1. Background Abstract
Zvinodiwa pakugadzira pombi mumahombekombe einjiniya uye petrochemical maindasitiri zvakati wandei, uye huwandu hwebasa hwakati wandei. Iyo yechinyakare TIG welding manual base uye MIG welding yekuzadza nekuvhara inoshandiswa, asi mhando uye kushanda zvakanaka hazvina kunaka. Iri bepa rinotora itsva welding process-yakakwirira-inoshanda inopisa waya TIG welding, kuwana TIG base welding, kuzadza welding uye kuvhara welding, uye inowana MIG welding yakakwirira-inoshanda welding nzira yekutsiva iyo yechinyakare nzira. Kuburikidza nekuedza uku, michina yetsvagiridzo yakaratidza kuti inoshanda uye yakashandiswa zvinobudirira muindasitiri.
Chinangwa chekutsvakurudza
Parizvino, iyo yechinyakare welding process inoshandisa manual TIG welding ye base, manual welding kana MIG welding, submerged arc welding uye dzimwe nzira dzakasiyana-siyana dzekuzadza uye kuvhara kuvandudza kushanda kwewelding. Nekudaro, idzi nzira dzekuzadza uye dzekuvhara hadzisi nyore kuwana otomatiki welding, hadzina kukodzera kune akasiyana pombi madhayamita, zviri nyore kuburitsa urema hwewelding, uye welding quality pass rate inogumira nekushanda kwevashandi.
Kuenzaniswa neyakajairwa TIG welding, waya inopisa TIG welding inowedzera yakaparadzana inopisa waya yemagetsi preheat waya yewelding pahwaro hwechinyakare waya inotonhora, uye inowedzera kunyunguduka kwewaya welding pasina kushandura welding tambo simba. Nenzira iyi, iyo welding arc yakapihwa inongoda kushandisa shoma shoma yesimba kunyungudutsa waya welding, nekudaro ichivandudza welding kugadzira kugona.
High-effective hot wire TIG inodarika ka5 kupfuura yakajairika TIG, inofananidzwa neMIG welding speed, uye deposition rate inowedzerwa kubva pa0.3 ~ 0.5kg/h kusvika 2 ~ 4kg/h. Domestic hot waya TIG tekinoroji iri padanho rakamira uye iri kure nekuwana inoshanda uye yemhando yepamusoro welding. Kushanda kwekunze kupisa waya yeTIG welding process haina kuvandudzwa zvakanyanya uye haigone kusvika pakubudirira kweMIG welding. Naizvozvo, zvinonyanya kukurumidza uye zvakakosha kukudziridza inoshanda inopisa waya TIG welding process.
3.1 Kuedza zvinhu
Mai zvinhu zvepombi yekuyedza iQ235-A simbi, ine ukobvu hwe12mm uye dhayamita rekunze re108mm. Mushonga wekemikari unoratidzwa muTebhura 1. Kusimba kwesimbi yeQ235-A simbi ndeye σb = 482MPa, simba regoho riri σs = 235MPa, uye kureba kuri δ = 26%. Iyo H08Mn2Si welding waya ine dhayamita ye1.2mm inoshandiswa. Mushonga wekemikari unoratidzwa muTebhu 1. Simba rekusimba reH08Mn2Si welding wire is σb≥500 MPa, simba regoho ndiro σs≥420MPa, uye elongation ndeye δ≥22%.
Xinfa welding midziyo ine hunhu hwemhando yepamusoro uye mutengo wakaderera. Kuti uwane ruzivo, ndapota shanya:Welding & Cutting Manufacturers - China Welding & Cutting Factory & Suppliers (xinfatools.com)
3.2 Nzira yekuedza
Muedzo wakashandisa KB370 yakavhurika-mhando pombi clamp mhando yepombi prefabrication yakakwirira-inoshanda inopisa waya TIG welding system sezvakaratidzwa mumufananidzo 1, iyo PHOENIX-521 yakawanda-inoshanda welding sosi yemagetsi, uye inopinza arc-200 inopisa waya sosi yemagetsi. Iyo inopisa waya yeTIG welding process yakashandiswa, uye iyo yakabatana schematic dhizaini inoratidzwa muMufananidzo 2.
Mufananidzo 1 KB370 pombi clamp mhando yepamusoro-inoshanda inopisa waya welding system
Mufananidzo 2 Schematic diagram yejoint
Usati waputirwa, mukati nekunze kwegorofu repiipi yekuyedza chidimbu inovhuvhuta uye inobviswa ngura, ine huwandu hunosvika 25mm. Pamberi pebvunzo welding, iyo pombi test piece inogadziriswa nenzvimbo welding. Three-point spot welding yakakwana. Iyo misalignment inodzorwa mukati me1.5mm uye hapana gap.
3.3 Zviyedzo zvabuda
Mushure mekunge zvienzaniso zvepombi zvakasungwa, zvakatanga kuoneswa X-ray kukanganisa, uye zvese zvakapfuura I level. Zvimwe zviedzo zvakashandisa macroscopic metallographic, microscopic metallographic uye mechaniki zvivakwa bvunzo, sezvakaratidzwa muFigure 3, 4, 5, 6 uye Tafura 3, zvichiteerana. Mifananidzo 3 uye 4 inoratidza zvakajeka matatu-layer weld morphology, shanduko yehurongwa hwehurongwa, diki diki rinopisa-rinopisa nzvimbo ye weld, uye hapana pores kana kuputika. Tafura 3 inoratidza kuti mawelds ese akaputsika munzvimbo yevabereki, uye iyo yakanaka bend uye kumashure bend zvakasangana nezvinodiwa zveGB/T14452-93 standard. Sezvinoonekwa kubva muTebhu 4, mhedziso dzinotevera dzinotorwa:
Mufananidzo 3 Microstructure ye base simbi, kupisa kwakakanganiswa nzvimbo uye weld cross chikamu
Mufananidzo 4 Macroscopic metallographic chimiro che weld cross chikamu
Mufananidzo 5 Tensile bvunzo
(a) Positive bend
(b)Kumashure
High-effective hot wire TIG inogona kuwana TIG welding quality uye MAG welding speed, asi MAG welding ine zvayakaipira senge spatter yakakura, yakasimba arc, hombe porosity, hombe mutsara simba, uye hombe yekukuya. Kunyangwe kushanda kwayo kwekuisa kwakakwira, zviri pachena kuti haina kugadzikana uye yakavimbika seTIG welding pasi pemhando yepamusoro zvinodiwa. Kunyatsoshanda kwepamusoro-soro inopisa waya yeTIG welding yakaenzana kana kuti yakakura zvishoma pane MAG welding;
Yakakwirira-inopisa inopisa waya TIG welding uye yechinyakare inotonhora waya TIG welding ine hunyanzvi hwekuvandudza kashanu kusvika kagumi.
4. Mhedziso yekuedza
4.1 Kupisa waya TIG welding inogona kuwana weld ine chirema-isina pepamusoro uye yakanaka kuumbwa;
4.2 Iyo tambo yekudyisa kumhanya yekupisa waya TIG welding inosvika 5m / min, kusvika 6.5m / min, uye chiyero chekunyunguduka chinogona kusvika 3.5kg / h, iyo inovandudza zvakanyanya kushanda kwekugadzira;
4.3 Kutyoka kwekuputsika kwewaya inopisa TIG welds inoitika mumubereki zvinhu, izvo zvinovandudza kushanda kwekubatana;
4.4 High-effective hot wire TIG welding inonyatso zadzisa kunaka kwe welding yeTIG welding uye nekumhanyisa kumhanya kweMIG welding.
5. Musika makura zvikumbiro uye tarisiro
Mushure meanoda kusvika makore maviri ekusimudzirwa kwemusika uye kushandiswa, isu tiri kushandiswa zvakanyanya mumarine engineering, gasi, zviridzwa, petrochemicals, uye midziyo.
Iyo yakakwirira-inoshanda inopisa waya yeTIG welding process haina kungokodzera kabhoni simbi, asiwo kune alloy simbi, Stainless simbi, duplex simbi, nickel-based alloys nezvimwe zvinhu (miedzo pazvinhu zvakasiyana zvakaratidza kuti, kunyanya mu duplex simbi. welding process mumarine engineering nemamwe maindasitiri, yakakwirira-inoshanda inopisa waya TIG welding ine mabhenefiti asingaenzaniswi). Yakapwanya monopoly yekunze inopisa waya yeTIG welding muChina, uye kushanda kwayo kwakapetwa ka1.5 kusvika ku2 kupfuura iyo yewaya dzinopisa dzekunze zvichienzaniswa nemhando dzekunze.
Iyi tekinoroji inozadza gap mupombi prefabrication welding, innovative process tekinoroji chigadzirwa chakakodzera mamiriro epasirese eChina, uye iri kukanganisa innovation mupombi prefabrication indasitiri. Inogona kutsiva zvachose iyo iripo yechinyakare maitiro eTIG primer + MAG kuzadza uye kuvhara kaviri composite maitiro, kudzivirira vashandisi kubva kudzokorodza kutenga michina, uye ndeyechokwadi-inoshanda uye yakawanda-chinangwa pombi prefabrication welding system. Iyo welding system ine tekinoroji iyi seyo musimboti process iri kushandiswawo kune yakangwara pombi prefabrication system, uye tarisiro yemusika yakakura.
Nguva yekutumira: Aug-27-2024
