本文選題：PCBN復(fù)合片 + 合成�。� 參考：《工具技術(shù)》2017年11期

【摘要】：本文以cBN為原料,以TiN和Al為黏結(jié)劑,在1450℃左右的高溫和5.5GPa的高壓下,在鉸鏈?zhǔn)搅骓攭簷C內(nèi)合成了四種不同cBN體積百分含量(vol%)的PCBN復(fù)合片。對合成的四種PCBN復(fù)合片進行了顯微結(jié)構(gòu)、相結(jié)構(gòu)、硬度、體電阻率及切削性能等性能檢測。結(jié)果顯示:四種PCBN復(fù)合片的顯微結(jié)構(gòu)有明顯的網(wǎng)格結(jié)構(gòu),網(wǎng)線處為黏結(jié)劑以及反應(yīng)生成的產(chǎn)物,網(wǎng)孔處為BN相;cBN與黏結(jié)劑TiN、Al在燒結(jié)過程中發(fā)生反應(yīng),反應(yīng)后Al相消失,生成AlN和TiB_2新物相,而PCBN50和PCBN60還有Al_3Ti相生成;PCBN復(fù)合片的硬度、電阻率隨cBN含量的增加而增加,當(dāng)cBN含量低于70vol%時,PCBN復(fù)合片的電阻率變化趨勢較慢;隨著cBN含量下降,刀具的切削壽命延長;當(dāng)cBN含量小于70vol%時,濕式切削時的刀具壽命高于干式切削時,當(dāng)cBN含量高于70vol%時,刀具干切時比濕切時使用壽命更長。
[Abstract]:In this paper, with cBN as raw material and TiN and Al as bonding agents, four kinds of PCBN composites with different cBN volume content (vol%) were synthesized in a hinged six face press under high temperature of about 1450 C and high pressure of 5.5GPa. The microstructure, phase structure, hardness, body resistivity and cutting properties of the four synthesized PCBN composite sheets were examined. The results show that the microstructure of the four PCBN composites has a distinct grid structure, the wire is the bonding agent and the product of the reaction, the mesh is BN phase, cBN and TiN, Al in the sintering process, the Al phase disappears and the AlN and TiB_2 new phase is formed, and PCBN50 and PCBN60 and Al_3Ti are generated; PCBN composite films are produced. The hardness and resistivity are increased with the increase of cBN content. When the content of cBN is lower than 70vol%, the resistivity change trend of PCBN composite is slower. With the decrease of cBN content, the cutting life of the tool is prolonged. When the content of cBN is less than 70vol%, the tool life of the cutting tool is higher than that of the dry cutting. When the cBN content is higher than 70vol%, the tool dry cutting is more wet than the wet. The service life is longer.
【作者單位】： 周口師范學(xué)院;開封貝斯科超硬材料有限公司;河南黃河旋風(fēng)股份有限公司;
【基金】：國家自然科學(xué)基金(11405280) 河南省科技廳科技發(fā)展計劃項目(162102310592) 周口師范學(xué)院校本項目(zknu B3201609)
【分類號】：TG711

【相似文獻】

相關(guān)期刊論文 前10條

1 邵芳;;Diffusion and Oxidation Wear of PCBN Tool based on Thermodynamics[J];Journal of Wuhan University of Technology(Materials Science Edition);2010年02期

2 ;CUTTING TEMPERATURE OF TEMPERING BEARING STEEL GCr15 CUT BY PCBN CUTTER[J];Chinese Journal of Mechanical Engineering(English Edition);1999年04期

3 ;Experimental Study on Hard Turning Hardened GCr15 Steel with PCBN Tool[J];廈門大學(xué)學(xué)報(自然科學(xué)版);2002年S1期

4 ;PCBN——面向21世紀(jì)的性能目標(biāo)(上)[J];現(xiàn)代制造工程;2002年04期

5 朱從容,王魄;整體PCBN刀片特性及其銑削應(yīng)用[J];機械制造;2002年02期

6 王宇;胡景姝;盆洪民;嚴(yán)復(fù)鋼;李玉甫;劉獻禮;;PCBN刀具技術(shù)最新進展[J];工具技術(shù);2006年01期

7 李海波;張弘_";董海;李Z，

本文編號：2068100