冲压中下料、冲孔和冲裁有什么区别?
冲压中下料、冲孔和冲裁有什么区别?

最直接的区别在于被去除材料的去向:落料(blanking)产生一个成品零件(即落料件),并丢弃废料(即孔洞);冲孔(piercing)产生一个孔,并丢弃冲孔废料(即内部小圆片);而冲裁(punching)是一个更广泛的术语,涵盖这两种操作,即冲头迫使材料通过凹模。在精密制造中,落料用于创建零件的外部轮廓,冲孔用于创建内...

什么是金属冲压表面处理?冲压件表面处理选项详解
什么是金属冲压表面处理?冲压件表面处理选项详解

金属冲压表面光洁度是指冲压件在成形后可测量的纹理和外观状态,通常范围从0.8 µm Ra的原始轧制表面到0.05 µm Ra的镜面抛光表面。标准选项包括冲压态、拉丝、喷砂、阳极氧化、粉末喷涂和电镀表面处理,每种方案在成本和性能上各有优劣。对于大多数精密应用,冲压态表面配合±0.1 mm的公差即可满足要求,而外观可见的消...

什么是冲压压力机吨位,如何计算?
什么是冲压压力机吨位,如何计算?

冲压压力机吨位是指压力机在单次行程中能够施加的最大力,以美吨(短吨)或公吨为单位,用于冲裁、成形或拉深金属板材。计算所需吨位时,需将冲裁力(周长 × 厚度 × 抗剪强度)与弯曲或成形力相加,然后加上10-20%的安全系数,以涵盖材料厚度波动和模具磨损等变量。例如,在低碳钢(抗剪强度345 MPa)上冲裁一个1.5毫米厚...

金属冲压中最重要的是哪些材料性能?
金属冲压中最重要的是哪些材料性能?

金属冲压中最关键的材料性能是屈服强度、抗拉强度、伸长率、硬度和厚度公差,因为它们直接决定可弯性、回弹、模具磨损和尺寸稳定性。例如,伸长率低于10%的材料在紧密半径弯曲时会产生裂纹,而屈服强度超过500 MPa的材料则需要显著更高的冲压吨位,并导致更大的回弹。如果选择的材料性能与零件几何形状和冲压工艺不匹配,将导致零件报...

金属冲压的最低订购量是多少?MOQ详解
金属冲压的最低订购量是多少?MOQ详解

金属冲压的最低起订量(MOQ)通常为:级进模生产500至1,000件,多工位传递模冲压1,000至5,000件,而使用简易模具的原型或小批量冲压可低至100件。然而,在东莞BQUQ,我们常规可承接的MOQ为:简单平面落料件300件,复杂深拉延件2,000件,具体取决于材料厚度、模具成本摊销和零件几何形状。真正的MOQ并...


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