High-carbon steel inoreva carbon steel ine w (C) yakakwirira kudarika 0.6%, iyo ine tsika yakakura yekuoma kupfuura yepakati-kabhoni simbi, uye inoumba high-carbon martensite, iyo inonyanya kunzwisiswa pakugadzirwa kwechando chinoputika.Panguva imwecheteyo, iyo martensite yakaumbwa munzvimbo inopisa-yakakanganiswa yewelding yakaoma uye ine brittle, iyo inotungamirira kuderera kukuru kwepurasitiki uye kuoma kwekubatana.Naizvozvo, iyo weldability yeyakakwira-kabhoni simbi yakashata, uye yakakosha welding process inofanirwa kugamuchirwa kuti ive nechokwadi chekuita kwejoinhi..Naizvozvo, kazhinji haiwanzo shandiswa muzvimiro zve welded.Yakakwira kabhoni simbi inonyanya kushandiswa kune zvikamu zvemuchina zvinoda kuomarara kwakanyanya uye kupfeka kuramba, senge shafts, magiya mahombe uye couplings.Kuti uchengetedze simbi uye kurerutsa tekinoroji yekugadzira, aya emuchina zvikamu anowanzo kusanganiswa nezvimiro zvakashongedzwa.Welding yemhando yepamusoro kabhoni simbi inosanganawo mukuvaka muchina unorema.Paunenge uchigadzira iyo welding process yeyakakwira kabhoni simbi weldment, marudzi ese ehurema hunogona kuitika hunofanirwa kuongororwa zvakadzama, uye matanho anoenderana ekugadzira welding anofanirwa kutorwa.
1. Weldability yepamusoro kabhoni simbi
1.1 Welding nzira
Yakakwira kabhoni simbi inonyanya kushandiswa muzvimiro zvine kuomarara kwakanyanya uye yakakwirira kupfeka kuramba, saka nzira huru dzewelding ndeye electrode arc welding, brazing uye yakanyura arc welding.
1.2 Welding zvinhu
Welding ye high carbon steel kazhinji haidi simba rakafanana pakati pejoinhi uye base simbi.Low-hydrogen maelectrode ane simba desulfurization kugona, yakaderera diffusible haidrojeni zvemukati mesimbi yakaiswa, uye kusimba kwakanaka kunowanzo kusarudzirwa electrode arc welding.Apo simba resimbi ye weld uye nheyo yesimbi inodiwa, yakaderera-hydrogen electrode yezinga rinoenderana rinofanira kusarudzwa;apo kusimba kwesimbi ye weld uye nheyo yesimbi isingadikanwi, yakaderera-hydrogen electrode ine simba rakaderera pane iyo yesimbi yepasi inofanira kusarudzwa.Electrode ine simba rakakwirira kudarika simbi yepasi haigoni kusarudzwa.Kana iyo nheyo yesimbi isingabvumirwi kuve yakatsva panguva yekuputika, kuitira kudzivirira kuputika kunotonhora munzvimbo inopisa-inopisa, austenitic stainless steel electrodes inogona kushandiswa kuwana chimiro che austenite nepurasitiki yakanaka uye yakasimba kuputika kwekudzivirira.
1.3 Kugadzirira kweGroove
Kuti udzikise chikamu chekabhoni musimbi yeweld, chiyero chekusanganisa chinofanira kudzikiswa, saka magirofu ane U-shape kana V-anowanzo shandiswa panguva yekukweshesa, uye kutarisirwa kunofanira kutorwa kuchenesa goro uye mavara emafuta uye. ngura mukati me20mm kumativi ose emugero.
1.4 Preheating
Kana welding nemaelectrodes esimbi emuumbirwo, inofanira kupiswa isati yaiswa, uye tembiricha yekupisa inofanira kudzorwa pa250°C kusvika 350°C.
1.5 Interlayer kugadzirisa
Kune akawanda-layer multi-pass welding, yekutanga pass inoshandisa madiki-diameter electrodes uye yakaderera-ikozvino welding.Kazhinji, workpiece inoiswa mu semi-vertical welding kana welding tsvimbo inoshandiswa kuzununguka nechemberi, kuitira kuti iyo yose inopisa-yakakanganiswa nzvimbo yesimbi yepasi inopisa munguva pfupi kuti iwane preheating uye kupisa kwekuchengetedza migumisiro.
1.6 Post-weld kupisa kurapwa
Pakarepo mushure mekuputika, workpiece inoiswa muchoto chekupisa, uye kuchengetedza kupisa kunoitwa pa 650 ° C nokuda kwekunetseka kwekunetseka annealing.
2. Welding kukanganisa kwepamusoro kabhoni simbi uye matanho ekudzivirira
Nekuda kweiyo yakanyanya kuomarara maitiro epamusoro kabhoni simbi, kupisa kutsemuka uye kutonhora kutsemuka kunowanzo kuitika panguva yewelding.
2.1 Matanho ekudzivirira ekuputika kwemafuta
1) Dzora kemikari yeweld, nyatso kudzora zvirimo zvesarufa uye phosphorus, uye zvakakodzera kuwedzera manganese zvirimo kuvandudza weld chimiro uye kuderedza kusarura.
2) Dzora chimiro chemuchinjikwa-chikamu che weld, uye hupamhi-kusvika-kudzika reshiyo inofanira kuva yakakura zvishoma kudzivirira kupatsanurwa pakati pe weld.
3) Kune ma weldments ane high rigidity, zvakakodzera welding parameters, zvakakodzera welding kutevedzana uye nhungamiro inofanira kusarudzwa.
4) Kana zvichidikanwa, tora preheating uye inononoka kutonhora matanho kudzivirira kuitika kwekupisa kwekuputika.
5) Wedzera alkalinity ye electrode kana flux kuderedza kusvibiswa kwemukati mu weld uye kuvandudza dhigirii rekuparadzanisa.
2.2 Matanho ekudzivirira kutsemuka kwechando.
1) Kupisa kusati kwave nemoto uye kunonoka kutonhora mushure mekuputika hakugoni kuderedza kuoma uye brittleness yenzvimbo yakakanganiswa nekupisa, asiwo kukurumidza kupararira kwekunze kwehydrogen mu weld.
2) Sarudza matanho akakodzera welding.
3) Gamuchira kuungana kwakakodzera uye kutevedzana kwewelding kuti uderedze kuzvidzora kushushikana kwemajoini akaiswa uye kuvandudza mamiriro ekushushikana kweweldments.
3 .Mhedziso
Nekuda kweiyo yakakwira kabhoni yemukati, kuomarara kwepamusoro uye kushomeka kwesimbi yakakwira kabhoni, zviri nyore kugadzira yakakwira kabhoni martensitic chimiro panguva yewelding, uye zviri nyore kugadzira welding makatsemuka.Naizvozvo, kana welding yakakwira kabhoni simbi, iyo welding process inofanirwa kusarudzwa zvine musoro.Uye tora matanho anoenderana nenguva kudzikisa kuitika kwekutsemuka kwewelding uye kuvandudza mashandiro emajoini akaiswa.
Nguva yekutumira: Jul-18-2023