{"id":1315,"date":"2017-10-09T19:08:20","date_gmt":"2017-10-09T11:08:20","guid":{"rendered":"https:\/\/www.symachining.com\/?p=1076"},"modified":"2017-10-09T19:08:20","modified_gmt":"2017-10-09T11:08:20","slug":"hv-hardness-metal-machined-parts","status":"publish","type":"post","link":"https:\/\/www.symachining.com\/it\/hv-hardness-metal-machined-parts\/","title":{"rendered":"HV Durezza delle parti lavorate in metallo"},"content":{"rendered":"<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">La durezza HV \u00e8 la durezza di Vickers, mentre HRC \u00e8 la rappresentazione della durezza di Rockwell. Le loro differenze sono principalmente nel test di durezza, la forma dell'indentazione \u00e8 diversa.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt; font-family: tahoma, arial, helvetica, sans-serif;\"><strong>La conversione tra HV e Mpa<\/strong><\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Carico 49~980 N, il diamante conico con l'angolo di 136 gradi viene premuto sulla superficie del materiale, dopo aver mantenuto il tempo, misurare la lunghezza diagonale della rientranza, quindi calcolare la durezza dalla formula. \u00e8 adatto per la determinazione della durezza del pezzo pi\u00f9 grande e dello strato profondo.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">La durezza di Vickers ha un piccolo carico di prova, carico di prova 1.961~&lt;49.03N.\u00c8 applicabile al pezzo pi\u00f9 sottile, alla superficie dell&#039;utensile o alla misura della durezza del rivestimento.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Durezza Vickers al microscopio, carico di prova n&lt;1.961N, applicabile alla lamina metallica, misurazione della durezza dello strato superficiale estremamente sottile.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">HV \u00e8 adatto per l'analisi microscopica, la durezza di Vickers (HV), stampa il cono quadrato del diamante con l'angolo superiore di 136 gradi nella superficie del materiale all'interno di 120kg load.The superficie della fossa di indentazione \u00e8 divisa per il valore del carico, \u00e8 il valore di durezza di Vickers.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Pascal (Pa), 1Pa=1N\/m<sup>2<\/sup>Poich\u00e9 il Pa \u00e8 troppo piccolo, in ingegneria viene spesso rappresentato con l'unit\u00e0 multipla MPa (MPa).1MPa=10<sup>6<\/sup>Pa, il nostro Paese usa comunemente l'unit\u00e0 di pressione non legale bar, millibar, pressione atmosferica standard, atmosfera ingegneristica, colonna di mercurio millimetrica e cos\u00ec via.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">La pressione atmosferica si dice di solito,<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">l'unit\u00e0 ingegneristica: Kgf\/CM \u00a0<sup>2<\/sup>, \u00a0<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><span style=\"font-size: 14pt;\">1\u00a0<\/span>MPa equivale a 10,2 pressioni (Kgf\/cm)<sup>2<\/sup>)<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Misura HV\u00a0<\/span><\/strong><\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">La forma della testa di HRC e HRA \u00e8 un cono rotondo di 120 gradi e la parte superiore \u00e8 una sfera. La testa di HV \u00e8 una piramide affilata con quattro sfere che si intersecano. I metodi di misurazione dei due tipi di durezza sono valutati in base alla profondit\u00e0 del materiale premuto nel materiale. Pi\u00f9 la pressione \u00e8 superficiale, maggiore \u00e8 la durezza del materiale\u3002 Tuttavia, a causa della forma della testa, HRC e HRA possono applicare una forza relativamente grande per premere la testa nel materiale (la pre-pressione di entrambi i metodi \u00e8 di 10KG e la pressione totale \u00e8 rispettivamente di 60KG e 150KG). Per materiali molto duri, HRC e\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">L'HRA esiste sulla superficie sferica dell'estremit\u00e0 anteriore, la profondit\u00e0 \u00e8 troppo bassa per essere risolta con precisione. Per il materiale con grandi differenze di superficie e durezza interna, la profondit\u00e0 \u00e8 troppo alta e non \u00e8 applicabile.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">A causa della piramide appuntita, l'HV non pu\u00f2 essere limitato alla forza e pu\u00f2 essere selezionato in base alla profondit\u00e0 della superficie del materiale come piccola forza. \u00c8 anche possibile ottenere valori di durezza accurati per materiali estremamente duri e strati sottili.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Di seguito il link per<strong> scaricare<\/strong><\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><a href=\"http:\/\/www.symachining.com\/it\/resources\/\" target=\"_blank\"> il confronto tra la resistenza alla trazione e la tabella di durezza <\/a>.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>La durezza HV \u00e8 la durezza di Vickers e HRC \u00e8 la rappresentazione della durezza di Rockwell. Le loro differenze sono principalmente nella prova di durezza, la forma dell'indentazione \u00e8 diversa.   La conversione tra HV e Mpa Carica 49~980 N, il diamante conico con l'angolo di 136 gradi viene premuto sulla superficie del materiale, dopo aver mantenuto il tempo, misura [...]<\/p>","protected":false},"author":2,"featured_media":1077,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[15],"class_list":["post-1315","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-care-about-hardness","tag-machining-project"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>HV Hardness of metal machined parts - SYM Precision Machining Manufacturer China<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.symachining.com\/it\/hv-hardness-metal-machined-parts\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"HV Hardness of metal machined parts - SYM Precision Machining Manufacturer China\" \/>\n<meta property=\"og:description\" content=\"HV Hardness is the vickers hardness, and HRC is the representation of rockwell hardness.Their differences are mainly in the hardness test, the indentation shape is different. &nbsp; The conversion between HV and Mpa Load 49~980 N,The conical diamond with the Angle of 136 degrees is pressed into the surface of the material,After keeping time,Measure the [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.symachining.com\/it\/hv-hardness-metal-machined-parts\/\" \/>\n<meta property=\"og:site_name\" content=\"SYM Precision Machining Manufacturer China\" \/>\n<meta property=\"article:published_time\" content=\"2017-10-09T11:08:20+00:00\" \/>\n<meta name=\"author\" content=\"susan@dgsym.com\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Scritto da\" \/>\n\t<meta name=\"twitter:data1\" content=\"susan@dgsym.com\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo di lettura stimato\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.symachining.com\/hv-hardness-metal-machined-parts\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.symachining.com\/hv-hardness-metal-machined-parts\/\"},\"author\":{\"name\":\"susan@dgsym.com\",\"@id\":\"https:\/\/www.symachining.com\/#\/schema\/person\/f948b2efca41ad5dbaba72a5f4b9ae05\"},\"headline\":\"HV Hardness of metal machined parts\",\"datePublished\":\"2017-10-09T11:08:20+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.symachining.com\/hv-hardness-metal-machined-parts\/\"},\"wordCount\":464,\"publisher\":{\"@id\":\"https:\/\/www.symachining.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.symachining.com\/hv-hardness-metal-machined-parts\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.symachining.com\/wp-content\/uploads\/2025\/01\/SYM-Machining-Factory-Equipments-18.jpg\",\"keywords\":[\"machining project\"],\"articleSection\":[\"Heat Treatment\"],\"inLanguage\":\"it-IT\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.symachining.com\/hv-hardness-metal-machined-parts\/\",\"url\":\"https:\/\/www.symachining.com\/hv-hardness-metal-machined-parts\/\",\"name\":\"HV Hardness of metal machined parts - 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