<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[TiAlN涂层麻花钻Φ5实测：单孔0.95s达标，4500rpm以上烧刃]]></title><description><![CDATA[<h2>一、产品信息</h2>
<ul>
<li><strong>被测</strong>：TiAlN 涂层麻花钻 Φ5×86，118° 顶角</li>
<li><strong>价格</strong>：约 12 元/支</li>
</ul>
<h2>二、测试条件（必填）</h2>
<ul>
<li>工件：45# 钢 12mm 板，通孔</li>
<li>参数：3500rpm，f=0.12mm/r，乳化液冷却</li>
<li>测量：单孔时间、200 孔后磨损 VB、孔口毛刺</li>
</ul>
<h2>三、实测数据</h2>
<table class="table table-bordered table-striped">
<thead>
<tr>
<th>项目</th>
<th>标称</th>
<th>实测</th>
<th>判定</th>
</tr>
</thead>
<tbody>
<tr>
<td>单孔时间</td>
<td>1.0s</td>
<td>0.95s</td>
<td>达标</td>
</tr>
<tr>
<td>200 孔磨损</td>
<td>—</td>
<td>VB=0.15mm</td>
<td>正常</td>
</tr>
<tr>
<td>孔口毛刺</td>
<td>—</td>
<td>0.08mm</td>
<td>可接受</td>
</tr>
<tr>
<td>&gt;4500rpm</td>
<td>—</td>
<td><strong>烧刃（涂层脱落）</strong></td>
<td>超限</td>
</tr>
</tbody>
</table>
<h2>四、结论</h2>
<p dir="auto">额定参数下效率与寿命均达标，涂层 200 孔后仍有效。<strong>负面发现</strong>：转速超过 4500rpm（线速度超 70m/min）时涂层快速烧损、刃口退火，钻头直接报废——该钻头不适合高转速加工，选购时注意参数上限。</p>
<h2>五、证据附件</h2>
<p dir="auto"><img src="https://guide.mj7.cn/tbk-images/26/1727.jpg" alt="麻花钻" class=" img-responsive img-markdown" /><br />
<img src="https://wiki.mj7.cn/images/materials/steel0.jpg" alt="钻孔后试板" class=" img-responsive img-markdown" /></p>
]]></description><link>https://forum.mj7.cn/topic/11690/tialn涂层麻花钻φ5实测-单孔0-95s达标-4500rpm以上烧刃</link><generator>RSS for Node</generator><lastBuildDate>Wed, 23 Sep 2026 16:01:45 GMT</lastBuildDate><atom:link href="https://forum.mj7.cn/topic/11690.rss" rel="self" type="application/rss+xml"/><pubDate>Sat, 15 Aug 2026 06:46:08 GMT</pubDate><ttl>60</ttl></channel></rss>