{"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\/fr\/hv-hardness-metal-machined-parts\/","title":{"rendered":"HV Duret\u00e9 des pi\u00e8ces m\u00e9talliques usin\u00e9es"},"content":{"rendered":"<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">La duret\u00e9 HV est la duret\u00e9 Vickers, et HRC est la repr\u00e9sentation de la duret\u00e9 Rockwell. Leurs diff\u00e9rences se situent principalement au niveau du test de duret\u00e9, la forme de l'indentation \u00e9tant diff\u00e9rente.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt; font-family: tahoma, arial, helvetica, sans-serif;\"><strong>La conversion entre HV et Mpa<\/strong><\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Charge 49~980 N, le diamant conique avec un angle de 136 degr\u00e9s est press\u00e9 sur la surface du mat\u00e9riau, apr\u00e8s un temps de maintien, la longueur diagonale de l'indentation est mesur\u00e9e, puis la duret\u00e9 est calcul\u00e9e \u00e0 l'aide de la formule.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">La duret\u00e9 vickers a une faible charge d'essai, la charge d'essai \u00e9tant de 1,961~&lt;49,03N. Elle est applicable \u00e0 la mesure de la duret\u00e9 de pi\u00e8ces plus fines, de la surface d&#039;outils ou de rev\u00eatements.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Duret\u00e9 Vickers microscopique, charge d'essai n&lt;1,961N, applicable \u00e0 la feuille m\u00e9tallique, mesure de la duret\u00e9 de la couche superficielle extr\u00eamement fine.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">HV est adapt\u00e9 \u00e0 l'analyse microscopique, duret\u00e9 Vickers (HV), presser un c\u00f4ne carr\u00e9 en diamant avec un angle sup\u00e9rieur de 136 degr\u00e9s sur la surface du mat\u00e9riau avec une charge de 120 kg.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Pascal (Pa),1Pa=1N\/m<sup>2<\/sup>Le Pa \u00e9tant trop petit, il est souvent repr\u00e9sent\u00e9 par son unit\u00e9 multiple, le MPa, dans le domaine de l'ing\u00e9nierie. 1MPa=10<sup>6<\/sup>Pa, notre pays utilise couramment l'unit\u00e9 de pression non l\u00e9gale bar, millibar, la pression atmosph\u00e9rique standard, l'atmosph\u00e8re technique, la colonne de mercure millim\u00e9trique, etc.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">On parle g\u00e9n\u00e9ralement de pression atmosph\u00e9rique,<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">l'unit\u00e9 d'ing\u00e9nierie : 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 \u00e9quivaut \u00e0 10,2 pressions (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;\">Mesure HV\u00a0<\/span><\/strong><\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Le rev\u00eatement de diamant est une surface tr\u00e8s mince, HV peut \u00eatre mesur\u00e9, HRC et HRA ne sont pas applicables.La forme de la t\u00eate de HRC et HRA est un c\u00f4ne rond de 120 degr\u00e9s, et le sommet est une sph\u00e8re.La t\u00eate de HV est une pyramide \u00e0 quatre aigu\u00ebs avec quatre sph\u00e8res qui se croisent.Les m\u00e9thodes de mesure de deux types de duret\u00e9 sont jug\u00e9es par la profondeur de la mati\u00e8re press\u00e9e dans le mat\u00e9riau. Plus la pression est faible, plus la duret\u00e9 du mat\u00e9riau est \u00e9lev\u00e9e\u3002Cependant, en raison de la forme de la t\u00eate, HRC et HRA peuvent appliquer une force relativement importante pour enfoncer la t\u00eate dans le mat\u00e9riau (la pr\u00e9pression des deux m\u00e9thodes est de 10KG et la pression totale est respectivement de 60KG et 150KG). Pour les mat\u00e9riaux tr\u00e8s durs, les m\u00e9thodes HRC et\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Pour les mat\u00e9riaux pr\u00e9sentant de grandes diff\u00e9rences de duret\u00e9 superficielle et interne, la profondeur est trop importante et n'est pas non plus applicable.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">En raison de la pyramide pointue, HV ne peut pas \u00eatre limit\u00e9 \u00e0 la force, et peut \u00eatre s\u00e9lectionn\u00e9 en fonction de la profondeur de la surface du mat\u00e9riau comme une petite force.<\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Veuillez trouver ci-dessous le lien vers<strong> t\u00e9l\u00e9charger<\/strong><\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><a href=\"http:\/\/www.symachining.com\/fr\/resources\/\" target=\"_blank\"> la comparaison de la r\u00e9sistance \u00e0 la traction et du tableau de duret\u00e9 <\/a>.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>La duret\u00e9 HV est la duret\u00e9 Vickers, et la duret\u00e9 HRC est la repr\u00e9sentation de la duret\u00e9 Rockwell. Leurs diff\u00e9rences se situent principalement au niveau du test de duret\u00e9, la forme de l'indentation est diff\u00e9rente.   La conversion entre HV et Mpa charge 49~980 N, le diamant conique avec l'angle de 136 degr\u00e9s est press\u00e9 dans la surface du mat\u00e9riau, apr\u00e8s le temps de maintien, mesurer la [...]<\/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\/fr\/hv-hardness-metal-machined-parts\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\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\/fr\/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=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"susan@dgsym.com\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\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\":\"fr-FR\"},{\"@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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