Q/BQB 470-2018_English: PDF (Q/BQB470-2018)
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Q/BQB 470-2018 | English | 90 |
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Color TV tube mask frame steel strip
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Q/BQB 470-2018
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Q/BQB 470-2009 | English | 199 |
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Steel tubes for shadow mask for color television picture tubes [replaced by Q/BQB 470-2014]
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Q/BQB 470-2009
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Standard ID | Q/BQB 470-2018 (Q/BQB470-2018) | Description (Translated English) | Color TV tube mask frame steel strip | Sector / Industry | Chinese Industry Standard | Classification of Chinese Standard | QBQ | Word Count Estimation | 4,476 | Administrative Organization | Baoshan Iron and Steel Co., Ltd. | Standard_ID | Q/BQB 470-2009 (Q/BQB470-2009; QBQB 470-2009; QBQB470-2009) | Description (Translated English) | Steel tubes for shadow mask for color television picture tubes | Sector / Industry | Chinese Industry Standard | Word Count Estimation | 5,000 | Drafting Organization | BaoSteel Group | Administrative Organization | BaoSteel Group |
Q/BQB 470-2018
BQB
ENTERPRISE STANDARD OF
BAOSHAN IRON & STEEL CO., LTD.
Color TV tube mask frame steel strip
Issued on. February 05, 2018
Issued by. Baoshan Iron & Steel Co., Ltd.
Table of Contents
Self-commitment ... 3
1. Chemical composition ... 5
2. Mechanical properties ... 5
3. Inspection and test ... 5
Self-commitment
The contents of Q/BQB 470-2018 “Color TV tube mask frame steel strip”,
prepared and published by our company, meet the requirements of relevant
national laws and regulations, mandatory standards, and related industrial
policies; and in accordance with the prescribed procedures, are approved for
release by the legal representative of the enterprise. The products produced by
our company meet the technical requirements stipulated in this Standard. The
standard number is clearly indicated on the corresponding product packaging.
Our company is responsible for the truthfulness, accuracy, and legality of the
declared public information, and assumes full legal responsibility for the
consequences of the implementation of this Standard.
Baoshan Iron & Steel Co., Ltd.
February 5, 2018
Technical Index 1
Index name. Main indexes such as chemical composition and
mechanical properties
Index requirements. Main indexes such as chemical composition and
mechanical properties, and test methods are shown
in the attachment
(See Page 4 for details)
......
Q/BQB 470-2009
Steel tubes for shadow mask for color television picture tubes
Baoshan Iron & Steel Co., Ltd. Enterprise Standard
Color TV picture tube mask frame with steel
Replacing Q/BQB 470-2003
1 Scope
This standard specifies the color TV picture tube mask frame with steel classification, code, size, technical requirements, inspection and testing, including
Equipment, signs and test files.
This standard applies to Baoshan Iron & Steel Co., Ltd. production of color TV picture tube mask frame with steel (hereinafter referred to as strip).
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
All amendments (not including errata content) or revisions do not apply to this standard, however, encourage up according to the standard
Research into whether the parties to the agreement to use the latest versions of these documents. For undated references, the latest edition
Apply to this standard.
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 230.1-2004 Metallic Rockwell hardness test - Part 1. Test methods (A, B, C, D,
E, F, G, H, K, N, T scales)
GB/T 2975-1998 steel and steel products for mechanical testing and sample preparation position
GB/T 4336-2002 carbon steel and low alloy steel spark source atomic emission spectrometry method (conventional method)
GB/T 8170-2008 revised value represents about rules and limit values and judgment
GB/T 20066-2006 Steel and iron - Sampling and determination of the chemical composition of the sample with a sample preparation method
GB/T 20123-2006 Steel - Determination of total carbon and sulfur content of the high-frequency induction furnace combustion infrared absorption method (conventional
method)
GB/T 20125-2006 Determination of low-alloy steel by inductively coupled plasma atomic emission spectroscopy multi-element content
GB/T 20126-2006 Determination of non-alloy steel of low carbon content - Part 2. induction furnace (preheated) within
Infrared absorption method after combustion
Q/BQB 400 cold-rolled products, packaging, labeling and inspection documents
Size Q/BQB 401 cold rolling steel sheet and strip, shape, weight and tolerance
3 Classification and designation
Classification and use of steel should meet the requirements of Table 1.
Table 1
Trademark use
BCK-1
BCK-2
For the mask frame
4 Ordering information required (the demand side explanation)
The user must provide the following information when ordering 4.1.
a) Product Name (strip);
b) The product standards;
c) grades;
d) specifications and dimensional accuracy (thickness, width, etc.);
e) Roughness precision;
f) the edge of the state;
g) weight;
h) packaging;
i) Purpose;
j) Other.
Baoshan Iron & Steel Co. 2009-01-08 Posted 2009-06-30 before implementation
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4.2 If the order does not indicate the edge of the state contract and packaging, the product according to the present standard trimming or trimming strip steel supply,
According to the supplier to provide the packaging packaging.
5 size, shape, weight and tolerance
5.1 size of the strip, the weight should be in accordance with Table 2. Negotiated by both sides, in accordance with the provisions of Table 2 Nominal width
The width of the outer order.
Strip thickness of 5.2 tolerance, width tolerance shall comply with Q/BQB 401 senior precision. others
Size, shape, weight and tolerances shall comply with the provisions of Q/BQB 401's.
Table 2
Grade Nominal thickness
mm
Nominal width
mm
weight
BCK-1 0.50 ~ 1.6 900 ~ 1200 ≤10
BCK-2 0.80 ~ 1.6 900 ~ 1290 ≤10
5.3 by slitting steel strip delivery, width tolerance of 0 ~ 1.5mm, delivery weight of not more than 1.7t.
6 Technical Requirements
6.1 steel chemical composition (melting analysis) shall meet the requirements of Table 3.
6.2 allows the chemical composition of the finished strip deviation shall comply with GB/T 222's.
table 3
% (Mass fraction) chemical composition (melting analysis) is not greater than Grade
C Si Mn PS Alt
BCK-1 0.03 0.03 0.50 0.035 0.035 0.03
BCK-2 0.005 0.03 0.50 0.030 0.020 -
6.2 Melting Method
Steel sheet and strip steel using oxygen used in smelting.
6.3 Delivery Status
6.3.1 After the steel sheet and strip cold rolling after annealing and smooth delivery.
6.3.2 usually coated steel sheet and strip oil supply, the film of oil should be used to remove an aqueous alkali solution. In conventional packaging, transportation, loading
By unloading and storage conditions, the supplier shall ensure that from the date of manufacture is completed within six months, the surface of the stainless steel sheet and strip. according to
The demand side, the agreement by both parties and specified in the contract, but also may not be coated with oil supply.
6.4 Mechanical and technological properties of steel shall conform to Table 4.
Table 4
A tensile test
Grade Tensile Strength
MPa
not less than
The Elongation
(L0 = 50mm, b = 25mm)
not less than
Hardness b
HRB
no greater than
BCK-1 250 37 55
BCK-2 250 35 45
a sample of GB/sample, a sample of 228 T direction P14 portrait.
b is not greater than the thickness of 1.1mm products, the measured hardness value is usually measured HRF, then normative provisions of Appendix A, will be converted to hardness HRF
Hardness of HRB. Hardness is the average of three tests.
6.5 surface quality
6.5.1 steel surface may not have scars, cracks, inclusions and other harmful defects on the use of the strip without any delamination.
6.5.2 For steel, because there is no opportunity to cut with the defective portion, thus strip allowed defect delivery, but the defective unit
Points not more than 6% of the total length of each volume.
7 inspection and testing
7.1 surface quality of the strip was observed with the naked eye.
7.2 The size and shape of the strip with a suitable measuring measuring tool.
7.3 Acceptance steel sheet and strip shall grant each inspection lot shall be not more than 30 tons of the same grade, same size, same processing condition,
Steel sheet and strip heat treatment system with the composition for a volume of 30 tons in the major strip to each volume as a test batch.
7.4 each batch of test strip project, the number of tests, sampling methods and test methods shall be in accordance with Table 5.
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table 5
Number of test items Test (a) Test Method for Sampling method
Chemical composition 1/furnace GB/T 20066 GB/T 223, GB/T 4336, GB/T 20123, GB/T 20125, GB/T 20126
Tensile test 1/batch GB/T 228
Hardness 1/batch GB/T 2975 GB/T 230.1
7.5 For the tensile test and hardness test results if an item does not meet the standard requirements, from the same batch and then either take a double
The number of specimens that failed project reinspection. Retest results (including all indicators of the project test required) qualified,
The entire batch of qualified. Retest results (including all indicators of the project test required) even if there is a failure indicator, the complex
Test failed. As retest failed, already a test and the test results can not be incompatible single acceptance, but without making the batch of material
Single test can be resubmitted by piece and acceptance tests.
8 packaging, marking and inspection documents shall comply with Q/BQB 400's.
9 numerical rounding methods should comply with GB/T 8170's.
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Appendix A
(Normative)
Rockwell hardness conversion table
A.1 Rockwell hardness converter shall comply with the requirements of Table A.1.
Table A.1
HRB (100kgf) HRF (60kgf) HRB (100kgf) HRF (60kgf)
100--65 93.9
99--64 93.4
98--63 92.8
97--62 92.2
96--61 91.7
95--60 91.1
94--59 90.5
93--58 90.0
92--57 89.4
91--56 88.8
90--55 88.2
89--54 87.7
88--53 87.1
87--52 86.5
86--51 86.0
85--50 85.4
84--49 84.8
83--48 84.3
82--47 83.7
81--46 83.1
80--45 82.6
79--44 82.0
78--43 81.4
77--42 80.8
76--41 80.3
75 99.6 40 79.7
74 99.1 39 79.1
73 98.5 38 78.6
72 98.0 37 78.0
71 97.4 36 77.4
70 96.8 35 76.9
69 96.2 34 76.3
68 95.6 33 75.7
67 95.1 32 75.2
66 94.5 31 74.6
74.0 30
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Additional information.
Instead of the standard Q/BQB 470-2003.
This standard is compared with Q/BQB 470-2003, the main changes are as follows.
The main modifications are.
- Cancel grades SPCCCK.
Appendix A of this standard is a normative appendix.
The standard proposed by Baoshan Iron & Steel Co., the Department of technical quality management.
This standard was drafted by the Baoshan Iron and Steel Co., the Department of technical quality management.
Shi Hongyan drafters of this standard.
This standard was first published in 1988 and 1994, the first revision, 1999 the Second Amendment, the third revision of 2003,
This is the fourth revision.
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