This standard applies to medium flat rectangular waveguide flanges. It is part of a complete set of waveguide flange standards and should be used in conjunction with GB 11449.1 "Waveguide flanges Part 1: General requirements". GB/T 11449.5-1989 Waveguide flanges Part 6: Medium flat rectangular waveguide flanges specification GB/T11449.5-1989 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Waveguide flanges
Part 6: Relevant specification for flangesfor medium flat rectangular waveguidesCB 11449. 589
This standard applies to medium fan rectangular waveguide flanges. It is part of the complete set of waveguide flange standards and should be used in conjunction with GB 11449.1 Waveguide flanges Part 1: General requirements. 1 General
1.1 Flange types
The types of medium fan rectangular waveguide flanges included in this standard are listed in Tables 1-2 and Figures 1-5. 1.2 Flange type nomenclature
The model number of the flange is composed as follows:
The first letter \F\ indicates the waveguide flange, and the second letter indicates the type of flange. Flanges with the same letter and the same waveguide size can be matched. b.
The second letter indicates the structural characteristics of the flange: C
M——The flange has a sealing groove but no flow groove; P flange has no sealing groove and flow rejection groove.
The number indicates the waveguide code that matches the flange. d.
Marking example:
Flange FLP 40 GB 11449:
Indicates an L-shaped flange without a sealing groove, and the matching medium flat rectangular waveguide is BZ40. 2 Mechanical requirements
2.1 Dimensions
2.1.1 Positioning holes
The positioning holes should be clearly indicated in the drawings and should be drilled closely. The positioning holes should be as close to the narrow side of the waveguide as possible. The connection holes can adopt a lower position accuracy than the positioning holes. However, the diameter of the holes should be appropriately enlarged to ensure the connection of the flange. 2.1.2 Positioning bolts, screw diameter
The basic value of the screw diameter and its deviation are listed in Tables 1~2. 2.1.3 Relationship between the screw and the positioning hole diameter To ensure the connection of the two flanges, each single flange should be specified;. The position of the hole, the basic size of the hole diameter and its deviation b. The basic size of the connecting bolt and screw diameter with appropriate matching. The recommended matching types of positioning holes and screws are listed in Tables 1~~2. Approved by the Ministry of Electronics Industry of the People's Republic of China on March 4, 1989 and implemented on March 1, 1990
GB11449.5--89
When required by telecommunications, the position tolerance value of the hole can be reduced, but the matching tolerance of the hole should be changed. 2.1.4 Overall dimensions and thickness of the flange
The overall dimensions and thickness of the flange are listed in Tables 1~2 respectively. The values ​​given are based on brass as the material. If other materials are used, other more suitable information should be used.
2.1.5 Surface roughness of flange contact surface The surface roughness R of flange contact surface shall not exceed 1.6μm. 2.1.6 Flatness of contact surface
The flatness of contact surface shall not exceed the values ​​given in the following table: Guide size range
BZ 14~BZ 26
EZ 32-~JIZ.100
2.1.7 Perpendicularity of axis
The perpendicularity between the axis of the hole and the contact surface of the flange is 90±1/4". 2.2 General requirements for assembled flanges
2.2.1 Positioning of holes
The positioning of holes shall be based on the theoretical symmetry line of the inner cross section of the waveguide. 2.2. 2 Verticality of contact surface
The verticality of the contact surface of the wire coil relative to the axis of the waveguide should be 90±1/4°. 2.3 Additional requirements for unassembled flanges 2.3.1 Assembly type
Requirements (mm)
The figures in this standard show an assembled flange, and the installation type of the flange and the conductor is given as an example, but this does not exclude other installation types.
2. 3. 2 Aperture shape
The size of the part of the flange that fits the waveguide should be the same as the basic external size of the waveguide in the relevant specifications of the medium fan rectangular waveguide in GB11450.5. The deviation of the aperture size depends on all materials and assembly methods, so it should be negotiated and determined by the supply and demand parties according to needs. 2.3.3 Positioning of holes
For pre-drilled flanges, the positioning of the holes should be based on the theoretical symmetry line of the flange diameter. 2.3.4 Ordering instructions
When ordering unmounted flanges, a certain processing allowance should be left for some dimensions that need to be processed after assembly. L-type flange
How high (positioning hole)
CB 11449.5-89
8-A (continuous hole)
L-type flange
GB 71449. 5—89
4. By (positioning hole) 5-(continuous hole)
L-type flange
4-5A (positioning hole)
G 11449. 5—89
FLP40-~100
4-A (continuous hole)
N-type flange
GB 11449.5—89
FN.14~-40
2-A (positioning) sequence-A (continuous hole)?lu-w?
FNPI~40
FNMr4~40
N plastic flange
CB 11449.5-89
2 Positioning 4 True (Select
$z@u@-O
FNP 48-TD
FNM48-70
Flange Model
Flange Age Model
Matching
Guide Model
GB11449.5—89
Hole Size
+0. 280:+ 0. 316/ A 15
Table 1 Medium Fan Rectangular Waveguide
Connection Hole
+0.280 + 0. 860
+0, 316A 15
+0. 280+ 0. 860
+0.170B15
±0.170B 15
+0. 140+0. 170B 15
+0.140/ +0. 170 B 15
+0.140]+0.620
195. 58 |48. 90
165. 1041. 30
+0. 140 +0. 620
109.2227.30
+ 0.140+0. 620
86.3621.600
+0.140+0.62072.13618.000
+0. 070|+0. 100C 15
+0. 070|+0. 550] 58. 1664. 500+0.070+0.100C15
+0. 070 +0. 100
+0, 070+0. 100C 15
+ 0. 070] +0. 100|C 15
+0. 070 +0. 550 47. 549 11. 900+0.070+0.550
40.38610.100
+0, 070-1-0. 550
34.8498. 700
+0. 070 +0. 550 22. 8605. 000L Type flange size
55.30236.0
169.1645.36200.0
133. 6036. 46|155. 0
31.36135.0
90. 4225, 66112.0
97.945.08.0
1 80.242.06. 0
38. 06. 0
GB 11449.589
Location screw selection size
Screw matching
Diameter symbol
44. 0 132. 00220. 00 44. 00 75. 000.20
100.0085.oq36.00
61.000.20
73. 00 146. 00 29. 0051. 00
63. 00 126. 00 25. 00 46. 0052.0o103.0021.0040.00
45. 00 88. 64|17. 02|36. 00
28. 00|72. 2420. 62|34. 00 | 0217. 4224. 00
11. 94 35. 8211. 42
.0.0180
Flange model
Flange model
Matching
Guided model
GE 11449. 5—89
Hole size
Diameter matching
Table 2 For medium fan rectangular waveguide
48. 000|A 9[ + 0. 280 +0, 316A 15 +0. 280 +0. 860165. 1041. 30 169. 16-0.15010.730129.5432.40133.6048.000/B 9/-0.150+ 0.186B 154[6, 350B 9+0. 150 +0. 186B 15-+0. 150/+0. 730 109. 22 27. 30 113. 28+0.186B15
+0, 150 +0, 730 86. 3621. 600 90. 4246.350B9+0.150+0.186B15
+0. 150 +0. 730 72, 13618. 000 76. 206. 350/R 9+0. 150 +0. 186B 15+0.150+0.73058.16614.500 61.425 6. 350c 9 +0. 080 + 0. 116k 15 + 0. 080 1 0. 660 47. 54911. 900 50. 8U5
[6. 350|c 9[+0. 080
+9. 116k 15 +0. 080+0. 660 40. 38610. 10043. 645,000c 9+0.070+0.10015+0.070+0.55034.8498.70038.10N flange size
45.36220.7
96. 9 12. 00. 51. 0
36.46185.0
31. 36161. 1
22.06114.3
17.7598,4
87. 6 12. d n. 5 1. 0
79.112.90.51.0
73.712.00. 51.0
GB 11449.5-89
$ZR+MLIMM
Positioning gingival size
Screw fitting
Diameter symbol
17.35. 918. 009
8 3. 65120. 60200. 00 76. 13 0. 10 58. 3182, 13.63100.08165.0067.710.1049.9147.32.35.98.000he
3.6590.78141.9860.07.1043.12 5.77.35.96.350h88
38.1102.97.35.96.350h8
3.6568.28119.0654.620.10
6 2. 4d65. 0897. 2243. 10b. 19 30. 184.24.83.96.350h8
60.710. 0 0, 51. 0
55.310. Q0. 50.8
6 2. 40 54. 3682. 30 38. 76 b. 1d 25.653.310.00.50.862.4028.5871.8236.190.0523.115.1588.9
11.9568.3
4.B3. 96,350
58.74.83.96.350h8
51.54.83.96.3508
51.810.00.50.86 2.4025: 4064.6634.370. 05 21.242.110.00.50.84.8022.2255.5829.420.0518.7*Reference size
Additional note:
This standard was drafted by the 14th Institute of the Ministry of Electronics.
3. 63, 95. 000h8
0,0220
—0. 022
—0,0225-89
$ZR+MLIMM
Positioning Gum Size
Screw Fit
Diameter Symbol
17.35. 918. 009
8 3. 65120. 60200. 00 76. 13 0. 10 58. 3182, 13.63100.08165.0067.710.1049.9147.32.35.98.000he
3.6590.78141.9860.07.1043.12 5.77.35.96.350h88
38.1102.97.35.96.350h8
3.6568.28119.0654.620.10
6 2. 4d65. 0897. 2243. 10b. 19 30. 184.24.83.96.350h8
60.710. 0 0, 51. 0
55.310. Q0. 50.8
6 2. 40 54. 3682. 30 38. 76 b. 1d 25.653.310.00.50.862.4028.5871.8236.190.0523.115.1588.9
11.9568.3
4.B3. 96,350wwW.bzxz.Net
58.74.83.96.350h8
51.54.83.96.3508
51.810.00.50.86 2.4025: 4064.6634.370. 05 21.242.110.00.50.84.8022.2255.5829.420.0518.7*Reference size
Additional note:
This standard was drafted by the 14th Institute of the Ministry of Electronics.
3. 63, 95. 000h8
0,0220
—0. 022
—0,0225-89
$ZR+MLIMM
Positioning Gum Size
Screw Fit
Diameter Symbol
17.35. 918. 009
8 3. 65120. 60200. 00 76. 13 0. 10 58. 3182, 13.63100.08165.0067.710.1049.9147.32.35.98.000he
3.6590.78141.9860.07.1043.12 5.77.35.96.350h88
38.1102.97.35.96.350h8
3.6568.28119.0654.620.10
6 2. 4d65. 0897. 2243. 10b. 19 30. 184.24.83.96.350h8
60.710. 0 0, 51. 0
55.310. Q0. 50.8
6 2. 40 54. 3682. 30 38. 76 b. 1d 25.653.310.00.50.862.4028.5871.8236.190.0523.115.1588.9
11.9568.3
4.B3. 96,350
58.74.83.96.350h8
51.54.83.96.3508
51.810.00.50.86 2.4025: 4064.6634.370. 05 21.242.110.00.50.84.8022.2255.5829.420.0518.7*Reference size
Additional note:
This standard was drafted by the 14th Institute of the Ministry of Electronics.
3. 63, 95. 000h8
0,0220
—0. 022
—0,022
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