JB/T 5278.3-1991 Copper wire seal bakeable vacuum flange copper wire

This standard specifies the structural dimensions and technical requirements of copper wire seals. This standard applies to the vacuum flange connection type specified in JB5278.1. JB/T 5278.3-1991 Copper wire seal bakeable vacuum flange copper wire JB/T5278.3-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Copper wire sealed bakeable vacuum flange
Copper wire sealing ring structure dimensions
Subject content and scope of application
This standard specifies the structure dimensions and technical requirements of copper wire sealing rings. This standard applies to the vacuum flange connection type specified in JB5278.1. Reference standards
GB3109
GB3119
Oxygen-free copper wire
Nominal diameter of vacuum flange
Copper wire sealed bakeable vacuum flange
Copper wire sealing ring structure and dimensions
Connection type
The structure and dimensions of copper wire sealing rings are specified in the following figure and table. 42Www.bzxZ.net
Nominal diameter Dw
4 Technical requirements
4.1 The nominal diameter of copper wire sealing rings shall comply with the provisions of GB6070.1. 500
JB5278.3--91
4.2 The surface of the copper wire sealing ring should be smooth, and no scratches, spots or other defects that affect the sealing performance are allowed. The welding parts should be dense, uniform in diameter and rounded in surface.
4.3 The copper wire sealing ring should be made of T2 copper wire specified in GB3109 or TU, oxygen-free copper wire specified in GB3119. Approved by the Ministry of Machinery and Electronics Industry on January 1, 19916
Implementation on July 1, 1991
Additional notes:
5278.3—91
This standard was proposed and managed by the National Technical Committee for Vacuum Technology Standardization. This standard was drafted by the State-owned Nanguang Machinery Factory. The main drafter of this standard was Feng Huisheng
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