hard rock tungsten carbidedrill bit, hard rock drill bit

Our  tungsten carbide percussion drill bit have good wear-resistant, can  be grinded time after time, and have a longer service life.

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Q:What is cemented carbide ? What is cemented carbide ?

A: Cemented carbide is a hard material used in machining tough materials such as carbon steel or stainless, 

as well as in situations where other tools would wear away, such as high-quantity production runs. 

Most of the time, carbide will leave a better finish on the part, and allow faster machining. Carbide tools can 

also withstand higher temperatures than standard high speed steel tools.

Q: what your  carbide drill bit button feature and what the application?

A:

Products feature of tungsten carbide percussion drill bit :  

using the special process formula, our carbide drill bit button can meet requirement of variety of sandstone rock. Teeth are strong in the mining process, and the service life is very long.

Application of tungsten carbide percussion drill bit :

cemented carbide coring drill bit is using in geological exploration industry and drill alloy for drilling machine.

Q:what the grades and what the differents between each about tungsten carbide percussion drill bit ?

A:

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Q:What are the key properties of cemented carbides I should be concerned with when selecting 

a grade for my application?

A: The key properties of cemented carbides that define their performance level for different applications include 

abrasion resistance (directly related to the hardness of the grade), fracture strength, and fracture toughness. 

In general, the abrasion resistance or hardness of any grade is inversely proportional to its fracture toughness. 

Very often grade selection involves finding the best compromise between abrasion resistance and toughness.

 In some instances strength and corrosion resistance can be important factors in the grade selection process.

Q: Which properties are important in metal cutting applications?

A: Depending upon the type of metalcutting operation (turning, milling, drilling, etc.), different combinations of 

properties is needed in order to obtain optimum results. For example, in turning and drilling applications the 

cutting tool is in continuous contact with the workpiece. Hence, for these applications, abrasion resistance and 

strength are the most important properties to consider. However, in operations such as milling, which invariably 

involve interrupted cutting, and hence high impact forces, toughness can be an important factor. 

Grades employed for metalcutting applications are usually based on fine to medium hard phase grain sizes

 (0.5 to 1.5 mm) and low to medium Co contents (6 to 15 wt.%).

Q: Which grades are useful in metal forming applications?

A: In contrast to metalcutting (where abrasion resistance and strength are of paramount importance), 

cemented carbides used in metalforming applications will invariably be subject to high impact and shock forces. 

Hence, grades used for metalforming applications must possess high toughness levels with adequate abrasion

resistance and strength. Grades employed for metalforming applications are typically based on coarse 

grain sizes (3 to 8 mm) and high binder contents (15 to 30 wt. %).

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Q: Which grades are useful in earth drilling or boring applications?

A: In many respects the characteristics of the grades employed for earth drilling and boring represent a 

compromise between the characteristics that are important for metalcutting and those that are important 

for metalforming applications. Grades for earth drilling and boring must possess the highest toughness 

levels for any given abrasion resistance level, while simultaneously possessing adequate strength levels. 

The best compromise is usually arrived at by using grades that are based on coarse grain sizes (3 to 8 mm) 

and relatively low Co levels (6 to 16 wt. %).

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Zhuzhou Jingzuan Carbide Co., Ltd, which is committed to R&D, producing and sale the GB A Class high-grade cemented carbide series products, is the only one modern high-tech enterprise in China.

GB A Class high-grade cemented carbide has 3 technical features: raw material is the original raw material of high purity tungsten carbide powder, foundation is the high-precision technology equipment and indemnification is the strict 7 degree quality inspection system.

These features make our cemented carbide products superior than other products so that our company has been choosing by Xiangtan Iron and Steel Co., Ltd. (XISC), SANY Heavy Industry Co., Ltd., Weichai Power Co., Ltd., CSR Co., Ltd., Anhui Military Industry Group Holding Co., Ltd. and other companies as their quality suppliers.

Our products are exported to Southeast Asia and the Americas and enjoy a high popularity in those markets.

for more information about tungsten carbide percussion drill bit contact:

Sales: Ms.Bigel Wu
Skype: haocarbide
Tel: 86 731 22031856
Mob: 86 15273315755
Email: bigel(at)