The CERATIZIT Group’s Hard Material Solutions division will host the eCarbide online seminar week from 15 to 19 March. Covering a wide range of topics from carbide basics to expert knowledge, the series aims to give participants the edge they need in order to prevail.
Cemented carbide stands unrivalled in the fields of tool manufacturing, metal forming and many other industrial sectors. In an upcoming online seminar series, the experts of the CERATIZIT Group’s Hard Material Solutions will share their extensive knowledge free of charge, giving participants the competitive edge that is needed to prevail in today’s markets. The seminars are specifically designed to provide participants with first-hand knowledge and insider perspectives on applications, latest industry trends and the advantages of cemented carbide as compared with other hard materials.
In addition to the wealth of market-critical information, Q&A sessions after each seminar will give participants the opportunity to explore the topics even further. This free online seminar series will take place from 15 to 19 March 2021 in a remote online setting that offers participants an environment both convenient and safe.
Additional information on the eCarbide series and the content of the individual seminars, along with the registration links, is available at https://www.ceratizit.com/int/en/company/trade-shows/online-seminars.html.
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Has the development of new tool materials already reached its peak and is experiencing stagnation? Find out more from Andrei Petrilin and Marcel Elkouby, ISCAR.
Fig 1: CBN grade IB20H insert for hard part turning.
Building a house begins with laying the foundation. The strength and the reliability of the whole house depends on how strong the foundation is. In cutting tool engineering, this foundation is a cutting material.
There are various types of cutting materials: cemented carbide, polycrystalline diamond, high speed steel, and ceramics, to name a few. Each type contains different grades. At various stages in metal cutting history, the introduction of each cutting material and its use has led to a significant change in the level of cutting speeds and, consequently, productivity. However, if the previous century, especially its second half, was marked by the rapid progress of tool materials, today we do not see any significant new solutions in this field. Does this mean that the development of new tool materials has already reached its peak and is experiencing stagnation?
Of course not. It is simply that the new developments are deep within the cutting material and are focused on its structure, and can be observed only with the help of scanning electron microscopy (SEM), X-ray diffraction (XRD), electron backscatter diffraction (EBCD), and other sophisticated methods. They cover a tremendously complicated world of coatings that is extremely diverse despite its very small thickness, measured only by microns.
Fig 2: Parting tool carrying IC1010 grade insert.
The most commonly available cutting material today is cemented carbide (primarily coated), also known as ‘hard metal’, ‘tungsten carbide’ or simply, carbide. In terms of performance, it represents a reasonable balance between efficiency, tool life and cost. A combination of cemented carbide, coating, and post-coating treatment produces a carbide grade. Only one of these components—the cemented carbide—is an essential element in the grade. The others are optional.
Cemented carbide is a composite material comprising hard carbide particles that are cemented together by binding metal (mainly cobalt). Most cemented carbides used for producing cutting tools integrate wear-resistant coatings. There are also various treatment processes that are applied to already coated cemented carbide (for example, the rake surface of an indexable insert). New developments in cemented carbide, as a tool material, are concentrated in three directions: carbide production technologies, advanced coating methods, and innovative post-coating techniques. Considerable success has been achieved in each of these directions; this is reflected in the wealth of new products introduced to the market by leading cutting tool manufacturers.
Cutting tool customers might analyze the grades using parameters such as productivity, tool life, and performance. Indeed, the question of how a new product was created to meet customer requirements fades into the background as applicability and efficiency form the main measure of progress from the customer’s point of view.
In upgrading carbide grades, ISCAR is very sensitive to a challenge faced by the metalworking industries. In this context, ISCAR’s tool material solutions—developed considering the trends of modern metalworking—can be quite indicative. Take, for example, difficult-to-cut materials such as titanium and heat-resistant steels and exotic superalloys. Recently, the share of their application in industry has increased significantly. Along with the aircraft industry, a traditional consumer of these materials, they may be increasingly found in power engineering, automotive, and oil and gas branches. The growing usage of the materials demands technological solutions, including machinery and cutting tools. The new tools require an appropriate foundation, made of advanced cutting tool materials, to achieve the desired cutting geometry. And for the construction of this foundation, ISCAR offers its new effective ‘bricks’—upgraded carbide grades.
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Sumitomo Electrical Carbide AC8000P have made available a series of three grades for steel turning to meet a range of application requirements. They feature an Absotech platinum Chemical Vapour Deposition coating for longer tool life and an overall cost reduction in steel cutting.
The AC8015P grade offers good wear resistance during high-speed, high-efficiency steel cutting.
Designed to be reliable during general purpose steel cutting, the AC8025P grade’s special surface treatment results in improved tool surface smoothness and increased adhesion and chipping resistance.
Finally, the AC8035P grade provides stability during interrupted steel cutting. Its surface treatment reduces residual tensile stress in the coating for increased fracture resistance.
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Walter has developed the DC170 and is offering the first two models in dimensions 16xDc and 20xDc. The drill offers more process reliability, stability, running smoothness and efficiency than carbide drills with traditional geometries.
The drills are internally cooled. As a result, the coolant flows unimpeded, while hazardous chip jams are at the same time avoided. The manufacturer also says that the solid carbide mass directly behind the cutting edge makes the drill sturdy.
Finally, drills straight from the factory are supplied with eight visible channels that can be used as a scale for regrinding. The drills can be reconditioned up to three times, until only two cooling channels are left remaining.
