CN101353946A - Diamond core bit capable of reproducing water gap - Google Patents
Diamond core bit capable of reproducing water gap Download PDFInfo
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- CN101353946A CN101353946A CNA2008100511529A CN200810051152A CN101353946A CN 101353946 A CN101353946 A CN 101353946A CN A2008100511529 A CNA2008100511529 A CN A2008100511529A CN 200810051152 A CN200810051152 A CN 200810051152A CN 101353946 A CN101353946 A CN 101353946A
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Abstract
The invention relates to an impregnated diamond core bit, in particular to a bit with a reproducible drill bit water gap which is composed of an initial work water gap and a hidden water gap; with the abrasion of the working layer of a drill bit, the height of the initial work water gap is reduced to zero, and the hidden water gap is exposed to be a new work water gap. The bit of the invention overcomes the problem that the work matrix of the existing impregnated diamond core bit can not be designed into a high work matrix due to the limitation of the height of the water gap, therefore, the service life of the bit are multiplied; experiments show that after the abrasion of the initial work water gap is finished, a first layer of the filling materials of the hidden water gap falls off to generate the new work water gap; after the abrasion of the first layer of the hidden water gap is finished, a second layer of the hidden water gap appears automatically to form the new work water gap; the course continues until the abrasion of all the hidden water gaps is finished. Due to the adoption of the reproducible water gap of the diamond drill bit, the height of the matrix is greatly increased, and the service life of the bit is multiplied, thereby achieving the purpose of drilling a hole totally with only one drill bit and greatly improving the work efficiency.
Description
Technical field
The present invention relates to a kind of drilling tools, be applicable to the impregnated with diamond coring bit of the different-diameter that creeps into all kinds rock, especially the drill bit mouth of a river is renewable.
Background technology
The impregnated with diamond coring bit mouth of a river is that flushing liquor is flowed through drilling rod to the shaft bottom and return the central core of circulation in aperture, and it directly affects the effect of flushing drill bit and cooling drill bit, thereby also affects the life-span and the drilling efficiency of drill bit.The gross area at the mouth of a river should be greater than between drill bit and the core or the area of the annular gap between the drill bit and the borehole wall vertically, causes that in order to avoid the cross-section of river is too little resistance to water-flow is excessive and drill bit produced big buoyancy; Mouth of a river area is also unsuitable excessive, in order to avoid make the flushing liquor flow velocity too low, has a negative impact for flushing drill bit and cooling drill bit, so mouth of a river height should not be too high, it is unimpeded that the size at the mouth of a river and quantity should be able to satisfy flushing liquor, and rock dust is got rid of well, and drill bit cools off effectively.The shape at the mouth of a river is used rectangle, trapezoidal, semicircle always, for making the front of the more close cutting element of flushing liquor, also can adopt the deflection mouth of a river.Carcass working lining height generally is lower than the height at the mouth of a river slightly, and carcass working lining mill is over, and drill bit has also just been scrapped.
At present, each drill bit producer is only in the shape at the drill bit mouth of a river with quantitatively do trickle change, improve cooling and row's vermicelli spare of drill bit by the quantity (being increased to 8 or 10 by 6) that increases the mouth of a river as Φ 75 Wire-Line Coring Diamond Bits mouth of a river quantity, and reduce the contact area of bit bottom lip surface and rock and then the specific pressure of increase drill bit, improve drilling efficiency; In order to prevent the wearing and tearing of bit bottom lip surface dish, make the peg gate into the fan-shaped mouth of a river; The tilt angle alpha (evidence α=30 ° time the best) that changes drill bit mouth of a river hypotenuse makes the specific surface minimum of landwaste, the cutting grain maximum, thus make the crushing effect of rock best; The purpose of the above-mentioned practice all is in order better to get rid of rock dust and cooling drill bit, improve the life-span of drill bit, but all can not be fundamentally life-span of drill bit be increased significantly, scan diamond bit both domestic and external, the thickness of bit matrix working lining all is subjected to the restriction of individual layer mouth of a river height.In recent years, Boart Longyear (US) of the U.S. has designed a kind of high carcass () diamond-impregnated bit Alpha Stage3 at 1 o'clock, broken the history at the diamond bit individual layer mouth of a river, three layers of mouth of a river have been designed, each three mouth of a river of layer is evenly distributed on end labial surface, mouth of a river width and highly be 8.5mm, totally nine mouths of a river, nine mouths of a river all participate in cooling effect, and place, the external diameter mouth of a river respectively has a semicircle tank to connect whole bit matrix in drill bit; Evidence is crept in firm hard formation, and the life-span of this kind drill bit is three times of common drill bit.But this three layers of high matrix drill bits in the mouth of a river, when creeping into competent bed the life-span also have only 100 surplus rice, though the life-span, more common drill bit improved, but can not accomplish the degree of depth requirement that comes designing bits carcass height, and partial flushing liquid can cause the drill bit cooling not enough from the leakage of the mouth of a river, upper strata according to boring; After whenever grinding off one deck mouth of a river, the whole cooling effect of drill bit and take the powder ability and can reduce than green bit; When only remaining three mouths of a river of last one deck, the gross area at the mouth of a river only account for end labial surface area 13%, do not reach the ratio (15%～35%) that the normal drill bit mouth of a river accounts for end labial surface area far away, can cause drill bit yet, reduced the drill bit due life-span of script because of cooling off bad and little burning.Therefore, want fundamentally to improve the life-span of drill bit even accomplish that a drill bit just finishes the workload of a boring, must make the high workload matrix drill bits, accomplish to come the height of designing bits work carcass according to the degree of depth of boring, want to reach this purpose, must resolve the problem at the drill bit mouth of a river.
Summary of the invention
Purpose of the present invention just is at above-mentioned the deficiencies in the prior art, overcoming existing impregnated with diamond coring bit carcass is subjected to mouth of a river height restriction and can not designs high carcass, influence the problem in the application life of drill bit, a kind of impregnated with diamond coring bit of the renewable mouth of a river is provided.
The objective of the invention is to realize in the following manner:
The impregnated with diamond coring bit at the renewable mouth of a river is provided with the above mouth of a river 2 that hides of one deck initialization mouth of a river 1 and one deck, hides the mouth of a river 2 continuous exposures with the wearing and tearing of carcass 3 and produces.The area at each layer mouth of a river accounts for 16%～35% of labial surface at the bottom of the carcass, designs the mouth of a river of varying number according to the bit diameter size in one deck, each mouth of a river width 4-10mm, and height 3-8mm, and evenly distribute.Adjacent two layers mouth of a river interaction sequences on vertical plane is arranged, and the angle of dislocation is half of the adjacent mouth of a river of layer, the same mouth of a river and center of circle angulation, and promptly the hiding mouth of a river 2 of each layer is positioned at the centre at the two adjacent two-layer mouths of a river up and down.For example: the 3rd layer of hiding mouth of a river 2 be positioned at the initialization mouth of a river 1 directly over.
The manufacture method of the diamond core bit at the renewable mouth of a river comprises following order and step:
A, account for the percentage design mouth of a river number and the mouth of a river size of labial surface at the bottom of the carcass, by the measure-alike graphite block in the mouth of a river size preparation of design and the initialization mouth of a river 1 and the hiding mouth of a river 2 according to bit diameter and mouth of a river area;
B, the volumetric spaces that the designed initialization of the deduction step a mouth of a river 1 or the hiding mouth of a river 2 are occupied in the plane from the drill bit cross section prepare steel die according to mouth of a river height and remaining segment space again;
C, will contain the diamond compound again and place steel die, at 4t/cm
2Pressure under cold pressing and make the working lining carcass piece identical with mouth of a river height;
D, the initialization mouth of a river 1 graphite block is bonded on the position, the mouth of a river of the design of the bottom in the graphite jig, the working lining carcass piece of cold moudling is put between 1 graphite block of the mould initialization mouth of a river, form the first floor carcass;
The arrangement that on vertical plane, misplaces of the hiding mouth of a river 2 of e, second layer carcass and the initialization mouth of a river 1, the angle of dislocation is half of the adjacent mouth of a river of layer, the same mouth of a river and center of circle angulation, promptly be inverted trapezoidal graphite block and be fixed in the mould centre that two-phase on the first floor carcass borders on the river mouthful, be inverted and be working lining carcass piece between the trapezoidal graphite block;
The hiding mouth of a river 2 of f, the 3rd layer of carcass and the initialization mouth of a river 1 are on same vertical plane, hiding between 2 graphite blocks of the mouth of a river is working lining carcass piece, the hiding mouth of a river 2 graphite blocks of the 4th layer of carcass and the second layer are hidden the mouth of a river 2 graphite blocks on same vertical plane, the hiding mouth of a river 2 of layer 5 and the mouth of a river, the 3rd layer of Tibetan 2 graphite blocks are on same vertical plane, the hiding mouth of a river 2 graphite blocks of layer 6 and the mouth of a river, the 4th layer of Tibetan 2 graphite blocks are on same vertical plane, by that analogy, so the N layer hide the mouth of a river 2;
G, the transition zone tire material of the top dress 3-5mm of one deck working lining carcass piece and the hiding mouth of a river 2 graphite blocks in the end, and compacting;
On the h transition zone tire material is the steel body;
I is warming up to uniform temperature by the pressure sintering sintering, is pressurized to certain pressure, heat-insulation pressure keeping certain hour again, drill bit taken out to be placed on slowly cool to room temperature in the heat insulating material, process the initialization mouth of a river 1, be the diamond core bit at the renewable mouth of a river with sander.
Purpose of the present invention can also realize in the following manner:
The initialization mouth of a river 1 is the right angle rectangle, and hiding the mouth of a river 2 is that inversion is trapezoidal; The sintering temperature of pressure sintering is 900-1000 ℃, and pressure is 140-160Kgf/cm
2
Beneficial effect:
The present invention has overcome existing impregnated with diamond coring bit work carcass and has been subjected to mouth of a river height restriction and can not designs high carcass problem, has significantly improved the application life of drill bit; Through test, after had ground at the initial mouth of a river, first floor was hidden mouth of a river filler and is come off automatically, produces the new work mouth of a river, and after had ground at the hiding mouth of a river of first floor, the second layer was hidden the automatic exposure in the mouth of a river, forms the new work mouth of a river again, has ground until all hiding mouths of a river.
Description of drawings
Accompanying drawing 1 is the impregnated with diamond coring bit structure chart at the renewable mouth of a river of one deck
Accompanying drawing 2 is the impregnated with diamond coring bit structure chart at two layers of renewable mouth of a river
Accompanying drawing 3 is the impregnated with diamond coring bit structure chart at three layers of renewable mouth of a river
Accompanying drawing 4 is the impregnated with diamond coring bit structure chart at four layers of renewable mouth of a river
Accompanying drawing 5 is the impregnated with diamond coring bit structure chart at five layers of renewable mouth of a river
The 1 initialization mouth of a river, 2 hide the mouth of a river, 3 work body piles, 4 steel bodies.
A, sectional view, B, vertical view, C, design sketch.
The specific embodiment
Be described in further detail below in conjunction with drawings and Examples:
The impregnated with diamond coring bit at the renewable mouth of a river is provided with the above mouth of a river 2 that hides of one deck initialization mouth of a river 1 and one deck, hides the mouth of a river 2 continuous exposures with the wearing and tearing of carcass 3 and produces.The area at each layer mouth of a river accounts for 16%～35% of labial surface at the bottom of the carcass, designs the mouth of a river of varying number according to the bit diameter size in one deck, each mouth of a river width 4-10mm, and height 3-8mm, and evenly distribute.Adjacent two layers mouth of a river interaction sequences on vertical plane is arranged, and the angle of dislocation is half of the adjacent mouth of a river of layer, the same mouth of a river and center of circle angulation, and promptly 22.5 °-45 °, the hiding mouth of a river 2 of each layer is positioned at the centre at the two adjacent two-layer mouths of a river up and down.For example: the 3rd layer of hiding mouth of a river 2 be positioned at the initialization mouth of a river 1 directly over.
The manufacture method of the diamond core bit at the renewable mouth of a river comprises following order and step:
A, account for the percentage design mouth of a river number and the mouth of a river size of labial surface at the bottom of the carcass, by the measure-alike graphite block in the mouth of a river size preparation of design and the initialization mouth of a river 1 and the hiding mouth of a river 2 according to bit diameter and mouth of a river area;
B, the volumetric spaces that the designed initialization of the deduction step a mouth of a river 1 or the hiding mouth of a river 2 are occupied in the plane from the drill bit cross section prepare steel die according to mouth of a river height and remaining segment space again;
C, will contain the diamond compound again and place steel die, at 4t/cm
2Pressure under cold pressing and make the working lining carcass piece identical with mouth of a river height;
D, the initialization mouth of a river 1 graphite block is bonded on the position, the mouth of a river of the design of the bottom in the graphite jig, the working lining carcass piece of cold moudling is put between 1 graphite block of the mould initialization mouth of a river, form the first floor carcass;
The arrangement that on vertical plane, misplaces of the hiding mouth of a river 2 of e, second layer carcass and the initialization mouth of a river 1, the angle of dislocation is half of the adjacent mouth of a river of layer, the same mouth of a river and center of circle angulation, promptly be inverted trapezoidal graphite block and be fixed in the mould centre that two-phase on the first floor carcass borders on the river mouthful, be inverted and be working lining carcass piece between the trapezoidal graphite block;
The hiding mouth of a river 2 of f, the 3rd layer of carcass and the initialization mouth of a river 1 are on same vertical plane, hiding between 2 graphite blocks of the mouth of a river is working lining carcass piece, the hiding mouth of a river 2 graphite blocks of the 4th layer of carcass and the second layer are hidden the mouth of a river 2 graphite blocks on same vertical plane, the hiding mouth of a river 2 of layer 5 and the mouth of a river, the 3rd layer of Tibetan 2 graphite blocks are on same vertical plane, the hiding mouth of a river 2 graphite blocks of layer 6 and the mouth of a river, the 4th layer of Tibetan 2 graphite blocks are on same vertical plane, by that analogy, so the N layer hide the mouth of a river 2;
G, the transition zone tire material of the top dress 3-5mm of one deck working lining carcass piece and the hiding mouth of a river 2 graphite blocks in the end, and compacting;
On the h transition zone tire material is the steel body;
I is warming up to uniform temperature by the pressure sintering sintering, is pressurized to certain pressure, heat-insulation pressure keeping certain hour again, drill bit taken out to be placed on slowly cool to room temperature in the heat insulating material, process the initialization mouth of a river 1, be the diamond core bit at the renewable mouth of a river with sander.
The initialization mouth of a river 1 is the right angle rectangle, hides the mouth of a river 2 for being inverted trapezoidal or right angle rectangle; The sintering temperature of pressure sintering is 900-1000 ℃, and pressure is 140-160Kgf/cm
2
Distribute because the drill bit mouth of a river is a multilayer, adopt common pressure sintering may cause the carcass material of bottom, the hiding mouth of a river well not to be compacted, thereby the bulk strength of drill bit is reduced.In order to guarantee the intensity of mouth of a river bridging place bit matrix, the drill bit working lining of at first in steel die, colding pressing (diamond mixes carcass material) moulding, pressure is not less than 4t/cm
2, the carcass piece with mouth of a river material and compression moulding is distributed in the mould by design scheme then, and the pure carcass material of inoperative layer of packing into then is by method sinter moldings such as hot pressing or pressureless impregnations.
The impregnated core diamond bit of getting that with the diameter is 75mm is an example, the renewable mouth of a river of designing bits is 1 layer, the quantity that accounts for the 16.4% design mouth of a river of labial surface at the bottom of the carcass by mouth of a river area is 8, width 4mm, the height 6mm at the initialization mouth of a river, with the module of the graphite block that is shaped, be bonded at the bottom surface of graphite jig as the work mouth of a river; With hide mouth of a river graphite block be bonded at initialization mouth of a river graphite block above, then the bit matrix material is evenly packed in the graphite jig, refill the thick transition zone of 3mm, put into the steel body after the compacting, at 900 ℃, pressure is at 140Kgf/cm
2Condition under hot-forming, be placed on and slowly cool to room temperature in the heat insulating material, process the initialization mouth of a river with sander at last, will hide mouth of a river graphite block and stay in the carcass; Also the graphite block of hiding in the mouth of a river can be taken out, fill in block tin or the copper billet of hiding mouth of a river shape, adopt the technology of secondary welding-on to make it become the hiding mouth of a river.
The impregnated core diamond bit of getting that with the diameter is 75mm is an example, and designing bits is 2 layers of renewable mouth of a river, and the quantity that accounts for 16.4% each layer of design mouth of a river of labial surface at the bottom of the carcass by mouth of a river area is 8, width 4mm, height 8mm; The initialization mouth of a river 1 graphite block is bonded on the position, the mouth of a river of the design of the bottom in the graphite jig, the working lining carcass piece of cold moudling is placed in the mould between 1 graphite block of the initialization mouth of a river, constitute the first floor carcass; The arrangement that on vertical plane, misplaces of the hiding mouth of a river 2 of second layer carcass and the initialization mouth of a river 1, the angle of dislocation is half of the adjacent mouth of a river of layer, the same mouth of a river and center of circle angulation, be the first floor position that hides the mouth of a river than the 22.5 ° of angles of having staggered, the initialization mouth of a river, be inverted trapezoidal graphite block and be fixed in the mould centre that two-phase on the first floor carcass borders on the river mouthful, be inverted and be working lining carcass piece between the trapezoidal graphite block; The thick transition zone tire material of top dress 5mm of one deck working lining carcass piece and the hiding mouth of a river 2 graphite blocks in the end, and compacting; Put into the steel body on the transition zone tire material, at 900 ℃, pressure is at 140Kgf/cm
2Condition under hot-forming, be placed on and slowly cool to room temperature in the heat insulating material, process the initialization mouth of a river with sander at last, will hide mouth of a river graphite block and stay in the carcass; Also can remove hiding place, mouth of a river graphite block, then according to the mole of the form sintering low-intensity material at the trapezoidal mouth of a river, be bumped into and hide position, the mouth of a river, make itself and mouth of a river wall that certain intensity that cooperates be arranged, just come off under the situation that is unlikely to not ground from side at the initialization mouth of a river.
The impregnated core diamond bit of getting that with the diameter is 75mm is an example, and designing bits is 3 layers of renewable mouth of a river, and the quantity that accounts for 18.5% each layer of design mouth of a river of labial surface at the bottom of the carcass by mouth of a river area is 6, width 6mm, height 7mm; The initialization mouth of a river 1 graphite block is bonded on the position, the mouth of a river of the design of the bottom in the graphite jig, the working lining carcass piece of cold moudling is placed in the mould between 1 graphite block of the initialization mouth of a river, constitute the first floor carcass; The arrangement that on vertical plane, misplaces of the hiding mouth of a river 2 of second layer carcass and the initialization mouth of a river 1, the angle of dislocation is half of the adjacent mouth of a river of layer, the same mouth of a river and center of circle angulation, be the first floor position that hides the mouth of a river than the 30 ° of angles of having staggered, the initialization mouth of a river, be inverted trapezoidal graphite block and be fixed in the mould centre that two-phase on the first floor carcass borders on the river mouthful, be inverted and be working lining carcass piece between the trapezoidal graphite block; The hiding mouth of a river 2 of the 3rd layer of carcass and the initialization mouth of a river 1 are on same vertical plane, hiding between 2 graphite blocks of the mouth of a river is working lining carcass piece, the hiding mouth of a river 2 graphite blocks of the 4th layer of carcass and the second layer are hidden the mouth of a river 2 graphite blocks on same vertical plane, the hiding mouth of a river 2 of layer 5 and the mouth of a river, the 3rd layer of Tibetan 2 graphite blocks are on same vertical plane, the hiding mouth of a river 2 graphite blocks of layer 6 and the mouth of a river, the 4th layer of Tibetan 2 graphite blocks are on same vertical plane, by that analogy, so the N layer hide the mouth of a river 2; The thick transition zone tire material of top dress 5mm of one deck working lining carcass piece and the hiding mouth of a river 2 graphite blocks in the end, and compacting; Put into the steel body on the transition zone tire material, at 950 ℃, pressure is at 145Kgf/cm
2Condition under hot-forming, be placed on and slowly cool to room temperature in the heat insulating material, process the initialization mouth of a river with sander at last, will hide mouth of a river graphite block and stay in the carcass; Also can remove hiding place, mouth of a river graphite block, then according to the mole of the form sintering low-intensity material at the trapezoidal mouth of a river, be bumped into and hide position, the mouth of a river, make itself and mouth of a river wall that certain intensity that cooperates be arranged, just come off under the situation that is unlikely to not ground from side at the initialization mouth of a river.
Embodiment 4
The impregnated core diamond bit of getting that with the diameter is 75mm is an example, and designing bits is 4 layers of renewable mouth of a river, and the quantity that accounts for 30% each layer of design mouth of a river of labial surface at the bottom of the carcass by mouth of a river area is 6, width 10mm, height 6mm; The initialization mouth of a river 1 graphite block is bonded on the position, the mouth of a river of the design of the bottom in the graphite jig, the working lining carcass piece of cold moudling is placed in the mould between 1 graphite block of the initialization mouth of a river, constitute the first floor carcass; The arrangement that on vertical plane, misplaces of the hiding mouth of a river 2 of second layer carcass and the initialization mouth of a river 1, the angle of dislocation is half of the adjacent mouth of a river of layer, the same mouth of a river and center of circle angulation, be the first floor position that hides the mouth of a river than the 30 ° of angles of having staggered, the initialization mouth of a river, be inverted trapezoidal graphite block and be fixed in the mould centre that two-phase on the first floor carcass borders on the river mouthful, be inverted and be working lining carcass piece between the trapezoidal graphite block; The hiding mouth of a river 2 of the 3rd layer of carcass and the initialization mouth of a river 1 are on same vertical plane, hiding between 2 graphite blocks of the mouth of a river is working lining carcass piece, the hiding mouth of a river 2 graphite blocks of the 4th layer of carcass and the second layer are hidden the mouth of a river 2 graphite blocks on same vertical plane, the thick transition zone tire material of top dress 3mm of one deck working lining carcass piece and the hiding mouth of a river 2 graphite blocks in the end, and compacting; Put into the steel body on the transition zone tire material, at 1000 ℃, pressure is at 150Kgf/cm
2Condition under hot-forming, be placed on and slowly cool to room temperature in the heat insulating material, process the initialization mouth of a river with sander at last, will hide mouth of a river graphite block and stay in the carcass; Also can remove hiding place, mouth of a river graphite block, then according to the mole of the form sintering low-intensity material at the trapezoidal mouth of a river, be bumped into and hide position, the mouth of a river, make itself and mouth of a river wall that certain intensity that cooperates be arranged, just come off under the situation that is unlikely to not ground from side at the initialization mouth of a river.
Embodiment 5
The impregnated core diamond bit of getting that with the diameter is 75mm is an example, and designing bits is 5 layers of renewable mouth of a river, and the quantity that accounts for 24.6% each layer of design mouth of a river of labial surface at the bottom of the carcass by mouth of a river area is 4, width 12mm, height 5mm; The initialization mouth of a river 1 graphite block is bonded on the position, the mouth of a river of the design of the bottom in the graphite jig, the working lining carcass piece of cold moudling is placed in the mould between 1 graphite block of the initialization mouth of a river, constitute the first floor carcass; The arrangement that on vertical plane, misplaces of the hiding mouth of a river 2 of second layer carcass and the initialization mouth of a river 1, the angle of dislocation is half of the adjacent mouth of a river of layer, the same mouth of a river and center of circle angulation, be the first floor position that hides the mouth of a river than the initialization mouth of a river 45 that staggered, be inverted trapezoidal graphite block and be fixed in the mould centre that two-phase on the first floor carcass borders on the river mouthful, be inverted and be working lining carcass piece between the trapezoidal graphite block; The hiding mouth of a river 2 of the 3rd layer of carcass and the initialization mouth of a river 1 are on same vertical plane, hiding between 2 graphite blocks of the mouth of a river is working lining carcass piece, the hiding mouth of a river 2 graphite blocks of the 4th layer of carcass and the second layer are hidden the mouth of a river 2 graphite blocks on same vertical plane, the hiding mouth of a river 2 of layer 5 and the mouth of a river, the 3rd layer of Tibetan 2 graphite blocks are on same vertical plane, the thick transition zone tire material of top dress 4mm of one deck working lining carcass piece and the hiding mouth of a river 2 graphite blocks in the end, and compacting; Put into the steel body on the transition zone tire material, at 1000 ℃, pressure is at 155Kgf/cm
2Condition under hot-forming, be placed on and slowly cool to room temperature in the heat insulating material, process the initialization mouth of a river with sander at last, will hide mouth of a river graphite block and stay in the carcass; Also can remove hiding place, mouth of a river graphite block, then according to the mole of the form sintering low-intensity material at the trapezoidal mouth of a river, be bumped into and hide position, the mouth of a river, make itself and mouth of a river wall that certain intensity that cooperates be arranged, just come off under the situation that is unlikely to not ground from side at the initialization mouth of a river.
Embodiment 6
The impregnated core diamond bit of getting that with the diameter is 75mm is an example, and designing bits is 6 layers of renewable mouth of a river, and the quantity that accounts for 34% each layer of design mouth of a river of labial surface at the bottom of the carcass by mouth of a river area is 6, width 11mm, height 4mm; The initialization mouth of a river 1 graphite block is bonded on the position, the mouth of a river of the design of the bottom in the graphite jig, the working lining carcass piece of cold moudling is placed in the mould between 1 graphite block of the initialization mouth of a river, constitute the first floor carcass; The arrangement that on vertical plane, misplaces of the hiding mouth of a river 2 of second layer carcass and the initialization mouth of a river 1, the angle of dislocation is half of the adjacent mouth of a river of layer, the same mouth of a river and center of circle angulation, be the first floor position that hides the mouth of a river than the 30 ° of angles of having staggered, the initialization mouth of a river, be inverted trapezoidal graphite block and be fixed in the mould centre that two-phase on the first floor carcass borders on the river mouthful, be inverted and be working lining carcass piece between the trapezoidal graphite block; The hiding mouth of a river 2 of the 3rd layer of carcass and the initialization mouth of a river 1 are on same vertical plane, hiding between 2 graphite blocks of the mouth of a river is working lining carcass piece, the hiding mouth of a river 2 graphite blocks of the 4th layer of carcass and the second layer are hidden the mouth of a river 2 graphite blocks on same vertical plane, the hiding mouth of a river 2 of layer 5 and the mouth of a river, the 3rd layer of Tibetan 2 graphite blocks are on same vertical plane, the hiding mouth of a river 2 graphite blocks of layer 6 and the mouth of a river, the 4th layer of Tibetan 2 graphite blocks are on same vertical plane, by that analogy, so the N layer hide the mouth of a river 2; The thick transition zone tire material of top dress 5mm of one deck working lining carcass piece and the hiding mouth of a river 2 graphite blocks in the end, and compacting; Put into the steel body on the transition zone tire material, at 1000 ℃, pressure is at 160Kgf/cm
2Condition under hot-forming, be placed on and slowly cool to room temperature in the heat insulating material, process the initialization mouth of a river with sander at last, will hide mouth of a river graphite block and stay in the carcass; Also can remove hiding place, mouth of a river graphite block, then according to the mole of the form sintering low-intensity material at the trapezoidal mouth of a river, be bumped into and hide position, the mouth of a river, make itself and mouth of a river wall that certain intensity that cooperates be arranged, just come off under the situation that is unlikely to not ground from side at the initialization mouth of a river.
Claims (4)
1, the diamond core bit at the renewable mouth of a river, be by the steel body, carcass constitutes, it is characterized in that, be provided with the above mouth of a river 2 that hides of one deck initialization mouth of a river 1 and one deck, hiding the mouth of a river 2 continuous exposures with the wearing and tearing of carcass 3 produces, the area at each layer mouth of a river accounts for 16%～35% of labial surface at the bottom of the carcass, in with one deck, design the mouth of a river of varying number according to the bit diameter size, each mouth of a river width 4-12mm, height 4-8mm, and evenly distribute, adjacent two layers mouth of a river interaction sequences on vertical plane is arranged, the angle of dislocation is half of the adjacent mouth of a river of layer, the same mouth of a river and center of circle angulation, the centre at the two adjacent two-layer mouths of a river about promptly the hiding mouth of a river 2 of each layer is positioned at, promptly the 3rd layer of hiding mouth of a river 2 be positioned at the initialization mouth of a river 1 directly over.
2, according to the diamond core bit at the described renewable mouth of a river of claim 1, it is characterized in that, the initialization mouth of a river 1 is the right angle rectangle on the drill bit vertical section, hide the mouth of a river 2 for the right angle rectangle or be inverted trapezoidally, the initialization mouth of a river 1 and the hiding mouth of a river 2 are the peg gate or the fan-shaped mouth of a river on cross section.
3, according to the manufacture method of the diamond core bit at the described renewable mouth of a river of claim 1, it is characterized in that, comprise following order and step:
A, account for the percentage design mouth of a river number and the mouth of a river size of labial surface at the bottom of the carcass, by the measure-alike graphite block in the mouth of a river size preparation of design and the initialization mouth of a river 1 and the hiding mouth of a river 2 according to bit diameter and mouth of a river area;
B, the volumetric spaces that the designed initialization of the deduction step a mouth of a river 1 or the hiding mouth of a river 2 are occupied in the plane from the drill bit cross section prepare steel die according to mouth of a river height and remaining segment space again;
C, more diamantiferous compound is placed steel die, at 4t/cm
2Pressure under cold pressing and make the working lining carcass piece identical with mouth of a river height;
D, the initialization mouth of a river 1 graphite block is bonded on the position, the mouth of a river of the design of the bottom in the graphite jig, the working lining carcass piece of cold moudling is placed in the mould between 1 graphite block of the initialization mouth of a river, constitute the first floor carcass;
The arrangement that on vertical plane, misplaces of the hiding mouth of a river 2 of e, second layer carcass and the initialization mouth of a river 1, the angle of dislocation is half of the adjacent mouth of a river of layer, the same mouth of a river and center of circle angulation, be inverted trapezoidal graphite block and be fixed in the mould centre that two-phase on the first floor carcass borders on the river mouthful, be inverted and be working lining carcass piece between the trapezoidal graphite block;
The hiding mouth of a river 2 of f, the 3rd layer of carcass and the initialization mouth of a river 1 are on same vertical plane, hiding between 2 graphite blocks of the mouth of a river is working lining carcass piece, the hiding mouth of a river 2 graphite blocks of the 4th layer of carcass and the second layer are hidden the mouth of a river 2 graphite blocks on same vertical plane, the hiding mouth of a river 2 of layer 5 and the mouth of a river, the 3rd layer of Tibetan 2 graphite blocks are on same vertical plane, the hiding mouth of a river 2 graphite blocks of layer 6 and the mouth of a river, the 4th layer of Tibetan 2 graphite blocks are on same vertical plane, by that analogy, so the N layer hide the mouth of a river 2;
G, the thick transition zone tire material of top dress 3-5mm of one deck working lining carcass piece and the hiding mouth of a river 2 graphite blocks in the end, and compacting;
On h, the transition zone tire material is the steel body;
I, by the pressure sintering sintering, be warming up to uniform temperature, be pressurized to certain pressure, heat-insulation pressure keeping certain hour again, drill bit taken out to be placed on slowly cool to room temperature in the heat insulating material, process the initialization mouth of a river 1, be the diamond core bit at the renewable mouth of a river with sander.
4, according to the manufacture method of the diamond core bit at the described renewable mouth of a river of claim 3, it is characterized in that the sintering temperature of pressure sintering is 900-1000 ℃, pressure is 140-160Kgf/cm
2
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100511529A CN101353946A (en) | 2008-09-11 | 2008-09-11 | Diamond core bit capable of reproducing water gap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100511529A CN101353946A (en) | 2008-09-11 | 2008-09-11 | Diamond core bit capable of reproducing water gap |
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| CN101353946A true CN101353946A (en) | 2009-01-28 |
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| CNA2008100511529A Pending CN101353946A (en) | 2008-09-11 | 2008-09-11 | Diamond core bit capable of reproducing water gap |
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| CN101608533B (en) * | 2009-07-20 | 2012-06-20 | 吉林大学 | Drill bit impregnated with diamond film and manufacturing method thereof |
| CN102704855A (en) * | 2012-06-08 | 2012-10-03 | 李建新 | Process for preparing diamond geological coring bit |
| CN103774996A (en) * | 2014-01-26 | 2014-05-07 | 中国地质大学（武汉） | Diamond drill bit which cannot generate electron hole phenomenon |
| CN107107220A (en) * | 2014-12-22 | 2017-08-29 | 喜利得股份公司 | Method for the jumping through rings of coring bit and for manufacturing jumping through rings |
| CN107107221A (en) * | 2014-12-22 | 2017-08-29 | 喜利得股份公司 | Jumping through rings body for coring bit |
| CN108825138A (en) * | 2018-07-12 | 2018-11-16 | 河北航华金刚石制品有限公司 | A method of reamer graphite mouth of a river piece is replaced using compressed tablets |
| CN110344768A (en) * | 2019-05-27 | 2019-10-18 | 中国地质大学（武汉） | A kind of heat sink coring diamond bit and preparation method thereof based on 3D printing |
| CN113073942A (en) * | 2021-03-19 | 2021-07-06 | 中南大学 | Drill bit for drilling |
| CN113802989A (en) * | 2021-09-18 | 2021-12-17 | 吉林大学 | Ultrahigh working layer involute type water gap diamond-impregnated bit and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608533B (en) * | 2009-07-20 | 2012-06-20 | 吉林大学 | Drill bit impregnated with diamond film and manufacturing method thereof |
| CN102704855A (en) * | 2012-06-08 | 2012-10-03 | 李建新 | Process for preparing diamond geological coring bit |
| CN102704855B (en) * | 2012-06-08 | 2014-05-07 | 李建新 | Process for preparing diamond geological coring bit |
| CN103774996A (en) * | 2014-01-26 | 2014-05-07 | 中国地质大学（武汉） | Diamond drill bit which cannot generate electron hole phenomenon |
| CN107107220A (en) * | 2014-12-22 | 2017-08-29 | 喜利得股份公司 | Method for the jumping through rings of coring bit and for manufacturing jumping through rings |
| CN107107221A (en) * | 2014-12-22 | 2017-08-29 | 喜利得股份公司 | Jumping through rings body for coring bit |
| CN108825138A (en) * | 2018-07-12 | 2018-11-16 | 河北航华金刚石制品有限公司 | A method of reamer graphite mouth of a river piece is replaced using compressed tablets |
| CN110344768A (en) * | 2019-05-27 | 2019-10-18 | 中国地质大学（武汉） | A kind of heat sink coring diamond bit and preparation method thereof based on 3D printing |
| CN110344768B (en) * | 2019-05-27 | 2020-11-27 | 中国地质大学（武汉） | Heat sink coring diamond bit based on 3D printing and preparation method thereof |
| CN113073942A (en) * | 2021-03-19 | 2021-07-06 | 中南大学 | Drill bit for drilling |
| CN113802989A (en) * | 2021-09-18 | 2021-12-17 | 吉林大学 | Ultrahigh working layer involute type water gap diamond-impregnated bit and preparation method thereof |
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