Gas Metal Arc Welding (GMAW): "Zaɓin Da Aka Fi So" don Welding High Quality

Welding Karfe na Gas (GMAW) yana amfani da iskar gas marar aiki ko iskar gas a matsayin matsakaicin kariya don ware tasirin iska akan narkakken tafkin. Yana fasalta ingancin walda mai kyau da kyakkyawan tsarin walda. Ya kasu kashi biyu na al'ada iri: tungsten inert gas waldi (TIG) da CO₂ gas kariya waldi (MIG/MAG), wanda dace da daban-daban kayan da al'amura, bi da bi.

1. Tungsten Inert Gas Welding (TIG Welding): The "Kwararren" a Madaidaicin Welding

welding TIG yana amfani da iskar argon (tsarki ≥99.99%) azaman iskar kariya. Yana heats da workpiece ta cikin baka tsakanin tungsten lantarki da workpiece, kuma za a iya yi tare da ko ba tare da filler waya (autogenous waldi). Ya dace da daidaitattun walda na kayan da aka haɗa da sauƙi kamar bakin karfe, aluminum gami da titanium gami, irin su sassan sararin samaniya, tasoshin matsa lamba, da kayan aikin likita.

Mabuɗin Aiki:

Zaɓin Electrode Tungsten: Yi amfani da ceriated tungsten electrodes don walda bakin karfe da tsarkakakken tungsten lantarki don walda aluminium gami. Daidaita diamita na tungsten electrode bisa ga na yanzu (misali, 2.4mm tungsten electrode don 100-150A halin yanzu). Sarrafa tsayin tsayin lantarki na tungsten a 2-5mm don gujewa hulɗa da waya mai filler, wanda zai iya haifar da ƙonewa na tungsten.

Gas Control: Daidaita da argon kwarara bisa ga workpiece kauri: 8-10L / min ga bakin ciki faranti (≤3mm) da 12-15L / min for lokacin farin ciki faranti (> 5mm). Ƙara lokacin kariyar argon da daƙiƙa 3-5 lokacin ƙare baka don hana haɓakar zafin jiki na walda.

5mm). Ƙara lokacin kariyar argon da daƙiƙa 3-5 lokacin ƙare baka don hana haɓakar zafin jiki na walda.

Fasaha Waya Filler: Ƙara waya mai filler daga gaban narkakken tafkin, guje wa hulɗa kai tsaye tare da baka. Sarrafa saurin waldawa a 5-10cm/min don tabbatar da cikakkiyar haɗuwa da narkakken tafkin kuma kauce wa rashin lahani.

2. CO₂ Gas Garkuwar Welding (MIG/MAG Welding): The "High-Efficiency Expert" don Mass Production

CO₂ gas kariya waldi yana amfani da CO₂ ko gauraye gas na CO₂ da argon a matsayin matsakaicin kariya, tare da ciyar da waya ta atomatik. Yana da babban ƙarfin walda (sau 2-3 na SMAW) da ƙarancin farashi, yana sa ya dace da yawan samar da ƙananan ƙarfe na ƙarfe da ƙananan ƙarfe, kamar jikin mota, kayan aikin gida, da masana'antar kwantena.

Mabuɗin Aiki:

Daidaita Siga: Daidaita daidai da na yanzu da ƙarfin lantarki (misali, 22-24V don 150A na yanzu). Sarrafa tsayin tsawo na waya a 10-15mm (kimanin 5-10 sau diamita na waya); tsayin daka wuce gona da iri na iya haifar da wuce gona da iri, yayin da gajere fiye da kima na iya ƙone bututun ƙarfe.

Kusurwar walda: Ɗauki hanyar walƙiya ta hagu (matsar da fitilar walda daga dama zuwa hagu). Kula da kusurwar 15-25° tsakanin fitilar walda da kayan aikin don tabbatar da cikakken ɗaukar ruwan tafki na narkakkar da iskar gas. Yi amfani da garkuwar iska lokacin da iskar gudun ya wuce 2m/s don hana iskar kariya daga hura, wanda zai iya haifar da porosity.