Yog tias koj xav paub ntau ntxiv, xws li kev hais nqe, cov khoom lag luam, cov kev daws teeb meem, thiab lwm yam, pdaim ntawv xauj tsevtiv tauj peb hauv online.
1. Kev piav qhia txog cov lus qhia
| Khoom | Cov Ntsiab Lus | Kev piav qhia |
|---|---|---|
| GOST 8732-78 | Qhov ntau thiab tsawg thiab tus qauv sib txawv rau cov kav hlau tsis muaj qhov kub thiab txias | Qhia txog txoj kab uas hla sab nraud, phab ntsa tuab, ntev, thiab lwm yam. Siv tau rau cov kav dej tsis muaj qhov txuas uas tsim los ntawm kev dov kub (kev hloov pauv kub). OD feem ntau: 32-426 hli; phab ntsa tuab raws li qhov xav tau. |
| GOST 8731-74 | Cov txheej txheem kev cai rau cov kav hlau tsis muaj qhov kub thiab txias | Qhia txog cov tshuaj lom neeg sib xyaw, cov khoom siv kho tshuab, cov txheej txheem sim, cov cai tshuaj xyuas, thiab lwm yam. Ob tus qauv yuav tsum tau siv ua ke los tsim cov lus qhia tiav ntawm cov khoom. |
| 30KhGSA (30ХГСА) | Lavxias teb sab alloy qauv steel qib | Cov hlau sib xyaw ua los ntawm cov pa roj carbon nruab nrab uas muaj lub zog siab thiab tawv zoo. Siv rau hauv kev siv tshuab, kev lag luam tub rog, kev tsav dav hlau, thiab lwm yam. |
| B | Lub npe ntawm cov yeeb nkab "Class" | Ib qho cim qib hauv lub kaw lus txheem Lavxias (zoo ib yam li PSL1). Cov kev cai tshwj xeeb yuav tsum tau lees paub nrog cov ntaub ntawv kev siv tshuab thiab cov ntsiab lus xaj. |
2. Tus Qauv Sib Npaug Suav thiab Khoom Siv
Cov khoom sib npaug ncaj qha: 30CrMnSiA (GB / T 3077 - Alloy structural steel)
Lawv zoo sib xws thiab suav tias yog cov khoom siv tib yam. Kev sib piv cov tshuaj lom neeg:
| Khoom | 30KhGSA (30ХГСА) | 30CrMnSiA | Lus Cim |
|---|---|---|---|
| C | 0.27 – 0.34 | 0.27 – 0.34 | Cov pa roj carbon nruab nrab |
| Si | 0.90 – 1.20 | 0.90 – 1.20 | — |
| Mn | 0.80 – 1.10 | 0.80 – 1.10 | — |
| Cr | 0.80 – 1.10 | 0.80 – 1.10 | Txhim kho qhov tawv tawv |
| S | ≤ 0.025 | ≤ 0.025 | — |
| P | ≤ 0.025 | ≤ 0.025 | — |
Cov khoom siv kho tshuab siv:
Lub zog tensile: ≥ 420 MPa
Lub zog tawm los: ≥ 235 MPa
Kev Ntev: ≥ 24%
Kev cuam tshuam toughness: ≥ 35 J / cm²
Qhov nyuaj: ≤ 207 HB
3. Kev Txhais Lus Txheem
GOST 8732-78
Qhov ntau thiab tsawg: OD 32 – 426 hli, phab ntsa tuab 2.5 – 75 hli (qee qhov chaw qhia txog li 75 hli)
Ntev: Feem ntau 4.0 - 12.5 m
Cov qib hlau siv tau: Ob qho tib si carbon thiab alloy steels (piv txwv li, alloy steel 12Kh1MF, thiab lwm yam)
GOST 8731-74
Scope: Cov kav hlau tsis muaj qhov kub thiab txias uas ua los ntawm cov hlau carbon thiab cov hlau sib xyaw ua ke rau cov hom phiaj dav dav
Cov Ntsiab Lus Tseem Ceeb: Cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, cov txheej txheem sim, cov cai tshuaj xyuas, cov kev cai kho cua sov, thiab lwm yam. Yuav tsum siv ua ke nrog GOST 8732-78
4. Cov Kev Xav Txog Tseem Ceeb Txog Kev Tsim Khoom
Cov khoom siv no yog cov hlau sib xyaw ua los ntawm cov pa roj carbon nruab nrab uas xav tau kev tswj hwm nruj heev. Ua tib zoo saib xyuas cov hauv qab no:
4.1 Kev Tswj Xyuas Khoom Siv Raw
Cov hlau sib xyaw ua ke yuav tsum ua los ntawm cov hlau sib xyaw ua ke. Tshawb xyuas cov tshuaj lom neeg kom ua tau raws li cov qauv (tsawg S & P kom tsis txhob muaj kab nrib pleb).
Xaiv cov billets los ntawm cov chaw tsim khoom loj uas muaj kev paub txog cov hlau alloy (piv txwv li, Baosteel, Valin Steel, Hengyang) kom ntseeg tau tias sab hauv zoo (muaj roj tsawg, tsis muaj cov khoom xyaw).
4.2 Kev Tswj Kub thiab Txias
Qhov kub ntawm cov billets: 1150 - 1250 ° C; xyuas kom meej tias qhov kub sib xws los ntawm lub hauv paus mus rau saum npoo kom tsis txhob kub dhau lossis tsis kub dhau.
Tswj xyuas lub sijhawm ua kom sov thiab huab cua kom tsis txhob muaj decarburisation ntawm qhov chaw (cuam tshuam rau qhov tawv thiab lub zog ntawm qhov chaw).
4.3 Kev Tswj Xyuas Kev Hloov Pauv Thiab Kev Tsim Khoom
Tswj cov phab ntsa tuab sib npaug kom ntseeg tau tias OD thiab phab ntsa tuab kam rau ua tau raws li cov qauv xav tau.
Rau cov txheej txheem tho qhov, siv qhov txo qis me me ua ntej lub ntsaws kom tsis txhob muaj qhov tsis zoo sab hauv xws li lub voj voog lossis tawg.
4.4 Kev Kho Mob Kub (Tseem Ceeb!)
30KhGSA yog cov hlau uas muaj cov pa roj carbon nruab nrab uas tau quenched thiab tempered - nws yuav tsum tau quenching + tempering kom ua tiav cov yam ntxwv xav tau. Tom qab quenching thiab tempering, nws muaj zog heev thiab toughness txaus. Cov lus qhia txog kev kho cua sov ib txwm muaj: quenching ntawm 880 ° C, roj txias; tempering ntawm 540 ° C, dej lossis roj txias. Cov yam ntxwv kho tshuab tom qab kev kho cua sov yuav tsum tau kuaj xyuas nruj me ntsis raws li tus qauv.
4.5 Kev Tshuaj Xyuas Zoo
Kev sim tsis ua puas tsuaj: Raws li qhov yuav tsum tau ua, txhua lub yeeb nkab yuav tsum tau kuaj xyuas los ntawm kev sim ultrasonic (UT) lossis eddy current (ET).
Kev kuaj xyuas cov khoom siv kho tshuab: Yuav tsum tau coj cov qauv ib pawg rau kev sim tensile, kev cuam tshuam, kev sib npaug / kev khoov.
Kev tshuaj xyuas qhov ntev thiab pom: Txhua lub yeeb nkab raug kuaj xyuas rau OD, phab ntsa tuab, ntev, qhov zoo ntawm qhov chaw, qhov kawg bevel, thiab lwm yam.
5. Cov Ntawv Thov & Cov Kev Cai Xa Khoom Mus Rau Lwm Lub Tebchaws
Cov kav dej tsis muaj qhov sib txuas ntawm cov khoom siv no feem ntau yog siv rau hauv kev tsav dav hlau, kev tsim khoom tub rog, kev tsim kho tshuab (kev siv zog siab), nrog rau cov ncej hnyav, cov iav, cov hniav compressor, thiab lwm yam.
Thaum xa tawm mus rau Russia, yuav tsum ua raws li Eurasian Customs Union Technical Regulation TR CU 032/2013 (Kev Nyab Xeeb ntawm Cov Khoom Siv Siab). Nws raug pom zoo kom paub meej cov kev cai ntawm EAC daim ntawv pov thawj nrog cov neeg siv khoom ua ntej thiab suav nrog kev txhawb nqa kev txawj ntse hauv cov lus hais.
Yog tias tus neeg siv khoom tsuas yog muab qib hlau thiab tus qauv yam tsis tau teev OD, phab ntsa tuab, ntev thiab ntau npaum li cas, thov cov ntaub ntawv no ua ntej ua ntej hais tus nqi kom tsis txhob muaj kev pheej hmoo ntawm kev ua haujlwm tom ntej.
Thaum teb, hais ua ntej txog cov lus tseem ceeb xws li kev vuam tsis zoo thiab daim ntawv pov thawj EAC los qhia txog kev ua haujlwm tshaj lij.
Lub sijhawm tshaj tawm: Lub Rau Hli-01-2026
