Heating elements turn electricity into heat. The shape depends on what you are heating.<\/p>\n
A thin metal rod that goes into a drilled hole: moulds, hot plates, packaging and sealing machines. Measure the diameter and length<\/strong> exactly. The hole must be a close fit: an air gap traps the heat and the element burns out early.<\/p>\n A metal ring that clamps around a barrel or a nozzle, as on injection moulding and extrusion machines. Measure the inside diameter and the width<\/strong>, and check where the clamp and the wire leads go, and if you need a hole for a thermocouple.<\/p>\n A metal tube, straight, U-shaped or bent to shape, for heating water, oil or air. For water, copper or stainless steel; for oil, ask for a lower watt density (less power for each cm of length), so the oil does not burn on the surface.<\/p>\n Power changes with the square<\/strong> of the voltage. A 400 V element on 230 V gives only about a third of its power. A 230 V element on 400 V gives about three times its power and burns out in minutes. Always give the seller both the watts and the volts.<\/p>\n Also ask about the wire lead length and type, and if a built-in thermocouple is possible. With the old element in your hand, most sellers can make an exact copy.<\/p>\n","protected":false},"excerpt":{"rendered":" \u06a9\u062f\u0627\u0645 \u0627\u0644\u0645\u0646\u062a \u0628\u0631\u0627\u06cc \u06a9\u062f\u0627\u0645 \u06a9\u0627\u0631\u060c \u0686\u0647 \u0627\u0646\u062f\u0627\u0632\u0647\u200c\u0647\u0627\u06cc\u06cc \u0631\u0627 \u0628\u06af\u06cc\u0631\u06cc\u062f\u060c \u0648 \u0686\u0631\u0627 \u0648\u0644\u062a\u0627\u0698 \u0627\u06cc\u0646\u200c\u0642\u062f\u0631 \u0645\u0647\u0645 \u0627\u0633\u062a.<\/p>\n","protected":false},"author":0,"featured_media":130,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-115","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/posts\/115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/comments?post=115"}],"version-history":[{"count":0,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/posts\/115\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/media\/130"}],"wp:attachment":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/media?parent=115"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/categories?post=115"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/tags?post=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Band heaters<\/h2>\n
Tubular heaters<\/h2>\n
Voltage matters more than you think<\/h2>\n