{"id":56548,"date":"2026-01-14T02:24:25","date_gmt":"2026-01-14T02:24:25","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=56548"},"modified":"2026-01-14T02:27:55","modified_gmt":"2026-01-14T02:27:55","slug":"o-que-e-craqueamento-a-quente","status":"publish","type":"post","link":"https:\/\/www.kaysuns.com\/pt\/what-is-hot-cracking\/","title":{"rendered":"O que \u00e9 Hot Cracking?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"56548\" class=\"elementor elementor-56548\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1b11a9f e-flex e-con-boxed e-con e-parent\" data-id=\"1b11a9f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e5f7426 elementor-widget elementor-widget-text-editor\" data-id=\"e5f7426\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<strong>Hot cracking<\/strong>,also known as solidification cracking,occurs during the cooling and solidification phase of the welding process.This phenomenon creates fractures in the weld metal or the heat-affected zone (HAZ) before the joint reaches room temperature.If you ignore the risks of Hot Cracking,you face the danger of sudden leaks in high-pressure lines.\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b2f158a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b2f158a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8af0479\" data-id=\"8af0479\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-77050a9 elementor-widget elementor-widget-heading\" data-id=\"77050a9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Mechanism of Hot Cracking<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f43c5e1 elementor-widget elementor-widget-text-editor\" data-id=\"f43c5e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tHot cracking happens when low-melting-point impurities concentrate at the grain boundaries of the cooling weld.As the weld metal shrinks during cooling,it creates tensile stress across these grain boundaries.If a liquid film of impurities still exists,the metal cannot resist the stress.As a result,the grains pull apart,leaving a microscopic or visible crack.This often occurs in the center of the weld bead,where the final solidification takes place.\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6327f96 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6327f96\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-bbf20cb\" data-id=\"bbf20cb\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-375c75d elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"375c75d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What We Do<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26ccf95 elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"26ccf95\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Plate<\/li><li>Sheet<\/li><li>Forgings<\/li><li>Round Bar<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f0dd63c elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"f0dd63c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Flange<\/li><li>Pipes<\/li><li>Fittings<\/li><li>Customized<\/li><\/ul>\t\t\t\t\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<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-9ad7149\" data-id=\"9ad7149\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-565c3c7 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"565c3c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Contact Us For More Information\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ec3c3e4 elementor-align-center elementor-mobile-align-center elementor-widget__width-initial elementor-widget elementor-widget-button\" data-id=\"ec3c3e4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjQ2ODEzIiwidG9nZ2xlIjpmYWxzZX0%3D\" target=\"_blank\" id=\"#241018\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Contact Us<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fef647e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fef647e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6e4b50e\" data-id=\"6e4b50e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e60282e elementor-widget elementor-widget-heading\" data-id=\"e60282e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Hot Cracking in Austenitic Stainless Steels<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2bf09d4 elementor-widget elementor-widget-text-editor\" data-id=\"2bf09d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tStandard austenitic stainless steels,like 304L and 316L,are widely used for <a href=\"https:\/\/www.kaysuns.com\/stainless-steel-pipe-fittings\/\" target=\"_blank\" rel=\"noopener\">pipe fittings<\/a>.However,these alloys are susceptible to solidification issues due to their high thermal expansion.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a6f677 elementor-widget elementor-widget-text-editor\" data-id=\"6a6f677\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tTo prevent this from happening,professional <a href=\"\/\" target=\"_blank\" rel=\"noopener\">SS pipe suppliers<\/a> strictly control the ferrite content in welds.A small amount of primary ferrite (typically 3% to 8%) acts as a solvent for impurities like sulfur and phosphorus.This prevents the formation of the dangerous liquid films mentioned earlier.If the ferrite content is too low,the risk of hot cracking in the pipe joint increases significantly.\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-455042a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"455042a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ee35372\" data-id=\"ee35372\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1c1bdf6 elementor-widget elementor-widget-heading\" data-id=\"1c1bdf6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Vulnerability of Nickel-Based Alloys<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9577e8c elementor-widget elementor-widget-text-editor\" data-id=\"9577e8c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tNickel-based alloys provide extreme corrosion resistance,but they are notoriously difficult to weld.Unlike stainless steel,these alloys solidify entirely as austenite (fully austenitic).They do not benefit from a secondary ferrite phase to &#8220;clean&#8221; the grain boundaries.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-86ddc41 elementor-widget elementor-widget-text-editor\" data-id=\"86ddc41\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-path-to-node=\"12,0,0\"><b data-path-to-node=\"12,0,0\" data-index-in-node=\"0\">Inconel (e.g., 625, 718):<br \/><\/b>These alloys contain niobium and silicon,which can form low-melting eutectic phases.<\/li><li data-path-to-node=\"12,1,0\"><b data-path-to-node=\"12,1,0\" data-index-in-node=\"0\">Incoloy (e.g., 825):<br \/><\/b>The high nickel and iron content requires precise heat control to avoid thermal tension.<\/li><li data-path-to-node=\"12,2,0\"><b data-path-to-node=\"12,2,0\" data-index-in-node=\"0\">Hastelloy (e.g., C276):<br \/><\/b>Designed for acidic environments,this alloy requires low heat input to prevent micro-cracking in the flange joint.<\/li><\/ul>\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b3b6439 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b3b6439\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-02c535f\" data-id=\"02c535f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3bc0d11 elementor-widget elementor-widget-heading\" data-id=\"3bc0d11\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Comparison of Hot Cracking Sensitivity by Metal Group<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b9f4070 elementor-widget elementor-widget-text-editor\" data-id=\"b9f4070\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table>\n<tbody>\n<tr bgcolor=\"#00a0e9\">\n<th>Metal Group<\/th>\n<th>Sensitivity Level<\/th>\n<th>Primary Cause<\/th>\n<th>Mitigation Strategy<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Austenitic Stainless<\/td>\n<td>Moderate<\/td>\n<td>High Thermal Expansion<\/td>\n<td>Maintain 3-8% Delta Ferrite<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Nickel Alloys<\/td>\n<td>High<\/td>\n<td>Fully Austenitic Solidification<\/td>\n<td>Use Low Heat Input &amp; Specific Fillers<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Duplex Stainless<\/td>\n<td>Low<\/td>\n<td>Balanced Phase Structure<\/td>\n<td>Control Cooling Rates<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Carbon Steel<\/td>\n<td>Very Low<\/td>\n<td>Low Impurity Levels<\/td>\n<td>Standard Pre-heating<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0a8b53e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0a8b53e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4def242\" data-id=\"4def242\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4326820 elementor-widget elementor-widget-heading\" data-id=\"4326820\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Factors That Increase Cracking Risk in Piping Components<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7794b4a elementor-widget elementor-widget-text-editor\" data-id=\"7794b4a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><strong>Restraint Stress:<\/strong><br \/>Thick-walled flanges provide high mechanical constraint,impeding natural shrinkage of welds and thereby increasing tensile stress.<\/li><li><strong>Impurity Levels:<\/strong><br \/>Trace amounts of sulfur, phosphorus,lead or zinc significantly increase the risk of hot cracking.<\/li><li><strong>Weld Bead Shape:<\/strong><br \/>Deep,narrow welds (high aspect ratio) are prone to inducing centerline cracks.<\/li><li><strong>Heat Input:<\/strong><br \/>Excessive heat causes metal to expand excessively,generating higher stresses during subsequent cooling.<\/li><\/ul>\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d82f8f7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d82f8f7\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4b89047\" data-id=\"4b89047\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-665959e elementor-widget elementor-widget-heading\" data-id=\"665959e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Best Practices for Avoiding Hot Cracking<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36370a4 elementor-widget elementor-widget-heading\" data-id=\"36370a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Proper Filler Metal Selection<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cfad53c elementor-widget elementor-widget-text-editor\" data-id=\"cfad53c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tAlways use filler metals with high purity.For nickel alloys,choose fillers that contain elements like manganese.Manganese reacts with sulfur to form stable compounds,reducing the liquid film at grain boundaries.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-14bb119 elementor-widget elementor-widget-heading\" data-id=\"14bb119\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Control the Heat Input<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-24ffdd2 elementor-widget elementor-widget-text-editor\" data-id=\"24ffdd2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tLower heat input reduces the size of the &#8220;mushy zone&#8221; during solidification.For stainless steel pipe fittings,use a &#8220;stringer bead&#8221; technique rather than wide weaving.This keeps the weld pool small and manageable.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-511a235 elementor-widget elementor-widget-heading\" data-id=\"511a235\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Surface Cleanliness<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-85b8700 elementor-widget elementor-widget-text-editor\" data-id=\"85b8700\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tBefore welding any stainless steel pipe,clean the surface thoroughly.Remove all oil,grease and marking paints.These substances often contain sulfur or lead,which act as catalysts for hot cracking.\t\t\t\t\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<div class=\"elementor-element elementor-element-c19a447 e-flex e-con-boxed e-con e-parent\" data-id=\"c19a447\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b06fc38 elementor-cta--layout-image-right elementor-cta--mobile-layout-image-above elementor-cta--skin-classic elementor-animated-content elementor-widget elementor-widget-call-to-action\" data-id=\"b06fc38\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"call-to-action.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<a class=\"elementor-cta\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjQ2ODEzIiwidG9nZ2xlIjpmYWxzZX0%3D\" target=\"_blank\">\n\t\t\t\t\t\t\t<div class=\"elementor-cta__content\">\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<h2 class=\"elementor-cta__title elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tFeel Free To Contact Us\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__description elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tKAYSUNS offers package solutions for piping materials such as Pipes, Fittings, Flanges, Valves, Plates, Forgings, Ingots of Stainless Steel, Duplex and Alloy Steels, all kinds of Fasteners (Bolts, Nuts, Flat Washers, Bullet Washers) and other products. We accept customized service for our products and some of them can be supplied in small quantities. If you have any questions about our company and products, please feel free to contact us.\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__button-wrapper elementor-cta__content-item elementor-content-item \">\n\t\t\t\t\t<span class=\"elementor-cta__button elementor-button elementor-size-\">\n\t\t\t\t\t\tGet QUOTE\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-cc2fdf2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cc2fdf2\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c246dff\" data-id=\"c246dff\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6276d2d elementor-widget elementor-widget-heading\" data-id=\"6276d2d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Identifying Crater Cracks at Weld Terminations<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cfacead elementor-widget elementor-widget-text-editor\" data-id=\"cfacead\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tA specific and dangerous form of hot cracking is the &#8220;crater crack.&#8221;This occurs at the end of a weld bead when the welder suddenly breaks the arc.As the molten pool shrinks rapidly without enough filler metal,a star-shaped crack forms in the center.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e6e23fd elementor-widget elementor-widget-text-editor\" data-id=\"e6e23fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In a high-pressure flange joint,a crater crack can act as a stress concentrator.Over time,this small defect can propagate through the entire wall of the stainless steel pipe.<br \/>To prevent this,Kaysuns&#8217; professionals use the &#8220;crater fill&#8221; function on modern welding machines.This feature gradually reduces the current,allowing the weld pool to solidify slowly and fully.<\/p>\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a3846e2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a3846e2\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7e693b1\" data-id=\"7e693b1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a754ccf elementor-widget elementor-widget-heading\" data-id=\"a754ccf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Chemistry of Liquation Cracking in Nickel Alloys<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e5a6f47 elementor-widget elementor-widget-text-editor\" data-id=\"e5a6f47\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tBeyond standard solidification issues,nickel-base alloys like Inconel 718 face a threat called &#8220;liquation cracking.&#8221;This happens in the Heat Affected Zone (HAZ) rather than the weld metal itself.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6288ac4 elementor-widget elementor-widget-text-editor\" data-id=\"6288ac4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Certain elements,such as niobium or boron,can melt at temperatures lower than the surrounding metal.During welding,these grain boundaries &#8220;liquify&#8221; while the rest of the pipe remains solid.The resulting microscopic fissures are often invisible to the naked eye.<br \/>Consequently,Kaysuns engineers must perform Liquid Penetrant Testing (PT) on all pipe fittings made from high-nickel alloys to ensure the HAZ is intact.<\/p>\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9ca4890 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9ca4890\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3aa4aa6\" data-id=\"3aa4aa6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8a5fe65 elementor-widget elementor-widget-heading\" data-id=\"8a5fe65\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Quality Control:Testing for Hot Cracking in the Field<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-981bd45 elementor-widget elementor-widget-text-editor\" data-id=\"981bd45\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>How can one verify whether these defects exist in a pipeline system?<br \/>A comprehensive quality control (QC) plan is the only way to ensure safety.<\/p><table><tbody><tr bgcolor=\"#00a0e9\"><th>Testing Method<\/th><th>Effectiveness for Hot Cracking<\/th><th>Application<\/th><\/tr><tr><td bgcolor=\"#05B8E4\">Visual Testing (VT)<\/td><td>Low (Only for Surface Cracks)<\/td><td>General Inspection of Pipes<\/td><\/tr><tr><td bgcolor=\"#05B8E4\">Dye Penetrant (PT)<\/td><td>High (Excellent for Surface Fissures)<\/td><td>Critical for Incoloy \/ Hastelloy Joints<\/td><\/tr><tr><td bgcolor=\"#05B8E4\">Radiographic (RT)<\/td><td>Moderate (Good for Internal Voids)<\/td><td>Full-penetration Butt Welds<\/td><\/tr><tr><td bgcolor=\"#05B8E4\">Macro-Etching<\/td><td>High (Shows Grain Structure)<\/td><td>Used in Welding Procedure Qualification (PQR)<\/td><\/tr><\/tbody><\/table>\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a115cca elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a115cca\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-28b6009\" data-id=\"28b6009\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-23dfd55 elementor-widget elementor-widget-heading\" data-id=\"23dfd55\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Troubleshooting<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65021cd elementor-widget elementor-widget-text-editor\" data-id=\"65021cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table>\n<tbody>\n<tr bgcolor=\"#00a0e9\">\n<th>Observed Symptom<\/th>\n<th>Likely Root Cause<\/th>\n<th>Solution<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Center-line Cracks<\/td>\n<td>Improper Bead Shape<\/td>\n<td>Increase Weld Width or Reduce Depth<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Cracks in the HAZ<\/td>\n<td>Excessive Heat Input<\/td>\n<td>Use Lower Amperage And Faster Travel<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Cratering At The End<\/td>\n<td>Rapid Arc Termination<\/td>\n<td>Use &#8220;crater fill&#8221; Function on The Welder<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Micro-fissures<\/td>\n<td>Surface Contamination<\/td>\n<td>Solvent Clean With Acetone Before Welding<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-461c6ef elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"461c6ef\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-fff914d\" data-id=\"fff914d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6b80e1a elementor-widget elementor-widget-heading\" data-id=\"6b80e1a\" data-element_type=\"widget\" data-e-type=\"widget\" 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