Welding inonyanya kushandiswa kukwirisa welding yevhavha chisimbiso pamusoro, kugadzirisa welding yekukandira kuremara uye welding inodiwa nechimiro chechigadzirwa. Kusarudzwa kwezvinhu zvewelding zvinoenderana nemaitiro ayo maitiro. Zvinhu zvinoshandiswa mu electrode arc welding, plasma arc welding, submerged arc welding uye carbon dioxide gasi shielded welding zvakasiyana. Iyo inonyanya kushandiswa uye inowanzoshandiswa nzira yekushongedza zvinhu zvakasiyana-siyana zvinoshandiswa mu electrode arc welding.
01 Zvinodiwa zvevharuvhu welders
Ivhavha chinhu chinomanikidza pombi. Iyo hunyanzvi nhanho uye welding maitiro eiyo welder anokanganisa zvakananga chimiro chechigadzirwa uye kuchengetedzwa kwekugadzirwa, saka zvinokurumidza kunyanyoda iyo welder. Welding inzira yakakosha mubhizinesi rekugadzira mavharuvhu, uye panofanirwa kunge paine nzira dzakakosha dzeiyo yakakosha maitiro, kusanganisira manejimendi uye kutonga kwevashandi, zvishandiso, maitiro uye zvinhu. Iyo welder ichapasa ruzivo rwekutanga uye chaiyo yekudzora bvunzo yekwakaringana bvunzo yeboiler uye yekumanikidza mudziyo welders, bata chitupa (chitupa), uye anogona kuita welding mashandiro mukati menguva yechokwadi.
02 Kuchengeta zvinodiwa zvemagetsi evharuvhu
1) Teerera kune ambient humidity kudzivirira iyo welding tsvimbo kubva pakunyorova. Hunyoro hunyoro mumhepo hunodiwa kuve husingasviki 60% uye imwe chinhambwe kubva pasi kana kumadziro.
2) Kusiyanisa muenzaniso we welding tsvimbo uye tsanangudzo haifaniri kuvhiringidzika.
3) Panguva yekufambisa uye kurongedza, chenjerera kuti usakuvadza iyo yekupfeka, kunyanya Stainless simbi electrode, pamusoro pepamusoro electrode uye cast iron electrode.
03 Welding kugadziriswa kwemavharuvhu castings
1) Welding kugadziriswa kunobvumirwa kune mavharuvhu castings nejecha kubatanidzwa, kuputika, gomba remhepo, gomba rejecha, kusununguka uye zvimwe zvikanganiso, asi tsvina yemafuta, ngura, unyoro uye kukanganisa kunofanira kubviswa kusati kwagadziriswa. Mushure mokubvisa zvikanganiso, chengetedza simbi inopenya nejecha. Chimiro chayo chinofanira kunge chakatsetseka, paine kumwe kutenuka uye pasina mipendero yakapinza. Kana zvichidikanwa, kutonga kusingaparadzi kuchaitwa nehupfu kana kupinza kwemvura, uye kugadzirisa welding inogona kuitwa chete kana pasina kukanganisa.
2) Kugadzirisa welding hakubvumirwi kana paine kutsemuka kwakakomba kunopinda, kuvharika kunotonhora, pores yemuzinga, nzvimbo dzakakura dzeporosity pakudzvanywa kunotakura simbi castings, uye hapana hurema hunofanira kubviswa kana zvikamu zvisingakwanisi kugadziriswa nekukwenenzverwa mushure mekugadzirisa. welding.
3) Huwandu hwekudzokororwa welding kugadziriswa mushure mekudonha bvunzo yekumanikidza inotakura simbi yekukanda goko haipfuure kaviri.
4) Iyo yekukandira inofanirwa kukwenenzverwa uye yakatsetseka mushure mekugadzirisa welding, uye hapana chiri pachena chekugadzirisa welding trace ichasiiwa.
5) Izvo zvinodiwa zveNDT zvekukandira mushure mekugadzirisa welding zvichaitwa zvinoenderana nezvinodiwa.
04 Kushushikana kwekurerutsa kurapwa kwevharuvhu mushure mekuputika
1) Kune ma weld akakosha, senge weld yebhachi rekuvhara rinopisa, weld yechigaro chevharuvhu chakamisikidzwa pairi valve body, iyo yakatarisana yekuisa chisimbiso inoda post welding kurapwa, uye kugadzirisa welding yekumanikidza inokanda castings inodarika iyo yakatarwa, iyo welding. kushushikana kunobviswa mushure mekugadzira. Kana zvisingakwanisi kupinda muchoto, nzira yekubvisa kushungurudzika kwenzvimbo inogonawo kugamuchirwa. Maitiro ekubvisa welding kushushikana anogona kureva kune welding tsvimbo bhuku.
2) The welding stress ichabviswa mushure mekunama kana kudzika kwekugadzirisa welding kuchipfuura 20% yemadziro emadziro kana 25mm kana nharaunda yakakura kupfuura 65C ㎡ uye iyo goko rekuyedza kuvuza.
05 Valve welding maitiro ekufanirwa
Sarudzo chaiyo yewelding tsvimbo ingori yakakosha link mune yakakosha process ye welding. Ingori kusarudzwa kwakaringana kwetsvimbo yewelding. Pasina vimbiso yezvinyorwa zvakapfuura, hazvibviri kuwana yakanaka welding quality.
Sezvo mhando yewelding ye electrode arc welding yakasiyana neiyo yakakosha paramita inotsanangurwa nemhando ye electrode pachayo, dhayamita ye electrode, base simbi, ukobvu hwesimbi yepasi, weld chinzvimbo, preheating tembiricha uye yakagamuchirwa ikozvino, teerera kune shanduko yeizvi. zvakakosha parameters.
Muzvigadzirwa zvevharuvhu, iyo welding process qualification inosanganisira pamusoro pekuisa chisimbiso pamusoro, inlay welding yechigaro chevharuvhu uye muviri wevharuvhu uye kugadzirisa welding yezvikamu zvekumanikidza.
Kune dzakanangana maitiro ekufanirwa nzira, ndapota tarisa kune ASME chikamu IX welding uye brazing qualification standard uye yeChina muchina indasitiri chiyero JB / T 6963 fusion welding process qualification yezvikamu zvesimbi.
Nguva yekutumira: Sep-24-2021
