News & Events

Application of hard alloy surface reinforced material

In high speed, high temperature, high pressure, overloading and corrosive medium conditions, such as parts material damage often since surface, such as abrasion, corrosion, high temperature oxidation, surface and local damage will make the whole component failure, eventually lead to stop running equipment. Because of the hard alloy material has high hardness, good wear resistance corrosion resistance, high oxidation temperature, etc, often using edm surface strengthening technology, make parts surface for hard alloy composition, organization and performance, improve the surface properties of component materials and repair the failure parts, significantly increase the hardness, wear resistance and corrosion resistance of parts and components, etc., so as to improve equipment reliability and prolong its service life, hard alloy surface strengthening material widely used in parts or die.

With examples to analyze, in view of the excavator pin is adhesive wear and fatigue wear easily happen, 42 crmo as pin material with high strength alloy structural steel, by the high frequency quenching, tempering, surface of edm surface strengthening, the surface form a white tungsten cobalt 0.01 ~ 0.03 mm deep kind of hard alloy strengthening layer, the hardness HRC can reach more than 74, can increase the service life of the pin 1 ~ 2 times.

The hard alloy surface strengthening material is also applied to the repair of the surface of the mold cavity surface and the minor wear of the parts. Using YG8 hard alloy as the electrode to offset the cutting edge of the cutting edge to strengthen the repair of the surface of the electric spark, the average hardness value of HRC70 at the end of the repair can withstand the fatigue stress of the cutting. For the tensile die of stainless steel, after the surface is strengthened by hard alloy, the frequency of stretching die is increased from 500 pieces/times to 700 pieces/times, and the life span is increased by 3~8 times.

Through all kinds of surface strengthening technology, zero does not see the surface material with hard alloy composition and organization structure, which has the properties of cemented carbide surface layer, can improve the surface hardness, good wear resistance, resistance to bite and scratch resistance; The fatigue strength and service life of the parts are improved. Improve the lubrication condition of parts, reduce friction coefficient and achieve the purpose of reducing friction; Improving the corrosion resistance of mechanical parts; Improve the resistance of materials to high temperature oxidation. , of course, is the best way to directly use cemented carbide parts wear resistance performance is more outstanding, such as IC encapsulation pressure head tungsten carbide alloy and so on, by the use of performance is more evident than other materials.

Hard alloy surface strengthening materials are widely used, and the technology of surface strengthening is more mature with the development of science and technology. The effect performance of the surface reinforcement technology for different types of products is based on actual use.

China made 25 projects, including new materials for 2025, and new materials

The economic information daily, reporter recently from the ministry, the national development and reform commission, ministry of finance, such as the authorities, according to our country will be according to the overall planning of "2025" made in China continue to special funds, support the development of Chinese manufacturing 2025 key projects. Recent miit has established manufacturing industry innovation ability construction, the industrial chain coordination ability to ascend, industrial generic service platform and application of new materials for the first time insurance, a total of 25 items of key tasks in four aspects, and is carried out in cooperation with related ministries and organization project selection.

Recently, the ministry issued the industrial transformation and upgrading of 2017 (2025) made in China funds (budgets) project guide notice (hereinafter referred to as the "notice"), has been clear about the next stage on chinese-made 2025 funding direction. First established the "notice" manufacturing industry innovation ability construction, the industrial chain coordination ability to ascend, industrial generic service platform and application of new materials for the first time insurance four key tasks, but also according to the current 2025 the overall progress made in China, established including Internet, new materials, intelligent home appliances and high-end consumer electronics, industrial control system information security protection ability, infant formula powder industry quality and safety traceability system of 25 key tasks. In addition, the notice provides detailed implementation objectives for each key task. "Intelligent household appliances and high-end consumer electronics, for example," the task including the intelligent refrigerator, frequency conversion air conditioning, intelligent electric rice cooker, intelligent toilet cover, service robot, automobile electronic products, and other specific implementation projects.

According to, according to relevant experts to give the support to key task 2025 made in China is very big, the individual project level of financial support is in 30 million yuan to 50 million yuan, part of the common technical projects or key project will get more than $one hundred million in funding. The relevant experts calculate that more than 100 subdivisions are involved in the notice, and the total amount of financial support will be expected to exceed the 10 billion yuan mark.

The economic information daily, also from guangdong, hunan, zhejiang, jiangsu and other ministry department learned that in addition to the central financial support, also according to their respective industry around the endowment and the economic transformation and upgrading of the target, for 2025 key projects given a certain amount of money made in China. Guangdong since last year, for example, the robot, rail transportation, biological medicine, integrated circuit, intelligent equipment for the key projects such as the different levels of financial support, core project accumulated investment more than 1 billion yuan. At present, in addition to a few areas such as Tibet, most of the provinces and cities in the country have introduced their own China 2025 fund support plan. According to incomplete statistics, during the 13th five-year plan period, the total amount of capital support for China's 2025 key projects will exceed 10 billion yuan.

In addition, the economic information daily, also, according to the ministry, the national development and reform commission, ministry of finance, the China banking regulatory commission and other ministries are actively coordinate with various types of financial institutions, including loans for chinese-made 2025 key projects, investment, securities, leasing, comprehensive financial services. At present, the ministry of industry and information technology has reached an agreement with CDB to select pilot demonstration projects and provide financial support through market operation with major projects and key projects. It is reported that during the 13th five-year plan period, CDB will provide no less than 300 billion yuan in financing for China's manufacturing 2025, and provide loans, investment, bonds, leasing and other financial services.

In the form of special funds, etc to support key technology and industrial projects in our country has formed a set of mature experience, this not only promoted the rapid breakthrough in key projects, has greatly promoted the rapid development of related areas and industries. Manufacturing powers strategic advisory committee, member of Chinese academy of engineering construction WuHeQuan of the economic information daily, said financial support in addition to being able to promote key projects related to the smooth implementation, for 2025, and the transformation and upgrading of economic structure in our country, made in China also has strong policy implications: on the one hand, has been clear about the industry's future development direction, can make the enterprise and the industry little detours. On the other hand, we have strengthened the confidence and determination of the entire society to upgrade China's manufacturing 2025 and economic restructuring.

A number of companies have also introduced to the economic reference newspaper that the project application has been applied under the notice. The head of an integrated circuit company also told the economic reference newspaper that some high-tech areas, such as integrated circuits, need to make breakthroughs and require substantial investment in the early stage of development. After the technological breakthrough, industrialization also needs a lot of capital. Financial support from the central and local governments, therefore, will help enterprises to solve the problem of money, to a large extent will effectively ensure the technical breakthrough, and can promote the rapid industrialization, on the whole, this will ensure the smooth operation of the made in China, 2025, and accelerate the transformation and upgrading of economic structure in our country.

The machining method of difficult machining materials

In the cutting process, the usual tool wear includes two forms: (1) the wear caused by mechanical action, such as broken edge or abrasive wear; (2) wear due to heat and chemical action, such as adhesion, diffusion, corrosion and other abrasions, as well as broken, thermal fatigue and thermal cracking caused by the softening and melting of cutting edges.

In the short time, the above tool wear is caused by cutting difficult materials. This is due to the fact that there are many factors in the processed materials that cause the tool wear. For example, most difficult materials have the characteristics of low thermal conductivity. The heat generated during cutting is difficult to spread, resulting in a high temperature of the blade tip and the influence of the cutting edge is very obvious. The result of this effect will reduce the bond strength of the binder in the tool material at high temperature, and the particles such as WC (tungsten carbide) are easy to be separated, thus speeding up tool wear. In addition, the composition of difficult-to-machine materials and some of the cutting tool materials in cutting under the condition of high temperature reaction, precipitation in composition, fall off, or produce other compounds, it will accelerate the formation collapse phenomenon of blade and tool wear. When cutting high hardness, high toughness is processed materials, the cutting edge is very high temperature, also will appear with cutting difficult materials similar tool wear. Such as high hardness steel cutting, compared with the general steel cutting, cutting force, cutting tool rigidity insufficient will cause the phenomenon such as collapse edge, the tool life is not stable, and can shorten the tool life, especially when processing to generate short chip workpiece materials, can produce crater wear near the cutting edge, often in a short period of time the tool breakage.

Definition of difficult-to-machine materials and concrete variety, vary with age and profession, for example, the aerospace industry commonly used super heat resistant alloy, titanium alloy and contains carbon fiber composite materials, etc., are in the field of difficult-to-machine materials. The engineering technicians of the aerospace industry have carried out the research and development of processing technology, and have studied cutting tools and processing methods suitable for the field. In recent years, the development momentum of multi-function and high functionalization of mechanical products is very strong, and the parts must be miniaturized and refined. In order to meet some requirements, the material must have high hardness, high toughness and high wear resistance, and these characteristics of materials, the processing difficulty is particularly big, therefore appeared the new refractory materials. The difficult processing materials are thus developed with the development of The Times and the different professional fields, and its unique processing technology has been developing continuously with the development of the research and development of the era and the specialized fields.

on the other hand, with the coming of information society, technical information hard-cutting materials cutting can also communicate with each other through the Internet, therefore, the future of difficult-to-machine materials cutting data and other information will be more full, also is bound to further improve the machining efficiency, based on the hard processing material cutting processing as the core, is introduced in recent years, the development trend of the technology.

The whole carbide blade - kenner metal company has developed a world-leading modular drilling product

The KenTIP FS modular drilling system USES a fully cemented carbide tool head to ensure that it has a better heat resistance and is more competitive than other competitive drilling products

Some good ideas can lead to good results, far better than expected. Kenner of technicians are engaged in metal, they will be the KSEM modular drill system advantage of reliable performance and versatility with a series of small drill KenTIP easy usability and the features of low feed force together. The result is that the high performance of the hole processing products - KenTIP FS, which is a modular drilling product of 6 mm - 26 mm and 1.5-12 x D, is easy to use and the drilling quality is good. In a variety of material applications, this product is competitive compared with the solid carbide drill.

Why is the name FS? 'FS comes from Full Solid,' says Alexander Schmitt, senior global product manager at kenner metal modular drilling. He added that it was more than that. FS not only looks like a solid carbide drill, but also very similar in performance. So you can think of it as a tool that combines the performance advantage of solid carbide drill with the cost advantage of indexable drilling. Just see the FS product, it seems to be with other renewable segment types of drilling products there is no difference, also equipped with abandon blade, inner cooling channel, as well as for efficient clearance of helical chip groove, but the similarities end there. The FS adopts a new design scheme, which sets the performance of many important products and therefore stands out in the modular drilling family.

First, observe a drain groove. Notice how smooth and smooth the chip grooves are? This is because the chip slot is highly polished after the final processing. Kenner metal company has discovered that this process can significantly improve the performance of chip removal and reduce the impact of cutting on the head. Unlike most modular drilling products using two cooling hole designs, the FS product has four cooling holes - two on the head and two on the chip slotted spot under the knife head. This cooling hole design can provide larger coolant flow, avoid scraps blockage, at the same time also to take away the heat of cutting parts quickly, which can prolong the service life of the cutting tool, improve the quality of machining. Multi-cooling hole design can adjust coolant flow according to application requirements, Schmitt explains. For example, in stainless steel and cast iron material processing, adhesion and post-blade wear is a big problem. The HPL and HPC drill tip type blades are designed through a penetrating cooling channel to provide better lubrication performance in this area to solve this problem. But in the steel material processing, it is better to concentrate the cooling fluid in the front face of the knife, so as to be more conducive to the heat removal from the contact part of the chip and the front edge. Therefore, we removed the cooling hole of the knife face of the HPG slot blade, thus extending the service life of the blade and improving the performance of the cutting chip. In addition, this can avoid the formation of debris tumor, ensure that the blade is stronger, so that better drilling performance can be found in the processing of steel materials.

The design of this product will not only adjust the number of cooling holes in the blade, but also to meet specific application requirements. HPG tank type provides a new type of high abrasion-resistant hard alloy material - KCP15A, which is specially designed for steel materials. Compared with similar drill bit products, the latest design of the drill point Angle and the design of the self-centering design can ensure better positioning accuracy and the hole perpendicularity, even in the high feed situation. The rounded part of the blade with slight chamfer protection design, can reduce the collapse edge, edge with enhanced design, same HPG trough type product and therefore suitable for hydraulic manifold applications of the common intersection Angle outlet hole processing, or stack plate in heat exchanger production processing.

If the world's only steel material machining applications, HPG trough type blade should be sufficient to deal with, but the aviation industry also need processing stainless steel and heat resistant alloy materials, automobile manufacturers of cast iron materials with a wide range of requirements. For the former, kenner metal companies provide HPL trough type products, this product is drilling design, can reduce the cutting force, can be in the aerospace industry materials and medical equipment to cut off the long chip in the alloy material processing. With HPG is the same, the product also provides new materials, such as KCMS15, this is a high wear resistance of fine grained cemented carbide material products, adopt AlTiN coating resistant to abrasion, can prolong the service life of the cutting tool. For cast iron, ductile iron and vermicular iron, HPC trough type with four edges and rounded drilling design, can avoid these common collapse when the blade edges in materials processing and cracking phenomenon, its special design capacity of crumbs slot before the blade cooling hole design, can rapidly discharge chip.

The patented cone interface design can provide the maximum rigidity and precision for KenTIP FS, and the locking device can avoid the cutting tool. All of these blades are designed with a 143-degree drill point Angle and are treated with a special cutting edge, polished, or cutting edges to ensure optimum service life. In the use of HPG, HPC and HPL groove, KenTIP FS can cope with solid carbide drill machining range of a variety of application requirements, but its unit artifacts costs are much lower, performance is more outstanding, even Schmitt said.

The cooling performance is very important, but the biggest difference between KenTIP FS is not its cooling supply system, is not a new type of cemented carbide material, nor its through polishing processing chip groove or design of the cutting tools - the biggest difference is the installation interface device. KenTIP FS not only large size KSEM and KSEM Plus bit blade strength advantages, and also have the similar to KenTIP users are very familiar with the rapid change of performance - just a blast device away the dirt of the cutter holder, the blade in place and slightly adjust, and then use the provided intelligence wrench to tighten. This performance is not common in other products. This is because KenTIP FS adopts the patented tapered interface design to provide maximum rigidity and precision. It can prevent the bit from falling off, and the large supporting surface can withstand the extreme twisting torque to avoid the deformation of the blade. There is no installation screw for the whole carbide blade, so no damage to the clamping device will be caused when the chip or workpiece is in contact. The combination of these features ensures that KenTIP FS has excellent performance in the application of severe cutting conditions and can cope with the severe challenges in the daily processing of processing plants.

One of the best things about KenTIP FS is that it's a sustainable product. This product is not like a solid carbide drill and many modular drilling products need to be worn. The blades can be applied to full performance, and new knives are replaced, and old knives are recycled through kenner metal's recycling service and refunded. There is no need for the eccentric adjustment of the grinding tool, and the performance disadvantage of the old bit compared with the new bit is not required. Tool life and production volume thus have better predictability. When high speed rotation of drill bit to avoid the demand for grinding (without special attention to the blade is much lower than the cost of solid carbide drill), so the cutting tool can significantly reduce the overall cost. KenTIP FS rigidity and stability of the interface device is incredible, because this product adopts full hard alloy tool bit design, the interface device can withstand higher heat, compared with other competitive drilling products have better competitive, Schmitt said. Frequently, some, of course, only a solid carbide drill can cope with the extreme conditions of processing applications, but for what we observed that about 90% of the processing of applications, this latest design products processing applications in a variety of material has very good performance. Kenna metal company has invested a lot of time and energy in the optimization of KenTIP FS products. We look forward to providing this high performance product to our customers.

KenTIP FS provides 6-26 mm diameter. The product is easy to use and the drilling quality is good. In a variety of material applications, this product is competitive compared with the solid carbide drill