Iyo pfungwa uye kupatsanurwa kwegasi simbi arc welding
Iyo arc welding nzira inoshandisa yakanyungudutswa electrode, yekunze gasi seyepakati arc, uye inodzivirira madonhwe esimbi, dziva rekukweshesa uye nepamusoro-tembiricha simbi munzvimbo yewelding inonzi yakanyungudutswa electrode gasi shielded arc welding.
Zvinoenderana nechikamu chewelding waya, inogona kukamurwa kuita yakasimba core waya welding uye flux cored waya welding. Iyo inert gasi (Ar kana Iye) inodzivirira arc welding nzira uchishandisa yakasimba musimboti waya inonzi Melting Inert Gas Arc Welding (MIG Welding); iyo argon-rich yakasanganiswa gasi yakadzivirirwa arc welding nzira uchishandisa yakasimba waya inonzi Metal Inert Gasi Arc Welding (MIG welding). MAG welding (Metal Active Gasi Arc Welding). CO2 gasi yakadzivirirwa welding uchishandisa waya yakasimba, inonzi CO2 welding. Paunenge uchishandisa flux-cored waya, arc welding inogona kushandisa CO2 kana CO2 + Ar yakasanganiswa gasi sezvo gasi rekudzivirira richinzi flux-cored waya gasi shielded welding. Izvo zvakare zvinokwanisika kuita izvi pasina kuwedzera gasi rekudzivirira. Iyi nzira inonzi self-shielded arc welding.
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)
Musiyano uripo pakati peyakajairwa MIG/MAG welding uye CO2 welding
Hunhu hwe CO2 welding ndeiyi: mutengo wakaderera uye hunyanzvi hwekugadzira. Nekudaro, ine zvakaipira kuwanda kwespatter uye kuumbwa kwakashata, saka mamwe maitirwo ewelding anoshandisa zvakajairwa MIG/MAG welding. Ordinary MIG/MAG welding is arc welding method inodzivirirwa neinert gas kana argon-rich gas, asi CO2 welding ine yakasimba oxidizing properties, iyo inosarudza kusiyana uye maitiro ezviviri. Kuenzaniswa neCO2 welding, iwo mabhenefiti makuru eMIG/MAG welding ndeaya anotevera:
1) Huwandu hwekuputika hunoderedzwa neinopfuura 50%. Iyo welding arc pasi pekuchengetedzwa kweargon kana argon-rich gasi yakagadzikana. Haisi chete iyo arc yakagadzikana panguva yekuchinja kwedonhwe uye jet shanduko, asiwo mune ipfupi-yedunhu shanduko mamiriro epasi-ikozvino MAG welding, iyo arc ine diki repulsion mhedzisiro pamadonhwe, nekudaro kuve nechokwadi cheMIG / Huwandu hwe spatter hunokonzerwa ne MAG welding short circuit shanduko inoderedzwa neanopfuura 50%.
2) The welding seam inoumbwa zvakaenzana uye yakanaka. Sezvo kuendeswa kweMIG/MAG welding madonhwe ari yunifomu, akajeka, uye akagadzikana, weld inoumbwa zvakafanana uye zvakanaka.
3) Inogona weld akawanda anoshanda simbi uye alloys avo. Iyo oxidizing pfuma yearc atmosphere haina kusimba zvakanyanya kana kwete-oxidizing. MIG/MAG welding haingogone chete kupinza kabhoni simbi uye yakakwira alloy simbi, asiwo simbi dzakawanda dzinoshanda uye alloys dzadzo, senge: aruminiyamu nealuminium alloys, simbi isina tsvina uye alloys ayo, Magnesium uye magnesium alloys, nezvimwe.
4) Kunyanya kunatsiridza welding processability, welding mhando uye kugona kugadzira.
Musiyano uripo pakati pepulse MIG/MAG welding uye yakajairwa MIG/MAG welding
Iwo makuru madonhwe ekuchinjisa mafomu eakajairwa MIG/MAG welding ndeyekuchinjisa jet pane yakakwira ikozvino uye pfupi-yedunhu kuendesa kune yakaderera ikozvino. Nokudaro, ikozvino yakaderera ichine zvipingamupinyi zvehuwandu hwespatter uye kuumbwa kusina kunaka, kunyanya mamwe masimbi anoshanda haakwanisi kusungirirwa pasi pepasi rakaderera. Welding akadai aruminiyamu uye alloys, Stainless simbi, etc. Naizvozvo, pulsed MIG/MAG welding akaonekwa. Chimiro chayo chekudonhedza madonhwe ndechekuti pulse yega yega yazvino inotamisa donhwe rimwe. Muchidimbu, iko kutamisa madonhwe. Kuenzaniswa neyakajairwa MIG/MAG welding, maficha ayo makuru ndeaya anotevera:
1) Iyo yakanakisa fomu yekudonhedza kuchinjisa yepulse MIG/MAG welding ndeye kuendesa donhwe rimwe pane pulse. Nenzira iyi, nekugadzirisa pulse frequency, nhamba yemadonhwe anotamirwa pane imwe unit nguva inogona kuchinjwa, inova yekunyunguduka kumhanya kwewaya welding.
2) Nekuda kwekudonhedza kwekudonhedza kwepuru imwe uye donhwe rimwe, dhayamita yedonhwe rinenge rakaenzana nedhayamita yewaya yewelding, saka kupisa kwearc kwedonhwe kwakadzikira, ndiko kuti, tembiricha yedonhwe yakaderera. (kuenzaniswa nejet transfer uye huru droplet transfer). Nokudaro, iyo yakanyunguduka coefficient ye welding wire inowedzera, izvo zvinoreva kuti kunyunguduka kwehutambo hwemagetsi kunovandudzwa.
3) Nekuti tembiricha yekudonhedza yakadzikira, kune hutsi hushoma hwehutsi. Izvi kune rumwe rutivi zvinoderedza kupisa kwekurasikirwa kwezvinhu zvealloy uye kune rumwe rutivi kunovandudza nzvimbo yekuvaka.
Kuenzaniswa neyakajairwa MIG/MAG welding, mabhenefiti ayo makuru ndeaya anotevera:
1) Welding spatter idiki kana kunyange isina spatter.
2) Iyo arc ine yakanaka directivity uye inokodzera welding munzvimbo dzese.
3) Iyo weld yakaumbwa zvakanaka, hupamhi hwekunyunguduka hwakakura, hunhu hwakafanana nemunwe hwekupinza husina simba, uye kureba kwakasara kudiki.
4) Diki yazvino inogona kukwenenzverwa simbi inoshanda (senge aluminium uye alloys ayo, nezvimwewo).
Yakawedzera huwandu hwazvino hweMIG/MAG welding jet transfer. Munguva yekuputika kwepulse, iyo welding ikozvino inogona kuwana yakagadzikana kudonhedza kuchinjisa kubva padyo neakakosha ikozvino yekuendesa jet kune yakakura ikozvino huwandu hwemakumi ema amps.
Kubva pane zviri pamusoro, tinogona kuziva maitiro uye zvakanakira pulse MIG/MAG, asi hapana chinogona kuve chakakwana. Kuenzaniswa neyakajairwa MIG/MAG, zvikanganiso zvayo ndezvizvi:
1) Welding kugadzirwa kwekuita kunogara kunzwika kunge kwakadzikira zvishoma.
2) Hunhu hunodiwa kune welders hwakanyanya kukwirira.
3) Parizvino, mutengo wemidziyo yewelding wakakwira zvakanyanya.
Iyo huru process sarudzo yekusarudzwa kwepulse MIG/MAG welding
Tichifunga nezvemhedzisiro yekuenzanisa iri pamusoro, kunyangwe pulse MIG/MAG welding ine zvakawanda zvakanakira izvo zvisingakwanisi kuwanikwa uye zvichienzaniswa nedzimwe nzira dzewelding, inewo matambudziko emitengo yepamusoro yemidziyo, kushomeka kushoma kwekugadzira, uye kuomerwa kwemawelder kugona. Naizvozvo, kusarudzwa kwepulse MIG/MAG welding kunonyanya kutariswa nezvinodiwa welding process. Zvinoenderana neazvino mudzimba welding process zviyero, iyo inotevera welding inofanirwa kushandisa pulse MIG/MAG welding.
1) Carbon steel. Iyo nguva ine yakakwira zvinodiwa pamhando yeweld uye chitarisiko zvakanyanya muindasitiri yekumanikidza ngarava, senge maboilers, makemikari ekutsinhanisa, yepakati mhepo-inogadzirisa kupisa inotsinhanisa, uye turbine casings muindasitiri yehydropower.
2) Simbi isina tsvina. Shandisa mafungu madiki (pazasi 200A anonzi madiki mafungu pano, akafanana pazasi) uye zviitiko zvine zvakakwirira zvinodiwa pamhando yeweld uye chitarisiko, senge locomotives uye midziyo yekumanikidza muindasitiri yemakemikari.
3) Aluminium uye alloys ayo. Shandisa diki ikozvino (pazasi 200A inonzi diki ikozvino pano, yakafanana pazasi) uye zviitiko zvine yakakwirira zvinodiwa pa weld quality uye chitarisiko, senge yakakwira-speed zvitima, high-voltage switch, kupatsanurwa kwemhepo uye mamwe maindasitiri. Kunyanya zvitima zvinomhanya-mhanya, zvinosanganisira CSR Group Sifang Rolling Stock Co., Ltd., Tangshan Rolling Stock Factory, Changchun Railway Vehicles, nezvimwewo, pamwe nevagadziri vadiki vanovagadzirira kunze. Zvinoenderana nemaindasitiri masosi, panosvika 2015 ese maprovince capitals nemaguta ane huwandu hwevanhu vanopfuura zviuru mazana mashanu muChina achange aine zvitima. Izvi zvinoratidza kudiwa kukuru kwezvitima zvemabullet, pamwe nekudiwa kwekuremerwa kwebasa rewelding uye welding michina.
4) Copper uye alloys ayo. Zvinoenderana nekunzwisisa kwazvino, mhangura uye alloys ayo anonyanya kushandisa pulse MIG/MAG welding (mukati mechikamu cheakanyungudutswa arc arc welding).
Nguva yekutumira: Oct-23-2023
