El POM se mecaniza limpiamente, lo que tienta a taladrarlo como si fuera lat\u00f3n. De ah\u00ed vienen las grietas. El acetal tiene baja conductividad t\u00e9rmica, as\u00ed que el calor generado en la punta de la broca no tiene a d\u00f3nde ir m\u00e1s que hacia el material que rodea el agujero.<\/p>\n\n
Cuando ese calor se acumula, el pol\u00edmero se dilata, la broca muerde y la tensi\u00f3n circunferencial resultante parte el jefe, a menudo un d\u00eda despu\u00e9s y no de inmediato, y por eso se culpa al dise\u00f1o de la pieza. Los dos controles son la holgura y la evacuaci\u00f3n. Use una holgura de entre cinco y ocho por ciento del di\u00e1metro de la broca en el agujero, no el dos por ciento que usar\u00eda en acero.<\/p>\n\n
Pull the drill out frequently to clear chips, and use a sharp, high-rake bit with a point angle around 90 degrees. If the hole is deep, drill in stages. And if you are threading the hole afterwards, remember that a self-tapping screw in POM needs a considerably larger pilot hole than the screw manufacturer's chart suggests for metal.<\/p>\n\n","protected":false},"excerpt":{"rendered":"
El acetal es uno de los pl\u00e1sticos m\u00e1s f\u00e1ciles de mecanizar y uno de los m\u00e1s f\u00e1ciles de partir. El fallo casi siempre se debe al calor y a la holgura, no a la velocidad de corte.<\/p>\n","protected":false},"author":193679612,"featured_media":147,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[4581],"tags":[132591],"class_list":["post-146","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-4581","tag-machining"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pcp8Cz-2m","jetpack-related-posts":[{"id":162,"url":"https:\/\/cntopplastics.com\/es\/coolant-selection-plastics\/","url_meta":{"origin":146,"position":0},"title":"Selecci\u00f3n del refrigerante al mecanizar pl\u00e1sticos","author":"jessemei","date":"2026-02-12","format":false,"excerpt":"Most plastics can be machined dry. When you do need coolant, the wrong one causes more problems than the heat it was meant to remove.","rel":"","context":"En \u00ab\u672a\u5206\u7c7b\u00bb","block_context":{"text":"\u672a\u5206\u7c7b","link":"https:\/\/cntopplastics.com\/es\/category\/%e6%9c%aa%e5%88%86%e7%b1%bb\/"},"img":{"alt_text":"Coolant selection when machining plastics","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-coolant-selection-plastics.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-coolant-selection-plastics.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-coolant-selection-plastics.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-coolant-selection-plastics.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":106,"url":"https:\/\/cntopplastics.com\/es\/pom-c-vs-pom-h\/","url_meta":{"origin":146,"position":1},"title":"\u00bfPOM-C o POM-H? Una comparaci\u00f3n pr\u00e1ctica para piezas mecanizadas","author":"jessemei","date":"2026-08-27","format":false,"excerpt":"Copolymer or homopolymer, both called acetal, both white or black, both machinable. The difference shows up in the middle of a bore and at the end of a long run.","rel":"","context":"En \u00ab\u672a\u5206\u7c7b\u00bb","block_context":{"text":"\u672a\u5206\u7c7b","link":"https:\/\/cntopplastics.com\/es\/category\/%e6%9c%aa%e5%88%86%e7%b1%bb\/"},"img":{"alt_text":"POM-C or POM-H? A practical comparison for machined parts","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pom-c-vs-pom-h.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pom-c-vs-pom-h.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pom-c-vs-pom-h.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pom-c-vs-pom-h.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":92,"url":"https:\/\/cntopplastics.com\/es\/peek-vs-pom-cost\/","url_meta":{"origin":146,"position":2},"title":"PEEK frente a POM: \u00bfcu\u00e1ndo resulta realmente m\u00e1s barato el material caro?","author":"jessemei","date":"2026-10-08","format":false,"excerpt":"PEEK costs roughly 20 times more per kilogram than POM \u2014 yet on a part-cost basis it often wins. Here is how to run the comparison properly, including the downtime maths most buyers forget.","rel":"","context":"En \u00ab\u672a\u5206\u7c7b\u00bb","block_context":{"text":"\u672a\u5206\u7c7b","link":"https:\/\/cntopplastics.com\/es\/category\/%e6%9c%aa%e5%88%86%e7%b1%bb\/"},"img":{"alt_text":"PEEK vs POM: when is the expensive material actually cheaper?","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pom-cost.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pom-cost.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pom-cost.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pom-cost.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":164,"url":"https:\/\/cntopplastics.com\/es\/food-processing-wear-parts\/","url_meta":{"origin":146,"position":3},"title":"Piezas de desgaste para el procesado de alimentos: elegir entre POM, UHMW-PE y PEEK","author":"jessemei","date":"2026-02-05","format":false,"excerpt":"Three materials cover most food-line wear applications. The deciding factor is usually cleaning regime and temperature, not load.","rel":"","context":"En \u00ab\u672a\u5206\u7c7b\u00bb","block_context":{"text":"\u672a\u5206\u7c7b","link":"https:\/\/cntopplastics.com\/es\/category\/%e6%9c%aa%e5%88%86%e7%b1%bb\/"},"img":{"alt_text":"Food-processing wear parts: choosing between POM, UHMW-PE and PEEK","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-processing-wear-parts.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-processing-wear-parts.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-processing-wear-parts.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-processing-wear-parts.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":150,"url":"https:\/\/cntopplastics.com\/es\/turning-rod-end-face\/","url_meta":{"origin":146,"position":4},"title":"Refrentar el extremo de una barra: c\u00f3mo lograr el acabado espejo que piden los clientes","author":"jessemei","date":"2026-03-26","format":false,"excerpt":"A faced rod end is the first thing a buyer looks at. Getting it flat, concentric and free of chatter is mostly about tool geometry and support.","rel":"","context":"En \u00ab\u672a\u5206\u7c7b\u00bb","block_context":{"text":"\u672a\u5206\u7c7b","link":"https:\/\/cntopplastics.com\/es\/category\/%e6%9c%aa%e5%88%86%e7%b1%bb\/"},"img":{"alt_text":"Turning a rod end face: getting the mirror finish customers ask for","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-turning-rod-end-face.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-turning-rod-end-face.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-turning-rod-end-face.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-turning-rod-end-face.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":120,"url":"https:\/\/cntopplastics.com\/es\/export-packing-plastic-shapes\/","url_meta":{"origin":146,"position":5},"title":"Embalaje de semiproductos pl\u00e1sticos para transporte mar\u00edtimo","author":"jessemei","date":"2026-07-09","format":false,"excerpt":"A container is a slow oven with a humidity problem. 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