CN107382325A - 一种高端刀具用聚晶立方氮化硼复合片及其生产方法 - Google Patents

一种高端刀具用聚晶立方氮化硼复合片及其生产方法 Download PDF

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CN107382325A
CN107382325A CN201710436405.3A CN201710436405A CN107382325A CN 107382325 A CN107382325 A CN 107382325A CN 201710436405 A CN201710436405 A CN 201710436405A CN 107382325 A CN107382325 A CN 107382325A
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申建中
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Abstract

本发明属于超硬材料技术领域,具体涉及一种高端刀具用聚晶立方氮化硼复合片及其生产方法,方法包括如下步骤:将85%‑96%的立方氮化硼颗粒和2%‑5%的钛化碳氮混合15‑25分钟后再加入1%‑5%的尿素混合15‑25分钟,再加入1%‑5%的碳化钒混合6‑10小时,精确称重后组装压制,在800‑1000℃和高真空10‑4Pa的条件下退火3‑5小时,在95‑100MPa和1400‑1600℃的条件下,在缸径750的六面顶液压机内,合成高端刀具用聚晶立方氮化硼复合片,合成时间30‑50分钟。本发明扩大了合成温度范围、稳定了合成晶体结合强度,提高了立方氮化硼和粘接剂之间的粘接一致性。

Description

一种高端刀具用聚晶立方氮化硼复合片及其生产方法
技术领域
本发明属于超硬材料技术领域,具体涉及一种高端刀具用聚晶立方氮化硼复合片及其生产方法。
背景技术
聚晶立方氮化硼复合片刀具可加工硬度在HRC60以上的淬火钢、模具钢、工具钢、合金钢、灰口铁、白口铁等硬质合金、陶瓷等传统刀具难加工的材料,而且在断续切削,粗加工方面具其独特的特点和应用案例。适用于普通机床、专用机床、自动线以及数控机床,广泛应用于军工、汽车、冶金轧辊、轴承、模具等行业的切削加工。其使用寿命是硬质合金刀具的5~25倍,高耐磨性大大减少了换刀和磨刀的次数,也可不用冷却液而进行干式高速切削,适应日益提高的国家环保要求和“低碳经济”要求。
现国内生产聚晶立方氮化硼刀具厂家基本依靠进口西方发达国家的聚晶立方氮化硼复合片材料,价格昂贵。现有的生产工艺基本是;聚晶立方氮化硼层是由下述重量份原料制备的:70~85份的立方氮化硼微粉、10~15份的金属结合剂、5~10份的陶瓷添加剂。其生产方法是按照下述步骤进行的:A、混合均匀;B、将混合料和硬质合金基体装入有盐管屏蔽层隔离的钼杯中,加热、合成。
现有工艺由于聚晶立方氮化硼的合成温度范围很窄,合成晶体结合强度不稳定,立方氮化硼和粘接剂之间的粘接一致性差等问题。这样对于硬度高和不规则的工件,由于PCBN刀片较脆、怕冲击。从工件端面切入、切出,尤其在表面有夹渣、砂眼、凹凸不平的时候,最易发生冲击,使刃口破裂,造成耐用度降低。故,现有PCBN刀具不适于加工较软的黑色金属材料。
故,为了解决现有技术中存在的问题,实有必要进行研究,以提供一种更适于加工高端的高端刀具用聚晶立方氮化硼复合片及其生产方法。
发明内容
本发明要解决的技术问题是提供一种高端刀具用聚晶立方氮化硼复合片及其生产方法,扩大了合成温度范围、稳定了合成晶体结合强度,提高了立方氮化硼和粘接剂之间的粘接一致性。
为解决上述技术问题,本发明采用如下的技术方案:
本发明的一种高端刀具用聚晶立方氮化硼复合片,由下述原料制备而成:85%-96%的立方氮化硼颗粒、2%-5%的钛化碳氮、1%-5%的尿素和1%-5%的碳化钒。
优选地,立方氮化硼颗粒的平均粒径为1-2微米。
优选地,钛化碳氮的平均粒径为0.5-1微米。
优选地,碳化钒的平均粒径为2-4微米。
本发明的一种高端刀具用聚晶立方氮化硼复合片的生产方法,包括如下步骤:将85%-96%的立方氮化硼颗粒和2%-5%的钛化碳氮混合15-25分钟后再加入1%-5%的尿素混合15-25分钟,再加入1%-5%的碳化钒混合6-10小时,精确称重后组装压制,在800-1000℃和高真空10-4Pa的条件下退火3-5小时,在95-100MPa和1400-1600℃的条件下,在缸径750的六面顶液压机内,合成高端刀具用聚晶立方氮化硼复合片,合成时间30-50分钟。
采用本发明具有如下的有益效果:本发明扩大了合成温度范围、稳定了合成晶体结合强度,提高了立方氮化硼和粘接剂之间的粘接一致性。
具体实施方式
下面对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
本发明的一种高端刀具用聚晶立方氮化硼复合片的生产方法,包括如下步骤:将85%的立方氮化硼颗粒和5%的钛化碳氮混合15分钟后再加入5%的尿素混合25分钟,再加入5%的碳化钒混合6小时,精确称重后组装压制,在1000℃和高真空10-4Pa的条件下退火3.4小时,在100MPa和1600℃的条件下,在缸径750的六面顶液压机内,合成高端刀具用聚晶立方氮化硼复合片,合成时间50分钟。
其中,立方氮化硼颗粒的平均粒径为1微米;钛化碳氮的平均粒径为1微米;碳化钒的平均粒径为2微米。
上述生产方法,扩大了合成温度范围、稳定了合成晶体结合强度,提高了立方氮化硼和粘接剂之间的粘接一致性。
实施例2
本发明的一种高端刀具用聚晶立方氮化硼复合片的生产方法,包括如下步骤:将96%的立方氮化硼颗粒和2%的钛化碳氮混合17分钟后再加入1%的尿素混合15分钟,再加入1%的碳化钒混合7小时,精确称重后组装压制,在800℃和高真空10-4Pa的条件下退火3小时,在96MPa和1450℃的条件下,在缸径750的六面顶液压机内,合成高端刀具用聚晶立方氮化硼复合片,合成时间46分钟。
其中,立方氮化硼颗粒的平均粒径为1.2微米;钛化碳氮的平均粒径为0.9微米;碳化钒的平均粒径为2.5微米。
上述生产方法,扩大了合成温度范围、稳定了合成晶体结合强度,提高了立方氮化硼和粘接剂之间的粘接一致性。
实施例3
本发明的一种高端刀具用聚晶立方氮化硼复合片的生产方法,包括如下步骤:将91%的立方氮化硼颗粒和4%的钛化碳氮混合19分钟后再加入3%的尿素混合17分钟,再加入2%的碳化钒混合8小时,精确称重后组装压制,在840℃和高真空10-4Pa的条件下退火3.8小时,在95MPa和1540℃的条件下,在缸径750的六面顶液压机内,合成高端刀具用聚晶立方氮化硼复合片,合成时间42分钟。
其中,立方氮化硼颗粒的平均粒径为1.4微米;钛化碳氮的平均粒径为0.8微米;碳化钒的平均粒径为3微米。
上述生产方法,扩大了合成温度范围、稳定了合成晶体结合强度,提高了立方氮化硼和粘接剂之间的粘接一致性。
实施例4
本发明的一种高端刀具用聚晶立方氮化硼复合片的生产方法,包括如下步骤:将4999%的立方氮化硼颗粒和2%的钛化碳氮混合21分钟后再加入1%的尿素混合21分钟,再加3%的碳化钒混合9小时,精确称重后组装压制,在880℃和高真空10-4Pa的条件下退火4.2小时,在97MPa和1400℃的条件下,在缸径750的六面顶液压机内,合成高端刀具用聚晶立方氮化硼复合片,合成时间38分钟。
其中,立方氮化硼颗粒的平均粒径为1.6微米;钛化碳氮的平均粒径为0.7 微米;碳化钒的平均粒径为3.5微米。
上述生产方法,扩大了合成温度范围、稳定了合成晶体结合强度,提高了立方氮化硼和粘接剂之间的粘接一致性。
实施例5
本发明的一种高端刀具用聚晶立方氮化硼复合片的生产方法,包括如下步骤:将88%的立方氮化硼颗粒和4%的钛化碳氮混合23分钟后再加入4%的尿素混合19分钟,再加入4%的碳化钒混合10小时,精确称重后组装压制,在920℃和高真空10-4Pa的条件下退火4.6小时,在98MPa和1540℃的条件下,在缸径750的六面顶液压机内,合成高端刀具用聚晶立方氮化硼复合片,合成时间34分钟。
其中,立方氮化硼颗粒的平均粒径为1.8微米;钛化碳氮的平均粒径为0.6微米;碳化钒的平均粒径为3.8微米。
上述生产方法,扩大了合成温度范围、稳定了合成晶体结合强度,提高了立方氮化硼和粘接剂之间的粘接一致性。
实施例6
本发明的一种高端刀具用聚晶立方氮化硼复合片的生产方法,包括如下步骤:将94%的立方氮化硼颗粒和3%的钛化碳氮混合25分钟后再加入2%的尿素混合23分钟,再加入1%的碳化钒混合8.5小时,精确称重后组装压制,在960℃和高真空10-4Pa的条件下退火5小时,在99MPa和1500℃的条件下,在缸径750的六面顶液压机内,合成高端刀具用聚晶立方氮化硼复合片,合成时间30分钟。
其中,立方氮化硼颗粒的平均粒径为2微米;钛化碳氮的平均粒径为0.5微米;碳化钒的平均粒径为4微米。
上述生产方法,扩大了合成温度范围、稳定了合成晶体结合强度,提高了立方氮化硼和粘接剂之间的粘接一致性。
应当理解,本文所述的示例性实施例是说明性的而非限制性的。尽管描述了本发明的一个或多个实施例,本领域普通技术人员应当理解,在不脱离通过所附权利要求所限定的本发明的精神和范围的情况下,可以做出各种形式和细节的改变。

Claims (5)

1.一种高端刀具用聚晶立方氮化硼复合片,其特征在于,由下述原料制备而成:85%-96%的立方氮化硼颗粒、2%-5%的钛化碳氮、1%-5%的尿素和1%-5%的碳化钒。
2.根据权利要求1所述的高端刀具用聚晶立方氮化硼复合片,其特征在于,所述立方氮化硼颗粒的平均粒径为1-2微米。
3.根据权利要求1所述的高端刀具用聚晶立方氮化硼复合片的生产方法,其特征在于,所述钛化碳氮的平均粒径为0.5-1微米。
4.根据权利要求1所述的高端刀具用聚晶立方氮化硼复合片的生产方法,其特征在于,所述碳化钒的平均粒径为2-4微米。
5.一种高端刀具用聚晶立方氮化硼复合片的生产方法,其特征在于,包括如下步骤:将85%-96%的立方氮化硼颗粒和2%-5%的钛化碳氮混合15-25分钟后再加入1%-5%的尿素混合15-25分钟,再加入1%-5%的碳化钒混合6-10小时,精确称重后组装压制,在800-1000℃和高真空10-4Pa的条件下退火3-5小时,在95-100MPa和1400-1600℃的条件下,在缸径750的六面顶液压机内,合成高端刀具用聚晶立方氮化硼复合片,合成时间30-50分钟。
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