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GB/T 32247-2015Ferritic ductile iron castings suitable for low temperature service (English PDF)

低温铁素体球墨铸铁件

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 10, 2015

Implementation date

July 1, 2016

Scope

GB/T 32247-2015 is the English-translated version of 低温铁素体球墨铸铁件.

GB/T 32247-2015 is the Chinese standard "Ferritic ductile iron castings suitable for low temperature service".

Its scope clause reads: This standard specifies the temperature in the production method of ferritic ductile iron -40 °C ~ -60 °C, the chemical composition and heat treatment, Technical requirements, sampling, test methods, inspection rules, inspection and other castings, quality records, marking and quality certification, rust, packaging, transport And storage requirements.

This standard applies to sand or sand equivalent thermal conductivity and other low-temperature mold casting ferritic ductile iron, other casting methods Production of low-temperature ferritic ductile iron can refer to use.

Its clauses include production methods, chemical composition and heat treatment.

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Document preview — GB/T 32247-2015

National Standard of the People's Republic of China

ICS
77.140.80
Classification
J 31

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

  • Foreword
  • 1 Scope
  • 2 Normative references
  • 3 Terms and definitions

1 Scope

This standard specifies the temperature in the production method of ferritic ductile iron -40 °C ~ -60 °C, the chemical composition and heat treatment,

Technical requirements, sampling, test methods, inspection rules, inspection and other castings, quality records, marking and quality certification, rust, packaging, transport

And storage requirements.

This standard applies to sand or sand equivalent thermal conductivity and other low-temperature mold casting ferritic ductile iron, other casting methods

Production of low-temperature ferritic ductile iron can refer to use.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

RT Test Method. Test Part 1 GB/T 228.1 metallic materials tensile

GB/T 229 metal Charpy pendulum impact test method

GB/T 231.1 metallic materials Brinell hardness test - Part 1. Test methods

GB/T 1348 Ductile Iron

GB/T 5677 Steel Castings radiographic testing

GB/T 6060.1 Roughness comparison specimens - Cast surfaces

GB/T 6414 casting dimensional tolerances and machining allowances

GB/T 9441 ductile iron metallography

GB/T 9444 steel castings - Magnetic particle testing

GB/T 11351 casting weight tolerance

GB/T 18851.1 destructive testing - Penetrant testing - Part 1. General

3 production methods, chemical composition and heat treatment

3.1

cryogenic method for producing ferritic ductile iron, chemical composition and heat treatment process, the supplier may decide, but should meet this standard

Mechanical properties required targets. Chemical composition is not cast as a basis for acceptance.

3.2

When the demand side, the chemical composition of the casting, heat treatment methods have special requirements agreed to by both parties.

4. Technical Requirements

Grades and Mechanical Properties of Materials 4.1

Table 4.1.1 cryogenic material grades ferritic Ductile Iron 1 to Table 4.

4.1.2

QT350-22L, QT400-18L single-cast specimens mechanical properties are shown in Table 1.

4.1.3

QT350-22L, impact QT400-18L single-cast sample absorb energy in Table 2.

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

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