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高档金刚石工具的研究开发及应用 总被引:1,自引:1,他引:0
随着我国石材加工业的高速发展,必须发展高档金刚石工具.高档金刚石砂轮和涂附磨具在玻璃、陶瓷、木材加工和汽车制造业的需求量日益增大,而在半导体单晶硅、多晶硅以及其他晶体的加工中,对其性能要求越来越高,市场的潜力巨大.文章简介石材加工用高档激光焊接圆锯片和薄壁钻头以及金刚石串珠绳锯的研制,特别介绍金刚石涂附磨具的研制和应用.此外在电子信息和光电子产业的晶体加工中,高档金刚石工具占据重要的地位,以往未受业界重视,制造难度较大,文章亦提出了见解. 相似文献
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新一代金刚石工具及其性能分析 总被引:1,自引:0,他引:1
新一代金刚石工具以金刚石颗粒有序排列为主要特征,其性能比金刚石颗粒随意分布的传统金刚石工具优越.ARIX工艺制造的金刚石有序排列的锯片消除了传统金刚石锯片使用中提高锯切速率而导致寿命降低的问题.钎焊单层金刚石磨具由于其中的金刚石颗粒以一定间距有序排列成一定形式而且金刚石出刃较高,与其它结合剂金刚石磨具相比,可达到较高的加工效率和表面光洁度. 相似文献
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金刚石工具的圆锯片、绳锯和框架锯条,是目前最常用的石材加工工具,它们因为加工方式和锯切机理的巨大差异而相互补充,在石材加工中发挥着重要作用.文章分析了这些工具锯切石材时的受力和磨损情况,比较了其加工性能上的特点.以当前最具发展潜力而业内相对缺乏研究的绳锯为分析重点,认为这一加工方式具有许多独特和复杂的地方,不能用我们熟知的其它锯切机理进行简单的类推,并提出了一些新的看法. 相似文献
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一种激光焊接金刚石锯片的刀头包含负责切削的工作层、与基体焊接的非工作层以及工作层与非工作层中间的过渡层组成,为实现此刀头在自动冷压条件下无过渡层的冷压生产,同时保证其能够达到所需强度要求,通过设计一种工作层与非工作层的连接处为凹凸结合结构的刀头,并与常规自动冷压及包含过渡层的手动冷压刀头进行对比。实验结果表明,相比较常规自动冷压,通过该方法能够有效提高工作层与非工作层的连接强度,但与包含过渡层的手动冷压相比仍具有一定差距,但已能够满足使用需求,同时该刀头能够实现自动冷压生产,并且不同尺寸设计具有进一步提升强度的可能性。 相似文献
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文章通过介绍金刚石绳锯岩石板材加工方式,详细概述了金刚石绳锯板材异形加工、花岗岩大板加工、奢石大板加工的设备、规格尺寸、加工特点、应用说明、加工不足及发展趋势,最后对金刚石绳锯在板材加工领域提出建议。 相似文献
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文章通过介绍金刚石绳锯在盐溶矿、纯钢切割的领域应用,概述了在盐溶矿、纯钢切割应用领域金刚石绳锯制备要求,配套设备情况以及应用情况,最后对金刚石绳锯在应用领域上提出建议. 相似文献
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《Diamond and Related Materials》2002,11(3-6):742-748
In the last few years, a wire sawing process has been developed for many applications in the field of natural stone and construction materials, especially for very thick materials or components that are difficult to access. Diamond wire cutting was limited to small carbon-steel shapes, such as pipelines for transporting gas or oil under the sea. In particular, the task of cutting pure steel components offers new fields of applications, e.g. treatment of nuclear power or off-shore-components. The application of the wire sawing process for these specific cutting operations requires the development of diamond tools adapted to the cutting process. In this paper, the basic principles of wire sawing are explained and the background of diamond wire cutting of steel components is discussed. The interaction between the tool and the workpiece is described in detail. Results are presented of a project on further developments of the diamond wire sawing technique, emphasising the applications for metal components. 相似文献
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《Diamond and Related Materials》2001,10(3-7):693-697
Next generation photolithography stepper tools will operate at 157 nm and require robust solid state photodetectors to ensure efficient operation and facilitate direct beam monitoring for photoresist exposure dosimetry. There is currently no commercial detector system able to fully meet all the demanding requirements of this application. Diamond, which is intrinsically visible blind and radiation hard, is an obvious candidate for consideration. In this paper we report the results of the first study to assess the viability of thin film polycrystalline diamond photodetectors for use in 157 nm F2–He based laser lithography tools. Co-planar inter-digitated gold photoconductor structures were fabricated on free standing thin film diamond and exposed to pulses from an industrial F2–He laser in the fluence range 0–1.4 mJ cm−2. The electrical and optical characteristics of the devices have been measured and are compared to the response of a standard vacuum photodiode. The suitability of the diamond devices for use at 157 nm is discussed. 相似文献
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A simulation tool for the preliminary design of a pressure relieving device for processes at near critical conditions is described. The selection of a pressure relieving device can be divided into two stages. The first stage is to determine the required emergency outflow as a function of time, which provides information to select a pressure relief valve or a rupture disk. The second stage is to simulate the process with the pressure relieving device selected at the first stage to find out the behaviour of the process as a function of time. A comparison between the proposed and the API 520 method is shown with the aid of an example. 相似文献
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通过几则实例说明用粘接补强方法修理机械设备结构薄弱部位,不仅可以缩短修理周期,降低维修费用,而且还能改善零部件结构受力情况,提高设备的使用寿命。 相似文献
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聚酯生产过程中的真空设备 总被引:1,自引:1,他引:0
介绍已有的聚酯装置中所使用的不同形式的真空泵及组合 ,并对其进行经济分析。指出乙二醇喷射泵和罗茨泵比其它具有更优越的效率和能耗 ,是未来聚酯工业乃至石油化工过程中真空设备的选择方向。 相似文献
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整体煤气化联合循环(IGCC)流程中粗煤气净化系统分为常温湿法净化和高温干法净化,着重介绍了净化系统工艺流程中的除尘、脱硫技术及其设备,以及各自的优缺点,并对目前IGCC电站的粗煤气净化工艺和设备选择提出了建议。 相似文献
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