{"id":3876,"date":"2021-04-19T09:02:56","date_gmt":"2021-04-19T09:02:56","guid":{"rendered":"https:\/\/www.wldsteel.com\/?p=3876"},"modified":"2021-04-19T09:03:25","modified_gmt":"2021-04-19T09:03:25","slug":"whats-the-caustic-cracking-in-the-steam-pipeline","status":"publish","type":"post","link":"https:\/\/www.wldsteel.com\/ko\/whats-the-caustic-cracking-in-the-steam-pipeline\/","title":{"rendered":"\uc99d\uae30 \ud30c\uc774\ud504 \ub77c\uc778\uc758 \ubd80\uc2dd\uc131 \uade0\uc5f4\uc774\ub780 \ubb34\uc5c7\uc785\ub2c8\uae4c?"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\uac00\uc131 \ucde8\ud654\ub77c\uace0\ub3c4 \ud558\ub294 \uac00\uc131 \uade0\uc5f4\uc740 \uc778\uc7a5 \uc751\ub825\uacfc \ubd80\uc2dd\uc131 \ub9e4\uccb4\uc758 \uacb0\ud569 \uc791\uc6a9\uc73c\ub85c \uc778\ud574 \uc54c\uce7c\ub9ac\uc131 \uc6a9\uc561\uc5d0\uc11c \uae08\uc18d\uc774 \uade0\uc5f4\ub418\ub294 \uac83\uc73c\ub85c, SCC\uc758 \ud55c \uc720\ud615\uc785\ub2c8\ub2e4. \uc555\ub825 \ubcf4\uc77c\ub7ec\uc758 \uc6d0\uc778 \uade0\uc5f4\uc740 \uc8fc\ub85c \uc99d\uae30\uac00 \ubc18\ubcf5\uc801\uc73c\ub85c \uc99d\ubc1c \ubc0f \uc751\ucd95\ub418\uac70\ub098 \uac00\uc131 \uc18c\ub2e4\uc640 \uc811\ucd09\ud558\ub294 \ubd80\ud488\uc5d0\uc11c \ubc1c\uc0dd\ud558\uba70 \ud0c4\uc18c\uac15, \uc800 \ud569\uae08\uac15, \ud398\ub77c\uc774\ud2b8 \uac15 \ubc0f \uc624\uc2a4\ud14c \ub098\uc774\ud2b8 \uacc4 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \uc7a5\ube44\uac00 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubcf4\uc77c\ub7ec \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uade0\uc5f4 \ud3ed\ubc1c \uc0ac\uace0\uac00 \uc790\uc8fc \ubc1c\uc0dd\ud558\uba70, \uc5fc\uc18c-\uc54c\uce7c\ub9ac \ud654\ud559 \uacf5\uc7a5, \uc81c\uc9c0 \uacf5\uc7a5 \ubc0f \uc6d0\uc790\ub825 \uc0b0\uc5c5\uc758 \uc804\ud574 \uc54c\ub8e8\ubbf8\ub284 \uae30\uc5c5\uc758 \uc624\ud1a0\ud074\ub7a9, \ud3d0\uc5f4 \ud68c\uc218 \uc2dc\uc2a4\ud15c \ubc0f Al2O3 \uc99d\ubc1c\uae30\uc5d0\uc11c\ub3c4 Na+ \ub18d\ub3c4\ub85c \uc778\ud55c \uade0\uc5f4 \ud3ed\ubc1c \uc0ac\uace0\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc218\uc0b0\ud654\ub098\ud2b8\ub968 \ub18d\ub3c4\uac00 5% \uc774\uc0c1\uc778 \uacbd\uc6b0 \ud0c4\uc18c\uac15 \ubc0f \uc800 \ud569\uae08\uac15 \uc99d\uae30 \ud30c\uc774\ud504 \ub77c\uc778\uc740 \ubd80\uc2dd\uc131 \uade0\uc5f4\uc774 \ubc1c\uc0dd\ud560 \uac00\ub2a5\uc131\uc774 \uac70\uc758 \uc5c6\uc73c\uba70 \uc54c\uce7c\ub9ac \uc751\ub825 \ubd80\uc2dd\uc740 \uc77c\ubc18\uc801\uc73c\ub85c 50 ~ 80 \u2103 \uc774\uc0c1, \ud2b9\ud788 \uace0\uc628 \uc601\uc5ed\uc758 \ube44\ub4f1\uc810 \uadfc\ucc98, \uc54c\uce7c\ub9ac \ub18d\ub3c4 40% ~ 50%\uc5d0\uc11c \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uc774\ub860\uc5d0 \ub530\ub974\uba74, \uad6d\uc18c NaOH\uc758 \uc9c8\ub7c9 \ubd84\uc728\uc774 10%\ubcf4\ub2e4 \ud06c\uba74 \uae08\uc18d\uc758 \ubcf4\ud638 \uc0b0\ud654\ub9c9\uc774 \uc6a9\ud574\ub418\uace0 \ub9e4\ud2b8\ub9ad\uc2a4 \uae08\uc18d\uc774 \uc54c\uce7c\ub9ac\uc640 \ub354 \ubc18\uc751\ud558\uc5ec \ub290\uc2a8\ud558\uace0 \ub2e4\uacf5\uc131 \uc790\uae30 \ubd80\uc2dd\uc131 \uc0b0\ud654\ubb3c\uc744 \ud615\uc131\ud558\uace0 \uc218\uc6a9\uc561\uc740 \uc54c\uce7c\ub9ac\uc131\uc785\ub2c8\ub2e4. \ubcf4\uc77c\ub7ec \ub610\ub294 \uc5f4\uad50\ud658 \uae30\uc758 \ubb3c\uc5d0 10 ~ 20mg-L-1 NaOH\uac00 \ud3ec\ud568\ub418\uc5b4\uc788\ub294 \ud55c \uad6d\ubd80\uc801\uc73c\ub85c \ubc18\ubcf5\ub418\ub294 \uc99d\ubc1c\uc740 \uce68\uc804\ubb3c \uc544\ub798 \ub610\ub294 \ud2c8\uc0c8\uc5d0 \uc54c\uce7c\ub9ac \ub18d\ub3c4\ub97c \uc720\ubc1c\ud558\uc5ec \uad6d\ubd80\uc801 \uc778 \uc54c\uce7c\ub9ac \ubd80\uc2dd\uc744 \uc720\ubc1c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ubd80\uc2dd\uc131 \uade0\uc5f4\uc758 \ubbfc\uac10\ub3c4\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce58\ub294 \uc694\uc778<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ubd80\uc2dd\uc131 \uade0\uc5f4\uc740 \uc6a9\uc811 \uc870\uc778\ud2b8 \ubd80\ud488\uacfc \uac19\uc774 \uc794\ub958 \uc751\ub825\uc774 \ub192\uc740 \uc54c\uce7c\ub9ac \ud568\uc720 \uc561\uccb4\uc758 \ub18d\ucd95 \ubd80\ubd84\uc5d0\uc11c \ubc1c\uc0dd\ud558\uae30 \uc26c\uc6b0\uba70, \uc774\ub7ec\ud55c \uc720\ud615\uc758 SCC\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc785\uacc4\uac00 \ubc1c\uc0dd\ud558\uace0 \uade0\uc5f4\uc774 \uc0b0\ud654\ubb3c\ub85c \ucc44\uc6cc\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud0c4\uc18c\uac15\uc758 \uc54c\uce7c\ub9ac\uc131 \ubd80\uc11c\uc9c0\uae30 \uc26c\uc6b4 \uade0\uc5f4 <a href=\"https:\/\/www.wldsteel.com\/ko\/%ec%a0%9c%ed%92%88-%ec%b9%b4%ed%85%8c%ea%b3%a0%eb%a6%ac\/iso-api-line-pipe\/\">\uc99d\uae30 \ud30c\uc774\ud504 \ub77c\uc778<\/a> \uc0b0\ud654\ubb3c\uacfc \ud568\uaed8 \ubbf8\uc138\ud55c \uc785\uacc4 \uade0\uc5f4\ub85c \ub098\ud0c0\ub0a9\ub2c8\ub2e4. \uc54c\uce7c\ub9ac\uc758 \ucde8\uc131\uc744 \uacb0\uc815\ud558\ub294 \uc8fc\uc694 \uc694\uc778\uc5d0\ub294 \uc54c\uce7c\ub9ac \ub18d\ub3c4, \uae08\uc18d \uc628\ub3c4, \uc778\uc7a5 \uc751\ub825 \ub4f1 \uba87 \uac00\uc9c0\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uc2e4\ud5d8\uc5d0 \ub530\ub974\uba74 \uc77c\ubd80 \uac00\uc131 \uade0\uc5f4\uc740 \uba70\uce60 \ub0b4\uc5d0 \ubc1c\uc0dd\ud558\uc9c0\ub9cc \ub300\ubd80\ubd84\uc740 1\ub144 \uc774\uc0c1 \ub178\ucd9c\ub418\uc5c8\uc744 \ub54c \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uc54c\uce7c\ub9ac \ub18d\ub3c4\uc640 \uc628\ub3c4\ub97c \ub192\uc774\uba74 \uade0\uc5f4 \uc18d\ub3c4\ub97c \uac1c\uc120\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc911\uac04\u00a0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uac00\uc131 \uade0\uc5f4\uc740 \ub18d\ucd95 \uc7bf\ubb3c\uc5d0\uc11c \uace0\uc628\uc5d0\uc11c \ubc1c\uc0dd\ud558\ub294 \ubd80\uc2dd\uc744 \ub9d0\ud569\ub2c8\ub2e4. \uac00\uc131\uc18c\ub2e4\uc758 \uc9c8\ub7c9 \ube44\uc728\uc774 5%\ubcf4\ub2e4 \ub0ae\uc73c\uba74 \uac00\uc131 \uade0\uc5f4\uc774 \ubc1c\uc0dd\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc774 \ub18d\ucd95 \uc7bf\ubb3c\uc740 \uc791\uc5c5 \ub9e4\uccb4\uac00 \ub420 \uc218\ub3c4 \uc788\uace0 \uc791\uc5c5 \uc911\uc5d0 \ubaa8\uc77c \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. \uac00\uc131 \uc18c\ub2e4\uc758 \ub18d\ub3c4\uac00 \ub192\uc744\uc218\ub85d \uac00\uc131 \uade0\uc5f4\uc758 \uac10\ub3c4\uac00 \ucee4\uc9c0\uba70, \uc774\ub294 \uc54c\uce7c\ub9ac \ub18d\ub3c4\uc640 \uad00\ub828\uc774\uc788\uc744\ubfd0\ub9cc \uc544\ub2c8\ub77c \uc6a9\uc561\uc758 \uc628\ub3c4\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc628\ub3c4<\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignleft size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.wldsteel.com\/wp-content\/uploads\/2021\/04\/Stress-fracture-of-steam-pipeline.png\" alt=\"\" class=\"wp-image-3877\" width=\"264\" height=\"259\" srcset=\"https:\/\/www.wldsteel.com\/wp-content\/uploads\/2021\/04\/Stress-fracture-of-steam-pipeline.png 350w, https:\/\/www.wldsteel.com\/wp-content\/uploads\/2021\/04\/Stress-fracture-of-steam-pipeline-300x294.png 300w, https:\/\/www.wldsteel.com\/wp-content\/uploads\/2021\/04\/Stress-fracture-of-steam-pipeline-36x36.png 36w\" sizes=\"auto, (max-width: 264px) 100vw, 264px\" \/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\uc800\ud0c4\uc18c \uc99d\uae30 \ubc30\uad00\uc6a9 \uac15\uc7ac\uc758 \uade0\uc5f4 \ud30c\uad34 \uc2dc\uac04\uc740 \uc751\ub825\uc774 \uac10\uc18c\ud568\uc5d0 \ub530\ub77c \uc99d\uac00\ud569\ub2c8\ub2e4. \uc794\ub958 \uc18c\uc131 \ubcc0\ud615\uc774 \uac00\uc7a5 \ud070 \uc5f4 \uc601\ud5a5 \uc601\uc5ed\uc758 \uae08\uc18d, \uc989 \uc6a9\uc811 \uacf5\uc815\uc5d0\uc11c 500~850\u2103\ub85c \uac00\uc5f4\ub41c \uae08\uc18d\uc774 \uac00\uc7a5 \ud070 SCC \uacbd\ud5a5\uc744 \ubcf4\uc774\ub294 \uac83\uc73c\ub85c \ub098\ud0c0\ub0ac\uc2b5\ub2c8\ub2e4. \uc54c\uce7c\ub9ac \uc124\ube44\uc758 \uc720\uc9c0\ubcf4\uc218\uc5d0\uc11c\ub294 \uc6a9\uc811 \uc794\ub958 \uc751\ub825\uacfc \ubbf8\uc138 \uad6c\uc870 \uc751\ub825\uc774 \uac00\uc7a5 \ud070 \uc54c\uce7c\ub9ac \uc6a9\uc561\uc5d0\uc11c \uc6a9\uc811 \uc2dc \uc7ac\uacb0\uc815 \uc601\uc5ed\ubcf4\ub2e4 \uc57d\uac04 \ub0ae\uc740 550\u2103 \uc774\uc0c1\uc758 \uc628\ub3c4\uc5d0\uc11c \uac00\uc5f4\ub41c \uae08\uc18d\uc774 \uac00\uc7a5 \ud070 \uade0\uc5f4 \uacbd\ud5a5\uc744 \ubcf4\uc774\ub294 \uac83\uc73c\ub85c \ub098\ud0c0\ub0ac\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uae08\uc18d \uc694\uc18c<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc800\ud0c4\uc18c\uac15\uc758 \uac00\uc131 \uade0\uc5f4 \ubc0f \uc9c8\uc0b0\uc5fc \ucde8\uc131\uc740 \uc785\uc790\ub97c \ub530\ub77c \ud30c\uc1c4\ub418\uae30 \ub54c\ubb38\uc5d0 \uc774\ub7ec\ud55c \ucde8\uc131\uc758 \ubbfc\uac10\ub3c4\ub294 \uc785\uc790 \uacbd\uacc4\uc5d0\uc11c C, N \ubc0f \uae30\ud0c0 \uc6d0\uc18c\uac00 \ubd84\ub9ac\ub418\uc5b4 \ubc1c\uc0dd\ud55c\ub2e4\ub294 \uc774\ub860\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc800\ud0c4\uc18c \uc99d\uae30 \ud30c\uc774\ud504 \ub77c\uc778 \uac15\uc7ac\uc758 \ubd80\uc2dd\uc131 \uade0\uc5f4\uc744 \uc77c\uc73c\ud0a4\ub294 \ud654\ud559 \uc6d0\uc18c\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc785\uc790 \uacbd\uacc4\uc5d0\uc11c C\uc640 N\uc774 \ubd84\ub9ac\ub418\uba74 \uac00\uc131 \uade0\uc5f4 \uac10\ub3c4\uac00 \uc99d\uac00\ud569\ub2c8\ub2e4;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubbf8\ub7c9 \uc6d0\uc18c\uc758 \uc601\ud5a5\uc740 \uc785\uc790 \uacbd\uacc4\uc5d0\uc11c S, P, As \ubc0f \uae30\ud0c0 \ubd88\uc21c\ubb3c\uc758 \ubd84\ub9ac\ub85c \uc778\ud574 \uc54c\uce7c\ub9ac \ucde8\uc131 \uac10\ub3c4\ub97c \uc99d\uac00\uc2dc\ud0b5\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uc18c\ub7c9\uc758 La, Al, Ti \ubc0f V\ub294 \uc785\uc790 \uacbd\uacc4\uc5d0\uc11c \uc720\ud574\ud55c \ubd88\uc21c\ubb3c\uc758 \ubd84\ub9ac\ub97c \uc904\uc5ec \uc54c\uce7c\ub9ac \ucde8\uc131 \uac10\ub3c4\ub97c \uac10\uc18c\uc2dc\ud0a4\uae30 \ub54c\ubb38\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc785\uc790 \ud06c\uae30\uac00 \ucee4\uc9c8\uc218\ub85d \ubd80\uc2dd\uc131 \uade0\uc5f4\uc774 \uc99d\uac00\ud569\ub2c8\ub2e4;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5f4\ucc98\ub9ac. \uad6c\uc0c1\ud654 \ud6c4 \uac15\ucca0\uc758 \ubd80\uc2dd\uc131 \uade0\uc5f4 \ubbfc\uac10\ub3c4\ub294 \uc815\uaddc\ud654 \uc0c1\ud0dc\ubcf4\ub2e4 \ud06c\uba70, \uc774\ub294 \ud0c4\ud654\ubb3c\uc758 \uad6c\uc0c1\ud654 \uacfc\uc815\uc5d0\uc11c \uc785\uc790 \uacbd\uacc4 \ubd84\ub9ac\uac00 \uc99d\uac00\ud558\uae30 \ub54c\ubb38\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc7a0\uc7ac\ub825\u00a0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub053\ub294 35%~40% NaOH \uc6a9\uc561\uc5d0\uc11c \uc800\ud0c4\uc18c \uc99d\uae30 \ubc30\uad00\uac15\uc758 \uac00\uc131 \uade0\uc5f4 \ubbfc\uac10 \uc804\uc704\ub294 -1150~800mV(SCE)\uc774\uba70, \ub053\ub294\uc810(120\u2103)\uc5d0\uc11c \uac00\uc131 \uade0\uc5f4 \uc804\uc704\ub294 -700mV(SCE) \ubc94\uc704\uc5d0\uc11c \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uc784\uacc4 \uc804\uc704\uc5d0\uc11c\ub294 \uc2dc\ub8cc\uc758 \ub2e8\uba74 \uc218\ucd95\uc774 \ud06c\uac8c \uac10\uc18c\ud569\ub2c8\ub2e4. X-\uc120 \uad6c\uc870 \ubd84\uc11d \uacb0\uacfc \uc2dc\ub8cc \ud45c\uba74\uc5d0 Fe3O4 \ubcf4\ud638\ub9c9\uc774 \ud615\uc131\ub418\uc5b4 \uc788\uc74c\uc744 \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>Caustic&nbsp;Cracking, also known as caustic embrittlement, is the metals cracking&nbsp;in alkaline solutions due to the combined action of tensile stress and corrosive media,&nbsp;is a type of SCC.&nbsp;The cause cracking&nbsp;of pressure boiler mainly occurs in the parts where steam is repeatedly evaporated and condensed or in contact with caustic soda, which may be carbon steel, low [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3876","post","type-post","status-publish","format-standard","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What\u2019s the Caustic Cracking in the steam pipeline?<\/title>\n<meta name=\"description\" content=\"When sodium hydroxide concentration is more than 5%, carbon steel and low alloy steel steam pipelines are almost likely to produce caustic crackings, alkali stress corrosion generally occurs at more than 50~80\u2103.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wldsteel.com\/ko\/whats-the-caustic-cracking-in-the-steam-pipeline\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What\u2019s the Caustic Cracking in the steam pipeline?\" \/>\n<meta property=\"og:description\" content=\"When sodium hydroxide concentration is more than 5%, carbon steel and low alloy steel steam 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