Hom Thiab Yam Tseem Ceeb Ntawm Vuam Distortion

• General vuam deformation yog muab faib ua ob hom: dav deformation thiab hauv zos deformation. Hauv cov qauv tiag tiag, ob hom deformation muaj nyob ib txhij. Zuag qhia tag nrho deformation yog ib qho kev hloov ntawm qhov loj lossis cov duab ntawm tag nrho cov qauv, uas feem ntau tshwm sim nyob rau hauv daim ntawv ntawm longitudinal thiab transverse shrinkage deformation, khoov deformation thiab warping deformation. Hauv kev tsim cov qauv welded, tsis tsuas yog tag nrho deformation ntawm cov qauv tshwm sim, tab sis kuj angular thiab wavy deformation ntawm cov cheeb tsam ntawm cov qauv.

Tsis tas li ntawd, vuam residual deformation tuaj yeem categorized li nyob rau hauv dav hlau thiab tawm ntawm lub dav hlau deformation.

• Transverse shrinkage ntawm welded pob qij txha

Raws li qhov ntev ntawm qhov sib koom welded, lub transverse shrinkage yog uniform. Txawm li cas los xij, qhov no tsis yog qhov tseeb hauv pob qij txha, tshwj xeeb tshaj yog pob qij txha nrog ntev weld seams. Qhov no yog vim qhov tseeb welded lug feem ntau muaj txoj kev sib hloov shrinkage, ua rau lub transverse shrinkage ntawm qhov sib koom tsis sib xws. Muaj ob qho laj thawj rau qhov tsis sib xws ntawm kev sib hloov shrinkage; Firstly, lub pob tw pob tw yuav tig thiab deform raws li lub phaj yog welded los ntawm ib kawg mus rau lwm yam, uas nyob ntawm seb cov nyhuv ntawm cov weld kab zog thiab qhov chaw weld txoj hauj lwm. Qhov thib ob yog tias qhov kev sib hloov ntawm qhov sib txuas ntawm cov weld thiab ze-seam cheeb tsam cuam tshuam los ntawm qhov kev txwv, feem ntau qhov kev txwv ntau dua, qhov me dua qhov deformation, qhov loj dua qhov seem ntawm kev ntxhov siab.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Longitudinal deformation ntawm welded pob qij txha

Nyob rau hauv cov txheej txheem vuam, lub ntsiab yog vim li cas rau cov yas deformation cheeb tsam generated nyob rau hauv lub weld thiab nws cheeb tsam yog lub longitudinal deformation, thiab lub hav zoov ntawm cov yas deformation cheeb tsam ntawm pob tw pob qij txha yuav inevitably ua rau longitudinal dabtsi yog khoov deformation los yog longitudinal shortening ntawm weldment.
Lub longitudinal deformation ntawm lub phaj yog nyob ntawm qhov chaw weld cross-sectional, weld ntev thiab yas deformation cheeb tsam ntim, thiab muaj feem xyuam rau txoj kev vuam, vuam zog thiab txheej txheem vuam.

• Angular deformation

Angular deformation feem ntau tshwm sim nyob rau hauv vuam ntawm overlays, qhib bevelled pob qij txha, ceg tawv pob qij txha thiab T-kos. Cov ntaub ntawv sib txawv thiab cov welds muaj cov yam ntxwv sib txawv, thiab qhov deformation angular feem ntau yog tshwm sim los ntawm qhov sib txawv tsis sib xws raws li cov thickness kev taw qhia.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Kev deformation ntawm buckling

Welded nyias phaj Cheebtsam kom nyob deb ntawm cov seem compressive kev nyuaj siab nyob rau hauv lub weld cheeb tsam, yuav ua rau lub welded phaj buckling deformation, yuav tsum tau txiav txim seb lub yoj deformation yog tshwm sim los ntawm buckling kev nyuaj siab los yog tshwm sim los ntawm dabtsi yog khoov. Qhov ua rau buckling deformation tsis tsuas yog txawv ntawm dabtsi yog khoov deformation, tab sis kuj txawv ntawm cov duab thiab loj.