Cemented carbide for Coal Drilling

Product Description

Cemented carbide coal drilling tools are widely used in coal mining and drilling operations as key cutting components. Made from high-hardness cemented carbide materials, these tools are designed to work under harsh conditions such as high pressure, strong abrasion, and continuous impact.

The main advantage of cemented carbide coal drilling lies in its ability to “overcome hardness with hardness.” Compared with traditional steel drilling tools, cemented carbide offers much better wear resistance and a longer service life, helping reduce tool replacement frequency, improve drilling efficiency, and lower overall operating costs. Rather than being simple disposable consumables, cemented carbide coal drilling tools have become high-performance, long-lasting components in modern mining systems. They play an important role in improving productivity and supporting efficient, stable, and intelligent mining operations.

By choosing our cemented carbide coal drilling tools, you are not just purchasing a consumable part, but selecting a reliable “pioneer” for your mining operations. With advanced material technology and precise manufacturing processes, we are committed to delivering:

• Faster tunnelling speeds
• Lower cost per tonne of coal
• Extended equipment uptime
• Comprehensive technical support and customised solutions

Features of Cemented carbide for Coal Drilling

Specification

mm
Type	Dimension				Application
	B	H	h1	b
M1112	12.0	18.0	15.8	3.0	For making rotary drill bits used to drill coal and soft rock formation
M1113	13.4	26.0	23.8	3.0

mm
Type	Dimension						Application
	B	H	S	R	α	β
M1216	16.0	22.0	7.0	6.0	15°	1.0	Used as teeth of the equipmnet for cavation
M1220	20.0	27.0	8.0	7.0	15°	1.0
M1222	22.0	22.0	7.5	9.0	10°	1.5
M1230	30.0	35.0	12.0	8.0	8°	1.0

mm
Type	Dimension				Application
	B	H	S	α
M1306	6.0	5.0	1.4	130°	Used for rotary drill bots and as the teeth pf the equipment for cavation.
M1311	11.0	9.0	2.0	130°
M1313	13.0	10.0	2.5	130°
M1315	15.0	10.0	2.5	130°
M1317	17.0	13.0	3.0	130°
M1319	19.0	13.0	3.0	130°
M1322	22.0	15.0	3.5	130°
M1326	26.0	18.0	4.5	130°
M1333	33.0	22.0	3.0	130°
M1345	45.0	27.0	9.0	130°

mm
Type	Dimension						Application
	B	H	S	b	α1	α
M1427R	27.5	22.0	4.5	10.0	30°	35°	Used as teeth of the equipment for cavation.
M1427L	27.5	22.0	4.5	10.0	35°	30°
M1445R	45.0	21.0	9.0	15.0	31°	17°
M1445L	45.0	21.0	9.0	15.0	17°	31°

mm
Type	Dimension					Application
	D	H	r	α	E
M2009	9.0	16.0	1.0	90°	1.0	Used as teeth of the equipment for cavation
M2012A	12.0	18.0	1.5	82°	1.0
M2012B	12.0	20.0	1.5	82°	1.5
M2018	18.0	32.0	1.5	82°	2.0

mm
Type	Dimension							Application
	D	H	R	α1	α2	E	β
M2110A	10.0	18.0	8.0	53°	53°	1.0	30°	Used as teeth of the equipment for cavation and single corn bits.
M2110B	10.0	20.0	5.5	50°	58°	1.0	45°
M2112A	12.0	20.0	6.5	32°	40°	1.0	45°
M2112B	12.5	25.0	10.0	46°	46°	1.0	30°
M2115	15.0	22.0	11.0	45°	45°	2.5	30°
M2118	18.0	20.0	14.4	37°	37°	1.5	45°

mm
Type	Dimension					Application
	D	H	h1	R	r
M2417A	17.0	26.5	12.0	26.0	1.75	Used as teeth of the equipment for cavation
M2417B	17.0	29.5	15.0	26.0	1.75
Note:Value h is only for reference,not for checking

Technical Requirements

1. The carbide grade, physical and mechanical properties, and metallographical structure of products as per the relevant standards.
2. The dimensions of carbide products used for coal drilling should be in conformity with this standard.
3. The tolerance of the dimensions of carbide products used for coal drilling should be in conformity with the following.
   a.The tolerance of the width, height, thickness,s and e of carbide products should be in conformity with Table 1.

Table1                                                                                                                                                                          mm
Dimension					Tolerance
					Common class				Supior class
＜3					±0.20				±0.15
≥3~8					±0.30				±0.20
＞8~12					±0.35				±0.25
＞12~18					±0.50				±0.30
＞18~25					±0.50				±0.35
＞25~35					±0.50				±0.45
＞35~50					±1.00				±0.60

Table 2                                                                                                                                                                         mm
Dimension					Tolerance
					Common class				Supior class
＞8~12					±0.30				±0.25
＞12~18					±0.40				±0.30

b.The linearity of non-supporting face should be in conformity with the follows.
b.The lineraity of supporting face shoulde be not larger than 0.1mm; and M10 and M11, not larger than 0.15mm.

Typcial Applications

Upstream Oil and Gas Exploration:

In wellhead equipment, Christmas trees, high-pressure water injection systems and fracturing systems, valves must be able to withstand high pressures and be resistant to media containing large quantities of hard particles, such as formation sand and rock debris. Tungsten carbide stems and seats can withstand this extreme abrasive wear effortlessly, ensuring that critical valves maintain tight seals, even when they are subject to frequent cycling, to prevent wellhead blowouts.

Demanding Conditions in Refining and Chemical Processes:

Valves in refinery hydrocracking and catalytic cracking units, as well as in the reaction feed lines and high-temperature, high-pressure separation units of chemical plants, face multiple challenges, including extreme temperatures and pressures, as well as corrosion from hydrogen, sulphur and acids. The exceptional corrosion resistance and high-temperature stability of tungsten carbide make it the preferred material for shut-off and control valves in these critical pipelines.

Black Water and Ash Water Treatment in Coal Chemicals and Gasification:

Black and grey water generated by coal gasification units is characterised by high temperatures and pressures, and contains large quantities of extremely fine ash particles. This makes the water highly abrasive, earning it the nickname ‘liquid sandpaper’. Under these conditions, conventional valves can suffer severe wear and failure within days or weeks. The only reliable solution to ensure the continuous, stable operation of these systems for months or longer is slurry-proof valves, pressure-reducing valves and circulation valves equipped with tungsten carbide seats and stems.

Core Protection for Multistage Centrifugal Pumps — Minimum Flow Valves:

To prevent cavitation damage in high-pressure multistage centrifugal pumps (e.g. boiler feedwater pumps) during low-flow operation, minimum flow valves frequently throttle and shut off fluids with extremely high velocity under high pressure differentials. This is widely recognised within the valve industry as one of the most extreme wear conditions. Tungsten carbide seats and stems are virtually the standard solution for withstanding the destructive effects of the combined high pressure differentials, high flow velocities and cavitation erosion.