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不鏽鋼焊條試用注意事項(xiàng)

日期:2025-05-10 15:21
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摘要:<span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;"><span style="font-size:small;">不鏽鋼焊條試用注意事項(xiàng)</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">1</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、鉻不鏽鋼具有一定的耐蝕</span><span style="font-family:'Times New Roman';"><span lang="EN-US">(</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">氧化性酸、有機(jī)酸、氣蝕</span><span style="font-family:'Times New Roman';"><span lang="EN-US">)</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、耐熱和耐磨性能。通常用於電站、化工、石油等設(shè)備材料。鉻不鏽鋼焊接性較差,應(yīng)注意焊接工藝、熱處理?xiàng)l件及選用合適電焊條。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">2</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、鉻</span><span style="font-family:'Times New Roman';"><span lang="EN-US">13</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">不鏽鋼焊後硬化性較大,容易產(chǎn)生裂紋。若采用同類(lèi)型的鉻不鏽鋼焊條</span><span style="font-family:'Times New Roman';"><span lang="EN-US">(G202</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、</span><span style="font-family:'Times New Roman';"><span lang="EN-US">G207)</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">焊接,必須進(jìn)行</span><span style="font-family:'Times New Roman';"><span lang="EN-US">300</span></span><span style="font-family:宋體;mso-bidi-font-family:宋體;">℃</span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">以上的預(yù)熱和焊後</span><span style="font-family:'Times New Roman';"><span lang="EN-US">700</span></span><span style="font-family:宋體;mso-bidi-font-family:宋體;">℃</span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">左右的緩冷處理。若焊件不能進(jìn)行焊後熱處理,則應(yīng)選用鉻鎳不鏽鋼焊條</span><span style="font-family:'Times New Roman';"><span lang="EN-US">(A107</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、</span><span style="font-family:'Times New Roman';"><span lang="EN-US">A207)</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">3</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、鉻</span><span style="font-family:'Times New Roman';"><span lang="EN-US">17</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">不鏽鋼,為改善耐蝕性能及焊接性而適當(dāng)增加適量穩(wěn)定性元素</span><span style="font-family:'Times New Roman';"><span lang="EN-US">Ti</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、</span><span style="font-family:'Times New Roman';"><span lang="EN-US">Nb</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、</span><span style="font-family:'Times New Roman';"><span lang="EN-US">Mo</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">等,焊接性較鉻</span><span style="font-family:'Times New Roman';"><span lang="EN-US">13</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">不鏽鋼好一些。采用同類(lèi)型的鉻不鏽鋼焊條</span><span style="font-family:'Times New Roman';"><span lang="EN-US">(G302</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、</span><span style="font-family:'Times New Roman';"><span lang="EN-US">G307)</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">時(shí),應(yīng)進(jìn)行</span><span style="font-family:'Times New Roman';"><span lang="EN-US">200</span></span><span style="font-family:宋體;mso-bidi-font-family:宋體;">℃</span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">以上的預(yù)熱和焊後</span><span style="font-family:'Times New Roman';"><span lang="EN-US">800</span></span><span style="font-family:宋體;mso-bidi-font-family:宋體;">℃</span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">左右的回火處理。若焊件不能進(jìn)行熱處理,則應(yīng)選用鉻鎳不鏽鋼焊條</span><span style="font-family:'Times New Roman';"><span lang="EN-US">(A107</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、</span><span style="font-family:'Times New Roman';"><span lang="EN-US">A207)</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">4</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、鉻鎳不鏽鋼焊條具有良好耐腐蝕性和抗氧化性,廣泛應(yīng)用於化工、化肥、石油、醫(yī)療機(jī)械製造。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">5</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、鉻鎳不鏽鋼焊接時(shí),受到重複加熱析出碳化物,降低耐腐蝕性和力學(xué)性能。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">6</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、鉻鎳不鏽鋼藥皮有鈦鈣型和低氫型。鈦鈣型可用於交直流,但交流焊時(shí)熔深較淺,同時(shí)容易發(fā)紅,故儘可能采用直流電源。直徑</span><span style="font-family:'Times New Roman';"><span lang="EN-US">4.0</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">及以下可用於全位置焊件,</span><span style="font-family:'Times New Roman';"><span lang="EN-US">5.0</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">及以上用於平焊及平角焊。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">7</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、焊條使用時(shí)應(yīng)保持乾燥,鈦鈣型應(yīng)經(jīng)</span><span style="font-family:'Times New Roman';"><span lang="EN-US">150</span></span><span style="font-family:宋體;mso-bidi-font-family:宋體;">℃</span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">乾燥</span><span style="font-family:'Times New Roman';"><span lang="EN-US">1</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">小時(shí),低氫型應(yīng)經(jīng)</span><span style="font-family:'Times New Roman';"><span lang="EN-US">200</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">~</span><span style="font-family:'Times New Roman';"><span lang="EN-US">250</span></span><span style="font-family:宋體;mso-bidi-font-family:宋體;">℃</span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">乾燥</span><span style="font-family:'Times New Roman';"><span lang="EN-US">1</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">小時(shí)</span><span style="font-family:'Times New Roman';"><span lang="EN-US">(</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">不能多次重複烘乾,否則藥皮容易開(kāi)裂剝落</span><span style="font-family:'Times New Roman';"><span lang="EN-US">)</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">,防止焊條藥皮粘油及其它臟物,以免致使焊縫增加含碳量和影響焊件質(zhì)量。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">8</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、為防止由於加熱而產(chǎn)生睛間腐蝕,焊接電流不宜太大,比碳鋼焊條較少</span><span style="font-family:'Times New Roman';"><span lang="EN-US">20%</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">左右,電弧不宜過(guò)長(zhǎng),層間快冷,以窄焊道為宜。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span lang="EN-US"><span style="font-family:'Times New Roman';font-size:small;">&nbsp;</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span>

不鏽鋼焊條試用注意事項(xiàng)

1、鉻不鏽鋼具有一定的耐蝕(氧化性酸、有機(jī)酸、氣蝕)、耐熱和耐磨性能。通常用於電站、化工、石油等設(shè)備材料。鉻不鏽鋼焊接性較差,應(yīng)注意焊接工藝、熱處理?xiàng)l件及選用合適電焊條。

2、鉻13不鏽鋼焊後硬化性較大,容易產(chǎn)生裂紋。若采用同類(lèi)型的鉻不鏽鋼焊條(G202、G207)焊接,必須進(jìn)行300以上的預(yù)熱和焊後700左右的緩冷處理。若焊件不能進(jìn)行焊後熱處理,則應(yīng)選用鉻鎳不鏽鋼焊條(A107、A207)。

3、鉻17不鏽鋼,為改善耐蝕性能及焊接性而適當(dāng)增加適量穩(wěn)定性元素Ti、NbMo等,焊接性較鉻13不鏽鋼好一些。采用同類(lèi)型的鉻不鏽鋼焊條(G302、G307)時(shí),應(yīng)進(jìn)行200以上的預(yù)熱和焊後800左右的回火處理。若焊件不能進(jìn)行熱處理,則應(yīng)選用鉻鎳不鏽鋼焊條(A107、A207)

4、鉻鎳不鏽鋼焊條具有良好耐腐蝕性和抗氧化性,廣泛應(yīng)用於化工、化肥、石油、醫(yī)療機(jī)械製造。

5、鉻鎳不鏽鋼焊接時(shí),受到重複加熱析出碳化物,降低耐腐蝕性和力學(xué)性能。

6、鉻鎳不鏽鋼藥皮有鈦鈣型和低氫型。鈦鈣型可用於交直流,但交流焊時(shí)熔深較淺,同時(shí)容易發(fā)紅,故儘可能采用直流電源。直徑4.0及以下可用於全位置焊件,5.0及以上用於平焊及平角焊。

7、焊條使用時(shí)應(yīng)保持乾燥,鈦鈣型應(yīng)經(jīng)150乾燥1小時(shí),低氫型應(yīng)經(jīng)200250乾燥1小時(shí)(不能多次重複烘乾,否則藥皮容易開(kāi)裂剝落),防止焊條藥皮粘油及其它臟物,以免致使焊縫增加含碳量和影響焊件質(zhì)量。

8、為防止由於加熱而產(chǎn)生睛間腐蝕,焊接電流不宜太大,比碳鋼焊條較少20%左右,電弧不宜過(guò)長(zhǎng),層間快冷,以窄焊道為宜。

 

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