Flexible Adjustment Precise Hole Diameter Control Diamond T2 86 Reamer

• Type: Core Drill
• Usage: Coring
• Certification: CE, ISO
• Application: Reaming
• Industry: Geological Survey
• Payment Term: Tt or LC
• Model NO.: T256,T266,T276,T286,T2101,T676,T686,T6101,T6116,T6
• Product Name: Reaming Shell/Reamer
• Thread Type: Pi, Metric, Dcdma etc.
• Surface Finish: Smooth
• Material: Diamond
• Coating: Natural Diamond or Man-Made Diamond
• Heat Resistance: High
• Cutting Edge: Sharp
• Transport Package: Nude/Wooden Case/Carten
• Specification: PQNQHQNTWHTWNQ3HQ3
• Trademark: BEST
• Origin: China
• HS Code: 82071910
• Production Capacity: 500000 Pieces/Year

Product Description

Product Description:

When using a diamond reamer (reaming shell) in the drilling industry, you may encounter several problems. Here are some common issues and potential solutions:

1. Premature diamond wear: Diamond reamers are designed for their exceptional hardness and wear resistance. However, certain factors can lead to premature diamond wear, such as abrasive formations, high drilling speeds, excessive weight on bit, or inadequate cooling. To address this problem, you can:

   • Optimize the drilling parameters: Adjust the drilling speed, weight on bit, and cooling fluid flow rate to ensure they are within the recommended ranges for the specific diamond reamer and formation you are working with.
   • Use appropriate diamond grit size: Select a diamond reamer with a grit size suitable for the formation's abrasiveness. Finer grits are generally better for softer formations, while coarser grits are more suitable for harder formations.
   • Consider advanced diamond coatings: Explore diamond reamers with advanced coatings or treatments that enhance their wear resistance, such as polycrystalline diamond compact (PDC) coatings.

2. Heat accumulation: During drilling, heat can accumulate due to friction between the diamond reamer and the formation. Excessive heat can degrade the diamonds and reduce drilling efficiency. To mitigate heat accumulation:

   • Use adequate cooling and lubrication: Ensure a continuous flow of drilling fluid or mud to cool the diamond reamer and carry away the heat generated during drilling.
   • Optimize drilling parameters: Adjust the drilling parameters, such as speed and weight on bit, to prevent excessive heat buildup. Slowing down the drilling speed or reducing the weight on bit can help dissipate heat more effectively.

3. Clogging or blockage: The reaming action can cause cuttings or formation debris to accumulate in the reaming shell, leading to clogging or blockage. This can result in reduced drilling efficiency or even complete tool failure. To address this issue:

   • Optimize drilling fluid properties: Ensure the drilling fluid has appropriate viscosity, density, and filtration properties to carry away the cuttings effectively.
   • Implement proper cleaning mechanisms: Depending on the drilling setup, consider using back-reaming or circulation techniques to remove the accumulated cuttings and debris from the reaming shell.

4. Mechanical damage or failure: Diamond reamers can experience mechanical damage or failure due to factors like excessive torque, impact loading, or fatigue. To prevent mechanical issues:

   • Use compatible drill string components: Ensure that the diamond reamer is compatible with other components in the drill string, such as the drill bit and stabilizers, to avoid excessive torque or misalignment.
   • Monitor drilling parameters: Continuously monitor drilling parameters, such as torque and weight on bit, to detect any abnormal behavior that could lead to mechanical stress on the reaming shell.
   • Conduct regular inspections: Inspect the diamond reamer periodically for signs of wear, damage, or fatigue. Replace or repair the reamer as necessary to prevent catastrophic failure.

Remember, specific drilling conditions and formations can vary, so it's essential to consult with manufacturers, industry experts, or your company's engineering team for tailored recommendations and solutions based on your specific application.
 

Model or type:
 

Specifications

ITEM	DIAMOND BIT					Reaming shell
"Q" Series Wireline assembly	Size	Bit Outer Diameter		Bit Inner Diameter
		mm	inch	mm	inch	mm	inch
	AQ	47.60	1.88	26.97	1.06	48.00	1.89
	BQ	59.50	2.35	36.40	1.43	59.90	2.36
	NQ	75.30	2.97	47.60	1.88	75.70	2.98
	HQ	95.58	3.77	63.50	2.50	96.00	3.78
	PQ	122.00	4.80	84.96	3.35	122.60	4.83
Metric T2 Series	36	36.0	1.417	22.0	0.866	36.3	1.429
	46	46.0	1.811	32.0	1.260	46.3	1.823
	56	56.0	2.205	42.0	1.654	56.3	2.217
	66	66.0	2.598	52.0	2.047	66.3	2.610
	76	76.0	2.992	62.0	2.441	76.3	3.004
	86	86.0	3.386	72.0	2.835	86.3	3.398
	101	101.0	3.976	84.0	3.307	101.3	3.988
T Series	TAW	47.6	1.875	23.2	1.31	48.0	1.89
	TBW	59.5	2.345	44.9	1.77	59.9	2.36
	TNW	75.3	2.965	60.5	2.38	75.7	2.98

Reaming classification
T series	T36,T46,T56,T66,T76,T86
Cable series	AWL,BWL,NWL,HWL,PWL(Front end,rear end)
WT series	RWT,EWT,AWT,BWT,NWT,HWT(single tube/double tube)
T2/T series	T256,T266,T276,T286,T2101,T676,T686,T6101,T6116,T6131,T6146,T6H
WF series	HWF,PWF,SWF,UWF,ZWF
WG series	EWG,AWG,BWG,NWG,HWG(single tube/double tube
WM series	EWM,AWM,BWM,NWM
Others	NMLC,HMLC,LTK48,LTK60,TBW,TNW,ATW,BTW,NTW,AQTK NXD3,NXC,T6H,SK6L146,TT46,TB56,TS116,CHD101

 

Q&A:
 

1,Can used reamers be resharpened or do they need full replacement?
If cutting structure wear is within accepted tolerances, on-site dressing or factory sharpening extends life. But once steel is exposed more than half the face area or structure integrity is compromised, full replacement is necessary for reliable performance.
2,Do multi-step or back-reaming procedures help extend cone life?
Yes - using successive stepped reamers allows lighter, cheaper cutters to open the bore before pulling back larger bodied reamers for the final excavation, minimizing wear on costly heavy tools meant for full diameter cutting in the hardest formations.
3,Are extended multi-head reamers better for steady penetration rates?
Yes, for uniform geology. A common practice in tunnels involves ganging multiple single head reamers together to present a much wider cutting face. This steadier excavation allows constant muck removal without downtime between reamer changes.
4,Do different rock drilling techniques like RIH help reaming performance?
Yes, rotating-in-hole (RIH) coring and reaming methods provide consistent comminution of the rock mass without lengthy extraction cycles during reamer changes. The rock breaks down more like a conventional excavator maintains steady production.
5,Can PDC, TCI or hybrid reamers provide advantages over full diamonds?
Different applications favor one technology. PDC's suit tight hard rock. TCI's excel in fractured rock. Hybrids combine strengths. Factors like cost, downtime, bit changes and rock properties determine optimal solution between these cutting structures.
 

 

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