CN109228562A - 金属切削用盖板 - Google Patents

金属切削用盖板 Download PDF

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CN109228562A
CN109228562A CN201810728521.7A CN201810728521A CN109228562A CN 109228562 A CN109228562 A CN 109228562A CN 201810728521 A CN201810728521 A CN 201810728521A CN 109228562 A CN109228562 A CN 109228562A
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马广兴
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Suzhou Guangxing Mold Co Ltd
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Abstract

本案涉及一种金属切削用盖板，包括树脂片层和设于树脂片层两面的金属层；树脂片层包括以下重量份的材料：聚酰胺树脂30～40重量份；聚醚醚酮15～20重量份；丙烯腈‑丁二烯‑苯乙烯共聚物10～12重量份；甲基丙烯酸十二氟庚酯4～8重量份；润滑剂10～20重量份；增强剂6～12重量份。本发明金属切削用盖板，包括树脂片层和设于树脂片层两面的金属层，在进行切削加工时，通过将本发明的盖板配置于被切削加工材料的钻头进入面，孔的内壁粗糙度变小，并且钻头的磨耗量也变小。

Description

金属切削用盖板
技术领域
本发明涉及金属切削技术领域，尤其涉及一种金属切削用盖板。
背景技术
在模具加工中，将金属固定于机械设备部件等的结构体时，需要进行切削加工、尤其是在金属中开通多个用于贯通联接元件的孔的开孔加工；飞机的机体结构用材料(结构材料)的主体为金属材料，铝合金占据大部分；另外，在机体结构中可能达到更高温度的部位、例如喷气排气部位或再燃装置附近使用作为耐热合金的钛合金、不锈钢等。进而，将来随着飞机高速化的推进，现有铝合金的强度会因空气动力加热而降低。因此，可以预见到今后作为机体结构的主体要使用更硬的钛合金、不锈钢作为结构材料。为了用螺栓连接金属材料之间，需要利用钻头对这些构成飞机机体的结构材料进行开孔加工，但是即便使用金属专用的钻头，钻头的开孔加工寿命也短，使用一般的钻头时，钻头的开孔加工寿命极其短。另外，随着加工孔数的增加，钻头的刃产生磨耗而加工孔的品质降低。具体而言，所加工的孔的内径容易变小、在钻头贯通的出口部容易产生毛刺。
发明内容
针对现有技术中存在的技术问题，本案提供一种在金属的切削加工中通过以非切削工具的其它途径来提高金属的加工性，提供一种盖板，其与现有的金属的开孔加工相比较，通过降低对于钻头的负荷来抑制钻头的磨耗，从而能够实现钻头开孔加工寿命的长寿命化。
为实现上述目的，本案通过以下技术方案实现：
一种金属切削用盖板，其中，包括树脂片层和设于所述树脂片层两面的金属层；
其中，所述树脂片层包括以下重量份的材料：
优选的是，所述的金属切削用盖板，其中，所述润滑剂包括40～50wt％十二烷基十四醇和50～60wt％蒙旦蜡。
优选的是，所述的金属切削用盖板，其中，所述增强剂包括65～70wt％氮化钛和30～35wt％碳化铬。
优选的是，所述的金属切削用盖板，其中，所述树脂片层还包括3～5重量份玻璃纤维。
优选的是，所述的金属切削用盖板，其中，所述金属层上还设有抗菌层。
优选的是，所述的金属切削用盖板，其中，所述抗菌层包括70～80wt％碳纤维、10～15wt％竹纤维、5～8wt％四氟乙烯-六氟丙烯共聚物和3～5wt％Cr3AlC。
优选的是，所述的金属切削用盖板，其中，所述金属层为铝箔层，所述铝箔层的厚度为80～120μm。
本发明的有益效果是：
(1)本发明金属切削用盖板，包括树脂片层和设于树脂片层两面的金属层，在进行切削加工时，通过将本发明的盖板配置于被切削加工材料的钻头进入面，孔的内壁粗糙度变小，并且钻头的磨耗量也变小。
(2)本发明树脂片层以聚酰胺树脂作为主体；通过加入丙烯腈-丁二烯-苯乙烯共聚物提高其抗冲击性能；通过加入甲基丙烯酸十二氟庚酯使其柔韧性增强；十二烷基十四醇和蒙旦蜡通过协同作为润滑剂，使润滑性能达到最佳；通过加入增强剂提高其抗热冲击性能、耐磨性能、耐腐蚀性能和抗氧化性能，作为本案又一实施例，其中，树脂片层还包括3～5重量份玻璃纤维。通过加入玻璃纤维提高其抗拉强度和耐热性。
具体实施方式
下面结合实施例对本发明做进一步的详细说明，以令本领域技术人员参照说明书文字能够据以实施。
本案提出一实施例的金属切削用盖板，包括树脂片层和设于树脂片层两面的金属层；进行钻头开孔加工时，若在钻头进入面的最外表层配置有金属层，则对金属进行切削加工时，能够抑制金属切屑卷绕于钻头并因旋转的切屑导致树脂片被切挖。结果，能够充分地发挥润滑性，降低钻头磨耗的效果提高。
其中，树脂片层包括以下重量份的材料：
聚酰胺树脂具有良好的力学性能、耐热性、耐磨损性、耐化学药品性和自润滑性；聚醚醚酮具有机械强度高、耐高温、耐冲击、阻燃、耐酸碱、耐水解、耐磨、耐疲劳、耐辐照性能；通过加入丙烯腈-丁二烯-苯乙烯共聚物提高其抗冲击性能；通过加入甲基丙烯酸十二氟庚酯使其柔韧性增强。
作为本案另一实施例，其中，润滑剂包括40～50wt％十二烷基十四醇和50～60wt％蒙旦蜡。通过加入润滑剂提高盖板的润滑性、延长切削工具的加工寿命的效果，十二烷基十四醇和蒙旦蜡通过协同作用，使润滑性能达到最佳。
作为本案又一实施例，其中，增强剂包括65～70wt％氮化钛和30～35wt％碳化铬。通过加入增强剂提高其抗热冲击性能、耐磨性能、耐腐蚀性能和抗氧化性能，氮化钛莫氏硬度8-9，抗热冲击性好，氮化钛熔点比大多数过渡金属氮化物的熔点高，而密度却比大多数金属氮化物低，因此是具有优异的耐热性能，化学稳定性好；碳化铬具有耐磨、耐腐蚀和抗氧化性能。
作为本案又一实施例，其中，树脂片层还包括3～5重量份玻璃纤维。通过加入玻璃纤维提高其抗拉强度和耐热性。
作为本案又一实施例，其中，金属层上还设有抗菌层。通过设置抗菌层，防止细菌的附着，降低对孔壁的污染。
作为本案又一实施例，其中，抗菌层包括70～80wt％碳纤维、10～15wt％竹纤维、5～8wt％四氟乙烯-六氟丙烯共聚物和3～5wt％Cr3AlC。碳纤维、竹纤维、四氟乙烯-六氟丙烯共聚物和Cr3AlC协同作为抗菌层，使抗菌层的抗菌效果达到最佳。
作为本案又一实施例，其中，金属层为铝箔层，所述铝箔层的厚度为80～120μm。通过设置金属层，防止热熔融的形成树脂层的树脂组合物粘合于加工孔的上部和内部的效果。
下面列出一些具体的实施例和对比例：
用夹具将如上述制作的各盖板固定在被切削加工材料的切削工具(硬质合金钻头)进入面。对于实施例1-3和对比例1-5，以被切削加工材料的切削加工面与盖板的铝箔接触的方式进行配置。利用硬质合金钻头的切削加工条件以转速为6000rpm、进给速度为450mm/分钟、其它为下表所示的条件进行开孔加工。关于实施例1-3～对比例1-5，对于孔的内壁粗糙度、钻头的磨耗量进行评价。将该评价结果示于下表。
下面列出实施例和对比例的性能测试结果
性能测试：
1)钻头的磨耗量的测定
利用激光显微镜取得钻头侧面的图像，在图像上测量钻头刃尖后隙面中的磨耗截面积，并乘以钻头后隙面的磨耗长度，由此计算出磨耗体积。
2)孔的内径的测定
金属的孔内径使用内径用电子测微计，根据其与标准试验片的偏差以1·m的分辨率进行测量。孔内径在钻头开孔加工中的入口部、中央部和出口部是不同的，因此对于12.5mm的板厚而言，在自入口起2.9mm、自入口起6.2mm、自入口起9.5mm的深度位置测定内径，将它们分别定义为入口部、中央部和出口部的内径而进行测量。
尽管本发明的实施方案已公开如上，但其并不仅仅限于说明书和实施方式中所列运用，它完全可以被适用于各种适合本发明的领域，对于熟悉本领域的人员而言，可容易地实现另外的修改，因此在不背离权利要求及等同范围所限定的一般概念下，本发明并不限于特定的细节。

Claims (7)

1.一种金属切削用盖板，其特征在于，包括树脂片层和设于所述树脂片层两面的金属层；
其中，所述树脂片层包括以下重量份的材料：
2.如权利要求1所述的金属切削用盖板，其特征在于，所述润滑剂包括40～50wt％十二烷基十四醇和50～60wt％蒙旦蜡。
3.如权利要求1所述的金属切削用盖板，其特征在于，所述增强剂包括65～70wt％氮化钛和30～35wt％碳化铬。
4.如权利要求1所述的金属切削用盖板，其特征在于，所述树脂片层还包括3～5重量份玻璃纤维。
5.如权利要求1所述的金属切削用盖板，其特征在于，所述金属层上还设有抗菌层。
6.如权利要求5所述的金属切削用盖板，其特征在于，所述抗菌层包括70～80wt％碳纤维、10～15wt％竹纤维、5～8wt％四氟乙烯-六氟丙烯共聚物和3～5wt％Cr3AlC。
7.如权利要求1所述的金属切削用盖板，其特征在于，所述金属层为铝箔层，所述铝箔层的厚度为80～120μm。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163598A (en) * 1981-03-24 1982-10-07 Tomoegawa Paper Co Ltd Heat-sensitive mimeographic sheet
WO1989007336A1 (en) * 1988-02-05 1989-08-10 Raychem Limited Laminar polymeric sheet
JPH03234618A (ja) * 1990-02-13 1991-10-18 Asahi Chem Ind Co Ltd 充填包装用複合シート
CN105073355A (zh) * 2013-03-27 2015-11-18 三菱瓦斯化学株式会社 纤维强化复合材料或金属的切削加工用盖片及其切削加工方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163598A (en) * 1981-03-24 1982-10-07 Tomoegawa Paper Co Ltd Heat-sensitive mimeographic sheet
WO1989007336A1 (en) * 1988-02-05 1989-08-10 Raychem Limited Laminar polymeric sheet
JPH03234618A (ja) * 1990-02-13 1991-10-18 Asahi Chem Ind Co Ltd 充填包装用複合シート
CN105073355A (zh) * 2013-03-27 2015-11-18 三菱瓦斯化学株式会社 纤维强化复合材料或金属的切削加工用盖片及其切削加工方法

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