{"id":4094,"date":"2026-04-04T17:07:14","date_gmt":"2026-04-04T10:07:14","guid":{"rendered":"https:\/\/cokhitienphat.com\/?p=4094"},"modified":"2026-04-06T14:27:41","modified_gmt":"2026-04-06T07:27:41","slug":"case-study-operational-secrets-to-prevent-die-breakage-in-micro-pellet-extrusion","status":"publish","type":"post","link":"https:\/\/cokhitienphat.com\/en\/2026\/04\/04\/case-study-operational-secrets-to-prevent-die-breakage-in-micro-pellet-extrusion\/","title":{"rendered":"Case Study: Operational Secrets to Prevent Die Breakage in Micro-Pellet Extrusion"},"content":{"rendered":"\n<p>In the specialized field of aquafeed production, changing to small die sizes (micro-pellet) from 0.5 &#8211; 1.5mm, presents significant technical challenges. A minor oversight in operational protocol can lead to die failure, increasing spare part expenditures and causing expensive production downtime.<\/p>\n\n\n\n<p>Base on a real-world technical support case handled by <strong>Tien Phat Mechanical,<\/strong> we have performed a Root Cause Analysis (RCA) to identify why dies break during small-size production and how to prevent it.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-02.webp\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-02.webp\" alt=\"Khu\u00f4n \u00c9p \u0110\u00f9n (Extrusion Die)\" class=\"wp-image-4050\" srcset=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-02.webp 800w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-02-300x225.webp 300w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-02-768x576.webp 768w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-02-600x450.webp 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><figcaption class=\"wp-element-caption\">Khu\u00f4n \u00c9p \u0110\u00f9n (Extrusion Die)<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-case-analysis\"><strong>Case Analysis<\/strong><\/h2>\n\n\n\n<p>Our customer reported the consecutive breakage of two extrusion dies (1.2mm and 1.5mm) along with damage to the knife head. Our diagnostic investigation revealed the following operational parameters:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Be-Khuon-Ep-Dun.webp\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Be-Khuon-Ep-Dun.webp\" alt=\"\" class=\"wp-image-4046\" srcset=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Be-Khuon-Ep-Dun.webp 800w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Be-Khuon-Ep-Dun-300x225.webp 300w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Be-Khuon-Ep-Dun-768x576.webp 768w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Be-Khuon-Ep-Dun-600x450.webp 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Production Sequence:<\/strong> The operator changed from a 3.0mm die to a 1.2mm die immediately.<\/li>\n\n\n\n<li><strong>Pulverizer Configuration:<\/strong> The pulverizer was using a 0.8mm mesh.<\/li>\n\n\n\n<li><strong>Material Fineness:<\/strong> Sieve analysis showed that 95% passed through 0.5mm and 100% passed through 1.0mm.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-technical-root-causes-of-die-failure\"><strong>Technical Root Causes of Die Failure<\/strong><\/h2>\n\n\n\n<p>Through technical evaluation, our engineering team identified some critical errors that led to the die failure:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Residual Materials:<\/strong> Residual materials for production of pellet with 3.0mm size left in the pipelines or storage tanks from the previous run act as &#8220;plugs&#8221;. When these coarse particle hit the 1.2mm die holes, they cause instant blockages, triggering a rapid rise in chamber pressure.<\/li>\n\n\n\n<li><strong>Violation of the &#8220;One-Third Rule&#8221;:<\/strong> In extrusion technology, a fundamental rule of thumb is that the maximum particle size of the raw material must not exceed 1\/3 of the die hole diameter. For a 1.2mm die, the material should be ground to 0.4mm or finer. The customer&#8217;s material contained particles up to 1.0mm. These oversize particles cause bridging at the die entrance, leading to localized pressure concentrations that exceed the mechanical limits of the steel.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-05.webp\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-05.webp\" alt=\"Khu\u00f4n \u00c9p \u0110\u00f9n (Extrusion Die)\" class=\"wp-image-4056\" srcset=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-05.webp 800w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-05-300x225.webp 300w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-05-768x576.webp 768w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-05-600x450.webp 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><figcaption class=\"wp-element-caption\">Khu\u00f4n \u00c9p \u0110\u00f9n (Extrusion Die)<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-professional-recommendations-for-safe-operation\"><strong>Professional Recommendations for Safe Operation<\/strong><\/h2>\n\n\n\n<p><strong>Tien Phat Mechanical<\/strong> recommends the following rules for operation:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u200b<strong>Mandatory Deep Cleaning:<\/strong> When changing the production from large pellet sizes to small pellet sizes, a deep system cleaning is mandatory. Pipelines, conditioners, and storage tanks must be cleared of all residual coarse material to prevent immediate hole blockage.<\/li>\n\n\n\n<li><strong>Descending Order Production:<\/strong> To protect equipment, arrange the production schedule in a descending order of sizes: 3.0mm &#8211; 2.5mm &#8211; 2.0mm &#8211; 1.5mm &#8211; 1.2mm. This allows the extruder components (screw, sleeve, and die,&#8230;) to adapt gradually to the increasing pressure gradients, minimizing mechanical stress.<\/li>\n\n\n\n<li><strong>Enhance the Fineness of the Raw Materials: <\/strong>Apply the &#8220;One-Third Rule&#8221; to select the appropriate ultra-fine pulverizer mesh for the required feed pellet size.<\/li>\n\n\n\n<li><strong>Dedicated Production Lines: <\/strong>\u200bFor high-capacity facilities, the most efficient setup is to utilize dedicated lines &#8211; one specifically for large pellets and another for micro-pellets. This setup minimizes downtime, reduces the risk of error during changeovers, and ensures consistent product quality.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-04.webp\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-04.webp\" alt=\"Khu\u00f4n \u00c9p \u0110\u00f9n (Extrusion Die)\" class=\"wp-image-4054\" srcset=\"https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-04.webp 800w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-04-300x225.webp 300w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-04-768x576.webp 768w, https:\/\/cokhitienphat.com\/wp-content\/uploads\/2026\/04\/Khuon-Ep-Dun-04-600x450.webp 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><figcaption class=\"wp-element-caption\">Khu\u00f4n \u00c9p \u0110\u00f9n (Extrusion Die)<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-monitoring-load-paramaters-amperage\"><strong>Monitoring Load Paramaters (Amperage)<\/strong><\/h2>\n\n\n\n<p>Operators must closely monitor the Amparage on the control panel during start-up with small dies. A sudden increase in curent (typically >10% of normal load) is a primary warning sign of material clogging. In such cases, feeding speed must be reduced or the pressure relief valve opened immediately to prevent a die breakage.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p>Extrusion die failure is entirely preventable if we understand the causes and properly control operating conditions. At <strong>Tien Phat Mechanical,<\/strong> we don&#8217;t just provide spare parts; we provide the engineering expertise to keep your production line running at peak efficiency. Contact us today for the optimal solution for your extrusion system.<\/p>\n\n\n\n<p>For more details on\u00a0<strong>Tien Phat Mechanical\u2019s\u00a0Extruder Dies<\/strong>,\u00a0please refer to the following\u00a0link:\u00a0<a href=\"https:\/\/cokhitienphat.com\/en\/san-pham\/extruder-die\/\">https:\/\/cokhitienphat.com\/san-pham\/khuon-may-ep-dun-extruder-die\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the specialized field of aquafeed production, changing to small die sizes (micro-pellet) from 0.5 &#8211; 1.5mm, presents significant technical challenges. A minor oversight in operational protocol can lead to die failure, increasing spare part expenditures and causing expensive production downtime. Base on a real-world technical support case handled by Tien Phat Mechanical, we have &#8230;<\/p>\n","protected":false},"author":7,"featured_media":4049,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[163,1,279],"tags":[],"class_list":["post-4094","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-company-news","category-news","category-technical-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.7 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Case Study: Operational Secrets to Prevent Die Breakage in Micro-Pellet Extrusion - C\u01a1 Kh\u00ed Ti\u1ebfn Ph\u00e1t<\/title>\n<meta name=\"description\" content=\"Extrusion die failure is entirely preventable if we understand the causes and properly control operating conditions.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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