<?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[模具钢牌号解析：H13&#x2F;8407&#x2F;DIEVAR&#x2F;SKD61选型对比]]></title><description><![CDATA[<p dir="auto">模具钢的选型直接决定模具使用寿命和产品质量。</p>
<p dir="auto"><strong>一、对应关系</strong><br />
H13（美国ASTM）对应SKD61（日本JIS）、4Cr5MoSiV1（中国GB）<br />
8407和DIEVAR是H13系列的高端版本</p>
<p dir="auto"><strong>二、性能对比</strong></p>
<ol>
<li>高温强度（650度）：DIEVAR &gt; 8407 &gt; H13 &gt; SKD61</li>
<li>抗热疲劳：DIEVAR比H13提升50%以上</li>
<li>冲击韧性：DIEVAR &gt; 8407 &gt; SKD61 &gt; H13</li>
<li>可抛光性：8407 &gt; DIEVAR &gt; H13 &gt; SKD61</li>
<li>价格：DIEVAR最高 &gt; 8407 &gt; H13/SKD61</li>
</ol>
<p dir="auto"><strong>三、热处理工艺（H13/SKD61）</strong><br />
退火：850-880度，保温2-4h<br />
淬火：预热650-700度，加热1020-1050度，冷却6bar以上气淬<br />
淬火后硬度：HRC53-56<br />
回火（三次）：520-540度/510-530度/500-510度<br />
最终硬度：HRC45-50</p>
<p dir="auto"><strong>四、选型建议</strong></p>
<ul>
<li>一般注塑模：SKD61或H13</li>
<li>高端精密注塑模：8407</li>
<li>压铸模（寿命&gt;20万模次）：DIEVAR</li>
</ul>
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<p dir="auto">这个参数你们一般设多少？评论区说说。</p>
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