The Best Drill Bits for Stainless Steel, Tested and Reviewed - what are the best drill bits for drilling metal

While Carbide bits and tips last longer, they still need to be periodically replaced. Fortunately, the recycling incentives for the material are very fruitful, offering yet another reason to use it in mass. Carbide recycling facilities like Carbide- USA will pay top prices per pound for scrap. This helps to keep production costs down while allowing workers to use the highest quality tools and accessories day to day.

The main difference lies in the insert shape. DNMG inserts have a rhombic shape, with a 55-degree angle between the two opposite cutting edges. On the other hand, TNMG inserts have a triangular shape, with a 60-degree angle between the two opposite cutting edges.

DNMG inserts typically have four cutting edges - two primary cutting edges and two secondary cutting edges. The primary cutting edges are located on the longer sides of the rhombic shape, while the secondary cutting edges are on the shorter sides. TNMG inserts, on the other hand, have three cutting edges - one primary cutting edge and two secondary cutting edges. The primary cutting edge is the longest edge of the triangular shape, while the secondary cutting edges are the shorter edges.

Drilling and mining tools made from cemented carbide are used for various construction applications and account for the greatest use the material anywhere in the world. In fact, about 65% of the market goes into making mining tips, drill bits, and other cutting and mining tools. Tungsten carbide products are preferred even over stainless steel because of their incredible hardness and resistance to wear and tear.

DNMG and TNMG inserts are available in various sizes to accommodate different lathe tool holders and machine setups. The size designation typically includes information about the insert shape, cutting edge length, and thickness.

Due to their different cutting edge configurations, DNMG and TNMG inserts exhibit slight differences in chip control. DNMG inserts tend to produce shorter and more manageable chips, making them suitable for applications where chip control is critical. TNMG inserts, on the other hand, are designed to handle larger chip loads, making them more effective in heavy machining operations.

When making the choice of turning insert, going for the right insert of required job is just half the battle done. There are also steps like choosing the best chip breaker and grade that also need to be done. Whether you are going for a DNMG insert or a TNMG insert, the very first thing that you need to consider is whether you are simple going for general turning or for finishing or roughing. Here, it is important to note that the negative inserts tend to be the strongest. Thus, they are the most perfect options for general turning and roughing applications. That’s because they make way for deep cut depths and higher feed rates because of thickness and strong insert shapes.

Just over 10% of tungsten carbide is used exclusively for the manufacture of mill products including various end mills and mill inserts. These products vary in size and shape depending on the material they will be coming in contact with, but all are used for applications in grinding and milling. Because carbide is so hard and can be easily molded, it is possible to create accessories for precise milling applications that will yield coarsely grinded material or the finest powder.

The use of carbide in the medical industry offers another important application for the material because the tools that are made from it are often being used to save lives. Surgical tools are one of the most notable uses for grafted carbide as the stem of the tool is typically made of stainless steel or titanium, while the blade, tip, or end is made from carbide. Not only can carbide blades be sharpened to have a much finer edge due to the material’s hardness, but its resistance to pitting and rusting helps to give tools tipped with it much greater longevity.

Roughly 17% of tungsten carbide usage comes from the creation of specialized alloys and composite materials that contain other metals in them. Carbide can be combined with nickel, iron, silver, and copper to create materials that are utilized in commercial construction applications, electronics, industrial gear making, radiation shielding materials, and the aeronautical industry.

The above three applications make up more than 90% of carbide usage across the globe. However, one of the newest applications for tungsten carbide that is gaining popularity every day for making jewelry. Naturally, the hardness of carbide makes it an attractive alloy to use for crafting rings, pendants, earrings, and other jewelry, but when cut and polished correctly, the material is actually stunningly beautiful as well. In fact, tungsten based wedding and engagement rings are becoming all the rage lately and since tungsten carbide is cheaper than gold, it is cost effective as well.

Carbide is used for many other applications including tipping trekking or ski poles as well as cleats, the manufacture of fishing weights, and many cutting and pulverizing mechanisms for recycling machines. Always remember that regardless of what you might use carbide for that you recycle the material appropriately after it has run its course. Less than 10% of the world’s tungsten is found in the United States and it is up to each and every one of us to do our part in order to ensure that we are relying on foreign material as little as possible. The financial incentives that come from recycling carbide for you as well as the implications for the industry domestically are worth the time and effort.

For finishing jobs, the positive inserts always serve as the best option because they have the ability of creating less cutting forces. Therefore, they can easily get away with low cut depths while eliminating vibration at the same time. The DNMG or Diamond 55 degree insert is one of the most well-known roughing inserts. These inserts come with 55 degree included angle and can effectively be used for shaft turning and recessing. They are preferred over the TNMG inserts mainly because they produce less cutting force.

Contact one of the customer service professionals at Carbide- USA to learn more about our tungsten carbide recycling program.

In conclusion, while DNMG and TNMG inserts share similarities in their usage for metal turning operations, they differ in terms of insert shape, cutting edge configuration, application, chip control, and size. Understanding the differences between these insert types can help machinists select the most suitable insert for their specific turning needs.

There are lots of metal compounds that are heavily used for various applications across the planet, but there are none that possess the particular attributes of tungsten carbide. This marrying of the element carbon and tungsten creates an alloy that is resistant to heat, rust, scratches, and pitting. Carbide also boasts an extremely high density with a hardness second only to diamond, excellent conductivity,  all while boasting an overall strength that surpasses that of steel three times over. This compound is easily molded into many shapes, can be sharpened with precision, and can be melded with or grafted to other metals without issue. Tungsten carbide scrap is also one of the best candidates for recycling in its class, making the alloy extremely valuable for all sorts of applications, including those discussed below.

DNMG inserts are commonly used for general-purpose turning operations, suitable for both roughing and finishing cuts. They are versatile and can handle a wide range of materials and cutting conditions. TNMG inserts, on the other hand, are primarily used for medium to heavy-duty turning operations. They are designed for roughing applications and are particularly effective in removing larger amounts of material.