Which Chinese Lathe Tool Series Blade Agent Has The Most Complete Product Range

Kunshan Meiyaxing Hardware Machinery Co., Ltd. is a direct branch of Hong Kong Meiya International Trading Company in China. It has its own tool brand: MANF, engaged in CNC tool sales and operation services. It provides tungsten steel milling cutters, milling blades, turning blades, grooving and cutting blades, drilling and boring blades, multi-functional blades, threading blades and other indexable blades and their matching tool holders and cutter discs. It has also reached long-term strategic cooperation with many well-known production factories. The two sides jointly develop, design, and produce teams, advanced equipment, and continuously innovate and improve technical strength. They are committed to mutual cooperation, guided by technical services, and form a form of mutual reliance in the industrial chain to solve problems for processing and manufacturing companies. Various processing problems.
In the vast field of mechanical processing, the turning tool blade is undoubtedly one of the most critical basic components and can be regarded as a powerful assistant for metal processing. It acts directly on the workpiece, shouldering the heavy task of removing excess material and shaping precise shape and size. Its performance plays a decisive role in processing accuracy, efficiency and workpiece surface quality. It is no exaggeration to say that every slight improvement in the turning tool blade may trigger major changes in the entire mechanical processing industry and inject a continuous and powerful driving force into the development of the manufacturing industry. There are many varieties classified by blade material:
(I) High-speed steel
High-speed steel, also known as high-speed steel, is a tool steel containing various alloy elements such as tungsten, molybdenum, chromium, and vanadium. After heat treatment, the hardness can reach HRC63 - 66. It has good toughness and strength, excellent processability, and can easily obtain a sharp edge after sharpening. It can withstand large impact forces, which makes it very useful in the field of complex tool manufacturing, such as commonly used in the manufacture of various complex forming turning tools, threading tools, drills, reamers, etc. However, high-speed steel has poor heat resistance and can only withstand a maximum temperature of 600°C. Once this limit is exceeded, the hardness will drop sharply and cannot meet the needs of high-speed cutting. Therefore, its application is subject to certain restrictions in scenarios that require high-speed and efficient processing. For example, when ordinary lathes perform fine turning on some small, high-precision parts that are not sensitive to processing speed, high-speed steel turning tools can rely on their sharp edges and good toughness to ensure processing accuracy and surface quality; but in large-scale, high-efficiency processing on automated production lines or high-speed CNC lathes, high-speed steel tools are difficult to perform.
(II) Cemented Carbide
Cemented Carbide is a hard compound of refractory metals (such as tungsten carbide WC, titanium carbide TiC, tantalum carbide TaC, niobium carbide NbC It is made of tungsten carbide (such as cobalt, molybdenum, nickel, etc.) and bonding metal (mainly cobalt Co, some containing molybdenum Mo, nickel Ni, etc.) through powder metallurgy. Its hardness is as high as 89-93HRA (equivalent to 74-82HRC), with excellent wear resistance and heat resistance temperature of 800-1000℃. It can adapt to high-speed cutting and greatly improve processing efficiency. It is widely used in modern mechanical processing and is the preferred material for many tools.
According to the main chemical composition and performance characteristics, cemented carbide can be divided into the following categories:
K category (tungsten cobalt category, equivalent to YG category): The main components are tungsten carbide WC and cobalt Co, with good toughness, but relatively weak hardness and wear resistance, suitable for processing brittle materials such as cast iron and bronze. Common grades include YG8, YG6, YG3, etc., where the number represents the percentage of Co content, such as YG6, which contains 6% Co. The higher the Co content, the better the toughness. Generally speaking, YG8 is often used for rough machining, YG6 is suitable for semi-finishing, and YG3 is used for finishing, which can meet different machining accuracy requirements.
P type (tungsten cobalt titanium type, equivalent to YT type): composed of tungsten carbide WC, titanium carbide TiC and cobalt Co, with outstanding heat resistance and wear resistance, but poor impact toughness, mainly used for processing tough materials such as steel. Common grades such as YT5, YT15, YT30, etc. The numbers represent the percentage of titanium carbide TiC content. The higher the TiC content, the better the wear resistance, but the lower the toughness. YT5 is often used for rough machining, YT15 for semi-finishing, and YT30 for finishing, which can effectively cope with different stages of steel processing.
M type (tungsten-cobalt-titanium-tantalum-niobium type, equivalent to YW type): A small amount of rare metal carbide (TaC or NbC) is added to the tungsten-cobalt-titanium cemented carbide, which has the advantages of the first two types of cemented carbide. It can process both brittle and tough materials, and can also be used for difficult-to-process materials such as high-temperature alloys, heat-resistant alloys and alloy cast iron. Commonly used grades are YW1 and YW2, which have a wider range of applications, strong versatility, and outstanding performance in complex processing tasks.
(III) Ceramic tools
Ceramic tools are based on ceramic materials and have a series of excellent characteristics. Its room temperature hardness is as high as 91-95HRC, and its heat resistance is excellent. It can still maintain a hardness of 80HRC at a high temperature of 1200℃, and its bending strength and toughness are rarely reduced under high temperature conditions; it has extremely high chemical stability, low affinity with metals, and excellent high-temperature oxidation resistance. Even at melting temperature, it does not interact with steel, effectively reducing the adhesion, diffusion, and oxidation wear of the tool; it has a low friction coefficient, and the chips are not easy to stick to the tool, and it is not easy to produce built-up edge, which can significantly improve the processing surface quality.
However, ceramic tools also have obvious limitations. It is brittle, low in strength and toughness, and its bending strength is only 1/2-1/5 of that of cemented carbide. When using it, the geometric parameters and cutting amount must be carefully selected to avoid impact loads, otherwise it is very easy to break the edge and break; the thermal conductivity is low, only 1/2-1/5 of that of cemented carbide, but the thermal expansion coefficient is 10-30% higher than that of cemented carbide, and the thermal shock resistance is poor. Temperature changes during processing can easily cause cracks. Therefore, ceramic tools are often used for finishing of hardened parts with a hardness between HRC45 and 55, and they play a unique advantage in the field of precision machining to ensure high-precision and high-quality machining needs.
(IV) Superhard tool materials
Superhard tool materials mainly include cubic boron nitride (CBN) and diamond, which are unique in the field of mechanical machining with their ultra-high hardness.
Cubic boron nitride (CBN): The hardness is second only to diamond, and the microhardness can reach 8000-9000HV. It has good thermal stability and heat resistance of 1300-1500℃, which is far higher than diamond (700-800℃). It has extremely strong chemical stability to ferrous metals and is widely used in the cutting of cast iron and hardened steel products. Due to the small particle size of single crystal CBN and the existence of "cleavage planes" that are easy to split, actual cutting tools mostly use polycrystalline cubic boron nitride (PCBN). PCBN tools can be further divided into integral PCBN inserts and PCBN composite inserts. Integral PCBN inserts are made of sintered PCBN and have many cutting edges, which are suitable for large-volume and high-speed cutting. PCBN composite inserts are welded PCBN on a cemented carbide substrate, which combines toughness, hardness and wear resistance, and are suitable for different working conditions. In the post-quenching processing of automobile engine cylinder blocks, crankshafts and other parts, PCBN tools can complete the task efficiently and accurately, effectively improving production efficiency and product quality.
Diamond tools: Diamond is the hardest material known in nature, with a microhardness of 10,000 HV. It has extremely high hardness and wear resistance, and its wear resistance is 60-120 times that of cemented carbide, and its tool life is 10-100 times or even higher than that of cemented carbide tools. It has obvious anisotropy, and the performance of different crystal planes and directions varies greatly. The friction coefficient with non-ferrous metals is extremely low, about half of that of cemented carbide tools, usually between 0.1-0.3, with small deformation and cutting force during processing; it has excellent thermal conductivity, 1.5-9 times that of cemented carbide, and the cutting heat is easy to dissipate, and the temperature of the cutting part of the tool is low; the cutting edge is extremely sharp, and the blunt single crystal of the blade is generally 0.1-0.5μm, while the natural diamond tool can be as high as 0.005-0.008μm, which can achieve ultra-thin cutting and ultra-precision processing; the thermal expansion coefficient is low, only a fraction of that of cemented carbide, about 1.5% of that of high-speed steel 1/10, the dimensional accuracy during processing is extremely stable.
However, diamond tools also have shortcomings. The thermal stability is relatively poor. The hardness decreases when the cutting temperature exceeds 700℃. It is not suitable for cutting ferrous metals because diamonds easily react with iron atoms at high temperatures, and carbon atoms are converted into graphite structures, resulting in tool damage. Therefore, diamond tools are mainly used for high-speed processing of non-ferrous metals and non-metallic materials, such as various wear-resistant non-ferrous metals (silicon aluminum alloys, copper and copper alloys, cemented carbide, etc.), wear-resistant non-metals (ceramic materials, graphite materials, plastic rubber, fiberglass, etc.), and play an irreplaceable role in precision manufacturing fields such as electronics, optics, and aerospace.
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