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rel="nofollow">簡敏精密五金制造(上海)有限公司</a></p><p><span>聯(lián)系人：</span>龔先生</p><p><span>郵箱: </span></p><p><span>電話: </span>13818473006</p><p><span>傳真: </span>021_69726282</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>021-69726282</p><p><span>地址: </span>顧北東路365號C區(qū)1101</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="mwiu22x" class="page-proshow02"><p class="title">詳細說明</p><div id="hwoabdk" class="box"><p><p> 按適用范圍不同，可分為斜三角形和正三角形兩種運條方法。其中斜三角形運條法適用于焊接T形接頭的仰焊縫和有坡口的橫焊縫。其特點是能夠通過焊條的擺動控制熔化金屬，促使焊縫成形良好。正三角形運條法*適用于開坡口的對接接頭和T形接頭的立焊，蘇州特種焊絲供貨廠。其特點是一次能焊出較厚的焊縫斷面，有利于提高生產(chǎn)率，而且焊縫不易產(chǎn)生夾渣等缺點。三角形運條法6)圓圈形運條法。如圖3—22所示，將焊條末端連續(xù)作圓圈運動，并不斷前進。這種運條方法又分正圓圈和斜圓圈兩種。正圓圈運條法只適于焊接較厚工件的平焊縫，其優(yōu)點是能使熔化金屬有足夠高的溫度，有利于氣體從熔池中逸出，可防止焊縫產(chǎn)生氣孔。斜圓圈運條法適用于T形接頭的橫焊(平角焊)和仰焊以及對接接頭的橫焊縫，其特點是可控制熔化金屬不受重力影響，能防止金屬液體下淌，有助于焊縫成形。圓圈形運條法(三)收尾電弧中斷和焊接結(jié)束時，應(yīng)把收尾處的弧坑填滿，蘇州特種焊絲供貨廠。若收尾時立即拉斷電弧，則會形成比焊件表面低的弧坑。在弧坑處常出現(xiàn)疏松、裂紋、氣孔、夾渣等現(xiàn)象，因此焊縫完成時的收尾動作不*是熄滅電弧，而且要填滿弧坑。收尾動作有以下幾種：(1)劃圈收尾法。焊條移至焊縫終點時，作圓圈運動，直到填滿弧坑再拉斷電弧。?用薄鋼帶卷成圓形或異形鋼管，蘇州特種焊絲供貨廠，內(nèi)填一定成分的藥粉，經(jīng)拉制成的有縫藥芯焊絲。蘇州特種焊絲供貨廠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州特種焊絲供貨廠,焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265684541015/1545447.png"></div><p> 后者只預(yù)熱焊件邊緣較厚的部分。電源可采用直流正接，也可以采用交流。用交流電源焊接時，鋅的蒸發(fā)量較小。焊接參數(shù)宜采用較大的焊接電流和較快的焊接速度。厚16～20mm黃銅板的焊接參數(shù)為：焊接電流260～300A，鎢極直徑5mm，焊絲直徑～，噴嘴孔徑14～16mm，氬氣流量20～25L/min。為了減少鋅的蒸發(fā)，操作時可將填充焊絲與焊件'短接'，在填充焊絲上引弧和保持電弧，盡可能避免電弧直接作用到母材上，母材主要靠熔池金屬的傳熱來加熱熔化。焊接時，應(yīng)盡可能進行單層焊，板厚小于5mm的接頭，比較好能一次焊完。焊后焊件應(yīng)加熱到300～400℃進行退火處理，消除焊接應(yīng)力，以防止黃銅構(gòu)件在使用時破裂。4．黃銅碳弧焊黃銅碳弧焊時，根據(jù)母材的成分選用絲221、絲222、絲224等焊絲，也可用自制的黃銅焊絲施焊。焊接可以采用氣劑301等作熔劑。焊接應(yīng)短弧操作，以減少鋅的蒸發(fā)和燒損。蘇州特種焊絲供貨廠非常適合鑄造件缺點，零件表面拉傷、磨損，模具缺點的修復(fù)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州特種焊絲供貨廠,焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265664882812/4463123.png"></div><p> 因為焊層間熔渣清理不徹底，又由于焊速快，熔池凝固較快，熔渣來不及浮出熔池而形成夾渣。解決夾渣時應(yīng)注意兩點：一是徹底***層間熔渣，特別是封底層與坡口兩側(cè)的夾渣較難***，要用尖頭小錘及鋼鋸條認真清理；二是填充層施焊運條時應(yīng)在坡口兩側(cè)停留的時間稍長些，不*能使熔渣有充足的時間浮出，還可使焊縫焊得平整，為蓋面層的焊接打好基礎(chǔ)。咬邊咬邊是蓋面層焊接時**難克服的缺點，產(chǎn)生的原因是咬邊處液態(tài)金屬重力較大，造成下垂所致。為了防止產(chǎn)生咬邊，要做到以下3點：一是蓋面層要薄，不宜超過2～3mm；二是運條時擺動要均勻，在坡口的兩側(cè)一定要壓低電弧，使邊緣部位熔化控制在1mm左右；三是選用合適的焊接電流，當(dāng)選用ф，焊接電流為110A，以避免因熱輸入偏大而造成的咬邊缺點。</p><p> 如果*是引孤時使用高頻振蕩器，因時間較短，影響較小，如果頻繁起弧，或者把高頻振蕩器做為穩(wěn)弧裝置在焊接過程中持續(xù)使用，則高頻電磁場可成為有害因素之一。放射性的危害氬弧焊使用的釷鎢含有l(wèi)％一％的氧化釷。釷是一種放射性元素，能放射出α，β，γ三種射線。在焊接過程及與釷鎢棒的接觸過程中，可能會受到放射線的影響。通過大量調(diào)查，每天消耗的釷鎢棒*100--200mg，放射劑量極微，對人體影響不大。但是在容器內(nèi)焊接時，通風(fēng)不暢，煙塵中的放射性粒子有可能超過衛(wèi)生標(biāo)準(zhǔn)；二是在磨削釷鎢棒時及存放釷鎢棒的地點，放射性氣溶膠和放射性粉塵的濃度，可達到甚至超過衛(wèi)生標(biāo)準(zhǔn)。放射性物質(zhì)侵入體內(nèi)，可引起慢性放射性疾病，形成內(nèi)照射，主要表現(xiàn)在一般機能狀態(tài)減弱，可以看到明顯的衰弱無力、對傳染病的抵抗力明顯降低、體重減輕等癥狀。百度百科：放射性氣溶膠，懸浮在空氣或其他氣體中含有放射性核素的固體或液體微粒。固體或液體放射性微粒懸浮在空氣或氣體介質(zhì)中形成的分散體系。氣溶膠的基本特性是不穩(wěn)定,小于；1～10微米的微粒沉降緩慢，懸浮在空氣中較久。放射性氣溶膠的電離效應(yīng)高、濃度低、微粒上易帶電（由放射性衰變產(chǎn)生）。絕大部分的藥芯焊絲均由一扁平金屬薄片長條逐段經(jīng)過滾卷成U型斷面。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州特種焊絲供貨廠,焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265671406250/559850.png"></div><p> A172不銹鋼焊條符合GBE307-16相當(dāng)AWSE307-16說明:A172是鈦型藥皮的不銹鋼焊條，交直流兩用。焊縫金屬具有優(yōu)良的抗裂性。用途:適于ASTM307鋼及其它異種鋼焊接，也可用于耐沖擊腐蝕鋼和過渡層堆焊。如高錳鋼、淬硬鋼等。A201不銹鋼焊條符合GBE316-16相當(dāng)AWSE316-16說明:A201是鈦型藥皮的低碳Cr18Ni12Mo2不銹鋼焊條。施焊時藥皮具有不發(fā)紅、不開裂的特點，由于熔敷金屬添加Mo。故具有良好的耐蝕、耐熱及抗裂性能，特別對抗氯離子點蝕有好處。可交直流兩用。用途:用于焊接在有機和無機酸（非氧化性酸）介質(zhì)中工作的0Cr18Ni12Mo2不銹鋼設(shè)備。也可用于焊后不能進行熱處理的高鉻鋼或作為異種鋼焊接。A202不銹鋼焊條符合GBE316-16相當(dāng)AWSE316-16說明:A202是鈦鈣型藥皮的低碳Cr18Ni12Mo2不銹鋼焊條。由于焊縫金屬添加Mo，故具有良好的耐蝕、耐熱及抗裂性能，特別對抗氯離子點蝕有好處?？山恢绷鲀捎茫袃?yōu)良的操作工藝性能。用途:用于焊接在有機和無機酸（非氧化性酸）介質(zhì)中工作的0Cr18Ni12Mo2不銹鋼或作為異種鋼焊接。A207不銹鋼焊條符合GBE316-15相當(dāng)AWSE316-15說明:A207是堿***皮的低碳Cr18Ni12Mo2不銹鋼焊條。由于熔敷金屬含有Mo，故具有良好的耐蝕、耐熱及抗裂性能。大多數(shù)焊絲屬于此類，包括碳鋼焊絲、低合金結(jié)構(gòu)鋼焊絲、合金結(jié)構(gòu)鋼焊絲、不銹鋼焊絲和有色金屬焊絲等。江西GZ60S焊絲廠家</p><p style="text-indent:25px">為了防止焊絲生銹,須對焊絲(除不銹鋼焊絲外)表面進行特殊處理。蘇州特種焊絲供貨廠</p><p> A001G15不銹鋼焊條符合GBE308L-26相當(dāng)AWSE308L-26說明及用途：A002不銹鋼焊條符合GBE308L-16相當(dāng)AWSE308L-16說明:A002是鈦鈣型藥皮的**碳Cr19Ni10不銹鋼焊條。其熔敷金屬含碳量≤，有很好的抗晶間腐蝕性能、良好的焊接工藝性能，藥皮耐紅，強度好，抗氣孔性好?？山恢绷鲀捎?。用途:用于焊接**碳Cr19Ni10不銹鋼結(jié)構(gòu)，也可用于0Cr19Ni11Ti工作溫度低于300℃耐腐蝕的不銹鋼結(jié)構(gòu)，主要用于合成纖維、化肥、石油等設(shè)備的制造。A002A不銹鋼焊條符合GBE308L-17相當(dāng)AWSE308L-17說明：鈦鈣性耐發(fā)紅**碳Cr19Ni10不銹鋼焊條，交直流兩用。具有耐發(fā)紅、焊接工藝性能優(yōu)良等特點。該焊條系引進OK61、30技術(shù)生產(chǎn)。用于焊接含鈦穩(wěn)定奧氏體不銹鋼和同類型不銹鋼。A022不銹鋼焊條符合GBE316L-16相當(dāng)AWSE316L-16說明:A022是鈦鈣型藥皮的**碳Cr18Ni12Mo2不銹鋼焊條，其熔敷金屬含碳量≤，具有良好的耐熱、耐腐蝕及抗裂、抗氣孔性能，有良好的操作工藝性能，藥皮耐紅，強度好?？山恢绷鲀捎谩Ｓ猛?用于焊接尿素、合成纖維等設(shè)備及相同類型的不銹鋼結(jié)構(gòu)。蘇州特種焊絲供貨廠</p><p style="text-indent:25px">簡敏精密五金制造(上海)有限公司致力于五金、工具，是一家生產(chǎn)型的公司。簡敏五金制造致力于為客戶提供良好的模具焊條，模具焊絲，特種焊絲，特種焊條，一切以用戶需求為中心，深受廣大客戶的歡迎。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造五金、工具良好品牌。簡敏五金制造憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來的聲譽和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/3139477.html</p></div></div></div></div></div><div id="wlskm7j" 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