{"id":1927,"date":"2025-08-15T16:42:14","date_gmt":"2025-08-15T08:42:14","guid":{"rendered":"https:\/\/yexintech.com\/?p=1927"},"modified":"2025-09-25T22:09:58","modified_gmt":"2025-09-25T14:09:58","slug":"vacuum-muffle-furnace","status":"publish","type":"post","link":"https:\/\/yexintech.com\/de\/vacuum-muffle-furnace.html","title":{"rendered":"vacuum muffle furnace"},"content":{"rendered":"<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined bom50 top50\" id=\"\" style=\"background-color:#ffffff;padding-top:104px;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<section class=\"wp-block-themepark-block-themepark-imgtext thempark-block themepark_imgtext moveupd  undefined\" style=\"\"><div class=\"themepark_imgtext_img\" style=\"width:39%;border-radius:18px;\" data-swiper-parallax=\"-1800\"><img class=\"lazyload  swiper-lazy swiper-move-lazy\" style=\"\" data-src=\"https:\/\/yexintech.com\/wp-content\/uploads\/2025\/09\/Vacuum-muffle-furnace.webp\" alt=\"Vacuum muffle furnace\"\/><\/div><div class=\"themepark_imgtext_text\" style=\"width:58%;padding-left:89px;\" data-swiper-parallax=\"-1600\">\n<div class=\"wp-block-column\">\n<div class=\"wp-block-themepark-block-themepark-xian theme_fang_out  top15\" style=\"text-align:left;padding-top:64px;\"><div class=\"fangbox\" style=\"width:undefinedpx;\"><\/div><\/div>\n\n\n\n<div class=\"wp-block-themepark-block-themepark-wright content-super-p\" style=\"font-size:16px;line-height:33px;color:#ffffff;padding:10px 10px;\">\n<div class=\"wp-block-column\">\n<h1 class=\"wp-block-heading has-large-font-size\"><strong>vacuum muffle furnace<\/strong><\/h1>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Scope of application<\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>The vacuum muffle furnace is indispensable in the field of materials science and heat treatment. Its primary advantage is its ability to provide a high-temperature, oxygen-free, and contaminant-free environment, which effectively prevents oxidation, decarburization, and other undesirable reactions during the heating process.&nbsp;<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-themepark-block-btn themepark-i-btn-out\" style=\"text-align:undefined;\"><div class=\"themepark-i-btn-out_ins\" style=\"\"><div class=\"themepark-i-btn-out_in\"><div class=\"themepark-i-btn\" style=\"background-color:#2ba8db;color:#000;font-size:16px;border-radius:20px;padding:14px 43px;\"><i class=\"fas fa-phone\"><\/i><span>TEL+8618836556085<\/span><a class=\"hovers  fas fa-phone\" data-title=\"TEL+8618836556085\" style=\"color:#ffffff;background-color:#2ba8db;padding:14px 43px;border-radius:20px;\" rel=\"noopener noreferrer\" target=\"_self\"><\/a><\/div><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><div class=\"themepark_imgtext_ba\" style=\"opacity:0.95;\"><\/div><\/section>\n\n\n\n<div class=\"wp-block-themepark-block-themepark-xian theme_fang_out  top15\" style=\"text-align:left;padding-top:75px;\"><div class=\"fangbox\" style=\"width:undefinedpx;\"><\/div><\/div>\n\n\n\n<div class=\"wp-block-themepark-block-themepark-wright content-super-p\" style=\"font-size:16px;line-height:20px;color:#ffffff;padding:10px 1px;\">\n<div class=\"wp-block-column\">\n <div class=\"block_breadcrumbs\"><div class=\"breadcrumbs\"><nav> <a itemprop=\"breadcrumb\" href=\"https:\/\/yexintech.com\/de\">Home<\/a> \/ <\/nav><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><div class=\"layout_badh\"><div class=\"shizhezhao\" style=\"opacity:0.56;background-color:#146ba2;\"><\/div><div class=\"PcOnly themepark-block_layout_ba lazyload swiper-lazy\" style=\"background-repeat:no-repeat;background-size:cover;background-attachment:fixed;\" data-background=\"http:\/\/henanyexin.com\/wp-content\/uploads\/2024\/12\/pro-1.jpg\"><\/div><div class=\"MovePnly themepark-block_layout_ba lazyload swiper-move-lazy\" style=\"background-repeat:no-repeat;background-size:cover;background-attachment:fixed;\" data-background=\"http:\/\/henanyexin.com\/wp-content\/uploads\/2024\/12\/pro-1.jpg\"><\/div><\/div><\/section>\n\n\n\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined\" id=\"\" style=\"background-color:#ffffff;padding-top:39px;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in\" style=\"max-width:1200px;\">\n<div class=\"wp-block-column block_layout_in\">\n<h1 class=\"wp-block-heading has-text-align-center has-medium-font-size\"><strong>vacuum muffle furnace<\/strong><\/h1>\n\n\n\n<div class=\"wp-block-themepark-block-themepark-wright content-super-p\" style=\"font-size:16px;line-height:30px;padding:10px 10px;\">\n<div class=\"wp-block-column\">\n<p>Vacuum muffle furnaces enable cleaner heat treatment by removing oxygen and airborne contaminants from the process environment. This article provides <strong>actionable pump-down recipes, sintering\/degassing program examples, contamination-control practices, and maintenance routines<\/strong> to optimize results and reduce downtime.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1300\" height=\"600\" src=\"https:\/\/yexintech.com\/wp-content\/uploads\/2025\/08\/vacuum-muffle-furnace-3.webp\" alt=\"vacuum muffle furnace\" class=\"wp-image-2038\" style=\"object-fit:cover;width:1300px;height:600px\" srcset=\"https:\/\/yexintech.com\/wp-content\/uploads\/2025\/08\/vacuum-muffle-furnace-3.webp 1300w, https:\/\/yexintech.com\/wp-content\/uploads\/2025\/08\/vacuum-muffle-furnace-3-300x138.webp 300w, https:\/\/yexintech.com\/wp-content\/uploads\/2025\/08\/vacuum-muffle-furnace-3-1024x473.webp 1024w, https:\/\/yexintech.com\/wp-content\/uploads\/2025\/08\/vacuum-muffle-furnace-3-768x354.webp 768w, https:\/\/yexintech.com\/wp-content\/uploads\/2025\/08\/vacuum-muffle-furnace-3-18x8.webp 18w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Pre-Run Checklist<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Verify pump oil level and condition (for rotary pumps).<\/li>\n\n\n\n<li>Check turbo alignment and spin condition if installed.<\/li>\n\n\n\n<li>Inspect chamber seals, viewports, and feedthroughs for damage.<\/li>\n\n\n\n<li>Confirm gas cylinder purity and regulator settings (if using inert purge).<\/li>\n\n\n\n<li>Ensure controller and pressure transducer are calibrated and logged.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Example Pump-Down &amp; Bake-Out Recipe (General Lab Practice)<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Initial rough pump:<\/strong> Close furnace, start roughing (rotary vane) pump until ~10\u207b\u00b2 mbar. Monitor for leaks.<\/li>\n\n\n\n<li><strong>Leak check:<\/strong> At rough vacuum, perform soap\/helium leak test at joints if pressure not dropping.<\/li>\n\n\n\n<li><strong>Bake-out (optional):<\/strong> Heat chamber slowly to 150\u2013200 \u00b0C while pumping to accelerate desorption of water\/contaminants. Maintain for 1\u20134 hours as needed.<\/li>\n\n\n\n<li><strong>High vacuum stage:<\/strong> Engage turbo pump and switch to high vacuum; monitor pressure to target (e.g., 10\u207b\u2075 mbar).<\/li>\n\n\n\n<li><strong>Process heat:<\/strong> Start programmed ramp to process temperature once pressure is stable. Avoid rapid heating during heavy outgassing.<\/li>\n\n\n\n<li><strong>Cool &amp; vent:<\/strong> Allow controlled cool to &lt;200\u2013300 \u00b0C, close turbo (if used), backfill with high-purity inert gas to atmospheric pressure before opening.<\/li>\n<\/ol>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p><strong>Tip:<\/strong> Always avoid venting directly with air at elevated temperatures\u2014use inert backfill to prevent oxidation.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Example Process Profiles<\/h2>\n\n\n\n<p><strong>A. Vacuum Degassing (Polymers \/ Resins):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pump to 10\u207b\u00b2 mbar (rough).<\/li>\n\n\n\n<li>Ramp 5\u201310 \u00b0C\/min to 120\u2013150 \u00b0C; hold 30\u2013180 min (material dependent) under vacuum to remove volatiles.<\/li>\n\n\n\n<li>Optional: increase temp stepwise for recalcitrant volatiles.<\/li>\n\n\n\n<li>Cool under vacuum, backfill with N\u2082 before opening.<\/li>\n<\/ul>\n\n\n\n<p><strong>B. Vacuum Sintering (Ceramic\/Metal Powder):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pump to 10\u207b\u2075\u201310\u207b\u2076 mbar (turbo).<\/li>\n\n\n\n<li>Ramp 3\u201310 \u00b0C\/min to intermediate soak (400\u2013800 \u00b0C) for binder burn-out.<\/li>\n\n\n\n<li>Ramp to sintering temp (e.g., 1100\u20131600 \u00b0C) per material profile; soak per densification needs.<\/li>\n\n\n\n<li>Controlled cool; backfill with inert gas below safe temp.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Contamination Control &amp; Chamber Hygiene<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>No oils or greases<\/strong> near seals and feedthroughs. Use vacuum-compatible lubricants only.<\/li>\n\n\n\n<li><strong>Pre-clean samples and fixtures<\/strong>: wipe with solvent and dry in a clean oven to reduce volatile load.<\/li>\n\n\n\n<li><strong>Avoid tape\/adhesives<\/strong> inside chamber; they outgas and foul pumps.<\/li>\n\n\n\n<li><strong>Replace pump oil<\/strong> after heavy volatile runs or per runtime to avoid cross contamination.<\/li>\n\n\n\n<li><strong>Charcoal\/cryogenic traps<\/strong> upstream of pumps can capture condensable vapors and protect pump internals.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Maintenance Schedule &amp; Pump Care<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Daily:<\/strong> Verify pump running temperature, oil level, chamber pressure trend. Empty cold ash trays and log runs.<\/li>\n\n\n\n<li><strong>Weekly:<\/strong> Check for oil discoloration, inspect seals, clean viewport and chamber interior when cold.<\/li>\n\n\n\n<li><strong>Monthly:<\/strong> Oil change for rotary pump if oil dark or per runtime hours; check belt\/turbo coupling.<\/li>\n\n\n\n<li><strong>Annually:<\/strong> Full service for turbo and mechanical pumps, replace seals\/flanges as needed, verify calibration of gauges and thermocouples.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Troubleshooting Scenarios<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Problem:<\/strong> Pressure cannot reach target with empty chamber.\n<ul class=\"wp-block-list\">\n<li><strong>Likely causes:<\/strong> leaks, dirty pump oil, failing turbo.<\/li>\n\n\n\n<li><strong>Action:<\/strong> Helium leak test, oil change, turbo inspection.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Problem:<\/strong> Pressure stable at target but rises during heating.\n<ul class=\"wp-block-list\">\n<li><strong>Likely causes:<\/strong> outgassing of load or chamber materials.<\/li>\n\n\n\n<li><strong>Action:<\/strong> Bake-out longer, reduce volatile load, use traps.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Problem:<\/strong> Pump oil foaming or vapor ingestion.\n<ul class=\"wp-block-list\">\n<li><strong>Likely causes:<\/strong> heavy condensables entering pump.<\/li>\n\n\n\n<li><strong>Action:<\/strong> Install cold trap\/activated charcoal trap and change oil.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<p><strong>Q1: Can I use standard heating elements in vacuum?<\/strong><br>Not always. Some elements oxidize or degrade faster under vacuum\/thermal cycling. Use vendor-recommended elements and consider protective shields.<\/p>\n\n\n\n<p><strong>Q2: Is a load lock necessary?<\/strong><br>For high throughput where frequent cycles are required and maintaining vacuum is critical, a load lock minimizes pump cycles and speeds throughput.<\/p>\n\n\n\n<p><strong>Q3: What vacuum level do I need for sintering vs degassing?<\/strong><br>Degassing often needs only rough vacuum (10\u207b\u00b2\u201310\u207b\u00b3 mbar). High-quality sintering (to remove gases and avoid oxidation) may require 10\u207b\u2075\u201310\u207b\u2076 mbar.<\/p>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>vacuum muffle furnace<\/strong> video<\/h2>\n\n\n\n<div class=\"wp-block-themepark-block-themepark-iframe themepark-iframe\"><iframe src=\"https:\/\/www.youtube.com\/embed\/d8enzb6uPKw?si=oFSPQy8KN2JJr3L9\" title=\"vacuum muffle furnace\" scrolling=\"no\" frameborder=\"0\"><\/iframe><img decoding=\"async\" alt=\"vacuum muffle furnace\" src=\"https:\/\/yexintech.com\/wp-content\/themes\/smartenterprise\/images\/iframe.jpg\"\/><\/div>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Model<\/td><td>Max.temperature<\/td><td>Inner volume<\/td><td>Inner size<\/td><td>Power and Voltage<\/td><\/tr><tr><td>YX-1200-1L<\/td><td>1200\u2103<\/td><td>1L<\/td><td>105*105*110mm<\/td><td>1KW\/AC220V<\/td><\/tr><tr><td>YX-1200-4.5L<\/td><td>1200\u2103<\/td><td>4.5L<\/td><td>150*150*200mm<\/td><td>2.5KW\/AC220V<\/td><\/tr><tr><td>YX-1200-7.2L<\/td><td>1200\u2103<\/td><td>7.2L<\/td><td>200*120*300mm<\/td><td>3KW\/AC220V<\/td><\/tr><tr><td>YX-1200-18L<\/td><td>1200\u2103<\/td><td>18L<\/td><td>250*250*300mm<\/td><td>5KW\/AC220V<\/td><\/tr><tr><td>YX-1200-36L<\/td><td>1200\u2103<\/td><td>36L<\/td><td>300*300*400mm<\/td><td>9KW\/AC380V<\/td><\/tr><tr><td>YX-1400-3.6L<\/td><td>1400\u2103<\/td><td>3.6L<\/td><td>150*150*160mm<\/td><td>4KW\/AC220V<\/td><\/tr><tr><td>YX-1400-8L<\/td><td>1400\u2103<\/td><td>8L<\/td><td>200*200*200mm<\/td><td>6KW\/AC220V<\/td><\/tr><tr><td>YX-1400-18L<\/td><td>1400\u2103<\/td><td>18L<\/td><td>250*250*300mm<\/td><td>9KW\/AC220V<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><\/h2>\n\n\n\n<p><\/p>\n<\/div>\n<\/div><div class=\"layout_badh\"><\/div><\/section>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":2033,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"themepark_post_bcolor":"#f0f4f9","themepark_post_width":"100%","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":true,"themepark_post_main_b":"","themepark_post_main_p":100,"themepark_paddingblock":true,"footnotes":""},"categories":[48],"tags":[61],"class_list":["post-1927","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lab-furnace","tag-vacuum-muffle-furnace"],"metadata":{"_canshu":["a:4:{i:0;a:5:{s:5:\"title\";s:4:\"Size\";s:4:\"text\";s:9:\"customize\";s:2:\"f1\";s:0:\"\";s:2:\"f2\";s:0:\"\";s:2:\"f3\";s:0:\"\";}i:1;a:5:{s:5:\"title\";s:26:\"Classification temperature\";s:4:\"text\";s:14:\"\t1200-1900 \u00b0C\";s:2:\"f1\";s:0:\"\";s:2:\"f2\";s:0:\"\";s:2:\"f3\";s:0:\"\";}i:2;a:5:{s:5:\"title\";s:19:\"Working temperature\";s:4:\"text\";s:13:\"1000-1750 \u00b0C\";s:2:\"f1\";s:0:\"\";s:2:\"f2\";s:0:\"\";s:2:\"f3\";s:0:\"\";}i:3;a:5:{s:5:\"title\";s:5:\"Usage\";s:4:\"text\";s:53:\"High temperature fields that require product rigidity\";s:2:\"f1\";s:0:\"\";s:2:\"f2\";s:0:\"\";s:2:\"f3\";s:0:\"\";}}"],"themepark_post_width":["100%"],"themepark_post_img":[""],"themepark_post_img_re":[""],"themepark_post_img_cover":[""],"themepark_post_img_fixed":[""],"themepark_post_hide_title":["1"],"themepark_paddingblock":["1"],"catce":["sidebar-widgets4"],"views":["4873"],"themepark_post_bcolor":["#f0f4f9"],"themepark_seo_description":["Explore high-performance vacuum muffle furnaces for laboratory and industrial applications. Ideal for heat treatment, sintering, and materials research."],"_wp_old_date":["2025-03-31","2025-08-08"],"themepark_seo_title":["Vacuum Muffle Furnace | High-Temperature Laboratory & Industrial Ovens"],"themepark_seo_keyword":["Vacuum Muffle Furnace\uff0cLaboratory Vacuum Furnace\uff0cHigh-Temperature Vacuum Oven"],"_wp_old_slug":["ceramic-fiberboard"],"_dp_original":["1925"],"_edit_lock":["1758809399:1"],"_edit_last":["1"],"_thumbnail_id":["2033"]},"medium_url":"https:\/\/yexintech.com\/wp-content\/uploads\/2025\/09\/Vacuum-muffle-furnace-300x300.webp","thumbnail_url":"https:\/\/yexintech.com\/wp-content\/uploads\/2025\/09\/Vacuum-muffle-furnace-150x150.webp","full_url":"https:\/\/yexintech.com\/wp-content\/uploads\/2025\/09\/Vacuum-muffle-furnace.webp","_links":{"self":[{"href":"https:\/\/yexintech.com\/de\/wp-json\/wp\/v2\/posts\/1927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yexintech.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yexintech.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yexintech.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yexintech.com\/de\/wp-json\/wp\/v2\/comments?post=1927"}],"version-history":[{"count":7,"href":"https:\/\/yexintech.com\/de\/wp-json\/wp\/v2\/posts\/1927\/revisions"}],"predecessor-version":[{"id":2085,"href":"https:\/\/yexintech.com\/de\/wp-json\/wp\/v2\/posts\/1927\/revisions\/2085"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yexintech.com\/de\/wp-json\/wp\/v2\/media\/2033"}],"wp:attachment":[{"href":"https:\/\/yexintech.com\/de\/wp-json\/wp\/v2\/media?parent=1927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yexintech.com\/de\/wp-json\/wp\/v2\/categories?post=1927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yexintech.com\/de\/wp-json\/wp\/v2\/tags?post=1927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}