{"id":21320,"date":"2025-07-03T07:27:14","date_gmt":"2025-07-03T07:27:14","guid":{"rendered":"https:\/\/bfymold.com\/?p=21320"},"modified":"2025-07-10T09:46:01","modified_gmt":"2025-07-10T09:46:01","slug":"spi-surface-finish-standards-for-injection-molds","status":"publish","type":"post","link":"https:\/\/bfymold.com\/es\/spi-surface-finish-standards-for-injection-molds\/","title":{"rendered":"Dominio de las normas de acabado superficial SPI para moldes de inyecci\u00f3n"},"content":{"rendered":"\n

Desmitificaci\u00f3n de las clases de acabado superficial SPI<\/h2>\n\n

Las normas SPI clasifican los acabados de los moldes<\/a> en cuatro categor\u00edas con valores precisos de rugosidad (Ra) y m\u00e9todos de procesamiento:<\/p>\n\n

<\/div>\n\n
\"SPI
SPI Acabado superficial<\/figcaption><\/figure>\n\n
<\/div>\n\n

SPI Clase A: Pulido Diamantado (Claridad \u00d3ptica)<\/h3>\n\n
Grado<\/td>Ra (\u00b5m)<\/td>M\u00e9todo<\/td>Aplicaciones<\/td><\/tr>
A-1<\/td>0.012-0.025<\/td>#3, pasta de diamante de grano 6000<\/td>Lentes m\u00e9dicas, gu\u00edas de luz<\/td><\/tr>
A-2<\/td>0.025-0.05<\/td>#6, pasta de diamante de grano 3000<\/td>Cubiertas transparentes, reflectores<\/td><\/tr>
A-3<\/td>0.05-0.10<\/td>#15, pasta de diamante de grano 1200<\/td>Componentes de la pantalla<\/td><\/tr><\/tbody><\/table><\/figure>\n\n
<\/div>\n\n

SPI Clase B: Pulido con papel de lija (semibrillante)<\/h3>\n\n
Grado<\/td>Ra (\u00b5m)<\/td>M\u00e9todo<\/td>Aplicaciones<\/td><\/tr>
B-1<\/td>0.05-0.10<\/td>Papel de lija de grano 600<\/td>Electr\u00f3nica de consumo<\/td><\/tr>
B-2<\/td>0.10-0.15<\/td>Papel de lija de grano 400<\/td>Envases cosm\u00e9ticos<\/td><\/tr>
B-3<\/td>0.28-0.32<\/td>Papel de lija de grano 320<\/td>Carcasas industriales<\/td><\/tr><\/tbody><\/table><\/figure>\n\n
<\/div>\n\n

SPI Clase C: Pulido de piedra (acabado mate)<\/h3>\n\n
Grado<\/td>Ra (\u00b5m)<\/td>M\u00e9todo<\/td>Aplicaciones<\/td><\/tr>
C-1<\/td>0.35-0.40<\/td>Piedra de grano 600<\/td>Interiores de autom\u00f3viles<\/td><\/tr>
C-2<\/td>0.45-0.55<\/td>Piedra de grano 400<\/td>Empu\u00f1aduras<\/td><\/tr>
C-3<\/td>0.63-0.70<\/td>Piedra de grano 320<\/td>Ocultar las marcas del fregadero<\/td><\/tr><\/tbody><\/table><\/figure>\n\n
<\/div>\n\n

SPI Clase D: Granallado (superficies texturadas)<\/h3>\n\n
Grado<\/td>Ra (\u00b5m)<\/td>M\u00e9todo<\/td>Aplicaciones<\/td><\/tr>
D-1<\/td>0.80-1.00<\/td>#11 cuentas de vidrio<\/td>Superficies resistentes a los ara\u00f1azos<\/td><\/tr>
D-2<\/td>1.00-2.80<\/td>#240 \u00f3xido de aluminio<\/td>Herramientas antideslizantes<\/td><\/tr>
D-3<\/td>3.20-18<\/td>#24 \u00f3xido de aluminio<\/td>Maquinaria pesada<\/td><\/tr><\/tbody><\/table><\/figure>\n\n
<\/div>\n\n

Comparaci\u00f3n entre SPI y VDI 3400<\/h2>\n\n
Par\u00e1metro<\/td>Norma SPI<\/td>Equivalente de VDI 3400<\/td><\/tr>
Acabado \u00f3ptico<\/td>A-1 (0.012\u00b5m)<\/td>VDI 0 (0.025\u00b5m)<\/td><\/tr>
Semibrillante<\/td>B-1 (0.05\u00b5m)<\/td>VDI 12 (0.15\u00b5m)<\/td><\/tr>
Textura mate<\/td>C-2 (0.50\u00b5m)<\/td>VDI 25 (1.0\u00b5m)<\/td><\/tr>
Textura gruesa<\/td>D-3 (12.5\u00b5m)<\/td>VDI 40 (18\u00b5m)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n
<\/div>\n\n
\"acabado
Acabado superficial SPI ( Fuente de la imagen: Protolabs )<\/figcaption><\/figure>\n\n
<\/div>\n\n

Aplicaciones espec\u00edficas del sector<\/h2>\n\n
<\/div>\n\n

Productos sanitarios<\/h3>\n\n
Requisito<\/td>Soluci\u00f3n SPI<\/td>Beneficio<\/td><\/tr>
Resistencia bacteriana<\/td>A-1 (Ra 0.025\u00b5m)<\/td>100% de aprobados en las pruebas de limpieza de la FDA<\/td><\/tr>
Superficies autoclavables<\/td>B-1 + pasivaci\u00f3n<\/td>M\u00e1s de 500 ciclos de esterilizaci\u00f3n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n
<\/div>\n\n

Electr\u00f3nica de consumo<\/h3>\n\n
Requisito<\/td>Soluci\u00f3n SPI<\/td>Beneficio<\/td><\/tr>
Biseles sin ara\u00f1azos<\/td>A-3 + revestimiento duro<\/td>Dureza de l\u00e1piz 5H<\/td><\/tr>
Resistencia a las huellas dactilares<\/td>Textura D-1<\/td>70% menos de manchas visibles<\/td><\/tr><\/tbody><\/table><\/figure>\n\n
<\/div>\n\n

Proceso de precisi\u00f3n de BFY Mold<\/h2>\n\n
    \n
  1. Escaneado l\u00e1ser: Detecci\u00f3n de desviaciones >0,005 mm<\/li>\n\n\n\n
  2. Pulido robotizado: consistencia de \u00b10,01 \u00b5m Ra<\/li>\n\n\n\n
  3. Validaci\u00f3n 3D: Cartograf\u00eda de superficies por pieza<\/li>\n\n\n\n
  4. Mantenimiento electroqu\u00edmico: Restauraci\u00f3n de texturas desgastadas<\/li>\n<\/ol>\n\n
    <\/div>\n\n

    8 preguntas esenciales sobre el acabado superficial SPI<\/h2>\n\n
      \n
    1. \u00bfQu\u00e9 grado de SPI oculta mejor las marcas de hundimiento?SPI C-2 (Ra 0,45-0,55\u00b5m) enmascara marcas de hundimiento en pol\u00edmeros rellenos de vidrio.<\/li>\n<\/ol>\n\n
        \n
      1. \u00bfC\u00f3mo reduce SPI A-2 el rechazo de piezas?Reduce las l\u00edneas de flujo en un 60% frente a los moldes sin pulir.<\/li>\n<\/ol>\n\n
          \n
        1. \u00bfCu\u00e1l es el plazo de entrega del texturizado SPI D-2?7-10 d\u00edas para moldes est\u00e1ndar en BFY Mold.<\/li>\n<\/ol>\n\n
            \n
          1. \u00bfPueden soportar los acabados SPI el nailon relleno de vidrio?Utilice SPI B-2 como m\u00ednimo; evite la Clase A para materiales abrasivos.<\/li>\n<\/ol>\n\n
              \n
            1. \u00bfC\u00f3mo especificar SPI en los planos de moldes?Anotar: \u00abACABADO: SPI B-1 SEG\u00daN SPI STD-123\u00bb.<\/li>\n<\/ol>\n\n
                \n
              1. \u00bfMejora SPI D-3 la adherencia de la pintura?S\u00ed: 5 veces m\u00e1s fuerte que las superficies pulidas (ASTM D4541).<\/li>\n<\/ol>\n\n
                  \n
                1. \u00bfDiferencia de coste entre SPI A-1 y B-1?A-1 a\u00f1ade un 25-40% debido al pulido manual.<\/li>\n<\/ol>\n\n
                    \n
                  1. \u00bfRestauraci\u00f3n de acabados SPI desgastados?El texturizado electroqu\u00edmico recupera el 95% del Ra original.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

                    Desmitificaci\u00f3n de las clases de acabado superficial SPI Las normas SPI clasifican los acabados de los moldes en cuatro categor\u00edas con valores precisos de rugosidad (Ra) y m\u00e9todos de procesamiento: SPI Clase A: Pulido Diamantado (Claridad \u00d3ptica) Grado Ra (\u00b5m) M\u00e9todo Aplicaciones A-1 0.012-0.025 #3, pasta de diamante de grano 6000 Lentes m\u00e9dicas, gu\u00edas de […]<\/p>\n","protected":false},"author":1,"featured_media":21258,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","ast-disable-related-posts":"","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":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[53],"tags":[],"class_list":["post-21320","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/bfymold.com\/es\/wp-json\/wp\/v2\/posts\/21320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bfymold.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bfymold.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bfymold.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bfymold.com\/es\/wp-json\/wp\/v2\/comments?post=21320"}],"version-history":[{"count":0,"href":"https:\/\/bfymold.com\/es\/wp-json\/wp\/v2\/posts\/21320\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bfymold.com\/es\/wp-json\/wp\/v2\/media\/21258"}],"wp:attachment":[{"href":"https:\/\/bfymold.com\/es\/wp-json\/wp\/v2\/media?parent=21320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bfymold.com\/es\/wp-json\/wp\/v2\/categories?post=21320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bfymold.com\/es\/wp-json\/wp\/v2\/tags?post=21320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}