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Tungsten Carbide Spline Hob Spline Joint

Details: Category: Tungsten Information; Published on Monday, 27 October 2014 18:49; Written by xjq; Hits: 516

Tungsten carbide spline hob spline joint consists of internal spline and external spline, which are both multitooth parts. The spline on the internal cylinder surface is called internal spline, while that on the external cylinder surface is called external spline.

Due to the differences in structure and manufacturing technique, tungsten carbide spline hob spline joint, compared to flat key joint, has characteristics in intensity, technique, and usage as follows:

I. Its joint force is more uniform due to its larger number of teeth and grooves produced directly and uniformly on the shaft and hub bore.

II. It has good guidance quality, which is very important to movable connection.

III. It has larger number of teeth and larger total contact area, and thus can withstand larger load.

IV. It has good coaxiality between shaft parts and the shaft, which is essential to high-speed and sophisticated machines.

V. It has shallow grooves, so the stress concentration is smaller in the teeth root and the intensity of shaft and hub is less reduced.

VI. The machining precision and joint quality can be improved through grinding.

VII. Its manufacturing technique is more complicated and sometimes special equipment will be needed, so that the cost is relatively higher.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com

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Tungsten Carbide End Mill Vibration

Details: Category: Tungsten Information; Published on Monday, 27 October 2014 18:47; Written by xjq; Hits: 538

Between the tungsten carbide end mill and the tool-holder, there exists small gap, which may result in vibration during machining. This phenomenon may cause uneven engagement of the circular blade of end mills, and increasing of cutting expansion to a value that is higher than the one set originally, and therefore the machining precision and service life of tungsten carbide end mills will be affected. However, when the groove width is too small, tool vibration can be achieved on purpose to increase cutting expansion, through which the groove width needed can be obtained. However, maximum amplitude should be restricted under 0.02mm, or it will not achieve stable cutting performance. Of course, during normal machining, it is better to have smaller end mill vibration.

When tungsten carbide end mill vibration occurs, operators should consider lowering the cutting speed and feeding speed. If there is still great vibration after both of them being lowered, then the reducing of cutting expansion should be considered.

If there is sympathetic vibration in machining system, it may be because that the cutting speed is too high, or the feeding speed is too low, or the cutter system lacks rigidity, or the clamping force is inefficient, etc. Therefore, when this happens, the countermeasures like cutting parameters adjustment, increasing cutter system rigidity and increasing feeding speed should be adopted.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com

Tel.: 86 592 5129696; Fax: 86 592 5129797

Email: sales@chinatungsten.com

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Tungsten Gold Plated Bar Story -- Aliens hunting for gold on Earth? 1

Details: Category: Tungsten Information; Published on Monday, 27 October 2014 13:46; Written by Sherry; Hits: 540

The Earth has become the battleground for extra-terrestrials to further their own political agenda for the future of the planet, a researcher has claimed. In South Africa’s first UFO science and consciousness conference held recently in Johannesburg, the organiser said that the royal political bloodline was a small group of families whose origins could be traced to the first of mankind and who were inevitably in contact with the aliens.

“There’s a battle for Earth by some interesting dark forces,” News24 quoted Michael Tellinger, the organiser as saying.
“All the governments in the world are puppets and instruments to implement the will of a small group of individuals. The royal political bloodline goes back thousand of years,” he said.

According to Tellinger, the South African government was one of the most important puppets of these extra-terrestrials because the country was rich in gold and diamonds.

tungsten-alloy-fake-gold-rod

Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
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Tungsten Carbide Gear Hob Introduction

Details: Category: Tungsten Information; Published on Monday, 27 October 2014 18:45; Written by xjq; Hits: 547

Tungsten carbide gear hob is worm-shaped and is the equivalent of a helical gear with few teeth and large helix angle. It performs gear cutting according to the principle of spiral gear meshing through generating method. Tungsten carbide gear hob is the equivalent of a small gear, while the gear being cut is that of a big gear. Gear hob is a spiral gear with large β0 helix angle and only a few long teeth (about 1～3 teeth), making it look like a worm with very small γz lead angle. In order to form a blade, a few chip pocket are milled along the axis on the end face of worm to form the rake face and the tool orthogonal rake, and the tool orthogonal clearance and the flank surface are formed through form-relieved tooth and relief grinding.

Tungsten carbide gear hob can be classified into several types according to its working property: finish hob, rough hob, pre-shaving hob, pre-scraping cutter, pre-grinding hob, involute hob, synchronous belt wheel hob, spline hob and so on. It also can be classified into several types according to its structure: solid hob, welded hob, fabricated hob, and so on.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com

Tel.: 86 592 5129696; Fax: 86 592 5129797

Email: sales@chinatungsten.com

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Tungsten Carbide Brazed Cutting Tools

Details: Category: Tungsten Information; Published on Friday, 24 October 2014 17:55; Written by xjq; Hits: 572

In the tool industry, brazing fastens hard metals -- including tungsten carbides -- to the tips of tools such as saw blades. Cutting tools are often made with tungsten carbide because of its hardness, a desirable quality for cutting tools so they don't wear out and dull too quickly. A variety of tungsten carbide cutting tools on the market are used to sculpt super-alloy components in aircraft engines, cast-iron engine blocks, steel axles, gears and bearings, as well as tungsten carbide saws and drills.

Tungsten carbide Saw Blades

Tungsten carbide saw blades can be used to cut almost all home building materials. They're used to cut stainless steel, wood, particle board, ferrous and non-ferrous metals, laminates and fiber cement board.

Oscillating Blades

Because of the repetitive nature of the oscillating motion, oscillating blades can be tungsten carbide-tipped to prevent the blade from dulling out quickly. Tungsten carbide-tipped oscillating blades are most often used to shave down grout and plaster.

Tungsten Carbide Burs

Welders use carbide burs to grind back and cut into welds. They are manufactured in almost every shank and size you can imagine, from ball-shaped to cone-shaped to the inverted cone.