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</div> <div class="pics"> <div class="pagination"></div> </div> <div class="contents"> <p>  不锈钢弯头的表面处理有哪äº?/p> <p>  <a href="http://www.ideactivaexterior.com">不锈钢弯å¤?/a>及所有管仉™ƒ½å¿…需要进行表面处理,把弯头内外表面的氧化铁通过各种处理后ä‹É其表面光滑,再涂下防腐漆åQŒæ–¹ä¾¿è¿è¾“,也äؓ保护弯头不被腐蚀。大部分的不锈钢弯头需要焊接方式与½Ž¡é“˜qžæŽ¥åQŒäؓ提高½Ž¡äšg焊接质量åQŒç«¯éƒ¨éƒ½ä½œæˆå¡å£å½¢å¼åQŒå‡ºç•™å‡ºä¸€å®¶çš„角度åQŒä¿ç•™ä¸€ç®çš„辏V€‚弯头角度与坡口的技术要求精¼‹®åº¦å¾ˆé«˜åQŒæ¯”如:角度为多ž®‘,边的最度äؓ多少及如何控制在偏差范围之内åQŒè¡¨é¢è´¨é‡å’Œæœºæ¢°æ€§èƒ½åŸºæœ¬å’Œç®¡å­æ˜¯ä¸€æ ïLš„。äؓ了焊接方便,½Ž¡äšg与被˜qžæŽ¥çš„管子的钢种是相同的。弯头发货时需要用木箱作äؓ包装åQŒè§„格小的弯头æ€Õd¾—量不能超˜q?吨,大规格的弯头需要单独包装。另外木½Ž±åŒ…装标记要注意åQŒéœ€è¦æ¸…楚注明弯头尺寸、钢受÷€æ‰¹å—÷€åŽ‚家商标等ã€?/p> <p>  1、从½Ž¡é“材质入手åQŒä¸¥æŠŠåŽŸææ–™è´¨é‡å…Ÿë€‚对不锈钢管材及不锈钢弯½Ž¡ç®¡ä»¶è¿›è¡Œä¸¥æ ¼å…¥åœºæ£€éªŒã€‚以¼‹®ä¿ææ–™½W¦åˆè¦æ±‚。在选材上从¾læµŽæ€§å’ŒåŠŸèƒ½ä¸¤æ–¹é¢ç»¼åˆè€ƒè™‘åQŒåœ¨ç‰ÒŽ®Šçš„运行条件下åQŒå¯è€ƒè™‘选用抗腐蚀能力更强的含镍高的奥氏体不锈钢、双ç›æ€¸é”ˆé’¢ã€é’›åŠé’›åˆé‡‘、玻璃钢½{‰ã€‚选材æ—Óž¼Œé€‚当增加½Ž¡æåŠä¸é”ˆé’¢ä¸‰é€šç®¡ä»¶çš„腐蚀裕量åQŒä»¥æ»¡èƒö½Ž¡é“¾pȝ»Ÿçš„ä‹É用寿命要求ã€?/p> <p>  2、表面涂覆层保护。目前针对于环境下不锈钢弯头½Ž¡é“腐蚀的情况,除了选用抗腐蚀能力强的材质外,˜q˜å¯ä»¥é€šè¿‡ä¸é”ˆé’¢ç®¡é“表面进行涂料涂装的æ–ÒŽ³•æé«˜æŠ—腐蚀能力。针对于不锈钢管道基材表面比较光滑,常规的不锈钢异径½Ž¡é˜²è…æ¶‚料在其表面附着力比较差的问题,目前研制å‡ÞZº†ä¸€¿Uç”¨äºŽæ“v‹z‹çŽ¯å¢ƒçš„不锈钢防腐的有效涂料——环氧¾_‰æœ«æ¶‚料。该涂料是一¿Uå®Œå…¨ä¸å«æº¶å‰‚,以粉末åŞ式喷涂成膜的新型涂料ã€?/p> <p>  3、不锈钢弯头电化学保护方法主要有讄¡½®ä¿æŠ¤å™¨ä¿æŠ¤ã€é˜´æžä¿æŠ¤å’Œé˜Ïxžä¿æŠ¤æ–ÒŽ³•ã€?)保护器保护方法是指将甉|žç”µåŠ¿è¾ƒä½Žçš„金属与被保护金属连接在一èµøP¼Œå½¢æˆåŽŸç”µæ± ã€‚电极电势较低的金属作äؓé˜Ïxžè¢«æº¶è§£ï¼Œè¢«ä¿æŠ¤çš„金属作äؓ阴极避免了腐蚀ã€?)阴极保护æ–ÒŽ³•æ˜¯æŒ‡å¤–加直流甉|ºåQŒå°†è¢«ä¿æŠ¤é‡‘属接到负极上作äؓ阴极åQŒä‹É得被保护不锈钢法兰金属的电位向负调节åQŒè¿›å…¥E-pH囄¡š„不腐蚀åŒ?ž®†åºŸæ—§é‡‘属接到正极上åQŒä½œä¸ºé˜³æžä‹É得废旧金属腐蚀而保护阴极的æ–ÒŽ³•ã€?)é˜Ïxžä¿æŠ¤æ–ÒŽ³•æ˜¯æŒ‡é‡‡ç”¨å¤–加直流甉|ºåQŒå°†è¢«ä¿æŠ¤é‡‘属接到正极上最为阳极,甉|žç”µåŠ¿å‘正方向¿UÕdŠ¨(即阳极极åŒ?åQŒè¿›å…¥E-pH囄¡š„钝化区,使被保护金属“钝化”而得åˆîC¿æŠ¤ã€?/p> </div> </div> <br /> <div class="other clearfix"> <ul class="left"> <p>上一æ? <a href="/NEWS/3498.html">大型法兰注意事项</a> </p> <p> 下一æ? <a href="/NEWS/3628.html">冲压弯头成型æ–ÒŽ³•</a></p> </ul> </div> </div> </div> </div> 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