TIG焊接与切割技巧
<P><STRONG><FONT size=2> TIG</FONT><A href=" http://www.mechnet.com.cn"><FONT size=2>焊接</FONT></A><FONT size=2>与切割技巧:</FONT></STRONG></P><H1 style="MARGIN: auto 0cm; WORD-BREAK: break-all; LINE-HEIGHT: 18pt"><FONT size=2><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold"><FONT face=宋体> </FONT></SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold">1</SPAN><FONT face=宋体><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold">、非常适合薄板焊接——干净的焊接过程可以获得漂亮的焊接外观。</SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></FONT></FONT></H1>
<H1 style="MARGIN: auto 0cm; WORD-BREAK: break-all; LINE-HEIGHT: 18pt"><FONT size=2><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold"><FONT face=宋体> </FONT></SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold">2</SPAN><FONT face=宋体><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold">、焊接钢材、铝材的时候使用氩气作为保护气体。</SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold"><o:p></o:p></SPAN></FONT></FONT></H1>
<H1 style="MARGIN: auto 0cm; WORD-BREAK: break-all; LINE-HEIGHT: 18pt"><FONT size=2><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold"><FONT face=宋体> </FONT></SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold">3</SPAN><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold"><FONT face=宋体>、使用直流正极性</FONT></SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold">(DCEN)</SPAN><FONT face=宋体><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold">焊接钢和不锈钢，使用交流焊接铝。</SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold"><o:p></o:p></SPAN></FONT></FONT></H1>
<H1 style="MARGIN: auto 0cm; WORD-BREAK: break-all; LINE-HEIGHT: 18pt"><FONT size=2><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold"><FONT face=宋体> </FONT></SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold">4</SPAN><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold"><FONT face=宋体>、在</FONT></SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold">TIG</SPAN><FONT face=宋体><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold">焊中一直使用推枪技法。</SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold"><o:p></o:p></SPAN></FONT></FONT></H1>
<H1 style="MARGIN: auto 0cm; WORD-BREAK: break-all; LINE-HEIGHT: 18pt"><FONT size=2><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold"><FONT face=宋体> </FONT></SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold">5</SPAN><FONT face=宋体><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold">、将钨电极的尺寸和套电嘴的尺寸相匹配。</SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold"><o:p></o:p></SPAN></FONT></FONT></H1>
<H1 style="MARGIN: auto 0cm; WORD-BREAK: break-all; LINE-HEIGHT: 18pt"><FONT size=2><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold"><FONT face=宋体> </FONT></SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold">6</SPAN><FONT face=宋体><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold">、焊接铝材——应使用纯钨电极。这样能在交流焊接时，钨极易形成球状尖端。</SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold"><o:p></o:p></SPAN></FONT></FONT></H1>
<H1 style="MARGIN: auto 0cm; WORD-BREAK: break-all; LINE-HEIGHT: 18pt"><FONT size=2><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold"><FONT face=宋体> </FONT></SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold">7</SPAN><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold"><FONT face=宋体>、焊接钢和不锈钢——应使用含</FONT></SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: Arial; mso-bidi-font-weight: bold">2%</SPAN><SPAN style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; COLOR: black; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-bidi-font-weight: bold"><FONT face=宋体>钍的钨电极。在直流正极焊时应把钨电极磨尖。</FONT></SPAN></FONT></H1>
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