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id="hzlxv7v" class="conNeiTitle" style="text-indent:10px;"> <span id="jdf7tpx" class="conNeiTitle-span1"><span></span>行業新聞</span> <span id="vfpzztp" class="conNeiTitle-span2">當前位置:<a href='http://www.translation-shanghai.com/'>主頁</a> > <a href='http://www.translation-shanghai.com/news/'>新聞中心</a> > <a href='http://www.translation-shanghai.com/news2/'>行業新聞</a> > </span> </div> <div id="x7r7nt5" class="conNeiText"> <div style=" text-align:left; float:left; margin:0px; padding:0px auto; width:98%;min-height:565px; margin-left:8px;"> <h1 class="title" style="margin-top:10px; margin-left:10px; text-align:center; line-height:35px;">航空插頭手工焊接七點重要知識</h1> <div id="z75nvdl" class='search2' style='text-align:center; border-top:dotted 1px #999; margin-top:10px; padding-top:10px;'><strong>發布時間: </strong>2018-12-11　瀏覽次數: ?</div> <div id="z7z7bj5" class="newp" style=" width:98%; padding:8px;"> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">上?？朴姎鈱I生產</span></span><strong><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;"><a href="http://www.translation-shanghai.com/"><span style="color:#ff0000;">航空插頭</span></a></span></strong><span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">的同時也可以提供線束焊接服務，一般使用烙鐵進行手工焊接。下面，介紹一下航空插頭手工焊接的相關知識。</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <strong><span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">一、航空插頭手工焊接的原理：</span></span></strong></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">手工焊接工藝一般就是通過烙鐵頭傳熱，熔化焊錫，來使焊接件（電子元器件等）與焊盤（被焊件）連接接合。</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">手工焊接要素有電源（焊臺或烙鐵）、加熱體（發熱芯）、烙鐵頭、焊錫、焊接件等等。</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <strong><span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">二、航空插頭無鉛焊接知識：</span></span></strong></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">早前的焊錫大多數是是錫鉛合金，比如63/37（錫63%，鉛37%），這種焊錫的熔點為183°。因為鉛會污染環境，一些法規會在電子產品中禁用鉛，所以替代的無鉛焊錫越來越普及。</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">無鉛焊錫相對有鉛焊錫來說具有以下幾個特點：</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">1、熔點升高約34-44度；</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">2、焊錫中錫含量增加了；</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">3、上錫能力差（也可以說可焊性差），無鉛焊錫的焊錫擴散性差，擴散面積差不多是共晶焊錫的1/3；</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <strong><span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">三、航空插頭手工焊接的溫度公式：</span></span></strong></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">焊接作業最適合的溫度是在使用的焊錫的熔點+50度。烙鐵頭的設定溫度，由于焊接部分的大小，電烙鐵的功率和性能，焊錫的種類和線型的不同，在上述溫度的基礎上還要增加X度（通常為100）為宜。</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">也就是說，烙鐵頭溫度=焊錫熔點+50+X（損耗）。比如：有鉛焊錫63/37常用焊接溫度：183+50+100=333°，無鉛錫銅為：227+50+100=377°。因為不同產品焊點大小、不同焊錫、不同環境及操作習慣等影響，此處X變化很大，所以焊接溫度有從350-450的使用情況。</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <strong><span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">四、航空插頭烙鐵頭損耗原理：</span></span></strong></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">烙鐵頭尖端結構大致為；銅-鍍鐵層-鍍錫層，焊接時，加熱的情況下，鍍鐵層會與焊錫中的錫之間發生物理化學反應，使得鐵被溶解腐蝕掉，而且這個過程隨著溫度升高會加速。所以，無鉛焊接時，因為焊接溫度普遍升高，同時焊錫中的錫含量也大幅度增加，這樣就使得烙鐵頭的壽命急劇減少。</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <strong><span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">五、航空插頭無鉛手工焊接常見問題：</span></span></strong></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">1、使用高溫時，容易損壞元器件；</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">2、烙鐵或焊臺熱回復性不好的話，容易出現虛焊假焊，不良率增加；</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">3、烙鐵頭氧化損耗增加；</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <strong><span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">六、航空插頭無鉛手工焊接常見對策：</span></span></strong></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">1、使用無鉛專用烙鐵頭（本身鍍無鉛錫，適當增厚鍍鐵層來延緩腐蝕，延長壽命，同時不影響導熱）；</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">2、使用無鉛專用焊臺（大功率、快速回溫，使得溫度更穩定，并能使用低溫進行焊接）；</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <strong><span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">七、航空插頭無鉛焊臺知識：</span></span></strong></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">由焊接原理可知，焊接工藝是靠熱量的傳遞來完成的。所以，無鉛焊接時需要加熱體有更好的供熱效率，這就要求焊臺或烙鐵有更大的功率和更快的熱回復性。</span></span></p> <p style="text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px;">?實踐證明，市面上常用的無鉛焊臺功率均在90W以上，比上以前的60W焊臺或單支烙鐵，熱效率及熱回復性都增加了很多，所以在焊接相同產品時，所需的焊接溫度會低上10-30度，且更穩定。這樣再配上特制的無鉛烙鐵頭，烙鐵頭的損耗也大大減少，成本降低的同時，產品品質也得到了保障。</span></span></p> <p style="letter-spacing: 0px; text-indent: 2em; line-height: 2.5em;"> <span style="color:#000000;"><span style="font-family: arial, helvetica, sans-serif; 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