需要钨钢冲针，中间加工成3mm的孔，有图纸，哪里可以加工？质量一定要好...
推荐回答（1个）
根据不同冲压加工材料所设计的冲压模具有所不同，基本都是通过多个步骤的冲压加工来完成一个产品或者半成品的作业。不同的步骤所需要的硬质合金冲针形状规格各异，这就设计到配套冲压模具的异形冲针订做生产。硬质合金异形冲针是根据形状的不同，用途的不同,可以分为：1.引导冲针又叫引导冲头简称引导冲，根据冲压床的需要可以有有各种造型，有A型B型HB型TAPP型T**P型等等。2.子母冲针又叫子母冲头简称子母冲，在冲头的顶端有一个小的突起，不知道名字是什么来历，或许是因为冲头顶端的突起吧。字母冲针可以分为标准型A型JS**型等型号。3.还有抽牙冲针、检知梢、六角冲针、椭圆冲针、成型冲针、扇型冲头、异形冲针、高速钢冲针、钨钢冲针等。硬质合金冲针订做的重点还设计到产品的精度和一致性,其物理参数如下：1、CO含量：10%-20%。2、密度g/cm3：14.0～14.5。3、硬度：87-92.0HRA。4、晶粒度：0.6-1.2um。5、抗弯强度：4000MPa。6、弹性模量GPa：490。7、热胀系数10-6/0C：5.4。8、硬质合金冲头外形尺寸规格按图纸定制，精度要求达到±0.002。高精密模具配套使用的硬质合金冲针精度要求非常高，还有产品的一致性，要求批量生产的每一款冲针都必须严格按照尺寸精度公差要求，能够实现模具使用寿命最大化。作为精密模具配套使用的硬质合金冲针，产品的一致性是个关键因素，这将直接影响到模具的使用寿命和产品的尺寸精度。冲压模具工作都是持续作业，对冲针的使用寿命要求就成为了重点。硬质合金冲针根据冲压的材质及厚度的不同，要选择不同的合金材料，一般情况下，被冲压产品越厚，硬质合金要选择硬度越低韧性越好的型号。材质越硬，硬质合金相对来说也要选择稍微硬度低一些的型号，这样可以有效的避免冲针被冲缺。而冲压比较薄的板材，或是硬度不高的，这种产品的孔加工，硬质合金冲针可用硬度高一些的，这样就可以提高冲针的使用寿命。除了硬质合金材料选择之外，影响到冲针的质量与使用寿命的重要因素之一是冷冲模之间的间隙是否均匀。在硬质合金冲针装配的过程中，一定要保证凸、凹模间隙一致。为了保证凸模与凹模的间隙均匀，必须根据图纸要求，先确定其中一件(凸模或凹模)的位置，然后以该件为基准，找正间隙，来确定另一件的准确位置。有些冲压模具一次性装配很多件硬质合金冲针，这就要求模具设计的科学性和合理性。装配冲针时，控制凸模与凹模间隙均匀的方法主要有以下几种：1.透光法：放置安装好上模和下模，用灯或手电简照射，在下模落料孔中观察透光。2.垫片法：在凹模刃口四周厚薄均匀，厚度等于凸、凹模单边间隙的铜片或纸片，将凸模插入相应的凹模型孔内，观察凸模与垫片的松紧程度．并用手锤轻轻敲打固定板，使凸起与垫片松紧程度一致为止，调整合适后，紧固上模。
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