Cov ceg ntawm lub seam thaum vuam: txhais thiab cov txheej txheem suav

Cov txheej txheem:

Cov ceg ntawm lub seam thaum vuam: txhais thiab cov txheej txheem suav
Cov ceg ntawm lub seam thaum vuam: txhais thiab cov txheej txheem suav

Video: Cov ceg ntawm lub seam thaum vuam: txhais thiab cov txheej txheem suav

Video: Cov ceg ntawm lub seam thaum vuam: txhais thiab cov txheej txheem suav
Video: New Laj Tsawb Hlub Tsis Muaj Tso Yuav Nciam Ntawm Koj Mus 2024, Kaum ib hlis
Anonim

Hauv kev tsim kho, thaum vuam cov hlau loj heev ntawm cov pob qij txha, cov khoom hnyav tshwm sim, uas, yog tias tsis ua raws li thev naus laus zis, ua rau muaj kev pheej hmoo ntawm kev tawg ntawm cov qauv. Qhov no yog qhov tseem ceeb hauv kev lag luam nkoj thiab kev siv tshuab tshuab (thaum tsim cov tshuab loj loj tsis siv neeg), hauv kev tsim cov tsev loj. Kev sib txuas zoo yuav tsum tau suav thawj zaug kom tsis txhob muaj qhov deformations yav tom ntej. Txoj hauv kev yooj yim tshaj plaws los xyuas qhov tseeb ntawm cov kab weld yog kom paub cov ceg ntawm cov seam.

Cov ceg ntawm qhov vuam yog hu ua ceg ntawm daim duab peb sab, uas haum rau hauv ntu ntu. Tsis muaj ib daim duab uas yuav dhau los ua qhov taw qhia ntawm kev txhim khu kev qha thiab zoo seam thaum txiav txim siab nws txhais ceg. Qhov loj dua qhov luaj li cas ntawm daim duab peb sab isosceles uas tuaj yeem nkag mus rau hauv lub seam, qhov loj dua qhov nws tuaj yeem tiv taus. Feem ntau tus yam ntxwv no nyob ntawm hom hlau thiab qhov voltage txwv rau nwstuaj yeem tiv taus. Kev nce hauv ceg ua rau muaj qhov cuam tshuam - ib feem yog deformed thiab yuav tsis tuaj yeem ua haujlwm hauv hom xav tau.

seam ceg
seam ceg

Yuav ua li cas txiav txim siab qhov loj ntawm ceg?

txhawm rau txiav txim siab qhov zoo tshaj plaws welded sib koom ua ke, koj yuav tsum xam cov seam, thiab tseem txiav txim siab ntawm lub seam thaum vuam. Cov hauv qab no yog muab rau hauv tus account:

  • thickness ntawm hlau blanks;
  • txoj hauj lwm ntawm qhov txheeb ze rau ib leeg;
  • hom seam siv thaum koom.

Rau txhua yam khoom, txhais ceg raug xaiv tus kheej, tab sis ntawm no peb tab tom tham txog kev ua haujlwm nrog cov khoom hnyav. Rau kev siv vuam ntiag tug, kev suav zoo tsis xav tau, tab sis tseem cov kws tshaj lij coj mus rau hauv tus account cov khoom ntawm cov hlau thiab sim ua kom cov seam muaj zog thiab tsis ua mob rau cov ntsiab lus. Cov ceg ntawm lub seam yog teem rau ntawm ntug yog tias ob qhov chaw muaj tib lub thickness. Yog tias txawv, ces txhais ceg txiav txim siab los ntawm cov hlau nyias. Nws yog ib qho tseem ceeb los xaiv thiab xam nws qhov loj me kom raug. Tom qab tag nrho, lub siab tshaj plaws hwj chim uas ib feem tuaj yeem tiv taus nyob ntawm qhov no. Cov ceg ntawm cov vuam yog txiav txim siab los ntawm GOST 5264-80 tus qauv txheej txheem.

ceg ntawm seam thaum vuam
ceg ntawm seam thaum vuam

Cov ceg ntawm lub seam thaum vuam yog sib npaug ntawm cov tuab ntawm cov nplooj ntawv nrog cov sib tshooj sib tshooj, tab sis tib lub sijhawm nws yuav tsum tsis pub tshaj 4 hli. Yog tias qhov ntsuas no ntau dua, ces koj yuav tsum noj 40% ntawm cov hlau tuab thiab ntxiv 2 hli. Txoj kev no koj tuaj yeem txiav txim siab tus nqi siab tshaj plaws ntawm ceg ntawm seam.

Yuav ua li cas xaiv ib ceg?

Cov ceg ntawm lub seam yog txiav txim siab thaum vuam qhov cuab lub zog zoo ib yam li thaum sib koomlwm yam khoom siv hlau. Qhov luaj li cas nyob ntawm ntau qhov tsis sib xws, nrog rau txoj haujlwm ntawm qhov khoob, lawv qhov ntev thiab tuab. Cov kws tshaj lij siv cov qauv uas cov welders tau tsim ua ntej lawv. Lub ntsiab parameter yog qhov ntev ntawm qhov vuam, vim nws yog nws uas cuam tshuam rau lub zog ntawm cov qauv yav tom ntej. Cov khoom siv thiab qhov yuav tshwm sim ntawm deformation yog qhov kev phom sij tseem ceeb nrog txoj hlua ntev. Ntau yam nyob ntawm hom seam uas yuav txuas cov khoom.

ceg ntawm lub seam thaum lub sij hawm vuam yog sib npaug
ceg ntawm lub seam thaum lub sij hawm vuam yog sib npaug

pob weld

Lub pob tw weld suav nrog cov thev naus laus zis hauv qab no - txhawm rau txuas ob lub taub qab vuam cov ntsiab lus (piv txwv li, npaj cov khoom nrog qhov kawg ntawm qhov chaw hauv tib lub dav hlau sib txawv). Muaj ntau tshaj 30 hom pob qij txha, txhua tus yog muab los ntawm GOST. Nyob rau hauv cov ntaub ntawv no, lub dependence ntawm lub thickness ntawm lub welded ntsiab, cov cuab yeej thiab vuam tshuab yog nqa tawm. Yog tias tus qauv yuav raug kev nyuaj siab ntawm qhov sib txawv, ces qhov kev sib tshuam no yog qhov kev ntseeg siab tshaj plaws. Ntau qhov chaw tuaj yeem koom nrog thiab welded. Nws tuaj yeem ua tsis tau tsuas yog cov ntawv hlau, tab sis kuj yog cov kav dej, cov ces kaum, raws. Txhawm rau vuam ob nplooj ntawv, lawv tsis tas yuav tsum tau sib cuag nrog ib leeg - vuam yog nqa tawm nrog qhov tsawg kawg nkaus ntawm ob qhov khoob.

ceg ntawm lub seam thaum welding formula
ceg ntawm lub seam thaum welding formula

Splice

Op-joining yog ib txoj kev vuam uas cov khoom sib npaug thiab lawv cov npoo sib tshooj. Tsis zoo li lub vuam, tsuas muaj ob hom kev sib tshooj sib tshooj. Qhov kawg ntawm cov khoom tuaj yeem welded nrogob sab los yog ib qho. Kuj tseem muaj kev sib txuas uas siv lub ncoo ntxiv, uas yog welded rau ob ntu, txuas rau ntawm lub kaum sab xis. Cov khoom yog sib tshooj siv ob hom seams - kawg thiab frontal. Lub vuam hom nrog qhov kev sib txuas no yuav siab dua, vim tias tsis muaj kev phom sij ntawm kev kub hnyiab ntawm qhov chaw.

Txoj kev sib txuas

Vuam ntawm ob ntu, cov npoo ntawm qhov chaw nyob ntawm lub kaum sab xis ntawm ib leeg, tshwm sim los ntawm txoj kev sib txuas ntawm fillet. Tus qauv txawv txog li 10 hom ntawm cov pob qij txha. Qee lub sij hawm, rau lub zog thiab kev ntseeg siab ntawm cov welding, cov txheej txheem hlau tshwj xeeb yog siv, uas tso cai rau kev sib koom ua ke zoo dua ntawm cov khoom thiab ua rau cov qauv txhim khu kev qha. Nyob rau hauv cov txheej txheem load-bearing, hom kev sib txuas no tsis tshua pom, yog li, kev suav rau cov seams no tsis tau ua. Txawm li cas los xij, yog tias hom vuam no tsim nyog, suav nrog kev sib piv nrog tee sib koom ua ke thiab hom vuam yuav tsum raug coj mus rau hauv tus account.

ceg ntawm seam thaum vuam yuav ntsuas li cas
ceg ntawm seam thaum vuam yuav ntsuas li cas

T-weld sib koom

Nws feem ntau dhau los ua qhov tsim nyog los txuas cov ntsiab lus uas nyob hauv cov dav hlau sib txawv. Qhov kev daws teeb meem zoo tshaj plaws hauv qhov no yog tee sib koom ua ke, qhov kawg ntawm ib qho workpiece txuas rau lwm qhov ntawm txoj cai lossis lwm lub kaum sab xis. Cov hom kev sib txuas no txawv ntawm 9 hom muab los ntawm GOST. Ib lub tee sib koom ua ke yuav tsum tau nkag mus tob rau ntawm qhov sib txuas, cov seam feem ntau yog ua los ntawm kev siv vuam tsis siv neeg, lossis cov npoo tau npaj ua ntej, piv txwv li, nrog cov hlua khi, uas tuaj yeem ua tau manually, lossis pob tw. hom seam,uas qhov kev sib txuas tau ua rau cuam tshuam rau nws txoj kev suav. Qhov no yuav siv sij hawm mus rau hauv tus account lub fact tias cov weld, pre-kho, yuav muaj zog npaum li cas ntawm lub hauv paus hlau.

Seam quality control

Nyob rau hauv ib qho ntawm cov seams, ib tug yuav tsum tsis txhob hnov qab txog ceg ntawm lub seam thaum welding, cov mis uas tsis nyuaj thiab muaj nyob rau hauv kev txiav txim lub thickness ntawm cov hlau. Yog tias nws tsawg dua 4 hli, ces txhais ceg tau muab sib npaug rau nws, yog tias ntau dua, tom qab ntawd nyob rau hauv thaj tsam ntawm 40% - 45% ntawm lub thickness nrog nce 2 hli. Cov mis rau kev xam cov ceg: T=S cos 45º, ntawm no T yog cov ceg yuav tsum tau, thiab S yog lub hypotenuse lossis qhov dav ntawm cov hlaws weld.

ceg ntawm lub seam thaum welding reinforcement
ceg ntawm lub seam thaum welding reinforcement

Nws tsis yog qhov nyuaj los tswj kev sib txuas ntawm cov khoom ua haujlwm, thaum siv cov kev pom thiab cov cuab yeej (siv cov cuab yeej). Ib qho cuab yeej tau tsim los txiav txim siab ntawm ceg ntawm lub seam thaum vuam. Yuav ua li cas ntsuas lub seam ntawm kev txaus siab rau lawv? Txhawm rau ua qhov no, koj yuav tsum tau muab cov cuab yeej txuas mus rau ob feem ntawm lub workpiece, thiab ncaj qha nruab nrab mus rau lub seam, tom qab ntawd sau cov ntsuas thiab ua raws li kev suav yooj yim. Feem ntau cov seam hloov mus rau convex, tab sis qhov no yog qhov kev xaiv tsis txaus ntseeg tshaj plaws. Tom qab tag nrho, nws yog nyob rau hauv daim ntawv no uas nro yog concentrated.

Qhov kev xaiv zoo tshaj plaws yog lub seam concave, uas nyuaj heev kom tau txais. Ntawm no koj yuav tsum tau soj ntsuam qhov ceev ntawm vuam, nrog rau kom ua tiav cov haujlwm raug ntawm lub tshuab vuam. Cov kws tshaj lij craftsmen yuav muaj peev xwm ua tau xws li seam. Tab sis ntau zaus nws tau txais mechanically, tsuas yog txiav tawm qhov tsis tsim nyog ntawm seam.

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