{"version":"1.0","provider_name":"\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u91d1\u578b\uff5c\u4e2d\u56fd\u91d1\u578b\u30e1\u30fc\u30ab\u30fc","provider_url":"https:\/\/www.plasticmoldco.com\/ja","title":"Cooling system equations - Plastic Mold | China Mold Maker","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"sS1MkAmm0n\"><a href=\"https:\/\/www.plasticmoldco.com\/ja\/2018\/10\/16\/\u51b7\u5374\u30b7\u30b9\u30c6\u30e0\u65b9\u7a0b\u5f0f\/\">\u51b7\u5374\u30b7\u30b9\u30c6\u30e0\u65b9\u7a0b\u5f0f<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.plasticmoldco.com\/ja\/2018\/10\/16\/\u51b7\u5374\u30b7\u30b9\u30c6\u30e0\u65b9\u7a0b\u5f0f\/embed\/#?secret=sS1MkAmm0n\" width=\"600\" height=\"338\" title=\"&#8220;Cooling system equations&#8221; &#8212; Plastic Mold | China Mold Maker\" data-secret=\"sS1MkAmm0n\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/* ]]> *\/\n<\/script>","description":"[et_pb_section bb_built=&#8221;1&#8243; disabled_on=&#8221;on|on|&#8221; _builder_version=&#8221;3.10.2&#8243; custom_padding=&#8221;0|0px|54px|0px|false|false&#8221; next_background_color=&#8221;#000000&#8243;][et_pb_row custom_padding=&#8221;0|0px|0|0px|false|false&#8221; _builder_version=&#8221;3.0.48&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221;][et_pb_column type=&#8221;4_4&#8243;][et_pb_text _builder_version=&#8221;3.10.2&#8243; border_width_all=&#8221;3px&#8221; border_color_all=&#8221;#e5e5e5&#8243;] Cooling time Theoretically, cooling time is proportional to the square of the heaviest part wall thickness or the power of 1.6 for the largest runner diameter. That is: where the thermal diffusivity of polymer melt is defined as In other words, doubling the wall thickness quadruples the cooling time. Reynolds number and coolant flow Whether or not the coolant flow is turbulent can be determined by the Reynolds number (Re), as listed in Table 1. The Reynolds number is defined as: where\u00a0\u03c1\u00a0is the density of the coolant,\u00a0U\u00a0is the averaged velocity of the coolant,\u00a0d\u00a0is the diameter [&hellip;]","thumbnail_url":"https:\/\/web.archive.org\/web\/20140722204707im_\/http:\/\/www.moldchina.org\/wp-content\/uploads\/2011\/10\/Cooling-time.gif"}