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Diamond drilling bit with a plurality of sets of serrated structures automatically formed by weakened matrix with order positioning and manufacture process

A diamond drill bit and manufacturing process technology, used in drill bits, metal processing equipment, earth-moving drilling, etc., can solve problems such as no footage, and achieve the effect of reducing energy consumption and improving rock crushing efficiency

Inactive Publication Date: 2018-10-02
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a drill bit that directly breaks rocks, its service life and efficiency still need to be improved in the face of ordinary rock formations. However, for extreme rock formations, such as hard, dense and weakly abrasive formations, the problem of insufficient footage often occurs, and an ideal and effective solution has not been found.

Method used

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  • Diamond drilling bit with a plurality of sets of serrated structures automatically formed by weakened matrix with order positioning and manufacture process
  • Diamond drilling bit with a plurality of sets of serrated structures automatically formed by weakened matrix with order positioning and manufacture process

Examples

Experimental program
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Effect test

Embodiment 1

[0019] refer to figure 1 and figure 2 , orderly positioning and weakening the carcass to form multiple groups of serrated diamond drill bits are composed of drill teeth and steel body 8 and so on. The drill tooth is assembled and sintered by the working layer sheet 1 and the intermediate layer sheet 2 at intervals. The working layer sheet 1 is distributed with diamond particles 4 and weakened matrix particles 3 arranged in an orderly manner; the weakened matrix particles fall off when the drill bit is working Dimples 5 are formed, diamond particles protrude, and the intermediate layer is worn out in advance to form grooves 6, and multiple sets of serrated working lip surfaces 7 are automatically formed. The drill teeth and the steel body 8 are fused as a whole through heating.

[0020] The outer diameter / inner diameter of the drill bit is Φ76 / 49mm, the size of the working layer sheet of the drill bit matrix: length × height × thickness = (22~12) mm × 12mm × 0.3mm; the size ...

Embodiment 2

[0031] refer to figure 1 and figure 2 , orderly positioning and weakening the carcass to form multiple groups of serrated diamond drill bits are composed of drill teeth and steel body 8 and so on. The drill teeth are assembled and sintered by the working layer sheet 1 and the intermediate layer sheet 2 at intervals. The working layer sheet 1 is distributed with diamond particles 4 and weakened matrix particles 3 arranged in an orderly manner; the weakened matrix particles fall off when the drill bit is working Dimples 5 are formed, diamond particles protrude, and the intermediate layer is worn out in advance to form grooves 6, and multiple sets of serrated working lip surfaces 7 are automatically formed. The drill teeth and the steel body 8 are fused as a whole through heating.

[0032] The outer diameter / inner diameter of the drill bit is Φ101.6 / 84mm, the size of the working layer sheet of the drill body: length × height × thickness = (25~19.5) mm × 14mm × 0.4mm; the size ...

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Abstract

The invention discloses a diamond drilling bit with a plurality of sets of serrated structures automatically formed by weakened matrix with order positioning. The diamond drilling bit with a pluralityof sets of serrated structures automatically drill teeth formed by weakened matrix with order positioning comprises drill teeth and a steel body. The drill teeth are composed by working layer sheetswith the thickness of 0.2-1.5mm and interlayer sheets with thickness of 0.2-1.5mm. The working layer sheets are made from metal powder, tungsten carbide powder and diamond, and the interlayer sheets are made from graphite powder, ceramic powder and copper-tin alloy powder. Organic solvents are separately added for preparing slurry materials, and the slurry materials are poured to form a mold, andafter vacuum baking and low-temperature sintering, a sheet blank is formed; the weakened matrix particles are positioned and arranged orderly according to the designed concentration and are embedded in the predetermined position of the working layer sheet blank; and the working layer sheets and the interlayer sheets are alternately packed into a graphite mold at intervals to form the drill teeth,then the steel body is installed, and after hot pressed sintering, the drilling bit is formed. During the drilling process of the diamond drilling bit, a pie appears in a working lip face, at the sametime, the interlayer sheets are subjected to advanced abrasion, then a groove appears, and a working face of the drilling bit form a serrated shape; and during drilling, the exposure is fast, the efficiency is high, and the energy consumption is low.

Description

technical field [0001] The invention mainly belongs to the field of powder metallurgy and drilling engineering, uses hot pressing sintering technology, implants weakened carcass particles according to an orderly positioning distribution structure, and uses mechanical processing means by means of sheet cross assembly, especially involving multiple groups of serrated diamond drill bits and its production process. Background technique [0002] With the optimization of drilling equipment and the advancement of drilling technology, many complex formation drilling problems have been well solved. However, as a drill bit that directly breaks rocks, its service life and efficiency still need to be improved in the face of ordinary rock formations. However, for extreme rock formations, such as hard, dense and weakly abrasive formations, there are often problems with the lack of footage, and an ideal and effective solution has not been found. Changing the rock breaking mechanism of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/46B22F1/00B22F3/22B22F5/00
CPCE21B10/46B22F3/22B22F5/00B22F2005/001B22F1/107
Inventor 张绍和周侯吴晶晶王佳亮
Owner CENT SOUTH UNIV
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