Type of diamond tool
20 1月 2018 | 没有评论 | posted by admin | in Article
1, Natural Diamond NaturalDiamond (ND);
2, artificial polycrystalline diamond ArtificialPolvc crystalline Diamond (PCD);
3, artificial polycrystalline diamond compact PolycrystallineDiamondCompact (PDC); chemical vapor deposition coating diamond tools Chemical various diamond tools (4) VaporDepositionDiamondCoatedTools (CVD).
4, deposition thickness of up to 100μm non-substrate pure diamond thick film ThickDiamondFilm (CD);
5, directly on the tool substrate surface deposition thickness of less than 30μm diamond film coating CoatedThinDiamondFilm (CD)
High-performance coated tools have become the hallmark of modern tools
19 1月 2018 | 没有评论 | posted by admin | in Article
High-performance coated knives have become the symbol of modern knives. At present, the proportion of coated knives in knives in developed countries has exceeded 80% and has been on the rise. Knife coating technology has become one of the key factors in upgrading the manufacturing technology. Metal nitride hard coating with high hardness and wear resistance, can effectively reduce all types of mechanical wear, chemical corrosion and high temperature oxidation, making the coating tool life significantly improved.
AlCrN coating is one of the best nitride coatings. Compared with the CrN coating, the addition of Al to form a ternary Cr-Al-N coating is greatly improved in terms of wear resistance and high temperature oxidation. The AlCrN coating formed after addition of Al has high hardness and Good chip removal mechanism and other characteristics, so under high load conditions showed significantly superior friction and wear characteristics, coating load significantly increased, which greatly broadened the service range of Cr-based PVD hard coating; compared to AlTiN Coating, Cr has a higher melting point than Ti, Cr instead of Ti AlCrN coating temperature oxidation temperature can be significantly improved, the friction coefficient is smaller, more chip evacuation, anti-adhesion, better toughness, More suitable for intermittent cutting, although the hardness slightly lower, but the overall performance is more excellent, AlCrN coating has become the most representative of the current PVD nitride coating. For today’s manufacturing industries that promote high-speed cutting and hard cutting, it is necessary to develop new coatings that maintain high hardness, high wear resistance and high-temperature oxidation resistance under high-speed cutting conditions. AlCrN coating at 1000 ℃ hardness remains 27GPa, which is the current hardness of the nitride hardness optimum. Cr element is the main element to improve the hot corrosion resistance, Al element can promote the formation of stable Al2O3 film, so the AlCrN coating has both good corrosion resistance and high temperature oxidation resistance. Relative to other coatings, the AlCrN coating is widely used in cutting, bearings, gearboxes, bearings and other industries due to its high hardness, good abrasion resistance, high temperature oxidation resistance and excellent red hardness under the condition of 1100. However, Stamping, aluminum die-casting, high temperature alloy processing, wear parts and other fields.
【CBN cutting tool】 the most development potential of cutting tool material
18 1月 2018 | 没有评论 | posted by admin | in Article
CBN tool with high hardness and wear resistance, and diamond tools collectively referred to as super-hard tool, but also with the iron metal affinity, high thermal conductivity, cutting is not easy to produce BUE, to ensure a high surface quality.
After several decades of development of CBN tools, there are three kinds of tool structure, one is the overall polycrystalline CBN tool, one is a composite CBN tool, and the other is a mosaic CBN tool. Different structures, the processing of the area are also different.
The overall polycrystalline CBN tool, the whole body is cubic boron nitride material, mainly used for roughing process, the margin of machining allowance, but also to ensure good surface quality.
Welded CBN tool and inlaid CBN tool, because only the cutting edge is cubic boron nitride material, the base is cemented carbide, so mainly for finishing process, the advantage of high-speed cutting, to ensure that the workpiece surface roughness .
Compared with traditional carbide cutting tools, CBN cutting tools not only have much higher efficiency but also have a longer service life than carbide cutting tools. CBN cutting tools, Reduce processing technology, improve production efficiency.
As a kind of superhard cutting tool, CBN tooling has good prospects in the market. With the increasing number of hard-to-machine materials with high hardness, the application fields of CBN cutting tools are gradually widened. The future of CBN tools will achieve very good development.
