Gabatarwa
A cikin filayen masana'antu kamar masana'antar kera motoci da samar da kayan aikin gida, ingancin haɗin gwiwar welded kai tsaye yana ƙayyade ƙarfin tsari da rayuwar sabis na samfuran. TheMatsakaici Mitar Spot Welder, Kamar yadda core kayan aiki a zamani juriya waldi, dole ne hadu stringent bukatu fadin mahara girma dabam ciki har da kayan kimiyya, inji Properties, da kuma tsari kwanciyar hankali. Wannan labarin a tsanake yana nazarin tsarin nuna alama mai inganci don haɗin gwiwa da aka samar ta hanyar matsakaicin matsakaicin tabo walda daga mahalli uku: ƙa'idodin ƙasa da ƙasa, sigogin tsari, da hanyoyin gwaji, samar da nassoshi sarrafa fasaha don masana'antun masana'antu.
I. Babban Tsarin Inganci na Matsakaicin Matsakaicin Matsakaicin Haɗin Welder
Dangane da ka'idodin ISO 14373 da GB/T 10433, ingantattun haɗin gwiwar da aka kafa taMatsakaici Mitar Spot Welderdole ne ya cika muhimman buƙatu guda huɗu:
- Sarrafa Girman Nugget
Bukatar Diamita: Diamita na nugget dole ne ya kai (√t) × (4 ~ 5) mm (inda t shine kauri na takardar bakin ciki). Alal misali, lokacin walda 1.2mm galvanized karfe takardar, da nugget diamita ya kamata a sarrafa tsakanin 4.8 ~ 6.0mm.
Matsakaicin Matsakaicin Matsakaicin Shiga: Nugget zurfin shigar cikin kayan tushe dole ne ya zama mafi girma ko daidai da 20% na kauri, kuma bambancin shigar shigar tsakanin zanen gadon biyu bai kamata ya wuce 15% ba.
- Manufofin Ayyukan Injini
Shear Strength: Must be>=350MPa for mild steel joints and>=220MPa for aluminum alloy joints. Gwaje-gwaje akan akwatunan batirin abin hawa na makamashin da aka welded ya nuna cewa ana sarrafa juzu'in canjin ƙarfi na mahaɗin da aka yi tare da matsakaicin mitar tabo walda a cikin ± 5%.
Rayuwar gajiyawa: DP780 high{1}}ƙarar haɗin gwiwar ƙarfe da aka welded ta matsakaicin mita dole ne su sami ƙarfin gajiya Mafi girma ko daidai da 180MPa ƙarƙashin nauyin sake zagayowar 10^6.
- Ƙayyadaddun ingancin saman saman
Zurfin Shiga: Dole ne kada ya wuce 15% na kauri. Don 0.8mm sanyi - birgima na takarda, wannan yana nufin ƙasa da ko daidai da 0.12mm.
Spatter Control: No more than 3 spatter particles with diameter >0.5mm a kowane wuri mai walda. Matsakaici tabo walda na iya rage abin da ya faru na spatter zuwa ƙasa da 2% ta hanyar fasahar inverter DC.
- Bukatun Microstructural
Zafi{0}}Fasin yankin da abin ya shafa Kasa da ko daidai da 0.4mm, abun ciki na martensite<8% (for dual-phase steel), and grain size controlled at ASTM grade 10 or higher. Data from a home appliance company shows that 304 stainless steel joints welded with medium frequency achieved a grain size of grade 12, significantly better than those from traditional AC welders.
II. Tasiri Mechanism na Matsakaicin Matsakaicin Matsakaicin Matsayin Tsarin Welder akan Inganci
TheMatsakaici Mitar Spot Welderyana tabbatar da ingancin haɗin gwiwa ya dace da ma'auni ta hanyar sarrafa daidaitattun sigogi guda uku:
- Daidaiton walda a halin yanzu (± 1.5%)
Girman halin yanzu yana buƙatar isa 80 ~ 120A/mm². Kwarewa a cikin injin kera motoci ya nuna cewa haɓaka halin yanzu daga 8kA zuwa 9kA ya ƙaru diamita na nugget daga 5.1mm zuwa 6.3mm da ƙarfin ƙarfi da 18%.
Yanayin kulawa na yau da kullun na yau da kullun na fasahar inverter na matsakaici yana kawar da tasirin canjin grid, yana tabbatar da kwanciyar hankali na yanzu ya kai 99.5%.
- Ikon Lokacin walda (1 ~ 500ms)
Kuskuren lokaci dole ne ya zama ƙasa da ko daidai da ± 0.5ms. Lokacin walda 0.6mm +1.0mm daban-daban zanen gadon kauri, ta amfani da sarrafa lokaci guda uku- (pre{5}} matsawa 50ms, walda 200ms, riƙe 100ms) tare damatsakaicin mita tabo waldaingantattun daidaiton ƙugiya da kashi 40%.
- Ƙarfafa Matsalolin Electrode (± 2%)
Matsakaicin matsi yawanci 2 ~ 6kN ne. Juyin matsin lamba na iya haifar da karkatacciyar diamita har zuwa ± 0.3mm. Wani mai kera kayan farin kaya ya yi amfani da tsarin matsa lamba na servo na matsakaicin mitar tabo walda don sarrafa canjin matsa lamba tsakanin ± 0.05kN.
III. Hanyoyin Gwajin inganci da Tsarin Sarrafa Tsari
- Gwajin lalata
Gwajin Chisel: Yana amfani da kayan aikin weji na digiri 45 don raba wurin walda. Ƙwararren ƙwanƙwasa ya kamata ya kasance a kan kowane takarda. Gwaje-gwajen tabbatarwa akan sabon ƙirar baturi mai walƙiya sun nuna ƙimar wucewa na 99.7%.matsakaicin mita tabo waldagidajen abinci.
Gwajin Metallographic: Yana amfani da microscope na lantarki 500x don lura da gunkin giciye{1}}. Porosity dole ne ya kasance<5% and crack length <0.1mm.
- Dabarun Ƙwararrun Gwaji (NDT) ba -
Gwajin Ultrasonic: Yin amfani da bincike na 10MHz na iya gano lahani sama da Φ0.3mm. Kamfanin injin mota ya haɗu da matsakaicin mitar walda tare da bincike na ultrasonic C{3}, yana samun ƙimar gano lahani akan layi na 98.5%.
Gwajin X{0}ray: Ƙaddamarwa har zuwa 5μm na iya gano ɓarna na raguwa a cikin ƙugiya, musamman dacewa da sararin samaniya - welding aluminium alloy welding.
- Kula da Tsarin Dijital
Matsakaicin mitar tabo waldahaɗa na'urori masu lura da juriya masu ƙarfi. Ta hanyar tattara lanƙwan juriya a ainihin lokacin - yayin walda (duba adadi), ƙila za a iya annabta rashin ingancin ingancin 10ms a gaba. Bayan aiwatar da wannan fasaha, kamfani ɗaya ya rage yawan lahani na tsari daga 0.8% zuwa 0.12%.
Tsarin nazari da yawa{0}parameter协同Analysis (na yanzu{1}matsi{2}maura) yana amfani da koyon injina don gina bayanai na saitin tsari na 2000, yana samun daidaiton tsinkaya mai inganci na 92%.
IV. Mabuɗin Hanyoyi na Fasaha don Inganta Ingancin
- Haɓaka Daidaituwar Material
Ƙirƙirar shirye-shiryen walda da aka keɓe don kayan da aka rufa, kamar yanayin "Slow{0}} tashi halin yanzu" don zanen karfe mai galvanized, inganta haɓakar tururi na zinc da kashi 60% da rage spatter.
- Fasahar Raya Mai Hankali
Tsarin sawa na lantarki ta atomatik yana auna canje-canjen diamita na lantarki (daidai 0.01mm) kuma yana daidaita walƙiya a halin yanzu (± 3%), yana tsawaita rayuwar sabis na lantarki da sau 2.5.
- Rufe -Irin Madaidaicin Tsari na Madauki
Tagwayen dijital{0} tushen dandali na inganta sigina yana ƙididdige madaidaicin taga walda ta hanyar simintin kama-da-wane. Aikace-aikace akan layin samar da na'urar kwandishan kwandishan ya rage lokacin lalata tsari da kashi 70%.
Kammalawa
Ƙarƙashin tushen masana'antu na masana'anta mai kaifin baki da haɓaka inganci, kula da inganci donMatsakaici Mitar Spot Welderhaɗin gwiwa ya samo asali daga alamar ƙarfi guda ɗaya zuwa tsarin aikin injiniya na tsari wanda ya ƙunshi ƙananan tsarin, aiki mai ƙarfi, da kwanciyar hankali. Ta hanyar haɗin fasahar sarrafa dijital da hanyoyin gwaji na hankali, matsakaicin matsakaicin tabo na zamani na zamani na iya daidaita ƙimar cancantar haɗin gwiwa sama da 99.9% kuma rage farashin asara da kashi 60%. Tare da aiwatar da sabbin ka'idoji kamar IEC 62108 da zurfin aikace-aikacen hangen nesa na na'ura da manyan fasahohin masana'antu, kulawar inganci don matakan walda matsakaicin mitar tabo ba makawa za su matsa zuwa mafi girma na zamani na fasaha, yana ba da ƙarin tabbacin haɗin gwiwa don haɓaka masana'antu- ƙarshe.
