CN104607632A - Cutter head tire casing for mining bit - Google Patents
Cutter head tire casing for mining bit Download PDFInfo
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- CN104607632A CN104607632A CN201510094355.6A CN201510094355A CN104607632A CN 104607632 A CN104607632 A CN 104607632A CN 201510094355 A CN201510094355 A CN 201510094355A CN 104607632 A CN104607632 A CN 104607632A
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Abstract
The invention belongs to the technical field of mechanical processing, and discloses a mining bit. The mining bit consists of a cutter head and a basal body, wherein the cutter body is prepared from the following components: 100-120 parts of nickel powder, 85-90 parts of barium titanate powder, 70-75 parts of tungsten powder , 69-72 parts of silicon nitride powder, 65-68 parts of chrome carbide powder, 50-55 parts of aluminum oxide powder, 45-48 parts of chromium powder, 30-32 parts of copper powder, 25-28 parts of tungsten carbide powder, 20-22 parts of titanium carbide powder, 5-8 parts of water glass and 2-3 parts of silica gel. The invention further discloses a bit tire casing. The bit prepared from the tire casing disclosed by the invention has the advantages of better bending strength, better impact toughness and higher wearing ratio.
Description
Technical field
The invention belongs to mechanical material manufacture field, relate to a kind of cutter head carcass of drill bit of digging up mine.
Background technology
Mining is in the earth's crust or the technology of earth's surface exploit mineral resources and science, refers generally to the exploitation of metal or nonmetal depdosit.Mining industry is a kind of important raw material extractive industry, and if metallic ore is the primary raw material of metallurgical industry, non-metallic ore is industrial chemicals and construction material, and coal and oil are the important energy.Most ore need through beneficiation enrichment, can as the raw material of industry.
At present, in mining industry, most of mining site all uses PDC drill bit, and along with the development of composite sheet technology and drilling technology, this trend will continue.PDC drill bit (Polycrystalline Diamond Compact bit) is the abbreviation of polycrystalline diamond compact bit, is a kind of drilling tool that geological drilling industry is commonly used.PDC drill bit is mainly divided into steel body formula PDC drill bit and matrix-type PDC drill bit.Steel body formula PDC drill bit is shaped by nickel, chromium, molybdenum alloy machining.Hole on bit body after Overheating Treatment, by man-made polycrystalline diamond composite sheet press-in (tight fit) bit body, by column tungsten carbide gauge.Matrix-type PDC drill bit is a kind of chipping type bit be welded on by brazing mode by diamond compact on bit matrix.Matrix drill bits tungsten-carbide powder sintering forms, and with artificial PCD compacts brazing on tungsten carbide matrix, uses natural diamond gage.There are respective pluses and minuses in two kinds of drill bits, tyre case PDC drill bit wearability is good, its application stratum also main competent bed in deep, but tyre case PDC bit body material hardness is not high and bending strength is poor, cause can only adopting thicker scraper during drill bit design, to strengthen the impact resistance of bit, avoid the generation of the pernicious drilling failures such as disconnected scraper.Steel body PDC drill bit adopts high strength alloy steel to process, and intensity is high, although have employed the techniques such as surface overlaying to strengthen, compares with matrix drill bits, and the abrasive resistance that still seems is not enough.Therefore, if a kind of drill bit can be prepared, and there is good anti-wear performance, bending strength, and there is higher hardness, and without the need to using scraper, and market potential widely will be possessed.
Chinese invention patent CN201110433249 discloses a kind of polycrystal diamond complex sheet drill blank bits powder, and its carcass prepared is enhanced in bending strength and impact flexibility, but anti-wear performance is inadequate.Tyre case PDC drill bit prepared by prior art generally can not have both various advantage, and better, often anti-wear performance is inadequate for bending strength and impact flexibility; And anti-wear performance good tyre case PDC drill bit often bending strength and impact flexibility poor.
How carrying out novelty improvement to matrix drill bits, improving the bending strength of carcass, impact flexibility and wear resistance ratio is the technological deficiency that prior art needs to overcome.
Summary of the invention
In order to overcome the technology barrier that PDC drill bit in prior art exists, the present invention on the basis of existing technology, has attempted plurality of raw materials and pulp furnish, has finally prepared a kind of performance and preferably to have dug up mine drill bit.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A kind of mining drill bit, formed by cutter head and matrix combination, described cutter head is prepared from by the raw material of following weight portion;
Nickel powder 100-120 part, barium titanate powder 85-90 part, tungsten powder 70-75 part, silicon nitride powder 69-72 part, carbonization chromium powder 65-68 part, alumina powder 50-55 part, chromium powder 45-48 part, copper powder 30-32 part, tungsten carbide powder 25-28 part, carbonized titanium powder 20-22 part, waterglass (preferred sodium silicate, modulus n is 2.6) 5-8 part, silica gel 2-3 part;
The particle diameter of described nickel powder, barium titanate powder, tungsten powder, silicon nitride powder, carbonization chromium powder, alumina powder, chromium powder, copper powder, tungsten carbide powder and carbonized titanium powder is all greater than 500 orders; The preferred sodium silicate of waterglass, modulus n is 2.6; The pore volume of described silica gel is 0.6-0.8ml/g, and average pore size is 4.5-7.0nm, and specific surface is 450-650m
2/ g.
The preparation method of described cutter head comprises the steps:
1) above-mentioned each raw material for standby is taken according to weight portion;
2) nickel powder, barium titanate powder, tungsten powder, silicon nitride powder, carbonization chromium powder, alumina powder, chromium powder, copper powder, tungsten carbide powder and carbonized titanium powder are put in mixer, stir and obtain mixture A;
3) by step 2) the mixture A that obtains puts in reactor, and add waterglass subsequently, interpolation limit, limit is stirred, and mixing time is 5 minutes, obtains mixture B, and the temperature controlling reactor is 200 DEG C;
4) temperature of reactor is reduced to 25 DEG C, then in reactor, adds silica gel, stir, obtain mixture C;
5) then mixture C step 4) obtained installs in graphite jig, then puts in high temperature sintering furnace and sinters, and the temperature of high temperature sintering furnace is 1200 DEG C, and sintering time is 40min;
6) taken out by graphite jig, be cooled to 25 DEG C, depanning obtains carcass, finally carcass is processed into cutter head, is welded on matrix and get final product.
The invention also discloses the bit matrix prepared according to the method described above.
The beneficial effect that the present invention obtains:
Drill bit of the present invention can be applicable to the exploitation in various mine, and it is enhanced at bending strength, ballistic work, and wear resistance ratio also reaches higher parameter;
The various raw materials that the present invention adopts hardness higher, reasonable compatibility combines, and substantially increases mechanical strength;
The present invention adopts waterglass and silica gel for bonding anti-wear agent, its special molecular structure and aperture can with each raw metal connected embedding to together with, enhance anti-wear performance;
Preparation method's simple possible of the present invention, can large-scale industrial production, possesses good market application foreground.
Detailed description of the invention
Below employing specific embodiment is further explained the present invention, but should not regards the restriction to initiative spirit of the present invention as.
Embodiment 1
A kind of mining drill bit, formed by cutter head and matrix combination, described cutter head is prepared from by the raw material of following weight portion;
Nickel powder 100 parts, barium titanate powder 85 parts, tungsten powder 70 parts, silicon nitride powder 69 parts, carbonization chromium powder 65 parts, alumina powder 50 parts, chromium powder 45 parts, copper powder 30 parts, tungsten carbide powder 25 parts, carbonized titanium powder 20 parts, sodium silicate 5 parts, 2 parts, silica gel;
The particle diameter of described nickel powder, barium titanate powder, tungsten powder, silicon nitride powder, carbonization chromium powder, alumina powder, chromium powder, copper powder, tungsten carbide powder and carbonized titanium powder is all greater than 500 orders; Sodium silicate modulus n is 2.6;
The preparation method of described cutter head comprises the steps:
1) above-mentioned each raw material for standby is taken according to weight portion;
2) nickel powder, barium titanate powder, tungsten powder, silicon nitride powder, carbonization chromium powder, alumina powder, chromium powder, copper powder, tungsten carbide powder and carbonized titanium powder are put in mixer, stir and obtain mixture A;
3) by step 2) the mixture A that obtains puts in reactor, and add sodium silicate subsequently, interpolation limit, limit is stirred, and mixing time is 5 minutes, obtains mixture B, and the temperature controlling reactor is 200 DEG C;
4) temperature of reactor is reduced to 25 DEG C, then in reactor, adds silica gel, stir, obtain mixture C;
5) then mixture C step 4) obtained installs in graphite jig, then puts in high temperature sintering furnace and sinters, and the temperature of high temperature sintering furnace is 1200 DEG C, and sintering time is 40min;
6) taken out by graphite jig, be cooled to 25 DEG C, depanning obtains carcass, finally carcass is processed into cutter head, is welded on matrix and get final product.
Embodiment 2
To dig up mine the cutter head carcass of drill bit, be prepared from by the raw material of following weight portion;
Nickel powder 100 parts, barium titanate powder 85 parts, tungsten powder 70 parts, silicon nitride powder 69 parts, carbonization chromium powder 65 parts, alumina powder 50 parts, chromium powder 45 parts, copper powder 30 parts, tungsten carbide powder 25 parts, carbonized titanium powder 20 parts, sodium silicate 5 parts, 2 parts, silica gel;
The particle diameter of described nickel powder, barium titanate powder, tungsten powder, silicon nitride powder, carbonization chromium powder, alumina powder, chromium powder, copper powder, tungsten carbide powder and carbonized titanium powder is all greater than 500 orders; The modulus n of sodium silicate is 2.6; The pore volume of described silica gel is 0.6-0.8ml/g, and average pore size is 4.5-7.0nm, and specific surface is 450-650m
2/ g.
The preparation method of described carcass comprises the steps:
1) above-mentioned each raw material for standby is taken according to weight portion;
2) nickel powder, barium titanate powder, tungsten powder, silicon nitride powder, carbonization chromium powder, alumina powder, chromium powder, copper powder, tungsten carbide powder and carbonized titanium powder are put in mixer, stir and obtain mixture A;
3) by step 2) the mixture A that obtains puts in reactor, and add waterglass subsequently, interpolation limit, limit is stirred, and mixing time is 5 minutes, obtains mixture B, and the temperature controlling reactor is 200 DEG C;
4) temperature of reactor is reduced to 25 DEG C, then in reactor, adds silica gel, stir, obtain mixture C;
5) then mixture C step 4) obtained installs in graphite jig, then puts in high temperature sintering furnace and sinters, and the temperature of high temperature sintering furnace is 1200 DEG C, and sintering time is 40min;
6) taken out by graphite jig, be cooled to 25 DEG C, depanning obtains carcass.
Embodiment 3
The performance test of bit matrix material of the present invention: control group adopts the polycrystal diamond complex sheet drill blank bits prepared according to CN201110433249 embodiment 2 method; Experimental group is carcass prepared by the embodiment of the present invention 2.
By detecting the bending strength (employing universal hydraulic testing machine) of carcass, impact work and wear resistance ratio; Wherein wear resistance ratio testing experiment, adopt emery wheel friction carcass, manual time-keeping 180 seconds, detects the quality of emery wheel and carcass, determines wear resistance ratio.Carcass all adopts 5mm × 5mm × 5mm size; Emery wheel is silicon carbide grinding wheel.Concrete outcome is see table 1:
Table 1
| Type | Bending strength/MPa | Ballistic work (J/cm 2) | Emery wheel weightlessness/g | Carcass weightlessness/g | Wear resistance ratio |
| Experimental group | 1316 | 15.6 | 4.12 | 0.46 | 8.9 |
| Control group | 902 | 11.9 | 2.49 | 0.71 | 3.5 |
Conclusion: be it is found that by comparand, the bending strength of bit matrix, ballistic work and wear resistance ratio etc. prepared by the embodiment of the present invention 2 are all better than the bit matrix of control group, especially at ball milling than performance there being larger improvement, greatly reduce wastage of material, saved cost.
Finally, it is also to be noted that what enumerate above is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (2)
1. dig up mine the cutter head carcass of drill bit, it is prepared from by the raw material of following weight portion;
Nickel powder 100 parts, barium titanate powder 85 parts, tungsten powder 70 parts, silicon nitride powder 69 parts, carbonization chromium powder 65 parts, alumina powder 50 parts, chromium powder 45 parts, copper powder 30 parts, tungsten carbide powder 25 parts, carbonized titanium powder 20 parts, sodium silicate 5 parts, 2 parts, silica gel;
The preparation method of described carcass comprises the steps:
1) above-mentioned each raw material for standby is taken according to weight portion;
2) nickel powder, barium titanate powder, tungsten powder, silicon nitride powder, carbonization chromium powder, alumina powder, chromium powder, copper powder, tungsten carbide powder and carbonized titanium powder are put in mixer, stir and obtain mixture A;
3) by step 2) the mixture A that obtains puts in reactor, and add waterglass subsequently, interpolation limit, limit is stirred, and mixing time is 5 minutes, obtains mixture B, and the temperature controlling reactor is 200 DEG C;
4) temperature of reactor is reduced to 25 DEG C, then in reactor, adds silica gel, stir, obtain mixture C;
5) then mixture C step 4) obtained installs in graphite jig, then puts in high temperature sintering furnace and sinters, and the temperature of high temperature sintering furnace is 1200 DEG C, and sintering time is 40min;
6) taken out by graphite jig, be cooled to 25 DEG C, depanning obtains carcass.
2. the carcass as described in claim 1-3, is characterized in that, the particle diameter of described nickel powder, barium titanate powder, tungsten powder, silicon nitride powder, carbonization chromium powder, alumina powder, chromium powder, copper powder, tungsten carbide powder and carbonized titanium powder is all greater than 500 orders; The pore volume of described silica gel is 0.6-0.8ml/g, and average pore size is 4.5-7.0nm, and specific surface is 450-650m
2/ g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094355.6A CN104607632A (en) | 2014-01-01 | 2014-01-01 | Cutter head tire casing for mining bit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094355.6A CN104607632A (en) | 2014-01-01 | 2014-01-01 | Cutter head tire casing for mining bit |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410000084.9A Division CN103691961B (en) | 2014-01-01 | 2014-01-01 | Alloy drill bit for mining |
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| CN104607632A true CN104607632A (en) | 2015-05-13 |
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|---|---|---|---|
| CN201510094355.6A Pending CN104607632A (en) | 2014-01-01 | 2014-01-01 | Cutter head tire casing for mining bit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598457A (en) * | 2016-02-17 | 2016-05-25 | 张霞 | Scalpel blade and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5541006A (en) * | 1994-12-23 | 1996-07-30 | Kennametal Inc. | Method of making composite cermet articles and the articles |
| US5806934A (en) * | 1994-12-23 | 1998-09-15 | Kennametal Inc. | Method of using composite cermet articles |
| US6176888B1 (en) * | 1996-09-03 | 2001-01-23 | Hilti Aktiengesellschaft | Composite cutting body, containing diamond particles and methods for its production |
| CN102382997A (en) * | 2011-10-24 | 2012-03-21 | 中南大学 | Method for preparing WC-Co cemented carbide through microwave sintering |
| CN103170921A (en) * | 2013-04-08 | 2013-06-26 | 天津大学 | Diamond grinding tool use for grinding hard alloy cutters |
-
2014
- 2014-01-01 CN CN201510094355.6A patent/CN104607632A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5541006A (en) * | 1994-12-23 | 1996-07-30 | Kennametal Inc. | Method of making composite cermet articles and the articles |
| US5806934A (en) * | 1994-12-23 | 1998-09-15 | Kennametal Inc. | Method of using composite cermet articles |
| US6176888B1 (en) * | 1996-09-03 | 2001-01-23 | Hilti Aktiengesellschaft | Composite cutting body, containing diamond particles and methods for its production |
| CN102382997A (en) * | 2011-10-24 | 2012-03-21 | 中南大学 | Method for preparing WC-Co cemented carbide through microwave sintering |
| CN103170921A (en) * | 2013-04-08 | 2013-06-26 | 天津大学 | Diamond grinding tool use for grinding hard alloy cutters |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598457A (en) * | 2016-02-17 | 2016-05-25 | 张霞 | Scalpel blade and preparation method thereof |
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Application publication date: 20150513 |