<?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[Used EDM Machine Inspection Checklist for Buyers]]></title><description><![CDATA[<p dir="auto">&lt;p&gt;Buying a used EDM machine? Here is what to inspect before purchase:&lt;/p&gt;</p>
<p dir="auto">&lt;p&gt;&lt;strong&gt;General Condition&lt;/strong&gt;&lt;/p&gt;<br />
&lt;ul&gt;<br />
&lt;li&gt;Check machine level - verify within 0.02mm/m&lt;/li&gt;<br />
&lt;li&gt;Inspect way covers for dents and corrosion&lt;/li&gt;<br />
&lt;li&gt;Run a test fire - listen for unusual sounds from servo motor&lt;/li&gt;<br />
&lt;li&gt;Check all axis movement for smoothness and backlash&lt;/li&gt;<br />
&lt;/ul&gt;</p>
<p dir="auto">&lt;p&gt;&lt;strong&gt;Power Supply and Dielectric System&lt;/strong&gt;&lt;/p&gt;<br />
&lt;ul&gt;<br />
&lt;li&gt;Verify power supply voltage matches your facility&lt;/li&gt;<br />
&lt;li&gt;Test dielectric pump pressure (should be 2-4 bar)&lt;/li&gt;<br />
&lt;li&gt;Inspect filters - replace if dirty&lt;/li&gt;<br />
&lt;li&gt;Check resin tank condition and capacity&lt;/li&gt;<br />
&lt;/ul&gt;</p>
<p dir="auto">&lt;p&gt;&lt;strong&gt;CNC Controller and Software&lt;/strong&gt;&lt;/p&gt;<br />
&lt;ul&gt;<br />
&lt;li&gt;Power cycle twice - watch for alarm codes on startup&lt;/li&gt;<br />
&lt;li&gt;Verify backup battery voltage (under 3V means replace soon)&lt;/li&gt;<br />
&lt;li&gt;Check that all parameters are saved (ask for parameter backup)&lt;/li&gt;<br />
&lt;li&gt;Load a sample NC program and dry run&lt;/li&gt;<br />
&lt;/ul&gt;</p>
<p dir="auto">&lt;p&gt;&lt;strong&gt;Critical Measurements&lt;/strong&gt;&lt;/p&gt;<br />
&lt;ul&gt;<br />
&lt;li&gt;X/Y/Z axis accuracy: check with laser interferometer&lt;/li&gt;<br />
&lt;li&gt;Table flatness: should be within 0.01mm&lt;/li&gt;<br />
&lt;li&gt;Spindle/head alignment&lt;/li&gt;<br />
&lt;li&gt;Wire tension gauge reading (for wire EDM)&lt;/li&gt;<br />
&lt;/ul&gt;</p>
<p dir="auto">&lt;p&gt;&lt;strong&gt;Paperwork to Request&lt;/strong&gt;&lt;/p&gt;<br />
&lt;ul&gt;<br />
&lt;li&gt;Maintenance logs for past 2 years&lt;/li&gt;<br />
&lt;li&gt;List of spare parts included&lt;/li&gt;<br />
&lt;li&gt;Original manual (electronic copy acceptable)&lt;/li&gt;<br />
&lt;li&gt;List of recent repairs&lt;/li&gt;<br />
&lt;/ul&gt;</p>
<p dir="auto">&lt;p&gt;Always ask for a test run cutting a sample part before committing.&lt;/p&gt;</p>
<p dir="auto">&lt;p&gt;<img src="https://forum.mj7.cn/assets/plugins/nodebb-plugin-emoji/emoji/android/1f4ce.png?v=k0o2a4s5i30" class="not-responsive emoji emoji-android emoji--paperclip" title=":paperclip:" alt="📎" /> &lt;strong&gt;延伸阅读&lt;/strong&gt;&lt;/p&gt;<br />
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<p dir="auto">&lt;hr&gt;<br />
&lt;p&gt;踩过坑的来评论区说说。&lt;/p&gt;</p>
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