{"id":804,"date":"2025-06-27T13:18:21","date_gmt":"2025-06-27T13:18:21","guid":{"rendered":"https:\/\/delta-heat-services.com\/heat-treatment\/"},"modified":"2026-02-12T12:10:47","modified_gmt":"2026-02-12T12:10:47","slug":"heat-treatment","status":"publish","type":"page","link":"https:\/\/delta-heat-services.com\/en\/heat-treatment\/","title":{"rendered":"Heat Treatment"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row row_height_percent=&#8221;0&#8243; override_padding=&#8221;yes&#8221; h_padding=&#8221;2&#8243; top_padding=&#8221;0&#8243; bottom_padding=&#8221;0&#8243; back_color=&#8221;color-jevc&#8221; back_image=&#8221;319&#8243; back_image_auto=&#8221;yes&#8221; overlay_color=&#8221;color-100911&#8243; overlay_alpha=&#8221;100&#8243; gutter_size=&#8221;3&#8243; column_width_percent=&#8221;100&#8243; shift_y=&#8221;0&#8243; z_index=&#8221;0&#8243; content_parallax=&#8221;0&#8243; uncode_shortcode_id=&#8221;120507&#8243; back_color_type=&#8221;uncode-palette&#8221; el_class=&#8221;home-header&#8221; overlay_color_type=&#8221;uncode-palette&#8221; css=&#8221;.vc_custom_1751563979121{padding-top: 80px !important;padding-bottom: 80px !important;}&#8221;][vc_column column_width_percent=&#8221;100&#8243; gutter_size=&#8221;2&#8243; style=&#8221;dark&#8221; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;0&#8243; mobile_width=&#8221;0&#8243; width=&#8221;1\/2&#8243; uncode_shortcode_id=&#8221;160366&#8243;][vc_column_text uncode_shortcode_id=&#8221;107211&#8243;]<span><span><a href=\"https:\/\/delta-heat-services.com\/en\/\">Home<\/a><\/span><\/span>[\/vc_column_text][vc_column_text uncode_shortcode_id=&#8221;249544&#8243;]<\/p>\n<h1>Reliable <strong>Heat Treatments<\/strong> Tailored to Your Needs<\/h1>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243;][\/vc_column][\/vc_row][vc_row row_height_percent=&#8221;0&#8243; override_padding=&#8221;yes&#8221; h_padding=&#8221;2&#8243; top_padding=&#8221;0&#8243; bottom_padding=&#8221;0&#8243; overlay_alpha=&#8221;50&#8243; gutter_size=&#8221;3&#8243; column_width_percent=&#8221;100&#8243; shift_y=&#8221;0&#8243; z_index=&#8221;0&#8243; content_parallax=&#8221;0&#8243; uncode_shortcode_id=&#8221;702902&#8243; css=&#8221;.vc_custom_1758194422751{padding-top: 100px !important;padding-bottom: 100px !important;}&#8221;][vc_column column_width_percent=&#8221;100&#8243; gutter_size=&#8221;3&#8243; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_visibility=&#8221;yes&#8221; medium_width=&#8221;0&#8243; mobile_visibility=&#8221;yes&#8221; mobile_width=&#8221;0&#8243; width=&#8221;1\/6&#8243; uncode_shortcode_id=&#8221;158707&#8243;][\/vc_column][vc_column column_width_percent=&#8221;100&#8243; align_horizontal=&#8221;align_center&#8221; gutter_size=&#8221;3&#8243; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;7&#8243; mobile_width=&#8221;7&#8243; width=&#8221;4\/6&#8243; uncode_shortcode_id=&#8221;399203&#8243;][vc_column_text text_lead=&#8221;yes&#8221; uncode_shortcode_id=&#8221;516431&#8243;]Delta Heat Services specializes in on-site heat treatments (also known as heat treatment). With our flexible approach and high-quality service, we can execute large turnarounds, maintenance, and new construction projects.[\/vc_column_text][vc_button button_color=&#8221;color-jevc&#8221; border_width=&#8221;0&#8243; scale_mobile=&#8221;no&#8221; link=&#8221;url:https%3A%2F%2Fdelta-heat-services.com%2Fen%2Fcontact-us%2F|title:Neem%20contact%20op&#8221; button_color_type=&#8221;uncode-palette&#8221; uncode_shortcode_id=&#8221;166418&#8243;]Contact us[\/vc_button][\/vc_column][vc_column column_width_percent=&#8221;100&#8243; gutter_size=&#8221;3&#8243; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_visibility=&#8221;yes&#8221; medium_width=&#8221;0&#8243; mobile_visibility=&#8221;yes&#8221; mobile_width=&#8221;0&#8243; width=&#8221;1\/6&#8243; uncode_shortcode_id=&#8221;178785&#8243;][\/vc_column][\/vc_row][vc_row row_height_percent=&#8221;0&#8243; override_padding=&#8221;yes&#8221; h_padding=&#8221;2&#8243; top_padding=&#8221;0&#8243; bottom_padding=&#8221;0&#8243; overlay_alpha=&#8221;50&#8243; gutter_size=&#8221;4&#8243; column_width_percent=&#8221;100&#8243; shift_y=&#8221;0&#8243; z_index=&#8221;0&#8243; inverted_device_order=&#8221;yes&#8221; content_parallax=&#8221;0&#8243; uncode_shortcode_id=&#8221;677653&#8243; css=&#8221;.vc_custom_1758194435734{padding-top: 50px !important;padding-bottom: 120px !important;}&#8221;][vc_column column_width_percent=&#8221;100&#8243; position_vertical=&#8221;middle&#8221; gutter_size=&#8221;3&#8243; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;0&#8243; mobile_width=&#8221;0&#8243; width=&#8221;1\/2&#8243; uncode_shortcode_id=&#8221;158667&#8243;][vc_column_text uncode_shortcode_id=&#8221;121370&#8243;]<\/p>\n<h4>Heat treatment<\/h4>\n<h2>Preheating &amp; Post-treatment<\/h2>\n<p data-start=\"53\" data-end=\"290\">Preheating during welding slows down the cooling rate of the base material. This allows for more gradual shrinkage and expansion of the weld zone, reducing the risk of cracking and ensuring better material quality.<\/p>\n<p data-start=\"292\" data-end=\"735\" data-is-last-node=\"\" data-is-only-node=\"\">Stress relieving is performed after welding to improve the properties of the weld and the heat affected zone. This is also known as post-weld heat treatment (PWHT). Depending on the material and application, appropriate procedures are followed according to applicable standards. High temperatures during welding cause shrinkage stresses upon cooling. 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