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style="font-size:16px;">焊接应力与å˜å½¢å¯¹ç„Šä»¶çš„è´¨é‡æœ‰ä¸¥å³»çš„å½±å“,在焊接进程中应采纳一些办法使其尽é‡å‡å°ï¼Œä»¥è¿›æ­¥ç„ŠæŽ¥è´¨é‡ã€?/span> </p> <p> <span style="font-size:16px;">一ã€?/span><span style="font-size:16px;">ç¦å·žç£ç„ŠæžªåŽ‚å®?/span><span style="font-size:16px;">é¿å…å’Œå‡å°ç„ŠæŽ¥åº”åŠ›çš„åŠžæ³•</span> </p> <p> <span style="font-size:16px;">é¿å…å’Œå‡å°ç„ŠæŽ¥åº”åŠ›ï¼Œåº”ä»Žè§„åˆ’å’Œå·¥è‰ºä¸¤æ–¹é¢æ¥åŠ ä»¥æ“æŽ§å’Œè°ƒç†ï¼Œä»Žè§„划上应力求尽é‡å‡å°ç»“æž„çš„ç„Šç¼æ•°é‡ï¼›é¿å…焊ç¼è¿‡äºŽé›†ä¸­ï¼›è¿˜è¦é€‰ç”¨åˆšæ€§è¾ƒå°çš„æŽ¥å¤´å½¢å¼ã€‚è€Œç„Šå·¥ä¸»è¦æ˜¯ä»Žå·¥è‰ºä¸Šé‡‡çº³å¦‚下办法ã€?/span> </p> <p> <span style="font-size:16px;">1. 选用åˆç†çš„焊接次åº?/span> </p> <p> <span style="font-size:16px;">在一个焊接结构中,焊接次åºå¯¹ç„ŠæŽ¥å‰©ä½™åº”åŠ›çš„å·¨ç»†æœ‰å¾ˆå¤§å½±å“。如对接焊ç¼ä¸Žè§’焊ç¼ç©¿æ’的结构,应先焊对接焊ç¼ï¼Œä½¿å…¶èƒ½è‡ªåœ¨ç¼©çŸ­ï¼Œå†ç„Šè§’焊ç¼ã€‚如对大é¢ç§¯å¹³æ¿æ‹¼æŽ¥ï¼Œæ­£ç¡®çš„æ¬¡åºæ˜¯å…ˆç„ŠçŸ­ç„Šç¼ï¼Œç„¶åŽç„Šé•¿ç„Šç¼ã€?/span> </p> <p> <span style="font-size:16px;">2.下é™ç„Šç¼çš„æ‹˜è°¨åº¦</span> </p> <p> <span style="font-size:16px;">在平æ¿ä¸Šé•¶æ¿çš„å°é—­ç„ŠæŽ¥æ—¶æ‹˜è°¨åº¦è¾ƒå¤§ï¼Œä¸ºå‡å°ç„ŠæŽ¥åº”åŠ›ï¼Œåº”è®¾æ³•å‡å°æ‹˜è°¨åº¦ã€‚将平æ¿å­”的边缘åšé€‚当的翻边,焊接时焊ç¼çš„缩短能将翻边拉平,而å‡å°åº”力。或将镶å—压凹,预留缩短余é‡ã€‚这两ç§åŠžæ³•æœèƒ½æœ‰æ•ˆåœ°å‡å°ç„ŠæŽ¥åº”力ã€?/span> </p> <p> <span style="font-size:16px;">3.</span><span style="font-size:16px;">ç¦å·žç£ç„ŠæžªåŽ‚å®?/span><span style="font-size:16px;">加热å‡åº”区法</span> </p> <p> <span style="font-size:16px;">焊接时加热那些阻ç¢ç„ŠæŽ¥åŒºè‡ªåœ¨ä¼¸ç¼©çš„éƒ¨ä½ï¼ˆç§°â€œå‡åº”区â€ï¼‰ã€‚加热å‡åº”区的关键是找准“å‡åº”区â€ï¼Œä¸ç„¶å°±é€‚å¾—å…¶å。加热å‡åº”区法一个的特点是ä¸åœ¨ç„Šç¼é‚»è¿‘åŠ çƒ­ï¼Œè€Œæ˜¯è¦æ‰¾ä¸€ä¸ªèƒ½æ¶ˆé™¤ç„Šç¼åº”力的方ä½åŠ çƒ­ã€‚è¿™ä¸ªæ–¹ä½æ‰¾çš„æ˜¯å¦æ­£ç¡®ï¼Œåœ¨åŠ çƒ­çš„æ—¶å€™ä¾¿å¯éªŒè¯ï¼šç„Šå‰åŠ çƒ­æ—¶è£‚çº¹å¤„çš„ç¼éš™å¢žå¤§ï¼Œåˆ™æ–¹ä½é€‰æ‹©æ­£ç¡®ï¼›ä¸ç„¶ä¾¿ä¸æ­£ç¡®ã€‚è¿™ç§åŠžæ³•åœ¨ç„Šè¡¥é“¸é“时应用比较多ã€?/span> </p> <p> <span style="font-size:16px;">4.锤击</span> </p> <p> <span style="font-size:16px;">锤击是在焊åŽç„Šç¼æœªå†·å´ä¹‹å‰ï¼Œç”¨å°é”¤æ•²å‡»ç„Šç¼ï¼Œä½¿éŸ©ç²‰æ¨ªå‘延展,以抵消横å‘缩短。锤击的温度ä»?00~500℃为宜,低于500℃ä¸è¡Œå†æŒç»­é”¤å‡»ã€‚此办法适用于强度高ã€å¡‘形差的资料ã€?/span> </p> <p> <span style="font-size:16px;">5.热处ç?/span> </p> <p> <span style="font-size:16px;">热处ç†ç®€ç›´èƒ½å…¨éƒ¨æ¶ˆé™¤ç„Šç¼çš„内应力。其办法有整体热处ç†å’Œéƒ¨åˆ†çƒ­å¤„ç†ã€‚便®ç„Šä»¶çš„æè´¨ä¸åŒï¼Œå·¥ä½œæ¡ä»¶ä¸åŒï¼Œåˆ™çƒ­å¤„ç†æ„图ä¸åŒï¼Œç„ŠåŽçƒ­å¤„ç†ä¸€èˆ¬æœ‰é€€ç«ã€æ­£ç«å’Œé«˜æ¸©å›žç«ç­‰å¤„ç†åŠžæ³•ï¼Œå…³äºŽé«˜å¼ºåº¦èµ„æ–™å¤šç”¨é«˜æ¸©å›žç«ã€‚如下表列出常用金属资料消除应力的回ç«çš„æ¸©åº¦ï¼Œä¾›çƒ­å¤„ç†æ—¶å‚考ã€?/span> </p> <p> <span style="font-size:16px;">焊åŽçƒ­å¤„ç†å¿…须焊åŽå½“å³è¿›è¡Œï¼Œå°¤å…¶æ˜¯é«˜å¼ºèµ„料,档焊件冷å´ä¸‹æ¥å°±æˆ–许å‘作焊接裂纹,若ä¸åŠæ—¶å¤„ç†ä¾¿ä¼šå‘作裂纹。气焊件都是å°ä»¶ï¼Œå¦‚果需è¦è¿›è¡Œçƒ­å¤„ç†ï¼Œå‡å¯è¿›è¡Œæ•´ä½“热处ç†ã€‚为了确ä¿åŠ çƒ­æ—¶ä¸å‘作应力,热处ç†åŠ çƒ­é€Ÿåº¦åº”æ“æŽ§åœ¨200â„?h,ä¿æ¸©æ—¶åˆ»è§†å·¥ä»¶åŽšåº¦è€Œå®šï¼Œä¸€èˆ¬æŒ‰æ¯linï¼?5.4mm)厚åº?h核算,然åŽåœ¨ç©ºæ°”中冷å´ï¼Œå…³äºŽé€€ç«è¾ƒéš¾çš„高åˆé‡‘钢也å¯ä»¥éšç‚‰å†·å´ã€?/span> </p> <p> <span style="font-size:16px;">二ã€?/span><span style="font-size:16px;">ç¦å·žç£ç„ŠæžªåŽ‚å®?/span><span style="font-size:16px;">é¿å…å’Œå‡å°ç„пޥå˜å½¢çš„办法</span> </p> <p> <span style="font-size:16px;">å‡å°ç„пޥå˜å½¢åº”é¦–å…ˆä»Žè§„åˆ’ä¸Šç€æ‰‹ï¼Œå³åœ¨è§„划焊接结构时,尽é‡é€‰æ‹©å°çš„焊ç¼å°ºå¯¸å’Œå¡å£å½¢å¼ï¼›å°½é‡å‰Šå‡ç„Šç¼çš„æ•°é‡ï¼›åˆç†å®‰æŽ’ç„Šç¼æ–¹ä½ï¼›æœ‰åˆ©äºŽå‡å°ç„пޥå˜å½¢ã€‚在工艺上还应采纳如下办法ã€?/span> </p> <p> <span style="font-size:16px;">1.选用åˆç†çš„装焊次åº?/span> </p> <p> <span style="font-size:16px;">如两æ¡é•¿ç›´å¯¹ç§°ç„Šç¼ï¼Œä¸ç®¡å…ˆç„Šå“ªä¸€æ¡éƒ½ä¼šå‘作曲折å˜å½¢ï¼Œåº”该两焊ç¼ä¸€èµ·ç„ŠæŽ¥ï¼Œå¦‚æžœåšä¸åˆ°ï¼Œå¯ä»¥åˆ†æ®µç„ŠæŽ¥ã€‚æ­¤ä¾‹ä¸ºä¸€ä¸ªç®€ç•¥çš„æž„ä»¶ï¼Œå…¶å®žå…³äºŽä¸€äº›å¤æ‚结构,选用åˆç†çš„装焊次åºå…³äºŽå‡å°ç„пޥå˜å½¢ä½œç”¨æ˜¯å¾ˆå¤§çš„。比方桥å¼èµ·é‡æœºçš„箱形æ¢è…¹æ¿ä¸Žä¸Šç›–æ¿çš„焊接,因为两æ¡ç„Šç¼åè½ä¸Šç›–æ¿çš„两边缘上,è¦ä¸¤æ¡ç„Šç¼ä¸€èµ·ç„ŠæŽ¥ã€‚ä¸ç„¶ä¸€定å‘å…ˆç„Šçš„ç„Šç¼æ–¹å‘曲折。如果æ¡ä»¶ä¸å…许,åªèƒ½åˆ†æ®µç„ŠæŽ¥ã€‚è¿™æ ·ä¸åªå¯ä»¥å‡å°ç„ŠæŽ¥åº”åŠ›ï¼Œè¿˜èƒ½æœ‰æ•ˆåœ°å‡å°ç„пޥå˜å½¢ã€?/span> </p> <p> <span style="font-size:16px;">2.刚性固定法</span> </p> <p> <span style="font-size:16px;">将焊件夹紧,使其处于ä¸èƒ½è‡ªåœ¨å˜å½¢çжæ€ä¸‹ç„ŠæŽ¥ï¼Œå¯ä»¥æœ‰æ•ˆåœ°å‡å°ç„пޥå˜å½¢ã€‚Tå½¢æ¢çš„刚性固定法焊接的方案。Tå½¢æ¢ç„ŠæŽ¥è¿›ç¨‹ä¸­ä¼šå‘作两ç§å˜å½¢ï¼šä¸€æ˜¯å› è§’焊ç¼çš„æ¨ªå‘缩短引起的角å˜å½¢ï¼›äºŒæ˜¯å› ç„Šç¼çš„纵å‘缩短引起的曲折å˜å½¢ã€‚è¦å…‹æœè¿™ä¸¤ç§å˜å½¢å¯ä»¥å°†å¹³æ¿ï¼ˆç¿¼æ¿ï¼‰åˆšæ€§å›ºå®šèµ·æ¥ã€?/span> </p> <p> <span style="font-size:16px;">3.</span><span style="font-size:16px;">ç¦å·žç£ç„ŠæžªåŽ‚å®?/span><span style="font-size:16px;">åå˜å½¢æ³•</span> </p> <p> <span style="font-size:16px;">焊å‰ä½¿å·¥ä»¶æœ‰ä¸€ä¸ªä¸Žç„ŠåŽå˜å½¢ç›¸åæ–¹å‘ã€å·¨ç»†ç›¸å½“çš„å˜å½¢ï¼Œä»¥ä½¿èƒ½æ•²å¥½æŠµæ¶ˆç„ŠæŽ¥æ—¶èƒ½å‘作的å˜å½¢ã€‚å¹³æ¿ä»¥å¯¹æŽ¥æ—¶é¿å…è§’å˜å½¢çš„åå˜å½¢åŠžæ³•ï¼Œå…¶åå˜å½¢çš„视点巨细è¦åˆé€‚;电渣焊对接立焊的åå˜å½¢æ³•;克æœå·¥å­—æ¢ç¿¼æ¿è§’å˜å½¢çš„åå˜å½¢æ³•ï¼›çƒç½å‡ºå£ä»¶å°é—­ç„Šç¼é¿å…塌陷的åå˜å½¢æ³•;桥å¼èµ·é‡æœºç®±å½¢æ¢ä¸ºé¿å…因焊ç¼çºµå‘缩短引起曲折å˜å½¢è€Œé¢„制上拱度的åå˜å½¢æ³•ã€?/span> </p> <p> <span style="font-size:16px;">åå˜å½¢æ³•çš„åº”ç”¨ï¼Œåº”ä¾æ®ä¸åŒçš„状况而确定怎么进行åå˜å½¢å¤„ç†ï¼Œä¸€èˆ¬æ¥è¯´ï¼Œç„Šç¼çš„æ¨ªå‘缩短能引起角å˜å½¢ï¼Œè¾ƒå¤šçš„并排在一起的焊ç¼çš„æ¨ªå‘缩短,能引起较显ç€çš„横å‘缩短,åè½è¾¹ç¼˜çš„长焊ç¼çš„纵å‘缩短能引起明显的曲折å˜å½¢ï¼Œç„пޥæ“ä½œæ—¶ï¼Œåº”ä¾æ®ä¸åŒçš„结构和或许å‘作å˜å½¢çš„状况,进行åå˜å½¢å¤„ç†ã€?/span> </p> <p> <span style="font-size:16px;"><a href="//goldsailusa.com" target="_blank"><strong>ç¦å·žæ°å› ç‰¹å¡‘料焊接设备有é™å…¬å?/strong></a>专业从事ç¦å·žç£ç„Šæž?ç¦å·ž<a href="//goldsailusa.com" target="_blank">×ðÁú¿­Ê±ÈËÉú¾ÍÊDz«:<strong>土工膜焊接机</strong></a>,ç¦å·žçˆ¬ç„Šæœ?若有相关方é¢çš„需è¦ï¼Œæ¬¢è¿Žå’¨è¯¢æˆ‘们ï¼?/span><span style="font-size:16px;"></span> </p> <p> <span style="font-size:16px;"><img src="/img.ashx?shopid=17738&file=20190518105909.jpg" /><br /> </span> </p> </div> <div id="1vqw39b74s" class="pagess"> <ul> <div>上一æ¡ï¼š<a href="news497353.html">人工河é“防渗ç¦å·žåœŸå·¥è†œç„ŠæŽ¥æœºå¤åˆè†œæ–½å·¥æ–¹æ¡?/a></div><div>下一æ¡ï¼š<a href="news497351.html">ç¦å·žåœŸå·¥è†œç„ŠæŽ¥æœºæ–½å·¥å·¥è‰ºæµç¨‹</a></div> </ul> </div> <div 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