Nguwuphi uMahluko phakathi kwe-17-4PH kunye nezinye iiNsimbi zokuVula-ziQinisa (PH)?

Nguwuphi uMahluko phakathi kwe-17-4PH kunye nezinye iiNsimbi zokuVula-ziQinisa (PH)?

Intshayelelo

I-precipitation-hardening steels stainless (PH steels) yiklasi ye-alloys-resistant-resistant alloys edibanisa amandla e-martensitic kunye ne-austenitic steels kunye ne-corrosion resistance resistance. Phakathi kwabo,I-17-4PH insimbi engenasicingokungathandabuzekiyo yeyona isetyenziswa kakhulu ngenxa yeempawu zayo ezikhethekileyo zomatshini kunye nokulula kokwenziwa. Kodwa ithelekisa njani namanye amabanga e-PH afana ne-15-5PH, i-13-8Mo, i-17-7PH, kunye ne-Custom 465? Eli nqaku lintywila nzulu kumahluko wokubunjwa, unyango lobushushu, iipropathi zoomatshini, ukuxhathisa umhlwa, kunye nokusetyenziswa.

Amagqabantshintshi ngeNgxobhozo-Ukuqina kweentsimbi ezingatyiwayo

Iintsimbi zokuqina kwemvula zifumana amandla azo ekwakhiweni kwemvula entle kwi-matrix yentsimbi ngexesha lokunyanga ubushushu obudala. Ezi ntsimbi zohlulwe zibe ziindidi ezintathu eziphambili:

1. Iintsimbi ze-PH zeMartensitic(umz.,17-4PH, 15-5PH)
2. Semi-austenitic PH iintsimbi(umz., 17-7PH)
3. iintsimbi PH Austenitic(umz., A286)

Udidi ngalunye lunika indibaniselwano eyodwa yeepropati ezilungiselelwe iimfuno ezithile zamashishini.

I-17-4PH (UNS S17400): Umgangatho woShishino

Ukuqamba:

• Cr: 15.0–17.5%
• Ni: 3.0–5.0%
• Cu: 3.0–5.0%
• I-Nb (Cb): 0.15–0.45%

Unyango lobushushu: Isisombululo-sinyangwa kwaye sibadala (ngokuqhelekileyo i-H900 ukuya kwi-H1150-M)

Iipropati zoomatshini (H900):

• Amandla okuqina: 1310 MPa
• Amandla eSivuno: 1170 MPa
• Ubude: 10%
• Ubunzima: ~ 44 HRC

Iingenelo:

• Amandla aphezulu
• Ukumelana nomhlwa okuphakathi
• Ukusebenza kakuhle
• IWeldable

Usetyenziso:

• Amacandelo e-Aerospace
• Izixhobo zenyukliya
• Iivalvu, i-shafts, i-fasteners

Uthelekiso kunye nezinye iintsimbi ze-PH

15-5PH (UNS S15500)

Ukuqamba:

• Ngokufana ne-17-4PH, kodwa ngolawulo olungqongqo kwizinto ezingcolileyo
• Cr: 14.0–15.5%
• Ni: 3.5–5.5%
• Cu: 2.5–4.5%

Iiyantlukwano eziphambili:

• Ukuqina okuguquguqukayo okungcono ngenxa ye-microstructure ecolekileyo
• Ukuphuculwa kweempawu zoomatshini kumacandelo atyebileyo

Sebenzisa Amatyala:

• Ukwenziwa kweAerospace
• Izixhobo zokulungisa imichiza

13-8Mo (UNS S13800)

Ukuqamba:

• Cr: 12.25–13.25%
• Ni: 7.5–8.5%
• Mo: 2.0–2.5%

Iiyantlukwano eziphambili:

• Ukuqina okuphezulu kunye nokumelana nomhlwa
• Amandla aphezulu kwiindawo ezinqamlezileyo ezityebileyo
• Izilawuli eziqinileyo zokwakheka kusetyenziso lwe-aerospace

Sebenzisa Amatyala:

• Amacandelo e-aerospace yesakhiwo
• Imithombo ephezulu yokusebenza

17-7PH (UNS S17700)

Ukuqamba:

• Cr: 16.0–18.0%
• Ni: 6.5–7.75%
• Al: 0.75–1.50%

Iiyantlukwano eziphambili:

• I-semi-austenitic; kufuna umsebenzi obandayo kunye nonyango lobushushu
• Ukubunjwa okungcono kodwa ukuxhathisa kwe-corrosion ephantsi kune-17-4PH

Sebenzisa Amatyala:

• I-Aerospace diaphragms
• Imvubu
• Imithombo

Custom 465 (UNS S46500)

Ukuqamba:

• Cr: 11.0–13.0%
• Ni: 10.75–11.25%
• Ixabiso: 1.5–2.0%
• Mo: 0.75–1.25%

Iiyantlukwano eziphambili:

• Amandla aphezulu kakhulu (ukuya kuma-200 ksi tensile)
• Ukuqina kokwaphuka okugqwesileyo
• Iindleko eziphezulu

Sebenzisa Amatyala:

• Izixhobo zotyando
• Izibophelelo zeenqwelomoya
• Amacandelo ezixhobo zokumisa

Ukuthelekisa unyango lobushushu

Uthelekiso loKuchasa ukonakala

• Okugqibelele:13-8Mo kunye Custom 465
• Kulungile:I-17-4PH kunye ne-15-5PH
• Mhle:17-7PH

Qaphela: Akukho nto ihambelana nokuxhathisa umhlwa kwamabakala e-austenitic ngokupheleleyo njenge-316L.

Machinability kunye Weldability

Ukuqwalaselwa kweendleko

• Eyona Ndleko isebenzayo:17-4PH
• Amabanga aPhakamileyo:13-8Mo kunye Custom 465
• NONE15-5PH

Uthelekiso lwezicelo

Isishwankathelo

Ukuqukumbela

Ngelixa i-17-4PH ihlala iyintsimbi yokuya kwi-PH kwizicelo ezininzi zenjongo jikelele, ibakala ngalinye elihlukile le-PH lineenzuzo ezahlukileyo ezilenza lilungele iimfuno ezithile. Ukuqonda ama-nuances phakathi kwezi alloys kwenza ukuba iinjineli zezinto eziphathekayo kunye nabathengi benze izigqibo ezisekelwe kumandla, ukuqina, ukuxhathisa ukubola, kunye neendleko.