Amarola okupholisa ama-laminar asetshenziswa ezigayweni zokuthutha kanye nokupholisa i-laminar emicu eqediwe. Phakathi nenqubo yokuthutha yamapheshana agoqwe ashisayo, amarola okupholisa ama-laminar akufanele nje amelane nomthelela womthwalo wezintambo ezishisayo kodwa futhi abe neziqinisekiso zamandla okubopha okuphezulu. Gqoka izakhiwo zama-roller.

Laminar Roller Laser Ukulungisa

1. Izidingo zokulungisa i-laminar flow roller

Imiqulu yokupholisa i-laminar isetshenziselwa ukudlulisa kanye nokupholisa i-laminar kwemicu eqediwe ezigayweni ezigoqayo. Zitholakala phakathi kwemishini yokuqeda nokugoqa. Ngesikhathi senqubo yokuthutha yamapheshana ashisayo, ama-laminar cooling rolls kufanele amelane nomthelela womthwalo wezintambo ezishisayo. Ngesikhathi esifanayo, kufanele ibe namandla okubopha okuphezulu ukuze kuqinisekiswe ukusebenza kokugqoka kwetafula le-roller. Ama-laminar flow roller endabuko akhiqizwa kusetshenziswa ubuchwepheshe be-Ni60 spray welding, kodwa amandla okubopha phakathi kwe-Ni60 spray welding layer kanye ne-substrate iphansi futhi impilo yokusebenza ifushane.

Uma kubhekwa indawo yokusebenza yetafula le-laminar flow roller, i-laser cladding isetshenziswa enqubweni yokwengeza yokwenziwa kabusha kwayo. I-LC-SR-31 powder (ngemuva kwalokhu ebizwa ngokuthi i-31 powder) ikhethwa njengento yokugqoka i-laser. I-metal roller surface material iyinsimbi engu-45# kanti impahla emikhawulweni yomibili yi-Q345D. Ngakho-ke, kusetshenziswa izinto ezilukhuni ezidingekayo ukuze kuhlanganiswe ubuso be-laminar rollers evamile. Ubuchwepheshe bendabuko bokushisela be-arc obungaphansi kwamanzi bunokufakwa okukhulu kokushisa kwe-welding kanye nokuguqulwa okulula kwe-workpiece; isilinganiso esikhulu sesisekelo sokuhlanjululwa kwensimbi nendawo ethinteke ukushisa, izinga lesiqinisekiso sokusebenza esingesihle; I-pre-welding preheating kanye nokwelashwa kokushisa kwe-post-welding kuyadingeka, okwenza inqubo ibe yinkimbinkimbi futhi inzima. Ubuchwepheshe be-Laser cladding bunokufakwa okuncane kokushisa ngesikhathi senqubo yokuhlanganisa, ukuguqulwa kwendawo yokusebenza, izinga elincane lokuhlanjululwa kwensimbi eyisisekelo, nendawo encane ethinteke ukushisa, futhi akukho ukwelashwa okushisa okudingekayo ngemva kokushisela.

2. Lungisa izidingo zobuchwepheshe

• Isampula ye-metallographic itholakala ingenasici (isiteji selabhorethri);
• Ugqinsi lwe-unilateral cladding of the surface roller luyi-1.5-2mm, kanti ugqinsi lwe-unilateral cladding yengxenye ethwele ngu-1.5mm;
• Awekho amaphutha ekutholeni amaphutha e-PT;
• Hlangana nosayizi womdwebo kanye nezidingo zokunemba.
• Ukuqina kongqimba olusebenzayo lwerola yokupholisa i-laminar ngu-55-60HRC.

3. I-laminar flow roller isebenzisa impushana

Izinto zokuvala ezisetshenziswa ku-laminar flow roller yi-LC-SR-31 powder (ngemuva kwalokhu ebizwa ngokuthi i-31 powder), enosayizi wezinhlayiyana we-60-150um kanye nokwakheka kwamakhemikhali njengoba kukhonjisiwe kuThebula 3.1.

4. Okuqukethwe kocwaningo nobunzima bezobuchwepheshe

• Ukusebenza kwenqubo:
  Ngokusekelwe ezicini zempushana yezinto ezimbozekile, ngokulungisa amapharamitha enqubo njengamandla, isivinini sokuskena, inani lokuphakelwa kwempushana, nokugqagqana, isendlalelo sokuvala esingenasici esifana nokuqhekeka, okufakiwe, nezimbotshana kungatholwa ukuze kuhlangatshezwane nezidingo zekhwalithi yomkhiqizo.
• Izakhiwo zemishini:
  Ngokwezidingo zomkhiqizo wobulukhuni 55-60HRC, ukumelana nokugqwala, njll., impushana ikhethelwa ukuvala i-laser ukuze kuhlolwe ubulukhuni, kanti impushana ehlangabezana nezidingo zobulukhuni iyatholakala.
• Ukuhlolwa kosayizi:
  Njengoba ukuphakama kwe-laser cladding kuqhubeka, kuzoba nokuthambekela kokuthi ichibi elincibilikisiwe liye phansi. Kunomehluko wokujiya phakathi kongqimba olulodwa kanye nezingqimba eziningi ze-laser cladding epuleti eliyisicaba. Ngakho-ke, ungqimba ngalunye lwe-cladding kufanele lulinganiswe ngokunembile ngemva kokuqedwa ukuze kuqinisekiswe ukugeleza kwe-laminar. Usayizi owengezwe ngomshini (usayizi ngaphambi kokumbozwa okungenani mkhulu ngo-1mm ohlangothini olulodwa kunangemva kokwengezwa komshini).
• Ubunzima bobuchwepheshe:
  Njengoba ithebula le-laminar flow roller lingenalutho futhi lidinga ubulukhuni obuphezulu bobuso, ukushwabana kosayizi kukhulu uma kuqhathaniswa ngaphambi nangemuva kwe-laser cladding, engabangela kalula imifantu.

5. Imiphumela yokuhlolwa

I-Metallographic:
Ngokusho kwe-GB/T 13298-2015, ukuhlolwa kwe-metallographic kwezingxenye ezilingisiwe kuboniswa kuMfanekiso 5, futhi uketshezi oludlayo luyi-aqua regia. Njengoba kungabonakala kuMfanekiso 3.1, azikho iziphambeko ezinjengokuqhekeka, izimbotshana, noma ukuntuleka kokuhlangana ebusweni bethishu.

Ukuhlola Ukuqina:
Imiphumela yokuhlolwa kokuqina ikhonjisiwe kuThebula 3.2. Ngokwemiphumela yokuhlolwa kobulukhuni, ubulukhuni obujwayelekile be-Rockwell bengqimba yokuvala ngu-57.8HRC, ubulukhuni obujwayelekile be-Vickers bendawo ethinteke ukushisa bungu-173.6 HV, kanti ubulukhuni obujwayelekile be-Vickers bezinto eziyisisekelo ngu-166.5 HV.

6. Isiteji sezezimboni

• Ukugoqa:
  I-turntable evundlile isetshenziselwa ukubopha. Uma kuqhathaniswa ne-turntable, i-turntable clamping evundlile inganciphisa ngempumelelo umthelela we-runout eyindilinga ekuhlanganisweni, futhi ngeke inikeze ukusekela endaweni yokuvala. Ngeke isetshenziswe phakathi nongqimba lwesibili lwe-cladding. Kungase kube khona ukweqa okuphelele komsebenzi ngenxa yokungalingani kwesendlalelo sokuqala.
• Ukusandeni nokuhlanza:
  Sebenzisa i-engeli grinder nebhulashi lensimbi ukuze ugaye futhi uhlanze ukuze ususe ukugqwala namafutha ebusweni bomsebenzi wokusebenza.
• Ukuhlanza:
  Sebenzisa utshwala, ibhulashi lethusi nendwangu yothuli ukuze uhlanze ukususa amabala kawoyela ebusweni bomsebenzi.