How to Properly Restart a Laser Chiller After Long-Term Shutdown?

Do you know how to properly restart your laser chillers after a long-term shutdown? What checks should be performed after a long-term shutdown of your laser chillers? Here are some key tips summarized by TEYU S&A Chiller engineers for you:

1. Check the Operating Environment of the Chiller Machine

Check the laser chiller's operating environment for proper ventilation, suitable temperature, and no direct sunlight. Also, inspect for flammable or explosive materials in the vicinity to ensure safety.

2. Check the Power Supply System of the Chiller Machine

Before starting operations, ensure the main power supply for both the laser chiller and laser equipment is turned off. Check power supply lines for damage, ensure secure connections for power plugs and control signal lines, and verify reliable grounding.

3. Check the Water Cooling System of the Chiller Machine

(1)It is essential to check if the water pump/pipe of the chiller machine is frozen: Use a warm air device to blow the internal pipes of the chiller machine for at least 2 hours, confirming that the water system is not frozen. Short-circuit the chiller machine inlet and outlet pipes with a section of water pipe for a self-test, ensuring there is no ice in the external water pipes.

(2)Check the water level indicator; if residual water is found, drain it first. Then, fill the chiller with the specified amount of purified water/distilled water. Inspect the various water pipe connections, ensuring there are no signs of water leakage.

(3)If the local environment is below 0°C, proportionally add antifreeze to operate the laser chiller. After the weather warms up, replace it with pure water.

(4)Use an air gun to clean the chiller dustproof filter and the dust and impurities on the condenser surface.

(5)Ensure a secure connection between the laser chiller and the laser equipment interfaces. Turn on the chiller machine and check for any alarms. If alarms are detected, shut down the machine and address the alarm codes.

(6)If there is difficulty starting the water pump when the laser chiller is turned on, manually rotate the water pump motor impeller (please operate in the shutdown state).

(7)After starting the laser chiller and reaching the specified water temperature, the laser equipment can be operated (provided that the laser system is detected as normal).

*Reminder: If you have any questions or concerns about the above procedures for restarting the laser chiller, please feel free to contact our service team at service@teyuchiller.com. 

Source: https://www.teyuchiller.com/how-to-properly-restart-a-laser-chiller-after-long-term-shutdown

The Second Stop of 2024 TEYU S&A Global Exhibitions - APPPEXPO 2024

The Shanghai APPPEXPO 2024 is around the corner! Wondering about the water chiller lineup of TEYU Chiller Manufacturer at BOOTH 7.2-B1250 from Feb 28 to March 2? We will exhibit up to 10 water chiller models, and among them, the latest creation from our production line, CW-5302, will make its debut at this fair!

CW-3000: With a heat dissipating capacity of 50W/℃, small industrial chiller CW-3000 can exchange the heat in the equipment with environmental air. Easy operation, low energy consumption, mini design, and high reliability make this cooling system great for CNC spindles, acrylic CNC engraving machines, UVLED inkjet machines, small CO2 laser machines, etc. 

CW-5000: This industrial chiller features high-temperature stability of ±0.3℃ while with a cooling capacity of 750W (2559Btu/h). It is compatible with dual frequency power both 220V 50Hz and 220V 60Hz. Small industrial chiller CW-5000 is excellently suited for high-speed spindles, motorized spindles, CNC machines, grinding machines, CO2 laser marking/engraving/cutting machines, laser printers, etc.

CW-5200: Industrial Chiller CW-5200 features temperature stability of ±0.3°C with a cooling capacity of up to 1.43kW (4879Btu/h), dual frequency power 220V 50Hz/60Hz. 2 temperature control modes are equipped. The model is compact in structure, small in size, and easy to move. Industrial chiller CW-5200 stands out as one of the hot-selling water chiller units within the TEYU Chiller Manufacturer lineup, which is favored among many industrial processing professionals to cool their motorized spindle, CNC machine tool, CO2 laser, welder, printer, LED-UV, packing machine, vacuum sputter coaters, rotary evaporator, acrylic folding machine, etc.

CW-5302: This newly released industrial chiller is designed with a temperature stability of ±0.3℃ and dual cooling circuits. It is equipped with constant and intelligent temperature control mode, switchable as needed.

CWUP-20: Supports RS-485 communication for easy monitoring and remote control. It is equipped with multiple alarm functions such as high-temperature alarm, flow alarm, compressor over-current, etc. Reliably cools nanosecond, picosecond, and femtosecond ultrafast lasers, lab equipment, UV laser machines, etc.

In addition to the aforementioned models, we will showcase 5 more models: the industrial chillers CW-5202TH, CW-6000, CW-6100, CW-6200, and the UV laser chiller CWUL-05.

Should our chillers catch your interest, we invite you to join us at APPPEXPO 2024, held at the National Exhibition and Convention Center (Shanghai, China). Our team will be available to answer any inquiries and provide demonstrations, allowing you to gain a deeper understanding of our cooling solutions.

Source: https://www.teyuchiller.com/the-second-stop-of-2024-teyu-global-exhibitions-apppexpo

Blue Laser Welding: a Weapon for Achieving High-Precision, Efficient Welding

 In the field of laser welding, blue laser welding machines are gradually gaining prominence. Their advantages, such as reducing heat effects, high precision, and fast welding, make them stand out in various industrial applications. Let's explore the advantages of blue laser welding:

Advantages of Blue Laser Welding Machines

1. Reduced heat effects: The wavelength of blue laser welding is 455nm, significantly reducing heat effects during the welding process. This lowers material deformation and enhances welding precision.

2. High-precision welding: Due to minimal heat effects, blue laser welding can achieve high-precision welding, especially suitable for situations requiring high accuracy.

3. Fast welding: Blue laser welding does not produce heat effects, allowing for quick completion of welding tasks and increased production efficiency.

4. Pore-free weld seams: blue laser welding can generate high-quality weld seams without splashing or pores, exhibiting higher mechanical strength and lower electrical resistance.

5. Heat conduction welding mode: blue laser welding also features a unique heat conduction welding mode, which is unattainable with near-infrared lasers, bringing greater flexibility to certain specific industrial processes.

The Crucial Role of Laser Chiller in Blue Laser Welding Machines

The laser chiller plays a vital role in blue laser welding machines. During prolonged continuous operation, the accumulation of heat in the blue laser welding machine may lead to a rise in machine temperature, affecting the normal operation and lifespan of the equipment. The laser chiller, through intelligent temperature control, provides efficient and stable heat dissipation for the blue laser welding machine, ensuring the stable operation of the laser welding equipment. Additionally, laser chillers can maintain the optimal working condition of the laser welding machine, enhancing overall operational efficiency.

TEYU Laser Welding Chiller: A Flexible and Efficient Combination

TEYU Laser Chiller Manufacturer offers stand-alone water chillers, rack-mounted water chillers, and all-in-one chiller machines for blue laser welding machines. The unique dual cooling circuits of TEYU Blue Laser Chillers make them simultaneously and independently cool the laser and optical components, while with intelligent control and efficient stable cooling. These laser chillers can be applied in various laser welding scenarios, making laser welding more flexible and convenient, significantly improving the efficiency, quality, and lifespan of the welding.

In conclusion, the advantages of blue laser welding machines, such as reduced heat effects, high precision, and fast welding, combined with the temperature control function of water chillers, give them a significant edge in various industry applications. TEYU laser welding chillers, with flexible and convenient product features, contribute to the application of blue laser welding machines.

Source: https://www.teyuchiller.com/blue-laser-welding-to-achieve-high-precision-and-efficient-welding