Dab tsi yog 30 Steel
30 steel yog ib qho zoo carbon structural steel txhais nyob rau hauv Suav standard GB / T 699, nrog ib tug nominal carbon ntsiab lus ntawm txog 0.30%. Nws nyob nruab nrab ntawm qhov qis-carbon 20 steel thiab nruab nrab- carbon 35 thiab 45 steels, muab qhov sib npaug ntawm lub zog, tawv, thiab tus nqi uas haum rau ntau yam ntawm cov tshuab. Cov raj ua los ntawm 30 steel yog muab seamless rau machining rau hauv shafts, pins, gears, thiab lwm yam mechanical Cheebtsam, thiab lawv teb zoo rau kev kho cua sov, uas cia cov chaw tsim tshuaj paus tailoring cov khoom zaum kawg. Hauv European system qhov sib npaug ze tshaj plaws yog C30 thiab C30E qib ntawm EN 10083-2, thiab hauv American system AISI 1030.
Tshuaj muaj pes tsawg leeg
Cov muaj pes tsawg leeg ntawm 30 steel ib GB / T 699 yog:
| Element | Cov ntsiab lus,% |
|---|---|
| Cov pa roj carbon | 0.27 – 0.34 |
| Silicon | 0.17 – 0.37 |
| Manganese | 0.50 – 0.80 |
| Phosphorus, max | 0.035 |
| Sulphur, max | 0.035 |
| Chromium, max | 0.25 |
| Nickel, max | 0.30 |
| Tooj, max | 0.25 |
Cov pa roj carbon ntau dua piv rau 20 steel muab ntau zog thiab hardness, thaum cov khoom seem tswj kom cov hlau huv si thiab kwv yees.
Mechanical Properties
Nyob rau hauv lub normalized los yog raws li -muab mob, 30 steel feem ntau guarantees ib tug yield zog ntawm yam tsawg kawg nkaus 295 MPa, lub tensile lub zog ntawm yam tsawg kawg nkaus 490 MPa, qhov tsawg kawg nkaus elongation ntawm 21%, thiab qhov tsawg kawg nkaus txo ntawm cheeb tsam ntawm 50%, nrog ib tug siab tshaj plaws hardness nyob ib ncig ntawm 179 HBW. Tom qab hardening thiab tempering, lub zog nce ntau, thiab cov nqi tseeb nyob ntawm seb qhov loj me thiab qhov kub thiab txias. Rau kev thauj khoom-cov kabmob, cov khoom yuav tsum tau teev tseg thiab txheeb xyuas los ntawm kev ntsuas tensile ntawm cov khoom xa tuaj.
Kev kho cua sov
30 steel teb rau normalizing, hardening, thiab tempering. Normalizing ntawm li 850 mus rau 880 C refines cov nplej thiab yog tus qauv kev kho rau xa tub raj. Hardening los ntawm quenching los ntawm txog 850 C ua raws li tempering nyob rau hauv thaj tsam 540 mus rau 650 C muab qhov zoo tshaj plaws ua ke ntawm lub zog thiab toughness rau shafts thiab tshuab qhov chaw. Nto hardening los ntawm induction los yog nplaim taws txoj kev yuav siv tau rau bearing nto. Cov cua sov{10}}kev kho mob yuav tsum tau pom zoo nyob rau theem kev txiav txim, vim nws txiav txim siab cov khoom xa tuaj.
Machining thiab Vuam
Nyob rau hauv lub normalized los yog annealed mob, 30 steel machines zoo nrog standard tooling, uas yog vim li cas nws yog nrov rau tig thiab drilled Cheebtsam. Vuam tuaj yeem ua tau nrog cov pa roj carbon- cov txheej txheem hlau, tab sis cov ntsiab lus carbon nruab nrab txhais tau hais tias preheating yog pom zoo rau cov ntu tuab, thiab tom qab- vuam cov cua sov yuav xav tau rau cov pob qij txha tseem ceeb. Rau cov qauv welded, qis dua - qib carbon feem ntau yog nyiam, vim tias qhov weldability zoo dua qub thaum cov pa roj carbon poob.
Daim ntawv thov
30 steel kav yog siv rau shafts, txuas rods, pins, zog, bolts, thiab couplings nyob rau hauv machinery; chassis thiab steering Cheebtsam hauv tsheb; hydraulic thiab pneumatic lub tog raj kheej chim; thiab dav dav jigs, thav duab, thiab tshuab qhov chaw. Cov khoom siv yog tus nqi - siv tau zoo rau cov hlau alloy qhov twg qhov kev thov kev ua haujlwm yog nruab nrab, thiab nws tau dav dav raws li seamless raj rau machining. Rau siab- muaj kev pabcuam, lub siab- qib steel yog ib txwm teev es tsis txhob siv tshuab- qib steel.
Cov lus nug nquag
Q: 30 txhais li cas hauv 30 steel?
Tus lej yog cov ntsiab lus carbon nominal: 30 steel muaj li ntawm 0.27 txog 0.34% carbon, ib GB / T 699.
Q: Qhov txawv ntawm 30 steel thiab 20 steel yog dab tsi?
30 steel muaj cov pa roj carbon ntau dua, yog li nws muaj zog dua, hnyav dua, thiab hnav ntau dua - tiv taus, tab sis tsis tshua muaj ductile thiab me ntsis nyuaj rau weld . 20 steel yog siv qhov ductility thiab weldability tseem ceeb dua.
Q: Dab tsi yog cov khoom siv kho tshuab ntawm 30 steel?
Yam tsawg kawg nkaus yog 295 MPa yield, 490 MPa tensile, 21% elongation, thiab 50% txo ntawm cheeb tsam nyob rau hauv lub normalized mob.
Q: 30 steel siv rau dab tsi?
Shafts, gears, pins, txuas rods, hydraulic thooj voos kheej kheej, thiab cov tshuab dav dav uas xav tau lub zog nruab nrab thiab hnav tsis kam.
Q: 30 steel puas tuaj yeem welded?
Yog, nrog cov txheej txheem txheej txheem thiab preheat rau tuab ntu. Tom qab-weld kev kho cua sov yuav tsum tau rau cov pob qij txha tseem ceeb.
Q: Dab tsi yog qhov sib npaug ntawm 30 steel?
Kwv yees li C30 thiab C30E rau EN 10083-2 thiab AISI 1030 hauv Asmeskas. Kev sib npaug yuav tsum tau lees paub tiv thaiv cov rooj vaj khoom tsev.
