Brazing The Delicate Craftsman for Precision Joining

Brazing baya narkar da karfen tushe amma yana samun shiga ta hanyar narkewar ƙaramin ƙarfe mai narkewa mai narkewa don cike giɓi. Yana fasalta lebur waldi da ƙananan nakasawa, yana mai da shi dacewa da daidaitattun abubuwan walda, kayan da ba su da kama da juna, da sifofi masu rikitarwa. Babu makawa a fannoni kamar na'urorin lantarki, sararin samaniya, da kayan aikin likita. Bisa ga narkewar karfen filler, brazing ya kasu kashi biyu: brazing mai laushi da tauri.

(I) Soft Brazing: The "Micro-Joining" don Kayan Aikin Lantarki

Ƙarfe mai laushi yana amfani da ƙarfe mai cike da brazing tare da wurin narkewa ƙasa 450°C. Ƙarfe ɗin filler ɗin da aka saba amfani da shi shine gami da gubar dalma (a hankali an maye gurbinsa da gwangwani mara gubar). Ana amfani da ruwa a lokacin walda don cire fina-finan oxide da rage tashin hankali. Ya dace da madaidaicin haɗa na'urorin lantarki, allunan kewayawa, da haɗin gwiwar bututun ruwa, waɗanda siyar da ita ita ce mafi kyawun fasahar brazing mai laushi.

1. Soldering: The "Basic Skill" for Circuit Board Welding

Ƙa'ida: Ƙarfe na ƙera kayan aiki (zazzabi 250-350 ° C), yana narkar da waya maras gubar (ma'anar narkewa kamar 227 ° C). Karkashin aikin jujjuyawar, kwanon da aka narkar da shi yana cika ratar da ke tsakanin fitilun abubuwan da ke cikin da'ira, tare da kafa haɗin gwiwa na solder bayan sanyaya.

Wuraren Aiki:

Pre-Welding Cleaning: Yi amfani da takarda yashi don goge filaye da pads don cire yadudduka na oxide; shafa allon da'ira da barasa don cire tabon mai kuma kauce wa sayar da sanyi.

Dabarun dumama: Da farko, kawo tip ɗin ƙarfe na ƙarfe a cikin hulɗa da kayan aiki (mahadar fil da kushin). Bayan dumama na 1-2 seconds, ciyar da tin waya. Ka guje wa dumama waya ta gwangwani kai tsaye, wanda zai iya haifar da "sanyi soldering" (narkakken tin ya kasa jika kayan aikin gabaɗaya).

Sarrafa Haɗin gwiwar Solder: Adadin waya na gwangwani ya kamata ya zama "isasshen cika gibin ba tare da ambaliya ba." Ƙungiyar solder ya kamata ya zama "conical." Kar a girgiza abin kafin a sanyaya don hana karyewar hadin gwiwa.

(II) Hard Brazing: "Babban Garanti" don Ƙarfin Ƙarfi Mai Ƙarfi

Hard brazing yana amfani da ƙarfe mai cike da brazing tare da wurin narkewa sama da 450°C. Abubuwan da aka saba amfani da su na brazing sune ƙarfe-zinc alloy (filler brazing na tagulla) da gami da tushen azurfa (filler brazing na azurfa). Yana da yanayin zafin walda mai girma da ƙarfin walda mai ƙarfi, yana mai da shi dacewa da walda ingantattun abubuwa masu ƙarfi kamar yankan kayan aikin, masu musayar zafi, da injin injin iska.

Wuraren Aiki: Sanya ƙarfen tushe kafin waldawa (zazzabi 300-500 ° C) don tabbatar da cikakken kwararar ƙarfen filler ɗin brazing; yi amfani da juzu'i irin su borax da boric acid don cire fim ɗin oxide a kan tushen ƙarfe na tushe; yi jinyar sanyaya jinkirin bayan walda (misali, ajiyewa a cikin akwatin rufewa) don hana fasa da bambance-bambancen zafin jiki da ya wuce kima.

(III) Tsarin Zaɓa da Ci gaban Hanyoyin Waƙa

Fuskantar hanyoyin walda iri-iri, yadda za a zaɓi fasahar da ta dace daidai da ainihin buƙatu shine mabuɗin haɓaka ingancin walda da inganci. A lokaci guda kuma, tare da haɓaka fasahar masana'antu, fasahar walda kuma tana haɓaka zuwa "hankali da kore."

(IV) Mahimman Abubuwa don Zaɓin Hanyar Welding

Halayen Ƙarfe na Base: Don ƙananan ƙarfe na carbon, ana ba da fifiko ga SMAW da CO₂ walda; don bakin karfe, TIG waldi da waldi na laser sun fi son; don aluminium alloys, AC TIG waldi an zaɓi; don kayan aikin lantarki, ana amfani da soldering.

Bukatun samfur: Don daidaitattun abubuwan da aka gyara (kamar sassan sararin samaniya), ana zaɓar waldawar laser da walƙiya TIG; ga sassan da aka samar da yawa.