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焊接甉|µã€åŠ åŽ‹åŠ›ã€é€šç”µæ—¶åˆ»ã€ç”µ‹¹æ‡L形、资料外表状å†ëŠŠ¶å†ëŠ­‰éƒ½æ˜¯å½±å“ç‚¹ç„Šæœºç„ŠæŽ¥çš„一些主要要素。其间点焊机焊接甉|µã€åŠ åŽ‹åŠ›ã€é€šç”µæ—¶åˆ»è¢«ç§°ä¸ºç‚¹ç„Šæœºç„ŠæŽ¥çš„三大要素。点焊机焊池的熔接是在数个周期的极短的时åˆÕd†…完成的,òq¶ä¸”å› äؓ是发生在金属触摸内部的景象,很难在焊接中边调查边控制甉|µä»¥åŠåˆ«çš„影响焊接的诸多要素,因而,实践焊接旉™ƒ½æ˜¯ç»˜q‡å¯¹ä¸‹å›¾çš„诸要素˜q›è¡Œäº‹å‰ç ”讨、掌握、试验、调查来册™®®æœ€é€‚用的组合条件ã€?br /> 榜首åQŒç„ŠæŽ¥ç”µ‹¹?br /> 因äؓ电阻发生的热量与¾lè¿‡çš„电‹¹çš„òqÏx–¹æˆæ­£æ¯”,因而焊接电‹¹æ˜¯å‘生热量的最主要的要素。焊接电‹¹çš„主要性还不单¾U¯æŒ‡ç„ŠæŽ¥ç”‰|µçš„å·¨¾l†ï¼Œç”‰|µå¯†åº¦çš„高低也是很主要的ã€?br /> 熔核åQšæŒ‡æ­æŽ¥ç”µé˜»ç„Šæ—¶åQŒå‘生在接合部的熔融后凝¾l“的金属有些ã€?br /> ½W¬äºŒåQŒåŠ åŽ‹åŠ›<br /> 点焊机焊接进½E‹åŠ åŽ‹åŠ›æ˜¯çƒ­é‡å‘生的主要要素。加压力是施加给焊接处的机械力气åQŒç»˜q?加压力ä‹É触摸电阻削减åQŒä‹É电阻值均匀åQŒå¯é˜²æ­¢ç„ŠæŽ¥æ—¶çš„部分加热åQŒä‹É焊接作用均匀ã€?br /> ½W¬ä¸‰åQ?通电时刻<br /> 通电时刻也是发生热量的主要要素,通电发生的热量经˜q‡ä¼ å¯¼æ¥æ–½æ”¾åQŒå³ä½¿æ€Èš„热量必定åQŒå› ä¸ºé€šç”µæ—¶åˆ»çš„不一æ øP¼Œç„ŠæŽ¥å¤„的最高温度就不一æ øP¼Œç„ŠæŽ¥¾l“果也不一栗÷€?br /> ½W¬å››åQŒç”µ‹¹æ‡Lå½?br /> 发热与加压在时刻上的最好组合对点焊机是非常主要的,为此焊接˜q›ç¨‹ä¸­å„刚w‚£é—´çš„温度分布有必要恰当。依据被焊物原料及尺度,使在必定时刻内流˜q‡å¿…定的甉|µåQŒå…³äºŽè§¦æ‘”Rƒ¨çš„发热,若加压缓慢,ž®†è‡´ä½‰Kƒ¨åˆ†åŠ çƒ­ï¼Œæ¶åŒ–点焊机焊接作用。别的,若电‹¹æ€¥å‰§ä¸­æ­¢åQŒç„ŠæŽ¥éƒ¨éª¤å†·ä¼šå‘生裂¾~å’ŒåŽŸæ–™è„†åŒ–。因而,应在ä¸È”µ‹¹ç»˜q‡çš„之前或以后,通以ž®ç”µ‹¹ï¼Œæˆ–在上升和降低电‹¹ä¸­å‚加脉冲ã€?br /> 【例】厚板材及冲压成型品½{‰å­˜åœ¨å˜å½¢å’Œåº”变åQŒäؓ使板间焊接后紧密¾l“合åQŒåœ¨ä¸È”µ‹¹ä¹‹å‰å…ˆ‹¹è¿‡ž®ç”µ‹¹è¿›è¡Œé¢„热ã€?br /> 【例】关于会发生热硬化或裂缝的资料,则在ä¸È”µ‹¹æµ˜q‡ä»¥åŽï¼Œé€šä»¥ž®ç”µ‹¹è¿›è¡ŒåŽçƒ­ï¼Œä»¥åˆ°è¾ùN€€ç«å¤„理ã€?br /> ½W¬äº”åQŒèµ„料的外表状况<br /> <p> 触摸电阻是与触摸部的发热直接相关的要素,在加压力必定æ—Óž¼Œè§¦æ‘¸ç”µé˜»å†Œ™®®ä¸Žç„ŠæŽ¥ç‰©å¤–表状况åQŒå³åŽŸæ–™å†Œ™®®åŽï¼Œè§¦æ‘¸ç”µé˜»å–决于金属外表的¾l†å¾®é«˜ä½Žä¸Žæ°§åŒ–膜。细微高低利于得到触摸电é˜Õd¸Œæœ›çš„发热规模åQŒä½†å› äؓ氧化膜的存在åQŒä‹É电阻增大åQŒä¼šè‡´ä‹É部分加热åQŒæ‰€ä»¥ä»æ˜¯åº”当清除去ã€?</p> <p> <img src="/uploads/image/20161224/20161224120427_5158.jpg" alt="" /> </p> <div> <br /> </div> </div> <div class="newsnext"> <div>上一æ?<a href="9.html">自动点焊机在使用旉™œ€æ³¨æ„å“ªäº›äº‹é¡¹</a></div> <div>下一æ?<a 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