GB/T 9452-2012 in English

《GB/T 9452-2012热处理炉有效加热区测定方法》由TC75（全国热处理标准化技术委员会）归口，主管部门为国家标准化管理委员会。

1 Scope

This Standard specifies technical requirements and method for quenching and tempering of steel parts heated in the furnace.
This Standard is not applicable to quenching method for surface heating.

2 Normative References

The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties coming to an agreement based on this Standard are encouraged to investigate whether the latest editions of the standards apply. For undated references, the latest editions of the normative documents referred to apply.
GB/T 224 Determination of Depth of Decarburization of Steel
GB/T 230.1 Metallic Rockwell Hardness Test - Part 1: Test Method (Scales A, B, C, D, E, F, G, H, K, N, T)(GB/T 230.1-2004，ISO 6508-1：1999，MOD)
GB/T 231.1 Metallic Materials-Brinell Hardness Test-Part 1: Test Method(GB/T 231.1-2002，eqv ISO 6506-1：1999)
GB/T 699 Quality Carbon Structural Steels
GB/T 1182 Geometrical Product Specifications(GPS) - Geometrical Tolerancing - Tolerances of Form Orientation Location and Run-Out(GB/T 1182-2008，ISO 1101：2004，IDT)
GB/T 1220 Stainless Steel Bars
GB/T 1221 Heat-resistant Steel Bars
GB/T 1222 Spring Steel
GB/T 1298 Carbon Tool Steels
GB/T 1299 Alloy Tool Steel
GB/T 3077 Alloy Structure Steels
GB/T 4340.1 Metallic Materials - Vickers Hardness Test - Part 1：Test Method(GB/T 4340.1-1999，eqv ISO 6507-1：1997)
GB/T 4341 Metallic Materials - Shore Hardness Test
GB/T 5216 Structural Steels Subject to End-quench Hardenability Requirements
GB 6394 Metal-methods for Estimating the Average Grain Size
GB/T 7232 Terminology of Metal Heat Treatment
GB/T 9452 Testing Method for Working Zone of Heat Treatment Furnace
GB/T 9943 High Speed Tool Steels (GB/T 9943-2008，ISO 4957：1999，NEQ)
GB/T 11352 Carbon Steel Castings for General Engineering Purpose (GB/T 11352-1989，neq ISO 3755：1991)
GB/T 12603 Classifications and Designations for Metal Heat Treatment
GB/T 13298 Metal-inspection Method of Microstructure
GB/T 13324 Terminology of Heat Treatment Equipment
GB 15735 Requirements for the Safety and Health in Production Process of Metal Heat Treatment
GB/T 16923 Normalizing and Annealing of Steel Parts
GB/T 17358 Power Consumption Quota and its Counting and Testing Method in Heat Treating Production
GB/T 18254 High-carbon Chromium Bearing Steel
GB/T 19944 Fuel Consumption Quota and its Counting and Testing Method for Heat Treatment Production
JB/T 6050 Generalization of Hardness Test for Heat Treated Iron and Steel Parts
JB/T 7530 General Technical Requirements for Argon Nitrogen and Hydrogen Gases Used in Heat Treatment
JB/T 9210 Vacuum Heat Treatment

3 Terms and Definitions

For the purpose of this Standard, terms and definitions established in GB/T 7232, GB/T 13324 and GB/T 16923 apply.

4 Classification and Codes of Quenching and Tempering Technology

Contents
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification of Heat Treatment Furnace by Temperature Uniformity
5 Implementation Conditions and Testing Period
6 Testing Device
7 Testing Method
8 Evaluation of Working Zone
9 Testing Report
10 Management