Pores mu weld seam inyaya yakajairika yemhando panguvarobhoti welding. Kuvapo kwepores kunogona kutungamirira kuderera kwesimba re welds, uye kunyange kukonzera kuputika uye kuputsika. Zvikonzero zvikuru zvekuumbwa kwe pores mumarobhoti welds zvinosanganisira zvinotevera:
1. Kusadzivirirwa kwegasi:
Munguva yekugadzira, kugoverwa kwemagasi ekudzivirira (akadai seargon, carbon dioxide, nezvimwewo) hakuna kukwana kana kusaenzana, iyo inokundikana kunyatsoparadzanisa okisijeni, nitrogen, nezvimwewo mumhepo, zvichiita kuti gasi risanganiswe mumvura yakanyunguduka uye kuumbwa kwe pores.
2. Kusabatwa zvakanaka kwepamusoro pezvinhu zvewelding uye base zvinhu:
Pane kusvibiswa senge mafuta mavara, ngura, hunyoro, uye oxide zviyero pamusoro peiyo welding zvinhu kana base simbi. Tsvina iyi inoora patembiricha yewelding yakakwira kuti ibudise gasi, rinopinda mudziva rakanyungudutswa roita pores.
3. Zvisina kufanira welding process parameters:
Kana iyo yazvino, voltage, uye welding kumhanya zvakanyanyisa kana kuderera, zvichikonzera kusakwana kubvongodza kwedziva rekunyunguduka uye kusakwanisa kwegasi kubuda zvakanaka; Kana kana kona yekuputira yegasi rekudzivirira isina kunaka, inogona kukanganisa gasi kudzivirira maitiro.
4. Kusanzwisisika weld dhizaini:
Kana mukaha pakati we weld seams wakakurisa, fluidity yesimbi yakanyungudutswa yedhava yakashata, uye gasi rakaoma kuburitsa; Kana kuti chimiro che weld seam yakaoma, uye gasi haisi nyore kutiza pakadzika kwe weld seam.
5. Humidity yakakwirira munzvimbo yewelding:
Hunyoro hwemumhepo hunoora kuita gasi rehydrogen patembiricha yekupisa, iyo ine kunyungudika kwakanyanya mudziva rakanyungudutswa uye haigone kubuda nenguva panguva yekutonhora, ichigadzira pores.
Matanho ekugadzirisa dambudziko reporosity mumarobhoti welds ndeaya anotevera:
1. Gadzirisa kudzivirira gasi:
Iva nechokwadi chokuti kuchena kwegasi rinodzivirira kunosangana nechiyero, kuyerera kwehuwandu huri pakati nepakati, uye chinhambwe pakati penozzle ne weld seam chakakodzera, ichigadzira yakanaka yekudzivirira keteni remhepo.
●Shandisa yakafanira gasi kuumbwa uye kusanganisa reshiyo, sekushandisa yakaderera kana ultra-low hydrogen welding rods newaya, kuderedza kwakabva gasi rehydrogen.
2. Kunyatsorapwa kwepamusoro:
Nyatsochenesa pamusoro pewelding zvinhuuye base simbi isati yatungirwa, bvisa tsvina yakaita semafuta, ngura, uye mwando, uye ita preheating treatment kana zvichidiwa.
Kune nharaunda umo hunyoro hunogona kuitika panguva yewelding process, tora matanho ekuomesa, sekushandisa weld seam dryer kana preheating workpiece.
3. Rongedza welding process parameters:
Sarudza iyo yakakodzera ikozvino, voltage, uye welding yekumhanyisa yakavakirwa pane welding material, base material, uye welding chinzvimbo kuti ive nechokwadi chepakati chinosimudzira uye gasi kupukunyuka kwedziva rakanyungudutswa.
Rongedza kona yekufuridza yegasi rinodzivirira kuti uve nechokwadi chekuti gasi rinovhara zvakaenzana musono we weld.
4. Kuvandudza weld design:
Dzora iyo weld seam gap mukati mechikamu chinonzwisisika kuti usave wakakurisa kana kudiki.
Kune akaomesesa welds, nzira dzakaita segmented welding, preset filler simbi, kana kushandura welding kutevedzana inogona kushandiswa kuvandudza gasi kubuda mamiriro.
5. Kudzora welding nharaunda:
Edza kuisa weld munzvimbo yakaoma uye inofefetera zvakanaka kudzivirira hunyoro hwakawandisa.
Kune nharaunda umo hunyoro husingagone kudzorwa, matanho akadai sekushandisa hygroscopics uye welding seam kudziyisa anogona kutariswa kudzikisa kukanganisa kwehunyoro.
6. Kuongorora uye kutonga kwemhando:
Gara uchitarisa mashandiro emidziyo yewelding, senge gasi kuyerera mamita, welding pfuti nozzles, nezvimwewo, kuve nechokwadi chekushanda kwavo kwakanaka.
Nguva chaiyo yekutarisisa yewelding process, senge kushandisa welding process yekutarisa system, kuona nekukurumidza uye kugadzirisa ma parameter asina kujairika.
Ita bvunzo dzisiri dzekuparadza (senge ultrasonic bvunzo, radiographic kuyedza, nezvimwewo) mushure mewelding kuti uone nekukurumidza uye ubate welds ine porosity. Kushandiswa kwakazara kwematanho ari pamusoro anogona kudzikisa zvinobudirira kugadzirwa kwepores mumarobhoti welds uye kunatsiridza welding mhando.
Izvo zvinokonzeresa porosity mumarobhoti welds zvinosanganisira kusvibiswa kwepasi kweiyo welding zvinhu, kusakwana kwekudzivirira gasi, kutonga kwakashata kwewelding ikozvino uye voltage, uye yakawandisa welding kumhanya. Kuti tigadzirise dambudziko iri, isu tinofanirwa kutora matanho anoenderana, anosanganisira kushandisa zvakachena welding zvinhu, kusarudza magasi ekudzivirira zvine musoro uye kudzora kuyerera kwekuyerera, kuseta welding paramita zvine musoro, uye kudzora kumhanya kwewelding zvinoenderana nemamiriro ezvinhu. Chete nekutarisana neakawanda panguva imwechete tinogona kudzivirira nekugadzirisa dambudziko reporosity mumarobhoti welds, uye nekuvandudza welding mhando.
Nguva yekutumira: Kubvumbi-07-2024
