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机械加工对刀具高要求需要什么?

发布时间:2021-06-15 16:09:39 来源:http://www.jnskdj.com 作者:骏豪 浏览量:

机械加工对刀具高要求需高寿命低污染,随着科技的发展,对材料表面性能的要求越来越高。近几十年来各种气相沉积技术兴起,使得表面工程技术的研究和应用都取得了突飞猛进的发展。数控刀具刀片回收公司凭借雄厚的经济实力,良好的商业信誉迅速的赢得了众多客户的信赖。

Machining requires high tool life and low pollution. With the development of science and technology, the requirement of material surface properties is higher and higher. In recent decades, the research and application of surface engineering technology have made rapid progress with the rise of various vapor deposition technologies. CNC tool blade recycling company with strong economic strength, good business reputation, quickly won the trust of many customers.

回收各种新、废旧机械加工刀具这些技术不但实现了机械性能的要求,如耐磨、减摩和抗蚀,而且在电磁、光学、光电子学、热学、超导和生物学等与表层有关的功能材料领域大显身手。表面工程学不仅使低廉的金属材料在性能与效益方面发挥出更大的优势,而且已成为研制各种新型镀层和薄膜材料的重要手段,具有着巨大应用潜力。随着机械加工工业水平的提高,对刀具提出了新的要求。除了提高使用寿命外还要求减少切削时的污染,尽可能使用干切削。

These technologies not only meet the requirements of mechanical properties, such as wear resistance, friction reduction and corrosion resistance, but also play an important role in the field of surface related functional materials, such as electromagnetism, optics, optoelectronics, thermology, superconductivity and biology. Surface engineering not only makes low-cost metal materials play a greater advantage in performance and benefit, but also has become an important means to develop a variety of new coating and film materials, which has great application potential. With the development of machining industry, new requirements for cutting tools are put forward. In addition to improving the service life, it is also required to reduce the pollution during cutting and use dry cutting as far as possible.

机械加工对刀具高要求需要什么?(图1)

在不能完全取消切削液的时候,尽量做到其中只含防锈剂而无有机物,这样可以使循环回收的成本大为降低。切削刀具的多样性和使用时的工作状态特点决定了选择江苏刀具镀层的不同。

When the cutting fluid can not be completely eliminated, try to make it contain only antirust agent and no organic matter, which can greatly reduce the cost of recycling. The diversity of cutting tools and the characteristics of working state in use determine the different choice of tool coating in Jiangsu.

车削和钻孔不同,铣刀又应考虑其断续冲击的特点。早期发展的涂层以耐磨为主要着眼点,以提高硬度为主要指标。以氮化钛为代表的此类涂层具有较高的摩擦系数(0.4~0.6),加工时与工件之间不断摩擦将产生大量热能。“为避免刀具过热发生变形影响加工精度和延长其使用寿命,通常使用切削液。

Different from drilling, milling cutter should consider its intermittent impact. Wear resistance is the main focus of early developed coatings, and hardness improvement is the main index. This kind of coating, represented by titanium nitride, has a high friction coefficient (0.4 ~ 0.6), and a lot of heat energy will be generated by constant friction between the coating and the workpiece during processing“ In order to avoid tool overheating deformation, affect machining accuracy and extend its service life, cutting fluid is usually used.

要解决减少或免除切削液带来的问题,刀具镀层不仅应使刀具具有长寿命,且应有自润滑的功能。类金刚石涂层(DLC)的出现在对某些材料(Al、Ti及其复合材料)的机械加工方面显示出优势,但经过多年的研究表明类金刚石涂层的内应力高、热稳定性差和与黑色金属间的触媒效应使SP3结构向SP2转变等三种缺点,决定了它目前只能应用于加工有色金属,因而限制了它在机加工方面的进一步应用。

In order to solve the problem of reducing or eliminating the cutting fluid, the tool coating should not only make the tool have a long life, but also have the function of self lubrication. The appearance of diamond-like carbon (DLC) coating has shown its advantages in machining some materials (al, Ti and their composites). However, after many years of research, it has been shown that DLC coating has three disadvantages, such as high internal stress, poor thermal stability and the catalyst effect between DLC and ferrous metal, which makes SP3 structure transform to SP2 structure. So it can only be used to process non-ferrous metals, Therefore, its further application in machining is limited.

但是近年来的研究表明,以SP2结构为主的类金刚石涂层(也称为类石墨涂层)硬度也可达到20~40GPa,却不存在与黑色金属起触媒效应的问题,其摩擦系数很低又有很好的抗湿性,切削时可以用冷却剂也可用于干切削,其寿命比非镀层刀有成倍的提高,加工钢铁材料不存在问题,因而引起了涂层公司、刀具厂家大的兴趣。数控刀具刀片回收公司认为假以时日,这种新型的类金刚石涂层会在切削领域得到广泛的应用。

However, recent studies have shown that the hardness of diamond-like carbon coating (also known as graphite like coating) with SP2 structure can also reach 20-40gpa, but there is no problem of catalyst effect with ferrous metal. Its friction coefficient is very low, and it has good moisture resistance. It can be used as coolant or dry cutting when cutting, and its service life is twice as long as that of uncoated tool, There is no problem in processing steel materials, which has aroused great interest of coating companies and tool manufacturers. CNC tool blade recycling company believes that in time, this new type of diamond-like carbon coating will be widely used in the cutting field.