Machinery yog kev sib xyaw ua ke ntawm tib neeg lub cev tsim cov khoom, nrog cov kev txheeb ze txheeb ze ntawm txhua qhov khoom, uas tuaj yeem pab tib neeg txo qhov nyuaj ntawm kev ua haujlwm lossis txuag nyiaj.
Cov cuab yeej siv hluav taws xob. complex A tshuab yog tsim los ntawm ob lossis ntau lub tshuab yooj yim, thiab cov tshuab ua haujlwm feem ntau hu ua tshuab.
Muaj ntau hom kev siv tshuab, uas tuaj yeem muab faib ua cov tshuab ua liaj ua teb, mining machinery, kev tsim kho tshuab, petrochemical general machinery, hluav taws xob machinery, thiab cov cuab yeej siv tshuab raws li kev lag luam tau txais kev pab, Instrumentation, foundation. Machinery, ntim machinery, ib puag ncig tiv thaiv machinery, thiab lwm yam. Hlau rau machinery manufacturing, structural steel siv los tsim mechanical qhov chaw uas dais load los yog xa mus ua hauj lwm thiab quab yuam, kuj hu ua tshuab structural steel. Muab faib los ntawm lub hom phiaj
quenched thiab tempered steel, tawv nto
Chemical steel (xws li carburizing steel, nitriding steel, tsawg hardenability steel), dawb-txiav steel, elastic steel thiab dov bearing steel, thiab lwm yam.
1. quenched thiab tempered steel
quenched thiab tempered steel feem ntau quenched thiab ces tempered ua ntej siv kom ua tiav qhov yuav tsum tau muaj zog thiab toughness. Cov ntsiab lus ntawm carbon quenched thiab tempered steel yog 0.03 ~ 0.60%.
Vim nws tsis tshua muaj hardenability,
Nws tsuas yog siv los tsim cov khoom siv tshuab nrog cov ntu me me, cov duab yooj yim lossis cov khoom siv qis. Alloy quenched thiab tempered steel yog ua los ntawm carbon
Raws li cov hlau zoo, ib lossis ntau lub ntsiab lus tau ntxiv
Tag nrho cov nyiaj ntawm alloying ntsiab ntxiv-feem ntau tsis tshaj 5%. Alloy quenched thiab tempered steel muaj zoo hardenability thiab yuav siv tau nyob rau hauv
Hardened hauv roj, me me quenching deformation, zoo zog thiab toughness
Cov qib steel feem ntau siv yog 40Cr, 35CrMo, 40MnB, thiab lwm yam. Cov ntu ntu loj yog loj.
, Cov khoom tseem ceeb nrog kev thauj khoom siab, xws li aero engine main shaft, high-speed diesel engine crankshaft
Thiab txuas rods, lub ntsiab ncej ntawm chav turbines thiab generators, thiab lwm yam.
Cov qib steel nrog cov ntsiab lus siab ntawm cov ntsiab lus alloying, xws li 40CrNiMo, 18CrNiW, 25Cr2Ni4MoV, thiab lwm yam.
2. Carburized hlau
Carburized steel yog siv los tsim cov khoom uas yuav tsum tau ua kom tawv thiab hnav-resistant nto thiab muaj zog thiab cuam tshuam-resistant cores, xws li saw pins, piston pins, zog, thiab lwm yam. Cov ntsiab lus ntawm carburized steel yog tsawg, uas yog 0.10 ~ 0.30%. , txhawm rau ua kom lub zog ntawm lub hauv paus ntawm qhov chaw, tom qab kev kho mob carburizing, cov pa roj carbon ntau thiab cov tawv tawv tawv tawv tuaj yeem tsim rau ntawm qhov chaw. Alloy carburizing tuaj yeem siv rau qhov tseem ceeb dua. Hlau, feem ntau siv steel qib yog 20CrMnTi, 20CrMo, 20Cr, thiab lwm yam.
3. Nitrided hlau
Nitrided steel muaj alloying ntsiab nrog ib tug muaj zog affinity rau nitrogen, xws li txhuas, chromium, molybdenum, vanadium, thiab lwm yam., los pab txhawb lub infiltration ntawm nitrogen. Cov txheej txheej nitrided nyuaj dua, hnav-tiv taus thiab corrosion-resistant dua li txheej carburized, tab sis txheej carburized
Cov txheej nitrogen yog thinner. Tom qab nitriding, lub deformation ntawm qhov chaw me me, thiab nws yog feem ntau siv los tsim precision qhov chaw nrog me me tso cai hnav, xws li kev sib tsoo tshuab spindles, plunger khub, precision zog, valve stems, thiab lwm yam., feem ntau siv steel qib. Muaj 38CrMoAl.
4. Tsawg hardenability hlau
Tsawg hardenability hlau yog ib qho tshwj xeeb carbon steel nrog tsawg seem seem xws li manganese thiab silicon. Lub hauv paus ntawm qhov chaw ua los ntawm cov hlau no yog qhov nyuaj rau quench dua li cov pa roj carbon zoo tib yam steel thaum quenching. Tsis tas li ntawd, cov txheej txheem tawv tawv yog qhov sib npaug ntawm qhov sib npaug ntawm qhov chaw ntawm qhov chaw, thaum qhov chaw nruab nrab tuav lub softer thiab tougher matrix los hloov carburized steel los ua zog, bushings, thiab lwm yam, uas yuav txuag tau nyiaj. Lub sijhawm carburizing txheej txheem, txuag lub zog noj. Txhawm rau kom phim qhov nyuaj ntawm qhov nruab nrab nrog lub hardness ntawm qhov chaw kom zoo, nws cov ntsiab lus carbon feem ntau yog 0.50 ~ 0.70%.
5. Dawb txiav hlau
Dawb-txiav steel yog qhov sib ntxiv ntawm ib lossis ntau lub ntsiab lus xws li sulfur, lead, calcium, selenium, thiab lwm yam rau cov hlau kom txo tau qhov txiav quab yuam. Cov nyiaj ntxiv feem ntau tsuas yog ob peb txhiab lossis tsawg dua. Lub cev, los yog ntxiv cov ntsiab lus ua ke nrog lwm cov ntsiab lus hauv cov hlau los ua ib hom kev suav nrog uas txo cov kev sib txhuam thiab txhawb cov nti tawg thaum lub sij hawm txiav, thiaj li ua kom lub neej ntev thiab txo kev txiav. Lub hom phiaj ntawm kev txiav quab yuam, txhim kho qhov chaw roughness, thiab lwm yam. Vim tias qhov sib ntxiv ntawm cov sulfur yuav txo cov khoom siv ntawm cov hlau, feem ntau tsuas yog siv los tsim cov khoom siv lub teeb. Niaj hnub nimno dawb-txiav steel vim kev ua tau zoo. Kev txhim kho kuj tau siv dav hauv kev tsim cov khoom siv tsheb.
6. Caij nplooj ntoos hlav steel
Lub elastic steel muaj qhov siab elastic txwv, qaug zog txwv thiab tawm los piv. Nws lub ntsiab daim ntawv thov yog springs. Springs yog dav siv nyob rau hauv ntau yam machinery thiab instruments. Lawv qhov tsos tuaj yeem muab faib. Muaj ob hom nplooj springs thiab coil springs. Lub luag haujlwm tseem ceeb ntawm lub caij nplooj ntoos hlav yog kev poob siab thiab lub zog cia. Lub elastic deformation, nqus ntawm qhov cuam tshuam lub zog, txo qhov cuam tshuam, xws li qhov tsis sib xws ntawm lub tsheb thiab lwm yam tsheb; lub caij nplooj ntoos hlav tseem tuaj yeem tso tawm lub zog nqus tau los ua rau lwm qhov chaw ua tiav qee yam kev ua, xws li lub valve caij nplooj ntoos hlav ntawm lub cav, ntsuas lub rooj springs, thiab lwm yam.
7. Cov kabmob hlau
Cov kabmob steel muaj siab thiab tsis sib xws hardness thiab hnav tsis kam, nrog rau siab elastic txwv. Lub uniformity ntawm cov tshuaj muaj pes tsawg leeg ntawm cov kabmob steel, cov ntsiab lus thiab kev faib tawm ntawm non-metallic inclusions, thiab carbides. Kev faib khoom thiab lwm yam kev cai ntawm cov hlau yog nruj heev, thiab nws yog ib qho ntawm cov qib steel nruj tshaj plaws nyob rau hauv tag nrho cov hlau ntau lawm. Cov kabmob steel yog siv los tsim cov khoom, cov menyuam thiab lub tes tsho ntawm cov kabmob dov. Cov qib steel kuj tseem siv tau los ua cov cuab yeej precision, txias tuag, tshuab cuab yeej ntsia hlau, xws li tuag, cuab yeej, kais thiab diesel roj twj precision qhov chaw.