An Improved Method for Machining Blisks

Why does a cutting tool company now offer CAD/CAM software products? Sandvik Coromant, a well-known cutting tool technology company headquartered in Sweden, recently acquired software companies CGTech, ICAM and CNC Software Inc. Helen Blomqvist, who became global president of Sandvik Coromant in 2020 just as these acquisitions were beginning, says it has never just been about the cutting tools. The company has long sent specialists in Sandvik’s signature lab coats to advise machining facilities; Blomqvist emphasizes the company has always provided solutions rather than just tools.

Yet changes in machining technology, and in the nature of some machined parts for long-standing markets (notably the automotive industry in its shift to electric vehicles), make the elements of the machining process increasingly interdependent. That means the solutions must draw on more than the cutting tool alone.

I explored this shift with Blomqvist in a recent conversation. Here is how she sees her company changing and advancing in response to shifts in manufacturing and machining:

Peter Zelinski, Modern Machine Shop: Sandvik Coromant has made some acquisitions recently that are very different from cutting tool product offerings, so let’s use that as a starting point. Help me understand the growth in the role Sandvik Coromant would like to play for manufacturers. How should we think about Sandvik Coromant, given for example its software acquisitions? What is the thumbnail description of the company as it is now? Or as it's aiming to be?

Helen Blomqvist, Sandvik Coromant: I think we have always been more than a tool supplier. I think we are very much known for our deep knowledge in machining, and for supporting our customers with many different problems. This is our core.

Looking into how we are developing, our growth journey and recent acquisitions and so on, it has very much to do with the changes that we see in the PNCU Insert industry. It's not only about machining a component, it's very much looking at the whole manufacturing value chain. Part of our strategy to become a market leader is to take a leading position earlier in the decision process of our customers.

When you start to think about machine investments, you need to think about how you design a component, how you optimize the code, how you machine it in the best possible way and how you verify it in the end. The whole chain is of interest to us, and as customers change their behaviors and how they make decisions, we aspire to come in and be there earlier in that value chain.

I see this as representative of the kind of problem solving our yellow coats have done for years to support our customers. We also see more opportunities to support our customers much more through Shoulder Milling Inserts services: not just how to optimize and how to introduce lean and productivity improvement programs, but also other types of services as well. So that's where we are going, but it's also part of our DNA, so it's a very natural development.

MMS: Onsite problem solving has been a part of your formula. I guess part of what I'm hearing you saying is there’s an extent to which the yellow coats’ ability to solve problems is constrained if they don’t yet have access to the full range of what goes into building a process. There’s a limit to what the cutting tool is able to accomplish if the right choices aren't made early on in the process — and you're participating more in all of that. Are there challenges in the industry now that speak to this?

Blomqvist: One notable opportunity is the increased digitalization in the industry. You could also see the higher pace of electrification as a challenge for us as a company, but we choose to see this as an opportunity.

The components are changing in electric cars and battery applications. When you look at combustion engines, they’re very much standardized. That's where we come from, with standardized tools, standard inserts and all of those things. Electric cars are another type of business in the way that it's more customized, more project-type work with fast-paced design and manufacturing. It’s a more creative process.

So electric cars are a bit different, and then of course the aluminum material they use is different to machine than steel, carbon steel, cast iron or something like that. But this is nothing new to us — we have products on the market that support aluminum machining. Partnerships are also important for digitalization, meeting sustainability challenges and opportunities, and electrification. You cannot do everything by yourself; you need to develop partnerships to ensure you have the right competence plus the right people and suppliers in order to be successful in that business.

MMS: When you speak of the electric vehicle market as being more customized, that's interesting to me. With an internal combustion car, parts like a camshaft look the same for every company. But we haven't figured out the industry-standard way to make an electric car, and the experience you're having is that different producers have different ideas about how they want to make the same types of parts. And you need to respond to that.

Blomqvist: Yeah, exactly. That challenge creates interesting opportunities for improvement in our working processes. To meet them, we’ve grown organically, but also through acquisitions. Growth is also about our people, and something I think is important that we put a lot of attention to is creating a learning culture. This is super important for us to keep innovation and creation in the company. This culture empowers people so they are engaged and feel that they own their own development and can take control of it.

MMS:  Can you give me a sense of what a learning culture looks like when it’s implemented? What’s a distinctive element of Sandvik’s learning culture?

Blomqvist: First of all, I think it's very important to lead by example, to show everyone that it's okay to take the time for your own learning. That is what I expect everyone to do, and to make sure that they take responsibility for their own development plan. For example, I'm very open and share with the whole organization that I put 90 minutes every week in my calendar for my own learning.

I hope by doing that, I can inspire everyone and show that it's okay to take time for your own learning. I think this has been well-implemented in the organization, as my management team does the same. Different parts of the organization have learning days; some departments have Learning Fridays when they share their knowledge with each other. They read articles, take online training modules and do a lot of different things related to their job. It is important to upskill in the role you have, figuring out which areas you need to upskill to be more relevant to the company and do your job in even better ways. I think this makes employees feel engaged and empowered.

MMS: What does your 90 minutes of learning look like?

Blomqvist: I do a lot of different things. Last week, my management team and I underwent training about decision making, to make sure we are prepared to delegate important decisions — something easier said than done. But I also took my own training during the weekend when I was working out.

Frequently, I try to find people in the organization. Usually, they reach out to me, and want to share something they believe is important for me to know. Then I have 90 minutes with them, where they’ll teach me about it — the topic can be new products, offers, software, IT systems, production systems or anything like that. So I meet people, I take training together with my team and by myself, and then I also take LinkedIn and other online courses.

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Turning Machining of Aluminum Alloy Materials

PCD inserts, also known as Polycrystalline Diamond inserts, are cutting tools used in machining applications. They are designed to enhance cutting performance and tool life in various machining processes, especially in industries like automotive, aerospace, and precision manufacturing. PCD inserts are known for their exceptional hardness, wear resistance, and thermal conductivity.

Key features of PCD inserts include:

Polycrystalline Diamond Material: PCD inserts are made from synthetic diamond particles that are sintered together at high temperatures and pressures. This process creates a strong, uniform material with excellent hardness and wear resistance.

Cutting Performance: PCD inserts are used for cutting and machining non-ferrous metals, composite materials, and other abrasive materials. They excel in applications where traditional cutting tools like carbide inserts might wear down quickly.

High Wear Resistance: The hardness and wear resistance of PCD inserts allow them to maintain their cutting edge for a longer time compared to traditional cutting tools. This results in longer tool life and reduced downtime for tool changes.

Thermal Conductivity: PCD inserts have high thermal SPMT Insert conductivity, which helps dissipate heat generated during the cutting process. This characteristic is particularly beneficial in high-speed machining applications, as it reduces the risk of tool overheating and premature failure.

Smooth Surface Finish: PCD inserts can produce a smoother surface finish on the workpiece due to their sharp cutting edges and minimal tool wear.

PCD inserts are a valuable choice for precision machining applications that require high-quality surface finishes, extended tool life, and enhanced productivity. They have the potential to significantly improve machining processes in industries where maintaining tight tolerances and efficient production are critical.

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What are some common challenges or limitations associated with using carbide too

CBN inserts are cutting tools that use Cubic Boron Nitride (CBN) as the cutting edge material. CBN is a synthetic material that is extremely hard and has excellent thermal and chemical stability, making it an ideal material for cutting hard materials such as hardened steel, cast iron, and superalloys.

CBN inserts are commonly used in the machining industry for turning, milling, and boring applications. They are highly valued for their ability to maintain their cutting edge and cutting speed even under high temperatures and high speeds. This results in increased productivity, longer tool life, and improved surface finish of machined parts.

CBN inserts are available in a ECMN Grooving variety of shapes and sizes, and are typically used in high-precision machining applications. They can be used with a variety of cutting fluids, and are suitable for both wet and dry machining. However, they are generally more expensive than other cutting tools, such as carbide inserts, due to the cost of the CBN material.

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CBN Inserts, cbn inserts for stainless steel, cbn inserts for cast iron, cbn inserts hardness, cbn inserts for sale, cbn inserts materials, cbn cutting inserts, cbn cutter inserts, cbn inserts, cbn insert, cbn inserts for hard turning, cbn grooving inserts, grinding cbn inserts, cbn lathe inserts, cbn milling inserts, solid cbn inserts manufacturers, cbn pcd inserts, cbn TNMG Insert vs pcd inserts, cbn round insert, solid cbn inserts, cbn turning inserts, cbn threading inserts, cbn tool inserts

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Why Tungsten Rings Are Increasing in Popularity

As a strategic metal, Carbide Inserts tungsten is widely used in metallurgical machinery, petroleum chemistry, aerial and space industries and national defence engineering. So, today we are going to talk about tungsten supply and demand.

China has rich tungsten resources. During the past 10 years, China supplys more tungsten than the demand. By the end of 1998, China’s tungsten production capacity exceeded 35,000 tons. In recent years, the global demand for tungsten has been about 31,000 tons, whild China’s tungsten production in 1998 amounted to about 22,000 tons, making up 71% of the global tungsten demand.
VNMG Stainless Steel Inserts
At present, China’s domestic tungsten demand is about 8,000 tons and most of its tungsten is exported. While, excess tungsten exports have caused a decline in the global tungsten price, which is unfavorable to the development of China’s tungsten industry.
Varied international and domestic tungsten markets make it difficult to accurately predict the future demand for tungsten.
It is necessary to maintain and give full play to tungsten superiority tungsten carbide inserts to guarantee a sustainable development of China’s tungsten industry.
Above is about tungsten supply and demand.
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The Reason Why Tungsten Is Better Than Lead—(IX)Highly Corrosion Resistant

Background

Osmium has the highest optical emission rate of all metals. Consequently, after Edison’s carbon filaments, it was used at the beginning of the lamp industry. Osmium’s big disadvantage is its high vapour pressure, resulting in a short lamp life. Tungsten withstands considerably higher temperatures than osmium and has a very low vapour pressure, resulting in more luminosity combined with a long lifetime.

Wire Properties

Tungsten wire possesses characteristics that have provided it with a unique place in the origin and growth of the lamp industry. The lamp industry represents the largest commercial application of tungsten wire. It is used in this application because it displays excellent creep resistance at elevated temperatures. Tungsten is an attractive lamp filament material because it has an extremely high melting temperature (~3680 K) and a low vapour pressure at high temperatures. Tungsten is also intrinsically brittle and, initially, this prevented the manufacture of tungsten wire. However, at the beginning of this century William Coolidge, working at the General Electric Company, pursued the idea of deforming tungsten at elevated temperatures in order to make small diameter tungsten wire. Two important findings of his work were, first, to develop a method to work a powder metallurgy Carbide milling inserts ingot down to wire by using deformation at elevated temperatures; and, second, to produce a ductile material from this deformation. Today, the ability to handle tungsten wire and coil filaments without breakage is the backbone of the whole incandescent lamp industry.

Processing

The initial stages of thermomechanical processing of sintered tungsten ingot are usually performed by rolling and / or swaging. These operations allow large deformations at relatively high temperatures and during the initial stages of deformation the ingot reaches full density. By working the tungsten at elevated temperatures, the tungsten is maintained well above the ductile to brittle transition temperature but below the recrystallisation temperature. At various points during this deformation, anneals must be applied, or the tungsten Cemented Carbide Inserts will become overworked and begin to fracture. Finally, wire drawing is used to reduce the tungsten to its final desired diameter. At this point, the microstructure consists of fibres which have very high aspect ratios: they act like fibres in a rope and provide bend ductility.

It was not until the advent of transmission electron microscopy that potassium was located in small bubbles in the tungsten. It is these potassium bubbles which provide the wire with its unique high temperature creep resistance. Potassium is essentially insoluble in the tungsten. The bubbles are first formed from the doped powder in the ingot during sintering. During thermomechanical processing, these initial bubbles are drawn out into tubes. When the wire is annealed, these tubes break up to form the rows of bubbles.

Once wire drawing is complete, the tungsten can be coiled into a filament and recrystallised. When the wire is recrystallised, the grain boundaries interact with the potassium bubble rows as the boundaries migrate, giving rise to an interlocking grain structure.

‘Bamboo’ Structure

Recrystallized pure tungsten wire forms a bamboo structure: the grains occupy the entire wire diameter, and the boundaries are essentially perpendicular to the wire axis. At elevated temperatures, under the stress produced by gravity, these boundaries would slide past one another by diffusion and produce a rapid failure. However, when potassium is present in the wire, the interlocking grain structure reduces the rate of grain boundary sliding and extends the filament life. These bubbles continue to pin the grain boundaries at the temperatures of lamp operation, and thus maintain a stable microstructure during the life of the lamp.

Applications

Tungsten is used in many different types of incandescent lamps. The most common types are the general household lamps, automotive lamps, and reflector lamps for floodlight or projector applications. There are also many thousands of speciality lamps, which have a broad range of applications, such as audio-visual projectors, fibre-optical systems, video camera lights, airport runway markers, photocopiers, medical and scientific instruments, and stage or studio systems.

 

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