① Lub xeev xa khoom
Lub xeev xa khoom txhais tau hais tias lub xeev ntawm qhov kawg ntawm cov yas deformation lossis kev kho cua sov kawg ntawm cov khoom xa tuaj. Feem ntau, cov khoom xa tuaj yam tsis muaj kev kho cua sov yog hu ua kub-kuav los yog txias-draw (dov) xeev; cov khoom xa tuaj nrog kev kho cua sov yog hu ua lub xeev kho cua sov, los yog lawv tuaj yeem hu ua normalizing, quenching thiab tempering, daws, annealing xeev. Lub xeev tus me nyuam yuav tsum tau qhia nyob rau hauv daim ntawv cog lus thaum xaj.
② Kev xa tawm raws li qhov hnyav lossis qhov hnyav
Qhov hnyav tiag tiag - cov khoom xa tuaj raws li qhov ntsuas qhov hnyav (ntawm qhov ntsuas);
Qhov hnyav theoretical - thaum xa khoom, qhov hnyav ntawm cov khoom raug xam raws li qhov nominal loj ntawm cov khoom siv hlau. Cov mis laij lej yog raws li hauv qab no (yog tias cov khoom xa tuaj raws li qhov hnyav theoretical, nws yuav tsum tau qhia hauv daim ntawv cog lus)
Kev suav cov mis rau qhov ntsuas qhov hnyav (qhov ntom ntawm cov hlau yog 7.85 kg / dm3) ib 'meter' ntawm steel raj:
W = 0.02466 (DS) S
Hauv cov qauv:
W — theoretical hnyav ib 'meter' ntawm steel raj, kg / m;
D - nominal sab nraud txoj kab uas hla ntawm steel raj, mm;
S - nominal thickness ntawm phab ntsa ntawm steel raj, mm.
③ Cov xwm txheej lav
Raws li cov kev cai hauv cov qauv tam sim no, kev sim cov khoom lag luam thiab xyuas kom ua raws li cov kev cai ntawm tus qauv yog hu ua cov kev lav phib xaub. Kev lees paub kuj tseem tuaj yeem muab faib ua:
A 、 Cov xwm txheej yooj yim lav (tseem hu ua cov xwm txheej tsim nyog). Txawm hais tias lawv tau teev nyob rau hauv daim ntawv cog lus los ntawm tus neeg siv khoom, koj yuav tsum tau tshuaj xyuas cov khoom no raws li cov kev cai hauv tus qauv, thiab xyuas kom meej tias qhov kev xeem tau ua tau raws li cov kev cai hauv tus qauv. Piv txwv li, cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, qhov sib txawv ntawm qhov sib txawv, qhov zoo ntawm qhov chaw, kev puas tsuaj, kev ntsuas dej siab lossis kev sim thev naus laus zis xws li nias lub tiaj thiab lub raj kawg nthuav tawm yog txhua yam tsim nyog.
B, Daim ntawv cog lus lav cov xwm txheej: ntxiv rau cov kev lav phib xaub yooj yim, tseem muaj "raws li cov neeg yuav khoom, cov xwm txheej yuav tsum tau sib tham los ntawm ob tog, thiab cov xwm txheej yuav tsum tau qhia hauv daim ntawv cog lus" lossis "yog tias tus neeg yuav xav tau ..., nws yuav tsum tau qhia nyob rau hauv daim ntawv cog lus "; Qee cov neeg siv khoom muaj cov kev cai nruj dua ntawm cov qauv kev lees paub (xws li cov khoom sib xyaw, cov khoom siv kho tshuab, qhov sib txawv ntawm qhov sib txawv, thiab lwm yam) lossis nce cov khoom kuaj (xws li elpticity, tsis sib luag phab ntsa thickness, thiab lwm yam). Tshaj li cov kev cai thiab cov kev cai yuav tsum tau sib tham los ntawm ob tog ntawm tus neeg muag khoom thiab cov neeg yuav khoom, Daim Ntawv Pom Zoo Technology yuav tsum tau kos npe, thiab cov kev cai yuav tsum tau qhia hauv daim ntawv cog lus. Yog li, cov xwm txheej no tseem hu ua kev cog lus lav cov cai. Feem ntau, cov nqi ntawm cov khoom nrog kev pom zoo lav cov xwm txheej yuav tsum tau nce ntxiv.
④ "Batch" nyob rau hauv "batch standard" txhais tau tias ib chav kuaj xyuas, piv txwv li. tshuaj xyuas batch. Lub batch muab faib los ntawm chav tsev xa khoom yog hu ua "delivery batch". Yog tias cov khoom xa tuaj loj heev, cov khoom xa tuaj yuav suav nrog ntau qhov kev kuaj xyuas; Yog tias cov khoom xa tuaj me me, ib qho kev tshuaj xyuas batch yuav suav nrog ntau qhov khoom xa tuaj. Cov khoom xyaw ntawm "batch" feem ntau yog tswj raws li hauv qab no (saib cov qauv muaj feem xyuam):
A 、 Txhua pawg yuav tsum tau tsim los ntawm cov raj hlau ntawm tib tus qauv (qib steel), tib lub boiler (tank) tus naj npawb los yog tib tus niam boiler tooj cua sov, tib yam specifications thiab tib lub tshav kub kho system (boiler tooj).
B, Raws li qhov zoo ntawm cov pa roj carbon steel yeeb nkab thiab cov raj dej, cov batch tuaj yeem tsim los ntawm tib tus qauv, tib qhov tshwj xeeb thiab tib qhov kev kho cua sov (tus naj npawb boiler) ntawm cov boilers sib txawv ( tank ).
C, Txhua batch ntawm welded steel hlab yuav tsum yog tsim los ntawm tib tus qauv (steel qib) thiab tib specification.
⑤ Cov hlau zoo thiab cov hlau tsis zoo
Hauv GB / T699-1999 thiab GB / T3077-1999 cov qauv, cov hlau uas nws cov qauv nrog "A" yog cov hlau zoo, ntawm qhov tsis sib xws, cov hlau yog cov hlau zoo. Senior zoo steel yog ua ntej ntawm cov hlau zoo ntawm cov nram qab no ib nrab los yog tag nrho:
A, Txo qhov ntau ntawm cov ntsiab lus muaj pes tsawg leeg;
B, Txo cov ntsiab lus ntawm cov khoom tsis zoo (xws li sulfur, phosphorus thiab tooj liab);
C, Ua kom huv huv dua (cov ntsiab lus ntawm cov khoom tsis yog hlau yuav tsum me me);
D 、 Ua kom cov khoom siv kho tshuab siab dua thiab cov khoom siv thev naus laus zis.
⑥Longitudinal kev taw qhia thiab transverse kev taw qhia
Nyob rau hauv tus txheej txheem, cov longitudinal kev taw qhia yog parallel nrog cov kev taw qhia ua (ie. raws li kev coj ua); transverse kev taw qhia yog ntsug nrog cov kev coj ua (kev coj ua yog cov kev taw qhia axial ntawm steel raj).
Thaum lub sij hawm qhov kev ntsuam xyuas, qhov tawg ntawm qhov ntev ntawm cov qauv yuav tsum yog ntsug nrog kev coj ua, yog li nws yog hu ua transverse tawg; qhov tawg ntawm cov qauv transverse yuav tsum ua tib yam nrog kev coj ua, yog li nws yog hu ua longitudinal fracture.
Post lub sij hawm: Nov-16-2018
