stansard diamond core drill bit,diamond drill bit - all

Impregnated Bit Sharpening Technique

Where the matrix type and waterway configuration have been correctly selected for a drilling job, an impregnated core bit should drill steadily with an even wear pattern until the matrix layer is totally consumed. At this point, the circulating pump pressure will usually increased due to the fluid restriction caused by the diminished waterway depth on the bit face.

Influence Factors of Drilling Pressure for the diamond core bit

The following factors should be considered when choosing the drilling pressure.

a Rock Properties:

The smaller drilling pressure should be used in soft to medium soft formations,The Drilling pressure should be increased properly in complete,medium hard and hard formations.In broken,cracked and mixed formation,the drilling pressure should be reduced properly according to cracking level of the formations.

b Bit type:

Greater drilling pressure can be adopted for the bits which have big diameter,thick wall and soft matrix. The bits with small diameter, thin wall and hard matrix, the drilling pressure should be smaller.The drilling pressure for surface set core bit should be higher than impregnated core bit,in order to make the diamonds on surface set core bit to drill into rock and cause its brokenness.

c Diamond Quality,Diamond Quantity,Diamond Size:

Drilling pressure should be bigger when diamond quality is good,quantity is big and the grain size is large; one the contrary,smaller drilling pressure should be adopted when the diamonds are with poor quality, small quantity and small grain size.The total drilling pressure on the bits which are with large-sized but fewer diamonds should be lower than the one on the bits which are with small-sized but more diamonds.

d Cut Area of the Rock :

The cut area of the rock depends on the bit diameter,wall thickness and waterway quantities.The larger are the coring area,the bigger the drilling pressure.Conversely,the drilling pressure should be lower.

Size Available:

"Q" series:AQ,BQ,NQ,HQ,PQ/AQTK,BQTK,BQ3,NQ2,NQ3,NQTT,HQ3,HQTT,PQ3,PQTT
T2 series: T2 46,T2 56,T2 66,T2 76,T2 86,T2 101
T6 series: T6 76,T6 86,T6 101,T6 116,T6 131,T6 146, T6S 101,T6S 116
T series: T36,T46,T56,T66,T76,T86
Z series: Z46,Z56,Z66,Z76,Z86,Z101,Z116,Z131,Z146
B series: B36,B46,B56,B66,B76,B86,B101,B116,B131,B146
WF series: HWF,PWF,SWF,UWF,ZWF
WT series: RWT,EWT,AWT,BWT,NWT,HWT
WM series: EWM,AWM,BWM,NWM,HWM
WG series: EWG,AWG,BWG,NWG,HWG
Others: NMLC,HMLC,LTK48,LTK60,BGM,NGM,ADBG,TBW,TNW,
ATW,BTW,NTW,NXD3,AX,NX,NXC,AXT,T6H,4 9/16,NWD4,412F,SK6L146,
TT46,TB56,TS116,CHD10