{"id":6804,"date":"2012-05-16T06:54:38","date_gmt":"2012-05-16T11:54:38","guid":{"rendered":"https:\/\/www.insta-pro.com\/fr\/2012\/05\/16\/what-is-shear-and-how-does-it-apply-to-extrusion\/"},"modified":"2025-12-18T10:14:18","modified_gmt":"2025-12-18T16:14:18","slug":"what-is-shear-and-how-does-it-apply-to-extrusion","status":"publish","type":"post","link":"https:\/\/instapro.spinuhost.com\/fr\/blog\/ingenierie-maintenance\/what-is-shear-and-how-does-it-apply-to-extrusion\/","title":{"rendered":"Qu\u2019est-ce que le cisaillement, et comment s\u2019applique-t-il \u00e0 l\u2019extrusion\u00a0?"},"content":{"rendered":"<p>En termes simples, le cisaillement est ce qui se produit lorsque deux forces agissent l\u2019une contre l\u2019autre dans des directions oppos\u00e9es. L\u2019exemple le plus simple, c\u2019est lorsque vous frottez vos mains l\u2019une contre l\u2019autre. Les \u00ab\u00a0forces\u00a0\u00bb sont vos mains, et le \u00ab\u00a0cisaillement\u00a0\u00bb, c\u2019est le frottement entre elles. Vous pouvez remarquer que cela cr\u00e9e de la chaleur. En ce qui concerne l\u2019extrusion, nous pouvons en tirer parti.<\/p>\n<p><strong>Pourquoi est-ce important dans l\u2019extrusion\u00a0?<\/strong><\/p>\n<p>Parce que c\u2019est comme \u00e7a qu\u2019une extrudeuse fonctionne. Lorsque les ingr\u00e9dients passent dans le fourreau, les vis et les anneaux de restriction, ils sont soumis \u00e0 des taux de cisaillement tr\u00e8s \u00e9lev\u00e9s qui cr\u00e9ent de tr\u00e8s hautes temp\u00e9ratures. Cela cr\u00e9e \u00e9galement \u00e9norm\u00e9ment de pression. Dans le cas des graines de soja, la temp\u00e9rature du tourteau final peut atteindre 330\u00a0\u00b0F (165\u00a0\u00b0C) sans apport de chaleur\u00a0!<\/p>\n<p><strong>Que peut-on faire de cela\u00a0?<\/strong><\/p>\n<p>Ce cisaillement est ce qui permet de fabriquer des produits tels que le soja entier. L\u2019image montre les cellules d\u2019une graine de soja brute. Chaque cellule contient l\u2019huile de la graine. Pendant l\u2019extrusion, la tension de cisaillement et la pression sont si \u00e9lev\u00e9es que cela rompt et casse ces parois. Le r\u00e9sultat est visible dans la derni\u00e8re image. Comme il n\u2019y a plus de parois cellulaires, l\u2019huile se m\u00e9lange avec le tourteau pour cr\u00e9er le soja entier.<\/p>\n<p><strong>Et maintenant\u00a0?<\/strong><\/p>\n<p>Nous pouvons nous focaliser sur le cisaillement et l\u2019utiliser \u00e0 notre avantage pour cr\u00e9er toutes sortes de produits pr\u00e9sentant des avantages nutritionnels. L\u2019action de cisaillement \u00e0 l\u2019int\u00e9rieur d\u2019une extrudeuse est ce qui nous permet de fabriquer des produits tels que des c\u00e9r\u00e9ales, de la nourriture pour animaux domestiques, des aliments pour animaux d\u2019\u00e9levage, etc. Avec les bons conseils et l\u2019expertise, cela offre de nouvelles possibilit\u00e9s du point de vue avantages nutritionnels et capacit\u00e9s de production.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>En termes simples, le cisaillement est ce qui se produit lorsque deux forces agissent l\u2019une contre l\u2019autre dans des directions oppos\u00e9es. L\u2019exemple le plus simple, c\u2019est lorsque vous frottez vos mains l\u2019une contre l\u2019autre. Les \u00ab\u00a0forces\u00a0\u00bb sont vos mains, et le \u00ab\u00a0cisaillement\u00a0\u00bb, c\u2019est le frottement entre elles. Vous pouvez remarquer que cela cr\u00e9e de la [&hellip;]<\/p>\n","protected":false},"author":68,"featured_media":10723,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7177],"tags":[585,1049],"class_list":["post-6804","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ingenierie-maintenance","tag-produits-enrichis-fr-3","tag-soja-entier-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Qu\u2019est-ce que le cisaillement, et comment s\u2019applique-t-il \u00e0 l\u2019extrusion\u00a0?<\/title>\n<meta name=\"description\" content=\"En termes simples, le cisaillement est ce qui se produit lorsque deux forces agissent l\u2019une contre l\u2019autre dans des directions oppos\u00e9es. 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