A kunkuntar rata waldi tsari nasa ne mai zurfi da kunkuntar tsagi waldi tsari na lokacin farin ciki workpieces. Gabaɗaya, zurfin-da-nisa rabo na tsagi zai iya kai 10-15. Lokacin da aka yi amfani da tsarin walda na baka mai nutsewa, ana samun matsala na cire slag da cire harsashi na kowane walda. Gabaɗaya tsarin waldawar baka mai nutsewa, ana fatan cewa harsashi na iya faɗuwa ta atomatik. Idan harsashi na slag ba zai iya faɗi ta atomatik ba, zai zama da wahala sosai don cire harsashi da hannu don rami mai zurfi da kunkuntar tare da nisa kawai 20-30 mm. Don haka, daga al'adar hanyoyin aiwatar da waldawar baka, mutane sun binciko wata kunkuntar tazarar hanyar tsarin waldawar baka wacce harsashi na iya fadowa ta atomatik - ma'aunin "ma'aunin kifin" kunkuntar rata mai nutsar da tsarin waldawar baka.
Bambanci tsakanin wannan "ma'aunin kifi" weld da "concave" weld (Hoto 2-36) shine cewa harsashi na slag yana da rikice-rikice na sama daban-daban saboda nau'in kusurwoyi daban-daban tsakanin harsashi na slag da bangon gefe na workpiece (Hoto 2). -37). Rashin tashin hankali na "ma'aunin kifi" waldi na iya sa harsashi na slag ya fadi ta atomatik; yayin da surface tashin hankali na "concave" weld sa slag harsashi da tabbaci manne da gefen bango na workpiece. Dangane da dalilan da ke sama, kunkuntar ratar da ke ƙarƙashin tsarin waldawar baka bai kamata ta yi amfani da weld ɗin “concave” ba, amma dole ne a yi amfani da waldar “maaunin kifi”.
Waldawar baka mai nutsewa na iya shiga cikin kayan aikin da kauri na kasa da mm 20 a tafi daya. Saboda babban tafki mai narkakkar, don cimma manufar kafawa a cikin tafiya ɗaya, dole ne a yi amfani da layin da aka tilasta yin amfani da shi don ba da damar narkakkar tafki ya yi sanyi da ƙarfafawa a kan layin, in ba haka ba za a iya ƙone kayan aiki ta cikin sauƙi. Zurfin shigar a lokacin da aka dakatar da walda bai kamata ya wuce 2/3 na kauri ba. Ana iya amfani da hanyoyin tsari masu zuwa don walƙiya mai gefe ɗaya da walƙiya mai gefe biyu (Hoto 2-35):
1) Welding akan kushin jan karfe. 2) Welding akan kushin yumbu na wucin gadi. 3) Welding a kan kushin ruwa. 4) Welding a kan dindindin kushin ko kulle kasa waldi. Don haɗin gwiwa mai ɗaukar nauyi na faranti mai kauri na butt-welded na kauri daban-daban, idan kaurin kaurin faranti biyu ya wuce iyakar da aka kayyade a cikin ma'auni, ana zaɓi girman tsagi gwargwadon kaurin farantin mai kauri, ko farantin mai kauri. ana yin bakin ciki a gefe ɗaya ko biyu zuwa kauri ɗaya da farantin bakin ciki. Wannan na iya guje wa tattarawar damuwa sakamakon canje-canje kwatsam a sashin giciye a haɗin walda na gindi.
1) An nuna bambancin kauri da aka yarda na kauri daban-daban na farantin karfe 2-1.
2) Tsawon bakin ciki. Lokacin da bakin ciki a gefe ɗaya, tsawon shine 1/2 na wancan lokacin da aka yi laushi a gefe ɗaya, kamar yadda aka nuna a cikin Hoto Thinning length L}3 (s2一s}); Lokacin da bakin ciki a bangarorin biyu, bakin ciki shine 2-34.
Lokacin walda mahaɗin gindi na faranti mai kauri daidai, wayar walda yakamata ta kasance a tsakiyar layin walda. Idan wayar walda ba ta kasance a tsakiya ba, tana iya haifar da lahani kamar shigar da ba ta cika da walƙiya ba. Lokacin walda mahaɗin gindin faranti marasa kauri, wayar walda yakamata ta kasance ta karkata zuwa ga farantin mai kauri ta yadda saurin narkewar sa ya zama daidai da na bakin ciki, ta yadda walda ɗin ya kasance daidai. Hoto 2-31 yana nuna diyya na wayar walda don haɗin gwiwa.
Hanya da girman karkatar wayar walda sun bambanta, kuma "ƙarfin busa baka" da tasirin zafi na baka akan narkakken tafkin ma sun bambanta, wanda ke haifar da tasiri daban-daban akan samuwar walda. A aikin walda, za a iya daidaita faɗin walda, narkakken bincike da samar da ƙima na walda ta hanyar canza alkibla da girman son walda. Duk da haka, ya kamata a kauce masa cewa walƙiya waya karkata ne da girma, in ba haka ba zai haifar da matalauta weld samuwar. An nuna tasirin shugabanci da girman karkatar da waya ta walda akan samuwar walda a cikin hoto 2-30.
Kayan aikin walda na Xinfa yana da halaye masu inganci da ƙarancin farashi. Don cikakkun bayanai, da fatan za a ziyarci:Welding & Yanke masana'antun - China Welding & Yankan masana'anta & Suppliers (xinfatools.com)
Ƙara tsayin tsayin wayan walda a ƙarƙashin yanayi na yau da kullun na walda na iya ƙara saurin ajiyar waya da kashi 25% zuwa 50%, amma lokacin da ƙarfin ƙarfin baka ya yi ƙasa, zurfin shigar ciki da faɗin walda zai ragu. Siffar weld ɗin da aka haɗa tare da wayar walda tare da ƙarin tsayin tsayi ya bambanta da na walda wanda aka yi masa walda tare da tsayin tsayi na al'ada. Sabili da haka, lokacin da ake buƙatar zurfin shigar ciki mai girma, ba shi da kyau a ƙara tsawon tsayin waya mai waldawa. Lokacin da tsawo tsawo na waldi waya da aka ƙara don ƙara waldawa gudun azurta waya, da baka ƙarfin lantarki ya kamata a ƙara a lokaci guda don kula da dace tsawon baka.
Ƙarƙashin walda na arc tare da aikin preheating na wayar walda zai iya ƙara saurin narkewar walda da adadin ajiyar waya ba tare da ƙara yawan zafin jiki na kayan tushe ba, don haka cimma manufar inganta aikin walda. Ana nuna tsayin tsayin wariyar walda da preheating na wayar walda a cikin hoto 2-29.
Ƙarƙashin wasu yanayin ƙarfin baka, canje-canje a cikin saurin walda suna canza shigar da zafi na walda, don haka canza zurfin walda da faɗin. Lokacin da saurin walda ya yi sauri, saboda rashin isasshen dumama walda, zurfin walda da faɗin za a ragu sosai, rabon fusion zai ragu, kuma a cikin lokuta masu tsanani, lahani irin su undercut, rashin cika shiga da porosity zai haifar. Sabili da haka, lokacin haɓaka saurin walda, dole ne a ƙara ƙarfin baka don kiyaye zurfin walda da faɗin dindindin. Hoto na 2-28 yana nuna tasirin saurin walda akan samuwar walda.
A lokacin waldawar baka mai nutsewa, ana ƙaddara ƙarfin ƙarfin baka gwargwadon girman ƙarfin halin yanzu, wato, a wani lokaci na walƙiya, tsayin baka ya kamata a ci gaba da kasancewa a koyaushe don tabbatar da cewa baka ya “ƙone” a tsaye kuma an samar da walda cikin hankali. . Duk da haka, ya kamata a bi da waɗannan yanayi daban-daban:
1) Lokacin da saman walda na multi-Layer weld ba shi da kyau sosai ko kuma tushen ratar butt ɗin ya yi girma sosai, ƙarfin ƙarfin baka bai kamata ya zama ƙanƙanta ba. 2) Bai kamata a yi waldi mai zurfi mai zurfi tare da babban ƙarfin baka ba. An nuna nau'ikan walda na sassa na musamman masu dacewa da ƙarfin ƙarfin baka daban-daban a cikin hoto 2-27.
A ƙarƙashin wasu sharuɗɗa, canza yanayin walda zai iya canza saurin narkewar wayar walda da zurfin shigar walda. Duk da haka, wuce gona da iri na walda halin yanzu ba makawa zai haifar da wuce kima weld tsawo da kuma wuce kima waldi zurfin shigar, haifar da tabarbare na weld samuwar. Haka kuma, wannan wuce gona da iri samuwar walda yana daɗa raguwar walda, wanda hakan ke haifar da lahani kamar tsagewar walda, pores, haɗaɗɗun ƙulle-ƙulle, da kuma wuraren da ke fama da zafi da yawa da nakasar walda. Sabili da haka, yayin da ake haɓaka halin yanzu na walda, dole ne a ƙara ƙarfin ƙarfin baka don tabbatar da siffar walda mai dacewa. Ana nuna lahanin walda waɗanda ƙila za su iya haifar da matsanancin walƙiya a halin yanzu a cikin hoto na 2-26.
Lokacin aikawa: Satumba-29-2024
