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| BZJ 495-2008 | English | 319 |
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Cold rolled steel strip for battery shell
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BZJ 495-2008
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Standard similar to BZJ495-2008 BZJ 464 BZJ 465 BZJ 463 Basic data | Standard_ID | BZJ 495-2008 (BZJ495-2008) | | Description (Translated English) | Cold rolled steel strip for battery shell | | Sector / Industry | Chinese Industry Standard | | Word Count Estimation | 8,000 | | Drafting Organization | BaoSteel Group | | Administrative Organization | BaoSteel Group | BZJ495-2008: Cold rolled steel strip for battery shell---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Cold rolled steel strip for battery shell
Baoshan Iron & Steel Co., Ltd. Interim Technical delivery conditions
Battery case for cold rolling strip
Replacing BZ J495-2004
1 Scope
The Provisional Technical delivery conditions specified battery housing classification for cold rolling and strip code, size, shape, weight, technology
Operation requirements, inspection and testing, packaging, marking and quality certificate.
The technical delivery conditions apply to interim Baoshan Iron & Steel Co., Ltd. manufactures battery case for cold rolling strip (hereinafter
He said strip).
2 Normative references
The following documents contain provisions which, through this interim technical supply conditions of reference in terms of the Provisional Technical delivery conditions for this. All
Is dated reference documents, all subsequent amendments (not including errata content) or revisions do not apply to this
Interim technical supply conditions, however, encourage the parties to the present interim study Technical delivery conditions for agreement as to its use
The latest versions of these files. For undated reference documents, the latest versions apply to this interim technical supply Article
Member.
GB/T 222-2006 finished steel chemical composition and permissible variations
GB/T 223 steel and alloy chemical analysis method
GB/T 228-2002 metallic materials at room temperature tensile test method
GB/T 2975-1998 steel and steel products for mechanical testing and sample preparation position
GB/T 8170-1987 numerical rounding rules
GB/T 20066-2006 Steel and iron - Sampling and determination of the chemical composition of the sample with a sample preparation method
GB/T 4336-2002 carbon steel and low alloy steel spark source atomic emission spectrometry method (conventional method)
Q/BQB 400 cold-rolled products, packaging, marking and quality certification
Size Q/BQB 401 cold rolling steel sheet and strip, shape, weight and tolerance
ISO 6508-1-1999 Metallic Rockwell hardness test - Part 1. Test methods
SAEJ911-1998 cold rolled steel surface roughness and the peak number of measurement methods
3 Classification and designation
3.1 Purpose and strip codes specified in Table 1.
Table 1
Trademark use
BDCK battery shells
3.2 steel sheet and strip surface quality by distinguishing as defined in Table 2.
Table 2
Level code
More advanced surface finishing FB (O3)
3.3 Press the strip surface structure distinction as defined in Table 3.
table 3
Surface structure code
Pock D
Bright surface B
4 Ordering information required
The user should provide the following information when ordering 4.1.
a) Product Name
b) The product number interim technical supply conditions
c) Grade
d) Product Specifications
e) surface structure
f) Packing
g) use
Baoshan Iron & Steel Co. 2008-02-18 Posted 2008-03-01 implementation
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5 size, shape, weight and tolerance
5.1 strip for nominal size range specified in Table 4.
Table 4 Unit. mm
Nominal thickness Thickness tolerance nominal width of tolerance for the inner diameter of the steel strip surface structure
-0.007 ~ 0.003 0.25 ~ 0.30 surface (B)
0.25 ~ 0.50 ± 0.01
Trimming. 800 to 1005
Not cutting edge. 800 ~ 1020
Trimming. 0-3
Not cutting edge. 0 to 5508 Pock (D)
5.2 strip according to the actual weight of the delivery.
5.3 Other dimensions, shape, weight and tolerances shall comply with the provisions of Q/BQB401 of.
6 Technical Requirements
6.1 Grades and chemical composition
Steel grades and chemical composition (melting analysis) should meet the requirements of Table 5. Finished steel chemical composition deviation should be allowed
Comply with GB/T 222's.
table 5
Chemical composition% Grade
C Si Mn PS Alt
BDCK ≤0.05 ≤0.03 ≤0.50 ≤0.030 ≤0.030 ≤0.060
6.2 Melting Method
Steel used in steel smelting using oxygen.
6.3 Delivery Status
6.3.1 strip after cold rolling and annealing after the formation of delivery.
6.3.2 usually oiled steel supply, the applied film should be able to get rid of an alkaline aqueous solution, for guarantees from the date of manufacture, in the pass
Under normal non-naked bag packaging, transportation, handling and storage conditions, the surface of the steel strip within six months does not rust.
6.4 Mechanical and technological properties of steel should meet the requirements in Table 6.
Table 6
Trademark
A tensile strength
MPa
not less than
The Elongation
A 50mm%
not less than
hardness
HRB
BDCK 275 34 40 ~ 56
a sample of the GB/T 228 P14 sample.
6.5 surface quality
6.5.1 steel surface may not have scars, cracks, inclusions and other use of harmful defects.
6.5.2 surface quality of the strip should be in accordance with Table 7.
6.5.3 In the absence of the strip with the opportunity to cut the defective portion, thereby allowing the delivery with defects, but shall not exceed the defective part
More than 6% of the total length of each volume.
Table 7
Level features
More advanced surface finishing
FB (O3)
Allowing a small amount does not affect the surface moldability and coating, coating adhesion defects, such as minor cuts, the pressure
Marks, pitting, roll mark and oxidation tint like.
The average surface roughness of 6.6 strip should meet the requirements in Table 8.
Table 8
The average surface roughness Ra of structure
Pock 0.5μm < Ra ≤1.0μm
Bright finish Ra ≤0.5μm
7 inspection and testing
7.1 strip appearance was visually inspected.
7.2 The size and shape of the strip should be used in an appropriate measurement tool.
7.3 Trimming strip thickness measurement point from the edge of not less than 15mm at any point.
7.4 Acceptance strip should grant each inspection lot shall be not more than 30 tons of the same grade, same size, same strip processing status
composition.
7.5 each batch of test strip project, the number of samples, sampling methods, test methods and sampling should be directed to comply with the requirements of Table 9.
7.6 For tensile, hardness and roughness of the test, the test results if an item does not meet the technical requirements for a provisional Delivery
Seek, from the same batch and then either take double the number of samples that failed project reinspection. Retest results (including the
All indicators eye test required) qualified, then the whole batch is qualified. Retest results (including all tests required by the project
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Index) even if there is an indicator of failure, then retest failed. As retest failed, already a test and the test results are not
Combined single piece can not acceptance, but without making a single batch of material test piece by piece may resubmit testing and acceptance.
Table 9
The number of samples test item number (a) Test Method for Sampling method Sampling Direction
Chemical analysis 1 1/furnace GB/T
GB/T 223 or GB/T
2 Tensile Test 1 GB/T 228 longitudinal specimens
3 hardness 1 ISO 6508-1 -
The surface roughness 4 1/roll
GB/T
SAE J911 -
8 packaging, marking and quality certificate
Steel packaging, marking and quality certificate shall comply with Q/BQB400 of. For a party to have special packaging weight
Requirements should be specified in the contract.
9 numerical rounding rules
Numerical rounding rules should comply with GB/T 8170's.
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