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JB/T 7349-2014Stainless steel blade castings for hydraulic turbines (English PDF)

水轮机不锈钢叶片铸件

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

May 6, 2014

Implementation date

October 1, 2014

Scope

JB/T 7349-2014 is the English-translated version of 水轮机不锈钢叶片铸件.

JB/T 7349-2014 is the Chinese standard "Stainless steel blade castings for hydraulic turbines".

Its scope clause reads: This standard specifies the ordering requirements, manufacturing process, technical requirements, inspection rules and test methods, quality certificate, marking and packaging of stainless steel blade castings for welded construction runner for Francis hydraulic turbines, axial-flow hydraulic turbines and tubular hydraulic turbines.

This standard is applicable to the ordering, manufacturing and inspection of stainless steel blade castings for welded construction runner for Francis hydraulic turbines, axial-flow hydraulic turbines and tubular hydraulic turbines in various specifications, and is applied as the basis for the suppliers' blank delivery or delivery after rough grinding or rough machining. Its clauses include order requirements; manufacturing process.

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Document preview — JB/T 7349-2014

National Standard of the People's Republic of China

ICS: 77.140.80
Replacing: JB/T 7349-2002

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Foreword
1 Scope
2 Normative references
3 Order requirements
4 Manufacturing process
4.1 Smelting
4.2 Casting
4.3 Heat treatment
4.4 Repair welding
4.5 Machining
5 Technical requirements
5.1 Chemical compositions
5.2 Mechanical properties
5.3 Quality of castings
6 Inspection rules and test methods
6.1 Chemical composition analysis
6.2 Mechanical property test
6.3 Evaluation of surface roughness
6.4 Non-destructive testing
6.5 Retest
6.6 Re-heat treatment
7 Quality certificate
8 Marking and packaging

1 Scope

This standard specifies the ordering requirements, manufacturing process, technical requirements, inspection rules and test methods, quality certificate, marking and packaging of stainless steel blade castings for welded construction runner for Francis hydraulic turbines, axial-flow hydraulic turbines and tubular hydraulic turbines.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced documents (including any amendments) applies.

GB/T 222 Permissible tolerances for chemical composition of steel products

GB/T 223 (All parts) Methods for chemical analysis of iron, steel and alloy

GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature

GB/T 229 Metallic materials - Charpy pendulum impact test method

GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method

GB/T 6060.1 Roughness comparison specimens - Cast surfaces

GB/T 7233.1 Steel castings - Ultrasonic examination - Part 1: Steel castings for general purposes

GB/T 9443 Penetrant testing for steel castings

GB/T 9444 Magnetic particle testing for steel castings

GB/T 11352 Carbon steel castings for general engineering purpose

GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition

3 Order requirements

3.1

The purchaser shall indicate the applicable standard(s), casting name, material designation, order quantity and supply condition, the corresponding technical requirements and inspection items specified by the supplier and the purchaser, and other additional instructions beyond those required by this standard in the order contract or order agreement.

3.2

The purchaser shall provide the order drawings and IGS documents jointly approved by both parties, and indicate the product dimensions, tolerances, surface roughness requirements, number, position and size of test blocks, etc.

4 Manufacturing process

4.1 Smelting

The steel for blades shall be smelted by an electric arc furnace or ladle refining furnace, and may also be smelted with the methods confirmed by the supplier and the purchaser.

4.2 Casting

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 223.16

Cited by

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GB/T 32255-2025|GB/T 12230-2023|NB/T 10828-2021|NB/T 10829-2021|NB/T 20007.19-2021|NB/T 20007.23-2021

Editions of JB/T 7349

Edition	Title	Revision	Status
JB/T 7349-2014	Stainless steel blade castings for hydraulic turbines	current edition	Current
JB/T 7349-2002	Stainless steel blade castings for hydraulic turbines	previous edition	Superseded

This page sells the current edition, JB/T 7349-2014. Earlier editions are listed for reference only.

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