<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; WORD-BREAK: break-all; LINE-HEIGHT: 18pt"><SPAN style="FONT-SIZE: 9pt; COLOR: red; FONT-FAMILY: 新宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-family: Arial">铬青铜</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 新宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-family: Arial"> 标准：<SPAN lang=EN-US>GB/T 13808-1992●</SPAN>特性及适用范围：铬青铜在常温及高温下（<SPAN lang=EN-US>400</SPAN></SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 新宋体; LETTER-SPACING: 0.4pt">℃</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 新宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-family: Arial">）具有较高的强度及硬度，导电性和导热性好，耐磨性和减摩性也很好，经时效硬化处理后，强度、硬度、导电性和导热性均显著提高；易于焊接和钎焊，在大气和淡水中具有良好的抗蚀性，高温抗氧化性好，能很好地在冷态和热态中承受压力加工；但其缺点是对缺口的敏感性较强，在缺口和尖角处造成应力集中，容易引起机械损伤，故不宜作整流子片。应用举例：制作工作温度<SPAN lang=EN-US>350</SPAN></SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 新宋体; LETTER-SPACING: 0.4pt">℃</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 新宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-family: Arial">以下的电焊机电极、电机整流子片以及其他各种在高温下工作的、要求有高的强、硬度、导电性和导性的零件，还可以双金属的形式应用于刹车盘和圆盘<SPAN lang=EN-US>●</SPAN>化学成份：铜<SPAN lang=EN-US> Cu </SPAN>：余量 镍<SPAN lang=EN-US> Ni</SPAN>：<SPAN lang=EN-US>≤0.05</SPAN>铁<SPAN lang=EN-US> Fe</SPAN>：<SPAN lang=EN-US>≤0.1</SPAN>铬<SPAN lang=EN-US> Cr</SPAN>：<SPAN lang=EN-US>0.4</SPAN>～<SPAN lang=EN-US>1.1</SPAN>注：<SPAN lang=EN-US>≤0.5(</SPAN>杂质<SPAN lang=EN-US>)●</SPAN>力学性能：注 ：棒材的纵向室温拉伸力学性能试样尺寸：直径<SPAN lang=EN-US>18</SPAN>～<SPAN lang=EN-US>160●</SPAN>热处理规范：热加工温度<SPAN lang=EN-US>900</SPAN>～<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:chmetcnv w:st="on" UnitName="℃" SourceValue="950" HasSpace="False" Negative="False" NumberType="1" TCSC="0"><SPAN lang=EN-US>950</SPAN><SPAN style="mso-bidi-font-family: 宋体">℃</SPAN></st1:chmetcnv><SPAN lang=EN-US>;</SPAN>淬火温度<SPAN lang=EN-US>950</SPAN>～<st1:chmetcnv w:st="on" UnitName="℃" SourceValue="1000" HasSpace="False" Negative="False" NumberType="1" TCSC="0"><SPAN lang=EN-US>1000</SPAN><SPAN style="mso-bidi-font-family: 宋体">℃</SPAN></st1:chmetcnv>水冷<SPAN lang=EN-US>;l</SPAN>回火温度<SPAN lang=EN-US>400</SPAN>～<st1:chmetcnv w:st="on" UnitName="℃" SourceValue="450" HasSpace="False" Negative="False" NumberType="1" TCSC="0"><SPAN lang=EN-US>450</SPAN><SPAN style="mso-bidi-font-family: 宋体">℃</SPAN></st1:chmetcnv><SPAN lang=EN-US><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></SPAN></P>