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Position: Chinese Standard in English/JB/T 7025-2004
JB/T 7025-2004   Specification for rotor and shaft forgings for steam turbine (25MW and lower) (English Version)
Standard No.: JB/T 7025-2004 Status:superseded remind me the status change

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Language:English File Format:PDF
Word Count: 4000 words Price(USD):100.0 remind me the price change

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Implemented on:2005-4-1 Delivery: via email in 1 business day
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Standard No.: JB/T 7025-2004
English Name: Specification for rotor and shaft forgings for steam turbine (25MW and lower)
Chinese Name: 25MW以下汽轮机转子体和主轴锻件 技术条件
Chinese Classification: J32    Forging and pressing
Professional Classification: JB    Professional Standard - Machinery
Issued by: Ministry of Railway
Issued on: 2004-10-20
Implemented on: 2005-4-1
Status: superseded
Superseded by:JB/T 7025-2018 Rotor and shaft forgings for 25 MW steam turbine and below-Technical specification
Superseded on:2018-10-1
Superseding:JB/T 7025-1993
Language: English
File Format: PDF
Word Count: 4000 words
Price(USD): 100.0
Delivery: via email in 1 business day
1 Scope This standard specifies the technical requirements, test methods, inspection rules, quality certificate and marking of carbon and low-alloy steel rotor and shaft forgings for steam turbine (25MW or lower). This standard is applicable to the ordering, manufacturing and acceptance of rotor and shaft forgings for steam turbine (25MW and lower). 2 Normative References The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies. GB/T 222 Method of Sampling Steel for Determination of Chemical Composition and Permissible Variations for Product Analysis GB/T 223.3~78 Methods for Chemical Analysis of Iron, Steel and Alloy GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature (GB/T 228-2002, eqv ISO 6892: 1998(E)) GB/T 229 Metallic Materials - Charpy Notch Impact Test (GB/T 229-1994, eqv ISO 148: 1983) GB/T 231.1 Metallic Materials - Brinell Hardness Test - Part 1: Test Method (GB/T231.1-2002.eqv ISO 6506-1: 1999(E)) GB/T 2039 Metallic Materials - Creep and Stress-rupture Test in Tension (GB/T 2039-1997, eqv ISO/DIS 204: 1997) GB/T 6394 Metal-methods for Estimating the Average Grain Size (GB/T 6394-2002, ASTM E112: 1996, MOD) GB/T 10561 Steel - Determination of Content of Non-metallic Inclusion - Micrographic Method Using Standard Diagrams (GB/T 10561-1999, eqv ISO 4967: 1979) JB/T 1581 Ultrasonic Flaw Detection of Rotor and Main Shaft of the Turbine and Turbogenerator JB/T 8468 Magnetic Particle Examination Method for Steel Forgings JB/T 8888 Test Method for Measuring Residual Stresses by the Ring-core Method in Rotor Forgings for Turbine and Generator JB/T 9021 Test Method for Test Stability of Steam Turbine Shafts and Rotor Forgings 3 Ordering Requirements 3.1 The adopted standard, material designation, strength grade, requirements jointly determined by the purchaser and the supplier in provisions of this standard, technical requirements and inspection items beyond requirements of this standard shall be indicated in the order contract or order agreement by the purchaser.
Foreword I 1 Scope 2 Normative References 3 Ordering Requirement 4 Technical Requirements 4.1 Manufacturing Method 4.2 Chemical Composition 4.3 Mechanical Property 4.4 Hardness Uniformity 4.5 Non-destructive Inspection 4.6 Straightness 4.7 Grain Size and Non-metallic Inclusion 4.8 FATT50 4.9 Thermal Stability Test 4.10 High Temperature Endurance Strength 5 Test Methods and Inspection Rules 5.1 Chemical Analysis 5.2 Mechanical Property 5.3 Hardness Uniformity Inspection 5.4 Magnetic Particle Inspection 5.5 Ultrasonic Inspection 5.6 Thermal Stability Test 5.7 Central Hole Inspection 5.8 Grain Size and Non-metallic Inclusion 5.9 Residual Stress Inspection 5.10 Re-test 5.11 Re-heat Treatment 6 Acceptance and Quality Certificate 7 Marking and Packaging
Referred in JB/T 7025-2004:
* GB/T 222-2006 Permissible Tolerances for Chemical Composition of Steel Products
* GB/T 228-2002 Metallic Materials – Tensile Testing at Ambient Temperature
* GB/T 229-2007 Metallic Materials - Charpy Pendulum Impact Test Method
* GB/T 231.1-2009 Metallic materials—Brinell hardness test—Part 1:Test method
* GB/T 2039-2012 Metallic materials—Uniaxial creep testing method in tension
* GB/T 6394-2002 Metal-methods for estimating the average grain size
* GB/T 10561-2005 Steel - Determination of Content of Nonmetallic Inclusions - Micrographic Method Using Standards Diagrams
* JB/T 1581-2014
* JB/T 8468-2014 Magnetic particle testing for steel forgings
* JB/T 8888-1999 Test method for measuring residual stresses by the ring-core method in rotor forgings for turbine and generator
* JB/T 9021-2010 Thermal Stability Test Method of Steam Turbine Main Shafts and Rotor Forgings
Code of China
Standard
JB/T 7025-2004  Specification for rotor and shaft forgings for steam turbine (25MW and lower) (English Version)
Standard No.JB/T 7025-2004
Statussuperseded
LanguageEnglish
File FormatPDF
Word Count4000 words
Price(USD)100.0
Implemented on2005-4-1
Deliveryvia email in 1 business day
Detail of JB/T 7025-2004
Standard No.
JB/T 7025-2004
English Name
Specification for rotor and shaft forgings for steam turbine (25MW and lower)
Chinese Name
25MW以下汽轮机转子体和主轴锻件 技术条件
Chinese Classification
J32
Professional Classification
JB
ICS Classification
Issued by
Ministry of Railway
Issued on
2004-10-20
Implemented on
2005-4-1
Status
superseded
Superseded by
JB/T 7025-2018 Rotor and shaft forgings for 25 MW steam turbine and below-Technical specification
Superseded on
2018-10-1
Abolished on
Superseding
JB/T 7025-1993
Language
English
File Format
PDF
Word Count
4000 words
Price(USD)
100.0
Keywords
JB/T 7025-2004, JB 7025-2004, JBT 7025-2004, JB/T7025-2004, JB/T 7025, JB/T7025, JB7025-2004, JB 7025, JB7025, JBT7025-2004, JBT 7025, JBT7025
Introduction of JB/T 7025-2004
1 Scope This standard specifies the technical requirements, test methods, inspection rules, quality certificate and marking of carbon and low-alloy steel rotor and shaft forgings for steam turbine (25MW or lower). This standard is applicable to the ordering, manufacturing and acceptance of rotor and shaft forgings for steam turbine (25MW and lower). 2 Normative References The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies. GB/T 222 Method of Sampling Steel for Determination of Chemical Composition and Permissible Variations for Product Analysis GB/T 223.3~78 Methods for Chemical Analysis of Iron, Steel and Alloy GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature (GB/T 228-2002, eqv ISO 6892: 1998(E)) GB/T 229 Metallic Materials - Charpy Notch Impact Test (GB/T 229-1994, eqv ISO 148: 1983) GB/T 231.1 Metallic Materials - Brinell Hardness Test - Part 1: Test Method (GB/T231.1-2002.eqv ISO 6506-1: 1999(E)) GB/T 2039 Metallic Materials - Creep and Stress-rupture Test in Tension (GB/T 2039-1997, eqv ISO/DIS 204: 1997) GB/T 6394 Metal-methods for Estimating the Average Grain Size (GB/T 6394-2002, ASTM E112: 1996, MOD) GB/T 10561 Steel - Determination of Content of Non-metallic Inclusion - Micrographic Method Using Standard Diagrams (GB/T 10561-1999, eqv ISO 4967: 1979) JB/T 1581 Ultrasonic Flaw Detection of Rotor and Main Shaft of the Turbine and Turbogenerator JB/T 8468 Magnetic Particle Examination Method for Steel Forgings JB/T 8888 Test Method for Measuring Residual Stresses by the Ring-core Method in Rotor Forgings for Turbine and Generator JB/T 9021 Test Method for Test Stability of Steam Turbine Shafts and Rotor Forgings 3 Ordering Requirements 3.1 The adopted standard, material designation, strength grade, requirements jointly determined by the purchaser and the supplier in provisions of this standard, technical requirements and inspection items beyond requirements of this standard shall be indicated in the order contract or order agreement by the purchaser.
Contents of JB/T 7025-2004
Foreword I 1 Scope 2 Normative References 3 Ordering Requirement 4 Technical Requirements 4.1 Manufacturing Method 4.2 Chemical Composition 4.3 Mechanical Property 4.4 Hardness Uniformity 4.5 Non-destructive Inspection 4.6 Straightness 4.7 Grain Size and Non-metallic Inclusion 4.8 FATT50 4.9 Thermal Stability Test 4.10 High Temperature Endurance Strength 5 Test Methods and Inspection Rules 5.1 Chemical Analysis 5.2 Mechanical Property 5.3 Hardness Uniformity Inspection 5.4 Magnetic Particle Inspection 5.5 Ultrasonic Inspection 5.6 Thermal Stability Test 5.7 Central Hole Inspection 5.8 Grain Size and Non-metallic Inclusion 5.9 Residual Stress Inspection 5.10 Re-test 5.11 Re-heat Treatment 6 Acceptance and Quality Certificate 7 Marking and Packaging
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Keywords:
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