In the process of aerospace manufacturing development, the upgrading of materials also shows a high-speed change. In the future aerospace manufacturing, the content of composite materials, titanium alloys, nickel alloys and superalloys will dominate in an aircraft. In particular, the rapid development of composite materials has replaced the trend of aluminum alloys as the first material in aircraft manufacturing applications.
Although the proportion of aluminum alloy is still relatively high, more composite materials have been used in the manufacture of military helicopters. At present, composite materials on commercial aircraft only account for 40% to 50% of the total weight of the aircraft, and some helicopters have already reached More than 90.
With the wide application of high-performance materials in aerospace manufacturing, the demand for CNC machine tools and tool-specific levels has been further enhanced. Kennametal Tools is one of the best tool manufacturers in the world, and its expertise in aerospace manufacturing is highly refined.
Falling Composite (CFRP) SPF Bit
Composite materials (CFRP) have many advantages: high strength, light weight, fatigue resistance, high temperature resistance, corrosion resistance, non-conductivity, etc., making them widely used in the defense industry, automobiles and medicine. Due to the above comprehensive advantages, the composite material will be used in a large number in the wing, fuselage, empennage, propulsion device and landing device. However, there are many types of composite materials, among which carbon fiber reinforced polymer matrix composites are most commonly used, and their processing properties are particularly demanding, and general tools cannot achieve high quality product processing. Therefore, a unique tool is needed to harness this material.
SPF drill bit
Through more than a year of research and development, Kennametal has developed a new type of SPF drill bit specifically for composite materials. The base material of the SPF drill bit is made of hard alloy and the surface is a multi-layer smooth CVD diamond coating. The special geometry of the drill tip makes the cutting edge of the drill bit very sharp, and the optimized chisel edge design makes the drill bit centering ability better. This design greatly reduces the cutting force during the machining process, improves the quality of the hole, and avoids the phenomenon of delamination and fiber failure. The smooth diamond coating is characterized by good wear resistance and low friction coefficient, which makes the SPF drill bit have good service life and chip removal performance. The new SPF drill has a service life of at least 2 times that of a PCD drill and reduces the cost of machining each hole by at least 50%.
Expert in processing titanium and nickel based alloys
In the aerospace industry, in addition to composite materials with good prospects and difficult to process, the other two families of materials are also comparable to that of titanium alloys and nickel-based alloys. Due to its low density, high specific strength, high yield ratio, high corrosion resistance and high temperature mechanical properties, titanium alloys are not only used on aircraft, but also in defense industries such as satellites, launch vehicles and spacecraft. Very wide. However, in mechanical properties, a big difference between them and composite materials is that the toughness is relatively high. Therefore, compared to composite materials, their processing characteristics also have their own special tools.
For materials such as nickel-based corrosion-resistant alloys (Hastelloy B\\HastelloyC), ordinary milling cutters are difficult to process or can be processed with low processing efficiency. For this, Kenner introduced Harvi II? A series of integral end mills, which are professional tools for machining stainless steel and titanium alloys and nickel-base alloys. Their excellent processing properties make them the first choice in processing.
In particular, Kenner's new Harvi II integral end mills are particularly outstanding, featuring a 5-blade, high helix angle of 38°, rounded corners, standard length, unique edge-to-edge asymmetrical design, and a core parabolic shape design. AlTiN (MT) coating is more suitable for high efficiency processing.
For the medium-term performance of high-temperature alloy parts used in aircraft engines and wings, the cutting performance of the tools is extremely outstanding. When many users perform trial cutting, the high cutting speed and large feed rate of the tools make the operators feel shocked. It has been difficult to solve problems with various tools before, and it is unthinkable that Kenner's milling cutters can cut at such high speeds and extremely fast feed speeds. To this end, Kenimetal's Harvi II? The series of integral end mills has become the tool of choice for aircraft manufacturing companies to machine difficult materials.
In addition to the above two special tools, there are also two types of tools that are specially designed for different aerospace materials. They are K-4300 blades and processed air for the processing of high-temperature alloys and powder metallurgy superalloys. Aerospace stainless steel with a solid carbide drill with three unequal ligaments. Both tools also have their own unique design structure.
Ceramic KY4300 insert, its special mesh crystal structure makes the blade have strong toughness, especially in the processing of high-temperature alloy and high-hardness casting materials. It has good processing performance in processing high-temperature alloy and powder superalloy at home and abroad. It has excellent processing performance and gives users a surprising processing effect. Its cutting speed is generally 120~220m/min. It is a rare blade material for processing high hardness high temperature alloy and casting materials.
The solid carbide drill with three unequal ligaments has the excellent processing performance to replace the reaming process. The roundness and cylindricity of the machined hole are more than 4 times higher than the original drill bit. The degree is almost zero, and the machining accuracy of the hole reaches the quality effect of the reaming. The drill bit achieves very high machining efficiency while guaranteeing extremely high hole tolerances, and the user can also grind the drill itself after the drill bit is worn. In addition, Kennametal's solid carbide drill does not require a pilot hole or a central hole. The improvement of the processing efficiency of the hole is of great significance.
The terracotta warriors have not moved the grain first
An excellent tool manufacturer is not only the quality of the products, but also the after-sales service and processing solutions. Because the material is now more difficult to process, the degree of speciality of the tool is higher, which is the best tool product. If it is not used properly, it will accelerate the performance and life of the tool. "The terracotta warriors have not moved, the grain and grass are first." The advanced tool processing program, without the excellent tool backing, the quality assurance and processing efficiency of various products are also on paper.
As the world's second largest tool supplier, Kennametal is not only studying the performance of the tool from the base material of the tool, but also starting from the geometric design of the tool, the machining plan of different tool types and the material processed by the special tool. The company offers tailor-made professional tools and high-quality solutions and one-stop service for the processing of various performance materials.
Although the proportion of aluminum alloy is still relatively high, more composite materials have been used in the manufacture of military helicopters. At present, composite materials on commercial aircraft only account for 40% to 50% of the total weight of the aircraft, and some helicopters have already reached More than 90.
With the wide application of high-performance materials in aerospace manufacturing, the demand for CNC machine tools and tool-specific levels has been further enhanced. Kennametal Tools is one of the best tool manufacturers in the world, and its expertise in aerospace manufacturing is highly refined.
Falling Composite (CFRP) SPF Bit
Composite materials (CFRP) have many advantages: high strength, light weight, fatigue resistance, high temperature resistance, corrosion resistance, non-conductivity, etc., making them widely used in the defense industry, automobiles and medicine. Due to the above comprehensive advantages, the composite material will be used in a large number in the wing, fuselage, empennage, propulsion device and landing device. However, there are many types of composite materials, among which carbon fiber reinforced polymer matrix composites are most commonly used, and their processing properties are particularly demanding, and general tools cannot achieve high quality product processing. Therefore, a unique tool is needed to harness this material.
SPF drill bit
Through more than a year of research and development, Kennametal has developed a new type of SPF drill bit specifically for composite materials. The base material of the SPF drill bit is made of hard alloy and the surface is a multi-layer smooth CVD diamond coating. The special geometry of the drill tip makes the cutting edge of the drill bit very sharp, and the optimized chisel edge design makes the drill bit centering ability better. This design greatly reduces the cutting force during the machining process, improves the quality of the hole, and avoids the phenomenon of delamination and fiber failure. The smooth diamond coating is characterized by good wear resistance and low friction coefficient, which makes the SPF drill bit have good service life and chip removal performance. The new SPF drill has a service life of at least 2 times that of a PCD drill and reduces the cost of machining each hole by at least 50%.
Expert in processing titanium and nickel based alloys
In the aerospace industry, in addition to composite materials with good prospects and difficult to process, the other two families of materials are also comparable to that of titanium alloys and nickel-based alloys. Due to its low density, high specific strength, high yield ratio, high corrosion resistance and high temperature mechanical properties, titanium alloys are not only used on aircraft, but also in defense industries such as satellites, launch vehicles and spacecraft. Very wide. However, in mechanical properties, a big difference between them and composite materials is that the toughness is relatively high. Therefore, compared to composite materials, their processing characteristics also have their own special tools.
For materials such as nickel-based corrosion-resistant alloys (Hastelloy B\\HastelloyC), ordinary milling cutters are difficult to process or can be processed with low processing efficiency. For this, Kenner introduced Harvi II? A series of integral end mills, which are professional tools for machining stainless steel and titanium alloys and nickel-base alloys. Their excellent processing properties make them the first choice in processing.
In particular, Kenner's new Harvi II integral end mills are particularly outstanding, featuring a 5-blade, high helix angle of 38°, rounded corners, standard length, unique edge-to-edge asymmetrical design, and a core parabolic shape design. AlTiN (MT) coating is more suitable for high efficiency processing.
For the medium-term performance of high-temperature alloy parts used in aircraft engines and wings, the cutting performance of the tools is extremely outstanding. When many users perform trial cutting, the high cutting speed and large feed rate of the tools make the operators feel shocked. It has been difficult to solve problems with various tools before, and it is unthinkable that Kenner's milling cutters can cut at such high speeds and extremely fast feed speeds. To this end, Kenimetal's Harvi II? The series of integral end mills has become the tool of choice for aircraft manufacturing companies to machine difficult materials.
In addition to the above two special tools, there are also two types of tools that are specially designed for different aerospace materials. They are K-4300 blades and processed air for the processing of high-temperature alloys and powder metallurgy superalloys. Aerospace stainless steel with a solid carbide drill with three unequal ligaments. Both tools also have their own unique design structure.
Ceramic KY4300 insert, its special mesh crystal structure makes the blade have strong toughness, especially in the processing of high-temperature alloy and high-hardness casting materials. It has good processing performance in processing high-temperature alloy and powder superalloy at home and abroad. It has excellent processing performance and gives users a surprising processing effect. Its cutting speed is generally 120~220m/min. It is a rare blade material for processing high hardness high temperature alloy and casting materials.
The solid carbide drill with three unequal ligaments has the excellent processing performance to replace the reaming process. The roundness and cylindricity of the machined hole are more than 4 times higher than the original drill bit. The degree is almost zero, and the machining accuracy of the hole reaches the quality effect of the reaming. The drill bit achieves very high machining efficiency while guaranteeing extremely high hole tolerances, and the user can also grind the drill itself after the drill bit is worn. In addition, Kennametal's solid carbide drill does not require a pilot hole or a central hole. The improvement of the processing efficiency of the hole is of great significance.
The terracotta warriors have not moved the grain first
An excellent tool manufacturer is not only the quality of the products, but also the after-sales service and processing solutions. Because the material is now more difficult to process, the degree of speciality of the tool is higher, which is the best tool product. If it is not used properly, it will accelerate the performance and life of the tool. "The terracotta warriors have not moved, the grain and grass are first." The advanced tool processing program, without the excellent tool backing, the quality assurance and processing efficiency of various products are also on paper.
As the world's second largest tool supplier, Kennametal is not only studying the performance of the tool from the base material of the tool, but also starting from the geometric design of the tool, the machining plan of different tool types and the material processed by the special tool. The company offers tailor-made professional tools and high-quality solutions and one-stop service for the processing of various performance materials.
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