarm suggest? Well, E2 alarm suggests the water temperature of the laser process chiller is too high. There are a few reasons and solutions for this kind of alarm.

1.If the alarm occurs to the newly bought rack mount water chiller, that could be because the chiller doesn’t have sufficient cooling capacity. In this case, change for a bigger one;
2.If the alarm occurs to the chiller which has been used for a certain period of time, that could be because there is serious dust problem in the dust gauze and the condenser. It is suggested to remove the dust in time;
3.The room temperature is too high. In this case, keep the laser process chiller in the room whose temperature is below 40 degree Celsius. 

After 19-year development, we establish rigorous product quality system and provide well-established after-sales service. We offer more than 90 standard water chiller models and 120 water chiller models for customization. With cooling capacity ranging from 0.6KW to 30KW, our water chillers are applicable to cool different laser sources,laser processing machines, CNC machines, medical instruments, laboratory equipment and so on.

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/air-cooled-chiller-rmfl-1000-for-1kw-1-5kw-handheld-fiber-laser-welding-machine_p240.html

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 300 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 8 0,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

The market of handheld laser welding machine is expected to grow in the coming years

Laser welding application becomes very heated with fast growing rate

Back to 7 to 8 years ago, quite a few industrial experts believed that laser welding was a crucial growing point. With the development of high-end manufacturing, laser welding and precision welding are gradually used in different industries, including smart phones, computers, tablets, portable earphones, hardware, construction used metals and so on. And in the recent 3 years in particular, laser welding becomes quite heated because of increasing need of power battery used in electric vehicles. 

The wide application of laser cutting is the result of mature laser technology and increasing power and laser cutting is gradually replacing traditional processing methods like punch press, water jet and so on. It is a common and preliminary processing. Laser welding, however, is the result of new application of the laser technology. This often comes with upgrading and more complicated, customized technique with higher added value. With this trend, the market value of laser welding will overwhelm the one of laser cutting in the coming future. 

Handheld laser welding machine becomes a poplar welding device in the laser welding market

A new application and the diversity of the application will provide unpredictable potential for laser welding. How big is the laser welding market? For the time being, domestic laser welding market is thriving in all aspects. And there is one aspect that needs to mention -- the compact handheld laser welding machine becomes a popular welding device in the laser welding market. 

Handheld laser processing originally used for laser marking,then laser cleaning and now laser welding. Handheld laser welding machine is a portable high precision & flexible welding device and is easy to weld parts of different shapes and sizes. Since it features low cost, ease of use, compact size, low maintenance, handheld laser welding machine can meet the different needs of different companies. Nowadays, it is widely used in bathroom industry, hardware industry, construction industry, electronic industry and so on. 

Handheld laser welding machine is characterized by fast welding speed, which is 2-10 times faster than traditional laser welding machine. Therefore, the human labor can be reduced to a great extent. In addition, the finished weld is quite smooth and stable with no need of further polishing, which greatly reduces the cost and time. For metal plate, angle iron and stainless steel which has below 3mm width, handheld laser welding machine has particularly excellent welding performance. 

Traditional laser welding machine comes with mechanical arms, fixtures and automatic control. This whole set often costs more than 1 million RMB, which makes quite many laser users hesitate. But now handheld laser welding machine only costs about one hundred thousand RMB, which is quite affordable for most of the users. 

With handheld laser welding machine becomes more and more heated, many domestic manufacturers begin to invest in this technology, making the market become quite competitive. 

S&A Teyu developed RMFL series rack mount chillers to meet the need of handheld laser welding machine

Currently domestic handheld laser welding machine is generally between 200W and 2000W and often comes with a fiber laser. As we know, fiber laser will generate heat during operation, so it needs to be equipped with laser chiller unit to take away the heat. The stability of laser chiller unit affects the normal operation of the handheld laser welding machine. 

For the time being, S&A Teyu has the highest sales volume of industrial recirculating water chiller in domestic laser market. To meet the increasing demand of handheld laser welding machine, S&A Teyu developed the RMFL series rack mount water chillers RMFL-1000 and RMFL-2000 which is able to cool 1000W-2000W handheld laser welding machines. For more information of these two chillers, just click https://www.teyuchiller.com/fiber-laser-chillers_c2

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/fiber-laser-chillers_c2

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 300 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 8 0,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

Handheld laser welding machine - a novel approach in laser welding

Unlike traditional laser welding machine which is quite heavy and often comes with a platform, handheld laser welding machine has much smaller size and is characterized by superior flexibility and easy operation. Plus, it is more cost-effective than its big counterpart.

What are the advantages of handheld laser welding machine?

1.Welding
Handheld laser welding machine is a novel welding approach and specializes in welding high precision parts and thin-walled materials. It can realize spot welding, jam welding, stitch welding and seal welding with small & smooth weld seam, small heat-affecting zone, small distortion and fast welding speed. It doesn’t require complicated post-treatment, just needs some simple treatment. 

2.Cutting
Since handheld laser welding machine is often equipped with a laser of more than 1000W, it can perform some simple laser cutting as well with smooth cut edges. 

Application

1.Manufacturing industry
Manufacturing industry is an industry that many other industries rely on and it involves many different kinds of equipment and machines. The handheld laser welding machine we are taking about today is quite suitable in manufacturing industry. It can perform welding on different kinds of materials with fast welding speed, improving productivity and quality.

2.Metallurgic industry
Handheld laser welding machine can work on many kinds of metals with beautiful weld seam without sophisticated polishing. 

As mentioned before, handheld laser welding machine is often equipped with a laser source of more than 1000W and that laser source is often a fiber laser. To take away the heat from the fiber laser source, it is recommended to add an external cooling device.

S&A rack mount water chiller RMFL-1000 is specially designed for 1000W-1500W handheld laser welding machine. It has easy mobility and excellent flexibility with temperature stability of ±1℃. 

Find out more at https://www.teyuchiller.com/air-cooled-chiller-rmfl-1000-for-handheld-laser-welding-machine_p240.html

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/air-cooled-chiller-rmfl-1000-for-handheld-laser-welding-machine_p240.html

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 280 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 70,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

A Korean Client Will Integrate S&A Industrial Water Cooling System RMFL-1000 in His Handheld Laser Welding Machine in the Coming Laser Fair

Last week, a Korean handheld laser welding machine manufacturer left a message in our website, saying that he wanted to purchase several industrial water cooling systems that will cool the handheld laser welding machines in the coming laser fair. Since his booth in the fair is not big, those cooling systems are expected to be small and will be more terrific if they can be integrated into their welding machines. Well, we recently developed a new chiller model that is specially designed for cooling handheld laser welding machine - RMFL-1000.

S&A industrial water cooling system RMFL-1000 can be integrated into the handheld welding machine because of its compact design, which is great for the users who have limited space. It is the newly developed industrial water cooling system of S&A and it is equipped with water pump of high pump lift & pump flow and compressor of famous brands. In addition, industrial water cooling system RMFL-1000 has dual temperature control system applicable to cool the laser source and the welding head, which is very convenient. 

For more cases about S&A industrial water cooling system cooling handheld laser welding machine, click https://www.teyuchiller.com/chiller-application_nc6

Buy Water Chillers at Factory Price, Get Live Quotes Now! 

https://www.teyuchiller.com/standard-chillers_c3

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 16 years of development, the headquarter covers an area of 18,000 square meters, and has about 250 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 60,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.