Yadda za a zabi wani soldering juyi

A mafi muhimmanci kashi don gyara na wani inji ne soldering. Solder, juyi, solder manna - duk da wannan dole ne a yi la'akari lokacin dauke da fitar gyare-gyare. Idan solder duk mun gwada share - wannan yawanci amfani da tin-gubar solders tare da daban-daban narkewa batu (dangane da abun da ke ciki na gami), sa'an nan abin da game da juyi? Mẽne ne a gare?

Babban manufar wani juyi - cire oxides daga samanta, kuma ma rage surface tashin hankali don inganta yada daga cikin solder. Bugu da ƙari, juyi ga soldering hidima don kare maha? Ar daga waje muhalli.

Mene ne fluxes

By ta mataki, exerted a kan karfe saman, fluxes ne na wadannan iri.

• Active (wanda kuma ake kira acidic). A abun da ke ciki ƙunshi hydrochloric acid, fluorides da chlorides karafa. Active brazing juyi dissolves hanzari oxide film kafa a kan karfe surface, game da shi, samar da high inji karfin nan gaba dangane. Ya kamata a tuna cewa aiki juyi ba dace don gyara na lantarki da kayan aiki, kamar yadda ta saurã ƙarshe corrode da soldering.
• Acid-free. Wadannan sun hada da rosin, kazalika da shirya kan rosin juyi da Bugu da kari turpentine, barasa ko glycerin. Acid-free soldering juyi ba kawai wanke karfe surface na oxides, amma kuma kare shi daga m hadawan abu da iskar shaka. Bugu da ƙari kuma, da yin amfani da rosin ba sa lalata da surface. Yawanci amfani ga soldering jan karfe, da tagulla, da ƙarfe kayayyakin.
• Kunna. An shirya daga rosin, a cikin abin da aka kara adadi kaɗan na phosphorus ko aniline hydrochloride, salicylic acid da kuma diethylamine hydrochloride. Kunna juyi ga brazing iya amfani da wani m iri-iri da karafa da kuma gami (ƙarfe, jan, nickel, da tagulla, nichrome, da azurfa, karfe). Yana kuma iya a yi amfani domin brazing sassa sanya na oxidized jan gami ba tare da pre-yanã fizge tufarsu.
• Anticorrosion. Wadannan fluxes ake yi na phosphoric acid tare da Bugu da kari na daban-daban Organic kaushi da mahadi. Bugu da ƙari, cikin abun da ke ciki na wasu daga cikin wadannan fluxes iya hada Organic acid. Lalatattu juyi da ake amfani da brazing tagulla da kuma ta gami, da kuma azurfa, da platinum da constantan.
• M. Wadannan sun hada da man zaitun, waxes, man fetur jelly, powdered sukari. M fluxes ba su da karfe sinadaran mataki, kazalika da kare tsabtace surface daga hadawan abu da iskar shaka.

Bugu da kari, solder kayayyakin daga Cast baƙin ƙarfe, carbon steels, da kuma tagulla da kuma ta gami ana amfani da borax (sodium tetraborate), wanda shi ne wani farin crystalline foda ciwon narkewa zafin jiki na 741 ° ^C.

Har ila yau borax (more daidai, ta cakuda da boric acid a cikin wani rabo na 1: 1) da ake amfani da brazing bakin karfe da kuma m superalloys.

Kamar yadda juyi ga tagulla kayayyakin, a cakuda kunsha na daidai sassan na sodium chloride da alli chloride.

Brazing na aluminum articles ake bukata juyi da ciwon low narkewa batu. Yawanci, da juyi ga aluminum brazing hada da 30 zuwa 50% potassium chloride.

Juyi don soldering za a iya samar a cikin nau'i na foda, ruwa ko manna. Bugu da ƙari, akwai na musamman solder manna a cikin abin da solder barbashi an dauke tare da riga kura idon.

Abin da yake da muhimmanci a san lokacin da brazing

A lokacin da zabar wani brazing juyi ne ɗauke shi zuwa lissafi ba kawai abu daga abin da ya sa sassan da za a soldered, amma wanda yana amfani da solder. Da narkewa batu na juyi kada wuce da narkewa zafin jiki na solder.

Ko da kuwa da irin soldering juyi sarari bayan aikace-aikace ya kamata a goge tare da zane soaked a acetone ko gãfarta ruhu. Bayan haka, tsabtace wannan wuri goga ko goga moistened tare da wani sauran ƙarfi cire juyi sharan. Wannan Gaskiya ne, na aiki juyi, tun da bazuwar kayayyakin ba kawai ƙazantar da brazed amma suna hearth lalata.