YB/T 4003-2016 PDF English
US$1465.00 · In stock · Download in 9 secondsYB/T 4003-2016: Standard diagrams for macrostructure and defect in continuous casting slab Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid YB/T 4003: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| YB/T 4003-2016 | English | 1465 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Standard diagrams for macrostructure and defect in continuous casting slab
| Valid |
| YB/T 4003-1997 | English | RFQ |
ASK
|
3 days
|
Standard diagrams for macrostructure and defect in continuous casting slab
| Obsolete |
| YB 4003-1991 | English | RFQ |
ASK
|
11 days
|
(Slab continuous casting defects Indian rating chart)
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: YB/T 4003-2016
YB/T 4003-2016: Standard diagrams for macrostructure and defect in continuous casting slab---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/YBT4003-2016
YB
FERROUS METALLURGY INDUSTRY STANDARD
ICS 77.040.99
H 24
Replacing YB/T 4003-1997
Standard diagrams for macrostructure and defect in
continuous casting slab
Issued on. OCTOBER 22, 2016
Implemented on. APRIL 01, 2017
Issued by. Ministry of Industry and Information Technology of the People��s
Republic of China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Sampling and sample corrosion methods... 4
4 Defect classification and evaluation... 4
5 Inspection report... 8
Appendix A (Informative) Evaluation details for macrostructure and defect in
continuous casting slab... 10
Appendix B (Normative) Standard diagrams for macrostructure and defect in
continuous casting slab by etching... 12
Appendix C (Normative) Standard diagrams for macrostructure and defect in
continuous casting slab by sulphur print... 41
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard is a revision of YB/T 4003-1997 Standard diagrams for macrostructure
and defect in continuous casting slab.
Compared with YB/T 4003-1997, the major technical changes of this Standard are as
follows.
-- Expand the scope of application;
-- Add morphological characteristics and cause, as well as schematic diagram, of the
��white band��;
-- Add the evaluation details for some defects (see Appendix A), and modify the
standard diagrams accordingly (see Appendix B and Appendix C).
This Standard was proposed by China Iron and Steel Industry Association.
This Standard shall be under the jurisdiction of National Technical Committee 183 on
Iron and Steel of Standardization Administration of China (SAC/TC 183).
The drafting organizations of this Standard. Wuhan Iron and Steel Company Limited,
Shougang Group Co., Ltd., Hebei Iron and Steel Co., Ltd. Tangshan Branch, China
Metallurgical Information and Standardization Institute.
The drafters of this Standard. Han Rongdong, Chen Shihua, Luan Yan, Wang Zhifen,
Zhou Yigui, Ju Xinhua, Zhang Ping, Wu Lixin, Guo Jian, Deng Cuiqing.
The previous versions �C replaced by this Standard �C of the standard are.
-- YB/T 4003-1991, YB/T 4003-1997.
Standard diagrams for macrostructure and defect in
continuous casting slab
1 Scope
This Standard specifies the samples used in the testing of macrostructure and defect in
continuous casting slab by etching and sulfur print, as well as the morphological
characteristics, cause and evaluation principle of defects.
This Standard applies to the evaluation for macrostructure and defect in slabs such as
carbon steel and alloy steel produced by continuous casting process.
The qualification grade of various defects in this Standard and the defects that are not
allowed to exist shall be stipulated in the corresponding technical conditions and the
agreement between the two parties.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
GB/T 226, Test method for macrostructure and defect of steel by etching
GB/T 4236, Steel examination by sulphur print (Baumann method)
3 Sampling and sample corrosion methods
The sample cut-out and display methods shall comply with the provisions of GB/T 226
or GB/T 4236.
4 Defect classification and evaluation
4.1 Morphological characteristics, cause and evaluation principle of various defects
4.1.1 Center segregation
The morphological characteristics, cause and evaluation principle of center segregation
are as follows.
4.1.2 Center porosity
The morphological characteristics, cause and evaluation principle of center porosity are
as follows.
4.1.3 Intermediate crack
The morphological characteristics, cause and evaluation principle of intermediate crack
are as follows.
4.1.4 Corner crack
The morphological characteristics, cause and evaluation principle of corner crack are
as follows.
4.1.5 Triangular crack
The morphological characteristics, cause and evaluation principle of triangular crack
are as follows.
4.1.6 Alumina (Al2O3) inclusions
The morphological characteristics, cause and evaluation principle of alumina (Al2O3)
inclusions are as follows.
4.1.7 Pinhole bubbles
The morphological characteristics, cause and evaluation principle of pinhole bubbles
are as follows.
4.1.8 Honeycomb bubbles
The morphological characteristics, cause and evaluation principle of honeycomb
bubbles are as follows.
4.1.9 Silicate inclusions
The morphological characteristics, cause and evaluation principle of silicate inclusions
are as follows.
4.1.10 White bands
The morphological characteristics, cause and evaluation principle of white bands are as
follows.
4.2 Standard diagrams
4.2.1 This Standard includes the following two sets of standard diagrams.
a) Macrostructure diagram of continuous casting slab by etching (see Appendix B);
b) Sulfur print standard diagrams (see Appendix C).
4.2.2 All types of standard diagrams for defect are composed of 6 grades from 0.5 to
3.0, which increase with the severity of the defect. See Appendix A for the size or
quantity of specific defects.
4.3 Evaluation method and qualification grade
4.3.1 All types of defects are limited to visual visibility, at a start-rating grade of 0.5.
When evaluating, grade by comparing with the diagrams listed in Appendix B and
Appendix C. Where the defect grade cannot be determined by comparison, refer to
Appendix A for measurement and evaluation.
4.3.2 The selection of the standard diagram, the qualification grade of various defects
and the defects that are not allowed to exist shall be in accordance with the provisions
of product standards or technical conditions.
5 Inspection report
The inspection report shall include the following contents.
a) entrusting unit;
b) test steel designation;
c) melting number of the test sample;
d) sample number;
e) specifications of the continuous casting slab;
Appendix A
(Informative)
Evaluation details for macrostructure and defect in continuous casting slab
A.1 Center segregation
A.1.1 The segregation of class A is distributed continuously; the segregation of class B
is distributed discontinuously (strip segregation with a length of more than 3 mm); the
segregation of class C is distributed in point form. The schematic diagram is shown in
Figure A.1.
A.1.2 When there are two classes of center segregation in the field of view, the
evaluation shall be made based on the principle that the length of the segregated band
with the higher class (class A > class B > class C) exceeds a quarter of the length of the
entire sample. When class A does not exceed 1/4 of the total length of the sample, but
Classes A+B exceed 1/4 of the total length of the sample, evaluate it as class B. See
Table A.1 for the relationship between class and segregation thickness. The thickness
is the average value of 5 points at the most serious part of segregation defects.
A.2 Standard for internal cracks
Class A Class B Class C
Grade Class A segregation thickness t Class B segregation thickness t Class C segregation thickness t
Intermediate cracks, triangular cracks and corner cracks are rated based on the largest
single crack length (see Table A.2). The crack length is the length of a straight line or a
curve.
A.3 Bubbles and Al2O3 inclusions
The evaluation of pinhole bubbles, honeycomb bubbles and Al2O3 inclusions is mainly
based on the size and distribution of the bubbles. The pinhole bubbles and inclusions
are rated by the maximum diameter; the honeycomb bubbles are rated by the maximum
bubble width (Table A.3).
Appendix B
(Normative)
Standard diagrams for macrostructure and defect in continuous casting slab by
etching
Appendix C
(Normative)
Standard diagrams for macrostructure and defect in continuous casting slab by
sulphur print
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of YB/T 4003-2016 be delivered?Answer: The full copy PDF of English version of YB/T 4003-2016 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of YB/T 4003-2016_English with my colleagues?Answer: Yes. The purchased PDF of YB/T 4003-2016_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- YB/T 4003-2016 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version YB/T 4003-2016?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version YB/T 4003-2016 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of YB/T 4003-2016?A step-by-step guide to download PDF of YB/T 4003-2016_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "YB/T 4003-2016".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |