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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="uzgdasz" 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>江蘇特種焊絲生產(chǎn)廠,焊絲</p><p><span>***更新：</span>2020-11-12 00:19:36</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="cgnkhjl" 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: </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="hvxegnp" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="afczwiu" class="box"><p><p> 焊條電弧焊從焊接電弧的基礎(chǔ)講起，按“有認(rèn)知、易學(xué)會(huì)、好掌握、能操作”的原則，由淺入深、循序漸進(jìn)地講解了焊條電弧焊的工藝?yán)碚摵蛯?shí)操技能。本書主要內(nèi)容包括：焊接技術(shù)基礎(chǔ)知識(shí)、焊條電弧焊設(shè)備、焊條的組成和分類、焊條的型號(hào)與牌號(hào)、常用焊條焊接工藝性能及選用原則，江蘇特種焊絲生產(chǎn)廠、焊條的正確保管與貯存、焊條電弧焊基本工藝知識(shí)、焊接冶金基本知識(shí)、焊接接頭的組.織與性能、焊條電弧焊常見焊接缺點(diǎn)及其防止、典型管類和管板類焊接技術(shù)，江蘇特種焊絲生產(chǎn)廠、碳弧氣刨。一、焊條電弧焊的操作焊條電弧焊**基本的操作是引弧、運(yùn)條和收尾(一)引弧引弧即產(chǎn)生電弧。焊條電弧焊是采用低電壓、大電流放電產(chǎn)生電弧，依靠電焊條瞬時(shí)接觸工件實(shí)現(xiàn)。引弧時(shí)必須將焊條末端與焊件表面接觸形成短路，然后迅速將焊條向上提起2～4mm的距離，此時(shí)電弧即引燃。引弧的方法有兩種：碰擊法和擦劃法，詳見圖3—14引弧方法(1)碰擊法。也稱點(diǎn)接觸法或稱敲擊法。碰擊法是將焊條與工件保持一定距離，然后垂直落下，江蘇特種焊絲生產(chǎn)廠，使之輕輕敲擊工件，發(fā)生短路，再迅速將焊條提起，產(chǎn)生電弧的引弧方法。此種方法適用于各種位置的焊接。(2)擦劃法。也稱線接觸法或稱摩擦法。擦劃法是將電焊條在坡口上滑動(dòng)，成一條線，當(dāng)端部接觸時(shí)，發(fā)生短路。熔滴的過渡多以球滴過渡為主，飛濺較多。江蘇特種焊絲生產(chǎn)廠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇特種焊絲生產(chǎn)廠,焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265688232422/703661.png"></div><p> 對(duì)本實(shí)用新型作進(jìn)一步說明：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)開設(shè)有焊條過孔2b，焊條過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)出來的焊條通過，同時(shí)還能確保上層槽2a的冷卻水由焊條過孔2b流入連通槽2c。限定焊條過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)通過的焊條進(jìn)行導(dǎo)向。焊條過孔2b、焊條導(dǎo)向桿3在高度上齊平，確保焊條在水冷過程中水平地順暢通過，防止焊條彎曲變形。上層槽2a的冷卻水能經(jīng)焊條過孔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)焊條過孔2b。江蘇特種焊絲生產(chǎn)廠主要用于工件表面的手工堆焊，以滿足如抗氧化、耐磨損和高溫下耐腐蝕等特殊性能要求。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇特種焊絲生產(chǎn)廠,焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265671318359/8288159.jpg"></div><p> 要做到以下要求：一是為了保證試板坡口兩側(cè)有良好的熔合，采用的焊接電流宜稍大，當(dāng)用ф，焊接電流以90A為宜；二是要采用短弧施焊，以利于保護(hù)熔池，同時(shí)利用電弧作用力把熔池鐵液托住，并且把部分熔滴過渡到試件背面（即上面）；三要使后續(xù)熔池覆蓋前一熔池的1/2，并適當(dāng)提高焊接速度，以減小熔深，減小液態(tài)金屬自身重力，避免焊縫金屬下垂上凹；四是保持正確的運(yùn)條方式，使焊條與試板左右兩側(cè)呈90o，并與焊接方向呈70o～80o的夾角。施焊時(shí)，焊件背面應(yīng)保持2/3弧柱，以利于熔滴過渡和熔池保護(hù)。運(yùn)條時(shí)應(yīng)左右輕微擺動(dòng)。當(dāng)焊至接近試板中部時(shí)，因變形使間隙變窄，此時(shí)可不使焊條左右橫向擺動(dòng)，而沿焊接方向連弧焊接；五是更換焊條接頭要迅速，應(yīng)在接頭部位處于紅熱狀態(tài)下迅速引弧，盡快恢復(fù)焊接狀態(tài)，這樣可使接頭處成形良好，也可減少氣孔、夾渣等缺點(diǎn)。填充層的焊接填充層采用左右擺動(dòng)運(yùn)條方式連弧焊接，操作昱應(yīng)注意兩點(diǎn)：一要使焊條與試板在左右方向上處于垂直狀態(tài)，以避免填充層焊縫左右不等厚，影響焊縫成形。為了把握好角度，有的焊工改用雙手握焊鉗施焊，效果不錯(cuò)；二要將道間熔渣清理干凈，避免出現(xiàn)夾渣。填充層以2層為宜，較薄的焊層。</p><p> 此時(shí)應(yīng)選用抗裂性較好的堿性焊條。（4）根據(jù)焊件的工作條件、使用性能和幾何形狀選用焊條1）載荷性質(zhì)在承受動(dòng)載荷或沖擊載荷情況下，除了要求保證抗拉強(qiáng)度外，還對(duì)焊縫金屬的塑性和沖擊韌度有較高的要求，推薦使用堿性焊條。2）工作介質(zhì)若焊件是在腐蝕介質(zhì)中工作的不銹鋼件或其它耐腐蝕材料，必須根據(jù)介質(zhì)種類、濃度、工作溫度等情況，選擇或按設(shè)計(jì)規(guī)定采用相應(yīng)的不銹鋼焊條或其它耐腐蝕焊條。3）幾何形狀根據(jù)焊件幾何形狀的復(fù)雜程度、剛性的大小、焊接坡口制備情況以及焊接部位所處的位臵選用焊條，應(yīng)遵循下列原則：[1]形狀復(fù)雜或大厚度的焊件，由于焊縫金屬在冷收縮時(shí)會(huì)產(chǎn)生較大的應(yīng)力，易形成裂紋，因此應(yīng)選用抗裂性較高的焊條，如堿性焊條。[2]某些難以清理干凈的焊接部位，應(yīng)選用氧化性強(qiáng)，對(duì)鐵銹、氧化皮和油垢敏感性較小的酸性焊條，以免產(chǎn)生氣孔等缺點(diǎn)。[3]焊接部件因受條件限制不能翻轉(zhuǎn)時(shí)，必須選用能在任何空間位臵（全位臵）進(jìn)行焊接的焊條。（5）根據(jù)工地設(shè)備和勞動(dòng)條件選用焊條1）根據(jù)工地設(shè)備狀況選用焊條[1]在沒有直流焊機(jī)的工作場(chǎng)所，不能選用***用直流電源的堿性焊條，應(yīng)選用交流焊條或交、直流兩用的堿性焊條。[2]對(duì)于某些焊件，若選用一般焊條。為了防止焊絲生銹,須對(duì)焊絲(除不銹鋼焊絲外)表面進(jìn)行特殊處理。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇特種焊絲生產(chǎn)廠,焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265685117187/5944643.png"></div><p> 1954年哈爾濱鍋爐廠從德國(guó)引進(jìn)氬弧焊是在普通電弧焊的原理的基礎(chǔ)上,利用氬氣對(duì)金屬焊材的保護(hù),通過高電流使焊材在被焊基材上熔化成液態(tài)形成熔池,使被焊金屬和焊材達(dá)到冶金結(jié)合的一種焊接技術(shù),由于在高溫熔融焊接中不斷送上氬氣,使焊材不能和空氣中的氧氣接觸,從而防止了焊材的氧化。手工鎢極氬弧焊時(shí)選擇電源的種類和極性的方法手工鎢極氬弧焊的電源有直流電源和交流電源,直流電源有直流正接法和直流反接法。直流正接法:焊件接正極,鎢極接負(fù)極,這樣焊接時(shí),電子高速?zèng)_向焊件,焊接溫度高,熔池深而窄。正離子沖向鎢極,鎢極熱量低損耗小。該方法適用于耐熱鋼、合金鋼、不銹鋼、銅、鈦等金屬的焊接。直流反接法:焊件接負(fù)極,鎢極接正極,焊接時(shí)電子高速?zèng)_向鎢極,鎢極熱量高,消耗快,故一般不使用。用于焊接高熔點(diǎn)氧化膜的鋁、鎂及其合金。交流電源由于極**替變化,它既有“陰極霧化”作用,又有鎢極消耗比直流反接法少的特點(diǎn),適用于鋁、鎂及其合金的焊接。手工鎢極氬弧焊時(shí)噴嘴的選擇方法噴嘴大小和形狀直接影響氬氣保護(hù)區(qū)的保護(hù)范圍和效果,常用的噴嘴有6號(hào),7號(hào),8號(hào),10號(hào)。噴嘴直徑的選擇不宜過大,否則會(huì)妨礙操作,浪費(fèi)氬氣;但也不宜過小,否則熔池保護(hù)不好,容易產(chǎn)生缺點(diǎn)。?工藝性能好，焊縫成形美觀采用氣渣聯(lián)合保護(hù)，獲得良好成形。江西H13焊絲商家</p><p style="text-indent:25px">藥芯焊絲工藝性能好，焊縫成形美觀采用氣渣聯(lián)合保護(hù)，獲得良好成形。江蘇特種焊絲生產(chǎn)廠</p><p> 也可用于硬化性大的鉻鋼（如Cr5Mo、Cr9Mo、Cr13、Cr28等）以及異種鋼的焊接。A407不銹鋼焊條符合GBE310-15相當(dāng)AWSE310-15說明:A407是堿***皮的Cr26Ni21純奧氏體不銹鋼焊條。熔敷金屬900~1100℃高溫條件下具有優(yōu)良的抗氧化性。采用直流反接，可進(jìn)行全位置焊接。由于焊縫為純奧氏體，抗熱裂性能不及雙相組.織的好。用途:用于同類型的耐熱不銹鋼，不銹鋼襯里以及異種鋼的焊接，也可用來焊接硬化性大的Cr5Mo、Cr9Mo、Cr13及Cr28鋼等的焊接。A412不銹鋼焊條符合GBE310Mo-16相當(dāng)AWSE310Mo-16說明:A412是鈦鈣型藥皮的Cr26Ni21Mo2純奧氏體不銹鋼焊條。由于熔敷金屬中添加了Mo，故耐蝕性、耐熱性、抗裂性能均比A402、A407有所改善。交直流兩用，操作工藝性能良好。用途:用于焊接在高溫下工作的耐熱不銹鋼，也可用來焊接不銹鋼襯里、異種鋼等。在焊接淬硬性高的碳鋼、低合金鋼時(shí)韌性極好。A422不銹鋼焊條說明:A422是鈦鈣型藥皮的Cr25Ni18Mn8不銹鋼焊條,交直流兩用。由于焊縫中加入了較多的Mn，因而提高了焊縫的抗熱裂性能。用途:用于補(bǔ)焊爐卷軌機(jī)上的Cr25Ni20Si2奧氏體耐熱鋼卷筒，也可用于焊接異種鋼等。江蘇特種焊絲生產(chǎn)廠</p><p style="text-indent:25px">簡(jiǎn)敏精密五金制造(上海)有限公司總部位于顧北東路365號(hào)C區(qū)1101，是一家精密五金、普通機(jī)械設(shè)備加工(限分支機(jī)構(gòu)經(jīng)營(yíng))、銷售;模具加工(限分支機(jī)構(gòu)經(jīng)營(yíng))及維修;工業(yè)設(shè)備、包裝材料、焊材、五金配件的加工(以上限分支機(jī)構(gòu)經(jīng)營(yíng))、銷售;工業(yè)自動(dòng)化設(shè)備安裝及維修(除特種設(shè)備);自行車及配件(電動(dòng)自行車按本市產(chǎn)品目錄經(jīng)營(yíng))、蓄電池、橡膠制品、電動(dòng)工具、焊接材料、汽車配件、金屬材料、鋼材、建材的批發(fā)兼零售。的公司。簡(jiǎn)敏五金制造作為精密五金、普通機(jī)械設(shè)備加工(限分支機(jī)構(gòu)經(jīng)營(yíng))、銷售;模具加工(限分支機(jī)構(gòu)經(jīng)營(yíng))及維修;工業(yè)設(shè)備、包裝材料、焊材、五金配件的加工(以上限分支機(jī)構(gòu)經(jīng)營(yíng))、銷售;工業(yè)自動(dòng)化設(shè)備安裝及維修(除特種設(shè)備);自行車及配件(電動(dòng)自行車按本市產(chǎn)品目錄經(jīng)營(yíng))、蓄電池、橡膠制品、電動(dòng)工具、焊接材料、汽車配件、金屬材料、鋼材、建材的批發(fā)兼零售。的企業(yè)之一，為客戶提供良好的模具焊條，模具焊絲，特種焊絲，特種焊條。簡(jiǎn)敏五金制造繼續(xù)堅(jiān)定不移地走高質(zhì)量發(fā)展道路，既要實(shí)現(xiàn)基本面穩(wěn)定增長(zhǎng)，又要聚焦關(guān)鍵領(lǐng)域，實(shí)現(xiàn)轉(zhuǎn)型再突破。簡(jiǎn)敏五金制造始終關(guān)注自身，在風(fēng)云變化的時(shí)代，對(duì)自身的建設(shè)毫不懈怠，高度的專注與執(zhí)著使簡(jiǎn)敏五金制造在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: 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