Steam turbine accessories Manufacturers

How does precision machining technology ensure the dimensional accuracy and surface quality of Steam turbine accessories?

Precision machining technology ensures the dimensional accuracy and surface quality of Steam turbine accessories, mainly relying on strict control and optimization of the following aspects:
High-precision machine tools and equipment: high-precision CNC machine tools and machining centers are used. These equipment have extremely high positioning accuracy and repeated positioning accuracy, which can ensure dimensional stability during the machining process. Through advanced CNC systems, the motion trajectory and cutting parameters of the tool can be accurately controlled to achieve high-precision machining of accessories.
Advanced machining technology: During the machining process, scientific and reasonable process flows and machining methods are adopted. For example, ultra-precision cutting, grinding and lapping processes can effectively reduce machining errors and improve surface quality. At the same time, by optimizing cutting parameters such as tool angle, cutting speed, cutting depth and feed speed, the machining accuracy and surface finish can be further improved.
High-precision measurement and inspection: During and after the machining process, high-precision measuring tools and equipment are used to inspect the size and surface quality of accessories. These measuring tools include three-coordinate measuring machines, laser interferometers, etc., which can accurately measure the dimensional deviation and surface roughness of accessories to ensure that the accessories meet the design requirements.
Strict quality control system: Establish and implement a strict quality control system to monitor and manage every link in the processing process. Ensure their accuracy and stability by regularly calibrating machine tools and measuring equipment. At the same time, train and manage processing personnel to improve their skill level and quality awareness to ensure the stability and reliability of the processing process.
Precision processing technology ensures that the dimensional accuracy and surface quality of Steam turbine accessories meet the design requirements through the comprehensive effects of high-precision machine tools and equipment, advanced processing technology, high-precision measurement and testing, and strict quality control system.

How to ensure that the overall performance of Steam turbine accessories is not affected during welding and assembly?
During welding and assembly, a series of strict quality control measures need to be taken to ensure that the overall performance of Steam turbine accessories is not affected. Here are some key steps:
Select appropriate welding methods and materials: According to the material type, structural characteristics and working conditions of Steam turbine accessories, select appropriate welding methods (such as arc welding, tungsten inert gas welding, submerged arc welding, etc.) and welding materials. Ensure that the welded joint has sufficient strength and sealing to meet the requirements of turbine operation.
Strictly control welding parameters: During the welding process, strictly control parameters such as welding current, voltage, and welding speed to ensure stable and reliable welding quality. At the same time, monitor the welding environment to avoid adverse effects of external factors such as temperature and humidity on welding quality.
Perform pre-treatment and post-welding treatment before welding: Clean and remove rust on accessories before welding to ensure the quality of welded joints. After welding, perform necessary post-treatment such as heat treatment and stress relief annealing to eliminate welding stress and improve the organizational properties of welded joints.
Adopt reasonable assembly process: During the assembly process, according to the design drawings and process requirements, adopt reasonable assembly sequence and fixtures to ensure that the relative position and gap between accessories meet the design requirements. At the same time, key parts are inspected and measured to ensure assembly accuracy.
Strengthen quality inspection and monitoring: During the welding and assembly process, strengthen quality inspection and monitoring. Use non-destructive testing, dimensional measurement and other means to conduct a comprehensive inspection of welding joints and assembly parts to ensure that there are no defects such as cracks and slag inclusions. At the same time, record and analyze various parameters in the welding and assembly process to provide data support for quality control.
Carry out necessary tests and verifications: After welding and assembly are completed, carry out necessary tests and verifications. For example, pressure tests and air tightness tests are carried out to verify whether the performance of welding joints and assembly parts meets the design requirements. Through tests and verifications, potential quality problems can be discovered and dealt with in a timely manner.
By selecting appropriate welding methods and materials, strictly controlling welding parameters, carrying out pre- and post-welding treatments, adopting reasonable assembly processes, strengthening quality inspection and monitoring, and carrying out necessary tests and verifications, the overall performance of Steam turbine accessories during welding and assembly can be ensured to be unaffected.