Hauv hlau txiav, muaj cov ntaub ntawv sib txawv. Cov ntaub ntawv sib txawv nyias muaj nyias kev tsim thiab tshem tawm cov yam ntxwv. Peb yuav ua li cas thiaj yuav ua rau cov yam ntxwv ntawm cov khoom sib txawv? ISO txheem cov ntaub ntawv hlau tau muab faib ua 6 hom ntau pawg. Txhua hom muaj cov yam ntxwv tshwj xeeb hauv cov ntsiab lus ntawm machinability. Kab lus no yuav nthuav lawv luv luv.
Cov ntaub ntawv hlau tau muab faib ua 6 pawg loj: (1) p-steel (2) m-cam khwb cia hlau (3) k-cam khwb cia (5) Hardened Hlau
01- p steel
Hlau yog dab tsi? - Hlau yog cov pab pawg ntau tshaj plaws hauv kev txiav cov hlau txiav. - Hlau yuav tuaj yeem yog cov hlau tsis zoo lossis cov hlau tawg thiab tempered (hardness txog li 4 0 0hb). - Hlau yog ib qho alloy nrog hlau (FE) raws li lub ntsiab tivthaiv. Nws yog tsim los ntawm cov txheej txheem smelting. - Tsis-Alloy Steel muaj cov ntsiab lus carbon tsawg dua 0.8%, tsuas yog fe thiab tsis muaj lwm yam alloying. - Alloy steel muaj cov ntsiab lus carbon muaj tsawg dua 1.7%, thiab cov khoom siv xws li NI, CR, thiab lwm yam.
Cov Cheeb Tsam Thov: Hauv cov khoom siv hlau, P pawg yog cov pab pawg loj tshaj plaws, raws li nws tau txais ntau yam sib txawv cov haujlwm.
Cov ntaub ntawv feem ntau yog ntev-chapping cov ntaub ntawv uas ua daim ntawv txuas ntxiv, cov khoom siv hluav taws xob sib txuas. Cov nti tshwj xeeb daim ntawv feem ntau yog nyob ntawm cov ntsiab lus carbon. - Cov ntsiab lus muaj roj carbon tsawg=tawv} tawv, nplaum lo. - Muaj cov pa roj carbon siab =} cov khoom siv brittle.
Machining Cov yam ntxwv: - Ntev-Chipping Khoom. - Chip tswj tau yooj yim thiab du. - Cov hlau me me yog cov nplaum thiab yuav tsum tau ib qho ntse ntse. - Chav txiav Force KC: 1500 ~ 3100 n / mm² - lub zog yuam thiab lub zog yuav tsum tau ua cov txheej txheem ISO P cov khoom siv tsis pub dhau ib qho kev txwv.
02- m stainless hlau
Dab tsi yog stainless hlau? - Stainless hlau yog ib cov khoom siv alloy nrog tsawg kawg ntawm 11% ~ 12% chromium. - Cov ntsiab lus carbon feem ntau yog tsawg heev (nqis rau qhov siab tshaj plaws ntawm {4}}. 01%). - Cov alloy yog mas ni (npib tsib), mo (Molybdenum) thiab ti (titanium). - Lub txheej ntom ntawm cr2o3 yog tsim nyob rau saum npoo ntawm cov hlau, ua rau nws corrosion-resistant.
Cov ntawv thov: hauv pab pawg M, feem ntau cov ntawv thov yog nyob rau hauv cov roj thiab roj, cov yeeb nkab fittings, flanges, kev lag luam kev lag luam.
Nti cov duab: Cov khoom siv cov khoom siv npliag quav, uas tau txiav ntau dua li cov hlau zoo tib yam. Muaj ntau yam sib txawv ntawm cov hlau stainless. Lub nti tawg ua tau zoo (los ntawm ib qho yooj yim rau yuav luag tsis yooj yim sua kom tawg cov chips) txawv nyob ntawm cov yam ntxwv alloy thiab kev kho cua sov.
Machining Cov yam ntxwv: - Ntev cov khoom siv ntev. - Chip Tswj yog tus ntse nyob rau hauv ferrite, nyuaj nyob rau hauv austimenite thiab duplex. - Qhia meej txog kev txiav txim siab: 1800 ~ 2850 tus txiv neej - siab txiav, thiab ua kom sov thiab ua haujlwm ua kom sov yog tsim tau thaum lub sijhawm ua haujlwm.
03- k cam cam cam khwb cia hlau
Dab tsi yog cam khwb cia hlau? - Muaj 3 lub ntsiab ntawm cov hlau cam khwb cia: Grey cam khwb cia hlau (GCI), ductab hlau (NCI) thiab compaction graphite hlau (CGI). - Cov Hlau Cam Khij Hlau tsuas yog tsim ntawm Fe-C nrog cov ntsiab lus sib tw siab (1% ~ 3%). - Cov ntsiab lus carbon yog ntau tshaj 2%, uas yog cov solubility ntau tshaj plaws ntawm C hauv Austenite theem. - CR (chromium), mo (Molybdenum) thiab v (vanadium) ntxiv rau daim carbides, uas nce lub zog thiab hardness, tab sis txo tev machinability.
Cov Cheeb Tsam Thov: K Pab pawg yog siv hauv kev lag luam yam lag luam, tshuab tsim thiab ironmaking.
Nti cov duab: cov duab nti ntawm cov khoom sib txawv, los ntawm ze li ntawm cov hmoov nplej rau cov chips ntev. Lub zog uas yuav tsum tau ua cov ntaub ntawv no feem ntau tsawg dua. * Nco tseg: Muaj qhov sib txawv ntawm cov hlau nplaum xim txho
Machining Cov yam ntxwv: - luv luv-chapping khoom. - Zoo chip tswj nyob rau hauv txhua qhov kev ua haujlwm. - Chav txiav Force: 790 ~ 1350 n / mm²- abrasive hnav tshwm sim thaum machining ntawm kev ceev. - Kev txiav nyiaj nruab nrab.
{{0 {}} n} n tsis muaj hlau
Dab tsi yog cov khoom tsis yog? - Pawg no suav nrog cov hlau tsis tau, cov hlau muag nrog lub hardness hauv qab 130 HB. - Tsis muaj kev pab cuam (al) alloys muaj ze li 22% silicon (Si) tsim qhov loj tshaj plaws. - Tooj liab, tooj dag, tooj dag.
Cov Cheeb Tsam Thov: Cov dav hlau tsim khoom thiab txhuas alloy aluminoy aluminoy log tsheb tuam ntxhab yeej cov n pawg.
Txawm hais tias lub zog uas yuav tsum muaj ib teev cubic tsis tau, lub zog tshaj plaws yuav tsum tau muab xam kom ua tiav qhov kev tshem tawm hlau siab.
Machining Cov yam ntxwv: - Ntev cov khoom siv ntev. - Nyob rau hauv cov ntaub ntawv ntawm alloys, nti tswj tau yooj yim. - Tsis muaj hlau hlau tsis muaj hlau (al) lo nplaum thiab xav tau ib qho ntse ntse. - Chav txiav Force: 350 ~ 700 n / mm²- Lub zog txiav thiab lub zog yuav tsum tau ua cov txheej txheem ISO N cov khoom siv yog li tsawg.
05-} s tiv thaiv tshav kub alloys
Cov tshuaj tiv thaiv kub alloys alloys dab tsi? - Thaum tshav kub kub resistant alloys (hrsa) suav nrog ntau cov hlau loj, npib tsib xee, cobalt lossis titanium raws li cov ntaub ntawv. Pab Pawg: Hlau raws li, Nickel raws, kev cob qhia kev ua haujlwm: Kev Kho Mob Kub, Rolling, Forging, Casting. Nta: Ntau dua cov ntsiab lus sib xyaw (cobalt tshaj li Nickel) ua kom muaj hluav taws kub zoo dua, lub zog ntau dua thiab ntau dua corrosion tsis kam
Thaj chaw thov: Kev nyuaj rau cov txheej txheem cov ntaub ntawv s pab pawg yog siv hauv aerospace, roj av tshuab thiab lag luam roj av.
Qhov ntau yog dav, tab sis kev txiav siab ntau feem ntau muaj.
Cov yam ntxwv ua: - Ntev chapping cov ntaub ntawv. - nyuaj chip tswj (s dripsic chips). - Lub kaus ntxhw tsis zoo rau cov ceramics thiab lub kaus mom thiab lub zog tso dag rau carbides. - Chav txiav quab yuam: Rau cov kub tiv thaiv alloys: 2400 ~ 3100 n / mm² rau titanium alloys: 1300 ~ mm² - qhov xav tau kev quab yuam thiab lub zog yog siab heev.
06-} h hardened hlau
What are hardened steels? - Hardened steels are the smallest group from a machining point of view. - This group contains quenched and tempered steels with a hardness >45 ~ 65 HRC. - Feem ntau, lub hardness ntawm cov tawv tawv tau muab yog nyob rau hauv thaj tsam ntawm 55 ~ 68 hrc.
Cov ntawv thov: Cov hlau tawv hauv H pab pawg yog siv ntau yam kev lag luam, xws li kev lag luam hauv lub tshuab thiab cov khoom lag luam pwm.
Nti cov duab: feem ntau txuas ntxiv, liab-kub chips. Qhov kub siab no yuav pab txo tus lej KC1 thiab tseem ceeb uas yuav pab daws cov teeb meem thov.
Machining cov yam ntxwv: - Ntev cov khoom siv ntev. - Cov kev tswj hwm tau zoo. - Kev tsis zoo rake lub kaum sab xis yog yuav tsum tau. - Chav txiav cov quab yuam: 2550 ~ 4870 n / mm² - qhov xav tau txiav quab yuam thiab lub zog yog siab heev.
