Steel castings for rolling stock - Part 1: Technical requirements and inspection
1 Scope
This part of TB/T 2942 specifies the terms and definitions, technical requirements, inspection methods and rules, recording, marking and quality certificate of steel castings for rolling stock.
This part is applicable to the manufacturing and inspection of Grade A steel, Grade B steel, Grade B+ steel, Grade C steel, Grade D steel and Grade E steel castings (hereinafter referred to as low-alloy steel castings) for rolling stock and carbon steel castings for general engineering purpose (hereinafter referred to as carbon steel castings).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 223 Methods for chemical analysis of iron, steel and alloy
GB/T 225 Steel - Hardenability test by end quenching (Jominy test)
GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 229-2007 Metallic materials - Charpy pendulum impact test method
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 5117-2012 Covered electrodes for manual metal arc welding of non-alloy and fine grain steels
GB/T 5482 Test method of metallic materials - Dynamic tear
GB/T 5611 Foundry terminology
GB/T 5678 Sampling methods of spectrochemical analysis for cast alloys
GB/T 6414-2017 Castings - Dimensional tolerances and geometrical tolerances and machining allowances
GB/T 6803 Test method for drop-weight test to determine nil-ductility transition temperature of ferritic steels
GB/T 7232 Terminology of metal heat treatment
GB/T 9444 Magnetic particle testing for steel castings
GB/T 9448 Safety in welding and cutting
GB/T 9452-2012 Testing method for working zone of heat treatment furnace
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content - Infrared absorption method after combustion in an induction furnace (routine method)
GB/T 32533-2016 Covered electrodes for manual metal arc welding of high-strength steels
TB/T 2942.2 Steel castings for rolling stock - Metallographic atlas for metallographic microstructure examination
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 5611 and GB/T 7232 apply.
4 Technical requirements
4.1 General requirements
The molten steel shall be melted by electric arc furnace and induction furnace. Unless otherwise specified, the supply state shall be as follows:
a) Grade A steel castings shall be supplied in normalized or annealed state;
b) Grade B and Grade B+ steel castings shall be supplied in normalized or normalized + tempered state;
c) Grade C steel castings shall be supplied in normalized + tempered or quenched + tempered state;
d) Grade D and E steel castings shall be supplied in quenched + tempered state;
e) Generally, carbon steel castings are supplied in normalized or normalized + tempered state, or in a state determined through negotiation between the supplier and the purchaser.
4.2 Chemical composition
4.2.1 General requirements
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Technical requirements 5 Inspection methods and rules 6 Recording, marking and quality certificate Annex A (Informative) Reference index values for mechanical properties of low-alloy steel castings Annex B (Normative) Inspection of non-metallic inclusions in cast steel Annex C (Normative) Repair welding of defects in steel castings Annex D (Normative) Keel block Annex E (Normative) Tensile specimen of low-alloy steel castings
Steel castings for rolling stock - Part 1: Technical requirements and inspection
1 Scope
This part of TB/T 2942 specifies the terms and definitions, technical requirements, inspection methods and rules, recording, marking and quality certificate of steel castings for rolling stock.
This part is applicable to the manufacturing and inspection of Grade A steel, Grade B steel, Grade B+ steel, Grade C steel, Grade D steel and Grade E steel castings (hereinafter referred to as low-alloy steel castings) for rolling stock and carbon steel castings for general engineering purpose (hereinafter referred to as carbon steel castings).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 223 Methods for chemical analysis of iron, steel and alloy
GB/T 225 Steel - Hardenability test by end quenching (Jominy test)
GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 229-2007 Metallic materials - Charpy pendulum impact test method
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 5117-2012 Covered electrodes for manual metal arc welding of non-alloy and fine grain steels
GB/T 5482 Test method of metallic materials - Dynamic tear
GB/T 5611 Foundry terminology
GB/T 5678 Sampling methods of spectrochemical analysis for cast alloys
GB/T 6414-2017 Castings - Dimensional tolerances and geometrical tolerances and machining allowances
GB/T 6803 Test method for drop-weight test to determine nil-ductility transition temperature of ferritic steels
GB/T 7232 Terminology of metal heat treatment
GB/T 9444 Magnetic particle testing for steel castings
GB/T 9448 Safety in welding and cutting
GB/T 9452-2012 Testing method for working zone of heat treatment furnace
GB/T 11351-2017 Mass tolerances for castings
GB/T 15056 Casting surface roughness - Appraising method
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content - Infrared absorption method after combustion in an induction furnace (routine method)
GB/T 20125 Low-alloy steel - Determination of multi-element contents - Inductively coupled plasma atomic emission spectrometric method
GB/T 32533-2016 Covered electrodes for manual metal arc welding of high-strength steels
TB/T 2942.2 Steel castings for rolling stock - Metallographic atlas for metallographic microstructure examination
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 5611 and GB/T 7232 apply.
4 Technical requirements
4.1 General requirements
The molten steel shall be melted by electric arc furnace and induction furnace. Unless otherwise specified, the supply state shall be as follows:
a) Grade A steel castings shall be supplied in normalized or annealed state;
b) Grade B and Grade B+ steel castings shall be supplied in normalized or normalized + tempered state;
c) Grade C steel castings shall be supplied in normalized + tempered or quenched + tempered state;
d) Grade D and E steel castings shall be supplied in quenched + tempered state;
e) Generally, carbon steel castings are supplied in normalized or normalized + tempered state, or in a state determined through negotiation between the supplier and the purchaser.
4.2 Chemical composition
4.2.1 General requirements
Contents of TB/T 2942.1-2020
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
5 Inspection methods and rules
6 Recording, marking and quality certificate
Annex A (Informative) Reference index values for mechanical properties of low-alloy steel castings
Annex B (Normative) Inspection of non-metallic inclusions in cast steel
Annex C (Normative) Repair welding of defects in steel castings
Annex D (Normative) Keel block
Annex E (Normative) Tensile specimen of low-alloy steel castings
