Qhov kev cuam tshuam ntawm cov kav hlau hlau yog qhov kev ntsuas tseem ceeb rau kev ntsuas qhov tsis kam ntawm cov kav hlau ua kom tsis txhob muaj qhov cuam tshuam hauv kev cuam tshuam hauv kev cuam tshuam. Nws tuaj yeem ncaj qha rau cov tawv ntawm cov khoom. Cov lus hauv qab no ua rau nws cov ntaub ntawv tseem ceeb, ua rau koj nkag siab sai.
Cov khoom lag luam
| Ntsuas Yam | Kev piav txog |
| Lub hom phiaj tseem ceeb | Ntsuas qhov muaj peev xwm ntawm cov kav dej hlau los tiv thaiv kev cuam tshuam tam sim lossis thauj ceev ceev, xav txog lawv cov tawv |
| Qhov taw qhia yuam |
Kev Cuam Tshuam Lub Zog(AK): Lub zog nqus los ntawm cov quav thaum nws tawg, ntsuas hauv Joules (J), ncaj qha tus yam ntxwv zoo ntawm kev nruj.
Ductile - brittle transitt Kub(DBTT): Qhov kub tseem ceeb uas ib qho kev hloov pauv ntawm ductile bacture mus rau brittle backstre |
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Kev Xeem Txoj Cai
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Tso tus qauv qauv nrog cov ntsiab lus ntawm kev txhawb nqa, thiab nqa pendulum ywj siab ntog kom tawg cov qauv ntawm ib zaug. Lub zog ploj los ntawm pendulum tom qab rhuav cov qauv ntsuas tau ntsuas, uas yog qhov cuam tshuam ua haujlwm (AK). |
| Kev faib tawm lub ntsiab |
Cais los ntawm qhov kub: qhov kub thiab txias (20 ± 5 degree), tsawg (xws li<15 to -192℃), high temperature (35 to 1000℃) impact tests;
Cais los ntawm notch:Charpy v - tsis tau thiab u - tsis muaj kev ntsuas |
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Qauv Qauv |
Tus qauv loj ntawm cov qauv yog feem ntau yog 10mm × 55 hli, nrog 2}}} zoo li cov neeg siab tshaj hauv nruab nrab |
Qhov tseem ceeb thiab qhov tseem ceeb ntawm kev ntsuas
Tus tseem ceeb ntawm cov kev ntsuas kev cuam tshuam nyob rau hauv kev ntsuas cov tawv nqaij tawv, yog, cov khoom siv muaj peev xwm nqus tau lub zog thiab yauv nyom ua ntej tawg.
1. Taw qhia qhov kev pheej hmoo ntawm qhov qis - kub tawm dag zog:
Cov hlau feem ntau muaj qhov zoo ntawm chav sov, tab sis thaum qhov kub poob mus rau hauv lub xeev tseem ceeb, nws yuav rov qab hloov mus rau hauv lub xeev loj me thiab yog ib txwm ua kom tawg. Kev ntsuas kev ntsuas, tshwj xeeb tshaj yog cov kev ntsuas kub qis- kub cuam tshuam, tuaj yeem txiav txim siab}} brittle transition kub (DBTT) ntawm cov ntaub ntawv. Qhov no yog qhov tseem ceeb rau cov qauv steel siv (xws li cov qauv txias thiab pipelines hauv qis- qhov chaw loj uas tau tshwm sim los ntawm cov khoom siv brittleness.
2. Ntsuam xyuas cov khoom tsis raug:
Ceeb toom rau cov qauv tuaj yeem simulate sab hauv lossis ntxhov siab cov ntsiab lus ntawm cov khoom siv. Cov kev xeem cuam tshuam tuaj yeem lees paub tias cov hlau tuaj yeem tseem muaj kev cuam tshuam txaus nyob rau ntawm muaj kev ntxhov siab.
3. Tswjhwm thiab cov khoom sib txawv:
Kev Cuam Tshuam Lub Zog yog qhov taw qhia tseem ceeb rau kev ntsuas qhov zoo ntawm cov hlau. Piv txwv li, nyob rau hauv qib qhia kev nqis peev ntawm carbon qauv hlau Q235, thiab d yog kev ntsuam xyuas kev cuam tshuam rau kev cuam tshuam rau cov neeg muaj kev sib tw cuam tshuam, 0 degree}}}}}}}}}}}}}}}}}}}}}}}} 20 degree. Qib siab dua, qhov siab dua qhov yuav tsum muaj rau qis-qhov kub.
Cov Tswv Yim Xaiv thiab Cov Khoom Siv Xaiv
Hauv kev tsim khoom lag luam thiab khoom lag luam, kev tsim khoom, cov txiaj ntsig ntawm cov kev kuaj feem cuam ncaj qha rau kev xaiv thiab kev nyab xeeb siv cov ntaub ntawv.
• Kev Thov Engineering:
Rau cov kab ke kav dej uas siv rau hauv cov cheeb tsam txias (xws li txuas hniav thiab lub tsev loj kom paub tseeb tias lawv tseem muaj qhov nyuaj ntawm kev siv.
• Xaiv cov khoom siv:
Thaum yuav khoom hlau kav hlau, yog tias ib puag ncig ib puag ncig yuav cuam tshuam kev cuam tshuam lossis tsis tshua muaj kev cuam tshuam, saib xyuas rau qhov yuav tsum muaj rau cov qauv khoom. Piv txwv li, rau welded qauv, tsawg kawg Q235B qib steel uas yuav tsum tau xaiv nyob rau hauv chav tsev kub, ntau dua li cov qib hlau uas tsis xav tau kev sim cuam tshuam. For cases with special requirements for low-temperature service, higher-grade steel should be selected.
Qhov sib txawv ntawm qhov kev sim cuam tshuam thiab lwm yam kev sim
Kev Ntsuas Cov Kev Ntsuas, Tensile Kev Ntsuam Xyuas thiab Kev Kuaj Hardness yog tag nrho cov khoom siv neeg kho tshuab cov cuab yeej, tab sis lawv muaj cov tsom iav sib txawv:
• vs. Tensile xeem:
Tensile cov ntawv xeem muaj kev thauj khoom qeeb thiab tsuas yog ntsuas lub zog (xws li lub zog tensile thiab tawm lub zog) thiab cov yas (xws li elongation) ntawm cov ntaub ntawv. Kev cuam tshuam kev xeem, ntawm qhov tod tes, koom siab siab- Ceev dynamic thauj khoom hauv kev tawm tsam tsis muaj lub sijhawm luv luv.
• vs. Kev Kuaj Hardness:
Kev ntsuas kev nyuaj ntawm cov khoom muaj peev xwm tiv thaiv lub ntsej muag ntawm qhov tsis muaj zog thiab muaj kwv yees hloov kev sib raug zoo nrog lub zog. Txawm li cas los xij, nws tsis tuaj yeem ncaj qha rau cov ntaub ntawv nyiam ntawm kev nruj lossis brittleness.
