CN2285177Y

CN2285177Y - Electroplating lamination diamond bit

Info

Publication number: CN2285177Y
Application number: CN 97240868
Authority: CN
Inventors: 姚邹; 王士强
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-05-28
Filing date: 1997-05-28
Publication date: 1998-07-01
Anticipated expiration: 2007-05-28

Abstract

The utility model relates to an electroplating lamination diamond bit which is composed of the bottom lip 1 of a steel body and an impregnated layer 2, wherein, the impregnated layer 2 is covered on the bottom lip 1. The electroplating lamination diamond bit is characterized in that the impregnated layer 2 is formed by a plurality of impregnated thin layers 3 which are laminated. The electroplating lamination diamond bit has the manufacturing process that 1 to 7 teeth 4 can be distributed on the end surface of the bottom lip 1, and then the diamond impregnated thin layers 3 are plated on the teeth 4 by 2 to 10 times. The utility model has the advantages of long life time and high drilling efficiency, and is suitable for the drilling for different strata.

Description

Electroplate the lamination diamond bit

The utility model relates to a kind of geological drilling tools, belongs to B23P.

As everybody knows, drill bit is by impregnated layer or claims working lining grinding rock to reach the purpose of creeping into.The stratum is in layer to superpose, and every layer thickness, hardness are all different, so drill bit need adapt to the requirement of Different Strata hardness.The stratum is crept into drill bit and roughly can be divided into two classes at present, and a class is the powder metallurgy manufacturing, as the infusion process of colding pressing, manufacturings such as hot pressing sintering method, it is accurate to have a bit size with the diamond bit of powder metallurgy manufacturing, and it is effective to protect the footpath, but to the bad adaptability of Different Strata.Another kind is exactly the cold galvanising diamond bit, plates impregnated layer (working lining) on end lip, and its low cost of manufacture is wear-resisting, shock-resistant.But this bit gauge protection weak effect can not adapt to the requirement that creep on all kinds of stratum equally, and these drill bit working linings all is the diamond layers that contain of the about 2～5mm same material of thickness, is creeping into to go into, and equally distributed on working face is the material of same rigidity.Its common shortcoming is can not adapt to Different Strata to creep into, and service life is shorter.

The utility model designs a kind of lamination diamond bit at problems of the prior art.

The utility model by the steel body at the bottom of lip 1, impregnated layer 2 forms, impregnated layer 2 covers on the end lip 1, feature is: impregnated layer 2 is formed by stacking by the impregnated thin layer 3 of multilayer waveform.Each waveform thin layer 3 adopts the material or the different material of diamond content of different hardness to make.Difference of hardness between the general adjacent thin layer 3 is HRC5～HRC15, and thin layer 3 numbers of plies of forming impregnated layer 2 are 2～10 layers, every bed thickness 0.2mm～2.5mm, impregnated layer 2 thickness 3mm～6mm.To form corrugated purpose in order reaching, can to have purpose to be plated to waveform when electroplating, but the processing cost height, also can adopt a plurality of teeth 4 of interlaced arrangement on 1 on end lip, gradation plates thin layer 3 in different coating baths then.Tooth 4 can adopt following method to arrange, staggeredly on end lip 1 bores 1～7 hole, is embedded in tooth 4 then in the hole, and tooth 4 can also can be sheet shape tooth such as alloy sheet for post tooth such as hemi-spherical ended shape insert, chisel teeth, awl tooth etc., and tooth top is than end lip 1 outstanding 0.2mm～1.5mm.The tooth footpath is according to the corresponding selection of drill bit bore.

The utility model adopts multilayer waveform thin layer 3 to be overlapped into impregnated layer 2, the impregnated matrix alloy that on same working face, has different hardness when creeping into, thereby can adapt to different stratum creeps into, because staggered cloth tooth 4, thin layer 3 is gone up vertical, horizontal in impregnated layer 2 cross section (operative end surface) and is waveform, the grinding stratum is effective, improves drilling efficiency and improves service life.

Inserted tooth 4 in the end of the present utility model lip 1 has increased the contact-making surface of impregnated layer 2 and end lip 1, has strengthened the adhesion between impregnated layer 2 and the end lip 1, makes impregnated layer 2 difficult drop-off in drilling process, improves bit life.

The utility model can also increase one deck glomerocryst layer 5 and tungsten carbide mole 6. its manufacture processes as required and may be summarized to be in end lip 1 usefulness powder metallurgy method (as pressure sintering) and make the total glomerocryst 5 of a circle and strengthen protecting accurate in size diamondite mole 6 directly between impregnated layer 2 and end lip 1, mole 6 labial surfaces form chondritic tooth 4 by mould heat pressure, adopt the cold galvanising method to plate the diamond impregnated layer 3 of different-thickness, different hardness respectively then, in impregnated thin layer 3, be evenly equipped with diamond.

Fig. 1 the utility model structural representation

The structural representation of Fig. 2 the utility model embodiment 1

The end face cut-away view of Fig. 3 the utility model embodiment 1

1. end lip; 2. impregnated layer; 3. impregnated thin layer; 4. tooth; 5. glomerocryst

Embodiment 1: according to the drill bit bore, this practicality is bored 1 or 2 or 3 or 5 hole with novel on 1 on end lip, be distributed into tooth 4 in the hole, tooth 4 protrudes 0.2mm or 0.5mm or 0.7mm or 1.0mm or 1.2mm or 1.5mm, divide the waveform diamond impregnated layer 3 that is plated to different-thickness for 2 or 3 or 4 or 6 or 7 times then, difference of hardness between the adjacent impregnated thin layer 3 is HRC5～HRC15, and every thin layer 3 thick 0.2mm～2.5mm are furnished with the different content diamond in the thin layer 3.

Embodiment 2: as required, the utility model is made glomerocryst layer 5 and diamondite mole 6 with pressure sintering on end lip 1 on 1 on end lip, and extrude 2～6 teeth 4, guarantee tooth 4 projectioies, adopt the cold galvanising method to divide then and plate diamond impregnated layer 3 3～7 times, be evenly equipped with diamond in the impregnated thin layer 3, the difference of hardness between the adjacent thin layer 3 is HRC5～HRC15.

The utility model is mainly used in the manufacturing drill bit.Do suitable improvement and also can be used for saw blade and bore bit manufacturing.

Claims

1. electroplate the lamination diamond bit, is made up of lip 1, impregnated layer 2 at the bottom of the steel body, impregnated layer 2 covers at the bottom of the steel body on the lip 1, and it is characterized in that: impregnated layer 2 is to be formed by stacking by multilayer waveform diamond impregnated layer 3.

2. a kind of plating lamination diamond bit as claimed in claim 1 is characterized in that the thin layer 3 of forming impregnated layer 2 can be 2～10 layers.

3. plating lamination diamond bit as claimed in claim 1 or 2 is characterized in that 1～7 tooth 4 of interlaced arrangement on end lip 1 end face.

4. plating lamination diamond bit as claimed in claim 3 is characterized in that: be drilled to 1～7 hole at end lip 1, tumble in tooth 4, adopt the cold galvanising method to divide then and plate diamond impregnated layer 3 2～10 times.

5. plating lamination diamond bit as claimed in claim 3, it is characterized in that: the difference of hardness between the adjacent thin layer 3 is HRC5～HRC15, thin layer 3 thickness are 0.2～2.5mm, and tooth 4 is with respect to end lip 1 projection 0.2～1.5mm, and tooth 4 can be post tooth such as ball tooth, chisel teeth or sheet shape tooth.