Iyo fomu yearc welding droplet yakawandisa

Zvinoenderana neiyo welding parameters kubva kudiki kusvika kuhombe, iwo: pfupi-circuit shanduko, droplet shanduko, spray transition.
1. Short-circuit shanduko

Droplet yakanyungudutswa pamagumo e electrode (kana waya) iri mupfupi-circuit kusangana nedziva rakanyungudutswa. Nekuda kwekupisa kwakasimba uye magineti contraction, inotyoka uye yakananga shanduko kune yakanyungudutswa dziva. Izvi zvinonzi short-circuit transition.

Short-circuit shanduko inogona kuwana yakagadzikana simbi droplet shanduko uye yakagadzikana welding process pasi peyakaderera-simba arc (yakaderera ikozvino, yakaderera arc voltage). Naizvozvo, yakakodzera kupinza mahwendefa matete kana welding ine yakaderera kupisa kupinza.

Maparamita akawanikwa ndeaya: welding ikozvino isingasviki 200A

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2. Droplet transition (granular transition)

Kana iyo arc kureba ichipfuura imwe kukosha, iyo yakanyungudutswa droplet inogona kuchengetwa kumagumo e electrode (kana waya) kuti ikure zvakasununguka nekuita kwekushushikana kwepasi. Kana simba rinoita kuti donhwe rakanyungudutswa ridonhe (senge giravhiti, simba remagetsi emagetsi, zvichingodaro) rakakura kudarika kudzvanya kwepamusoro, donhwe rakanyungudutswa rinosiya electrode (kana waya) uye rakasununguka richienda kudziva rakanyungudutswa pasina pfupi pfupi, sezvaratidzwa Mufananidzo 4.

Iyo Droplet yekuchinja fomu inogona kukamurwa kuita yakaomarara kudonhedza shanduko uye yakanaka Droplet shanduko. Coarse droplet transition ichimiro umo donhwe rakanyungudutswa rinoshandura zvakasununguka kuenda kudziva rakanyungudutswa riri muchimiro chezvidimbu zvakakasharara. Sezvo coarse droplet shanduko ine yakakura splashes uye isina kugadzikana arc, haina kudiwa kune welding basa.

Munguva yewelding process, saizi yedonhwe rakanyungudutswa rine hukama neiyo welding ikozvino, kuumbwa kwewaya yewelding, uye kuumbwa kwejasi.

Mamiriro ekugadzirisa ndeaya: welding ikozvino 200-300A (100% CO2), argon-rich yakasanganiswa gasi 200-280A.

3 Spray shanduko (inonziwo jet shanduko)

Chimiro icho madonhwe akanyungudutswa ari muchimiro chezvimedu zvakanaka uye nekukurumidza kupfuura nepakati penzvimbo yearc kuenda kune yakanyungudutswa dziva mune yekupfapfaidza inonzi kupfapfaidza shanduko. Kukura kwedonhwe rakanyungudutswa kunoderera nekuwedzera kweiyo welding ikozvino.

Kana iyo arc kureba ichigara, kana welding ikozvino ichiwedzera kune imwe kukosha, iyo spray transition state inooneka. Izvo zvinofanirwa kusimbiswa pano kuti mukuwedzera kune imwe yazvino density, imwe arc kureba (arc voltage) inofanirwa kudikanwa kugadzira shanduko yekupfapfaidza. Kana iyo arc voltage yakanyanya kuderera (kureba kwearc ipfupi), zvisinei kuti yakakura sei kukosha kwazvino, hazvibviri kuburitsa shanduko yespray.

Hunhu hwekupfapfaidza shanduko yakanaka madonhwe akanyungudutswa, yakakwira shanduko frequency, madonhwe akanyunguduka anofamba akananga kudziva rakanyungudutswa nekumhanya kukuru achitevedza axial nzira yewelding waya, uye ane mabhenefiti eyakagadzika arc, diki spatter, yakakura kupinda, yakanaka weld. kuumbwa, uye kushanda kwepamusoro kwekugadzira.