Intshayelelo: I-Welding Spatter{0}}Ixabiso Elifihliweyo kuMveliso
Kumacandelo{0}omgangatho ophezulu wemizi-mveliso afana nokwenziwa kweemoto, ukuveliswa kwebhetri entsha yamandla, kunye nokwenziwa kwentsimbi echanekileyo,I-Resistance Spot Weldingyinkqubo yokhetho ngenxa yokusebenza kwayo okuphezulu kunye nobushushu obuncinci{0}}kwindawo echatshazelweyo. Nangona kunjalo, i-welding spatter isengumceli mngeni obalulekileyo, odla ngokubizwa ngokuba "ngumbulali ofihlakeleyo" wokuphumelela kwemveliso. I-Spatter ayiphazamisi kuphela umgangatho obonakalayo we-weld kodwa, ngokugqithiseleyo, isongela uzinzo lwamandla e-weld joint kunye nokunciphisa kakhulu ubomi be-electrode. Idatha yoshishino ibonisa ukuba i-spatter inokunciphisa ubomi be-electrode ngama-30% ukuya kuma-50%. Ngaphaya koko, kukhokelela ekonyukeni kwexesha lokulondolozwa kwezixhobo, iindleko eziphezulu zokucoca, kunye neengozi ezinokubakho zokhuseleko.
Ukusombulula umba we-spot weld spatter kubalulekile ekuphuculeni umgangatho wemveliso, ukunciphisa iindleko zokusebenza, kunye nokuphumeza imveliso ezenzekelayo kakhulu. Esi sikhokelo siya kugocagoca kwiingcambu ezisisiseko ze-spatter kwaye sinikezele ngesicwangciso, iseti yesisombululo esisebenzayo, ukudibanisa iiparitha zoshishino olugunyazisiweyo kunye namava asebenzayo.
-Uhlalutyo olunzulu: IFiziksi yeSpatter{1}}I-Energy Overdrive vs. Ukuchasana noQhagamshelwano
Ngokusisiseko, i-spot weld spatter yenzeka xa isinyithi esinyibilikisiweyo sikhutshiwe phambi kokuba siqine kwaye sigcinwe ngamandla e-electrode. Le ejection ibangelwa luxinzelelo olukhulu lwangaphakathi oluveliswe kumandla okukhawulezayo okukhawulezayo kunye nokumelana nokunxibelelana okungaqhelekanga ngexesha lenkqubo ye-welding.
Igalelo lobushushu ngexesha le-welding lilandela uMthetho kaJoule: Igalelo lobushushu=I²Rt, apho ndingumbane welding, R luxhathiso lulonke, kwaye t lixesha le weld. I-Spatter sisiphumo esithe ngqo solu lungelelwaniso lwamandla luphazamisekile:
- Ukugqithiswa kwamandla:Xa i-welding yangoku iphakama ngokukhawuleza okanye idlula kakhulu ixabiso elibalulekileyo elifunekayo kwizinto eziphathekayo, ukuveliswa kobushushu okukhawulezayo kubangela ukuba isinyithi esingaphakathi kwe-weld nugget sivuthe okanye sandise ngamandla. Oku kwanda ngokukhawuleza koxinzelelo lwangaphakathi kunqoba i-plastic ring contraindication esetyenziswa yi-electrodes, okukhokelela ekugxothweni kwesinyithi esinyibilikisiweyo. Amanani emizi-mveliso abonisa ukuba ukugqithela kwi-welding current ecetyiswayo nge-15%–20% kunokunyusa amathuba okutshiza ngama-3 ukuya kwa-5.
- Ukunganyangeki ngokungaqhelekanga:Ungcoliseko olunje ngeoyile, umhlwa, iioksidi, okanye ii-burrs kumphezulu womsebenzi zenza ukuxhathisa okungazinzanga. Xa yangoku iqukuqela kula -indawo ezixhathisayo, ibangela ukufudunyezwa kwendawo, okukhokelela kumphumo "omncinci{2}}oqhumayo okhupha isinyithi esinyibilikisiweyo phambi kokuba i-weld nugget idale.
Isicwangciso esingundoqo: Ukufanisa iNzululwazi yeeParamitha ze-Welding
Ulawulo oluchanekileyo kwiiparamitha ze-welding yeyona ndlela ichanekileyo nesebenzayo yokuthintela isitshizi. Ukwenziwa kweParameters kufuneka kubambelele "kuMgaqo wokuTshisana," apho ixesha langoku, ixesha, kunye namandla zilungelelaniswe ngokuthe ngqo kubunzima bezinto eziphathekayo, ukuqhuba, kunye nemeko yomphezulu.
1. Ulawulo oluchanekileyo lwe-Welding yangoku kunye nexesha
Okwangoku ayingo "phezulu kungcono" ukuguquguquka; kunokuba, ifuna iwindow eyiyeyona. Umsinga omncinci kakhulu uyasilela ukwenza i-nugget efanelekileyo, ngelixa ixesha elininzi langoku likhokelela kwisitshizi.
| Uhlobo lwezinto eziphathekayo | Ukutyeba (mm) | Unyanzeliso lwe-Electrode olucetyiswayo (kN) | eCetyisiweyo yangoku (kA) | Ixesha leWeld (ms/Cycles) |
| Intsimbi yeKhabhoni ePhantsi (0.8-1.0mm) | 0.8–1.0 | 2.0 – 2.5 | 6.5 – 8.5 | 120–200 (6-10 imijikelo) |
| Intsimbi yeGalvanized (1.0-1.5mm) | 1.0–1.5 | 2.5 – 3.5 | 7.5 – 9.5 | 150–250 (7-12 imijikelo) |
| Ingxubevange yeAluminiyam (1.0-2.0mm) | 1.0–2.0 | 3.0 – 4.0 | 12 – 18 | 80–150 (4-8 imijikelo) |
| Intsimbi engatyiwa (0.8-1.5mm) | 0.8–1.5 | 2.2 – 3.0 | 7.0-10.0 | 120–200 (6-10 imijikelo) |
Iingcebiso ngoThintelo lwe-Spatter:
- Isiqalo esithambileyo/Ithambeka langoku:Sebenzisa i-slope yangoku ukunqanda imveliso yamandla egcweleyo ngephanyazo. Ngokunyusa ngokuthe ngcembe i-current kwimijikelezo embalwa yokuqala, indawo yoqhagamshelwano ifudumala ngobumnene, ivumela amandla e-electrode ukuba asebenzise ngokupheleleyo umqobo wayo kwaye acinezele ngokufanelekileyo i-spatter.
- Phezulu{{0}Isicwangciso-qhinga seMathiriyeli yokuSebenza:Kwimathiriyeli esebenza kakhulu efana neealloyi zealuminiyam, ezinendawo yokunyibilika esezantsi, iqhinga eliphezulu{{0}langoku, ixesha elifutshane{1}}lokuwelda liyafuneka. Ukunciphisa ukugqithisa kwamandla, umsinga kufuneka ucuthwe kancinci nge-10% -15% ukusuka kwinqanaba eliphezulu elamkelekileyo, ngaphandle kokuba i-sound weld nugget isaqulunqwa.
2. Ibhalansi eDynamic yokuCwina kunye neForge Pressure
Amandla asetyenziswa yi-electrode yeyona nto ibalulekileyo yomatshini ethintela isinyithi esinyibilikisiweyo kwaye ikhusela ukutshiza. I-Welding ibandakanya izigaba ezimbini zoxinzelelo ezibalulekileyo:
- Inqanaba lokucudisa (Phambili{0}}weld):Ukusetyenziswa ngaphambi kokuhamba kwangoku, injongo yayo kukuqinisekisa ukuqhagamshelana okuzinzile kunye okufanayo phakathi kwezinto zokusebenza kunye ne-electrodes, ukuphelisa izikhewu kunye nokuseka ukuchasana koqhagamshelwano oluzinzileyo. Ixesha lokucudisa eliKhulu okanye elilingana ne-100 milliseconds liyacetyiswa ukuqinisekisa ukuba inkqubo yomatshini ibandakanyeka ngokupheleleyo. Ixesha elingonelanga lokucudiswa ngunobangela ophambili wokuxhathisa okuphezulu kwendawo kunye nokuqhuma kwe-spatter.
- Inqanaba loxinzelelo lwe-Forge (Bamba):Uxinzelelo olugcinwe emva kokuba i-current ivaliwe de i-weld nugget iqina. Uxinzelelo olwaneleyo lwe-forge lucinezela ngokufanelekileyo i-shrinkage voids kwaye lunyanzelise ngakumbi isinyithi esityhidiweyo, sithintela ukugxothwa kwayo ngexesha lokupholisa. Ukunciphisa ngokusebenzayo i-spatter, kuyacetyiswa ukuba ukwandise uxinzelelo lwe-forge nge-10% -20% xa kuthelekiswa nezicwangciso zendabuko, ukubonelela ngokunyanzeliswa komatshini.
Iinguqu ezifihliweyo: Umsebenzi kunye noLawulo lwe-Electrode
Imiba emininzi yesitshizi ayiveli kwiiparamitha zombane kodwa ekutyesheleni "izinto ezifihlakeleyo" zezinto zokusebenza kunye nee-electrode.
1. I-Workpiece Surface Ungcoliseko: I-Spatter Catalyst
Ukungcola kwindawo yokusebenza (efana neoli, i-rust, i-oxides, okanye i-stamping burrs) yizona zizathu eziphambili zokumelana nokungazinzi koqhagamshelwano. Ezi zingcolisi zibangela uxinaniso lwangoku, lubangela "i-micro{1}}i-explosion" effect.
- Idatha egunyazisiweyo:Uvavanyo lwemizi-mveliso lubonisa ngokungathandabuzekiyo ukuba izinto zokusebenza ezicocwe kakuhle zaza zanyangwa zinokucutha izinga lokwenzeka kwe-spatter ngama-40% ukuya kuma-60% xa kuthelekiswa namalungu angacocekanga.
- Unyango loMphezulu oluCetyisiweyo:
- Intsimbi yeCarbon ephantsi: Sula ngotywala okanye usila kancinci ukususa umhlwa ongaphezulu.
- I-Stainless Steel / i-Aluminiyam: Unyango oludibeneyo lwe-shot blasting / sanding kunye ne-degreasing iyanconywa ukuqinisekisa umgangatho ophezulu wokucoceka kwendawo.
2. I-Electrode Wear: I-Spatter Accelerator
Ubume kunye nemeko ye-electrode tip inquma ngokuthe ngqo ukuxinana kwangoku kunye nokusabalalisa uxinzelelo. I-electrode mushrooming okanye i-oxidation ikhokelela ku:
- Ukongezwa kwendawo yoQhagamshelwano: Ukuxinana kwangoku kwehla ngokukhawuleza, ukuthintela izinto ekufikeleleni kwiqondo lokushisa lokudibanisa ngaphakathi kwexesha elimiselweyo.
- I-Blurred Nugget Edges: Ukukhula kwe-Weld nugget akulawuleki, okwenza i-spatter ibe lula ngakumbi.
IiNdlela zokuLungiswa okuLungileyo:
- Ukugqoka rhoqo: Ngokuxhomekeke kumjikelezo wemveliso, kucetyiswa ukuba ugqoke ngobumnene iingcebiso ze-electrode zonke ii-1-2 shifts ukubuyisela imilo yejometri yokuqala.
- Ukuphuculwa kwezinto eziphathekayo: Ukusebenzisa{0}}ii-caps ze-electrode zokusebenza eziphezulu, ezifana ne-Aluminium Oxide Copper (Al₂O₃-Cu), inikezela ngokunxiba okuphezulu kunye nokumelana nobushushu, ukwandisa ubomi be-electrode ngama-2 ukuya kwamaxesha e-3.
UQinisekiso lweNkqubo: Ukupholisa kunye noPhuculo oluPhezulu lweNkqubo
Nokuba kukho iiparamitha eziphuculweyo kunye nolawulo olucokisekileyo lwesixhobo sokusebenza, imiba yesitshizi inokuqhubeka ngaphandle kwesiqinisekiso esisebenzayo senkqubo.
1. INkqubo yokuPholisa: Isizinzisi esingasukiyo
Ubushushu be-Electrode yinto ebalulekileyo echaphazela ukuchasana noqhagamshelwano kunye nesantya sokutshiza. Xa ubushushu be-electrode budlula i-450 degree, ukuchasana kwezinto ze-electrode kwanda ngokukhawuleza, okukhokelela ekungalingani kwe-thermal kunye nokunyuka okubonakalayo kwi-spatter probability.
| Into | Uluhlu olucetyiswayo | Umsebenzi |
| Uxinzelelo lwamanzi | 0.15 - 0.2 MPa (22–29 psi) | Uqinisekisa izinga lokuhamba kunye noxinzelelo oluzinzileyo. |
| Ubushushu baManzi |
5 – 30 isidanga (41–{3}} isidanga F) |
Uluhlu oluchanekileyo lokupholisa. |
| Ukuhamba kwamanzi | Inkulu kune okanye ilingana neeLitha ezi-4/Umzuzu (L/min) | Iqinisekisa ukususwa kobushushu okwaneleyo ukugcina ubushushu obuphantsi be-electrode. |
Ingcebiso yokuLondoloza: Hlola rhoqo kwaye ucoce isikali kunye nezithintelo ukusuka kwisekethe yamanzi okupholisa ukuqinisekisa ukusebenza ngokufanelekileyo kokupholisa.
2. Uphuculo lweNkqubo eNgxaki: Mid{1}}I-Frequency ngqo ngoku
Iintsimbi zemveli ezitshintshanayo zangoku (AC) zibonisa ukuguquguquka kwangoku. I-Mid-I-Frequency Direct Current (MFDC) inverter welders inika isisombululo sokunciphisa i-spatter kumthombo.
- I-advanteji: I-MFDC isebenzisa i-frequency ephezulu ({0}}i-frequency (dynamic frequency frequency) Enkulu kuno okanye ilingana ne-1000 Hz) imveliso ye-DC, ekhokelela kubume obugudileyo, obuqhubekayo obukhoyo obungenaziro{2}}indawo zokunqumla. Oku kuvumela igalelo elichanekileyo kunye nokulawulwa kwamandla, ukuphepha ngokufanelekileyo ukugqithisa kwamandla okunokuthi kwenzeke ngexesha lokunyuka kunye nokuwa kwe-AC welders.
- Inkxaso yedatha: Uphononongo lubonisa ukuba i-welders ye-MFDC inokunciphisa izinga le-spatter nge-30% -50% xa kuthelekiswa ne-welders yendabuko ye-AC, ngelixa ikwafezekisa malunga ne-10% yokusetyenziswa kwamandla aphantsi.
3. Ukhuseleko loMzimba: Anti{1}}ii-Arhente zeSpatter
Ukufaka amanzi{{0}esekelwe okanye uncamathisele i-anti{1}}iarhente yokutshiza kwindawo yokuwelda yenza ifilim ekhuselayo kumphezulu womsebenzi. Le filimu ikhusela ngokufanelekileyo i-spatter ekubambeleleni kwii-electrode, izixhobo, kunye ne-workpiece, evumela ukuba i-spatter isuswe ngokulula emva kwe-welding, ukwandisa ukusebenza kakuhle kokucoca ngaphezu kwe-70%.
Isixhobo esiSebenzayo: Uluhlu loShishino loShishino{0}}Uluhlu loThintelo lweSpatter
Ukulungelelanisa kunye nokumisela iinzame zothintelo lwesitshizi, olu luhlu lulandelayo{0}}loluhlu lokukhangela luyacetyiswa:
| Isigaba | Into yoHlolo | Indawo yokulawula engundoqo | Ukusombulula ingxaki ngokubaluleka |
| Ngaphambi{0}uLungiselelo lweWeld | Iworkpiece Surface Ukucoceka | Qinisekisa ukuba akukho oli, iioksidi, okanye iirhasi. | N/A |
| Imeko ye-Electrode | Jonga ingcebiso yejometri; nxiba ukuba kuyimfuneko. | N/A | |
| Inkqubo yokupholisa | Qinisekisa ubushushu bamanzi, uxinzelelo, kunye nokuhamba kungaphakathi koluhlu olucetyiswayo. | N/A | |
| Ngexesha le-Welding | Iiparamitha zeWelding | Qinisekisa ukuqala okuthambileyo kuyasebenza; ubukhulu bezinto eziphathekayo kunye nexesha lomdlalo. | 1. Khangela i-Force Setting |
| Ukunyanzelisa inkqubo | Qinisekisa ixesha elaneleyo lokucudisa kunye nokusetha ngokufanelekileyo koxinzelelo lweforge. | 2. Jonga ukucoceka koMphezulu | |
| Ujongo lwexesha lokwenyani- | Ukubeka iliso kwiigophe zangoku kunye nokunyanzeliswa; yeka ngoko nangoko ukuba iziphazamiso zibhaqiwe. | 3. Khangela iNkqubo yokupholisa | |
| Thumela -Uhlolo lweWeld | Umgangatho weNugget | Jonga idiameter ye-nugget kunye namandla okucheba ngokuchasene nemigangatho. | 4. Jonga i-Electrode Wear |
| Inqanaba leSpatter | Rekhoda ibakala lokutshiza; ukuba ayiqhelekanga, lungisa ingxaki ngokoluhlu oluphambili. | 5. Khangela iiParameters zangoku / zeXesha |
Ukuqukumbela
I-Spot weld spatter ngumba onzima kodwa olawulekayo kwi-resistance welding. Ngokulungelelanisa iinzame kwimilinganiselo emithathu-ukusetwa kweparamitha, icwecwe kunye nolawulo lwe-electrode, kunye nezixhobo kunye nophuculo lwenkqubo-abavelisi banokunciphisa ngokubonakalayo amazinga okutshiza, okukhokelela ekutsibeni kumgangatho wokuwelda.
Sikhuthaza bonke abasebenzisi ukuba bajonge ukulungiswa kweparameter njengenkqubo eqhubekayo yokuphucula. Ngokwamkela itekhnoloji ephucukileyo efana ne-MFDC kunye nokubambelela kwiinkqubo zokusebenza ezivakalayo ngokwesayensi, unokufezekisa imeko efanelekileyo yomgangatho ophezulu, isitshizi esisezantsi, kunye nobomi obandisiweyo be-electrode kwimisebenzi yakho yokuwelda. Ukusebenzisa itekhnoloji ukuxhobisa ukwenziwa, sinokwenza ikamva elichaneke ngakumbi nelisebenzayo kwishishini kunye nokuwelda indawo.
