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Position: Chinese Standard in English/GB/T 6414-1999
GB/T 6414-1999   Castings - System of Dimensional Tolerances and Machining Allowances (English Version)
Standard No.: GB/T 6414-1999 Status:superseded remind me the status change

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Language:English File Format:PDF
Word Count: 4000 words Price(USD):60.0 remind me the price change

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Implemented on:2000-3-1 Delivery: via email in 1 business day
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Standard No.: GB/T 6414-1999
English Name: Castings - System of Dimensional Tolerances and Machining Allowances
Chinese Name: 铸件 尺寸公差与机械加工余量
Chinese Classification: J31    Casting
Professional Classification: GB    National Standard
ICS Classification: 77.140.80 77.140.80    Iron and steel castings 77.140.80
Issued by: AQSIQ, SAC
Issued on: 1999-9-3
Implemented on: 2000-3-1
Status: superseded
Superseded by:GB/T 6414-2017 Castings - Dimensional Tolerances and Geometrical Tolerances and Machining Allowances
Superseded on:2017-12-29
Abolished on:2017-12-29
Superseding:GB/T 6414-1986 Dimensional tolerances for castings
GB/T 11350-1989 Machining allowances on castings
Language: English
File Format: PDF
Word Count: 4000 words
Price(USD): 60.0
Delivery: via email in 1 business day
1 Scope This standard specifies the tolerance grades and required machining allowance grades for the dimensions of castings. This standard is applicable to the dimensions of cast metals and their alloys produced by various casting manufacturing processes. This standard applies both to general tolerances and/or general required machining allowances given on a drawing and to individual tolerances and/or individual required machining allowances which are shown immediately following a specific dimension. This tolerance system shall be applied when the foundry provides the pattern or die equipment or accepts responsibility for proving it. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. ISO 1302: 1992 "Technical Drawings—Method of Indicating Surface Texture" 3 Definitions For the purposes of this standard, the following definitions apply. 3.1 Basic dimension Dimension of a raw casting before machining (see Figure 1), the necessary machining allowance being included (see Figure 2). 3.2 Dimensional tolerance The allowable variation of dimension. The tolerance is equal to the absolute value of the algebraic difference between the maximum limit of size and the minimum limit of size and it's also equal to the absolute value of the algebraic difference between the upper deviation and the lower deviation. 3.3 Mismatch Relative displacement of surfaces of a casting owing to inaccuracies in the constituent parts of multipart moulds (see Figure 3) 3.4 Required machining allowance, RMA On raw castings, a material allowance to permit the removal of the effects of casting on the surface by subsequent machining and to allow the achievement of the desired surface texture and the necessary accuracy of dimension. With cylindrical features or machining on both sides, the RMA is taken into account twice (see Figure 5 and Figure 6). 3.5 Draft angle (taper) Additional slope of shaping elements (e.g. on enveloping surfaces) parallel to the pattern drawing direction necessary to facilitate the removal of a casting from a mould or die, or a mold core from a core box 3.6 Wall thickness The wall thickness refers to the thickness of the casting wall constructed between casting moulds, between casting mould and mold core as well as between the mold cores
Contents Foreword I ISO Foreword II Introduction III 1 Scope 2 Normative References 3 Definitions 4 Dimensioning 5 Tolerance Grades 6 Mismatch 7 Wall Thickness 8 Tapered Features 9 Position of Tolerance Zone 10 Required Machining Allowance, RMA 11 Indication on Drawings Appendix A (Informative) Casting Tolerances Appendix B (Informative) Required Machining Allowance (RMA) Appendix C (Informative) Bibliography
GB/T 6414-1999 is referred in:
* GB/T 1348-2009 Spheroidal graphite iron castings
* GB/T 5680-2010 Austenitic manganese steel castings
* GB/T 9440-2010 Malleable iron castings
* GB/T 8492-2002 Heat-resistant steel and alloy castings for general applications
* GB/T 6967-2009 Martensitic stainless steel castings for general engineering application
* JB/T 6887-2004 Technical Condition of Cast Iron for Fans Blower and Compressors
* GB 24911-2010 Bowl-coupler type steel tube scaffolding member
* GB/T 9439-2010 Grey Iron Castings
* DL/T 5018-2004 Specification for Manufacture Erection and Acceptance of Steel Ga
* GB/T 5680-2010 Austenitic manganese steel castings
* GB/T 9440-2010 Malleable iron castings
* GB 24911-2010 Bowl-coupler type steel tube scaffolding member
* GB/T 9439-2010 Grey Iron Castings
* GB/T 6967-2009 Martensitic stainless steel castings for general engineering application
* GB/T 1348-2009 Spheroidal graphite iron castings
* GB/T 6967-2009 Martensitic stainless steel castings for general engineering application
* GB/T 15114-2009 Aluminum alloy die castings
* GB/T 2100-2002 Corrosion-resistant steel castings for general applications
* JB/T 3595-2002 Valves for power station-general requirements
* JB/T 5000.5-2007 Heavy mechanical general techniques and standards-Part 5:Non-ferrous cating
* CJ/T 414-2012 Technical Requirements of Aluminum-steel Conductor Rail for Urban Rail Transit
* GB/T 8263-1999 Abrasion-Resistant White Iron Castings
* GB/T 11352-2009 Carbon steel castings for general engineering purpose
* JB/T 6888-2004 Technical Condition of Cast Steel Used for Fan Blower and Compressor
* GB/T 9438-1999 Aluminum Alloy Castings
* GB/T 13295-2013 Ductile iron pipes,fittings and accessories for water or gas applications
* JB/T 8532-2008 Pulse-bag filter
* GB/T 12229-2005 General purpose industrial valve - Specification of spheroidal graphite iron castings
* DL/T 680-2015 Specification for electric power industry wear-resistant pipes
* DL/T 681-2012 Specification for Wear Resistant Parts of Coal Mill in Coal-fired Power Plants
* GB/T 12225-2005 General purpose industrial valves - Specification of copper alloy castings
* TB/T 1853-2006 Technical specification of steel bearings for railway bridge
* TB/T 447-2004 Technical specification for the solid manganese steel frogs
* GB/T 14408-2014 Low Alloy Steel Castings for General Engineering and Structural Purposes
*TB/T 456-2008 Couplers and Coupler Yokes for Railway Locomotive and Rolling Stock
*TB/T 1465-2015 General Specification of Spheroidal Graphite Castings for Rolling Stock
*TB/T 46-2015 Railway Vehicle Center Plate
*TB/T 2943.2-2007 Couplers components for railway locomotive and vehicle Part 2:Specification of anticreep top locklift assembly for No.13A type coupler
*TB/T 2813-2015 Friction Damper Wedge for Freight Car
*JB/T 5000.4-2007 Heavy Mechanical General Techniques and Standards - Part 4: Iron Casting
*JB/T 5000.6-2007 Heavy Mechanical General Techniques and Standards - Part6: Steel Castings
*GB/T 31204-2014 Carbon Steel Investment Casting
*TB/T 456-2016 Couplers and coupler yokes for railway rolling stock
*TB/T 3217-2009 Semi-spherical Angle Cock for Locomotive
*TB/T 3144-2006 General technical specifications of variable load equipment for railway freight car
*TB/T 2951-2009 Air Controlling Valve of Railway Wagon
*TB/T 3012-2016 Cast steel bolster and side frame for railway freight car
*SH/T 3113-2016 Technical specification for burners of tubular heater in petrochemical industry
*JB/T 10264-2014 Crown and Band Castings for Francis Turbine Welded Runner
*JB/T 7248-2008 Technical specification for low temperature service steel casting for valves
Code of China
Standard
GB/T 6414-1999  Castings - System of Dimensional Tolerances and Machining Allowances (English Version)
Standard No.GB/T 6414-1999
Statussuperseded
LanguageEnglish
File FormatPDF
Word Count4000 words
Price(USD)60.0
Implemented on2000-3-1
Deliveryvia email in 1 business day
Detail of GB/T 6414-1999
Standard No.
GB/T 6414-1999
English Name
Castings - System of Dimensional Tolerances and Machining Allowances
Chinese Name
铸件 尺寸公差与机械加工余量
Chinese Classification
J31
Professional Classification
GB
ICS Classification
Issued by
AQSIQ, SAC
Issued on
1999-9-3
Implemented on
2000-3-1
Status
superseded
Superseded by
GB/T 6414-2017 Castings - Dimensional Tolerances and Geometrical Tolerances and Machining Allowances
Superseded on
2017-12-29
Abolished on
2017-12-29
Superseding
GB/T 6414-1986 Dimensional tolerances for castings
GB/T 11350-1989 Machining allowances on castings
Language
English
File Format
PDF
Word Count
4000 words
Price(USD)
60.0
Keywords
GB/T 6414-1999, GB 6414-1999, GBT 6414-1999, GB/T6414-1999, GB/T 6414, GB/T6414, GB6414-1999, GB 6414, GB6414, GBT6414-1999, GBT 6414, GBT6414
Introduction of GB/T 6414-1999
1 Scope This standard specifies the tolerance grades and required machining allowance grades for the dimensions of castings. This standard is applicable to the dimensions of cast metals and their alloys produced by various casting manufacturing processes. This standard applies both to general tolerances and/or general required machining allowances given on a drawing and to individual tolerances and/or individual required machining allowances which are shown immediately following a specific dimension. This tolerance system shall be applied when the foundry provides the pattern or die equipment or accepts responsibility for proving it. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. ISO 1302: 1992 "Technical Drawings—Method of Indicating Surface Texture" 3 Definitions For the purposes of this standard, the following definitions apply. 3.1 Basic dimension Dimension of a raw casting before machining (see Figure 1), the necessary machining allowance being included (see Figure 2). 3.2 Dimensional tolerance The allowable variation of dimension. The tolerance is equal to the absolute value of the algebraic difference between the maximum limit of size and the minimum limit of size and it's also equal to the absolute value of the algebraic difference between the upper deviation and the lower deviation. 3.3 Mismatch Relative displacement of surfaces of a casting owing to inaccuracies in the constituent parts of multipart moulds (see Figure 3) 3.4 Required machining allowance, RMA On raw castings, a material allowance to permit the removal of the effects of casting on the surface by subsequent machining and to allow the achievement of the desired surface texture and the necessary accuracy of dimension. With cylindrical features or machining on both sides, the RMA is taken into account twice (see Figure 5 and Figure 6). 3.5 Draft angle (taper) Additional slope of shaping elements (e.g. on enveloping surfaces) parallel to the pattern drawing direction necessary to facilitate the removal of a casting from a mould or die, or a mold core from a core box 3.6 Wall thickness The wall thickness refers to the thickness of the casting wall constructed between casting moulds, between casting mould and mold core as well as between the mold cores
Contents of GB/T 6414-1999
Contents Foreword I ISO Foreword II Introduction III 1 Scope 2 Normative References 3 Definitions 4 Dimensioning 5 Tolerance Grades 6 Mismatch 7 Wall Thickness 8 Tapered Features 9 Position of Tolerance Zone 10 Required Machining Allowance, RMA 11 Indication on Drawings Appendix A (Informative) Casting Tolerances Appendix B (Informative) Required Machining Allowance (RMA) Appendix C (Informative) Bibliography
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Keywords:
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