Discurile abrazive din carbur\u0103 de siliciu sunt o alegere ideal\u0103 pentru \u0219lefuirea materialelor cu rezisten\u021b\u0103 sc\u0103zut\u0103 la trac\u021biune, cum ar fi metalele \u0219i nemetalicele, dar pot fi mai dificil de controlat dec\u00e2t abrazivele din oxid de aluminiu, datorit\u0103 granulelor ascu\u021bite care taie cu u\u0219urin\u021b\u0103 sticla, plasticul \u0219i pl\u0103cile din fibr\u0103 de densitate medie, dar nu pot t\u0103ia materiale mai dure, cum ar fi metalul sau lemnul tare.<\/p>\n
Carbura de siliciu, care m\u0103soar\u0103 9,5 pe scara de duritate Mohs, este una dintre cele mai dure granule abrazive comune \u0219i o alegere ideal\u0103 pentru \u0219lefuirea sau lustruirea materialelor dure datorit\u0103 marginilor sale ascu\u021bite \u0219i naturii friabile. Datorit\u0103 duratei sale lungi de via\u021b\u0103 \u0219i posibilit\u0103\u021bii de reciclare, acest material func\u021bioneaz\u0103 deosebit de bine pe metale precum titanul, o\u021belul inoxidabil, aluminiul blindat, dar poate \u00eent\u00e2mpina dificult\u0103\u021bi atunci c\u00e2nd lucreaz\u0103 cu suprafe\u021be mai delicate precum sticla \u0219i marmura.<\/p>\n
Al\u021bi abrazivi, cum ar fi oxidul de aluminiu sau cBN, nu ofer\u0103 performan\u021be de t\u0103iere la fel de durabile sau longevitate; lipsa lor de rezisten\u021b\u0103 la fractur\u0103 face din zirconiu alegerea superioar\u0103 atunci c\u00e2nd se \u0219lefuie\u0219te prin materiale mai dure, cum ar fi o\u021belul c\u0103lit; natura sa durabil\u0103 \u00eel face, de asemenea, op\u021biunea optim\u0103 atunci c\u00e2nd se ocup\u0103 de aluminiu, fier \u0219i materiale din bronz moale. Prima liter\u0103 din specifica\u021biile fiec\u0103rei discuri indic\u0103, de obicei, ce tip de granula\u021bie con\u021bine: A reprezint\u0103 abrazivi din oxid de aluminiu, cum ar fi oxidul de aluminiu; B se refer\u0103 la cBN; C arat\u0103 carbura de siliciu, \u00een timp ce Z semnific\u0103 abrazivi din zirconiu - fiecare produc\u0103tor va oferi liste diferite pe baza listelor produc\u0103torilor; totu\u0219i<\/p>\n
Dimensiunea granulelor se refer\u0103 la dimensiunea \u0219i puterea de aderen\u021b\u0103 a particulelor abrazive individuale legate \u00eempreun\u0103, particulele mai mari av\u00e2nd o granularitate mai mare \u0219i, prin urmare, fiind mai potrivite pentru \u0219lefuirea dur\u0103 a materialelor moi, \u00een timp ce particulele mai mici tind s\u0103 taie mai repede, av\u00e2nd o ascu\u021bime \u0219i o vitez\u0103 de t\u0103iere mai mari. Leg\u0103turile de aderen\u021b\u0103 men\u021bin aceste particule \u00een siguran\u021b\u0103 \u00een ro\u021bile lor - leg\u0103turile vitrificate sau rezinoide fiind utilizate \u00een mod obi\u0219nuit cu ro\u021bile abrazive.<\/p>\n
Abrazivii Sol Gel Alpha Alumina au fost \u00een trecut dificil de utilizat cu ro\u021bile acoperite cu alumin\u0103 din cauza leg\u0103turilor de fixare \u00een col\u021buri care con\u021bin alumin\u0103 \u0219i care reac\u021bioneaz\u0103 cu granula\u021bia acesteia, oxid\u00e2nd-o \u0219i duc\u00e2nd la contrac\u021bia excesiv\u0103 a structurilor ro\u021bilor. Un nou liant f\u0103r\u0103 alumin\u0103, astfel cum este prezentat \u00een prezentul document, ofer\u0103 o rezisten\u021b\u0103 mecanic\u0103 \u0219i o rezisten\u021b\u0103 la pierderea formei \u00eembun\u0103t\u0103\u021bite, oferind o metod\u0103 mai u\u0219oar\u0103 de \u0219lefuire a metalelor \u0219i a materialelor dure dec\u00e2t materialele de leg\u0103tur\u0103 tradi\u021bionale care con\u021bin alumin\u0103, cum ar fi Kentucky Ball Clay nr. 6, Nepheline Syenite sau Flint; aceste lian\u021bi pot fi, de asemenea, ar\u0219i la temperaturi mai sc\u0103zute, astfel \u00eenc\u00e2t s\u0103 se evite reac\u021bia cu abrazivul s\u0103u.<\/p>\n
Leg\u0103tura se refer\u0103 la rezisten\u021ba materialelor care \u021bin \u00eempreun\u0103 granulele abrazive pe o roat\u0103, iar diferite tipuri de leg\u0103turi sunt utilizate pentru a crea diferite ro\u021bi abrazive care func\u021bioneaz\u0103 cel mai bine pentru anumite materiale sau aplica\u021bii.<\/p>\n
Oxidul de aluminiu, cunoscut \u0219i sub denumirea de corindon, este un abraziv aglomerat popular utilizat pentru \u0219lefuirea metalelor feroase \u0219i a materialelor neferoase, cum ar fi ceramica. \u00cen plus, aceast\u0103 substan\u021b\u0103 poate fi adesea g\u0103sit\u0103 la ascu\u021birea uneltelor din carbur\u0103.<\/p>\n
Carbura de siliciu verde, un material mai dur \u0219i mai fragil dec\u00e2t corindonul, este adesea utilizat\u0103 \u00een v\u00e2rfurile \u0219i ro\u021bile cu liant vitrificat pentru \u0219lefuirea metalelor neferoase cu rezisten\u021b\u0103 sc\u0103zut\u0103 la trac\u021biune, cum ar fi carbura cimentat\u0103, precum \u0219i a materialelor dure fragile, cum ar fi carbura cimentat\u0103.<\/p>\n
Un material abraziv este modelat \u00een forma dorit\u0103 printr-un proces special de \u0219lefuire \u0219i este fixat cu ajutorul r\u0103\u0219inii sau al leg\u0103turilor vitrificate. \u00cen func\u021bie de granula\u021bie \u0219i de rezisten\u021ba\/rigiditatea leg\u0103turii, un material abraziv este clasificat ca dur sau moale; \u00een general, materialele dure sunt mai eficiente pe materiale dure, \u00een timp ce materialele moi sunt mai eficiente \u00eempotriva substan\u021belor moi.<\/p>\n
Porozitatea unei ro\u021bi inventive este o component\u0103 integrant\u0103 a performan\u021bei sale, dup\u0103 cum reiese din testul de \u0219lefuire pe plachete de siliciu gravate: for\u021be normale maxime stabile pe parcursul a dou\u0103 sute de cicluri de \u0219lefuire a plachetelor, minimiz\u00e2nd \u00een acela\u0219i timp deteriorarea termic\u0103 \u0219i mecanic\u0103 a piesei de prelucrat.<\/p>\n
Spre deosebire de ro\u021bile conven\u021bionale lipite cu r\u0103\u0219in\u0103, o roat\u0103 inventat\u0103 a prezentat caracteristici de \u0219lefuire extrem de favorabile pentru \u0219lefuirea \u00eenapoi a plachetelor gravate pentru a produce finisaje fine cu for\u021be normale de v\u00e2rf relativ constante \u0219i f\u0103r\u0103 cre\u0219teri bru\u0219te. \u00cen contrast cu aceste rezultate, o roat\u0103 comparativ\u0103 conven\u021bional\u0103 legat\u0103 cu r\u0103\u0219in\u0103 a produs o cre\u0219tere inacceptabil de rapid\u0103 a for\u021bei normale de v\u00e2rf care a f\u0103cut-o inutilizabil\u0103. \u00cen schimb, \u00een timpul aceluia\u0219i experiment, roata comparativ\u0103 conven\u021bional\u0103 a produs cre\u0219teri continue \u0219i rapide ale for\u021bei normale de v\u00e2rf care le-au f\u0103cut inutilizabile; \u00een schimb, \u00een timpul aceluia\u0219i experiment, \u00een timp ce \u00een compara\u021bie, ro\u021bile comparative conven\u021bionale au prezentat cre\u0219teri continue \u0219i rapide ale for\u021bei normale de v\u00e2rf care le-au f\u0103cut \u00een cele din urm\u0103 inutilizabile; \u00een schimb, \u00een compara\u021bie, \u00een timpul aceluia\u0219i experiment, roata inventat\u0103 a produs caracteristici de rectificare extrem de dezirabile care au produs un fond de finisare fin, av\u00e2nd \u00een acela\u0219i timp cre\u0219teri sc\u0103zute \u0219i constante ale for\u021bei normale de v\u00e2rf.<\/p>\n
Aceast\u0103 roat\u0103 abraziv\u0103 are granule verzi de carbur\u0103 de siliciu cu granula\u021bia de 60 \u0219i un liant vitros alc\u0103tuit din materii prime precum argila cu bile Kentucky nr. 6, sienit nefelinic, silex \u0219i fritt\u0103 de sticl\u0103. \u00cen mod ideal, temperatura maxim\u0103 de ardere nu ar trebui s\u0103 dep\u0103\u0219easc\u0103 1100deg C; volumul porilor poate fi controlat folosind sfere ceramice goale care reac\u021bioneaz\u0103 preferen\u021bial cu componentele sale, protej\u00e2nd \u00een acela\u0219i timp granulele de carbur\u0103 de siliciu de oxidare \u00een timpul arderii.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide abrasive wheels are an ideal choice for grinding low tensile strength materials like metals and nonmetallics, yet can […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[3],"tags":[],"class_list":["post-68","post","type-post","status-publish","format-standard","hentry","category-sic-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbideceramic.net\/ro\/wp-json\/wp\/v2\/posts\/68","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbideceramic.net\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbideceramic.net\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/ro\/wp-json\/wp\/v2\/comments?post=68"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbideceramic.net\/ro\/wp-json\/wp\/v2\/posts\/68\/revisions"}],"predecessor-version":[{"id":69,"href":"https:\/\/siliconcarbideceramic.net\/ro\/wp-json\/wp\/v2\/posts\/68\/revisions\/69"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/ro\/wp-json\/wp\/v2\/media?parent=68"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/ro\/wp-json\/wp\/v2\/categories?post=68"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/ro\/wp-json\/wp\/v2\/tags?post=68"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}