CN101049647B - Presoaking silver brazing method between diamond laminate sheet and carbon steel - Google Patents
Presoaking silver brazing method between diamond laminate sheet and carbon steel Download PDFInfo
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- CN101049647B CN101049647B CN2007100521865A CN200710052186A CN101049647B CN 101049647 B CN101049647 B CN 101049647B CN 2007100521865 A CN2007100521865 A CN 2007100521865A CN 200710052186 A CN200710052186 A CN 200710052186A CN 101049647 B CN101049647 B CN 101049647B
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Abstract
A method for welding the composite diamond plate with carbon steel by use of pre-impregnation and Ag solder includes such steps as cleaning their surfaces to be welded, adding the chosen Ag solder and flux to the surface of hard alloy used as the substrate of composite diamond plate, heat treating at 650-700 deg.C for 5-10 s for impregnation and diffusion, adding the Ag solder to the surface of carbon steel, heat treating at 650-700 deg.C for 5-10 s, adding Ag solder and flux to the position between said composite diamond plate and carbon steel, and welding by oxyacetylene flame of HF induction.
Description
Technical field
The present invention relates to welding method between a kind of diamond compact and the carbon steel.
Background technology
Its top of diamond compact PDC (Polycrystalline Diamond Compact) is the polycrystalline diamond thin layer, the bottom is the Talide substrate, and diamond compact (PDC) instrument is very extensive in sector applications such as geological prospecting, oil drilling, machinings.Welding majority between diamond compact and the steel matrix (bit body) all adopts oxygen-acetylene soldering or high-frequency induction brazing at present, promptly directly scolder and solder flux are placed between carbide alloy substrate and the carbon steel solder side, adopt flame or high-frequency induction heating that solder fusing is welded then.Because the diamond compact substrate mostly is WC content up to 90% carbide alloy, and the performance difference between carbon steel or the steel alloy is very big,, easily cause the composite sheet on the drill bit to produce " flake " phenomenon so adopt present soldering processes and welding method." flake " is PDC geology core bit in the market or creeps into the main failure forms that the PDC drill bit in use occurs comprehensively, and its reason is owing to not prison welding causes.
Summary of the invention
The object of the present invention is to provide a kind of simple to operate, diamond compact that welding effect is good and the pre-infiltration silver brazing method between the carbon steel.
To achieve these goals, technical scheme of the present invention is: the pre-infiltration silver brazing method between diamond compact and the carbon steel is characterized in that it comprises the steps:
1), the solder side to diamond compact, carbon steel carries out cleaning pretreatment;
2), heat-treat on the carbide surface that the silver solder that chooses and soldering flux are added to the diamond compact substrate earlier, make silver solder soak into and spread at the carbide surface of diamond compact substrate, described heat treated temperature is 650-700 ℃, and the time is 5-10 second;
3), silver solder is added on the carbon steel solder side heat-treats, make it in surface infiltration and diffusion, described heat treated temperature is 650-700 ℃, the time is 5-10 second;
4), silver solder and soldering flux are added between the diamond compact substrate of having soaked into (carbide surface) and the carbon steel (solder side), adopt oxygen-acetylene torch heating or high-frequency induction heating to weld.
The fusing point of described silver solder is 595-700 ℃.
The invention has the beneficial effects as follows:
1. soldering of the present invention is connected under the situation that does not change existing soldering equipment, by adopting pre-infiltration technology, can fully get rid of the bubble in the weld layer, and solder side weldering can not occur leaking, lack the weldering phenomenon; Improve welding quality between diamond compact and the carbon steel by pre-infiltration treatment technology, simple to operate, economical and practical, welding effect is good; Solved the problem of diamond compact bit easy " flake " in the market, good marketing application prospect has been arranged.
2. by adopting pre-infiltration technology, scolder is fully sprawled between weld seam, layer is even, can improve the shear resistance of silver brazing layer between diamond compact substrate and the carbon steel face to greatest extent, improved the weld strength of product, solved existing method for brazing and easily produced weld defect and cause this insoluble problem of unstable product quality;
3. diamond compact (PDC) instrument is very extensive in sector applications such as geological prospecting, oil drilling, machining, woodenware processing, and the present invention has fine market application foreground.
The specific embodiment
Embodiment 1:
Pre-infiltration silver brazing method between diamond compact and the carbon steel, it comprises the steps:
1), the solder side to diamond compact, carbon steel carries out cleaning pretreatment.
2), heat-treat on the carbide surface that the silver solder that chooses and soldering flux are added to the diamond compact substrate earlier, make silver solder soak into and spread at the carbide surface of diamond compact substrate, described heat treated temperature is 650 ℃, and the time was 5 seconds; The effect of soldering flux is oxide layer and a greasy dirt of removing solder side, and silver solder is fluxed, and increases the flowability of scolder, improves the fineness of face of weld, during practical operation, does not have quantitative weight proportion relation between silver solder and the soldering flux.Silver solder carries out the thickness 0.10～0.15mm of soakage layer at diamond compact substrate carbide surface.
3), silver solder is added on the carbon steel solder side heat-treats, make it in surface infiltration and diffusion, described heat treated temperature is 650 ℃, the time was 5 seconds.Silver solder carries out the thickness 0.10～0.15mm of soakage layer at the carbon steel solder side.
4), silver solder and soldering flux are added between the diamond compact substrate and carbon steel of having soaked into, adopt oxygen-acetylene torch heating to weld.Soldering flux and silver solder add simultaneously, weld immediately after the adding.
Scolder is selected 312 silver solders for use, and soldering flux selects 102 for use, 650 ℃ of brazing temperatures, and the precompression 0.65Kg time was 5 seconds.
Soldering of the present invention connects the heating of employing oxygen-acetylene torch, and the fusing point of selected silver solder is no more than 700 ℃, and weld interval is short, can not exert an influence to composite sheet dimond synneusis layer, and is simple to operate, welding effect good.
Embodiment 2:
Pre-infiltration silver brazing method between diamond compact and the carbon steel, it comprises the steps:
1), the solder side to diamond compact, carbon steel carries out cleaning pretreatment.
2), heat-treat on the carbide surface that the silver solder that chooses and soldering flux are added to the diamond compact substrate earlier, make silver solder soak into and spread at the carbide surface of diamond compact substrate, described heat treated temperature is 680 ℃, and the time was 8 seconds; Silver solder carries out the thickness 0.10～0.15mm of soakage layer at diamond compact substrate carbide surface.
3), silver solder is added on the carbon steel solder side heat-treats, make it in surface infiltration and diffusion, described heat treated temperature is 680 ℃, the time was 8 seconds.Silver solder carries out the thickness 0.10～0.15mm of soakage layer at the carbon steel solder side.
4), silver solder and soldering flux are added between the diamond compact substrate and carbon steel of having soaked into, adopt high-frequency induction heating to weld.Soldering flux and silver solder add simultaneously, weld immediately after the adding.
Scolder is selected 315 silver solders for use, and soldering flux is selected 103 silver soldering agent for use, 650 ℃ of brazing temperatures, precompression 0.65-1.0Kg.Described welding temperature is 680 ℃, and pressure is 0.8Kg, and the time was 8 seconds.
Soldering of the present invention connects the employing high-frequency induction heating, and the fusing point of selected silver solder is no more than 700 ℃, and weld interval is short, can not exert an influence to composite sheet dimond synneusis layer, and is simple to operate, welding effect good.
Embodiment 3:
Pre-infiltration silver brazing method between diamond compact and the carbon steel, it comprises the steps:
1), the solder side to diamond compact, carbon steel carries out cleaning pretreatment.
2), heat-treat on the carbide surface that the silver solder that chooses and soldering flux are added to the diamond compact substrate earlier, make silver solder soak into and spread at the carbide surface of diamond compact substrate, described heat treated temperature is 700 ℃, and the time was 10 seconds.Silver solder carries out the thickness 0.10～0.15mm of soakage layer at diamond compact substrate carbide surface.
3), silver solder is added on the carbon steel solder side heat-treats, make it in surface infiltration and diffusion, described heat treated temperature is 700 ℃, the time was 10 seconds.Silver solder carries out the thickness 0.10～0.15mm of soakage layer at the carbon steel solder side.
4), silver solder and soldering flux are added between the diamond compact substrate and carbon steel of having soaked into, adopt oxygen-acetylene torch heating to weld.Soldering flux and silver solder add simultaneously, weld immediately after the adding.
Scolder is selected 315 silver solders for use, and soldering flux selects 102 for use, and welding temperature is 700 ℃, and pressure is 1.0Kg, and the time was 10 seconds.
Soldering of the present invention connects the heating of employing oxygen-acetylene torch, and the fusing point of selected silver solder is no more than 700 ℃, and weld interval is short, can not exert an influence to composite sheet dimond synneusis layer, and is simple to operate, welding effect good.
Claims (2)
1. the pre-infiltration silver brazing method between diamond compact and the carbon steel is characterized in that it comprises the steps:
1), the solder side to diamond compact, carbon steel carries out cleaning pretreatment;
2), heat-treat on the carbide surface that the silver solder that chooses and soldering flux are added to the diamond compact substrate earlier, make silver solder soak into and spread at the carbide surface of diamond compact substrate, described heat treated temperature is 650-700 ℃, and the time is 5-10 second;
3), silver solder is added on the carbon steel solder side heat-treats, make it in surface infiltration and diffusion, described heat treatment temperature is 650-700 ℃, the time is 5-10 second;
4), silver solder and soldering flux are added between the diamond compact substrate and carbon steel of having soaked into, adopt oxygen-acetylene torch heating or high-frequency induction heating to weld.
2. the pre-infiltration silver brazing method between diamond compact according to claim 1 and the carbon steel, it is characterized in that: the fusing point of described silver solder is 595-700 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100521865A CN101049647B (en) | 2007-05-17 | 2007-05-17 | Presoaking silver brazing method between diamond laminate sheet and carbon steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100521865A CN101049647B (en) | 2007-05-17 | 2007-05-17 | Presoaking silver brazing method between diamond laminate sheet and carbon steel |
Publications (2)
| Publication Number | Publication Date |
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| CN101049647A CN101049647A (en) | 2007-10-10 |
| CN101049647B true CN101049647B (en) | 2010-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100521865A Expired - Fee Related CN101049647B (en) | 2007-05-17 | 2007-05-17 | Presoaking silver brazing method between diamond laminate sheet and carbon steel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101856758A (en) * | 2010-05-28 | 2010-10-13 | 河海大学常州校区 | Method for welding hard alloy steelwork and 45 steelwork |
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| CN101288920B (en) * | 2008-06-03 | 2010-04-21 | 周福有 | Manufacturing method of carbon steel-stainless steel or copper or titanium or nickel instant continuous compound material |
| CN102303192A (en) * | 2011-05-06 | 2012-01-04 | 成都比拓超硬材料有限公司 | Method for improving applicability of polycrystalline diamond composite sheet serving as drill tooth/cutter tooth |
| CN103100732B (en) * | 2011-12-16 | 2015-08-26 | 河南飞孟金刚石工业有限公司 | A kind of diamond compact |
| CN103008816B (en) * | 2012-12-27 | 2015-04-08 | 四川川庆石油钻采科技有限公司 | Welding method for welding polycrystalline diamond compacts (PDC) and tungsten carbide matrix by using silver solder |
| CN104275562B (en) * | 2014-06-18 | 2016-02-03 | 黄河科技学院 | A kind of brazing material, polycrystalline diamond composite article and preparation method thereof |
| CN106141493A (en) * | 2015-08-25 | 2016-11-23 | 洛阳新巨能高热技术有限公司 | A kind of diamond compact brazing solder and welding procedure thereof |
| CN107199382B (en) * | 2017-04-19 | 2019-05-21 | 北京金工万邦石油技术开发有限公司 | A kind of PDC drill bit welding procedure |
| CN107262861A (en) * | 2017-06-20 | 2017-10-20 | 西安热工研究院有限公司 | A kind of method of the stellite alloy film of field brazing turbine blade |
| CN107838494B (en) * | 2017-11-17 | 2020-01-21 | 中山市中建电气有限公司 | Hard alloy saw blade and welding method thereof |
| CN114247957A (en) * | 2021-12-29 | 2022-03-29 | 昆山耐信金刚石工具有限公司 | Welding process for corner post diamond pen |
-
2007
- 2007-05-17 CN CN2007100521865A patent/CN101049647B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101856758A (en) * | 2010-05-28 | 2010-10-13 | 河海大学常州校区 | Method for welding hard alloy steelwork and 45 steelwork |
| CN101856758B (en) * | 2010-05-28 | 2012-02-01 | 河海大学常州校区 | Method for welding hard alloy steelwork and 45 steelwork |
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| CN101049647A (en) | 2007-10-10 |
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Assignee: Wuhan Dida Changjiang Bit Co.,Ltd. Assignor: China University of Geosciences (Wuhan) Contract record no.: 2011420000123 Denomination of invention: Presoaking silver brazing method between diamond laminate sheet and carbon steel Granted publication date: 20100929 License type: Exclusive License Open date: 20071010 Record date: 20110613 |
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