Tungsten & Sapphire Growth Furnace Price

Tungsten Carbide End Mill Clamping

Details: Category: Tungsten Information; Published on Friday, 24 October 2014 16:39; Written by xjq; Hits: 484

Tungsten carbide end mill in machining center normally adopts spring jacket clamping. During the milling, end mills may sometimes stretch out from toolholders or even fall off, causing the pieceworker scrapping. It is mainly because of the existing of oil slick between toolholder inner hole and the outer diameter of end mill handle, which results in the smaller clamping force. Therefore, before the end mill clamping, the end mill handle and toolholder inner hole need to be cleaned up.

However, even though the handle and the toolholder are both clean, when the end mill diameter is oversize, there could still be blade falling accidents, so when this happens, handles without gaps and the corresponding side lock method should be adopted.

The end mill being clamped may break at the edge of the toolholder during machining, and reason generally is that the toolholder has been used for a long time, resulting in a cone-shaped damage in its edge part. Therefore, the old toolholder should be replaced with a new one as soon as possible.

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Tungsten Carbide Ball End mill Introduction

Details: Category: Tungsten Information; Published on Friday, 24 October 2014 16:37; Written by xjq; Hits: 487

Tungsten carbide ball end mill, commonly equipped in milling machines, has a ball-shaped blade and is widely applied in various hook face milling and arc groove machining. It can perform normal operation under high temperature condition. As a type of end mill and a kind of die mill, it is also known as R end mill. It can be classified into two types: cylinder-shaped ball end mill and cone-shaped ball end mill.

Characteristics of tungsten carbide ball end mill:

Milling materials applied: die steel, cast iron, carbon steel, alloy steel, tool steel and general iron materials.

High temperature resistance characteristic: It can maintain its cutting property under a temperature up to 450-550/500-600 degrees Celsius.

Tungsten carbide ball end mills account for a significant proportion of finish machining cutters and is widely applied in various industries like aerospace, automobile, shipbuilding and casting, plastic molding, medical equipment, and so on.

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Tungsten Carbide Drill Bits Sharpening

Details: Category: Tungsten Information; Published on Thursday, 23 October 2014 18:06; Written by xjq; Hits: 577

When tungsten carbide drill bits get dull, the easiest solution is usually to just replace them. But since tungsten carbide drill bits are relatively expensive tools, it may be worth a few minutes of your time to go ahead and sharpen the bit yourself. This is easily done by gently moving the ridges of the bit against a spinning grinding wheel. Because tungsten carbide is kind of material of high hardness, you will need to make sure you use a diamond-surface grinding wheel to affect the hard metal.

Instructions to sharpen a tungsten carbide drill bit:

I. Put on safety goggles and canvas gloves. The goggles protect your eyes from sparks and debris. The gloves protect against accidentally pushing your fingers against the wheel and against burning yourself if the bit gets hot.

II. Turn on your grinding wheel. Hold the side of the drill bit next to the broad side of the wheel, so the bit is parallel to it.

III. Holding the bottom of the tungsten carbide drill bit, press the side of the bit lightly against the side of the spinning wheel.

IV. Turn the bit clockwise while moving it downward on the wheel. Make sure the surface of the wheel is coming in contact with the cutting ridge of the blade. You will be able to distinguish the parts of the bit that have been sharpened by the brighter shine on the metal. If you feel the bit getting hot, lift it from the wheel until it cools.

V. After you have sharpened the ridges of the tungsten carbide drill bit, touch any angles at the tip to the wheel to smooth them out and sharpen the edges. Take care to press only the flat side of each angle to the wheel, and not the point.

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Gold Plated Tungsten Alloy Paper Weight

Details: Category: Tungsten Information; Published on Friday, 24 October 2014 08:47; Written by Sherry; Hits: 508

Gold plated tungsten paper weight

Gold plated tungsten alloy paper weights are one of those items that you really don't realize you need until you have one. Now the executive can keep those papers in place or mark special piles in style.

Gold plated tungsten alloy paperweights can be engraved or imprinted with company logo.

Gold-plated-tungsten-paper-weight

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Tungsten Carbide Milling Cutter Selecting

Details: Category: Tungsten Information; Published on Thursday, 23 October 2014 18:03; Written by xjq; Hits: 507

Tungsten carbide milling cutters are more expensive than high speed steel, but last longer, and can be run much faster, so prove more economical in the long run. Tungsten carbide milling cutter selecting is not a simple task. There are many variables, opinions and lore to consider, but essentially the machinist is trying to choose a tool which will cut the material to the required specification for the least cost. There are four main factors to consider when selecting a tungsten carbide milling cutter.

I. Diameter:

Larger tools can remove material faster than small ones, therefore the largest possible cutter that will fit in the job is usually chosen. When milling an internal contour, or concave external contours, the diameter is limited by the size of internal curves. The radius of the cutter must be less than or equal to the radius of the smallest arc.

II. Flutes:

More flutes allows a higher feed rate, because there is less material removed per flute. But because the core diameter increases, there is less room for swarf, so a balance must be chosen.

III. Coating:

Coatings, such as titanium nitride, also increase initial cost but reduce wear and increase tool life. TiAlN coating reduces sticking of aluminium to the tool, reducing and sometimes eliminating need for lubrication.

IV. Helix angle:

High helix angles are typically best for soft metals, and low helix angles for hard or tough metals.

Tungsten Carbide Milling Cutter