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BSI 22/30454444 DC 2022

BSI 22/30454444 DC 2022

$13.70

BS ISO 20431. Heat treatment. Control of quality

Published By Publication Date Number of Pages
BSI 2022 49
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PDF Catalog

PDF Pages PDF Title
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 System for assessment and scoring of requirements and recommendations
4.1 General
12 4.2 General requirements
4.3 Scoring of requirements and recommendations
4.3.1 General
4.3.2 Scoring of requirements
4.3.3 Scoring of recommendations
13 4.4 Assessment of the heat treatment facility
14 5 Requirements and recommendations
5.1 General organisation of a heat treatment facility
5.1.1 Documentation (references GO1 to GO3)
5.1.2 Management responsibility (references GO4 and GO5)
5.1.3 Human resources management (references GO6 to GO10)
15 5.1.4 Infrastructure and equipment management (references GO11 to GO25)
16 5.1.5 Internal audit (reference GO26 and GO27)
5.1.6 Control of nonconforming product (references GO28 to GO36)
17 5.1.7 Continuous improvement (references GO37 and GO38)
5.1.8 Failure Mode, Effect and Criticality Analysis (FMECA) (references GO39 to GO41)
5.1.9 Monitoring plan (references GO42 to GO44)
5.1.10 Preproduction Quality Planning (reference GO45 and GO46)
5.1.11 Statistics: (references GO47 to GO49)
18 5.1.12 Controlling monitoring and recording (references GO50 to GO62)
19 5.2 Contract review and heat treatment conception
5.2.1 Contract review
5.2.2 Heat treatment conception
5.3 Carrying out heat treatments: preparation
5.3.1 General
20 5.3.2 Load preparation
21 5.4 Carrying out heat treatment: Control of the thermal cycle
5.4.1 Temperature drift and heat treatment temperature error (references T1 to T10)
23 5.4.2 Measuring equipment error SAT (System Accuracy Test) (references T11 to T17)
25 5.4.3 Survey of furnace Temperature Uniformity (TUS) (references T18 to T31)
28 5.4.4 Drift of the soak times of the various heat treatment phases (references HTT1 to HTT2)
29 5.5 Mastering of the heat treatment medium
5.5.1 General
5.5.2 Control of carbon-containing atmosphere
30 5.5.3 Control of nitriding, nitrocarburising and derived heat treatment atmospheres
5.5.4 Control of salt bath and drift of treatment medium
5.5.5 Control of operational conditions of surface hardening after induction superficial heating
31 5.5.6 Laser hardening (references L1 to L4)
32 5.5.7 Vacuum or low pressure heat treatment (references V1 to V7)
5.6 Control of cooling
5.6.1 Equipment control and heat treatment reproducibility (references CEQ1 to CEQ3)
5.6.2 Control of cooling parameters (references CPM1 to CPM12)
33 5.7 Control of product
5.7.1 Drift of testing means (references CP1 and CP2)
5.7.2 Non-conforming product (references CP3 to CP5)
5.8 Finishing process
35 Annex A (normative) Equipment calibration and frequency control
37 Annex B (informative) Example of scoring table for requirements and recommendations
43 Annex C (informative) Example of heat treatment facility assessment
44 Annex D (normative) Measuring chain testing methods (SAT – System Accuracy Test)
49 Bibliography

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