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href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_wjgj/">五金、工具</a>?<a href="http://www.cdcfah.com/cp/second-wjgj_hjclyfjqh/">焊接材料與附件</a>?<a href="http://www.cdcfah.com/cp/third-hjclyfjqh_hansi/">焊絲</a>?南京THW焊條焊絲歡迎咨詢(xún) 簡(jiǎn)敏精密五金制造供應(yīng)</p><div id="8vc9bhj" class="leftbox clearfix"><h1>南京THW焊條焊絲歡迎咨詢(xún) 簡(jiǎn)敏精密五金制造供應(yīng)</h1><div id="3ipeb3v" class="proBig"><div id="s2pgnhd" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275563994140/7040916.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="qhjyfmo" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275563994140/7040916.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="lprifro" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>南京THW焊條焊絲,焊條焊絲</p><p><span>***更新：</span>2020-09-18 02:04:24</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="j8tlnpw" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">簡(jiǎn)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(huà): </span>13818473006</p><p><span>傳真: </span>021_69726282</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-69726282</p><p><span>地址: </span>顧北東路365號(hào)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="vumoqn8" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="3d788vx" class="box"><p><p> 具有工藝性能良好、操作方便、焊接質(zhì)量穩(wěn)定的特點(diǎn)。在不易進(jìn)行背面充氬保護(hù)的管道焊接作業(yè)及高空作業(yè)時(shí)其優(yōu)點(diǎn)更為突出，值得在火力發(fā)電廠安裝工程中推廣應(yīng)用。1、焊接材料與工藝本次試驗(yàn)中母材采用1Cr18Ni9奧氏體不銹鋼，規(guī)格為Ф42mm×5mm，化學(xué)成分及力學(xué)性能見(jiàn)表1、表2。焊絲為昆山京群焊材科技有限公司生產(chǎn)的GTS-F308L藥芯焊絲，符合AWS-95R308LT1-5及GB/T17853-99R308LT1-5標(biāo)準(zhǔn)。焊絲規(guī)格為Ф×915mm，藥芯焊絲熔敷金屬的化學(xué)成分見(jiàn)表3。坡口尺寸的選擇坡口型式、對(duì)口參數(shù)及焊道設(shè)計(jì)見(jiàn)附圖。由于奧氏體不銹鋼的導(dǎo)熱系數(shù)小而線膨脹系數(shù)大，焊接時(shí)變形大。如果在焊接時(shí)選用的坡口較大，則將會(huì)增多填充金屬，增加焊的擺動(dòng)距離，降低焊接速度，加大了變形量，南京THW焊條焊絲，增加了焊縫在高溫段的停留時(shí)間，增加了產(chǎn)生晶間腐蝕及熱裂紋的可能性，所以在保證焊縫質(zhì)量及焊工易操作的前提下，應(yīng)適當(dāng)減少坡口尺寸。經(jīng)過(guò)反復(fù)實(shí)踐，將坡口尺寸選擇為55°±5°。對(duì)口間隙也適當(dāng)增大，南京THW焊條焊絲，有利于熔渣流到焊縫根部以保護(hù)根部焊縫不受氧化，南京THW焊條焊絲。附圖坡口型式與焊道設(shè)計(jì)焊接位置為45°斜焊（6G）。打底層和該面層全部采用藥芯焊絲進(jìn)行焊接。層間溫度的控制奧氏體不銹鋼焊接中。在氣焊和鎢極氣體保護(hù)電弧焊時(shí)，焊絲用作填充金屬。南京THW焊條焊絲</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京THW焊條焊絲,焊條焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275563994140/7040916.png"></div><p> 對(duì)本實(shí)用新型作進(jìn)一步說(shuō)明：結(jié)合圖1—圖4所示，一種防腐罐用焊條自動(dòng)生產(chǎn)設(shè)備，由塑料擠出機(jī)a、水冷循環(huán)系統(tǒng)b、自動(dòng)切斷機(jī)構(gòu)c、焊條接斗d組成，四者從前到后依次布置。水冷循環(huán)系統(tǒng)b，主要由機(jī)架1、水槽2、焊條導(dǎo)向桿3、水龍頭4、水管5和水泵組成。機(jī)架1上方設(shè)置有長(zhǎng)條形的水槽2，水槽2由水平隔板分割成上層槽2a和下層槽，上層槽2a呈敞開(kāi)狀態(tài)，下層槽為封閉狀態(tài)。在水槽2的兩端設(shè)置有連通槽2c。上層槽2a的前壁、后壁上對(duì)應(yīng)開(kāi)設(shè)有焊條過(guò)孔2b，焊條過(guò)孔的直徑為等邊三角形焊條19邊長(zhǎng)的兩倍到三倍之間，供從塑料擠出機(jī)出來(lái)的焊條通過(guò)，同時(shí)還能確保上層槽2a的冷卻水由焊條過(guò)孔2b流入連通槽2c。限定焊條過(guò)孔的直徑與等邊三角形焊條邊長(zhǎng)之間的關(guān)系，既能確保對(duì)焊條位置的限定，又能確保水流量。在上層槽2a內(nèi)前后間隔安裝有兩根水平設(shè)置的焊條導(dǎo)向桿3，但不限于兩根，對(duì)通過(guò)的焊條進(jìn)行導(dǎo)向。焊條過(guò)孔2b、焊條導(dǎo)向桿3在高度上齊平，確保焊條在水冷過(guò)程中水平地順暢通過(guò)，防止焊條彎曲變形。上層槽2a的冷卻水能經(jīng)焊條過(guò)孔2b流入連通槽2c，并**終流進(jìn)下層槽，再由水泵將下層槽的水泵入與水龍頭4相連的水管5。水龍頭4位于上層槽2a的前壁上方并正對(duì)焊條過(guò)孔2b。安徽鑄鐵焊條焊絲生產(chǎn)廠?非常適合鑄造件缺點(diǎn)，零件表面拉傷、磨損，模具缺點(diǎn)的修復(fù)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京THW焊條焊絲,焊條焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265668525390/8688498.png"></div><p> 控制層間溫度對(duì)避免產(chǎn)生晶問(wèn)腐蝕及熱裂紋尤為重要，并可控制焊縫根部的氧化，因此焊接時(shí)應(yīng)盡量選用小線能量快速焊。層間溫度應(yīng)控制在50~60℃。焊接工藝參數(shù)焊接前將坡口內(nèi)外邊緣10~20mm處焊件表面的油污、水、銹等清理干凈，露出金屬光澤。焊接工藝參數(shù)的選擇，見(jiàn)表4所示。2、焊縫外觀檢驗(yàn)及性能試驗(yàn)焊縫外觀成形良好，尤其是焊縫背面成形美觀，無(wú)焊瘤、未熔合、未焊透等缺點(diǎn)。射線檢測(cè)按照J(rèn)B/T4730《承壓設(shè)備無(wú)損檢測(cè)》標(biāo)準(zhǔn)進(jìn)行，II級(jí)及以上為合格，經(jīng)評(píng)定為合格。力學(xué)性能試驗(yàn)按GB/T228和GB/T2653規(guī)定的試驗(yàn)方法，對(duì)焊接接頭試樣進(jìn)行了拉伸試驗(yàn)和彎曲試驗(yàn)，拉伸實(shí)驗(yàn)結(jié)果如表5所示，彎曲試驗(yàn)結(jié)果如表6所示。實(shí)驗(yàn)結(jié)果為合格。3、焊接操作要領(lǐng)不銹鋼藥芯焊絲是利用焊絲中間的藥粉熔化后，在熔敷金屬背面和正面形成熔渣進(jìn)行保護(hù)，所以根部焊接時(shí)與實(shí)芯焊絲焊接的操作方法、電弧擺動(dòng)頻率、填絲量有較大區(qū)別。（1）在焊接過(guò)程中，焊要做圓弧形擺動(dòng),其目的是使鐵水和熔渣加速分離，便于觀察熔池，同時(shí)也可增加母材坡口兩側(cè)的熱輸入量，防止出現(xiàn)單邊未熔合。在填充焊絲時(shí)，應(yīng)將焊絲送到熔池根部并向下輕壓一下，以保證根部熔透及根部?jī)?nèi)成形。。</p><p> 龜裂之焊合。**度焊絲，含鎳鉻合金成份高，用于防破裂底層焊接、填充打底，拉力強(qiáng)，并可修補(bǔ)鋼材之龜裂焊合重建。718>～HRC28～30大型家電、玩具、通信、電子、運(yùn)動(dòng)器材等塑料產(chǎn)品模具鋼。塑料射出模、耐熱模、抗腐蝕模，切削性、蝕花性良好，研磨后表面光澤性?xún)?yōu)良，使用壽命長(zhǎng)。預(yù)熱溫度250～300℃后熱溫度400~500℃，作多層焊補(bǔ)時(shí)，采用后退法焊補(bǔ)，較不易產(chǎn)生融合不良及等缺點(diǎn)。738>～HRC32～35半透明及需有表面光澤之塑料產(chǎn)品模具鋼，大型模具，產(chǎn)品形狀復(fù)雜及精度高之塑料模用鋼。塑料射出模、耐熱模、抗腐蝕模、蝕花性良好，具備優(yōu)良加工性能，易切削拋光和電蝕，韌性及耐磨性佳。預(yù)熱溫度250～300℃后熱溫度400～500℃，作多層焊補(bǔ)時(shí)，采用后退法焊補(bǔ)，較不易產(chǎn)生熔合不良及等缺點(diǎn)。P20Ni>～HRC30～34塑料射出模、耐熱模（鑄銅模）。以焊接裂開(kāi)敏感性低的合金成份設(shè)計(jì)，含鎳約1%，適合PA、POM、PS、PE、PP、ABS塑料，具良好之拋光性，焊后無(wú)氣孔、裂紋，打磨后有良好之光潔度，經(jīng)真空脫氣，鍛造后，預(yù)硬至HRC33度，斷面硬度分布均一，模具壽命達(dá)300,000以上。預(yù)熱溫度250～300℃后熱溫度400～500℃，作多層焊補(bǔ)時(shí)，采用后退法焊補(bǔ)。?自保護(hù)藥芯焊絲，是在氣保護(hù)藥芯焊絲問(wèn)市不久，便被發(fā)展出來(lái)，也很快的被工業(yè)界廣為認(rèn)同于特定的用途上。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京THW焊條焊絲,焊條焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275559472656/4989795.png"></div><p> 生產(chǎn)效率高在相同焊接電流下藥芯焊絲的電流密度大，熔化速度快，其熔敷率約為85%-90%，生產(chǎn)率比焊條電弧焊高約3-5倍。4）可用較大焊接電流進(jìn)行全位置焊接。⑵缺點(diǎn)1）焊絲制造過(guò)程復(fù)雜2）焊接時(shí)，送絲較實(shí)心焊絲困難3）焊絲外表容易銹蝕，粉劑易吸潮，因此對(duì)藥芯焊絲保存一管理的要求更為嚴(yán)格焊絲焊劑功能編輯與被覆焊條相同，藥芯焊絲的制造商對(duì)焊劑成份均為其特有的配方，隨著焊材適用的功能不同，焊劑成份組成亦各不同。焊劑成份的基本功能略述如下：⑴除氧劑與除氮?jiǎng)┯捎诘c氧可使焊道金屬造成氣孔或脆化，焊劑中必須添加錳與硅等除氧劑，至于自保護(hù)藥芯焊絲，焊劑中另需添加AL為除氮?jiǎng)?。以上添加除氧劑及除氮?jiǎng)┠康木谟趦艋厶罱饘佟＂坪冈纬蓜┾}、鉀、鈉或硅等均為焊渣形成劑，添加在焊劑中可以有效保護(hù)熔池不受大氣污染，焊渣可使焊道具較佳的外觀而且快速冷卻后又可以支撐全姿勢(shì)焊接時(shí)的熔池。焊渣的覆蓋更可緩和熔填金屬冷卻速率，此功能對(duì)低合金鋼的焊接尤其重要。⑶電弧穩(wěn)定劑鈉及鉀可以使電弧保持柔和順暢而且降低飛濺。⑷合金元素鉬、鉻、碳、錳、鎳及釩等合金元素的添加，可以提高（改善）熔填金屬的強(qiáng)度、延性、硬度及韌性等。絕大部分的藥芯焊絲均由一扁平金屬薄片長(zhǎng)條逐段經(jīng)過(guò)滾卷成U型斷面。南京日亞焊條焊絲廠家</p><p style="text-indent:25px">?用合金含量高于母材的焊絲作填充金屬，通常可防止焊縫金屬裂紋。南京THW焊條焊絲</p><p> 需要消耗大量有.毒、易燃溶劑，生產(chǎn)成本高，對(duì)人體傷害大，污染環(huán)境，占地大，難于實(shí)現(xiàn)連續(xù)化操作。因此，推薦采用烙融接枝法。[0026]在一種實(shí)施方式中，所述MAH-g-SEBS中，ΜΑΗ的接枝率為1%~3%;推薦地，所述MAH-g-SEBS中，ΜΑΗ的接枝率為2〇/〇。[0027]本申請(qǐng)中的馬來(lái)酸酢改性EVA(MAH-g-EVA)也無(wú)特別限定，可W為市售的或?qū)嶒?yàn)合成的，例如可W采用溶液接枝和烙融接枝兩種方法得到。[0028]在一種實(shí)施方式中，所述MAH-g-EVA中，ΜΑΗ的接枝率為1%~5%;推薦地，所述MAH-g-EVA中，ΜΑΗ的接枝率為3〇/〇。[0029]本申請(qǐng)中的術(shù)語(yǔ)"橫化聚苯并咪挫-硅氧烷共聚物"是指由橫化聚苯并咪挫預(yù)聚物與含硅氧烷預(yù)聚物共聚得到的產(chǎn)物。[0030]在一種實(shí)施方式中，所述橫化聚苯并咪挫-硅氧烷共聚物由氨基封端橫化聚苯并咪挫預(yù)聚物與含硅氧烷二酢按摩爾比1:()制備得到；推薦地，氨基封端橫化聚苯并咪挫預(yù)聚物與含硅氧烷二酢的摩爾比為1:();更推薦地，氨基封端橫化聚苯并咪挫預(yù)聚物與含硅氧烷二酢的摩爾比為1:〇.95。[0031]在一種實(shí)施方式中，所述氨基封端橫化聚苯并咪挫預(yù)聚物由四胺和橫化二酸按摩爾比為1:()制備得到；推薦地，四胺和橫化二酸的摩爾比為1:。南京THW焊條焊絲</p><p 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