Menene haɗin kai tsaye, menene haɗin kai tsaye na yanzu, da kuma yadda za'a zaɓa lokacin walda

1. Haɗin gaba na DC (watau hanyar haɗin kai):

Hanyar haɗin gaba tana nufin hanyar wayoyi da ake amfani da ita don auna ma'aunin asarar dielectric a gwajin da'irar Xilin gada. Matsakaicin asarar dielectric da aka auna ta hanyar haɗin gaba kadan ne, kuma ma'aunin asarar dielectric da aka auna ta hanyar haɗin baya yana da girma. Idan aka kwatanta da hanyar haɗin baya, hanyar haɗin gaba na iya rage tasirin juriya na saman antihalo akan ƙimar gwajin hasarar dielectric.

2. Haɗin juyawa na DC (watau hanyar haɗi):

Yana nufin hanyar haɗin da'ira yayin walda. A cikin waldawar tungsten, haɗin haɗin DC yana da tasirin cire fim ɗin oxide, wanda ake kira "cathode fragmentation" ko "cathode atomization".

Tasirin cire fina-finan oxide shima yana wanzuwa a cikin juzu'i na tsaka-tsaki na walda AC. Yana da mahimmanci a cikin nasarar walda aluminum, magnesium da kayan haɗin su.

3. Lokacin waldi, kana buƙatar zaɓi musamman haɗin haɗin kai na DC ko haɗin baya na DC bisa ga buƙatun kayan walda.

Aiki ya tabbatar da cewa lokacin da aka haɗa DC a baya, ana iya cire fim din oxide a saman aikin aikin a ƙarƙashin aikin arc don samun walƙiya mai haske, kyakkyawa da kyau. Idan za a iya raba sandar waya daga ƙasa, gwajin wurin ya kamata ya yi amfani da ingantaccen hanyar haɗin gwiwa gwargwadon yiwuwa.

Kayan aikin walda na Xinfa yana da halaye masu inganci da ƙarancin farashi. Don cikakkun bayanai, da fatan za a ziyarci:Welding & Yanke Manufacturers - China Welding & Yanke masana'anta & Suppliers (xinfatools.com)

Karin bayani

Ka'idar haɗin baya na DC:
Lokacin da aka juya DC, ana iya cire fim din oxide a saman aikin aikin a ƙarƙashin aikin arc don samun walƙiya mai haske, kyakkyawa da kyau.

Wannan shi ne saboda karfe oxides suna da ƙananan ayyuka na aiki kuma a sauƙaƙe suna fitar da electrons, don haka cathode spots suna da sauƙin samuwa akan fim din oxide kuma suna haifar da arcs. The cathode spots suna da dukiya ta atomatik neman karfe oxides.

Ƙarfin makamashi na wurin cathode yana da girma sosai, kuma an buga shi da ions masu kyau tare da babban taro, wanda ya karya fim din oxide.

Duk da haka, tasirin zafi na haɗin baya na DC yana da lahani ga waldi, saboda anode na tungsten argon arc waldi yana zafi fiye da cathode. Lokacin da polarity ya koma baya, electrons suna jefa bama-bamai a tungsten electrode kuma su saki babban adadin zafi, wanda zai iya yin zafi sosai kuma ya narke tungsten electrode. A wannan lokacin, idan za a wuce na'urar walda ta 125A, ana buƙatar sandar tungsten mai diamita na kusan 6mm don hana narke tungsten.

A lokaci guda, saboda babu makamashi da yawa da aka saki akan walda, zurfin shigar da weld ɗin ba shi da zurfi kuma mai faɗi, yawan aiki yana da ƙasa, kuma kusan 3mm lokacin farin ciki na aluminum za a iya welded. Don haka, ba kasafai ake amfani da haɗin juzu'i na DC ba a cikin walda na tungsten ba sai dai walda aluminum da faranti na bakin ciki na magnesium.