17-4PH Ishidi Ledatha Yezinto Ezibalulekile
Izikophu
I-stainless material 17-4 PH ibonakala ngamandla okukhiqiza okuphezulu, ukumelana nokugqwala okuhle nokumelana nokugqoka okuphezulu. I-17-4 PH ingenye yezinsimbi ezibaluleke kakhulu ezingaqiniswa. Kuyefana ngokokuhlaziya ngezinto 1.4548 kanye 1.4542.
Ukusetshenziswa ebangeni lokushisa eliphansi kungenzeka nge-Condition H1150 ne-H1025. Amandla womthelela we-notched amahle kakhulu anikezwa emazingeni okushisa amancane.
Ngenxa yezakhiwo ezinhle zemishini nokumelana nokugqwala, impahla ilungele ukusetshenziswa ezindaweni zasolwandle, kodwa isengozini yokugqwala emifantwini emanzini olwandle amile.
I-17-4PH yaziwa kakhulu nge-AISI 630.
I-17-4PH yezinto ezibonakalayo isetshenziswa embonini yamakhemikhali, imboni yezinkuni, umkhakha we-offshore, ekwakheni imikhumbi, kubunjiniyela bemishini, embonini kawoyela, embonini yamaphepha, embonini yezemidlalo. Imboni yezokungcebeleka futhi njengenguqulo ephinde yancibilika (ESU) emoyeni kanye ne-Aerospace.
Uma izakhiwo zemishini kanye nokumelana nokugqwala kwezinsimbi ze-martensitic kunganele, i-17-4PH ingasetshenziswa.
17-4PH Ukulanda Ishidi Ledatha Yezinto Ezibalulekile
Izici
| Kuyasebenziseka | kuhle |
| Ukushisela | kuhle |
| Izakhiwo zemishini | kuhle kakhulu |
| Ukumelana nokugqwala | kuhle |
| Ukusebenziseka kalula | embi kuya emaphakathi |
Inzuzo
Isici esisodwa esikhethekile sento engu-17-4 PH ukufaneleka kwamazinga okushisa aphansi kanye nokusebenza okufika ku-approx. 315°C.
Ukuqamba:Ukubunjwa kwempahla kwenzeka ebangeni lokushisa lika-1180 ° C kuya ku-950 ° C. Ukuqinisekisa ukucwengwa okusanhlamvu, ukupholisa ekamelweni lokushisa kwenziwa ngomoya.
Ukushisela:Ngaphambi kokuthi impahla engu-17-4 PH ingashiselwa, kufanele kucatshangelwe isimo sesisekelo sempahla. Ngefomu elizinzile, ithusi likhona endabeni. Lokhu kukhuthaza ukungaqhekeki okushisayo.
Ukuze ukwazi ukwenza izimo zokushisela ezidingekayo ziyadingeka. Ama-undercuts noma ama-welding defects angaholela ekwakhiweni kwe-notch. Lokho kufanele kugwenywe. Ukuze uvimbele ukwakheka kokuqhekeka kwengcindezi, izinto ezisetshenziswayo kufanele ziphinde zibe ngaphansi kwesixazululo sokuguga okulandelanayo phakathi nesikhathi esifushane kakhulu ngemuva kokushisela.
Uma kungekho ukwelashwa okwenziwa ngemva kokushisa, amanani emishini-zobuchwepheshe ku-weld seam kanye nendawo ethintekile ekushiseni ezintweni eziyisisekelo zingahluka kakhulu.
Ukumelana nokugqwala:lapho izakhiwo zemishini nokumelana nokugqwala kwezinsimbi ze-martensitic kunganele, i-17-4 PH ifanele ukusetshenziswa ezindaweni zasolwandle. Inenhlanganisela yezinto ezinhle kakhulu zemishini kanye nokumelana nokugqwala.
Emanzini olwandle amile, i-17-4 PH isengozini yokugqwala emifantwini. Lokhu kudinga ukuvikeleka okwengeziwe.
Ukwenza imishini:I-17-4 PH ingenziwa ngomshini esimweni esiqinile futhi esinesixazululo. Ngokuya ngobulukhuni, ukuhleleka kuyahlukahluka, lokhu kuzoxhomeka esimweni.
Ukwelashwa kokushisa
Phakathi kuka-1020°C no-1050°C into engu-17-4 PH ifakwe isixazululo. Lokhu kulandelwa ukupholisa okusheshayo - amanzi, amafutha noma umoya. Lokhu kuncike esigabeni esiphambanayo sento.
Ukuqinisekisa ukuguqulwa okuphelele kusuka ku-austenite kuya ku-martensite, impahla kumele ibe nekhono lokupholisa ekamelweni lokushisa.
Iyacubungula
| Ukupholisha | kungenzeka |
| Ukubumba okubandayo | akunakwenzeka |
| Ukucutshungulwa komumo | kungenzeka, kuye ngobulukhuni |
| Ukutshuza okubandayo | akunakwenzeka |
| Ifomu lamahhala kanye ne-drop forging | kungenzeka |
Izakhiwo Zomzimba
| Ukuminyana ku-kg/dm3 | 7,8 |
| Ukumelana nogesi ku-20°C ku-(Ω mm2)/m | 0,71 |
| Ukukwazi ukuzibuthe | etholakalayo |
| I-Thermal conductivity ku-20°C ku-W/(m K) | 16 |
| Umthamo wokushisa othize ku-20°C ku-J/(kg K) | 500 |
Bala isisindo sento edingekayo ngokushesha »
Ukwakheka kwamakhemikhali
| 17-4PH | C | Si | Mn | P | S | Cr | Mo | Ni | V |
| imiz. | bis | bis | bis | bis | bis | 15 | bis | 3 |
|
| ubuningi. | 0,07 | 0,7 | 1,0 | 0,04 | 0,03 | 17,5 | 0,6 | 5 |
|
| 17-4PH | Al | Cu | N | Nb | Ti | Sonstiges |
| imiz. |
| 3,0 |
| 5xC |
|
|
| ubuningi. |
| 5,0 |
| 0,45 |
|
|
Kukhona kusitoki
Ifulethi, ifojiwe, isixazululo sifakiwe futhi sikhishwe ngaphandle
Izinzuzo ze-saw cut
Ukucutshungulwa ngesaha kuwukucutshungulwa komshini kwezinto, okuholela ekuguquguqukeni okungahlosiwe okuphansi kakhulu nokwanda kokuqina kwesakhiwo esikhona, njengokusika okushisayo.
Ngakho-ke, umsebenzi owenziwe ngomshini unesakhiwo se-homogeneous ngisho nasemaphethelweni, angashintshi ekuqhubekeni kwezinto.
Lesi simo sivumela ukuqedwa ngokushesha kwendawo yokusebenza ngokugaya noma ukubhoboza . Ngakho-ke akudingekile ukuba anneal impahla noma ukwenza ukuhlinzwa okufanayo kusengaphambili.
