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              <h1 class="blog-details__title">冲压五金常用材料选用需要注意事项有哪些？</h1>
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                <li><i class="far fa-user"></i> 作者：毅鑫五金</li>
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                <li><i class="far fa-calendar"></i> 时间：<time>2022-10-18 15:59:40</time></li>
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				  <p>冲压常用材料的特性与冲压制造的关联十分紧密，其性质直接关系冲压工艺设计、冲压件质量与产品使用寿命，还影响组织均衡生产和冲压件产品成本。在选定冲压件的材料时，不但要考虑应用性能，还应满足冲压加工和后续工艺性能规定。下面毅鑫五金给大家说说冲压加工对材料基本要求及选材注意事项，一起来了解下吧。<br/></p><p><img src="/static/upload/20221018/1666080017979551.webp" title="1666080017979551.webp" alt="冲压件002.webp"/></p><p>1、具有较好的冲压成形性能</p><p>针对成形工序，例如拉伸、折弯、打段差、凸包等，材料应具有较好的冲压成形性能，即应有优良的抗裂开性、较好的贴模性和定型性，不然商品容易产生形变、裂开等，导致修模的困难。针对分离工序，则要求材料具有一定的塑性。</p><p>2、具有很高的表层质量</p><p>材料表层应光滑整平，无缺陷损害。表层质量好的材料，成形时不易破裂，不易擦破模具，制品的表层质量也罢。</p><p>3、材料的厚度公差应符合国家标准</p><p>由于一定的模具空隙仅适用于一定薄厚范围的材料，若材料厚度公差太大；不但直接关系制品的品质，还可能造成废料的出现。在校准弯折、整形等工序中，有可能因薄厚正偏差太大而造成模具或冲压机的毁坏。</p><p>1、冲压常见材料</p><p>冲压生产中Z常见的材料是金属材料（包含轻金属和稀有金属），但有时也用非金属材料。其中轻金属主要有一般碳素钢、优质碳素钢、合金工具钢、碳素工具钢、不锈钢、电工硅钢等；稀有金属主要有全铜、紫铜、黄铜、铝等；非金属材料有纸板、层压板、橡胶垫、塑胶板、胶合板和云母等。</p><p>冲压用金属材料的供应情况一般是各种规格的板料和带料。板料适合于工程模的生产，带料（卷料）用以连续模生产，也可以用于工程模的生产。板料的尺寸较大，适合于大型零件的冲压，还可以将板料按排样规格裁剪成条料后用以中小型零件的冲压；带料（又称卷料）有各种规格的总宽，进行长短可达几十米，成卷状供应，适应于连续模批量生产的自动送料。</p><p>有关各种材料的型号、规格和性能，可查看相关指南和标准。</p><p>2、冲压材料的合理采用</p><p>冲压材料的采用要考虑冲压件的应用规定、冲压工艺要求及经济性等。</p><p>(1)按冲压件的应用规定合理选料</p><p>所选材料应能使冲压件在设备或部件中正常运转，并具有一定的使用期。因此，应依据冲压件的使用条件，使所选材料满足相应强度、刚度、韧性、耐蚀性和耐温性等力方面的要求。</p><p>(2)按冲压工艺规定合理选料</p><p>对于任何一种冲压件，所选的材料应能按照其冲压工艺的需求，稳定地成型出不会裂开或发皱的合格产品，这是Z基本也是Z重要的选料规定。因此，可用下列方式合理选料。</p><p>①试冲。依据以往的生产经验及可能标准，挑选几类基本能满足冲压件应用要求的板料开展试冲，Z后选择没有裂开或皱褶的、其废品率低一种。此方法结果较为直观，但含有较大的片面性。</p><p>②分析与比照。在分析冲压形变特性的基础上，把冲压成形时的极限变形程度与板料冲压成形性能所允许采用的极限变形程度进行比较，并以此作为根据，选择适用于这种零件冲压工艺要求的板材。</p><p>此外，同一种型号或同一厚度的板材，也有冷轧和热轧差别。我国国内板材中，厚板(t&gt;4mm)为热轧板，薄板（t&lt;4mm）为冷轧板（也有热轧板）。与热轧板相比，冷轧板规格精确，误差小，</p><p>表面缺陷少，明亮，内部组织致密，冲压性能更优。(注：t在模具中一般代表薄厚，比如模版厚度、材料厚度均可以用t来表示。)</p><p>(3)按经济性规定合理选料</p><p>所选材料应在符合应用性能及冲压工艺规定的前提下，尽量质优价廉，来源便捷，经济性好，以降低冲压件成本。</p><p><br/></p>				  <p>本文由毅鑫五金整理发布，如需转载请注明来源及出处，原文地址：https://www.sitdg.com/zixun/52.html</p>
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