电渣焊中焊接电压、送丝速度与母材含碳量的推荐值
<DIV align=center>焊接电压、送丝速度与母材含碳量推荐值</DIV><DIV align=center>
<TABLE cellSpacing=0 cellPadding=0 width="90%" border=1>
<TBODY>
<TR>
<TD width=160 rowSpan=3>
<DIV align=center><B>母材金属的含碳量</B><B></B></DIV></TD>
<TD width=840 colSpan=6>
<DIV align=center><B>单根焊丝所能焊接的母材板厚</B><B>(mm)</B><B></B></DIV></TD></TR>
<TR>
<TD colSpan=2>
<DIV align=center><B>50</B><B></B></DIV></TD>
<TD colSpan=2>
<DIV align=center><B>70</B><B></B></DIV></TD>
<TD colSpan=2>
<DIV align=center><B>100</B><B></B></DIV></TD></TR>
<TR>
<TD>
<DIV align=center><B>送丝速度临界值</B><B><BR>(m/h)</B><B></B></DIV></TD>
<TD>
<DIV align=center><B>最小焊接电压</B><B><BR>(V)</B><B></B></DIV></TD>
<TD>
<DIV align=center><B>送丝速度临界值</B><B><BR>(m/h)</B><B></B></DIV></TD>
<TD>
<DIV align=center><B>最小焊接电压</B><B><BR>(V)</B><B></B></DIV></TD>
<TD>
<DIV align=center><B>送丝速度临界值</B><B><BR>(m/h)</B><B></B></DIV></TD>
<TD>
<DIV align=center><B>最小焊接电压</B><B><BR>(V)</B><B></B></DIV></TD></TR>
<TR>
<TD width=160>
<DIV align=center>＜0.13</DIV></TD>
<TD width=150>
<DIV align=center>280</DIV></TD>
<TD width=150>
<DIV align=center>45-47</DIV></TD>
<TD width=150>
<DIV align=center>420</DIV></TD>
<TD width=150>
<DIV align=center>50-52</DIV></TD>
<TD width=150>
<DIV align=center>500</DIV></TD>
<TD width=150>
<DIV align=center>54-56</DIV></TD></TR>
<TR>
<TD width=160>
<DIV align=center>0.14-0.17</DIV></TD>
<TD width=150>
<DIV align=center>250</DIV></TD>
<TD width=150>
<DIV align=center>44-46</DIV></TD>
<TD width=150>
<DIV align=center>365</DIV></TD>
<TD width=150>
<DIV align=center>49-51</DIV></TD>
<TD width=150>
<DIV align=center>480</DIV></TD>
<TD width=150>
<DIV align=center>54-56</DIV></TD></TR>
<TR>
<TD width=160>
<DIV align=center>0.18-0.22</DIV></TD>
<TD width=150>
<DIV align=center>230</DIV></TD>
<TD width=150>
<DIV align=center>43-45</DIV></TD>
<TD width=150>
<DIV align=center>335</DIV></TD>
<TD width=150>
<DIV align=center>48-50</DIV></TD>
<TD width=150>
<DIV align=center>440</DIV></TD>
<TD width=150>
<DIV align=center>51-54</DIV></TD></TR>
<TR>
<TD width=160>
<DIV align=center>0.23-0.26</DIV></TD>
<TD width=150>
<DIV align=center>220</DIV></TD>
<TD width=150>
<DIV align=center>42-44</DIV></TD>
<TD width=150>
<DIV align=center>290</DIV></TD>
<TD width=150>
<DIV align=center>46-48</DIV></TD>
<TD width=150>
<DIV align=center>380</DIV></TD>
<TD width=150>
<DIV align=center>50-52</DIV></TD></TR>
<TR>
<TD width=160>
<DIV align=center>0.27-0.30</DIV></TD>
<TD width=150>
<DIV align=center>170</DIV></TD>
<TD width=150>
<DIV align=center>42</DIV></TD>
<TD width=150>
<DIV align=center>250</DIV></TD>
<TD width=150>
<DIV align=center>45-47</DIV></TD>
<TD width=150>
<DIV align=center>320</DIV></TD>
<TD width=150>
<DIV align=center>48-50</DIV></TD></TR>
<TR>
<TD width=160>
<DIV align=center>0.31-0.35</DIV></TD>
<TD width=150>
<DIV align=center>155</DIV></TD>
<TD width=150>
<DIV align=center>43-45</DIV></TD>
<TD width=150>
<DIV align=center>225</DIV></TD>
<TD width=150>
<DIV align=center>43-45</DIV></TD>
<TD width=150>
<DIV align=center>290</DIV></TD>
<TD width=150>
<DIV align=center>48-50</DIV></TD></TR>
<TR>
<TD width=160>
<DIV align=center>0.36-0.40</DIV></TD>
<TD width=150>
<DIV align=center>140</DIV></TD>
<TD width=150>
<DIV align=center>44-46</DIV></TD>
<TD width=150>
<DIV align=center>200</DIV></TD>
<TD width=150>
<DIV align=center>43-45</DIV></TD>
<TD width=150>
<DIV align=center>260</DIV></TD>
<TD width=150>
<DIV align=center>46-48</DIV></TD></TR></TBODY></TABLE></DIV>
<DIV align=center> </DIV>
<DIV>注: 1母材金属中其它化学成分在碳素结构钢国家标准规定范围之内。</DIV>
<DIV> 2.送丝速度临界值系指在焊接时不产生裂纹的最大送丝速度。</DIV>
<DIV> 3.最小焊接电压是指在本试验所采用的其它工艺参数条件下,保证母材熔深不小于4～5mm 所需的最低焊接电压值 。</DIV>
<DIV> 4.其它工艺参数如下:装配间隙28±2mm; 焊丝直径3mm;焊丝干伸长度65～70mm;焊丝横向摆动速度28～40m/h;焊丝末摆过区间12～14mm。</DIV>
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