3D Printing Technology First Used in Daya Bay Nuclear Power Station

Recently, China General Nuclear Power Nuclear Power Co., Ltd. announced that its scientific research project "3D printing technology in the nuclear power plant spare parts and parts manufacturing and repair process key technology research" made a breakthrough progress, the project team selected fused additive technology R & D and manufacturing of refrigerators The end cap successfully completed the installation of the equipment in the Daya Bay Nuclear Power Station compressed air production system and was re-qualified through the operation of the equipment.
According to reports, the metal 3D printing chiller cover was successfully installed and safely put into operation at Daya Bay Nuclear Power Station. It successfully solved the problem that the chiller cover of the system was modified by foreign manufacturers and the spare parts could not be supplied. It was a 3D printing technology in nuclear power. The first demonstration application of engineering practice in the field indicates that 3D printing technology has achieved a major leap from theoretical research, technical analysis, and engineering practice in the field of nuclear power.
It is worth noting that CGN's successful 3D printing technology is inseparable from the listed company Nanfeng. In December 2017, Nanfeng announced that the company had signed the "China-Gangsu Nuclear Power Plant Additive Manufacturing Technology and Product Cooperation R&D Cooperation Agreement" with China Guangdong Nuclear Power Operating Company.
In accordance with this "Agreement," CGNPC's operating companies provide the technical requirements and original design data for nuclear power plant demand products, provide product technical specifications or development mission statements, and provide necessary technical support in the process of additive technology and product development. Nanfeng Joint Subsidiary Southern Additives is responsible for the completion of product design and manufacturing process determination, as well as product manufacturing, inspection, testing, appraisal, etc., and organizes the preparation of relevant technical documents. CGNPC's operating companies conduct necessary supervision and inspection.
Nanfeng Co., Ltd. believes that through the cooperation with China Guangdong Nuclear Power Operating Company, it will accelerate the pace of industrialization in the nuclear power industry by promoting the use of precision metal forming technology for heavy metal components (namely, heavy metal 3D printing technology and additive manufacturing technology). The development of heavy metal component molding and manufacturing has important strategic significance. Up to now, Southern Additive has completed the R&D and production of the spare parts additive for the heat exchanger cover of the SAP chiller in the nuclear power plant, and has already delivered the company to the China Guangdong Nuclear Power Operating Company.
(Wang Feng)

2023 New Hot Sale Fiber Laser Cutting Machine A Series

The imported helical gear design of the reducer can withstand greater torque than the general straight tooth output.
High precision, small product volume, low noise, fully enclosed design, to ensure that the lubricating grease does not leak, and the transmission efficiency is as high as 95%.
The internal components are made of alloy steel, which can cope with various harsh environments.
Laser head structure
1.The Z axis refers to the direction in which the laser head moves up and down
2.Structural composition: 1. Servo motor; 2. Guide rail slider; 3. Mounting seat; 4. Laser head, etc.
3.Structure introduction: It can adapt to different specifications of pipes by adjusting the up and down movement of the laser head.

4.Structural advantages: the mechanism is simple, stable and easy to operate.

The Z-axis can be both follow-up and numerically controlled: in order to solve the problem that the laser focus fluctuates due to the uneven surface of the pipe, which affects the cutting quality, the cutting head (Z-axis) must follow to keep the focus constant. In addition to the follow-up function, the Z axis of the cutting machine also has the same display and control functions as the X and Y axis.

Graphic display: The machine has the functions of analog graphic display and dynamic graphic tracking display for the edited part program, which makes the processing more intuitive and easy to monitor and control.

Multiple alarm functions: The CNC system of the machine has the functions of self-checking, alarming and automatic protection, and also has alarm display and automatic protection for external conditions.

CNC control system: The system adopts an integrated structure, central control and display operation unit structure. The system is based on windows CNC system. The display operation unit provides a good man-machine interface and displays various operation information. The operation panel has function keys for machine tool operation.

Low-voltage electrical system: The low-voltage electrical system is located in the electric control cabinet, which is the interface part of the electrical control of the whole machine. The power supply, relays, circuit breakers, contactors, and servo drive systems required by the electrical control system are installed in the electric control cabinet.

Using high-quality stainless steel cold water circulating pump, large flow, high lift, low noise, long life; stainless steel water tank, pipeline, stainless steel valve will never worry about rust.

The control system adopts LCD full Chinese (or full English) computer controller, CPU automatic control, simple and intuitive operation. The control accuracy is as high as ±0.1℃; it has the function of automatic fault diagnosis, which directly displays the fault point on the screen, prompting the user to deal with it quickly. And the fault signal can be directly transmitted to the CNC numerical control system through the data line to avoid damage to components and equipment.

Provides multiple protection functions, passive alarm terminals, and remote control terminals, which are easy to realize centralized control and monitoring of CNC; among them, the "dual temperature type" precision water cooler provides stable and accurate water temperature control for the laser, and also provides a channel with The water temperature similar to the ambient temperature is used for lens cooling, which solves the problem of damage to the lens caused by condensation when cooled with low-temperature water, and is the best choice for cooling the entire laser equipment.


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