Welding mitswe sekirasi inokuvadza zvakanyanya yekuremara kwewelding, inokanganisa zvakanyanya kuita uye kuchengetedzwa uye kuvimbika kweakasungwa zvimiro. Nhasi, tichakutora iwe kuti uzive imwe yemhando dzekutsemuka - laminated cracks.
01
Non-metallic inclusions, ndiro yesimbi mukugadzirisa kunenge kusina-metallic inclusions mukati mesimbi, nezvimwewo (zvakadai se sulfides, silicates) yakakungurutswa mubhendi rinoenderana negwaro rekukunguruka, zvichiita kuti pave nekusiyana-siyana mumagetsi emagetsi. simbi, inclusions vari welded zvivako kubudisa laminar kubvarura zvingangoitika zvinhu, asiwo chikonzero chikuru kugadzirwa laminar kubvarura.
02
Constraint stress, nekuda kwe welding thermal cycle, welded majoini achaonekwa anomanikidza simba, kune yakapihwa yakakungurutswa gobvu ndiro T-yakaita uye yakachinjika majoini, mune welding parameters pasi pemamiriro emamiriro akafanana, pane yakakosha kumanikidza kushushikana kana kukotama. kumanikidzira simba, kana yakakura kudarika iyi kukosha inowanzoitika kubudisa laminar kubvarura.
03
Kupararira kwehydrogen, hydrogen inokurudzira kuputika, nekuda kwekupararira kwehydrogen uye kusanganiswa kuva molecule kuitira kuti kushushikana kwepanyika kuwedzere zvakanyanya, apo hydrogen yakaungana mune inclusions pamagumo ekusimudzirwa kwevasina-metallic inclusions uye kurasikirwa kwesimbi. yekunamatira, uye ichabviswa kubva kune yakavakidzana inclusions musimbi, mukutsemuka kwehydrogen fracture maitiro.
04
Mubereki zvinhu zvinhu, kunyange inclusions ndicho chikuru chinokonzera laminar kubvarura, asi michini zvinhu simbi anewo anokosha zvikuru kukanganisa laminar kubvarura. Iyo yakashata yepurasitiki kusimba kwesimbi, iyo inonyanya kutsemuka kuwedzera, ndiko kuti, kushomeka kushomeka kune laminar kubvaruka.
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Xinfa welding midziyo ine hunhu hwemhando yepamusoro uye mutengo wakaderera. Kuti uwane ruzivo, ndapota shanya:Welding & Cutting Manufacturers - China Welding & Cutting Factory & Suppliers (xinfatools.com)
Kuti udzivise chizvarwa chekutsemuka kwema laminar, chinhu chikuru mukugadzira uye kuvaka maitiro ndechekudzivirira Z-direction kushushikana uye kushushikana kushushikana, iwo chaiwo matanho ndeaya anotevera:
1. Kuvandudza dhizaini yekubatana kuti uderedze dhizaini yakamanikidzwa. Matanho chaiwo akadai se: achatungamira arc plate yekupedzisira yekuwedzera kwehumwe hurefu, kuve nemhedzisiro yekudzivirira kuputika; shandura gadziriro yeweld kuti uchinje kutungamira kweiyo weld contraction stress, vertical arc plate kuenda kune yakatwasuka arc plate, shandura nzvimbo yeweld, kuitira kuti mubatanidzwa weiyo yakazara kutungamira kwesimba rinoenderana neyakatenderedzwa layer, inogona kuvandudza zvakanyanya. kushanda kweiyo anti-laminar kubvarura.
2. Gamuchira nzira yakakodzera yewelding, kushandisa yakaderera hydrogen welding nzira yakanaka, senge gasi shielded welding, undermerged arc welding cold crack tendency idiki, inobatsira kuvandudza mashandiro e-anti-laminar kubvarura.
3. Kushandiswa kwezvinhu zvakaderera-simba zvinofananidza welding zvinhu, weld simbi ine yakaderera goho poindi, yakakwirira ductility, nyore kuita strain yakanamirwa mu weld uye kuderedza kupisa-kukanganisa nzvimbo ye base base zvinhu strain, inogona kuvandudza kushanda. ye anti-laminar kubvarura.
4. Mukushandisa welding tekinoroji, kushandiswa kwechiso chepamusoro chekuzvitsaura; symmetrical welding, kuitira kuti kugovanisa kugovane kwakaenzana, kuderedza kushushikana.
5. Kuti tidzivirire kuputika kwe laminar kunokonzerwa nekuputika kwechando, tinofanira kuedza nepatinogona napo kutora mamwe matanho ekudzivirira kuputika kwechando, zvakadai sekuvandudza preheating uye kudzora kupisa kwe interlayer, nezvimwewo. zvakadai sepakati annealing.
6. Tinogonawo kudzora ukuru hweweld, tichishandisa makumbo maduku, ma-multi-channel welding process.
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Nguva yekutumira: Aug-24-2023
