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GB/T 8492-2014 English PDF (GBT8492-2014)

GB/T 8492-2014 English PDF (GBT8492-2014)

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GB/T 8492-2014: Heat-resistant steel and alloy castings for general applications
GB/T 8492-2014
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.80
J 31
Replacing GB/T 8492-2002
Heat-resistant Steel and
Alloy Castings for General Applications
ISSUED ON. SEPTEMBER 3, 2014
IMPLEMENTED ON. JUNE 1, 2015
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
1 Application Scope ... 4 
2 Normative References... 4 
3 Technical Requirements ... 6 
4 Test Methods... 11 
5 Inspection Rules ... 13 
6 Marking, certification, storage and transportation ... 15 
Annex A (Normative) Major Welding Repairs ... 17 
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 8492-2002, Heat-resistant steel and alloy castings for
general applications; compared with GB/T 8492-2002, the main changes of technical
content are as follows.
-- it modifies the specifications of samples for tensile test;
-- it modifies the method for the evaluation of surface quality;
-- it modifies the technical requirements for major welding repairs; and
-- it adds the rounding-off for test results.
This Standard was proposed by and shall be under the jurisdiction of the National
Technical Committee 54 on Foundry of Standardization Administration of China
(SAC/TC 54).
The responsible drafting organizations of this Standard. Tianrun Crankshaft Co., Ltd.
and Anhui Province Mechanical Science Institute.
The contributory drafting organizations of this Standard. Zhejiang Mayang Industries
Co., Ltd., Anhui Ningguo Wear-resistance Fittings Factory, Anhui Ningguo-Xinning
Industries Co., Ltd., Lanzhou Lanshi Foundry Co., Ltd., Jiangxi Copper Corporation
(Dexing) Foundry Co., Ltd. and Beijing University of Technology.
The main drafters of this Standard. Cong Jianchen, Cong Hongri, Li Wenzheng, Jiang
Chunhong, Liu Caixian, Qiu Shixun, Sun Jun, Li Chenghu, Zhou Daohong, Deng
Shiping, Fu Hanguang and Zhou Peichao.
The previous editions replaced by this Standard are as follows.
-- GB/T 8492-1987 and GB/T 8492-2002.
Heat-resistant Steel and
Alloy Castings for General Applications
1 Application Scope
This Standard specifies the technical requirements, test methods, inspection rules
and marking, packaging and storage of heat-resistant steel and alloy castings for
general applications.
This Standard applies to heat-resistant steel and alloy castings for general
engineering applications. Their designation stands for the type of casting
heat-resistant steel and heat-resistant alloy castings widely used under different
heat-resistant conditions in general engineering. Those which are not specified in this
Standard can be specified in purchase contract.
2 Normative References
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition dated applies to this document. For
undated references, the latest edition of the referenced documents (including all
amendments) applies to this Standard.
GB/T 223.3, Methods for Chemical Analysis of Iron, Steel and Alloy – The
Diantipyrylmethane Spectrophotometric Method for the Determination of
Phosphoric Content
GB/T 223.4, Alloyed Steel – Determination of Manganese Content – Potentiometric
or Visual Titration Method
GB/T 223.5, Steel and Iron – Determination of Acid-soluble Silicon and Total
Silicon Content - Reduced Molybdosilicate Spectrophotometric Method
GB/T 223.12, Methods for chemical analysis of iron, steel and alloy – The sodium
carbonate separation – Diphenyl carbazide photometric method for the
determination of chromium content
GB/T 223.22, Methods for Chemical Analysis of Iron, Steel and Alloy – The
Nitroso-R-Salt Spectrophotometric Method for the Determination of Cobalt Content
GB/T 223.23, Iron, Steel and Alloy – Determination of Nickel Content – The
Dimethylglyoxime Spectrophotometric Method
GB/T 223.26, Iron, Steel and Alloy – Determination of Molybdenum Content – The
Thiocyanate Spectrophotometric Method
GB/T 223.37, Methods for Chemical Analysis of Iron, Steel and Alloy – The
Indophenol Blue Photometric Method for the Determination of Nitrogen Content
after Distillation Separation
GB/T 223.40, Iron, Steel and Alloy - Determination of Niobium Content by the
Sulphochlorophenol S Spectrophotometric Method
GB/T 223.66, Methods for Chemical Analysis of Iron, Steel and Alloy – The
Thiocyanate-Chlorpromazine Hydrochloride-Chloroform Extraction Photometric
Method for the Determination of Tungsten Content
GB/T 223.71, Methods for Chemical Analysis of Iron, Steel and Alloy – the
Gravimetric Method after Combustion in the Pipe Furnace for the Determination of
Carbon Content
GB/T 223.72, Iron, Steel and Alloy – Determination of Sulfur Content – Gravimetric
Method
GB/T 228.1-2010, Metallic Materials – Tensile Testing – Part 1. Method of Test at
Room Temperature
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 5613, Designation for Cast Steels
GB/T 6060.1, Roughness Comparison Specimens – Cast Surfaces
GB/T 6414, Castings – System of Dimensional Tolerances and Machining
Allowances
GB/T 8063, Designation of Cast Nonferrous Metals and Their Alloys
GB/T 8170, Rules of Rounding Off for Numerical Values and Expression and
Judgement of Limiting Values
GB/T 15056, Evaluation Method on Cast Surface Roughness
GB/T 20066, Steel and Iron-sampling and Preparation of Samples for the
Determination of Chemical Composition
Use R4 samples specified in GB/T 228.1-2010 for tensile test; carry out the test in
accordance with GB/T 228.1.
4.2.3 Brinell hardness test
Brinell hardness test shall be carried out as specified in GB/T 231.1.
4.3 Surface examination
Casting surface roughness examination shall be carried out as specified in GB/T
15056.
4.4 Geometrical shape and dimension examination
The testing tools, measuring gauges and templates of proper accuracy shall be
selected for the examination of geometrical shapes and dimensions of castings;
coordinate measuring machine or scribing examination can also be used.
4.5 Nondestructive testing
When penetrant testing, magnetic particle testing, radiographic testing or ultrasonic
testing needs to be carried out for castings, the testing positions and methods shall be
agreed by both sides.
5 Inspection Rules
5.1 Inspection procedure
Unless specified otherwise, the inspection of casings shall be carried out by supplier.
5.2 Inspection site
5.2.1 Unless the inspection is agreed by both sides to be carried out on the site of
supplier, the final inspection shall be carried out on the site of supplier.
5.2.2 When supplier does not have necessary means or both sides have any
dispute on the quality of castings, the inspection shall be carried out by a competent
third-party institution which is agreed by both sides.
5.3 Batch division
5.3.1 In accordance with furnaces. castings poured with the same furnace of molten
metal are deemed a batch for heat treatment.
5.3.2 In accordance with quantity or weight. after materials of the same designation
are poured for several furnaces and pass heat treatment for several f...
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