China ASTM A681 D7 Isixhobo Steel Bar umenzi kunye noMboneleli
Isixhobo se-D7 Tool Steel yikhabhoni ephezulu, i-chromium ephezulu yokuqina kwesixhobo sentsimbi enokumelana okugqwesileyo.
Oku kuxhathisa ukunxitywa ikakhulu ngenxa yekhabhoni ephezulu kunye nomxholo we-vanadium, owenza inani elikhulu lamasuntswana e-vanadium carbide eqinile kwintsimbi, enobunzima obulingana ne-80 ukuya kwi-85 ye-Rockwell C.
Le propati yenza i-D7 yensimbi yensimbi isebenze ekuxhathiseni ukunxiba xa i-sliding contact kunye nezinye iintsimbi kunye nokudibanisa ne-slurries ezomileyo nezimanzi zamasuntswana abrasive anzima njengesanti, i-shot blasting media kunye ne-ceramics.
Isixhobo sensimbi se-D7 sisetyenziswa ngokubanzi, ikakhulu kubandakanywa izitena zokubumba izitena, ukubunjwa kwe-briquetting, ukudutyulwa kwezixhobo zokuqhumisa izixhobo, i-ceramic extrusion kunye nezixhobo zokwenza, izixhobo zokudibanisa umgubo, umzobo onzulu uyafa, i-flatening rollers kunye ne-rails yesikhokelo somatshini, njl.
Kule meko yesicelo, ukunyanzeliswa kokugqoka, ukuqina kunye nokuqina kwesixhobo sensimbi ye-D7 kusetyenziswa ngokupheleleyo.
Ngokuphathelele unyango lokushisa, inkqubo yokuqina kwe-D7 isixhobo sentsimbi ifuna amanyathelo afana nokufudumeza kwangaphambili, i-austenitization (ubushushu obuphezulu) kunye nokufudumala.
Ubushushu obuqhelekileyo bobushushu bungama-300°F (149°C) kowona mgangatho wokuxhathisa ukunxiba. Kwakhona, ukuqina okukhulu, ukucaphuka kabini kunokwenziwa, kubambe kubushushu obungaphezulu kwe-950 ° F (510 ° C) iiyure ezimbini kwaye emva koko ubambe ezinye iiyure ezimbini.
Ngokumalunga nokusika ukusebenza, ukusika kwe-D7 isixhobo sensimbi malunga ne-30-35% ye-1% ye-carbon steel. Oku kuthetha ukuba izixhobo ezifanelekileyo kunye nobuchule ziyafuneka ngexesha lenkqubo yomatshini ukuze kuqinisekiswe umgangatho olungileyo womatshini kunye nokusebenza kakuhle.
Ngokubanzi, i-D7 isixhobo sensimbi sisixhobo esiphezulu sokunxiba esinesixhobo esifanelekileyo esifanelekileyo kwiimeko ezahlukeneyo zesicelo ezifuna ukumelana nokunxiba kunye nefuthe.
Ukumelana kwayo okugqwesileyo kokunxiba, ukuqina kunye nokuqina, kunye nokucutshungulwa kakuhle kokusika, kuyenza isetyenziswe ngokubanzi kwimveliso yemizi-mveliso.
Isixhobo sensimbi ye-D7 yintsimbi ekumgangatho ophezulu wekhabhoni, i-high-chromium alloy tool ethatha indawo ebalulekileyo kwimveliso yemizi-mveliso ngenxa yeempawu zayo ezibalaseleyo zomzimba kunye neekhemikhali. Eli nqaku lijolise kwiinkcukacha ze-D7 isixhobo sentsimbi kunye nokusetyenziswa kwayo okuphambili.
Iimpawu eziphambili ze-D7 Tool Steel
Ubunzima obuphezulu kunye nokunganyangeki okuqinileyo: Emva konyango olufanelekileyo lobushushu, intsimbi ye-D7 inokufikelela kubulukhuni obuphezulu kakhulu, inika ukuxhathisa okugqwesileyo kokunxiba.
Olu phawu lwenzaD7 intsimbiigqwesileyo kwiindawo zokusebenza eziphantsi kwemithwalo ephezulu kunye nokukhuhlana ngesantya esiphezulu.
Ukuchasa impembelelo: Ngenxa yokuqina kwayo okuphezulu kunye nokuqina okuhle, isixhobo se-D7 sensimbi sinokuchasana nempembelelo entle kwaye siyakwazi ukugcina ingqibelelo yesakhiwo xa sichaphazeleka ngamandla angaphandle.
Ukuchasa umhlwa: Isixhobo sensimbi se-D7 siqulethe inani elithile le-chromium, elivumela ukuba ligcine uzinzo oluhle kunye nokuqina kwezinye iindawo ezinobungozi.
Yintoni umahluko phakathi kwe-D7 kunye ne-D2 isixhobo sentsimbi?
Isixhobo sensimbi ye-D7 kunye ne-D2 yensimbi yensimbi (ekwabizwa ngokuba yi-Cr12MoV) zizixhobo ezimbini ezahlukeneyo zentsimbi, nganye ineempawu ezizodwa kunye nokusetyenziswa.
I-D7 Tool Steel yikhabhoni ephezulu, i-chromium ephezulu yokuqina kwesixhobo sentsimbi enokumelana okugqwesileyo kokunxiba. Ikhabhoni ephezulu kunye nomxholo wayo we-vanadium ubangela inani elikhulu le-vanadium carbide particles eqinile kwintsimbi, enobunzima obulingana ne-80 ukuya kwi-85 ye-Rockwell C.
Ngoko ke, ixhathisa ngokufanelekileyo ukunxiba okubangelwa ukudibanisa ukutyibilika kunye nezinye iintsimbi kunye noqhagamshelwano oluludaka olomileyo nolumanzi kunye namasuntswana anqabileyo abrasive anjengesanti, i-shot blasting media kunye ne-ceramics. Oku kwenza i-D7 yensimbi yensimbi ifaneleke kwizicelo ezahlukeneyo, kubandakanywa izitena zokubumba izitena, i-briquetting dies, i-shot blasting blasting linings, i-ceramic extrusion kunye nezixhobo zokwenza, izixhobo zokudibanisa umgubo, umzobo onzulu uyafa, i-flattening rollers kunye ne-rails yesikhokelo somatshini.
Isixhobo sensimbi ye-D2 (i-Cr12MoV) iphinda ibe yikhabhoni ephezulu, i-high-chromium yensimbi yensimbi enobunzima obuhle kakhulu, ukuxhathisa ukugqoka, ukuxhathisa ukubola kunye nokuxhatshazwa kwe-deformation. Umxholo wayo wekhabhoni uphezulu njenge-1.40% -1.60%, ephucula ubunzima bayo kunye nokuxhatshazwa kokugqoka.
Kwangaxeshanye, intsimbi ikwanechromium ephezulu kunye nomxholo we-molybdenum, enokuphucula ngokufanelekileyo ukuxhathisa ukubola.
Isixhobo sensimbi se-D2 sinokufumana iipropathi ezigqwesileyo zoomatshini kunye nobulukhuni ngeenkqubo zonyango lobushushu ezinje ngokucima kunye nokufudumeza, kwaye inobuchule obuhle bokuhlangabezana neemfuno ezahlukeneyo zomatshini. Ezi zakhiwo zenza i-D2 yensimbi yensimbi isetyenziswe ngokubanzi ekwenzeni iindawo eziphezulu ezifana nokubumba, izixhobo zokusika kunye nokufa.
Isixhobo se-D7 sentsimbi engqukuva bar
Ukwakheka kwemichiza(iqhezu lobunzima)(wt.%) ye-D7 isixhobo sentsimbi
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Mo(％) | V(%) |
| 2.15–2.50 | 0.10 ~ 0.60 | 0.10 ~ 0.60 | ≤0.030 | ≤0.030 | 11.5-13.5 | 0.70-1.20 | 3.80-4.40 |
I-ASTM A681-US
I-FED QQ-T-570-US
I-SAE J437-US
I-SAE J438-US
I-UNS T30407-US
Isixhobo sentsimbi ye-AISI D7-US
Indlela yokunyibilikisa kwe D7
I-1 EAF: I-Electric Arc Furnace
I-2 EAF + LF + VD: Ukunyibilika okucokisekileyo kunye ne-vacuum degassing
3 EAF + ESR: Electro Slag Remelting
I-4 EAF + PESR: umoya wokukhusela i-Electro Slag Remelting
I-5 VIM + PESR: I-vacuum induction melting
Ukubumba Ukhetho ye-D7 Steel
1 Inkqubo yokuqengqeleka eshushu
2 Ukuqulunqa okushushu: Electro-hydraulic; Isantya esiphezulu-hydraulic; I-oyile-hydraulic; Ukulungisa ngokuchanekileyo
Ukhetho loNyango lobushushu yentsimbi d7
1 +A: I-Anelled (igcwele/ithambile/i-spheroidizing)
2 +N: Iqhelekile
3 +NT: Iqhelekile kwaye inomsindo
I-4 +QT: Icinyiwe kwaye ipholile (amanzi / ioli)
Inketho yobuso yeSixhobo seNsimbi
1 uMphezulu oMnyama
2 Grounded: Iqaqambile kodwa irhabaxa; Hayi ukuchaneka
3 Ukulungisa ipleyiti: Ukuqaqamba nokuchaneka; Isiva esiguqukayo esincinci
4 Icwecwe/Ijikwe: Iqaqambile kwaye ichanekile; Isiva esiguqukayo esincinci
5 Ikhazimlisiwe: Ikhazimle kakhulu kunye nobukhulu obuchanekileyo; Ukungajiki isiva
IIPROPATI ZOOMATSHINI OF ISIXHOBO LWEZINCIMA D7
| Yima kancinci Rp0.2 (MPa) | Ukuqina Rm (MPa) | Impembelelo I-KV/Ku (J) | Elongation A (%) | Ukunciphisa icandelo lomnqamlezo kwi-fracture Z (%) | Imeko yoNyango-njengobushushu | Ukuqina kweBrinell (HBW) |
| 984 (≥) | 682 (≥) | 41 | 31 | 23 | Isisombululo kunye nokuguga, i-Anealing, i-Ausaging, i-Q + T, njl | 322 |
| Iimveliso | Ububanzi (mm) | Ubude(mm) |
| IBar eqengqelekayo | 10-95 | 3000~5700 |
| Ibha yokwenziwa | 95~440 | 3000~5700 |
| Ibhilethi | 130×130,140×140,150×150,160×160 | 7000Ubukhulu |
