{"id":22343,"date":"2024-07-30T12:01:56","date_gmt":"2024-07-30T04:01:56","guid":{"rendered":"https:\/\/firstmold.com\/?post_type=case-study&#038;p=22343"},"modified":"2025-07-24T11:08:38","modified_gmt":"2025-07-24T03:08:38","slug":"engine-valve-cover-manufacturing","status":"publish","type":"case-study","link":"https:\/\/firstmold.com\/it\/case-study\/engine-valve-cover-manufacturing\/","title":{"rendered":"Produzione del coperchio della valvola del motore mediante processo di pressofusione"},"content":{"rendered":"<p>Un cliente del settore automobilistico messicano si \u00e8 rivolto a First Mold per la produzione di una serie di coperchi delle valvole del motore. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-requirements-for-engine-valve-covers-manufacturing\">Requisiti per la produzione di coprivalvole per motori<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Materiale<\/strong>: Lega di alluminio leggera ma resistente (AlSi10Mg) per ridurre il peso del veicolo e migliorare l'efficienza dei consumi.<\/li>\n\n\n\n<li><strong>Finitura superficiale<\/strong>: Superficie liscia e resistente alla corrosione con una tolleranza di \u00b10,1 mm.<\/li>\n\n\n\n<li><strong>Volume di produzione<\/strong>: 50.000 unit\u00e0 all'anno.<\/li>\n\n\n\n<li><strong>Efficienza dei costi<\/strong>: Prezzi competitivi pur mantenendo un'elevata qualit\u00e0.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-engine-valve-covers-manufacturing-process\">Processo di produzione dei coprivalvola motore<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-design-review-and-tooling-development\">Revisione della progettazione e sviluppo degli strumenti<\/h3>\n\n\n\n<p>Dopo aver ricevuto il progetto da questo cliente, il team di ingegneri di First Mold ha condotto un'accurata analisi del progetto. <a href=\"https:\/\/firstmold.com\/it\/guides\/dfm\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>revisione del progetto<\/strong><\/a> per garantire la producibilit\u00e0. Il team ha identificato potenziali problemi come le sezioni sottili delle pareti e le geometrie complesse, che potrebbero portare a difetti di fusione. \u00c8 stato progettato uno stampo personalizzato, che incorpora caratteristiche come l'ottimizzazione della <a href=\"https:\/\/firstmold.com\/it\/guides\/injection-molding-gate\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>sistemi di chiusura e sfiato<\/strong><\/a> per migliorare il flusso di materiale e ridurre la porosit\u00e0.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-die-casting-process\">Processo di pressofusione<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Preparazione degli stampi<\/strong>: Lo stampo \u00e8 stato preriscaldato a 200\u00b0C per evitare shock termici e garantire un flusso uniforme del materiale.<\/li>\n\n\n\n<li><strong>Colata<\/strong>: La lega di alluminio fuso \u00e8 stata iniettata nel <a href=\"https:\/\/firstmold.com\/it\/guides\/mold-cavity-and-mold-core\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>cavit\u00e0 dello stampo<\/strong><\/a> ad una pressione di 1.500 bar<\/li>\n\n\n\n<li><strong>Raffreddamento ed espulsione<\/strong>: Il pezzo \u00e8 stato raffreddato e solidificato entro 30 secondi, seguito dall'espulsione automatica dallo stampo.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-finishing-and-quality-control\">Finitura e controllo qualit\u00e0<\/h3>\n\n\n\n<p>Dopo la fusione, i coperchi delle valvole sono stati sottoposti a una serie di processi di finitura, tra cui rifilatura, granigliatura e lavorazione. Per migliorare la resistenza alla corrosione e l'estetica \u00e8 stato applicato un rivestimento in polvere di alta qualit\u00e0.<\/p>\n\n\n\n<p>Il primo Mold ha impiegato una rigorosa <a href=\"https:\/\/firstmold.com\/it\/quality-control\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>misure di controllo della qualit\u00e0<\/strong><\/a>, compresa l'ispezione dimensionale con macchine di misura a coordinate (CMM) e l'ispezione a raggi X per rilevare i difetti interni.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-challenges-and-solutions-in-engine-valve-cover-manufacturing\">Sfide e soluzioni nella produzione dei coperchi delle valvole del motore<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-porosity-issues\">Problemi di porosit\u00e0<\/h3>\n\n\n\n<p><strong>Problema<\/strong>: Durante la fase iniziale di produzione, alcuni coperchi delle valvole presentavano porosit\u00e0, un comune difetto di pressofusione caratterizzato dalla presenza di piccoli vuoti o sacche di gas all'interno del metallo. Questo difetto comprometteva l'integrit\u00e0 strutturale dei pezzi.<\/p>\n\n\n\n<p><strong>Soluzione<\/strong>: Il team di ingegneri ha implementato una tecnica di pressofusione assistita dal vuoto, che ha ridotto in modo significativo l'intrappolamento dell'aria e ha garantito una colata densa e priva di difetti.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-warpage\">Curvatura<\/h3>\n\n\n\n<p><strong>Problema<\/strong>: Il design complesso ha provocato una piccola deformazione durante il raffreddamento, che ha influito sulla planarit\u00e0 del pezzo. La deformazione \u00e8 un problema comune nella pressofusione, causato da velocit\u00e0 di raffreddamento non uniformi o da tensioni all'interno del materiale.<\/p>\n\n\n\n<p><strong>Soluzione<\/strong>: Ottimizzando la velocit\u00e0 di raffreddamento e riprogettando i canali di raffreddamento all'interno dello stampo, First Mold ha ottenuto un raffreddamento uniforme, riducendo al minimo la deformazione e garantendo la precisione dimensionale.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-results\">Risultati<\/h2>\n\n\n\n<p>First Mold ha prodotto con successo 9000 unit\u00e0 di coprivalvole per motori di alta qualit\u00e0 per questo cliente, che ci ha espresso grandi apprezzamenti.<\/p>","protected":false},"excerpt":{"rendered":"<p>First Mold eccelle nella produzione di coperchi valvole motore di alta qualit\u00e0, superando le sfide e fornendo pezzi precisi ed efficienti dal punto di vista dei 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