{"id":3973,"date":"2026-08-25T08:08:06","date_gmt":"2026-08-25T08:08:06","guid":{"rendered":"https:\/\/nbaem.com\/?p=3973"},"modified":"2026-08-23T04:09:45","modified_gmt":"2026-08-23T04:09:45","slug":"how-to-demagnetize-a-magnet","status":"publish","type":"post","link":"https:\/\/nbaem.com\/ro\/how-to-demagnetize-a-magnet\/","title":{"rendered":"Cum s\u0103 demagnetizezi un magnet \u2013 Ghid u\u0219or pas cu pas"},"content":{"rendered":"<h2>Fizica domeniilor magnetice: cum s\u0103 demagnetizezi un magnet<\/h2>\n<p>C\u00e2nd analiz\u0103m materialele magnetice de \u00eenalt\u0103 performan\u021b\u0103 \u00een aplica\u021bii inginere\u0219ti, \u00een\u021belegerea <strong>modului \u00een care se demagnetizeaz\u0103 un magnet<\/strong> \u00eencepe la nivel subatomic. Magnetizarea nu este o modificare structural\u0103 a materialului, ci o orientare precis\u0103 a vectorului momentelor dipolare atomice.<\/p>\n<h3>Mecanica atomic\u0103: magnetizarea vs. demagnetizarea<\/h3>\n<p>La scar\u0103 atomic\u0103, for\u021ba magnetic\u0103 \u00ee\u0219i are originea \u00een electronii nep\u0103ri\u021bi <strong>spinsul electronului<\/strong>. \u00cen materiale feromagnetice \u0219i ferrimagnetice, aceste momente se aliniaz\u0103 spontan \u00een paralel \u00een interiorul regiunilor microscopice cunoscute drept <strong>domenii Weiss<\/strong>.<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Stare magnetizat\u0103:<\/strong> Un c\u00e2mp extern de magnetizare for\u021beaz\u0103 domeniile Weiss adiacente s\u0103 fuzioneze \u0219i s\u0103 se alinieze \u00eentr-o singur\u0103 direc\u021bie. Aceasta <strong>aliniere a domeniilor magnetice<\/strong> maximizeaz\u0103 densitatea de flux macroscopic\u0103.<\/li>\n<li><strong>Starea demagnetizat\u0103:<\/strong> Energia de demagnetizare perturba aceast\u0103 ordine, sporind orient\u0103rile domeniilor \u00een direc\u021bii aleatorii. Vectorii magnetici neti se anuleaz\u0103, reduc\u00e2nd intensitatea c\u00e2mpului exterior la zero.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Curba buclei de for\u021b\u0103 de isteresi: coercivitatea \u0219i reten\u021bia<\/h3>\n<p>Noi afi\u0219\u0103m r\u0103spunsul unui magnet la energia extern\u0103 folosind <strong>buclele de isteresi<\/strong>. Aceast\u0103 reprezentare grafic\u0103 vizualizeaz\u0103 pragurile de energie necesare pentru a reseta sau neutraliza alinierea domeniilor.<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left;\">Parametru<\/th>\n<th style=\"text-align: left;\">Simbol<\/th>\n<th style=\"text-align: left;\">Semnifica\u021bie industrial\u0103<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left;\"><strong>Remanen\u021ba<\/strong><\/td>\n<td style=\"text-align: left;\"><strong>Br<\/strong><\/td>\n<td style=\"text-align: left;\">Fluxul magnetic rezidual r\u0103mas \u00eentr-un magnet dup\u0103 ce c\u00e2mpul de magnetizare este \u00eendep\u0103rtat.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Coercivitate intrinsec\u0103<\/strong><\/td>\n<td style=\"text-align: left;\"><strong>Hc<\/strong><\/td>\n<td style=\"text-align: left;\">M\u0103sura rezisten\u021bei unui material la demagnetizare din c\u00e2mpuri externe, solicit\u0103ri termice sau stres fizic.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Evaluarea echilibrului dintre <strong>remanent\u0103 (Br)<\/strong> \u0219i <strong>coercivitatea intrinsec\u0103 (Hc)<\/strong> ne permite s\u0103 calcul\u0103m pragul exact al energiei necesare pentru pr\u0103bu\u0219irea alini\u0103rii domeniilor \u0219i neutralizarea cu succes a unui c\u00e2mp magnetic.<\/p>\n<h2>3 metode de baz\u0103: cum s\u0103 demagnetizezi un magnet<\/h2>\n<p>C\u00e2nd construim \u0219i \u00eentre\u021binem ansambluri magnetice, a \u0219ti <strong>modului \u00een care se demagnetizeaz\u0103 un magnet<\/strong> \u00een mod sigur \u0219i inten\u021bionat este la fel de vital ca magnetizarea. Indiferent dac\u0103 \u00eentre\u021bine\u021bi echipamente industriale sau recicla\u021bi componente ale motoarelor, ne baz\u0103m pe trei metode fizice de baz\u0103 pentru a neutraliza intensitatea c\u00e2mpului magnetic.<\/p>\n<h3>Metoda 1: Demagnetizarea termic\u0103 (Tratament termic)<\/h3>\n<p>\u00cenc\u0103lzirea unui magnet permanent peste pragul s\u0103u <strong>temperatura Curie<\/strong> detoneaz\u0103 agitation termic\u0103 intens\u0103, randomizeaz\u0103 momentele dipolilor atomici \u0219i \u0219terge magnetizarea net\u0103.<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Pierderi reversibile vs. ireversibile:<\/strong> \u00cenc\u0103lzirea sub punctul Curie, dar deasupra limitelor maxime de operare provoac\u0103 pierdere de capacitate ireversibil\u0103. Dep\u0103\u0219irea pragului de temperatur\u0103 Curie provoac\u0103 demagnetizare complet\u0103 \u0219i permanent\u0103.<\/li>\n<li><strong>Praguri termice dup\u0103 material:<\/strong><\/li>\n<li><strong>Neodim sinterizat (NdFeB):<\/strong> Temperatura Curie 310\u00b0C\u2013350\u00b0C (temperatura maxim\u0103 de operare: 80\u00b0C\u2013220\u00b0C)<\/li>\n<li><strong>Cobalt de Lant (SmCo):<\/strong> Temperatura Curie 700\u00b0C\u2013800\u00b0C (temperatura maxim\u0103 de operare: 250\u00b0C\u2013350\u00b0C)<\/li>\n<li><strong>Ferrit (Ceramic):<\/strong> Temperatura Curie 450\u00b0C (temperatura maxim\u0103 de operare: 250\u00b0C)<\/li>\n<li><strong>Alnico:<\/strong> Temperatura Curie 860\u00b0C (temperatura maxim\u0103 de operare: 500\u00b0C\u2013550\u00b0C)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Metoda 2: Degajare \u00een curent alternativ<\/h3>\n<p><strong>Degajare \u00een curent alternativ<\/strong> utilizeaz\u0103 un c\u00e2mp electromagnetic alternativ \u00een descompunere pentru a ciclifica polaritatea magnetic\u0103 \u00een mod repetat, mic\u0219or\u00e2nd bucla de hzsteresis p\u00e2n\u0103 la zero f\u0103r\u0103 contact fizic.<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>R\u0103sp\u00e2ndire controlat\u0103 a polarit\u0103\u021bii:<\/strong> O bobin\u0103 industrial\u0103 de degreajare sau un impuls electromagnetic de \u00eenalt\u0103 energie altereaz\u0103 clar alinierea domeniului, l\u0103s\u00e2nd flux magnetic net zero.<\/li>\n<li><strong>Aplica\u021bii Industriale:<\/strong> Folosim configura\u021bii specializate de degreajare atunci c\u00e2nd recondi\u021bion\u0103m ansambluri delicate sau sisteme de ac\u021bionare, cum ar fi un cuplu ridicat <a href=\"https:\/\/nbaem.com\/ro\/what-is-mining-magnetic-coupling-and-how-it-works\/\">cuplaj magnetic minier<\/a>, f\u0103r\u0103 a risca deterior\u0103ri termice ale pieselor \u00eenconjur\u0103toare.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Metoda 3: Demagnetizarea prin \u0219oc mecanic<\/h3>\n<p>Stresul fizic de \u00eenalt\u0103 energie for\u021beaz\u0103 realinierea domeniilor prin tensiune \u00een re\u021beaua de re\u021bea. Totu\u0219i, <strong>demagnetizarea prin \u0219oc mecanic<\/strong> este rareori recomandat\u0103 pentru aplica\u021bii de precizie.<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Deformarea structural\u0103 a re\u021belei:<\/strong> Impactul fizic greu, test\u0103rile de c\u0103dere sau vibra\u021bia industrial\u0103 sever\u0103 perturb\u0103 domeniile Weiss, degrad\u00e2nd cu timpul performan\u021ba magnetic\u0103.<\/li>\n<li><strong>Risc de microfisuri:<\/strong> Materiale fragile precum neodimiul sinterizat \u0219i ferritul sunt predispuse la fisuri microscopice severe \u0219i la defecte structurale mult \u00eenainte de atingerea demagnetiz\u0103rii complete.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Rezisten\u021b\u0103 specific\u0103 material la demagnetizare<\/h2>\n<h3>Coercivitate intrinsic\u0103 (Hc)<\/h3>\n<p>Coercivitatea intrinsic\u0103 (Hc) m\u0103soar\u0103 capacitatea \u00eenn\u0103scut\u0103 a unui material de a rezista demagnetiz\u0103rii din c\u00e2mpuri counter externe puternice. Aprecieri de \u00eenalt\u0103 coercivitate prezint\u0103 o aliniere str\u00e2ns\u0103 a dominilor atomice care rezist\u0103 la polarizarea flip-flop atunci c\u00e2nd sunt expuse la for\u021be magnetice inverse. C\u00e2nd proiect\u0103m circuite magnetice la temperaturi \u00eenalte sau sub stres ridicat, selectarea adecvat\u0103 <a href=\"https:\/\/nbaem.com\/ro\/what-are-the-grades-of-smco-magnets\/\">gradelemagnetilor SmCo<\/a> sau neodimiu cu coercivitate \u00eenalt\u0103 asigur\u0103 stabilitatea magnetic\u0103 pe termen lung.<\/p>\n<h3>Coeficientul de permean\u0163\u0103 (Pc)<\/h3>\n<p>Geometria magnetului influen\u0163eaz\u0103 direct comportamentul auto-demuget\u0103rii prin intermediul coeficientului de permean\u0163\u0103 (Pc), care define\u015fte linia de sarcin\u0103 magnetic\u0103:<br \/>\n<strong>Pc \u00eenalt (Geometrii mai lungi\/mai groase):<\/strong> Un raport \u00een\u0103lime-diametru mare creeaz\u0103 o biasare intern\u0103 puternic\u0103, oferind o rezisten\u0163\u0103 superioar\u0103 la auto-demugetare.<br \/>\n<strong>Pc sc\u0103zut (Forme sub\u0163iri\/plate):<\/strong> geometria discului sub\u0163ire sau a feliilor sufer\u0103 de c\u00e2mpuri auto-demugetante ridicate, sc\u0103z\u00e2nd semnificativ pragul lor \u00een fa\u0163a expunerii la c\u00e2mp magnetic invers.<\/p>\n<h3>Limite de operare ale mediului<\/h3>\n<p>C\u00e2nd se evalueaz\u0103 cum s\u0103 demagnetizeze un magnet sau s\u0103 protejeze ansambluri personalizate \u00eempotriva dec\u0103derii fluxului, factorii opera\u021bionali externi joac\u0103 un rol crucial:<br \/>\n<strong>Limite de temperatur\u0103 de operare:<\/strong> Ridicarea temperaturilor ambientale reduce coercivitatea intrinsec\u0103 (Hc), sl\u0103bind rezisten\u0163a magnetului la c\u00e2mpuri externe inverse.<br \/>\n<strong>Expunerea la c\u00e2mp opus:<\/strong> Interferen\u0163a electromagnetic\u0103 neprotejat\u0103 sau cre\u015fterile tranzitorii ale curentului \u00een stator pot dep\u0103\u015fi for\u0163ele coercive \u015fi <a href=\"https:\/\/nbaem.com\/ro\/cause-demagnetization-in-permanent-magnet-motors\/\">provoc\u0103 demagnetizarea motoarelor cu magnet permanent<\/a>.<br \/>\n<strong>Linii de sarcin\u0103 de demagnetizare:<\/strong> Operarea unui magnet la un punct Pc sc\u0103zut \u00een timp ce se dep\u0103\u0219esc temperaturile maxime de operare duce punctul de func\u021bionare sub genunchiul buclei de hysteresis, provoc\u00e2nd pierdere magnetic\u0103 permanent\u0103.<\/p>\n<h2>Prevenirea demagnetiz\u0103rii neinten\u021bionate \u00een ansambluri personalizate<\/h2>\n<p>Atunci c\u00e2nd se proiecteaz\u0103 ansambluri de magne\u021bi permanen\u021bi pentru motoare electrice, robotic\u0103 \u0219i sisteme auto, prevenirea degrad\u0103rii c\u00e2mpului magnetic sub sarcini opera\u021bionale extreme este crucial\u0103. \u00cen\u021belegerea <strong>modului \u00een care se demagnetizeaz\u0103 un magnet<\/strong> totodat\u0103 ne \u00eenva\u021b\u0103 cum s\u0103 protej\u0103m unul: trebuie s\u0103 proiect\u0103m \u00een jurul temperaturilor \u00eenalte de operare, a c\u00e2mpurilor electromagnetice opuse \u0219i a vibra\u021biilor mecanice severe.<\/p>\n<h3>Selec\u021bia grade-ului de magnet cu coercivitate \u00eenalt\u0103<\/h3>\n<p>Magnetii standard \u00ee\u0219i pierd rapid densitatea fluxului c\u00e2nd sunt expu\u0219i la c\u0103ldur\u0103 sau la c\u00e2mpuri inverse puternice. Specific\u0103m grade cu temperatur\u0103 \u00eenalt\u0103 \u0219i coercivitate \u00eenalt\u0103 adaptate limitelor de mediu specifice:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>NdFeB de \u00eenalt\u0103 temperatur\u0103<\/strong>: Grade precum <strong>N35SH<\/strong> (evaluat p\u00e2n\u0103 la 150\u00b0C) \u0219i <strong>N42UH<\/strong> (evaluat p\u00e2n\u0103 la 180\u00b0C) \u00eencorporeaz\u0103 coercivitate intrinsec\u0103 ridicat\u0103 (Hc) pentru a rezista c\u00e2mpurilor magnetice inverse \u00een sarcini mari ale motorului.<\/li>\n<li><strong>Sm2Co17<\/strong>- A se utiliza pentru mediile extreme ce dep\u0103\u0219esc 200\u00b0C p\u00e2n\u0103 la 350\u00b0C, oferind stabilitate termic\u0103 excep\u021bional\u0103 \u0219i rezisten\u021b\u0103 la demagnetizare.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Modelare FEA \u0219i izolare fizic\u0103<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Analiz\u0103 cu elemente finite (FEA)<\/strong>: Ne baz\u0103m pe modelare magnetic\u0103 avansat\u0103 FEA pentru a simula comportamentul c\u00e2mpului sub curen\u021bi de suprasarcin\u0103 electric\u0103 maxim\u0103, identific\u00e2nd riscurile poten\u021biale de demagnetizare \u00eenainte de testarea dinamic\u0103.<\/li>\n<li><strong>Izolare mecanic\u0103<\/strong>: \u0218ocul structural \u0219i vibra\u021bia continu\u0103 pot deforma aliniamentele domeniului atomic. \u00cencapsularea componentelor \u00een carcase din o\u021bel inoxidabil sau r\u0103\u0219inile potante de \u00eenalt\u0103 rezisten\u021b\u0103 protejeaz\u0103 ansamblurile, precum cele de ac\u021bion\u0103ri robuste <a href=\"https:\/\/nbaem.com\/tl\/what-is-mining-magnetic-coupling-and-how-it-works\/\">cuplaj magnetic minier<\/a> \u00eempotriva unui \u0219oc opera\u021bional sever.<\/li>\n<li><strong>Coeficientul de permean\u021b\u0103 (Pc) - Design<\/strong>: Optimizarea geometriei magnetului\u2014\u00een special men\u021binerea unui raport lungime-la-diametru mai mare\u2014\u00eent\u0103re\u0219te semnificativ magnetul \u00eempotriva demagnetiz\u0103rii de sine.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u00centreb\u0103ri frecvente despre demagnetizarea magne\u021bilor<\/h2>\n<h3>Poate un magnet demagnetizat s\u0103 fie remagnetizat \u00eenapoi la for\u021ba sa original\u0103?<\/h3>\n<p>Da, \u00een majoritatea scenariilor industriale, un magnet demagnetizat poate fi complet restaurat prin plasarea lui \u00eentr-un c\u00e2mp magnetic extern mai puternic dec\u00e2t coercivitatea sa original\u0103. \u00cen instala\u021bia noastr\u0103, folosim magnetizatoare cu descarcare de capacitoare de \u00eenalt\u0103 energie pentru a for\u021ba <strong>aliniere a domeniilor magnetice<\/strong> revenirea la satura\u021bia complet\u0103.<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Pierdere reversibil\u0103:<\/strong> Pierdere inducat\u0103 de c\u00e2mp sau pierdere termic\u0103 u\u0219oar\u0103 poate fi recuperat\u0103 prin re-magnetizare.<\/li>\n<li><strong>Pierdere ireversibil\u0103:<\/strong> Deterior\u0103ri structurale severe, oxidarea grani\u021bei de cristal sau schimb\u0103ri de faz\u0103 cauzate de \u00eenc\u0103lzire excesiv\u0103 vor reduce \u00een mod permanent capacitatea magnetic\u0103 a materialului.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Care este cea mai simpl\u0103 metod\u0103 DIY de demagnetizare a unui magnet acas\u0103?<\/h3>\n<p>\u00cen\u021belegerea <strong>modului \u00een care se demagnetizeaz\u0103 un magnet<\/strong> \u00een afara contextului de laborator vine \u00een esen\u021b\u0103 la c\u0103ldur\u0103 sau la c\u00e2mpuri magnetice alternative:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Expunere termic\u0103:<\/strong> \u00cenc\u0103lzirea magnetului peste temperatura sa maxim\u0103 de lucru folosind un pistol de \u00eenc\u0103lzire sau o tor\u021b\u0103 perturb\u0103 rapid ordinea domeniilor.<\/li>\n<li><strong>Expunere la c\u00e2mp AC:<\/strong> Trecerea unui obiect \u2014 cum ar fi un instrument magnetizat sau <a href=\"https:\/\/nbaem.com\/ro\/what-is-the-use-of-magnetic-bar\/\">bar\u0103 magnetic\u0103<\/a>printr-un \u0219terg\u0103tor comercial de mas\u0103 \u00een vrac sau l\u00e2ng\u0103 un transformator AC activ, apoi retragerea \u00eencet\u0103, dezorganiz\u00e2nd practic polaritatea.<\/li>\n<li><strong>Impact mecanic:<\/strong> Lovirea unui magnet cu coeziune mic\u0103 cu un ciocan poate reduce for\u021ba, dar magne\u021bii sinteriza\u021bi prea breaking vor ciocni probabil \u00eenainte de demagnetizare complet\u0103.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>\u00cenc\u0103lzirea unui magnet peste punctul Curie \u00eel stric\u0103 permanent?<\/h3>\n<p>Nu, \u00eenc\u0103lzirea dincolo de <strong>temperatura Curie<\/strong> \u00eendep\u0103rteaz\u0103 \u00eenc\u0103rcarea magnetic\u0103, dar nu stric\u0103 permanent materialul subiacente at\u00e2ta timp c\u00e2t se evit\u0103 oxidarea \u0219i deform\u0103rile structurale. Odat\u0103 ce aliajul se r\u0103ce\u0219te, revenin \u00een starea complet nemagnetizat\u0103. Poate fi apoi complet re-magnetizat folosind echipamente specializate. Pentru a evita pierderile termice nea\u0219teptate \u00een medii cu temperaturi ridicate, echipele de inginerie specific\u0103 adesea materiale cu cuvertur\u0103 mare (coercivitate \u00eenalt\u0103) precum temperaturile \u00eenalte <a href=\"https:\/\/nbaem.com\/gd\/what-are-the-grades-of-smco-magnets\/\">gradelemagnetilor SmCo<\/a>.<\/p>\n<h3>Cum demagnetizeaz\u0103 c\u00e2mpurile magnetice alternative obiectele f\u0103r\u0103 contact fizic?<\/h3>\n<p><strong>Degajare \u00een curent alternativ<\/strong> \u00eendep\u0103rteaz\u0103 \u00eenc\u0103rcarea magnetic\u0103 de la distan\u021b\u0103 prin ciclarea materialului printr-un proces de contractare <strong>buclele de isteresi<\/strong>:<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Schimb\u0103ri de polaritate:<\/strong> Degaserul genereaz\u0103 un c\u00e2mp magnetic alternativ care for\u021beaz\u0103 momentele dipolilor atomici s\u0103-\u0219i inverseze continuu orientarea.<\/li>\n<li><strong>Reducerea c\u00e2mpului:<\/strong> Pe m\u0103sur\u0103 ce muta\u021bi \u00eencet magnetul departe de bobin\u0103, intensitatea c\u00e2mpului experimentat\u0103 de magnet scade treptat.<\/li>\n<li><strong>Randomizarea domeniilor:<\/strong> Fiecare ciclu alternating las\u0103 grup\u0103ri mai mici de domenii blocate \u00een direc\u021bii opuse, conduc\u00e2nd reversibil net <strong>remanent\u0103 (Br)<\/strong> \u00eenapoi la zero f\u0103r\u0103 a atinge magnetul.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<div id=\"references\">\n<h2>Surse asociate<\/h2>\n<ul>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Magnet\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/en.wikipedia.org\/wiki\/Magnet<\/a><\/li>\n<li><a href=\"https:\/\/www.stanfordmagnets.com\/maximum-operating-temperature-vs-curie-temperature.html\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/www.stanfordmagnets.com\/maximum-operating-temperature-vs-curie-temperature.html<\/a><\/li>\n<li><a href=\"https:\/\/www.dextermag.com\/resources-old\/faq-magnetic-theory-design\/\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/www.dextermag.com\/resources-old\/faq-magnetic-theory-design\/<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Cum s\u0103 demagnetizezi un magnet cu metode sigure pas cu pas folosind c\u0103ldur\u0103, battedere \u0219i c\u00e2mpuri AC pentru ghiduri DIY \u0219i tehnice<\/p>","protected":false},"author":1,"featured_media":3972,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3973","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2026\/08\/Magnet_demagnetization_methods_2jG.webp","_links":{"self":[{"href":"https:\/\/nbaem.com\/ro\/wp-json\/wp\/v2\/posts\/3973","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/ro\/wp-json\/wp\/v2\/comments?post=3973"}],"version-history":[{"count":2,"href":"https:\/\/nbaem.com\/ro\/wp-json\/wp\/v2\/posts\/3973\/revisions"}],"predecessor-version":[{"id":3987,"href":"https:\/\/nbaem.com\/ro\/wp-json\/wp\/v2\/posts\/3973\/revisions\/3987"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/ro\/wp-json\/wp\/v2\/media\/3972"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/ro\/wp-json\/wp\/v2\/media?parent=3973"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/ro\/wp-json\/wp\/v2\/categories?post=3973"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/ro\/wp-json\/wp\/v2\/tags?post=3973"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}