{"id":54,"date":"2023-12-28T13:41:59","date_gmt":"2023-12-28T12:41:59","guid":{"rendered":"https:\/\/entech.se\/?page_id=54"},"modified":"2023-12-29T09:09:11","modified_gmt":"2023-12-29T08:09:11","slug":"kunskap-om-ugnar","status":"publish","type":"page","link":"https:\/\/entech.se\/en\/kunskap-om-ugnar\/","title":{"rendered":"Knowledge about furnaces"},"content":{"rendered":"
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Knowledge about furnaces<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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We have collected a vast base of knowledge during the years\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Design<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Our furnaces are designed with the best materials and components in the market to fulfil the specified performance.<\/p>

The process in the design incorporates a systematic discussion with the customer to ensure the requirements for the furnace. The process in the design incorporates a systematic discussion with the customer to ensure the requirements for the furnace. Questions of importance in the design process:<\/p>

\u2192 Temperature level\n\u2192 Temperature profile\n\u2192 Rate of heating up and cooling down<\/p>

Normally the requirements are covered by a standard furnace which probably is the most economical solution. Our vast experience in furnace design will assist our customers to make an optimal choice of furnace.<\/p>

Certain of our designs are proprietary designs and cannot be disclosed. This is normally covered in an agreement decided at contract signing.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Different techniques depending on temperature\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The technology used is primarily decided by the temperature level in the furnace chamber.\nWhen we are using oxidizing atmosphere metallic elements are used for temperatures\nup to 1300 OC. These elements are normally applied as wires mounted on ceramic support\nbars or embedded in the insulation.<\/p>

When the operating temperatures reach up to a maximum of 1550 OC silicon carbide\nelements are used. They are applied as rods mounted horizontally or vertically.<\/p>

Ceramic molybdenum-disilicide elements are used when the furnace temperature\nare up to 1800 OC. These elements are hairpin shaped and are mounted vertically\nhanging through the roof of the furnace alongside the furnace walls.<\/p>

For furnaces operating up to 2100 OC the only elements that can operate in oxidizing\natmosphere are Zirconium dioxide elements. They require very specific design solutions.\nFor these furnaces only smaller chambers can be built.<\/p>

In even higher temperatures graphite elements are used in vacuum or protective gas\natmospheres.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Temperature uniformity\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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In order to obtain good temperature uniformity the elements must be situated in the chamber depending on how the insulation is designed. We are normally using ceramic fibres or high temperature bricks as the hot phase. A combination of lower grade insulation materials will then assure good operating economy, high temperature uniformity with a long life.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Controlling\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The control of the furnace temperature is important and normally thyristor control\nis used. Also program for taking the furnace up to temperature and for cooling down\nis often included in the temperature controller. Many customers also require data\nlogging of temperatures and careful process control which is performed by computer control.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Kunskap om ugnar Vi har genom \u00e5ren skaffat oss en stor kunskapsbas inom branschen Konstruktion V\u00e5ra ugnar konstrueras endast med anv\u00e4ndning av de b\u00e4sta materialen ochkomponenterna f\u00f6r att uppfylla den fastst\u00e4llda specifikationen. Beslutsprocessen inf\u00f6r en konstruktion innefattar en noggrann genomg\u00e5ngmed kunden av de behov han har. Fr\u00e5gor som \u00e4r viktiga f\u00f6r hur v\u00e5r konstruktionskall g\u00f6ras: […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-54","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/entech.se\/en\/wp-json\/wp\/v2\/pages\/54","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/entech.se\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/entech.se\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/entech.se\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/entech.se\/en\/wp-json\/wp\/v2\/comments?post=54"}],"version-history":[{"count":13,"href":"https:\/\/entech.se\/en\/wp-json\/wp\/v2\/pages\/54\/revisions"}],"predecessor-version":[{"id":265,"href":"https:\/\/entech.se\/en\/wp-json\/wp\/v2\/pages\/54\/revisions\/265"}],"wp:attachment":[{"href":"https:\/\/entech.se\/en\/wp-json\/wp\/v2\/media?parent=54"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}