CN201232523Y - High wind pressure bore bit - Google Patents
High wind pressure bore bit Download PDFInfo
- Publication number
- CN201232523Y CN201232523Y CNU2008200267652U CN200820026765U CN201232523Y CN 201232523 Y CN201232523 Y CN 201232523Y CN U2008200267652 U CNU2008200267652 U CN U2008200267652U CN 200820026765 U CN200820026765 U CN 200820026765U CN 201232523 Y CN201232523 Y CN 201232523Y
- Authority
- CN
- China
- Prior art keywords
- bore bit
- steel
- bore
- bit body
- improve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Earth Drilling (AREA)
Abstract
The utility model discloses a high air pressure drill bit which comprises a main body; the outer surface of the main body is provided with a hardened layer which can improve the surface compressive stress of the drill bit, thereby improving the fatigue property and the wear resistance of the drill bit. The drill bit has long service life and is not easy to be broken in operation.
Description
Technical field
The utility model relates to the parts on a kind of rock drilling machine, is the high blast bore bit of using on a kind of high blast rig.
Background technology
Bore bit is the instrument that rig is used for bore operation, generally adopt the drilling tool special-purpose steel to form through quenching, tempering common process Processing of Preparation, as the high blast bore bit that adopts drilling tool special-purpose steel FF-710 steel to form fully, because the service condition very severe of bore bit, be subjected to the frequent impact of piston and the anti-force and the wearing and tearing of rock, be easy to generate fatigue damage, cause in the construction operation process, bore bit produces fracture, has influenced the application life of bore bit and the efficient of construction.
The utility model content
Technical problem to be solved in the utility model has provided a kind of long service life, the high blast bore bit of easy fracture not in the operation.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of high blast bore bit, comprise the bore bit body, and the external surface of described bore bit body is provided with one deck can improve the bore bit bearing stress to improve the hardened layer of bore bit anti-fatigue performance.
The bore bit body that described bore bit body is the FF-710 steel, described hardened layer are the comentation hardening layer of FF-710 steel.
The high blast bore bit of technique scheme, owing to be to have adopted external surface at the bore bit body to be provided with one deck can improve the bore bit bearing stress to improve the hardened layer of bore bit anti-fatigue performance, improved the compressive stress of bore bit body, thereby reduced the fatigue damage of bore bit, avoid bore bit early fracture phenomenon, prolonged the application life of bore bit.By the bore bit body is the FF-710 steel bore bit body of FF-710 steel, hardened layer is the mode of the comentation hardening layer of FF-710 steel, improve the hardness of bore bit cementation zone, produce compressive stress, improved the anti-fatigue performance of bore bit, thereby reduced the fracture of bore bit, prolonged the application life of bore bit.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is further described.
Accompanying drawing is the structural representation of the high blast bore bit of the utility model.
The specific embodiment
As shown in drawings, a kind of high blast bore bit, comprise bore bit body 1, be provided with air channel 11 in bore bit body 1 inside, be provided with the wind hole in carbide button 12 and connection air channel 11 on bore bit body 1 head end surface, row's powder skewed slot that the wind hole is provided with by bore bit body 1 head end surface is communicated with the sludge groove 13 that bore bit body 1 head end outer surface is provided with; External surface at bore bit body 1 is provided with one deck hardened layer 2, and hardened layer 2 can produce compressive stress, thereby has improved the bore bit anti-fatigue performance, has reduced the fracture of bore bit, has prolonged the application life of bore bit.And bore bit body 1 can adopt drilling tool special-purpose steel FF-710 steel is that material is made bore bit, so that bore bit has good anti-fatigue performance, and the chemical composition of FF-710 steel such as following table: (%)
| C | Si | Mn | Cr | Ni | Mo | P | S |
| 0.21～ 0.25 | 1.10～ 1.65 | 1.10～ 1.30 | 0.30～ 0.50 | 1.65～ 2.00 | 0.1～ 0.2 | ≤0.030 | ≤0.030 |
Hardened layer 2 adopts the FF-710 steel is carried out Carburization Treatment, carry out Carburization Treatment at 920 ℃ of bore bit bodies 1 that the FF-710 steel is made, form one deck carburized layer, 840 ℃ of left and right sides Quenching Treatment, about 200 ℃, carry out temper then, to obtain comentation hardening layer with good rigid structure, reach and improve bore bit hardness, make the bore bit top layer have the purpose of high rigidity and abrasion resistance, the bore bit surface produces compressive stress, improve the anti-fatigue performance of bore bit, thereby reduced the fracture of bore bit, prolonged the application life of bore bit.
Claims (2)
1, a kind of high blast bore bit comprises bore bit body (1), it is characterized in that: the external surface of described bore bit body (1) is provided with one deck can improve the bore bit bearing stress to improve the hardened layer (2) of bore bit fatigue behaviour.
2, a kind of high blast bore bit as claimed in claim 1, it is characterized in that: described bore bit body (1) is the bore bit body of FF-710 steel, described hardened layer (2) is the comentation hardening layer of FF-710 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200267652U CN201232523Y (en) | 2008-08-05 | 2008-08-05 | High wind pressure bore bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200267652U CN201232523Y (en) | 2008-08-05 | 2008-08-05 | High wind pressure bore bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201232523Y true CN201232523Y (en) | 2009-05-06 |
Family
ID=40618900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200267652U Expired - Fee Related CN201232523Y (en) | 2008-08-05 | 2008-08-05 | High wind pressure bore bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201232523Y (en) |
-
2008
- 2008-08-05 CN CNU2008200267652U patent/CN201232523Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Weifang Sino Swiss Construction Machinery Co., Ltd. Assignor: Li Baoshun Contract fulfillment period: 2009.8.1 to 2015.8.1 Contract record no.: 2009370000438 Denomination of utility model: High wind pressure bore bit Granted publication date: 20090506 License type: Exclusive license Record date: 20091015 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.8.1 TO 2015.8.1; CHANGE OF CONTRACT Name of requester: WEIFANG ZHONGRUI ENGINEERING MACHINERY CO., LTD. Effective date: 20091015 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20110805 |