What is the manufacturing process flow of vacuum bellows?

The manufacturing process of vacuum bellows is a complex and delicate process,mainly including the following key steps:
Raw material selection and preparation:Firstly,select suitable metal materials(such as stainless steel,copper,aluminum,etc.)or ceramic materials(such as aluminum oxide,silicon nitride,etc.)according to product requirements.These materials need to have good corrosion resistance,strength,and toughness to ensure the performance of vacuum bellows.Subsequently,the selected material is cut into appropriate lengths and subjected to preliminary processing,such as removing burrs,uneven surfaces,etc.
Tube making:Making the processed material into a tube shape is one of the key steps in the production of vacuum corrugated tubes.During the pipe making process,it is necessary to ensure the straightness,wall thickness uniformity,and surface quality of the pipe body to meet the requirements of subsequent processing.
Ripple formation:A ripple structure is processed on the surface of the tube,which is a unique structural feature of vacuum bellows.The formation of ripples is usually achieved through cold rolling process,where the pipe body is placed on a specialized cold rolling machine and bent and pressed to form the desired ripple shape.The shape and quantity of ripples have a significant impact on the performance of corrugated pipes.
Welding and sealing:In order to ensure the sealing and stability of the vacuum corrugated pipe,it is necessary to weld various parts.Welding techniques include argon arc welding,electron beam welding,etc.,which can ensure the quality and sealing of welded joints.After welding is completed,sealing treatment is usually carried out using techniques such as brazing and high-temperature fusion sealing to ensure the formation of a vacuum environment inside the corrugated pipe.
Vacuum extraction:Use mechanical pumps,ion pumps,and other vacuum extraction equipment to extract the air inside the corrugated tube,forming the required vacuum degree.The formation of vacuum degree is crucial for the performance and application scenarios of corrugated pipes.
Quality inspection and evaluation:Finally,strict quality inspection and evaluation are carried out on the produced vacuum corrugated pipes.The testing content includes appearance quality,dimensional accuracy,vacuum degree,pressure resistance performance,etc.,to ensure that the product meets relevant standards and customer requirements.
In summary,the manufacturing process of vacuum corrugated pipes includes key steps such as raw material selection and preparation,pipe making,corrugated formation,welding and sealing,vacuum extraction,and quality inspection and evaluation.Each step requires strict control of process parameters and quality standards to ensure the performance and quality of the final product.