{"id":31836,"date":"2025-03-24T09:36:04","date_gmt":"2025-03-24T09:36:04","guid":{"rendered":"https:\/\/hookecells.com\/?post_type=product&#038;p=31836"},"modified":"2025-03-24T10:30:22","modified_gmt":"2025-03-24T10:30:22","slug":"corundum-crucible-without-lid-99-alumina-square-boat-rectangular-combustion-boat-for-tubular-furnace-13-5ml-1000ml","status":"publish","type":"product","link":"https:\/\/hookecells.com\/fr\/produit\/corundum-crucible-without-lid-99-alumina-square-boat-rectangular-combustion-boat-for-tubular-furnace-13-5ml-1000ml\/","title":{"rendered":"Corundum Crucible without Lid, 99% Alumina Square Boat, Rectangular Combustion Boat, for Tubular Furnace, 13.5ml-1000ml"},"content":{"rendered":"\t\t\t<link rel=\"stylesheet\" id=\"elementor-post-31294-css\" href=\"https:\/\/hookecells.com\/wp-content\/uploads\/elementor\/css\/post-31294.css?ver=1768287841\" type=\"text\/css\" media=\"all\">\n\t\t\t\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"31294\" class=\"elementor elementor-31294\">\n\t\t\t\t<div class=\"wd-negative-gap elementor-element elementor-element-7c515c6 wd-section-stretch e-flex e-con-boxed e-con e-parent\" data-id=\"7c515c6\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-65a5272 e-con-full e-flex e-con e-child\" data-id=\"65a5272\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f0c5d63 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"f0c5d63\" data-element_type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-default text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h4 class=\"woodmart-title-container title wd-fontsize-l\">Precautions for Using 99% Alumina Crucibles<\/h4> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-12996ef e-grid e-con-full e-con e-child\" data-id=\"12996ef\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6e1d846 elementor-widget elementor-widget-wd_text_block\" data-id=\"6e1d846\" data-element_type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<ol start=\"1\"><li><p>Before the first use, the crucible should be placed in an oven at approximately 105\u00b0C for 120 minutes to remove moisture.<\/p><\/li><li><p>Do not use gasoline torches, acetylene torches, or alcohol lamps for direct heating to avoid cracking of the crucible due to uneven heating.<\/p><\/li><li>\u00a0The distance between the crucible and the heating element (such as carbon tubes, silicon carbide rods, heating wires, etc.) should be greater than 2 cm.<\/li><\/ol>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6fbbc1e elementor-widget elementor-widget-wd_text_block\" data-id=\"6fbbc1e\" data-element_type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<p>4. The rate of heating or cooling should not be too rapid. Below 1200\u00b0C, the rate should be less than 5\u00b0C per minute; above 1200\u00b0C, it should be less than 4\u00b0C per minute. For cooling, it is recommended to use controlled power cooling. Directly turning off the power at high temperatures may cause rapid initial cooling, potentially leading to cracking.<\/p><p>5. For large crucibles, it is advisable to avoid direct contact between the bottom of the crucible and the furnace floor. Use high-temperature resistant materials such as <strong>corundum plates<\/strong> to elevate the crucible, promoting air convection and extending the crucible's lifespan (as shown at right).<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cbd77d8 elementor-widget elementor-widget-wd_image_or_svg\" data-id=\"cbd77d8\" data-element_type=\"widget\" data-widget_type=\"wd_image_or_svg.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<div class=\"wd-image text-left\">\n\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"649\" height=\"463\" src=\"https:\/\/hookecells.com\/wp-content\/uploads\/2025\/03\/crucibles012.jpg\" class=\"attachment-full size-full\" alt=\"\" srcset=\"https:\/\/hookecells.com\/wp-content\/uploads\/2025\/03\/crucibles012.jpg 649w, https:\/\/hookecells.com\/wp-content\/uploads\/2025\/03\/crucibles012-400x285.jpg 400w, https:\/\/hookecells.com\/wp-content\/uploads\/2025\/03\/crucibles012-430x307.jpg 430w, https:\/\/hookecells.com\/wp-content\/uploads\/2025\/03\/crucibles012-150x107.jpg 150w\" sizes=\"(max-width: 649px) 100vw, 649px\" \/>\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n","protected":false},"excerpt":{"rendered":"<p>This Square\/Rectangular Crucible is manufactured using high-purity Al2O3 (&gt;99%) through a slip-casting process, resulting in high density and smooth, even surfaces on both the interior and exterior. It is designed for long-term use at temperatures up to 1600\u00b0C.<\/p>\n","protected":false},"featured_media":31698,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[339,338],"product_tag":[],"class_list":{"0":"post-31836","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-alumina-crucibles","7":"product_cat-crucibles-boat","9":"first","10":"instock","11":"shipping-taxable","12":"purchasable","13":"product-type-variable"},"_links":{"self":[{"href":"https:\/\/hookecells.com\/fr\/wp-json\/wp\/v2\/product\/31836","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hookecells.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hookecells.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hookecells.com\/fr\/wp-json\/wp\/v2\/comments?post=31836"}],"version-history":[{"count":2,"href":"https:\/\/hookecells.com\/fr\/wp-json\/wp\/v2\/product\/31836\/revisions"}],"predecessor-version":[{"id":31933,"href":"https:\/\/hookecells.com\/fr\/wp-json\/wp\/v2\/product\/31836\/revisions\/31933"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hookecells.com\/fr\/wp-json\/wp\/v2\/media\/31698"}],"wp:attachment":[{"href":"https:\/\/hookecells.com\/fr\/wp-json\/wp\/v2\/media?parent=31836"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hookecells.com\/fr\/wp-json\/wp\/v2\/product_brand?post=31836"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hookecells.com\/fr\/wp-json\/wp\/v2\/product_cat?post=31836"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hookecells.com\/fr\/wp-json\/wp\/v2\/product_tag?post=31836"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}