Some standard content:
UDC(669.71+669.715)-42
National Standard of the People's Republic of China
GB 3618-89
Aluminium and aluminium alloy patterned sheet
Wrought aluminium and aluminium alloy -Patterned sheetPromulgated on 1989-03-22
Implementation on 1990-01-01
State Administration of Technical Supervision
National Standard of the People's Republic of China
Aluminium and aluminium alloy patterned sheet
Wrought aluminium and aluminium alloy-Patterned sheet
Subject content and scope of application
GB 3618-89
Replaces GB3618-83
This standard specifies the classification, technical requirements, test methods, inspection rules and packaging of aluminium and aluminium alloy patterned sheets. This standard applies to aluminum and aluminum alloy single-sided patterned plates for anti-skid use in buildings, vehicles, ships, aircraft, etc. 2 Reference standards
Metal tensile test methods
Chemical composition of aluminum and aluminum alloy processed products GB3190
GB3194
Dimensions and allowable deviations of aluminum and aluminum alloy plates Packaging, marking, transportation and storage of aluminum and aluminum alloy processed products GB3199 full
GB3246 Microstructure inspection methods for aluminum and aluminum alloy processed products Chemical analysis methods for aluminum and aluminum alloys
GB6987
3 Product classification
3.1 Patterns
The patterns of patterned plates are divided into seven types: No. 1 patterned plate square type (Figure 1); No. 2° patterned plate lentil type (Figure 2); No. 3 patterned plate five-stripe type (Figure 3), No. 4 patterned plate three-stripe type (Figure 4); No. 5 patterned plate pointer type (Figure 5); No. 6 patterned plate diamond type (Figure 6); No. 7 patterned plate four-stripe type (Figure 7).
Figure 11 checkered plate
Approved by China National Nonferrous Metals Industry Corporation on January 7, 1989 and implemented on January 1, 1990
GB3618-89
Figure 22 checkered plate
No. 3 checkered plate
GB 3618-89
No. 4 checkered plate
Figure 55 checkered plate
GB 3618--89
Figure 66 checkered plate
Figure 77 checkered plate
GB3618—89
3.2 Product code, brand, state and specification 3.2.1 The product code, brand, state and specification shall comply with the provisions of Table 1. Table 1
Base plate thickness t
L1, L2,
L3, L4,
L5, 6
LF2, LF43
LY11, LF2
L1, L2,
L3, L4,
L5, L6
LF2, LF43
M, Y2
M, Y2
1.0,1.2,1.5,1.8.
2.0,2.5,3.0
2.0, 2.5,3.0.3.5,
1.5,2.0,2.5,3.0,
3.5,4.0,4.5
2.0,2.5,3.0,3.5,
1.5,2.0,2.5,3.0
3.0，4.0，5.0，
2.0,2.5,3.0,3.5.
1000~1600
Note: ①Y, state is the state produced by 20%~40% cold deformation after the plate is completely recrystallized annealed. ②Other alloys and states should be negotiated by both parties. Length
2000~10000
3.2.2 Hard alloy pattern plate, with LB2 alloy coating on both sides, the average thickness of the coating on the pattern surface and the bottom plate without pattern surface shall not be less than 4% of the nominal thickness of the bottom plate.
3.3 Permissible deviation of overall dimensions
3.3.1 The permissible deviation of thickness, width and length of pattern plate shall comply with the provisions of Table 2. Bottom plate thickness 1
GB3618-89
Permissible deviation of thickness
Note: ① When the thickness deviation is required to be a positive value, it shall be negotiated by both parties and indicated in the contract. Permissible deviation of width
Permissible deviation of length
② Plates of non-standard thickness can be supplied after negotiation between both parties and indicated in the contract, and their permissible deviation shall be inspected according to the adjacent small specifications. ③ Plates with a thickness of 4.5~6.0mm shall be supplied without trimming. After negotiation between the two parties and with the above information specified in the contract, the goods can be delivered with sawn edges. 3.3.2
The allowable deviation of the rib height of the patterned plate is guaranteed by the supplier's process, but shall comply with the provisions of Table 3. Table 3
Code of patterned plate
No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 7
Allowable deviation of rib height,
The unevenness of the patterned plate (referring to the gap between the plate surface and the platform when the patterned plate is placed freely on the inspection table) shall comply with the provisions of Table 4. Table 4
Unevenness,, not more than
Y,Yi,Y2,M
The diagonal deviation of the cut-edge patterned plate shall comply with the provisions of Table 5. Length directionWww.bzxZ.net
>4000~6000
Width direction
The difference between the lengths of the two diagonals shall not exceed
GB3618-89
3.3.5 Each batch is allowed to have short-length plates with a number not exceeding 10% of the delivery quantity. The length and width of short-length plates shall not be less than 90% of the nominal size. When short length is not allowed, it shall be indicated in the contract. 3.4 Marking example
No. 1 checkered plate made of LY12 alloy, in the state of quenching and natural aging, with a nominal bottom plate thickness of 1.5mm, a width of 1000mm, a.
length of 2000mm, marked as:
No. 1 checkered plate LY12CZ1.5×1000×2000 GB3618—89b. The semi-hard No. 3 checkered plate made of LF2 alloy has a nominal bottom plate thickness of 4.0mm, a width of 1200mm, and a length of 3000mm, marked as:
No. 3 checkered plate LF2Y, 4.0×1200×3000GB3618-894 Technical requirements
4.1 Chemical composition
The chemical composition of aluminum and aluminum alloy checkered plates shall comply with the provisions of GB3190. 4.2 Mechanical properties
The room temperature mechanical properties of No. 1 checkered plates shall comply with the provisions of Table 6. The performance indicators of checkered plates with other patterns are reference values. If required by the purchaser, they should be indicated in the contract.
Tensile strength
No. 2, No. 4, No. 6
No. 3, No. 5
No. 3, No. 5, No. 7
No. 2, No. 3, No. 5
No. 2, No. 4, No. 7
No. 3, No. 5
L1,L2,L3,
L4,L5,L6
Note: The thickness used to calculate the cross-sectional area is the base plate thickness. State
N/mm2 (kgf/mm2)
402 (41)
216 (22)
98 (10)
<147 (15)
177 (18)
196 (20)
<98 (10)
118 (12)
<147 (15)
Specified residual elongation stress
N/mm2 (kgf/mm)
not less than
255 (26)
Elongation
4.3 High magnification structure
The microstructure of the patterned plate is not allowed to be overburned.
4.4 Surface quality
GB3618-89
4.4.1 The patterned surface of the patterned plate should be well processed and should not have defects that affect its use. 4.4.2 Surface changes caused by heat treatment are allowed. 4.4.3 The total area of bubbles on the patterned surface per square meter shall not exceed 100mm2. 4.4.4 The depth of defects on the patterned surface of the patterned plate shall not exceed the negative deviation of the bottom plate thickness, and the minimum thickness shall be guaranteed. 4.4.5 When the patterned plate is not trimmed, the nominal size of the middle part of the plate shall meet the requirements of this standard. 5 Test methods
5.1 The arbitration analysis method of the chemical composition of the patterned plate shall be carried out in accordance with the provisions of GB6987. 5.2 The mechanical properties test method shall be carried out in accordance with the provisions of GB228. 5.3 For the patterned plate subjected to fire, the microstructure test method shall be carried out in accordance with the provisions of GB3246. 5.4 The size measurement method shall be carried out in accordance with the provisions of GB3194. 5.5 The test method for nitrate traces is as follows:
Drop a drop of diphenylamine sulfuric acid solution with a concentration of 0.5% (volume concentration) on the plate surface. After 10 to 15 seconds, if the drop turns blue sharply, it proves that nitrate exists at that location. If it does not turn blue, it proves that there is no nitrate at that location. 6 Inspection rules
6.1 Inspection and acceptance
The patterned plate 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. 6.2 Batches
The patterned plates shall be submitted for inspection in batches, and each batch shall consist of the same pattern, alloy, state and specification. 6.3 Inspection items
Each batch of patterned plates shall be inspected for external dimensions, surface quality, and mechanical properties required by the user (mechanical properties must be checked for No. 1 patterned plates).
Unless otherwise specified in the contract, the coating layer shall not be tested. .6.4 Sampling position and number of samples
6.4.1 When sampling for chemical composition arbitration, samples can be taken at will, but for patterned plates with coating layers, the coating layer should be removed before sampling. 6.4.2 When doing mechanical property test, samples should be taken from the end of the plate, and the angle between the long axis direction of the sample and the rolling direction is: 45° for patterned plate No. 1 and 90° for other patterned plates. The number of samples is 2% of the number of sheets in the batch (not less than 2 sheets), and 1 sample is taken for each sheet. 6.4.3 For patterned plates that have been solution heat treated in a nitrate furnace, 1% of each batch is sampled according to the number of sheets to test for nitrate traces. 6.5 Repeated test
When the test result of one sample in the room temperature mechanical property test is unqualified, double the number of samples should be cut from the plate of the unqualified sample for repeated test. If one sample is still unqualified in the re-test result, the plate shall be scrapped. The supplier shall inspect the plate sections represented by the unqualified samples one by one, and deliver the qualified ones and discard the unqualified ones. 7 Marking, packaging, transportation and storage
7.1 Marking
The marking of the patterned plate packaging box shall comply with the provisions of GB3199. The supplier shall stamp the following marks on the top and bottom three sheets of each stack of each batch of qualified plates:
Inspection stamp of the supplier's technical supervision department;
b. Alloy grade;
c. Supply status;
d. Batch number of the patterned plate;
e. Specifications.
7.2 Packaging, transportation and storage
GB3618--89
No. 1 patterned plate shall be packed in boxes with oil, and other patterned plates shall be packed in stacks without oil coating or paper padding. When oil coating or packaging box packaging is required, it shall be indicated in the contract, and the others shall comply with the provisions of GB3199. 7.3 Quality certificate
Each batch of patterned plates shall be accompanied by a quality certificate that meets the requirements of this standard, which shall indicate: supplier name,
alloy grade,
supply status,
specification,
batch number,
batch weight and number of pieces;
mechanical properties test results
checkmark of the technical supervision department,
number of this standard:
packaging period.
GB3618—89
Appendix A
Theoretical weight of patterned plates
(reference)
The material specific gravity of patterned plates No.11, No.2, No.4 and No.6 is 2.8 (equivalent to LY11). The theoretical weight per square meter of different patterned plates is shown in Table A1.
Thickness of base plate
Theoretical weight of each square meter of various pattern plates No. 4
The theoretical weight of each square meter of pattern plates No. 21, No. 3, No. 5, and No. 7 is shown in Table A2. A2
Thickness of base plate
LF6, LF43
A3. When the pattern of pattern plates No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, and No. 7 remains unchanged and only the alloy is changed, its specific gravity is converted to 10
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