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Tungsten Carbide Ball for Pen Making

Category: Tungsten Information
Published on 13 October 2014
Hits: 578
Grinding is usually adopted in the production of gel pen nib using tungsten carbide ball, after which we can get a pen nib with smooth surface and high precision. 
 
Conic grinding is generally adopted in the machining process. First, spread blank balls in the counterdie of conic groove, put grinding flat on the top of blank balls, and exert a certain pressure to it, and then remove the rough edges of blank balls through parallel translation of the flat. Through this processing method, the surface roughness of blank balls will be less than 0.02μm, while roundness error less than 0.001mm. The tungsten carbide ball produced in this way can be well used with a variety of inks, and ensure good abrasion resistance, smooth writing, clear writing. In addition, it is also water-tolerant and sun-proof, and has long storage time.
 
 
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Tungsten Carbide Ball for Rolling Bearings

Category: Tungsten Information
Published on 13 October 2014
Hits: 614
Rolling bearing tungsten carbide ball is a kind of metal ball embedded into rolling bearing. It has extremely wide applications in bearing. Tungsten carbide ball’s high hardness, abrasion resistance, impact resistance and precision can greatly reduce the abrasion of tungsten carbide ball in bearing performance, and thus extend the service life of bearings. 
 
Standard JB / T 9145-2010 of machinery industry has clearly stipulated the size, technical requirements, measurement and testing methods, inspection rules, marks, rust-proof packaging and storage of the tungsten carbide ball. Its manufacture and installation had better to be conducted in accordance with the standards so that inspection and replacement can be well performed.
 
 
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Tungsten Carbide Ball Grinding Technology

Category: Tungsten Information
Published on 13 October 2014
Hits: 570
The methods adopted in tungsten carbide ball grinding mainly include: V-shaped groove grinding, conical grinding, spin rotation control grinding, dual rotation grinding disc grinding, magnetic suspension grinding, and so on.
 
When processing tungsten carbide balls, there exits many problems due to its high hardness, which include: low surface energy, grinding media, poor adhesion properties of grinding medium, and so on. These problems will affect processing efficiency, surface roughness, machining accuracy, and so on. Therefore, the key processing technologies and difficulties lie in: 
1. Increasing adhesion properties of grinding medium to the tungsten carbide ball surface. Grinding mediums include abradant and grinding lubricant. Abradant can be used in the cutting of tungsten carbide surface, while grinding lubricant helps abradant well adhere to the tungsten carbide ball surface and thus ensure uniformity and effectiveness of abradant cutting. 
2. Improving the rotation performance of tungsten carbide ball. By changing the angle and shape of grinding plate groove and rotation speed of grinding plate, the rotation performance of tungsten carbide balls can then be adjusted. 
3. Optimization of batch processing parameters. The grinding technology parameters include the speed of grinding plate, pressure, groove shape, etc. 
After solving these key technologies problems, the surface roughness, machining precision and processing efficiency of tungsten carbide ball grinding can be ensured.
 
 
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Tungsten Carbide Ball Production Process

Category: Tungsten Information
Published on 13 October 2014
Hits: 531
Sintered carbide ball is a kind of sintered metal product made through pressing and sintering; its production process is similar to other tungsten carbide products. 
 
Its main production process is as follows: milling → giving formula according to difference → wet-grinding → mixing → smashing → drying → sieving → adding forming binder →drying again → gaining compound after sieving → granulation →isostatic pressing → forming → sintering → molding (blank). 
 
After getting blank balls, surface finishing should be conducted according to specific needs, mainly adopting methods of grinding and polishing, after which the surface will attain high precision and achieve mirror brightness.
 
 
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Tungsten Carbide Ball Production Process

Category: Tungsten Information
Published on 13 October 2014
Hits: 542
Sintered carbide ball is a kind of sintered metal product made through pressing and sintering; its production process is similar to other tungsten carbide products. 
 
Its main production process is as follows: milling → giving formula according to difference → wet-grinding → mixing → smashing → drying → sieving → adding forming binder →drying again → gaining compound after sieving → granulation →isostatic pressing → forming → sintering → molding (blank). 
 
After getting blank balls, surface finishing should be conducted according to specific needs, mainly adopting methods of grinding and polishing, after which the surface will attain high precision and achieve mirror brightness.
 
 
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Tel.: 86 592 5129696; Fax: 86 592 5129797
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Tungsten Carbide Ball

Category: Tungsten Information
Published on 13 October 2014
Hits: 580
Tungsten carbide ball is commonly known as solid carbide ball, the major component of which is the tungsten carbide (WC, TiC) micron-size powders of refractory metal with high hardness. It is a kind of sintered metal product produced by adopting cobalt (Co), nickel (Ni) and molybdenum (Mo) as binders, being sintered in a vacuum furnace or a hydrogen reduction furnace, using automatic extruder to obtain blank ball, and then polishing and grinding its surface. 
 
Tungsten carbide ball has high hardness, abrasion resistance, corrosion resistance and flex resistance and can replace all kinds of steel balls products. 
 
Common grades of tungsten carbide balls mainly include: YG6, YG6X, YG8, YG13, YG20, YN6, YN9, YN12, YT5, YT15, and so on. 
 
Tungsten carbide balls have wide application range, such as: precision bearings, instruments, pens, spraying machines, pumps, machinery parts, sealing valve, brake pump, squeeze hole punch, oil, hydrochloric acid laboratory, hardness measuring instrument, fishing gear, weight, decoration, finishing, and other industries.
 
 
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Tungsten Carbide Dry Cutting Hob Introduction

Category: Tungsten Information
Published on 11 October 2014
Hits: 616

Tungsten carbide dry cutting hob is a kind of high-speed and environmental friendly numerical control gear hobbing technology. It can conduct efficient and high-speed primary or secondary cutting machining towards gear blank of quenched steel and carburizing steel materials

Materials of current gear cutting tools can be divided into four categories: tungsten carbide, ceramics, powder metallurgy high-speed steel and high-speed steel with high performance. Ceramic material is used in this field for a long time, but it is seldom used to produce complicated hobs while tungsten carbide material is more commonly used. China's current production of powder metallurgy high-speed steel and high-speed steel with high performance is still rare, but because china is abundant in tungsten carbide resources, thus this kind of material is supposed to become the leading material type in processing high-speed dry cutting gear hobs.


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Hollow Tungsten Carbide Rod

Category: Tungsten Information
Published on 11 October 2014
Hits: 613

Hollow tungsten carbide rod is a kind of tungsten carbide rod with a large through-hole in the axial center, also known as tungsten carbide tube. Hollow tungsten carbide rod has various kinds of specifications, which include diameter 8 ~ 25mm, Canon 4 ~ 15mm and length 120 ~ 250mm. Hollow tungsten carbide rods of different specifications can be produced according to different purposes. Hollow tungsten carbide rod has rapid heat conduction speed, good abrasion resistance, high elasticity and low coefficient of thermal expansion, and thus mainly used as protective sleeve of thermocouple and thermal resistance, accessories of temperature measurement equipment, and so on.


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Tungsten Carbide Threaded Rod

Category: Tungsten Information
Published on 11 October 2014
Hits: 662

Tungsten carbide threaded rod has high hardness, and generally, can be formed directly.
Tungsten carbide threaded rod can be divided into two types: external thread and internal thread. External thread is relatively easier to process than internal thread. External thread can be processed by grinding. After tungsten carbide rods being formed in shape, the external thread can be molded and then be grinded and processed to achieve a series of size requirements. Internal thread can be processed through electrosparking, and after tungsten carbide rods take shape, cavity can be formed. After that, unipolar electrospark is used to process internal thread.

To process threads on tungsten carbide rods will take up a lot of time and cost, so if there is no special purpose, it is generally not recommended.


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Tungsten Carbide Rod Hardness Test

Category: Tungsten Information
Published on 11 October 2014
Hits: 633

Tungsten carbide rod hardness test mainly adopts Rockwell hardness tester to test HRA hardness level. This is a kind of non-destructive test, and is relatively easy to operate. This kind of detection method has small testing force and little indentation, high measuring speed and high efficiency; therefore, it can be directly used to test finished products.

Hardness test has certain similarities with tensile test, both of which are used to test the resistance capability of metals to plastic deformation. Because tensile test is a kind of destructive test, so hardness test is adopted more frequently than tensile test.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
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