Litlhoko tsa boleng bakeng sa meaho e cheselitsoeng, lihlahisoa tse cheselitsoeng, le manonyeletso a cheselitsoeng li na le likarolo tse ngata.Li kenyelletsa litlhoko tsa ka hare tse kang ts'ebetso e kopanetsoeng le mokhatlo.Ka nako e ts'oanang, ha hoa lokela ho ba le bofokoli ponahalong, sebōpeho, ho nepahala ha boholo, ho thehoa ha seam weld, bofokoli ba bokaholimo le ka hare.E le ho li lemoha kapele kamoo ho ka khonehang, Ho rarolla mathata, tlhahlobo ea macroscopic hangata e sebelisoa pele, e lateloa ke tlhahlobo e qaqileng ea microscopic ha ho hlokahala.
Litaba tsa bohlokoa ka ho fetisisa tsa tlhahlobo ea macro ke tlhahlobo ea bofokoli ba manonyeletso a cheselitsoeng.Haholo-holo ho sebelisoa mokhoa oa tlhahlobo ea sebopeho se tlase-tlase oa microscope ea metallographic, bofokoli bo ka hare bo hlahisoang ke manonyeletso a tjheselitsoeng bo hlahlojoa ka metallographic low-magnification, 'me lisosa tsa bofokoli li khethoa ka tlhahlobo e phahameng ea magnification microstructure, le mekhoa ea ho qoba le ho felisoa ho fumanoa ho ntlafatsa boleng ba manonyeletso a cheselitsoeng.boleng.
Ka lisampole, ho sila, ho cheka le ho nka lifoto tse fokolang haholo, re ka hlahloba ka ho hlaka le ka mokhoa o hlakileng liphoso tsa macroscopic tsa manonyeletso a tjheseletsang, 'me re kopantsoe le litekanyetso tse lumellanang tsa welding, re ka ahlola hore na ts'ebetso ea ho tjheseletsa, basebetsi ba tjheseletsa le meaho ea tjheseletsa e ka kopana. ditlhoko tse amehang.Litlhoko.
Ho latela sesosa sa sebopeho le sebopeho se nang le sekoli, bofokoli ba weld macro bo ka aroloa haholo ka mekhahlelo e latelang:
1. Stomata
Nakong ea ts'ebetso ea crystallization ea letamo la welding, likhase tse ling li ka 'na tsa sala ka seiponeng sa ho cheselletsa ho etsa li-pores hobane ha li na nako ea ho baleha.
Porosity ke phoso e tloaelehileng ho manonyeletso a cheselitsoeng.Porosity ha e hlahe feela holim'a weld, empa hape e atisa ho hlaha ka hare ho weld.Ha ho bonolo ho lemoha ka mekhoa e bonolo nakong ea tlhahiso ea welding, e tla baka kotsi e tebileng.
Li-welding li-pores tse hlahang ka hare ho weld li bitsoa li-internal pores, 'me li-pores tse bulehang ka ntle hangata li bitsoa li-surface pores.
2. Ho kenyelletsoa ha Slag
Ho kenyelletsoa ha Slag ke slag e entsoeng ka ho qhibilihisoa kapa li-inclusions tse ling tse se nang tšepe ka har'a weld, e leng phoso e tloaelehileng ho weld.
Ka ho tjheseletsa ho sebelisa terata ea tšepe e tletseng flux, joalo ka ho tjheseletsa arc ka tlas'a metsi, lerōle le fetoha slag ka lebaka la ho behoa ho fokolang, kapa ka mokhoa oa CO2 oa ho cheselletsa ntle le ho phalla, sehlahisoa sa deoxidation se hlahisa slag, e setseng ka har'a tšepe ea mefuta e mengata.E ka theha li-inclusions tsa slag.
3. Ho kenella ho sa lekaneng le ho kopanya
Ho kenella ho sa phetheheng ho bolela karolo e setseng motso oa lenonyeletso e sa keneng ka ho feletseng nakong ea ho cheselletsa.
Ho hloka fusion ke phoso e tloaelehileng.E bua ka lekhalo le setseng la sebaka pakeng tsa tšepe e entsoeng ka ho qhibilihisoa le tšepe ea motheo kapa pakeng tsa lifaha tse haufi le li-weld layers.Litšepe tsa motheo le tšepe ea motheo ha li qhibilihe ka ho feletseng le ho kopanngoa nakong ea ho cheselletsa letheba.Tse ling li bitsoa tse sa tsoakoang.
Thepa ea welding ea Xinfa e na le litšobotsi tsa boleng bo holimo le theko e tlase.Bakeng sa lintlha, ka kopo etela: Baetsi ba Welding & Cutting Manufacturers - China Welding & Cutting Factory & Suppliers (xinfatools.com)
4. Mapetso
Mapetso a tjheseletsang a arotswe ka mapetso a tjhesang (mapetso a kristale, mapetso a metsi a mocheso o phahameng, mapetso a polygonal), mapetso a batang (mapetso a liehang, mapatso a thata a embrittlement, mapetsong a tlaase a polasetiki), mapetso a futhumatsang hape, le meokho ea lamellar ho latela sebōpeho le lisosa tsa tsona.Crack joalo-joalo.
5. Undercut
Ka linako tse ling Undercut e bitsoa undercut.Ke groove e ka tlaase ho holim'a tšepe ea motheo ka monoana oa weld hobane tšepe e kentsoeng ha e koahele ka ho feletseng karolo e qhibilihisitsoeng ea tšepe ea motheo nakong ea welding.Ke phello ea arc ea welding e qhibilihisang moeli oa weldment.Lekhalo le siiloeng ke tšepe e qhibilihisitsoeng ho tloha molamung oa ho cheselletsa ha le eketsehe.
Undercut e tebileng haholo e tla fokolisa matla a manonyeletso mme e ka boela ea baka tšenyo ea sebopeho sebakeng sa undercut.
6. Litšitiso tse ling
Ho phaella ho mefokolo e ka holimo, mefokolo e tloaelehileng ea li-welds e kenyeletsa looseness, mocheso o batang, ho chesa, li-nodule tsa weld, li-shrinkage cavities, likoti, sag, boholo ba leoto le sa lekaneng, concavity e feteletseng / convexity, le angle e fosahetseng ea leoto la weld.ema.
Nako ea poso: May-27-2024
