CN117188979B - Drilling tooth with primary and secondary tooth structure, manufacturing method and drill bit - Google Patents
Drilling tooth with primary and secondary tooth structure, manufacturing method and drill bit Download PDFInfo
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- CN117188979B CN117188979B CN202311464669.1A CN202311464669A CN117188979B CN 117188979 B CN117188979 B CN 117188979B CN 202311464669 A CN202311464669 A CN 202311464669A CN 117188979 B CN117188979 B CN 117188979B
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Abstract
The invention discloses a drilling tooth with a primary-secondary tooth structure, a manufacturing method and a drill bit, and relates to the technical field of geological drilling, wherein the drilling tooth comprises a primary tooth made of hard alloy and a cylindrical secondary tooth made of CVD diamond, the primary tooth is provided with a cutting area for cutting rock strata, and a welding groove is formed in the cutting area; in the radial direction of the drilling tooth, the section of the welding groove is in a major arc shape or a circular shape; the sub-teeth are welded in the welding groove; according to the invention, the main tooth made of the hard alloy is provided with the welding groove with the arc shape or the circular shape, and the welding groove is internally provided with the welding teeth, so that more than half of the teeth are wrapped by the main tooth, and the connection strength of the CVD diamond and the hard alloy can be improved. Meanwhile, the sub-teeth of the CVD diamond are arranged in the cutting area of the drilling tooth, so that the wear resistance of the cutting area of the drilling tooth can be obviously improved, and the performance and the service life of the drilling tooth are greatly improved.
Description
Technical Field
The invention relates to the technical field of geological drilling, in particular to a drilling tooth with a primary-secondary tooth structure, a manufacturing method and a drill bit.
Background
The known geological drill bit teeth mainly comprise polycrystalline diamond compact (PDC diamond) teeth, powder metallurgy impregnated diamond teeth, hard alloy teeth and the like. The PDC diamond compact is mainly adopted for manufacturing drilling teeth, the performance of the drilling teeth directly determines the drilling efficiency and the service life, and the drilling efficiency can be reduced by more than 50% particularly when the drilling depth exceeds 6000 m for complex environments formed by coupling multiple factors such as underground high temperature (more than 300 ℃), high-speed impact, abrasive wear, corrosion and the like in the deep well drilling and coring processes.
At present, two research works are mainly developed about how to improve the performance of a geological drill bit, namely, PDC drill tooth components are improved; and secondly, optimizing the overall structure design of the drill bit.
When the PDC bit composition was modified, fine grain (0-2 μm) polycrystalline diamond doped with 0.5% nano vanadium carbide was sintered, and the hardness and impact resistance of the vanadium carbide doped samples were found to be 66.65GPa and 160J, respectively, which were improved by 8.7% and 100% over the undoped samples. Meanwhile, the vanadium carbide with high hardness occupies the cobalt space in the polycrystalline diamond, so that the wear resistance of the polycrystalline diamond is effectively improved.
This approach, starting from improving PDC diamond additives, improves the wear resistance of polycrystalline diamond, but has limited performance enhancement. The defects of easy falling of diamond, poor strength and toughness and the like of the PDC material can not be fundamentally solved, and the abrasion of the drilling teeth is still serious.
The Chinese patent with application number 202310786831.5 discloses a novel beak-shaped tooth multi-blade PDC drill bit, a drill bit matrix is provided with water holes, blades and teeth, a design scheme of circumferentially uniformly distributing nine blades by 40 degrees is adopted, beak-shaped PDC main teeth and auxiliary teeth are alternately arranged in front-back rows of the blades, and in the working process, the main teeth penetrate, split and the auxiliary teeth shear to jointly break rock. The design of multiple blades balances the stress distribution of the rock at the bottom of the well and the blades, and effectively reduces the abrasion loss of teeth in unit time.
The technology starts from the integral structure of the drill bit, improves the arrangement of the drill teeth, and the drill teeth still use the traditional PDC drill teeth, so that the technical problems of serious abrasion of the cutting part of the drill bit, slow tooth entering and the like are solved to a certain extent, but the performance of the drill teeth is not improved.
The Chinese patent with application number 201710447313.5 discloses a diamond composite drill bit for hard slipping stratum, which consists of a rigid body and impregnated block cutting blades, wherein the lip surfaces of the blades are sloped and are processed into corrugated grooves, a layer of PCD diamond cutting strips or CVD diamond cutting strips are embedded at the cutting ends of the blades, and the difference between the hardness of a matrix and the hardness of diamond is utilized by reasonably arranging the diamond cutting strips and impregnated diamond, so that the service life of the drill bit is prolonged and the drilling efficiency is improved.
In the technology, diamond is inlaid on the side face of a drill bit and is not used as a main cutting edge port for drilling, and the diamond is mainly used for keeping the diameter of a drilled hole. The diamond cutting strip does not need to make a certain sharp cutting edge.
The performance of the geological drill bit is improved to a certain extent by the work, but the drilling capability of the drill bit cannot be greatly improved to meet the deep well drilling requirement.
Disclosure of Invention
The invention aims to provide a drill tooth with a primary-secondary tooth structure, a manufacturing method and a drill bit, so as to solve the problems in the prior art, solve the technical problem that CVD diamond is difficult to apply on the drill tooth, obviously improve the wear resistance of the cutting area of the drill tooth, and greatly improve the performance and the service life of the drill tooth.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a drill tooth with a primary-secondary tooth structure, which comprises a primary tooth made of hard alloy and a cylindrical secondary tooth made of CVD diamond, wherein the primary tooth is provided with a cutting area for cutting rock strata, a welding groove is arranged in the cutting area, and the secondary tooth is welded in the welding groove; in the radial direction of the drilling tooth, the section of the welding groove is in a major arc shape or a circular shape, when the section of the welding groove is in a major arc shape, the outer arc surface of the sub tooth is overlapped with the arc surface of the main tooth, and when the section of the welding groove is in a circular shape, the arc surface of the sub tooth is inscribed with the arc surface of the main tooth.
Preferably, the number of the sub-teeth is 1 or more, when the number of the sub-teeth is 1 or more, the diameters of the plurality of the sub-teeth are the same or different, when the diameters of the plurality of the sub-teeth are the same, the plurality of the sub-teeth are uniformly distributed in the cutting area, when the diameters of the plurality of the sub-teeth are different, the plurality of the sub-teeth are distributed in the cutting area, and the sub-teeth with larger diameters are arranged at positions with high wear degrees in the cutting area.
Preferably, the end surfaces of the child teeth are flush with the end surfaces of the parent teeth.
Preferably, the distance between adjacent sub-teeth is D, and the distance is 2× (R1+R2) equal to or greater than D equal to or greater than R1+R2, wherein R1 and R2 are the radii of the adjacent sub-teeth respectively.
Preferably, the cutting edges of the sub-teeth are chamfered, and the chamfer angle is 10-30 degrees.
The invention also discloses a manufacturing method of the drill tooth with the primary-secondary tooth structure, which is characterized by comprising the following steps of:
s1: processing a welding groove on the female tooth;
s2: machining the CVD diamond into cylindrical sub-teeth;
s3: and placing the sub-teeth into a welding groove, placing welding powder, and welding under vacuum condition.
Preferably, in S1, a welding groove is processed by adopting an electric spark etching process; and S2, machining the sub-teeth by adopting a laser cutting process.
The invention also discloses a drill bit, which comprises a plurality of blades uniformly arranged along the circumferential direction, wherein the blades are provided with a plurality of drilling teeth, the projections of the plurality of drilling teeth in the circumferential direction are complementary, and the projections of the sub-teeth in the plurality of drilling teeth in the circumferential direction are complementary.
Compared with the prior art, the invention has the following technical effects:
according to the invention, the main tooth made of the hard alloy is provided with the welding groove with the arc shape or the circular shape, and the sub tooth made of the CVD diamond is welded in the welding groove, and most of the sub tooth is wrapped by the main tooth, so that the connection strength of the CVD diamond and the hard alloy can be improved, and the technical problem that the CVD diamond is difficult to apply to the drilling tooth is solved. Meanwhile, the sub-teeth of the CVD diamond are arranged in the cutting area of the drilling tooth, so that the wear resistance of the cutting area of the drilling tooth can be obviously improved, the performance and the service life of the drilling tooth are greatly improved, great breakthrough is generated on drilling of a deep hard rock layer, and great economic and social benefits are brought.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a tooth drilling structure of a full-pregnant welded equal-diameter sub-tooth;
fig. 2 is a schematic diagram of a tooth drilling structure of semi-welded equal-diameter sub-teeth;
fig. 3 is a schematic diagram of a tooth drilling structure of a full-pregnant welded unequal-diameter sub-tooth;
fig. 4 is a schematic diagram of a tooth drilling structure of semi-welded unequal diameter sub-teeth;
FIG. 5 is a schematic diagram of a half-pregnant welding tooth structure of a sub-tooth drill;
wherein, 1, the female teeth; 2. and (5) sub-teeth.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a drill tooth with a primary-secondary tooth structure, a manufacturing method and a drill bit, so as to solve the problems in the prior art, solve the technical problem that CVD diamond is difficult to apply on the drill tooth, obviously improve the wear resistance of the cutting area of the drill tooth, and greatly improve the performance and the service life of the drill tooth.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1:
as shown in fig. 1 to 5, the present embodiment provides a drill tooth with a primary-secondary tooth structure, which includes a primary tooth 1 made of cemented carbide and a cylindrical secondary tooth 2 made of CVD diamond, wherein the primary tooth 1 has a cutting area for cutting a rock layer, and 1 or more welding grooves are provided in the cutting area. In this embodiment, the female tooth 1 is cylindrical before the welding groove is formed, and the axial direction of the welding groove is parallel to the axial direction of the female tooth 1. In the radial direction of the drilling tooth, the section of the welding groove is a major arc shape, the central angle corresponding to the major arc shape is larger than 180 degrees, the opening of the welding groove is exposed from the surface of the female tooth 1, the central angle corresponding to the arc shape is larger than 180 degrees, the section shape of the sub tooth 2 is matched with the section shape of the welding groove, and the outer arc surface of the sub tooth 2 is overlapped with the arc surface of the female tooth 1. Or the section of the welding groove is in a circular shape, the sub-teeth 2 are also in a cylindrical shape, and the sub-teeth 2 are inscribed with the surface of the mother tooth 1 after the welding is finished. The sub-teeth 2 are welded in the welding groove. When the number of the welding grooves is 1, the welding grooves can only be in a major arc shape. According to the embodiment, the main tooth 1 made of the hard alloy is provided with the welding groove with the arc shape or the circular shape, the sub tooth 2 made of the CVD diamond is welded in the welding groove, more than half of the sub tooth 2 is wrapped by the main tooth 1, so that the connection strength of the CVD diamond and the hard alloy can be improved, and the technical problem that the CVD diamond is difficult to apply on the drilling tooth is solved. Meanwhile, the sub-teeth 2 of the CVD diamond are arranged in the cutting area of the drilling teeth, so that the wear resistance of the cutting area of the drilling teeth can be obviously improved, the performance and the service life of the drilling teeth can be greatly improved, great breakthrough can be generated on drilling of deep hard rock layers, and great economic and social benefits are brought.
In the embodiment, YG6 hard alloy is adopted for the female tooth 1, the diameter is 10 mm-30 mm, and the height is 5 mm-50 mm. The height of the cylindrical sub-tooth 2 is 2 mm-5 mm, and the diameter is 4 mm-10 mm. The smaller height of the sub-teeth 2 affects the total welding area, and further affects the welding strength; larger diameters can result in larger thermal stresses after welding, thereby affecting the performance.
The number of the sub-teeth 2 in the present embodiment may be 1, or 2 or more. When the number of the sub-teeth 2 is set to be 2 or more, the diameters of the sub-teeth 2 are the same or different, and when the diameters of the plurality of sub-teeth 2 are different, the sub-teeth 2 having a larger diameter are set at positions where the degree of wear of the drill teeth is high. Whether the diameters of the sub-teeth 2 are the same or different, and the distance between the adjacent sub-teeth 2 is D, the requirement that 2× (R1+R2) is equal to or greater than D is equal to or greater than R1+R2 is satisfied, and R1 and R2 are the radii of the adjacent sub-teeth 2 respectively.
The end face of the sub-tooth 2 in this embodiment is flush with the end face of the parent tooth 1.
In the embodiment, the cutting edges of the sub-teeth 2 are chamfered, the chamfering angle is 10-30 degrees, and the chamfering width is 0.05-0.3 mm. The chamfer portion of the sub-tooth 2 is the main cutting edge of the drill tooth.
Example 2:
the embodiment discloses a manufacturing method of a drill tooth with a primary-secondary tooth structure, which is characterized by comprising the following steps:
s1: processing a welding groove on the female tooth 1;
s2: machining the CVD diamond into cylindrical sub-teeth 2;
s3: the sub-teeth 2 are placed into a welding groove, welding powder is placed into the welding groove, and welding is carried out under the vacuum condition.
S1, machining a welding groove by adopting an electric spark etching process; and S2, machining the sub-teeth 2 by adopting a laser cutting process.
The following describes the method for manufacturing the drill tooth in this embodiment in detail through specific machining examples of drill teeth with several different structures.
Example 1:
and manufacturing the drilling tooth with the tooth diameter phi of 19mm and the full-pregnant welding 5-sub-tooth 2 with the same diameter.
The first step: selecting CVD diamond with thickness of more than 4mm, grinding one surface on a diamond flat grinder, polishing the other surface, enabling the polished surface to reach mirror surface grade, and enabling the thickness of the CVD diamond to reach 4mm.
And a second step of: the CVD diamond manufactured in the first step is cut into five cylindrical sub-teeth 2 with the diameter of 4.4mm and the height of 4mm by adopting a YAG laser, and the cylindrical sub-teeth are cleaned.
And a third step of: a cylinder of YG6 cemented carbide was selected as the blank for the master tooth 1, with a diameter of 23mm and a height of 20mm. And 5 cylindrical welding grooves with the diameter of 4.4mm and the depth of 4mm are processed on the upper surface of the blank by electric spark etching, the distance between the circle centers of adjacent welding grooves is 4.7mm, the distance between the circle center of each welding groove and the circle center of the hard alloy cylinder is 7.3mm, and the blank is cleaned after being processed.
Fourth step: and (3) putting the sub-teeth 2 and a proper amount of silver copper titanium welding powder into a welding groove of the main tooth 1, wherein one end of the bright surface of the sub-teeth 2 faces upwards. The child teeth 2 and the mother teeth 1 are pressed by an alumina ceramic plate with the thickness of 0.2mm, and a weight of 100g is pressed above the ceramic plate. The whole is then placed in a vacuum furnace.
Fifth step: vacuumizing to 2X 10-3Pa, heating to 860 ℃, preserving heat for 1 hour, slowly cooling for 2 hours to below 200 ℃, and shutting down.
Sixth step: and taking out the primary sample blocks of the welded primary and secondary drill teeth, removing the ceramic plate on the upper surface, and if the ceramic plate is welded on the upper surface by welding flux, grinding off the ceramic plate on a special diamond tool grinding machine by using an ultrafine diamond grinding wheel, and keeping the upper surface smooth and flat. The cylindrical central shaft of the female tooth 1 is used as a rotating shaft, and the outer circle of the female tooth 1 is ground to the diameter phi 19mm by a diamond special grinding machine.
Seventh step: the upper edge of the cylinder of the female tooth 1 is chamfered by a diamond special grinding machine, the included angle between the chamfer and the upper surface is 10 degrees, and the chamfer width is 0.2mm.
Eighth step: detecting, marking and packaging.
And (3) completing the manufacture of the drilling teeth with the diameter phi 19mm, the height 20mm, the equal-diameter five-tooth 2 and the full-pregnant welding primary-secondary tooth structure, wherein the drilling tooth structure is shown in a figure I.
Example 2: and manufacturing the drill tooth with the tooth diameter phi 16mm and the semi-welded 5-tooth 2 equal-diameter primary-secondary tooth structure.
The first step: the same as in example 1, first step
And a second step of: second step as in example 1
And a third step of: third step as in example 1
Fourth step: step four as in example 1
Fifth step: step five as in example 1
Sixth step: and taking out the primary sample blocks of the welded primary and secondary drill teeth, removing the ceramic plate on the upper surface, and if the ceramic plate is welded on the upper surface by welding flux, grinding off the ceramic plate on a special diamond tool grinding machine by using an ultrafine diamond grinding wheel, and keeping the upper surface smooth and flat.
The cylindrical central shaft of the female tooth 1 is used as a rotating shaft, and the outer circle of the female tooth 1 is ground to the diameter phi 16mm by a diamond special grinding machine.
Seventh step: the seventh step of example 1 is the same.
Eighth step: the eighth step of example 1.
The drilling tooth with the diameter phi 16mm, the height 20mm, the equal-diameter five-tooth 2 and the half-pregnant welding primary-secondary tooth structure is obtained, and the drilling tooth structure is shown in a figure II.
Example 3: and manufacturing the drilling tooth with the tooth diameter phi 16mm, the height 20mm, the non-equal-diameter 4 primary-secondary teeth 2 and the full-pregnant welding primary-secondary tooth structure.
The first step: selecting CVD diamond with thickness of more than 3mm, grinding one surface on a diamond flat grinder, polishing the other surface, enabling the polished surface to reach mirror surface grade, and enabling the thickness of the diamond to reach 3mm.
And a second step of: and (3) cutting the CVD diamond manufactured in the first step into two cylindrical sub-teeth 2 with the diameter of 5mm and the height of 3mm and two sub-teeth 2 with the diameter of 4mm and the height of 3mm by adopting a YAG laser, and cleaning.
And a third step of: a cylinder of YG6 cemented carbide was selected as the blank for the master tooth 1, 18mm in diameter and 20mm in height. And 2 cylindrical welding grooves with the diameter of 5mm and the depth of 3mm and 2 welding grooves with the diameter of 4mm and the depth of 3mm are respectively processed on the upper surface of the blank by electric spark etching. Adjacent welding grooves are not intersected, and the outer circular arc of each welding groove is inscribed with a concentric circle of the female tooth 1 with the diameter of 16 mm; and cleaning after the preparation.
Fourth step: and respectively placing the 4 sub-teeth 2 into corresponding welding grooves, adding a proper amount of welding flux, and enabling one end of the bright surface of the sub-tooth 2 to face upwards. The mother tooth 1 and the child tooth 2 are pressed by an alumina ceramic plate with the thickness of 0.2mm, a weight of 100g is pressed above the ceramic plate, and then the whole is put into a vacuum furnace.
Fifth step: the fifth step is the same as in example 1.
Sixth step: and taking out the primary sample blocks of the welded primary and secondary drill teeth, removing the ceramic plate on the upper surface, and if the ceramic plate is welded on the upper surface by welding flux, grinding off the ceramic plate on a special diamond tool grinding machine by using an ultrafine diamond grinding wheel, and keeping the upper surface smooth and flat. The cylindrical central shaft of the female tooth 1 is used as a rotating shaft, and the outer circle of the female tooth 1 is ground to the diameter phi 16mm by a special grinding machine for a diamond cutter.
Seventh step: the seventh step of example 1 is the same.
Eighth step: the eighth step of example 1.
The drilling tooth with the diameter phi 16mm, the height 20mm, the non-equal diameter four-sub-tooth 2 and the full-pregnant and welded sub-mother tooth structure is obtained, and the drilling tooth structure is shown in a third drawing.
Example 4: and manufacturing the drilling tooth with the tooth diameter phi 13mm and the semi-welded 4-tooth 2 non-equal-diameter primary-secondary tooth structure.
The first step: the first step is as in example 3.
And a second step of: the second step is the same as in example 3.
And a third step of: the third step is as in example 3.
Fourth step: the fourth step is as in example 3.
Fifth step: the fifth step is the same as in example 3.
Sixth step: and taking out the welded sample blocks of the primary and secondary drill teeth, removing the ceramic plate on the upper surface, and if the ceramic plate is welded on the upper surface by welding flux, grinding off the ceramic plate on a special diamond tool grinding machine by using an ultrafine diamond grinding wheel, and keeping the upper surface smooth. The cylindrical central shaft of the female tooth 1 is used as a rotating shaft, and the outer circle of the female tooth 1 is ground to the diameter phi 13mm by a special grinding machine for a diamond cutter.
Seventh step: step seven as in example 3
Eighth step: step eight as in example 3
And obtaining the drilling tooth with the semi-pregnant welding primary-secondary tooth structure of the non-equal-diameter four-secondary tooth 2, wherein the diameter phi of the drilling tooth is 13mm, the height of the drilling tooth is 20mm, and the drilling tooth structure is shown in a figure IV.
Example 5: and manufacturing a tooth 2 and a half-welded tooth structure of the primary and secondary teeth.
According to the steps, the drill tooth with the primary tooth 1 diameter of 13mm and the primary tooth 2 diameter of 10.0mm and half-pregnant welding primary and secondary tooth structure with the height of 20mm can be manufactured, and the drill tooth structure is shown in a figure five.
Example 3:
the embodiment discloses drill bit, including evenly setting up a plurality of wings along circumference, be provided with a plurality of brill tooth as above on the wing, a plurality of brill tooth are complementary at the ascending projection of circumference, and the sub-tooth 2 of a plurality of brill teeth on the drill bit is complementary at the ascending projection of circumference, when guaranteeing that the drill bit is rotatory a week, sub-tooth 2 can cut the rock of circumference within range, also can protect mother tooth 1, improves the drilling efficiency, prolongs the life of drill bit.
The adaptation to the actual need is within the scope of the invention.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The drill tooth with the primary-secondary tooth structure is characterized by comprising a primary tooth made of hard alloy and a cylindrical secondary tooth made of CVD diamond, wherein the primary tooth is provided with a cutting area for cutting a rock stratum, a welding groove is formed in the cutting area, and the secondary tooth is welded in the welding groove by utilizing a vacuum welding process; in the radial direction of the drilling tooth, the section of the welding groove is in a major arc shape or a circular shape, when the section of the welding groove is in a major arc shape, the outer arc surface of the sub tooth is overlapped with the arc surface of the main tooth, and when the section of the welding groove is in a circular shape, the arc surface of the sub tooth is inscribed with the arc surface of the main tooth.
2. The drill tooth with a primary-secondary tooth structure according to claim 1, wherein the number of the secondary teeth is 1 or more, when the number of the secondary teeth is 1 or more, the diameters of the number of the secondary teeth are the same or different, when the diameters of the number of the secondary teeth are the same, the number of the secondary teeth are distributed in the cutting area, when the diameters of the number of the secondary teeth are different, the number of the secondary teeth are distributed in the cutting area, and the secondary teeth with larger diameters are arranged at positions with high wear degrees in the cutting area.
3. The drill tooth having a primary and secondary tooth structure as claimed in claim 1, wherein an end face of said primary tooth is flush with an end face of said secondary tooth.
4. The drill tooth with the primary-secondary tooth structure according to claim 2, wherein the distance between adjacent primary teeth is D, 2× (r1+r2) > D is equal to or greater than r1+r2, and R1 and R2 are radii of adjacent primary teeth, respectively.
5. The drill tooth with the primary-secondary tooth structure according to claim 1, wherein the cutting edges of the primary teeth are chamfered, and the chamfer angle is 10-30 degrees.
6. The method for manufacturing the drill tooth with the primary-secondary tooth structure according to any one of claims 1 to 5, comprising the following steps:
s1: processing a welding groove on the female tooth;
s2: machining the CVD diamond into cylindrical sub-teeth;
s3: and placing the sub-teeth into a welding groove, placing welding powder, and welding under vacuum condition.
7. The method for manufacturing the drill tooth with the primary-secondary tooth structure according to claim 6, wherein the welding groove is processed by adopting an electric spark etching process in the step S1; and S2, machining the sub-teeth by adopting a laser cutting process.
8. A drill bit, characterized by comprising a plurality of blades uniformly arranged along the circumferential direction, wherein a plurality of drilling teeth according to any one of claims 1-5 are arranged on the blades, projections of the plurality of drilling teeth in the circumferential direction are complementary, and projections of sub-teeth in the plurality of drilling teeth in the circumferential direction on the drill bit are complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311464669.1A CN117188979B (en) | 2023-11-07 | 2023-11-07 | Drilling tooth with primary and secondary tooth structure, manufacturing method and drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311464669.1A CN117188979B (en) | 2023-11-07 | 2023-11-07 | Drilling tooth with primary and secondary tooth structure, manufacturing method and drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117188979A CN117188979A (en) | 2023-12-08 |
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| DE19810775A1 (en) * | 1998-03-06 | 1999-09-09 | Heller Werkzeug Gmbh Geb | Bore crown used for hammering in |
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| CN204024480U (en) * | 2014-07-01 | 2014-12-17 | 中国石油化工集团公司 | Be applicable to the plough cut type PDC drill bit of hard formation |
| CN108145384A (en) * | 2017-12-27 | 2018-06-12 | 武汉锐特金刚石有限公司 | A kind of adamas composite sheet of tooth face and its manufacturing method |
| CN208152950U (en) * | 2018-05-15 | 2018-11-27 | 苏州思珀利尔工业技术有限公司 | The polycrystalline diamond hard alloy complex sheet of high bond strength |
| CN113236135A (en) * | 2021-06-30 | 2021-08-10 | 金沙县仁德钻探工具有限公司 | Five-wing flat-top nine-tooth anti-tuberculosis drill bit |
| CN113389495A (en) * | 2021-07-28 | 2021-09-14 | 潍坊盛德石油机械制造有限公司 | PDC diamond bit capable of being salvaged while drilling |
| CN115874951A (en) * | 2022-12-20 | 2023-03-31 | 石家庄钻之峰工具制造有限公司 | Method for manufacturing diamond drill bit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8689910B2 (en) * | 2009-03-02 | 2014-04-08 | Baker Hughes Incorporated | Impregnation bit with improved cutting structure and blade geometry |
| GB2506901B (en) * | 2012-10-11 | 2019-10-23 | Halliburton Energy Services Inc | Drill bit apparatus to control torque on bit |
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|---|---|---|---|---|
| DE19810775A1 (en) * | 1998-03-06 | 1999-09-09 | Heller Werkzeug Gmbh Geb | Bore crown used for hammering in |
| CN102704853A (en) * | 2012-06-21 | 2012-10-03 | 四川深远石油钻井工具有限公司 | Modular cutting tooth with controllable drilling specific pressure |
| CN204024480U (en) * | 2014-07-01 | 2014-12-17 | 中国石油化工集团公司 | Be applicable to the plough cut type PDC drill bit of hard formation |
| CN108145384A (en) * | 2017-12-27 | 2018-06-12 | 武汉锐特金刚石有限公司 | A kind of adamas composite sheet of tooth face and its manufacturing method |
| CN208152950U (en) * | 2018-05-15 | 2018-11-27 | 苏州思珀利尔工业技术有限公司 | The polycrystalline diamond hard alloy complex sheet of high bond strength |
| CN113236135A (en) * | 2021-06-30 | 2021-08-10 | 金沙县仁德钻探工具有限公司 | Five-wing flat-top nine-tooth anti-tuberculosis drill bit |
| CN113389495A (en) * | 2021-07-28 | 2021-09-14 | 潍坊盛德石油机械制造有限公司 | PDC diamond bit capable of being salvaged while drilling |
| CN115874951A (en) * | 2022-12-20 | 2023-03-31 | 石家庄钻之峰工具制造有限公司 | Method for manufacturing diamond drill bit |
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| CN117188979A (en) | 2023-12-08 |
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