【摘要】：本文將刀具表面涂層技術(shù)與表面織構(gòu)技術(shù)相結(jié)合,提出了微織構(gòu)AlCrN涂層刀具的設(shè)計(jì)思路。首先在YS8硬質(zhì)合金基體表面應(yīng)用真空陰極電弧離子鍍技術(shù)制備出AlCrN涂層,然后應(yīng)用光纖激光器在AlCrN涂層表面制備出微織構(gòu),系統(tǒng)研究了微織構(gòu)AlCrN涂層刀具的摩擦磨損性能以及切削性能等,并深入分析探討了該刀具的減摩作用機(jī)理。應(yīng)用真空陰極電弧離子鍍技術(shù)在YS8硬質(zhì)合金基體表面沉積AlCrN涂層。通過開展納秒激光在AlCrN涂層表面加工微織構(gòu)的工藝試驗(yàn),分析了激光加工參數(shù)對(duì)微織構(gòu)加工質(zhì)量的影響及作用規(guī)律,并優(yōu)化得到了微織構(gòu)最佳工藝參數(shù):脈沖功率14 W,激光掃描速度150 mm/s,激光掃描頻率40 kHz,掃描遍數(shù)1遍,由得到的最佳微織構(gòu)工藝參數(shù)在AlCrN涂層刀具表面制備出微織構(gòu),對(duì)應(yīng)的微織構(gòu)寬度約為25 μm,深度約為26 μm。制備出四種不同試樣,即:YS8硬質(zhì)合金試樣(A);微織構(gòu)YS8硬質(zhì)合金試樣(B);AlCrN涂層試樣(C);微織構(gòu)AlCrN涂層試樣(D)。通過球-盤接觸式摩擦磨損試驗(yàn)研究了微織構(gòu)AlCrN涂層的摩擦磨損特性。結(jié)果表明:干摩擦?xí)r,改變滑動(dòng)速度、施加載荷,摩擦系數(shù)趨于穩(wěn)定時(shí),摩擦系數(shù)由小到大排列順序都為D、C、B、A,且C、D即擁有AlCrN涂層的試樣都可以更快的達(dá)到穩(wěn)定狀態(tài)。試樣D的摩擦系數(shù)最小,相比于試樣A能夠有效降低10%-20%;添加固體潤滑劑MoS2后,摩擦系數(shù)趨于穩(wěn)定時(shí),摩擦系數(shù)由小到大排列順序都為D、B、C、A,試樣B的摩擦系數(shù)比試樣C小;試樣D相比于干摩擦?xí)r摩擦系數(shù)大幅度降低,表明微織構(gòu)AlCrN涂層與固體潤滑劑結(jié)合能夠有效提升AlCrN涂層表面的減摩特性。制備了兩種溝槽形貌的微織構(gòu)AlCrN涂層刀具:直線型微織構(gòu)AlCrN涂層刀具(MCT)和圓弧型微織構(gòu)AlCrN涂層刀具(RCT)。通過與普通AlCrN涂層刀具(TT)對(duì)比進(jìn)行切削試驗(yàn)研究了微織構(gòu)AlCrN涂層刀具車削AISI660奧氏體沉淀硬化不銹鋼的切削性能。切削試驗(yàn)結(jié)果表明,在相同的切削條件下,與TT刀具相比,MCT和RCT刀具能夠有效降低切削力和切削溫度。其中,MCT刀具降低切削力和切削溫度效果最明顯,其切削力比TT刀具降低10%-30%,切削溫度降低5%-15%。另外,MCT和RCT刀具前刀面和后刀面磨損程度都得到了明顯的改善,其中MCT刀具不銹鋼粘結(jié)現(xiàn)象最輕微。微織構(gòu)改善AlCrN涂層刀具切削性能的作用機(jī)理主要為:一是微織構(gòu)的存在減小了刀屑接觸長度,因此可以有效地減小摩擦力;二是微織構(gòu)可以儲(chǔ)存切削過程中產(chǎn)生的磨屑,從換緩解了磨屑在前刀面摩擦產(chǎn)生的磨粒磨損;三是微織構(gòu)在切削過程中充當(dāng)油室的作用,使儲(chǔ)存在在微織構(gòu)內(nèi)部的潤滑液不斷補(bǔ)充到刀屑接觸區(qū)域,從而起到潤滑、減小表面磨損的作用。
[Abstract]:Based on the combination of surface coating technology and surface texture technology, the design idea of micro-texture AlCrN coated tool is put forward in this paper. Firstly, AlCrN coatings were prepared on the surface of YS8 cemented carbide by vacuum cathode arc ion plating, and then microtextures were prepared on the surface of AlCrN coatings by fiber laser. The friction and wear properties and cutting properties of microtextured AlCrN coated tools are systematically studied, and the antifriction mechanism of the tool is analyzed. AlCrN coating was deposited on YS8 cemented carbide substrate by vacuum cathode arc ion plating. The effect of laser processing parameters on the quality of AlCrN coating was analyzed through the experiment of nanosecond laser processing of microtexture on the surface of AlCrN coating. The optimum technological parameters of microtexture were obtained: pulse power 14 W, laser scanning speed 150 mm/s, laser scanning frequency 40 kHz, scanning times once. The microtexture was prepared on the surface of AlCrN coated tool by the obtained optimum microtexture process parameters. The corresponding microtexture width is about 25 渭 m and the depth is about 26 渭 m. Four kinds of different samples were prepared, that is, the (A); microtexture of the W / YS8 cemented carbide sample YS8 cemented carbide specimen (B) AlCrN coated sample (C); microtexture AlCrN coated sample (D). The friction and wear characteristics of microtextured AlCrN coating were investigated by ball disk contact friction and wear test. The results show that when the sliding speed is changed and the friction coefficient tends to be stable, the order of friction coefficient from small to large is DX BU A, and CfD, that is, samples with AlCrN coating, can reach stable state more quickly. The friction coefficient of sample D is the smallest, and the friction coefficient of sample B is smaller than that of sample C, and the friction coefficient of sample B is smaller than that of sample C. when the friction coefficient of sample D is stable, the friction coefficient of sample B is smaller than that of sample C. when the friction coefficient of sample D is stable, the friction coefficient of sample B is smaller than that of sample C. The friction coefficient of sample D was significantly lower than that of dry friction, which indicated that the combination of microtextured AlCrN coating and solid lubricant could effectively improve the antifriction properties of AlCrN coating surface. Two kinds of microtexture AlCrN coated tools with groove morphology, linear microtexture AlCrN coated tool (MCT) and circular arc microtexture AlCrN coated tool (RCT)., were prepared. The cutting properties of AISI660 austenitic precipitated hardened stainless steel turning with microtextured AlCrN coated tools were studied by comparing with (TT) of conventional AlCrN coated tools. The results of cutting experiments show that under the same cutting conditions, the cutting force and cutting temperature can be reduced effectively by TT and RCT cutters. The cutting force of MCT tool is 10 -30 lower than that of TT tool, and the cutting temperature is 5% -15% lower than that of TT tool. In addition, the wear degree of the front and back face of MCT and RCT tools were improved obviously, among which the stainless steel bonding of MCT tool was the least. The mechanism of microtexture to improve the cutting performance of AlCrN coated tool is as follows: first, the existence of microtexture can reduce the contact length of chip, so it can effectively reduce the friction force; second, the microtexture can store the chip produced in the cutting process. The wear of abrasive particles caused by the friction of chips on the front of the tool surface is alleviated by the change; third, the microtexture acts as an oil chamber in the cutting process, so that the lubricating fluid stored in the microtexture can be continuously replenished to the contact area of the chip, thus providing lubrication. Reduce the effect of surface wear.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG711;TG174.4

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李良福;國外涂層刀具的研究狀況[J];輕工機(jī)械;2001年02期

2 鄧建新,鈕平章,王景海,艾興;“軟”涂層刀具的發(fā)展與應(yīng)用[J];工具技術(shù);2005年03期

3 王梅;;涂層刀具的性能及應(yīng)用[J];大眾科技;2008年04期

4 李偉欣;石磊;牟國忠;;涂層刀具摩擦磨損研究[J];價(jià)值工程;2010年04期

5 雁心;對(duì)涂層刀具使用中出現(xiàn)問題的分析及其解決辦法[J];工具技術(shù);1980年06期

6 于靖華,王寶富;涂層刀具磨損形態(tài)分析[J];機(jī)械工程材料;1998年06期

7 周凱楊;;存在缺陷的涂層刀具3D有限元分析[J];中小企業(yè)管理與科技(下旬刊);2014年03期

8 宋昌才,馮愛新;多元多層復(fù)合涂層刀具磨損失效機(jī)理研究[J];江蘇理工大學(xué)學(xué)報(bào)(自然科學(xué)版);2000年05期

9 李良福;國外涂層刀具的研究狀況[J];機(jī)械設(shè)計(jì)與制造工程;2001年03期

10 劉愛麗,于靖華,王宙;涂層刀具切削參數(shù)計(jì)算機(jī)輔助優(yōu)化[J];組合機(jī)床與自動(dòng)化加工技術(shù);2001年06期

相關(guān)會(huì)議論文 前4條

1 梁航;董小虹;張中弦;王桂茂;區(qū)名結(jié);黃拿燦;;高性能涂層刀具的研發(fā)[A];2013年廣東省真空學(xué)會(huì)學(xué)術(shù)年會(huì)論文集[C];2013年

2 武亮;何衛(wèi)光;王偉;;采用涂層刀具 提高生產(chǎn)經(jīng)濟(jì)效益[A];第三屆十省區(qū)市機(jī)械工程學(xué)會(huì)科技論壇暨黑龍江省機(jī)械工程學(xué)會(huì)2007年年會(huì)論文（摘要）集[C];2007年

3 黃樹濤;賈春德;姜增輝;于駿一;;TiN涂層刀具的高速車銑切削性能及磨損機(jī)理研究[A];全國生產(chǎn)工程第九屆年會(huì)暨第四屆青年科技工作者學(xué)術(shù)會(huì)議論文集（二）[C];2004年

4 ;硬質(zhì)合金基體金剛石涂層刀具[A];廣東省材料研究學(xué)會(huì)部分單位會(huì)員成果匯編[C];2005年

相關(guān)重要報(bào)紙文章 前1條

1 上海交通大學(xué)微電子所教授 張志明;給刀具模具穿上鉆石外衣[N];科技日?qǐng)?bào);2001年

相關(guān)博士學(xué)位論文 前5條

1 李士鵬;WS_2-WS_2/Ti-TiSiN軟硬復(fù)合涂層刀具的制備及其性能研究[D];山東大學(xué);2015年

2 張靜婕;涂層刀具切削熱傳導(dǎo)和切削溫度的研究[D];山東大學(xué);2017年

3 劉建華;ZrN涂層刀具的設(shè)計(jì)開發(fā)及其切削性能研究[D];山東大學(xué);2007年

4 顏培;ZrTiN梯度涂層刀具的制備及性能研究[D];山東大學(xué);2012年

5 盧文壯;CVD金剛石涂層刀具的制備及其切削性能研究[D];南京航空航天大學(xué);2008年

相關(guān)碩士學(xué)位論文 前10條

1 楊俊;304、20Cr鋼的摩擦特性及涂層刀具干切削性能研究[D];西南大學(xué);2015年

2 楊會(huì)明;涂層刀具在機(jī)加工中的切削性能研究[D];東北石油大學(xué);2016年

3 張嘯塵;刃口鈍化對(duì)涂層刀具切削性能影響的研究[D];貴州大學(xué);2016年

4 劉森;Ti-Si-C涂層刀具制備及其切削性能評(píng)價(jià)[D];南京航空航天大學(xué);2016年

5 任文祥;CVD涂層刀具在漢白玉加工中的磨損研究[D];沈陽建筑大學(xué);2014年

6 姜超;微織構(gòu)AlCrN涂層刀具的制備與性能研究[D];山東大學(xué);2017年

7 楊麗娟;刀具涂層材料與涂層刀具的應(yīng)用[D];青島大學(xué);2009年

8 王剛;氮化鋁鈦涂層刀具研究[D];長春理工大學(xué);2007年

9 楊海東;金剛石、氮化碳涂層刀具干切削性能的研究[D];安徽農(nóng)業(yè)大學(xué);2004年

10 楊智能;涂層刀具結(jié)合界面的仿生設(shè)計(jì)[D];合肥工業(yè)大學(xué);2013年

，

本文編號(hào)：2227332