Izvo ma welder anofanirwa kuziva Macroscopic ongororo yeweld defects

Izvo zvinodikanwa zvemhando yezvimiro zvakashongedzwa, zvigadzirwa zvakasungwa, uye majoini akaiswa ane mativi mazhinji.Zvinosanganisira zvinodiwa mukati sekuita pamwe chete uye sangano.Panguva imwecheteyo, hapafanirwe kuve nekukanganisa muchitarisiko, chimiro, saizi chaiyo, weld seam kuumbwa, pamusoro uye mukati zvikanganiso.Kuti uzvione nekukurumidza sezvinobvira, Kugadzirisa matambudziko, kuongorora macroscopic kunowanzo shandiswa kutanga, kuchiteverwa nekuongorora kwakadzama microscopic kana zvichidikanwa.

Iyo inonyanya kukosha yemukati yekuongorora macro is defect kuongororwa kwemajoini akasungwa.Kunyanya kushandisa yakaderera-magnification chimiro chekuongorora nzira yemetallographic microscope, hurema hwemukati hunogadzirwa nemajoini akasungwa anoongororwa kuburikidza nemetallographic yakaderera-magnification, uye zvikonzero zvekukanganisika zvinotemerwa neiyo yepamusoro-magnification microstructure ongororo, uye nzira dzekudzivirira uye. kubviswa kunowanikwa kuvandudza hutano hwemajoini akasungwa.quality.

Nekuita sampling, kukuya, kupinza uye kutora yakaderera-magnification mafoto, isu tinogona zvakajeka uye intuitively kutarisa macroscopic kukanganisa kwemajoini akaiswa, uye akasanganiswa neanoenderana welding zviyero, tinogona kutonga kana iyo welding process, welding vashandi, uye welding zvimiro zvinogona kusangana. zvinodiwa zvakakodzera.Zvinodiwa.

Zvinoenderana nechikonzero chekuumbwa uye chimiro chakaremara, weld macro defects inogona kunyanya kukamurwa muzvikamu zvinotevera:

1. Stomata

Munguva yekristallisation process yewelding pool, mamwe magasi anogona kuramba ari mugirazi rewelding kuti agadzire pores nekuti haana nguva yekupukunyuka.

Porosity chirema chinowanzoitika mumajoini akasungwa.Porosity haingooneki chete pamusoro peiyo weld, asi inowanzoonekwa mukati meweld.Hazvisi nyore kuona nemaitiro akareruka panguva yekugadzira welding, izvo zvinokonzeresa kukuvadza kwakanyanya.

Welding pores anoitika mukati meweld anonzi maburi emukati, uye maburi anovhurika kunze anowanzonzi maburi epamusoro.

2. Slag kubatanidzwa
Slag inclusion is slag yakanyungudutswa kana zvimwe zvisiri-metallic inclusions mu weld, izvo zvinowanzoitika kukanganisa mu weld.

Muwelding uchishandisa flux-yakazadzwa nesimbi waya, seyakadzika arc welding, guruva rinova slag nekuda kwekushata deposition, kana mu CO2 welding nzira isina flux, deoxidation chigadzirwa chinoburitsa slag, inoramba iri mukati me-multi-layer weld metal.Inogona kugadzira slag inclusions.

3. Kupinda kusina kukwana uye fusion
Kupinda kusina kukwana kunoreva chikamu chakasara pamudzi wejoinhi chisina kunyatsopindwa panguva yewelding.

Kushaikwa kwemusanganiswa chinhu chinowanzoitika.Zvinoreva mukaha wasara wepanzvimbo pakati pesimbi yakanyungudutswa neye base base simbi kana pakati pepadhuze neweld bead uye weld layers.Iyo base simbi uye base simbi haina kunyungudutswa uye kusanganiswa panguva yenzvimbo welding.Vamwe vanonzi vasina kusanganiswa.

Xinfa welding midziyo ine hunhu hwemhando yepamusoro uye mutengo wakaderera.Kuti uwane rumwe ruzivo, ndapota shanya: Welding & Cutting Manufacturers - China Welding & Cutting Factory & Suppliers (xinfatools.com)

4. Mitswe
Welding makatsemuka akakamurwa inopisa makatsemuka (crystal makatsemuka, yakakwirira-tembiricha liquefaction makatsemuka, polygonal makatsemuka), kutonhora makatsemuka (kunoke kutsemuka, kuomesa embrittlement mitswe, pasi plasticity makatsemuka), reheat makatsemuka, uye lamellar misodzi maererano chimiro chavo uye zvikonzero.Mutswe nezvimwe.

5. Undercut
Undercut dzimwe nguva inonzi undercut.Iro groove yakadzikira kupfuura pamusoro pesimbi yepasi pachigunwe cheweld nekuti simbi yaiswa haivharidzi zvachose chikamu chakanyunguduka chesimbi yepasi panguva yewelding.Ndiyo mhedzisiro yewelding arc inonyungudika mupendero we weldment.Mukaha wakasiiwa nesimbi yakanyungudutswa kubva patsvimbo yewelding hauzadziswe.

Iyo undercut yakadzika zvakanyanya inonetesa simba rejoinhi uye inogona kukonzera kukanganisa kwechimiro pane undercut.

6. Humwe hurema
Pamusoro pekuremara kuri pamusoro apa, kukanganisa kwakajairika muwelds kunosanganisira looseness, kutonhora kuvharwa, kupisa-kuburikidza, weld nodules, shrinkage cavities, makomba, sag, kusaenzana weld wegumbo saizi, yakawandisa concavity / convexity, uye isiriyo weld toe angle.wait.