激光切割之切割金属材料
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">虽然几乎所有的金属材料在室温对红外波能量有很高的反射率,但发射处于远红外波段<SPAN lang=EN-US>10.6um</SPAN>光束的<SPAN lang=EN-US>CO2</SPAN>激光器还是成功的应用于许多金属的激光切割实践。金属对<SPAN lang=EN-US>10.6um</SPAN>激光束的起始吸收率只有<SPAN lang=EN-US>0.5%~10%</SPAN>,但是,当具有功率密度超过<SPAN lang=EN-US>106w/cm2</SPAN>的聚焦激光束照射到金属表面时,却能在微秒级的时间内很快使表面开始熔化。处于熔融态的大多数金属的吸收率急剧上升,一般可提高<SPAN lang=EN-US>60%~80%</SPAN>。从而很迅速的对板材进行加工.</SPAN></P><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><SPAN lang=EN-US><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"></SPAN> </P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">(<SPAN lang=EN-US>1</SPAN>)碳钢。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">现代激光切割系统可以切割碳钢板的最大厚度可达<SPAN lang=EN-US>20MM</SPAN>,利用氧化熔化切割机制切割碳钢的切缝可控制在满意的宽度范围,对薄板其切缝可窄至<SPAN lang=EN-US>0.1MM</SPAN>左右。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">(<SPAN lang=EN-US>2</SPAN>)不锈钢。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">激光切割对利用不锈钢薄板作为主构件的制造业来说是个有效的加工工具。在严格控制激光切割过程中的热输入措施下,可以限制切边热影响区变得很小,从而很有效的保持此类材料的良好耐腐蚀性。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">(<SPAN lang=EN-US>3</SPAN>)合金钢。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">大多数合金结构钢和合金工具钢都能用激光切割方法获得良好的切边质量。即使是一些高强度材料,只要工艺参数控制得当,可获得平直、无粘渣切边。不过,对于含钨的高速工具钢和热模钢,激光切割时会有熔蚀和粘渣现象发生。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">(<SPAN lang=EN-US>4</SPAN>)铝及合金。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">铝切割属于熔化切割机制,所用辅助气体主要用于从切割区吹走熔融产物,通常可获得较好的切面质量。对某些铝合金来说,要注意预防切缝表面晶间微裂缝产生。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">(<SPAN lang=EN-US>5</SPAN>)铜及合金。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">纯铜(紫铜)由于太高的反射率,基本上不能用<SPAN lang=EN-US>CO2</SPAN>激光束切割。黄铜(铜合金)使用较高激光功率,辅助气体采用空气或氧,可以对较薄的板材进行切割。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">(<SPAN lang=EN-US>6</SPAN>)钛及合金。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">纯钛能很好耦合聚焦激光束转化的热能,辅助气体采用氧时化学反应激烈,切割速度较快,但易在切边生成氧化层,不小心还会引起过烧。为稳妥起见,采用空气作为辅助气体比较好,以确保切割质量。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">飞机制造业常用的钛合金激光切割质量较好,虽然切缝底部会有少许粘渣,但很容易清除。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">(<SPAN lang=EN-US>7</SPAN>)镍合金。<SPAN lang=EN-US> <o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">镍基合金也称超级合金,品种很多。其中大多数都可实施氧化熔化切割。</SPAN></SPAN></P>
Re: 激光切割之切割金属材料
斑竹辛苦了!谢谢Re: 激光切割之切割金属材料
谢谢支持!!希望大家在这里可以得到提高
Re: 激光切割之切割金属材料
多謝樓主了﹗關注ing
Re: 激光切割之切割金属材料
坛子里的朋友帮我来顶呀Re: 激光切割之切割金属材料
碳钢。不锈钢。 铝及敷铝锌板,我切割的很多?其他的没有切割过?Re: 激光切割之切割金属材料
钛金有没有切割过Re: 激光切割之切割金属材料
钛金没有不知道是什么样子___在是在切割铝