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Coolant Ring Technology (CRT) holders from Scientific Cutting Tools are made from high quality heat treated steel and come with a black oxide coating. They are engineered to allow for better coolant penetration deep into the bore, reducing temperature at the cutting edge, the company says. The overhang of the tools used with the holders is infinitely adjustable CNMG Insert rather than fixed, allowing for maximum performance without chatter or other performance-related issues.

The CRT holders can be used in conjunction with the company’s qualified boring bars and/or qualified threading tools for quick change machining at optimal performance Carbide Milling inserts levels, according to the company. Qualified boring bars have an overall length that is qualified to ± 0.001” and a minimum bore diameter that is qualified to ± 0.0005”. They can be used in conjunction with the CRT holders for quick-change setups or with our QHC holders when a backstop is used (sold separately). The CRT holders used in conjunction with the qualified boring bars have the advantage of more effectively delivering coolant to the cutting edge.

The Cemented Carbide Blog: TCMT Insert

I define a CNC machine tool’s accuracy as how precisely its axes can follow intended paths to commanded endpoints while under load. I define its repeatability as how precisely it can duplicate commanded motions (again, under load) during multiple cycles throughout the day.

These are definitions for dynamic accuracy and repeatability. They likely vary from your machine builder’s specifications. Builder specifications commonly Surface Milling Inserts indicate static accuracy and repeatability; that is, the machine is not in cycle performing machining operations when related measurements are taken.

In fairness to machine builders, dynamic accuracy and repeatability vary with the amount of stress exerted on machine components. The greater the stress, the more difficult it is to maintain accuracy and repeatability. This makes it impossible for machine builders to provide, much less guarantee, dynamic accuracy and repeatability specifications. There are simply too many variables.

That said, machine builders should be able to establish whether their machine can achieve accuracy/repeatability requirements for your particular application. They should be willing to guarantee as much if you ask them to do so prior to purchasing a new machine tool.

Certain accuracy-related factors are beyond a CNC user’s control once a machine is installed. These include:

• It must be able to perform the most powerful machining operations in your application without excessive deflection of its support components.

• Linear scales directly monitor the position of the moving component for an axis. Unlike rotary encoders, they are not highly dependent upon the integrity of axis system components (way systems, ballscrews and couplers).

Other accuracy-related factors are the responsibility of the machine user. These include:

• Machine builders initially calibrate pitch error and backlash compensations, but if accuracy is to be maintained, end users must repeat these calibrations at regular intervals during a machine’s life.

• Machine tools must be placed in a stable working environment that minimizes ambient temperature and humidity variations.

Ensuring that a machine installation can provide adequate dynamic accuracy for your application—and keeping it properly maintained—is but half the issue of producing consistent, acceptable components. You must also confirm that the machine can accurately repeat from the first workpiece to the last—hour after hour, day after day—even as machine components warm up after idle periods.

An important repeatability-related issue linked to machine design is thermal variation of moving components. Primary concerns are the machine’s spindle and way systems because they have the biggest impact on machined surfaces. As these components warm, they grow. As they cool, they shrink. This makes it difficult—maybe impossible—to hold size on critical, tight-tolerance surfaces during the machine warm-up period.

Machine builders go to great lengths to minimize thermal changes in machine components (cooling the spindle and/or way systems, for instance). Additionally, they incorporate design methods that minimize the repeatability impact of thermal variation. With CNC turning centers, for example, the headstock may be perpendicular to the bed. As it warms, only the height of the cutting tool’s edge changes. This minimizes the amount of machined diameter variation from part to part as the machine warms up.

When purchasing any new CNC machine, you should understand how the builder deals with thermal variation. More importantly, you must confirm that machined-surface variations caused by thermal growth during warm-up will not exceed tolerances. Otherwise, you could be in for a productivity-wasting surprise when you discover that your new machine must run for a warm-up period before it can be used in production.

Some of the most severe repeatability issues have nothing to do with machine design. Instead, they are influenced by the machine’s application. Variations of any kind—during a production run or from one time a job is run to the next—can impact repeatability. Things that change from cycle to cycle will cause the need for a time-consuming adjustment. If the variation is great enough, it could result in scrap.

Examples of variations during a production run include:

• Tool wear. As cutting edges wear, machined surfaces will vary. External surfaces grow while internal surfaces shrink.

• Dull tool replacement. When dull cutting tools are replaced, extreme caution is required to ensure that cutting edge(s) do not vary from their predetermined position(s).

From one time a job is run to the next include:

• Workholding setup. Many factors affect workpiece stability (placement/alignment of the workholding device, clamp location and force applied, and program zero assignment, for instance).

• Cutting tool Carbide Turning Inserts assembly, measurement and offset entry. Component and assembly variations result in rigidity variations that can lead to machining issues.

• Machine condition. Variations caused by mishaps and the neglect of preventive maintenance can result in sizing problems with jobs that have run successfully in the past.  

The Cemented Carbide Blog: VCMT Insert

A lot has changed since the last in-person Doosan International Machine Tool Fair (DIMF) four years ago. The world has been through a global pandemic and is still dealing with the aftereffects in the form of supply chain disruptions and economic fluctuations. And Doosan itself has been through some major changes: in 2022, DTR Automotive purchased Doosan Machine Tools to create DN Group, consisting of DN Automotive (formerly DTR Automotive) and DN Solutions (formerly Doosan Machine Tools).

With these changes comes new technology and new business decisions. I was able to discuss these changes with DN Solutions President WJ Kim at the 2023 edition of DIMF, which included a showcase of machining technology at BEXCO in Busan, as well as a tour of the company’s Seongju factory in Changwon with additional demonstrations from larger machine tools. Read on to learn how DN Group is responding to the automotive industry, labor shortages, supply chain disruptions and sustainability, as well as how the company is working to support the U.S. market.

Conversation has been edited for length and clarity.

Modern Machine Shop

In 2022, DTR Automotive purchased Doosan and then created DN Solutions and DN Automotive. Can you tell me how DN Solutions fits into the DN Group's overall business?

WJ Kim 

DN Automotive, the mother company, formerly DTR Automotive, is very specialized in antivibration systems for automotive, and we have a long history in the automotive industry globally. This antivibration system is a very technically intensive product. So, we are very keen on developing R&D capabilities to properly and fully develop such products. The automotive industry is one of the key consuming markets in the machine tool industry, but otherwise there is no major relationship between the two industries. To diversify our business portfolio a bit, we decided to acquire DN Solutions. The automotive industry continues to bring plenty of opportunity, but who knows what will happen in the future. We have been looking for a new business area which gives us some additional growth opportunity for the future and to which we can add value.

We set three main criteria when going through the selection process. One is that we like to be a global business, a global player. At DN Automotive, almost 93% of our revenue comes from outside of Korea, like General Motors, Stellantis, BMW, and other global-oriented companies. Two, we wanted a global player that was technology-centric, technologically intensive. With our R&D capability, we don't like to be a commodity player. That's why R&D is critical. And finally, manufacturing is very deep in our DNA. We did market studies for several new potential acquisitions, but it turned out that none of them fit our DNA. Based on those three criteria we finally found Doosan Machine Tools, now DN Solutions, was the best fit for us. Looking at DN Solutions as a machine tool business, we are pretty well balanced. One of the biggest key industries for machine tools is automotive. Thirty percent of our total revenue at DN Solutions comes from the automotive industry.

DN Automotive has very deep knowledge and expertise in the automotive industry, so we can anticipate some synergy between the two companies. We see a few examples of how we expect some potential synergy.

One is on display here at DIMF, within some of our new product offerings. Newly applied for DN Solutions CNC machines, we have used a DN Automotive-developed technology for canceling vibration. The technology uses active damping to reduce vibration. I asked the DN Solutions and DN Automotive R&D teams to sit down together and find a way that we can collaborate. The result? They modified this active damping technology for machine tools and it has provided pretty impressive benefits to the product lines.

The second shared synergy is that there's a lot of automotive expertise inside of DN Automotive. They know about the future trends for OEMs. I asked both teams to sit down together to share that technology outlook and expertise as well. From our annual internal technology market research report on the DN Automotive side, we have shared the technical analysis with DN Solutions. These synergies have already benefited us in developing very good new products. We’re more competitive, more adaptable to automotive as a whole.

Modern Machine Shop 

Especially with automotive being your biggest end market.

WJ Kim 

Sure. DN Automotive is, as I said, a global company. We are operating in nine locations: of course Korea, China, UK, Italy, Poland, Germany, Brazil, Mexico, America. The top leadership from DN Solutions America came to me and said, we need to do something better in Mexico, like a parts center, a client support or technical center. DN Automotive has a very big facility in Mexico. We built up our parts center and service center within just one month after we made the decision. And the same in Detroit. We opened up a satellite technical office inside of DN Automotive. We already have VBGT Insert plans in the works or have completed additional locations for DN Solutions America in Mexico, Detroit and Chicago. We know how to be present where customers and distributors need us.

Modern Machine Shop 

The US and other countries are experiencing a shortage of skilled workers and a trend is manufacturers looking to automation to try and fill that gap. What automation solutions does DN offer?

WJ Kim 

Our ultimate goal is to make our machine tools operate unmanned for 24/7 operation. But we cannot do everything by ourselves, in terms of automation.

Once a job shop or automotive company decides to implement automation, their next step is that they want to run the machine for 24 hours. What does that mean? From the beginning of product development, we have Turning Inserts to consider how we can make the machine itself better, more robust, more solid in terms of durability, reliability, serviceability, even availability. That's from a machine tool perspective.

Once we decide to implement an unmanned operation, we have to monitor the system remotely. We are very interested in developing new technology based on digital twins. We'd like to make a machine tool a platform to support client automation. We already developed an operating system called CUFOS, Customer User Friendly Operating System, which is PC-based. On top of that, we’d like to build an API for other kinds of collaboration with robotic companies, so they can easily implement software and hardware together with DN Solutions. We are keen on developing an ecosystem that provides comprehensive solutions for automation and a total system approach.

Modern Machine Shop 

Can you talk about how DN Solutions is thinking about sustainability in manufacturing?

WJ Kim 

Sustainability is a key to our future. Of course, saving energy is critical. But my view is to improve reliability at the same time. Twenty-four hours of operation without downtime is also a way to save energy. If the machine itself crashes, we have to spend unnecessary energy and effort to fix it. That's why we will continue to further invest in developing monitoring systems and digital twins. If we can implement sophisticated digital systems, they can do things digitally with no energy consumption. We have also developed a mist-free solution for oil mist purification which minimizes motor power, resulting in reduced power and maintenance costs. These may be small examples of what we are doing; however, they are good ways to get there. That’s my view on sustainability. I like to start with small things you can do and keep building.

Modern Machine Shop 

Yeah, exactly. I think people, especially job shops, need small things that they can do and think about and it'll be a good starting point for them. We've talked about automotive a lot already, but can you talk about how the DN Group is responding to all of the changes in the automotive industry with it going electric?

WJ Kim

The electric vehicle itself is evolving. DN Automotive’s vibration management system partly is to cancel the vibration on the engine. Looking deep into the ICE automobile, there are between 55 and 60 vibrating components, like the engine mount, body mount, tire mount, suspension bushing, and many more. Inside electrified vehicles, the number of parts is increased to between 60 and 65 on average. Why? As ICEs go away, more motors come in. So maybe we can provide some kind of a motor mount.

Also, drivers can get very sensitive about noises coming from the road outside. The engine usually cancels it, as the engine noise is much louder. But as it goes away, they hear noises coming from the road. That means that we need more sophisticated, more high-quality mounts to cancel that noise. Having said that, as EVs evolve, DN Automotive is a big beneficiary.

How about the machine tool industry? As I said, the automotive industry represents 30 percent of our total revenue, and as the engine goes away, yeah, it is true that we lose the opportunity on the machining for the engine side. But there are a lot of small, very precise machining solutions needed to develop to produce EV motors. What about the battery? The battery pack, battery case is very critical, right, same problem. It offers us additional opportunities.

Modern Machine Shop 

Can you talk about the U.S. market and how that fits into DN Solutions as a global company?

WJ Kim 

The US market is our number one market for sales. For many machine tool companies the US market is number one. It offers us great growth opportunity. Our ultimate goal is to be a top, global, technology-based manufacturing solution leader. That means that we need to have the capability to be a total systems provider. There are many different sets of clients in America. Job shops may have different requirements than big enterprise clients. America is also a core part of our business in terms of geography. That's why we decided to build up our own technical center in Chicago. But the center must be differentiated from our partners. We’ll have technology specific for target industries. Like in America now, a lot of the big demands are coming from the semiconductor, IT, medical and electrified vehicle markets.

And just to elaborate a little bit further, differentiating from our partners, meaning our distributors, because they're excellent with the service, but what value add can we give to the customer? We want a place where machine tools really are hands-on, where we can connect our customers with other customers and set up solutions that are maybe otherwise scary to some machine shops. Automation, like pallet pools, or remote monitoring through MTConnect with iDooCare and that type of thing might seem scary or out of reach to a new user. Those kinds of things might seem a little more achievable when a customer can come see it in action at the OEM’s facility. We can show them, train them and let them come back as often as they’d like. Maybe some of that evolution of automation and AI and things like that is not scary anymore. That’s just a part of the technical center we are building in Chicago and other locations in North America.

We have hired some of the leaders for the tech center. And we are now in the middle of the process to hire another four. And because collaboration between America and Korea is quite crucial, I plan to send some proven, talented engineers from Korea to America. Accessibility to the professionals who really are building and designing the machine tools and technology, and bringing that intelligence to the U.S is a big change for us. But it's the right direction for a solutions provider. So we're excited for that.

Modern Machine Shop ?

Do you have an estimate for when the tech center will be open?

WJ Kim 

We are lucky because we found a very nice building. We need to renovate. I cannot say exactly, but my plan is to open up to people next IMTS.

Modern Machine Shop 

Reshoring is a big trend in manufacturing in every country. Can you talk about how it's affecting DN Group both as a manufacturer of automotive parts and as a supplier of manufacturing equipment?

WJ Kim 

Yes, reshoring. We’ve seen many different perspectives. On the machine tool side, we are very aggressively developing a local supply chain inside Korea. That’s one way to prevent any potential challenge to us. That's our number one action we’ve taken to prepare for reshoring.

It can give us opportunities, especially on the automotive side, because we have a very nice facility located in Mexico. So Mexico is now working to supply key components to the Americas, especially to automotive manufacturers.

Of course, we also have an eye on what reshoring means to the customers, so we’ve drastically increased inventory in the US so that they can be responsive to their production requests.

Modern Machine Shop 

What are some challenges to doing business in the US, and opportunities that you see in the U.S. market?

WJ Kim 

Of course, it's a mixed opportunity. A lot of big Korean companies like Samsung, LG and SK are rushing to America to build up battery and semiconductor manufacturing. Samsung invested a lot of money to build up a semiconductor plant in Austin. Now, it's not only Korean big companies, we also see that there are a lot of big movements in America to making semiconductors and electrified vehicles. We are very good at developing new machines that are very, very, very compatible for the semiconductor industry because we have Samsung, we have SK, we have a lot of experience to work with. Same for the battery. Same for electrified vehicles. Of course, there is a risk with export control.

Evidence of all of these changes was visible across DIMF. The Bexco exhibition included demonstrations of the vibration damping technology developed with DN Automotive, a variety of forms of automation (including AGVs, pallet changes and cobots), solutions for machining semiconductor materials (such as grinding and laser cutting machines) and digital solutions (Smart Thermal Control software to calculate thermal displacement; new functions for the CUFOS control including table balancing, power consumption monitoring, tool management and sketch cycles; digital twins; and iDOOCare machine status monitoring and maintenance). Machining applications for the automotive industry were also among the demonstrations at the Seongju factory, showing larger machines for making dies and molds.

The Cemented Carbide Blog: TNMG Insert

With three 14-position tool turrets and identical main and counterspindles, the new space-saving Index C100s are designed for fast, cost-competitive production of medium complexity parts turned parts from bar stock from 30 to 42 mm diameter. The C100 will be at IMTS Booth S-8136.

Ideal for small to medium lot sizes, the three-turret machines deliver high performance within a small floor space, and are targeted to handle fixed headstock work often run on Swiss-type machines.

The Index C100 offers users a highly productive means of machining stock in the 30 to 42 mm range with more tools (42 quick-change tools, fixed and driven), higher horsepower, and greater torque but with the rpm typical of Swiss-style machines.

The C100 with 30-mm bar capacity comes with 9,000-rpm spindles and 42-mm bar capacity is available with 7,000-rpm spindles. Both versions can run parts ranging to 200 mm in length. The C100 drives are powerful: 20/29 kW and 25/29 kW (100/40 percent) for the 30- and 42-mm versions, respectively. Motorized main and counterspindles are identical and liquid-cooled.

The machining flexibility of the C100 is a keynote of Index technology. Up to three tools can be at work simultaneously with both Y axes and backworking at the same time. And the counterspindle with linear-motor driven Z axis can be synchronized with travel of turret 3. Counterspindle pick-up from the spindle is accomplished in just 1.5 seconds.

Because the C100 is configured to complete a wide range of parts from simple to complex, small to large batch sizes, users can expect extremely high machine utilization rates, which allow the C100 to be very cost-effective. Parts can be unloaded from the main or counterspindle.

Simultaneous machining with two Y axes at the main spindle or a Y axis at the main spindle and also one at the counterspindle—each with 70 mm of travel—gives users the option to Cermet Inserts divide machining operations for optimum machining efficiency and flexibility This freedom also is a key to reduced cycle times. For example, users can machine simultaneously with up to three tools driven tools for complete machining in a single set-up, including heavy milling, and backworking with up to five tools.

The turret slides move in the X and Z directions on innovative single-plane guide ways. This permits rapids up to 60 m/min. and accelerations up to 1 G with maximum rigidity. The plate-type guideway of the turret slides also means turrets glide directly on the machine bed, assuring high stiffness and dampening, resulting in longer tool life—up to 30 percent longer tool life and better surface finish.

The open work area and vertical-bed machine design permits clear chip fall.  

Each MGMN Insert position on the 14-station turret is equipped for preset driven tools. Large tooling capacity means short setup times and very fast cycle times even for small batches. Tools are more easily accessible than on a Swiss machine and can be changed quickly. They lock with only one screw.

The CNC is easy to work with; plain text is used in display and operation and the screen shows all spindles and axes at one view. Superior programming with more than 70 user routines offers practical support down to the finest detail. Index programming contributes to optimum machine utilization and maximum productivity.

Assuring operator safety was a design consideration for the C100. Absolute measuring systems know axis and tool positions in every situation.

Visit the company's IMTS Showroom here. 

The Cemented Carbide Blog: http://leandercle.blogtez.com/

Precision Cutting Technologies Inc., holding company of Bourn & Koch, has acquired Supermill LLC, a Connecticut manufacturer of high-performance carbide end mills. 

“We are excited to partner with Tom Hale, founder and president of Supermill, as well as his talented and experienced team of associates,” says Terry Derrico, president of Precision Cutting Technologies. “The acquisition of Supermill enhances Precision Cutting Technologies’ portfolio of cutting consumables SNGX Insert and strengthens its position in the Northeastern United States.  As in our past acquisitions and reflective of our strategic partnership approach, Tom will continue to lead the company post-transaction, and Supermill’s day-to-day operations will not be impacted. However, we believe that Supermill will now be able to take advantage of the infrastructure and national sales reach of the Precision Cutting Technologies platform.”

“After 30 years of growth, I am happy XNEX CNC Insert to have found a long-term home for the company and our loyal employees,” says Mr. Hale. “I look forward to what we will build together with the team at Precision Cutting Technologies in the coming years, staying true to Supermill’s reputation for reliability, innovation and customer service.”

The Cemented Carbide Blog: Lathe Inserts

Kyocera SGS Precision Tools has expanded its H-Carb seven-flute, high-efficiency end mill series with an array of larger corner radii options.

The H-Carb SEER Insert Series 77 end mills specialize in deep axial trochoidal and high-speed machining applications and are offered in various lengths of cut. The specialized core and flute design improve rigidity and chip flow while reducing deflection. The seven-flute design is designed to enable superior finishes at higher speed and feed rates versus five- and six-flute tools.

The H-Carb portfolio now includes 72 new tools featuring 2-, 3- and 4-mm corner radius sizes and are available in three lengths of cut (2.5×D, 3×D and 4×D). Coatings are available in Ti-namite-A and Ti-namite-M, making them suitable for dry machining in ferrous-based materials such as cast irons and numerous carbon steels. The chipbreaker profile is standard with a wide range of square end and corner radii options offered to meet a variety of machining CNC Carbide Tool Insert specifications.

Benefits of the portfolio include a  heavy-duty core and specialized flute design for improved rigidity, chip flow and reduced deflection; a chipbreaker profile that aids in chip flow, especially in deep pocketing operations; deep pocketing and slotting capability using the various lengths of cut offered applying a trochoidal tool path; and CAM programming methods using high-efficiency machining by applying trochoidal tool paths and incorporating constant cutter engagement.

The Cemented Carbide Blog: APKT Insert

Great Smoky Mountains National Park has about 2,115 miles of streams within its boundaries, and protects one of the last wild trout habitats in the eastern United States. The park offers a wide variety of angling experiences from remote, headwater trout streams to large, coolwater smallmouth bass streams. Most streams remain at or near their carrying capacity of fish and offer a great opportunity to catch these species throughout the year.Fishing is permitted year-round in the park, from 30 minutes before official sunrise to 30 minutes after official sunset. The park allows fishing in all streams EXCEPT the following streams tungsten cheburashka sinker and their tributaries upstream from the points described:North Carolina Bear Creek at its junction with Forney Creek.Tennessee Lynn Camp Prong upstream of its confluence with Thunderhead Prong.These streams are closed to fishing to allow fish to repopulate following restoration work. For the exact location, consult the appropriate USGS 1:24,000 Quadrangle Map available at park visitor centers. Detailed information, including a complete list of regulations and a map of fishable park waters, is also available at any visitor center or ranger station.License Requirements You must possess a valid fishing license or permit from either Tennessee or North Carolina. Either state license is valid throughout the park and no trout stamp is required. Fishing licenses and permits are not available in the park, but may be purchased in nearby towns or online (links provided by state below). Special permits are required for fishing in Gatlinburg and Cherokee.Tennessee License Requirements Residents and nonresidents age 13 and older must have a valid license. Residents age 65 and older may obtain a special license from the state. Buy a license from the state government of Tennessee.North Carolina License Requirements Residents and nonresidents age 16 and older need a license. Residents age 70 and older may obtain a special license from the state. Buy a license from the state government of North Carolina.Persons under 16 in North Carolina and under 13 in Tennessee are entitled to the adult daily bag and possession limits and are subject to all other regulations.Season Fishing is permitted year-round in open waters.Time Fishing is allowed from a half hour before official sunrise to a half hour after official sunset.Daily Possession Limits Five (5) brook, rainbow or brown trout, smallmouth bass, or a combination of these, each day or in possession, regardless of whether they are fresh, stored in an ice chest, or otherwise preserved. The combined total must not exceed five fish.Twenty (20) rock bass may be kept in addition to the above limit.A person must stop fishing immediately after obtaining the limit.Size Limits Brook, rainbow, and brown trout: 7 inch minimum Smallmouth bass: 7 inch minimum Rockbass: no minimumTrout or smallmouth bass caught less than the legal length shall be immediately returned to the water from which it was taken.Lures, Bait, and Equipment Fishing is permitted only by the use of one hand-held rod.Only artificial flies or lures with a single hook may be used. Dropper flies may be used. Up to two flies on a leader.Use or possession of any form of fish bait or liquid scent other than artificial flies or lures on or along any park stream while in possession of fishing tackle is prohibited. Prohibited baits include, but are not limited to, minnows (live or preserved), worms, corn, cheese, bread, salmon eggs, pork rinds, liquid scents and natural baits found along streams.Use or possession of double, treble, or gang hooks is prohibited.Fishing tackle and equipment, including creels and fish in possession, are subject to inspection by authorized personnel.Safety Standing and wading in streams can drain body heat and lead to hypothermia. Rising water levels resulting from sudden mountain storms occur quite frequently, so monitor water levehttp://arthuryves.mee.nu/milwaukee

Several mouths ago, scientists with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) have used a unique nano-optical probe to study the effects of illumination on two-dimensional semiconductors at the molecular level. Working at the Molecular Foundry, a DOE Office of Science User Facility, the scientific team used the “Campanile” probe they developed to make some surprising discoveries about molybdenum disulfide, a member of a family of semiconductors, called “transition metal dichalcogenides (TMDCs), whose optoelectronic properties hold great promise for future nanoelectronic and photonic devices.2D-TMDCs rival graphene as potential successors to silicon for the next generation of high-speed electronics. Only a single molecule in thickness, 2D-TMDC Tungsten Carbide Plate materials boast superior energy efficiencies and a capacity to carry much carbide rods suppliers higher current densities than silicon.http://leanderfit.mee.nu/the_most_powerful_facebook_marketing_tool

The use of molybdenum alloys significantly reducing wear during machining has been proved by laboratory tests carried out at the Vienna University of Technology, in the course of developing new PVD coatings for wear-protection applications, according to Plansee.

The service life of tools and coatings used in a wide variety of cutting processes is determined by wear such as adhesion and abrasion. tungsten alloy bar Increasing the hardness is generally an effective approach to minimising abrasive wear, but Plansee states that this solution only works for a specific range of applications, and has no effect on those wear mechanisms that are related to adhesion.

In order to improve tool wear resistance and lifespan, Plansee, Oerlikon Surface Solutions AG and the University of Technology Vienna (TU Wien)’s Institute of Materials Science and Technology, have conducted a research programme into the effect of molybdenum on the wear behaviour of arc-evaporated Ti-Al-N coatings. The research was conducted at one of TU Wien’s Christian Doppler laboratories.

According to Plansee, the findings clearly showed that in situ formation of solid, self-lubricating phases such as MoO3 led to a significant reduction in adhesive Cemented Carbide Inserts and abrasive wear. The use of targets produced using powder metallurgical methods (Plansee Composite Materials GmbH) allowed the deposition of single-phase, face-centred cubic coatings with a Mo content of up to 12 at.%. This high alloy content also had a very positive impact during wear tests up to 700 °C.

Stefan A Glatz, Vincent Moraes, Christian M Koller and Helmut Riedl have released details of the research findings in a paper titled ‘Effect of Mo on the thermal stability, oxidation resistance, and tribomechanical properties of arc evaporated Ti-Al-N coatings’ that highlights benefit of molybdenum on Ti-Al-N coated tool wear resistance, published in the American Vacuum Society’s Journal of Vacuum Science and Technology.

http://www.blogster.com/stevennico/renewable-non

Molybdenum market quotation in China: ferro molybdenum, molybdenum powder and molybdenum oxide prices reduced slightly in the week began on Monday January 25, 2021 under many instabilities in the market.

Now both buyers and sellers are not active in trading and thus transactions are limited. However, with the support of production costs, sellers are not likely to reduce product price. in the short term, insiders will mainly focus on the new carbide rods suppliers steel tenders as well as constrained transportation’s influence to the market.

According to data from the China Iron and Steel Association, in mid-January 2021, the average daily crude steel output of key steel enterprises was 2.2181 million tons, an increase of 22,500 tons from the previous month, an increase of 1.02%, and an increase of 12.31% year-on-year. In mid-January 2021, the steel inventory of key steel companies was 14.0431 million tons, an increase of 1.016 million tons from the previous month, an increase of 7.8%; an increase of 3.2401 million tons, an increase of 29.99%, compared with the same period last year.

Prices of molybdenum products on January 25, 2021

Picture of molybdenum block

Follow our WeChat to know the latest molybdenum price, information and market analysis.

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