GB/T 8893-1988 Rectangular and square copper and copper alloy waveguides
Some standard content:
National Standard of the People's Republic of China
Rectangular
and square waveguid tube
UDC 669.3
:669.35-462
GB 8893 --- 88
This standard applies to rectangular, flat rectangular and square copper and copper alloy waveguid tubes used in the manufacture of radio equipment and telecommunication equipment in the electronics and telecommunication industries.
Basic dimensions… The inner hole size and outer edge size that determine the cross-sectional shape of the tube. Wall thickness: half of the difference between the outer edge size and the inner hole size is the nominal wall thickness. 1.2
Eccentricity: half of the difference between the maximum wall thickness and the minimum wall thickness of the same cross section of the tube. 1.3
1.4 Curvature - the maximum deviation between the straight line connecting two points on the actual axis of the pipe at a specified length and the actual axis. Curvature is measured on the outer surface of the pipe.
1.5 Twist - the angle at which the cross section of the pipe is twisted around the longitudinal axis at a specified length. 1.6 Rectangularity ~
- the angle at which two adjacent walls are perpendicular to each other.
2 Varieties
2.1 Brand, state
The brand and state of the product shall comply with the provisions of Table 1. Table!
2.2 Appearance, size and allowable deviation
2.2.1 According to the inner hole size of the waveguide (see figure), the classification is as follows: China Nonferrous Metals Industry Corporation 1988-02-12 approved supply status
Hard (Y)
198902-01 implementation
Rectangular waveguide: a/h=2;
Medium flat rectangular waveguide: α/h-4;
Flat rectangular waveguide: a/b8;
Square waveguide: a/l.
GB 8893
The size of the pipe and its allowable deviation shall comply with the provisions of Table 2, Table 3, Table 4 and Table 5. Table 2
Rectangular waveguide
, size
Basic size
R1005. 6902.845
R3207.1123.556
Allowable deviation
±0.020±0. 03
R2608.6364.318±0.020
R220 10. 674.318±0.021
12.956. 477
15.807.8990.031
R12019.059.525
R10022.8610.16+0.046
28. 5012. 62
34. 85|15. 80|±0. 070
R5810.3920,19
R4847.5522.15
58. 17|29. 08
72.1434.04
86.3643.18
R22 109.2254.61
129.5464.77
165. 10 82. 55
58.0025.00
Note: ※ indicates a newly added specification.
Basic size
Outer edge size
Allowable deviation
31, 75115. 88
2.03090.42
113. 2858. 67
169. 16 86. 61
±0.100.5
±0. 10 0. 5
± 0.2010.8
±0.281. 0
±0. 341. 0
±0. 441. 0
Basic size
Allowable deviation
M10022.865.000±0.023
28.50|5.000±0.028
134.858.700±0.035
40. 3910.10
M4847.5511.90±0.048
58.1714.50
M3272.1418.00
86.3621.60
109.2227.30±0.11
M18129.5432.40±0.13
M14 165.10 41.30±0.17
GB 8893
Inner hole size
Basic size
Allowable deviation
34.855.000±0.035
40.395.000±0.04
Medium flat rectangular waveguide
Basic size
±0. 34 1. 2
±0. 06 ±0. 08
47.555.700±0.048
58.177.000±0. 058
72. 148. 600±0. 072
86.3610.10|±0.086
t09.2213.10
58. 00/10. 00
Note: ※ indicates a newly added specification.
Allowable deviation
+0. 10 0. 65/1. 15
169. 1645. 36
Flat rectangular waveguide
Basic size
±.0. 181 0. 8 A
+0.240.81.3
+0.6011.0
Allowable deviation
± 0. 070
±0. 100.8
8. 90±0. 095
113. 28 | 17. 16
Model basic size
Q11517.00
Inner hole size
Allowable deviation
± 0. 031
GB 8893 88
Square waveguide
+0. 060. 4
Q7026.00±0.052±0.08
±0. 072±0. 11
±0.080±0.12
Note: ※ indicates a newly added specification.
Basic size
Note: (1) Tubes with other specifications and allowable deviations can be supplied through negotiation between the supply and demand parties. Grade 1
Outer edge size
Allowable deviation
±0.10!
±0.052±0.08
± 0. 10 + 0. 14
±0. 080±0. 12
±0.15±0.20
(②) The accuracy of the allowable deviation of the size must be indicated in the order contract. Otherwise, it will be supplied according to the accuracy of Class II. 2.2.3 The length of pipe supply is divided into three types: fixed length, multiple length and irregular length. 1.0
2.2.3.1 The irregular length is 1~~3.5m. Each batch can deliver short pipes with a weight not exceeding 15% and a length not less than 0.5m. 2.2.3.2 The fixed length or multiple length should be within the range of irregular length, and the allowable deviation of the fixed length or multiple length is +15mm; the multiple length should include the segmented sawing allowance, and each sawing allowance is 5mm. Note: The length of the pipe should be specified in the contract. The end of the pipe should be sawn flat, but slight burrs are allowed. The cut should not exceed the allowable deviation of the pipe length. 2.2.4
The bevel should not be greater than 3mm.
2.2.5 The pipe should be straight, and its curvature and twist should not exceed the requirements of Table 6. 6
Inner width of pipe a
GB 8893-88
Table 6 Maximum allowable values of curvature and twist of rectangular (square) pipes Curvature per meter of pipe length
Grade I, II
Twist of pipe cross section at specified length, Grade I
2°/285
2°/355
2°/533
0.5°/228
0.5°/285
0.5°/348
0.5°/581
0.5°/863
0. 5/1 000
0.5°/1000
0. 5%/1 000
0.5°/195
degree/mm
, Sichuan grade
3°/285
3°/533
1 °/129
1\/190
18/403
1°/475|| tt||1°/581
1/1000
1/1000
1/1000
1P/170
1°/230|| tt||inner width of pipe
bend per meter of pipe length
, Ir grade
GB 8893—88
Continued Table 6
Twist degree of pipe cross section at specified length, [Grade
0.5°/400
0.5°/500|| tt||2.2.6 The squareness of the pipe is α = 90° ± 0.5°. Note: After negotiation between the supplier and the buyer, pipes with a squareness α of 90° ± 0.25° or higher precision can be supplied. 2.2.7 The eccentricity of the pipe should not be greater than 10% of the nominal wall thickness. 2.3 Marking example
degree/mm
I, level
1°/260
1°/280
1°/300||tt| |1°/320
1°/360
1°/400
Made of H62, inner section size is 22.86mm×10.16mm, outer section size is 25.4mm× 1 The 2.7mm drawn hard waveguide is marked as:
Waveguide H62Y22.86X10.16GB8893--883 Technical requirements
Chemical composition
The chemical composition of the pipe should comply with GB523185 "Additive I. Copper Chemical Composition and Product Shape" T2 and TU1, GB5232-85 "Processing Brass Chemical Composition and Product Shape" H62 and H96. 3.2 Annealing
Tubes made of H62 should be cleared Internal stress annealing. 3.3 Surface quality
3.3.1 The inner surface of the pipe should be smooth and clean, without defects such as cracks, burrs, peeling, pores, pits, scratches and car jumping marks. Longitudinal tensile marks, surface roughness caused by drawing, oxidation color, redness, etc. are not grounds for scrapping. When the inner width of the pipe is greater than 100mm, the inner surface roughness (Ra) should not be greater than 1.6μm; the inner surface roughness (Ra) of the pipe with an inner width of not more than 100mm should not be greater than 0.8μm. Roughness (Ra) of 0.4μm. Note: The supplier may not conduct internal surface roughness inspection, but must ensure that. 3.3.2 The outer surface of the pipe should not have cracks or peeling, and it is not allowed to have any damage caused by inspection and repair. The outer cross section has defects such as folds, bubbles, scratches, pits, bumps and pressed objects that are beyond the tolerance. Drawing marks, oxidation color and reddening are not used as the basis for scrapping. 518
4 Test method||tt ||4.1 Chemical composition arbitration analysis method
GB8893
The chemical composition arbitration analysis method of pipes, T2, TU1 shall be carried out in accordance with the provisions of GB5121-85 "Chemical Analysis Method for Copper". 1162, H96 shall be measured in accordance with the provisions of GB5122-85 "Chemical analysis method for yellow steel". 4.2 Dimension measurement method
4.2.1 Use a scale, steel tape measure or other measuring tools that can ensure measurement accuracy to measure the pipe size. Use an optical projector to measure the angle.
Note: The supplier may not measure the Y-angle, but must ensure that 4.2.2 Bend measurement method:
Put the pipe parallel to the platform and use a 1㎡ long Place the steel ruler against the concave surface of the pipe to be measured, and use a feeler gauge or other measuring tool to measure the maximum distance between the pipe and the steel ruler.
4.2.3 Twist and hold measurement method: ||tt ||Place the pipe of specified length on the platform with the wide side in contact with the flat plate, press one end, and place a transparent protractor close to the other end to measure the degree of torsion of the cross section around the longitudinal axis.
4.2.4 Rectangular (square) shape measurement method:
Use an optical projector to measure the α angle.
Note: The supplier may not measure, but must ensure it. 4.3 Surface quality 4.3.1 The outer surface of each pipe should be inspected by force. 4.3.2 The inner surface of each pipe should be inspected by force against a fluorescent lamp. 4.3.3 The surface roughness can be inspected by using a standard block. The Ra value can be measured by the comparison method or by using a stylus profilometer, but the measurement should span the entire wide and narrow sides of the waveguide, and the rounded corners are not included in the measurement range. 5 Inspection Rules
5.1 Inspection 5.1.1 The pipes shall be inspected and accepted by the supplier's technical supervision department, and the product quality shall be guaranteed to meet the requirements of this standard. 5.1.2 The purchaser shall re-test the products received. If the re-test results do not comply with the requirements of this standard, the purchaser shall report the matter to the supplier within three months from the date of receipt of the products, and the two parties shall resolve the issue through negotiation. Batch
Pipes should be submitted for inspection in batches. Each batch of pipes should be of the same brand, state and specification. 5.3 Inspection Items
Each batch of pipes should be inspected for chemical composition, external dimensions and surface quality. 5.4 Sampling location and sampling quantity
5.4.1 Sampling of chemical composition:
5.4.1.1 During the process of melting and casting pipe ingots, the supplier shall take one sample from each furnace for chemical composition inspection. 5.4.1.2 The purchaser shall randomly select one sample from each batch of pipes for chemical composition test. 5.4.2 The external dimensions and surface quality of each pipe shall be measured and tested. 5.5 Repeated test
For chemical composition analysis, even if one sample fails the test, double the sample should be taken from the batch to retest the failed item. If one sample fails to meet the standard, the whole batch shall be scrapped. 519
6 Marking, packaging, transportation, purchase and storage
6.1 Marking
GB 8893--88
The packaging and marking of pipes should comply with the relevant marking provisions in GB8888-88 "Packaging, marking, transportation and storage of heavy non-ferrous metal processing products".
6.2 Packaging
Pipes should be wrapped along the length of the pipes in single or multiple pieces according to the specifications. Both ends of the pipes should be sealed with soft paper. Put the pipes in order according to their length into an iron (iron non-iron) packaging box of the same size covered with rust-proof paper or wax paper. Do not move them. Fill the gaps with paper scraps without words. The net weight of each box should not exceed 1000kg. 6.3 Transportation and storage
During transportation and storage, the products should be protected from collision, moisture, wetting and corrosion by active chemical substances. The metal processing factory is responsible for drafting. The main drafters of this standard are Tan Zhongcheng and Zhang Chunxuan. 5303.2 Annealing treatment
Pipes made of H62 should be annealed to remove internal stress. 3.3 Surface quality
3.3.1 The inner surface of the pipe should be smooth and clean, and should not have defects such as cracks, burrs, peeling, pores, pits, scratches and car jumping marks. However, longitudinal tensile marks, surface pitting caused by drawing, oxidation color, redness, etc. are not used as scrapping basis. When the inner width of the pipe is greater than 100mm, the inner surface roughness (Ra) should not be greater than 1.6μm; the inner surface roughness (Ra) of the pipe with an inner width of not more than 100mm should not be greater than 0.8μm. By agreement between the two parties, pipes with an inner surface roughness (Ra) of 0.4μm can be supplied. Note: The supplier may not conduct the internal surface roughness inspection, but it must be guaranteed. 3.3.2 The outer surface of the pipe should not have cracks or peeling, and defects such as folds, bubbles, scratches, pits, bumps and pressed objects that cause the outer cross-section to exceed the tolerance after inspection and repair are not allowed. Drawing marks, oxidation color and reddening are not used as the basis for scrapping. 518
4 Test method
4.1 Chemical composition arbitration analysis method
GB8893
The chemical composition arbitration analysis method of pipes, T2 and TU1 shall be carried out in accordance with the provisions of GB5121-85 "Chemical Analysis Method for Copper". 1162 and H96 shall be carried out in accordance with the provisions of GB5122-85 "Chemical Analysis Method for Yellow Steel" 4.2 Dimension measurement method
4.2.1 Use a sub-ruler, steel tape measure or other measuring tools that can ensure measurement accuracy to measure the size of the pipe. Use an optical projector to measure the angle.
Note: The supplier may not measure the Y-angle, but must ensure that 4.2.2 Bend measurement method:
Put the pipe parallel to the platform, use a 1㎡ long steel ruler to lean against the concave side of the measured pipe, and use a feeler gauge or other measuring tool to measure the maximum distance between the pipe and the steel ruler.
4.2.3 Twist measurement method:
Put the pipe of specified length on the platform, with the wide surface connected to the flat plate, press one end, and use a transparent protractor to press against the other end to measure the degree of twist of the cross section around the longitudinal axis.
4.2.4 Rectangle measurement method:
Use an optical projector to measure the α angle.
Note: The supplier may not measure, but must ensure that. 4.3 Surface quality inspection
4.3.1 The outer surface of the pipe should be checked by force one by one. 4.3.2 The inner surface of each pipe should be inspected by the fluorescent lamp. 4.3.3 The surface roughness can be inspected by the standard block daily comparison method, or the Ra value can be measured by the stylus profilometer, but the measurement should span the entire wide and narrow sides of the waveguide, and the rounded corners are not included in the measurement range. 5 Inspection rules
5.1 Inspection and acceptance
5.1.1 The pipes should be inspected and accepted by the supplier's technical supervision department, and the product quality should be guaranteed to meet the requirements of this standard. 5.1.2 The buyer should re-inspect the received products. If the re-inspection results do not meet the requirements of this standard, the buyer should submit the matter to the supplier within three months from the date of receipt of the product, and the supplier and buyer should negotiate to resolve the problem. 5.2 Batches
Pipes should be submitted for inspection in batches, and each batch of pipes should be composed of the same brand, state and specification. 5.3 Inspection items
Each batch of pipes should be inspected for chemical composition, external dimensions and surface quality. 5.4 Sampling location and number of samples
5.4.1 Sampling of chemical composition:
5.4.1.1 During the process of melting and casting pipe ingots, the supplier shall take one sample from each furnace for chemical composition inspection. 5.4.1.2 The buyer shall take one sample from each batch of pipes for chemical composition inspection. 5.4.2 The external dimensions and surface quality of each pipe shall be measured. 5.5 Repeat test
For the chemical composition analysis test, even if one sample fails the test result, double samples shall be taken from the batch for re-inspection of the unqualified item. If one sample still fails the re-inspection result, the entire batch shall be scrapped. 519
6 Marking, packaging, transportation, purchase and storage
6.1 Marking
GB 8893--88
The packaging marking of pipes shall comply with the relevant marking provisions in GB8888-88 "Packaging, marking, transportation and storage of heavy non-ferrous metal processing products".
6.2 Packaging
Pipes shall be wrapped with packaging paper (wax paper or moisture-proof paper and other packaging materials) along the length of the pipes according to the size of the specifications. The two ends of the pipes shall be sealed with soft paper and placed in an iron (iron non-ferrous) packaging box of equivalent size and covered with rust-proof paper or wax paper in a straight and orderly manner according to the length of the pipes. No movement is allowed. The gaps shall be filled with paper scraps without words. The net weight of each box shall not exceed 1000kg. 6.3 Transportation and storage
During transportation and storage, the products should be protected from collision, moisture, wetting and corrosion by active chemical substances. Additional remarks:
This standard was drafted by Shenyang Nonferrous Metal Processing Plant. The main drafters of this standard are Tan Zhongcheng and Zhang Chunxuan. 5303.2 Annealing treatment
Pipes made of H62 should be annealed to remove internal stress. 3.3 Surface quality
3.3.1 The inner surface of the pipe should be smooth and clean, and should not have defects such as cracks, burrs, peeling, pores, pits, scratches and car jumping marks. However, longitudinal tensile marks, surface pitting caused by drawing, oxidation color, redness, etc. are not used as scrapping basis. When the inner width of the pipe is greater than 100mm, the inner surface roughness (Ra) should not be greater than 1.6μm; the inner surface roughness (Ra) of the pipe with an inner width of not more than 100mm should not be greater than 0.8μm. By agreement between the two parties, pipes with an inner surface roughness (Ra) of 0.4μm can be supplied. Note: The supplier may not conduct the internal surface roughness inspection, but it must be guaranteed. 3.3.2 The outer surface of the pipe should not have cracks or peeling, and defects such as folds, bubbles, scratches, pits, bumps and pressed objects that cause the outer cross-section to exceed the tolerance after inspection and repair are not allowed. Drawing marks, oxidation color and reddening are not used as the basis for scrapping. 518
4 Test method
4.1 Chemical composition arbitration analysis method
GB8893
The chemical composition arbitration analysis method of pipes, T2 and TU1 shall be carried out in accordance with the provisions of GB5121-85 "Chemical Analysis Method for Copper". 1162 and H96 shall be carried out in accordance with the provisions of GB5122-85 "Chemical Analysis Method for Yellow Steel" 4.2 Dimension measurement method
4.2.1 Use a sub-ruler, steel tape measure or other measuring tools that can ensure measurement accuracy to measure the size of the pipe. Use an optical projector to measure the angle.
Note: The supplier may not measure the Y-angle, but must ensure that 4.2.2 Bend measurement method:
Put the pipe parallel to the platform, use a 1㎡ long steel ruler to lean against the concave side of the measured pipe, and use a feeler gauge or other measuring tool to measure the maximum distance between the pipe and the steel ruler.
4.2.3 Twist measurement method:
Put the pipe of specified length on the platform, with the wide surface connected to the flat plate, press one end, and use a transparent protractor to press against the other end to measure the degree of twist of the cross section around the longitudinal axis.
4.2.4 Rectangle measurement method:
Use an optical projector to measure the α angle.
Note: The supplier may not measure, but must ensure that. 4.3 Surface quality inspection
4.3.1 The outer surface of the pipe should be checked by force one by one. 4.3.2 The inner surface of each pipe should be inspected by the fluorescent lamp. 4.3.3 The surface roughness can be inspected by the standard block daily comparison method, or the Ra value can be measured by the stylus profilometer, but the measurement should span the entire wide and narrow sides of the waveguide, and the rounded corners are not included in the measurement range. 5 Inspection rules
5.1 Inspection and acceptance
5.1.1 The pipes should be inspected and accepted by the supplier's technical supervision department, and the product quality should be guaranteed to meet the requirements of this standard. 5.1.2 The buyer should re-inspect the received products. If the re-inspection results do not meet the requirements of this standard, the buyer should submit the matter to the supplier within three months from the date of receipt of the product, and the supplier and buyer should negotiate to resolve the problem. 5.2 Batches
Pipes should be submitted for inspection in batches, and each batch of pipes should be composed of the same brand, state and specification. 5.3 Inspection itemsbzxz.net
Each batch of pipes should be inspected for chemical composition, external dimensions and surface quality. 5.4 Sampling location and number of samples
5.4.1 Sampling of chemical composition:
5.4.1.1 During the process of melting and casting pipe ingots, the supplier shall take one sample from each furnace for chemical composition inspection. 5.4.1.2 The buyer shall take one sample from each batch of pipes for chemical composition inspection. 5.4.2 The external dimensions and surface quality of each pipe shall be measured. 5.5 Repeat test
For the chemical composition analysis test, even if one sample fails the test result, double samples shall be taken from the batch for re-inspection of the unqualified item. If one sample still fails the re-inspection result, the entire batch shall be scrapped. 519
6 Marking, packaging, transportation, purchase and storage
6.1 Marking
GB 8893--88
The packaging marking of pipes shall comply with the relevant marking provisions in GB8888-88 "Packaging, marking, transportation and storage of heavy non-ferrous metal processing products".
6.2 Packaging
Pipes shall be wrapped with packaging paper (wax paper or moisture-proof paper and other packaging materials) along the length of the pipes according to the size of the specifications. The two ends of the pipes shall be sealed with soft paper and placed in an iron (iron non-ferrous) packaging box of equivalent size and covered with rust-proof paper or wax paper in a straight and orderly manner according to the length of the pipes. No movement is allowed. The gaps shall be filled with paper scraps without words. The net weight of each box shall not exceed 1000kg. 6.3 Transportation and storage
During transportation and storage, the products should be protected from collision, moisture, wetting and corrosion by active chemical substances. Additional remarks:
This standard was drafted by Shenyang Nonferrous Metal Processing Plant. The main drafters of this standard are Tan Zhongcheng and Zhang Chunxuan. 5305 Repeated test
For the chemical composition analysis test, even if one sample fails the test result, double samples should be taken from the batch to retest the failed item. If one sample still fails the retest result, the whole batch shall be scrapped. 519
6 Marking, packaging, transportation, purchase and storage
6.1 Marking
GB 8893--88
The packaging marking of pipes shall comply with the relevant marking provisions in GB8888-88 "Packaging, marking, transportation and storage of heavy non-ferrous metal processing products".
6.2 Packaging
Pipes should be wrapped with packaging paper (wax paper or moisture-proof paper, etc.) along the length of the pipes according to the size of the specifications. Both ends of the pipes should be sealed with soft paper and placed in a straight and orderly manner in iron (iron non-ferrous) packaging boxes of equivalent size covered with rust-proof paper or wax paper according to the length of the pipes. Do not move them. The gaps should be filled with paper scraps without words. The net weight of each box should not exceed 1000kg. 6.3 Transportation and storage
During transportation and storage, collision, moisture, wetting and corrosion by active chemical substances should be prevented. Additional remarks:
This standard was drafted by Shenyang Nonferrous Metal Processing Plant. The main drafters of this standard are Tan Zhongcheng and Zhang Chunxuan. 5305 Repeated test
For the chemical composition analysis test, even if one sample fails the test result, double samples should be taken from the batch to retest the failed item. If one sample still fails the retest result, the whole batch shall be scrapped. 519
6 Marking, packaging, transportation, purchase and storage
6.1 Marking
GB 8893--88
The packaging marking of pipes shall comply with the relevant marking provisions in GB8888-88 "Packaging, marking, transportation and storage of heavy non-ferrous metal processing products".
6.2 Packaging
Pipes should be wrapped with packaging paper (wax paper or moisture-proof paper, etc.) along the length of the pipes according to the size of the specifications. Both ends of the pipes should be sealed with soft paper and placed in a straight and orderly manner in iron (iron non-ferrous) packaging boxes of equivalent size covered with rust-proof paper or wax paper according to the length of the pipes. Do not move them. The gaps should be filled with paper scraps without words. The net weight of each box should not exceed 1000kg. 6.3 Transportation and storage
During transportation and storage, collision, moisture, wetting and corrosion by active chemical substances should be prevented. Additional remarks:
This standard was drafted by Shenyang Nonferrous Metal Processing Plant. The main drafters of this standard are Tan Zhongcheng and Zhang Chunxuan. 530
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