Ungawenza kanjani ukuhlolwa kwe-metallographic ngemuva kokucisha esithandweni sokushisa sokungenisa?

Ukuhlolwa kwe-Metallographic kwezingxenye zensimbi ye-pearlite ductile ngemuva isithando sokushisa sangaphakathi ukucisha kuzokwenziwa ngokuhambisana ne-JB/T 9205-2008 “Isithando sokushisa sokungenisa induction quenching metallographic examination of pearlite ductile iron parts”

1) Ngemuva kokuthi i-pearlitic ductile iron castings icinywa ezithandweni zokushisa ezisezingeni eliphezulu naphakathi nendawo kanye nezinga lokushisa eliphansi (W200T), amasampula e-metallographic azothathwa maphakathi nendawo yokuvala yokungeniswa noma endaweni ecaciswe ubuchwepheshe. izimo.

2) Ngemva kokugaya, isampula ye-metallographic iqoshwe ngesisombululo sotshwala esiqukethe u-2% kuya ku-5% we-nitric acid ngevolumu kuze kube yilapho kuboniswa ungqimba oluqinile oluqinile.

3) Ngokwemiyalelo yokuhlukaniswa kwesakhiwo esincane esiboniswe kuThebula 6.2 kanye neshadi lokuhlukaniswa kwe-microstructure ku-JB/T 9205-2008, yenza ukuhlola kwe-metallographic. Phakathi kwabo, amabanga 3 kuya ku-6 aneziqu; uma kunezidingo ezikhethekile, zizosetshenziswa ngokuhambisana nemibhalo efanele yezobuchwepheshe.

Ithebula 6-2 Incazelo yokuhlukaniswa kwe-microstructure ye-pearlite ductile iron castings ngemva kokucisha esithandweni sokushisa sokungenisa

Izinga/izinga	Izici zenhlangano
1	I-coarse martensite, i-austenite enkulu egciniwe, i-ledeburite, i-spheroidal graphite
2	I-coarse martensite, i-austenite enkulu egciniwe, i-spheroidal graphite
3	I-Martensite, i-austenite enkulu egciniwe, i-graphite eyindilinga
4	I-Martensite, inani elincane le-austenite egciniwe, i-spheroidal graphite
5	I-martensite enhle, i-graphite eyindilinga
6	I-martensite enhle, inani elincane le-ferrite engancibilikisiwe, i-spheroidal graphite
7	I-martensite enhle, inani elincane le-pearlite engancibilikisiwe, i-ferrite engancibilikisiwe, i-graphite eyindilinga
8	I-martensite enhle, inani elikhulu le-pearlite engancibilikisiwe, i-ferrite engancibilikisiwe, i-graphite eyindilinga