01. Inkcazo emfutshane
I-Spot welding yindlela yokumelana ne-welding apho i-weldment idityaniswe kwi-lap joint kwaye icinezelwe phakathi kwee-electrode ezimbini, kwaye isiseko sesinyithi sinyibilika ngokuxhathisa ubushushu ukwenza i-solder joint.
I-Spot welding isetyenziswa kakhulu kule miba ilandelayo:
1. Ilap joint ye sheet sheets stamping parts, ezifana ne-automobile cab, carriage, fish scale screen of harvester, njl.
2. Icwecwe elincinci kunye nesakhiwo sentsimbi yecandelo kunye nesakhiwo sesikhumba, njengeendonga zecala kunye neesilingi zeenqwelwana, iipaneli ze-trailer carriage panels, ukudibanisa iifuneli zokuvuna, njl.
3. Izikrini, iifreyimu zendawo kunye nemivalo enqamlezayo, njl.
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03. Inkqubo yokusebenza
Umphezulu we-workpiece kufuneka ucocwe ngaphambi kokuba udibanise. Indlela yokucoca esetyenziswa ngokuqhelekileyo kukucoca ukucoca, oko kukuthi, ukuthabatha kwi-asidi ye-sulfuric evuthayo kunye ne-concentration ye-10%, kwaye emva koko uhlambe emanzini ashushu. Inkqubo ethile yokuwelda imi ngolu hlobo lulandelayo:
(1) Thumela i-workpiece joint phakathi kwe-electrode ephezulu nangaphantsi yomatshini we-welding kwaye uyibambe;
(2) ukufakelwa kombane, ukwenzela ukuba iindawo zokudibanisa zezinto ezimbini zokusebenza zifudunyezwe kwaye zincibilike ngokuyinxenye ukwenza i-nugget;
(3) Gcina uxinzelelo emva kokuba umbane ucinyiwe, ukwenzela ukuba i-nugget ipholile kwaye iqiniswe phantsi koxinzelelo ukwenza i-solder joint;
(4) Susa uxinzelelo kwaye ukhuphe i-workpiece.
04. Imiba enempembelelo
Izinto eziphambili ezichaphazela umgangatho we-welding yi-welding yangoku kunye nexesha lokunika amandla, uxinzelelo lwe-electrode kunye ne-shunt, njl.
1. I-Welding yangoku kunye nexesha lamandla
Ngokobungakanani bexesha le-welding kunye nobude bexesha lokunika amandla, i-spot welding inokwahlulwa ibe ziindidi ezimbini: ukucaciswa okuqinileyo kunye nokucaciswa okuthambileyo. Inkcazo edlula umsinga omkhulu ngexesha elifutshane libizwa ngokuba yinkcazo enzima. Ineenzuzo zemveliso ephezulu, ubomi obude be-electrode, kunye ne-deformation encinci ye-weldment. Ifanelekile kwi-welding metals kunye ne-thermal conductivity engcono. Inkcazo edlula i-current encinci ixesha elide ibizwa ngokuba yi-soft specifikationer, enemveliso ephantsi kwaye ifanelekile kwiintsimbi ze-welding ezivame ukuba lukhuni.
2. Uxinzelelo lwe-electrode
Ngexesha le-welding yendawo, uxinzelelo olwenziwa yi-electrode kwi-weldment ibizwa ngokuba yi-electrode pressure. Uxinzelelo lwe-electrode kufuneka lukhethwe ngokufanelekileyo. Xa uxinzelelo luphezulu, lunokuphelisa i-shrinkage kunye ne-shrinkage cavity enokuthi yenzeke xa i-nugget iqina, kodwa ukuxhathisa uxhulumaniso kunye nokuxinana kwangoku kuyancipha, okubangelwa ukufudumeza okwaneleyo kwe-weldment kunye nokunciphisa ububanzi be-nugget. Amandla okudibanisa i-solder ayancipha. Ubungakanani boxinzelelo lwe-electrode bunokukhethwa ngokwezi zinto zilandelayo:
(1) Izinto ze-weldment. Ukuphakama kwamandla aphezulu obushushu bezinto eziphathekayo. Uxinzelelo olukhulu lwe-electrode olufunekayo. Ngoko ke, xa welding intsimbi stainless kunye nobushushu-resistant, uxinzelelo electrode kufuneka ibe phezulu kunolo low carbon steel.
(2) Iiparamitha ze-Welding. Okukhona kunzima ukucaciswa kwe-weld, ngakumbi uxinzelelo lwe-electrode.
3. shunt
Ngexesha le-welding yendawo, i-current flowing evela ngaphandle kwe-welding main circuit ibizwa ngokuba yi-shunt. I-shunt inciphisa i-current ejikelezayo kwindawo ye-welding, okubangela ukufudumeza okunganeleyo, okubangelwa ukuhla okuphawulekayo kwamandla e-solder joint kunye nokuchaphazela umgangatho we-welding. Imiba echaphazela iqondo loluleko ikakhulu ibandakanya le miba ilandelayo:
(1) Ubukhulu bentsimbi yentsimbi kunye nesithuba seendawo ezidityanisiweyo. Njengoko umgama phakathi kwamalungu e-solder ukhula, ukuxhathisa kwe-shunt kuyanda kwaye iqondo le-shunt liyancipha. Xa i-dot pitch yesiqhelo ye-30-50mm yamkelwe, i-shunt yangoku i-akhawunti ye-25% -40% yangoku iyonke, kwaye njengoko ubukhulu be-weldment buyancipha, i-degree of shunt nayo iyancipha.
(2) Ubume bomphezulu we-weldment. Xa kukho i-oxides okanye ukungcola ebusweni be-weldment, ukuchasana koqhagamshelwano phakathi kwee-weldments ezimbini kwanda, kwaye i-current ngokusebenzisa indawo ye-welding iyancipha, oko kukuthi, i-degree of shunt iyanda. I-workpiece ingakhethwa, ifakwe isanti okanye ipolishwe.
05. Imiqathango yoKhuseleko
(1) Ukutshintsha kweenyawo kumatshini wokuwelda kufuneka kube nesikhuselo esiqinileyo sokukhusela ukuthintela ukusebenza ngengozi.
(2) Indawo yokusebenza iya kuxhotyiswa nge-baffle ukukhusela ukutshiza kweentlantsi ezisebenzayo.
(3) Abashicileli bafanele banxibe iindondo ezisicaba zokuzikhusela xa bewelda.
(4) Indawo apho umatshini wokuwelda ubekwe khona kufuneka igcinwe yomile, kwaye umhlaba kufuneka ugutyungelwe ngamabhodi achasene ne-skid.
5 Xa iqondo lobushushu lisezantsi, amanzi aqokelelweyo kumzila wamanzi kufuneka asuswe ukuze kuthintelwe umkhenkce.
Ixesha lokuposa: Aug-09-2023
