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1 Scope 2
1.1 General 2
1.2 Alloys 2
1.3 Casting processes 2
2 Explanatory notes 2
2.1 Porosity 2
2.1.1 Shrinkage cavities 2
2.1.2 Gas porosity 3
2.2 Other flaws 3
3 Possible effects of porosity 3
3.1 Static strength 3
3.2 Dynamic strength 4
3.3 General leak tightness and mating surfaces 4
3.4 Surface and heat treatment 4
4 Evaluation of casting porosity 4
5 Description of porosity 5
5.1 Pore classes 5
5.1.1 Pore class designation 5
5.1.2 Reference surfaces for the pore classes 6
5.1.3 Porosity class determination 7
5.1.4 Examples for pore class designations 7
5.2 Test options 8
5.2.1 Radiography test with image intensifier 8
5.2.2 Ultrasonic test 8
5.2.3 Leak tightness test 8
5.2.4 Visual test 9
5.2.5 Density test 9
5.2.6 Metallographic test and section test 9
6 Drawing notes 9
6.1 Collective notes 9
6.2 Notes for defined areas 9
7 References, standards, guidelines 10
Annex 1 Definition of further flaws 12
Annex 1.1 Cold flow marks 12
Annex 1.2 Build-up (stick marks) 12
Annex 1.3 Draw marks 12
Annex 1.4 Burrs 12
Annex 1.5 Hot cracks 12
Annex 1.6 Further characteristics of cast components 12
Annex 2 Microstructure examples of pore classes 0, 4 and 8 13
Annex 3 Examples of different porosity in general and in dependence on the
reference surfaces (informative)
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发表于 2017-8-21 15:57:35
发表于 2017-8-21 17:16:53
发表于 2017-8-22 08:22:23
发表于 2022-3-31 09:09:39
