CN102974825A - Manufacturing method of drill bit - Google Patents
Manufacturing method of drill bit Download PDFInfo
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- CN102974825A CN102974825A CN2012104934054A CN201210493405A CN102974825A CN 102974825 A CN102974825 A CN 102974825A CN 2012104934054 A CN2012104934054 A CN 2012104934054A CN 201210493405 A CN201210493405 A CN 201210493405A CN 102974825 A CN102974825 A CN 102974825A
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- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention relates to a manufacturing method of a drill bit. The manufacturing method comprises the steps of proportioning materials, mixing the materials, pressing, sintering, quenching and post-processing. The drill bit manufactured through the manufacturing method disclosed by the invention is molded at one time, the internal organizational structure of the drill bit is even, and the production efficiency is high.
Description
Technical field
The invention belongs to field of power tools, refer to especially a kind of electric drill manufacture method of drill bit.
Background technology
The drill bit that uses in the existing technology comprises two parts, and one is pedestal and the drill body that connects for the power set with electric drill.For convenient replacing to the outside and drill bit better keep connecting with the power set of electric drill, the diameter of pedestal is all greater than the diameter of drill bit.Such structure during fabrication, bring difficulty when particularly drill body being cut, in order to improve the manufacturing efficient of drill bit, the processing method of now using branch to make, the pedestal and the drill body that are about to drill bit are processed step by step, and then by welding and post-processed.Although and this processing method because the high temperature when welding pedestal and drill body can have influence on the institutional framework of drill bit alloy, and causes fracture when stressed with the method efficient raising of former one processing.
Summary of the invention
The manufacture method that the purpose of this invention is to provide a kind of drill bit by the technical program, can realize the time processing moulding of drill bit, has reduced production process and has improved production efficiency.
The present invention is achieved by the following technical solutions:
A kind of manufacture method of drill bit may further comprise the steps:
Batching, its composition of material that the production drill bit is used is by weight percentage, the manganese of the tungsten of the chromium of the carbon of 2.0-2.2%, the silicon of 0.5-0.65%, 3.8-4.0%, the vanadium of 3-3.5%, 2-2.5%, the niobium of 0.001-0.0015%, 1.0-1.2%, the copper of 0.1-0.3%, the boron of 0.3-0.5%, the zirconium of 0.03-0.05%, surplus is iron and inevitable impurity;
Batch mixing mixes the material of determining prescription, and then grinds into the powder that grain diameter on average is no more than 100 microns, and preferably grain diameter on average is no more than the powder of 10-20 micron;
Compacting, the mode that adopts one or many to fill, the pressure with 600-750MPa in mould is suppressed 10-60 moulding second;
Sintering, at first under 600-800 ℃ of temperature presintering 1-2 hour, and then mould is interior with hot shaping under the 150-200MPa pressure, again in 1250-1350 ℃ of lower sintering and be incubated 1-3 hour, then divide the two-stage cooling, the cooling rate of phase I remains on 5-8 ℃/minute, and tempering is 1-3 hour when drop in temperature arrives 400-450 ℃, then naturally cool to 200 ± 20 ℃, obtain blank bit;
Quench, above-mentioned base substrate be incubated 2 hours in 780-800 ℃ of glowing furnace, carry out Quenching Treatment, adopt to naturally cool to room temperature after being incubated 2-4 hour behind 230 ± 20 ℃ of constant temperature salt bath quenching to 230 ± 20 ℃, obtain drill blank;
Above-mentioned semi-finished product are finished processing through operations such as later stage polishing and surface treatments.
The beneficial effect that the present invention compares with prior art is:
According to the drill bit that the technical program is produced, one-shot forming, and drill bit inner tissue even structure, and production efficiency is high.
The specific embodiment
Below come by specific embodiment that the present invention is described in detail, should be understood that these embodiment only can be used for explaining the present invention and can not be used for explaining is limitation of the present invention.
Embodiment 1
A kind of manufacture method of drill bit may further comprise the steps:
Batching, its composition of material that the production drill bit is used is by weight percentage, 2.0% carbon, 0.5% silicon, 3.8% chromium, 3% vanadium, 2% tungsten, 0.001% niobium, 1.0% manganese, 0.1% copper, 0.3% boron, 0.03% zirconium, surplus is iron and inevitable impurity;
Batch mixing mixes the material of determining prescription, and then grinds into the powder that grain diameter on average is no more than 100 microns, and preferably grain diameter on average is no more than the powder of 10-20 micron;
Compacting, the mode that adopts one or many to fill, the pressure with 650MPa in mould is suppressed moulding in 30 seconds;
Sintering, at first presintering 1.5 hours under 600-800 ℃ of temperature, and then mould is interior with hot shaping under the 180MPa pressure, again in 1250-1350 ℃ of lower sintering and be incubated 2 hours, then divide the two-stage cooling, the cooling rate of phase I remains on 5-8 ℃/minute, and tempering is 2 hours when drop in temperature arrives 400-450 ℃, then naturally cool to 200 ± 20 ℃, obtain blank bit;
Quench, above-mentioned base substrate be incubated 2 hours in 780-800 ℃ of glowing furnace, carry out Quenching Treatment, adopt to naturally cool to room temperature after being incubated 3 hours behind 230 ± 20 ℃ of constant temperature salt bath quenching to 230 ± 20 ℃, obtain drill blank;
Above-mentioned semi-finished product are finished processing through operations such as later stage polishing and surface treatments.
Embodiment 2
A kind of manufacture method of drill bit may further comprise the steps:
Batching, its composition of material that the production drill bit is used is by weight percentage, 2.2% carbon, 0.65% silicon, 4.0% chromium, 3.5% vanadium, 2.5% tungsten, 0.0015% niobium, 1.2% manganese, 0.3% copper, 0.5% boron, 0.05% zirconium, surplus is iron and inevitable impurity;
Batch mixing mixes the material of determining prescription, and then grinds into the powder that grain diameter on average is no more than 100 microns, and preferably grain diameter on average is no more than the powder of 10-20 micron;
Compacting, the mode that adopts one or many to fill, the pressure with 700MPa in mould is suppressed moulding in 60 seconds;
Sintering, at first presintering 1.5 hours under 600-800 ℃ of temperature, and then mould is interior with hot shaping under the 200MPa pressure, again in 1250-1350 ℃ of lower sintering and be incubated 2 hours, then divide the two-stage cooling, the cooling rate of phase I remains on 5-8 ℃/minute, and tempering is 2 hours when drop in temperature arrives 400-450 ℃, then naturally cool to 200 ± 20 ℃, obtain blank bit;
Quench, above-mentioned base substrate be incubated 2 hours in 780-800 ℃ of glowing furnace, carry out Quenching Treatment, adopt to naturally cool to room temperature after being incubated 3 hours behind 230 ± 20 ℃ of constant temperature salt bath quenching to 230 ± 20 ℃, obtain drill blank;
Above-mentioned semi-finished product are finished processing through operations such as later stage polishing and surface treatments.
Embodiment 3
A kind of manufacture method of drill bit may further comprise the steps:
Batching, its composition of material that the production drill bit is used is by weight percentage, 2.15% carbon, 0.6% silicon, 3.85% chromium, 3.4% vanadium, 2.31% tungsten, 0.0015% niobium, 1.12% manganese, 0.27% copper, 0.37% boron, 0.042% zirconium, surplus is iron and inevitable impurity;
Batch mixing mixes the material of determining prescription, and then grinds into the powder that grain diameter on average is no more than 100 microns, and preferably grain diameter on average is no more than the powder of 10-20 micron;
Compacting, the mode that adopts one or many to fill, the pressure with 700MPa in mould is suppressed moulding in 60 seconds;
Sintering, at first presintering 2 hours under 600-800 ℃ of temperature, and then mould is interior with hot shaping under the 200MPa pressure, again in 1250-1350 ℃ of lower sintering and be incubated 2 hours, then divide the two-stage cooling, the cooling rate of phase I remains on 5-8 ℃/minute, and tempering is 2 hours when drop in temperature arrives 400-450 ℃, then naturally cool to 200 ± 20 ℃, obtain blank bit;
Quench, above-mentioned base substrate be incubated 2 hours in 780-800 ℃ of glowing furnace, carry out Quenching Treatment, adopt to naturally cool to room temperature after being incubated 3 hours behind 230 ± 20 ℃ of constant temperature salt bath quenching to 230 ± 20 ℃, obtain drill blank;
Above-mentioned semi-finished product are finished processing through operations such as later stage polishing and surface treatments.
Claims (1)
1. the manufacture method of a drill bit is characterized in that: may further comprise the steps:
Batching, its composition of material that the production drill bit is used is by weight percentage, the manganese of the tungsten of the chromium of the carbon of 2.0-2.2%, the silicon of 0.5-0.65%, 3.8-4.0%, the vanadium of 3-3.5%, 2-2.5%, the niobium of 0.001-0.0015%, 1.0-1.2%, the copper of 0.1-0.3%, the boron of 0.3-0.5%, the zirconium of 0.03-0.05%, surplus is iron and inevitable impurity;
Batch mixing mixes the material of determining prescription, and then grinds into the powder that grain diameter on average is no more than 100 microns, and preferably grain diameter on average is no more than the powder of 10-20 micron;
Compacting, the mode that adopts one or many to fill, the pressure with 600-750MPa in mould is suppressed 10-60 moulding second;
Sintering, at first under 600-800 ℃ of temperature presintering 1-2 hour, and then mould is interior with hot shaping under the 150-200MPa pressure, again in 1250-1350 ℃ of lower sintering and be incubated 1-3 hour, then divide the two-stage cooling, the cooling rate of phase I remains on 5-8 ℃/minute, and tempering is 1-3 hour when drop in temperature arrives 400-450 ℃, then naturally cool to 200 ± 20 ℃, obtain blank bit;
Quench, above-mentioned base substrate be incubated 2 hours in 780-800 ℃ of glowing furnace, carry out Quenching Treatment, adopt to naturally cool to room temperature after being incubated 2-4 hour behind 230 ± 20 ℃ of constant temperature salt bath quenching to 230 ± 20 ℃, obtain drill blank;
Above-mentioned semi-finished product are finished processing through operations such as later stage polishing and surface treatments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104934054A CN102974825A (en) | 2012-11-22 | 2012-11-22 | Manufacturing method of drill bit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104934054A CN102974825A (en) | 2012-11-22 | 2012-11-22 | Manufacturing method of drill bit |
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| CN102974825A true CN102974825A (en) | 2013-03-20 |
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| CN2012104934054A Pending CN102974825A (en) | 2012-11-22 | 2012-11-22 | Manufacturing method of drill bit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618736A (en) * | 2016-02-21 | 2016-06-01 | 刘辉 | Reamer bit |
| CN106086687A (en) * | 2016-08-27 | 2016-11-09 | 宁波市鄞州新华仪表电机配件厂 | The preparation method of the sliding bearing that a kind of thermal coefficient of expansion is low |
| CN106498309A (en) * | 2016-11-01 | 2017-03-15 | 安徽恒均粉末冶金科技股份有限公司 | A kind of high optical axis sprocket wheel method for preparing powder metallurgy of thermohardening |
| CN109226772A (en) * | 2018-11-20 | 2019-01-18 | 深圳艾利佳材料科技有限公司 | A kind of hot shaping methods of high-yield strength powder metallurgy product |
| CN113478303A (en) * | 2021-06-07 | 2021-10-08 | 东台升华工具有限公司 | Drill bit production process capable of reducing crystal defects |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139030A (en) * | 1995-06-28 | 1997-01-01 | 苏泉涌 | Powder metallurgical process for producing driller chuck parts |
| WO2004103613A1 (en) * | 2003-05-20 | 2004-12-02 | Sandvik Intellectual Property Ab | An edge-carrying drill body, and a method for the manufacture of the same and a drilling tool comprising such a drill body |
| CN1687473A (en) * | 2005-04-19 | 2005-10-26 | 河源富马硬质合金股份有限公司 | Carbide alloy, carbide bit and manufacturing method thereof |
| CN101144370A (en) * | 2007-10-24 | 2008-03-19 | 中国地质大学（武汉） | Hot pressing high phosphorus iron base diamond drilling bit and preparation method thereof |
| US20090257903A1 (en) * | 2005-09-08 | 2009-10-15 | Stefan Sundin | Powder Metallurgically Manufactured High Speed Steel |
| CN102189257A (en) * | 2010-03-10 | 2011-09-21 | 钟淼芳 | Powder sintering forming method for cutting tool and cutting body thereof |
| CN102744401A (en) * | 2012-07-24 | 2012-10-24 | 王伟德 | Geological mineral exploration device and preparation method thereof |
-
2012
- 2012-11-22 CN CN2012104934054A patent/CN102974825A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139030A (en) * | 1995-06-28 | 1997-01-01 | 苏泉涌 | Powder metallurgical process for producing driller chuck parts |
| WO2004103613A1 (en) * | 2003-05-20 | 2004-12-02 | Sandvik Intellectual Property Ab | An edge-carrying drill body, and a method for the manufacture of the same and a drilling tool comprising such a drill body |
| CN1687473A (en) * | 2005-04-19 | 2005-10-26 | 河源富马硬质合金股份有限公司 | Carbide alloy, carbide bit and manufacturing method thereof |
| US20090257903A1 (en) * | 2005-09-08 | 2009-10-15 | Stefan Sundin | Powder Metallurgically Manufactured High Speed Steel |
| CN101144370A (en) * | 2007-10-24 | 2008-03-19 | 中国地质大学（武汉） | Hot pressing high phosphorus iron base diamond drilling bit and preparation method thereof |
| CN102189257A (en) * | 2010-03-10 | 2011-09-21 | 钟淼芳 | Powder sintering forming method for cutting tool and cutting body thereof |
| CN102744401A (en) * | 2012-07-24 | 2012-10-24 | 王伟德 | Geological mineral exploration device and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618736A (en) * | 2016-02-21 | 2016-06-01 | 刘辉 | Reamer bit |
| CN106086687A (en) * | 2016-08-27 | 2016-11-09 | 宁波市鄞州新华仪表电机配件厂 | The preparation method of the sliding bearing that a kind of thermal coefficient of expansion is low |
| CN106498309A (en) * | 2016-11-01 | 2017-03-15 | 安徽恒均粉末冶金科技股份有限公司 | A kind of high optical axis sprocket wheel method for preparing powder metallurgy of thermohardening |
| CN109226772A (en) * | 2018-11-20 | 2019-01-18 | 深圳艾利佳材料科技有限公司 | A kind of hot shaping methods of high-yield strength powder metallurgy product |
| CN113478303A (en) * | 2021-06-07 | 2021-10-08 | 东台升华工具有限公司 | Drill bit production process capable of reducing crystal defects |
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Application publication date: 20130320 |