CN104259709A - Production method of grinding shoes, milling shoes or milling drums - Google Patents
Production method of grinding shoes, milling shoes or milling drums Download PDFInfo
- Publication number
- CN104259709A CN104259709A CN201410492026.2A CN201410492026A CN104259709A CN 104259709 A CN104259709 A CN 104259709A CN 201410492026 A CN201410492026 A CN 201410492026A CN 104259709 A CN104259709 A CN 104259709A
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- China
- Prior art keywords
- welding rod
- base welding
- particle
- layer
- casing section
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crushing And Grinding (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention relates to production methods of down-hole operation tools in the oil industry, in particular to a production method of grinding shoes, milling shoes or milling drums for down-hole grinding and the like. The method includes the steps of welding a layer of copper-based solder or silver-based solder on the joint surface of the grinding shoes, and melting electrode particles and a mixed layer of cemented carbide particles on the joint surface through a casting method, namely forming a grinding body. Therefore, the grinding body and the joint surface of the grinding shoes, the milling shoes or the milling drums are melted into a whole. The welding is firm. No voids and pores exist in the entire bodies of the grinding shoes, the milling shoes or the milling drums. The space between the cemented carbide particles is completely filled with copper-based electrode solder or silver-based electrode solder. The temperature control is accurate. The over-burning of the cemented carbide particles can be avoided.
Description
Technical field
The present invention relates to the preparation method of petroleum industry underground operation tool, particularly relate to a kind of manufacture method of junk mill, milling shoe or casing section mill for down-hole grinding etc.
Background technology
A kind of instrument used in the techniques such as junk mill, milling shoe, casing section mill are petroleum industry well workovers, salvaging, casing side tracking are windowed, it generally includes body and is molded over the skiving body on body.Existing manufacturing process is that hard alloy particle and copper base welding rod or money base welding rod are sintered into stick electrode according to the ratio of 1:1, then, be welded on the body of junk mill by the method for built-up welding, in layer built-up welding, shortcoming has space between layers, not prison welding, temperature is wayward, and the easy burning of hard alloy particle, causes the hardness of hard alloy particle and intensity to decline, makes shorten the service life of junk mill, milling shoe, casing section mill.
Patent CN201110041550 discloses a kind of junk mill manufacture method and frock thereof, comprises the steps: to make junk mill body with carbon steel or tungsten carbide; Make the overlay cladding on junk mill body be in downhand position, first use flame preheat workpiece, then load onto welding tooling clamping junk mill body, the material in the face that welding tooling contacts with overlay cladding with junk mill body is austenitic stainless steel or copper alloy; Junk mill body carries out built-up welding with YD type carbide electrode, unclamps interior card after having welded, take off welding tooling.On the one hand, this manufacture method comparatively relies on the frock of certain special construction, and on the other hand, the welding step of the method is appointed based on built-up welding.
Summary of the invention
For solving the deficiencies in the prior art, the invention provides the manufacture method of a kind of junk mill, milling shoe or casing section mill.
A manufacture method for junk mill, milling shoe or casing section mill, comprises the following steps:
1) the copper base welding rod layer that one deck of burn-oning on the clean faying face of junk mill body, milling shoe body or casing section mill body and skiving body is clean or money base welding rod layer.
Preferably, the thickness of described copper base welding rod layer or money base welding rod layer is less than or equal to 0.5mm.
2) the junk mill body of burn-on copper base welding rod layer or money base welding rod layer, milling shoe body or casing section mill body are positioned in graphite-made mould.
3) on described copper base welding rod layer or money base welding rod layer, mixed layer is laid, described mixed layer is clean copper base welding rod particle and the Homogeneous phase mixing layer of hard alloy particle or the Homogeneous phase mixing layer of money base welding rod particle and hard alloy particle, in described mixed layer, the mass ratio of described copper base welding rod particle or described money base welding rod particle and described hard alloy particle is 5:5 ~ 4:6, and, when step 2) in burn-on copper base welding rod layer time, what this step was corresponding selects copper base welding rod particle, when step 2) in burn-on money base welding rod layer, what this step was corresponding selects money base welding rod particle.
Preferably, described copper base welding rod particle or described money base welding rod grain diameter are 4 ~ 6mm, and the particle diameter of described hard alloy particle is 5mm ~ 7mm.
4) by whole graphite-made mould and the junk mill body laying described mixed layer, milling shoe body or casing section mill body are positioned in electric furnace, evenly be warming up to maximum temperature under inert gas atmosphere, insulation 25 ~ 30min, Air flow to 200 ~ 230 DEG C afterwards, be incubated 1.5 ~ 2 hours again, come out of the stove, remove graphite-made mould, namely obtain at junk mill body, with the junk mill of shaping skiving body on milling shoe body or casing section mill body, milling shoe, or casing section mill, wherein, when selecting copper base welding rod particle, the highest corresponding holding temperature is 940 ~ 960 DEG C, when selecting money base welding rod particle, the highest corresponding holding temperature is 720 ~ 750 DEG C.
Preferably, in described step 2) in described graphite-made mould mate with the size and dimension of described junk mill, milling shoe or casing section mill, the inner surface of described graphite-made mould and the sided seamless gap of described junk mill body, milling shoe body or casing section mill body are fitted.
Wherein, faying face, copper base welding rod, money base welding rod layer, copper base welding rod particle, money base welding rod particle, hard alloy particle etc. all must carry out surface cleaning with acetone.
The faying face of skiving body and junk mill, milling shoe, casing section mill body fuses into one, firm welding, space and pore is there is not in the skiving body inside of whole junk mill, milling shoe, casing section mill, rush full by copper base welding rod or money base welding rod material completely between hard alloy particle, temperature precise control, hard alloy particle there will not be burning.Through using, the junk mill manufactured by method provided by the present invention proves that intensity and life-span are all enhanced about more than once.
Detailed description of the invention
Be described principle of the present invention and feature below, example, only for explaining the present invention, is not intended to limit scope of the present invention.
First embodiment
Embodiment 1
The manufacture method of junk mill, milling shoe or casing section mill comprises the following steps:
1) clean the faying face of all hard alloy particles, copper base welding rod and junk mill body and skiving body with acetone, copper base welding rod is cut into the particle of the equal size with hard alloy particle, and cleans up with acetone, with for subsequent use.
2) burn-on on the faying face of junk mill body one deck copper base welding rod layer, the thickness of described copper base welding rod layer is less than or equal to 0.5mm.
3) the junk mill body of copper base welding rod layer of burn-oning is positioned in graphite-made mould.Graphite-made mould is tubular, mates with the size and dimension of described junk mill.After placement, the inner surface of graphite-made mould and the sided seamless gap of described junk mill body are fitted.Further, the height of graphite-made mould is greater than the height that described junk mill body adds described copper base welding rod layer and prefabricated skiving body, with the operating space of step after reserving.
4) on described copper base welding rod layer, mixed layer is laid.Described mixed layer is the Homogeneous phase mixing layer of copper base welding rod particle and hard alloy particle.The mass ratio of described copper base welding rod particle and described hard alloy particle is 4:6.Described copper base welding rod particle is 1:1.1 with the particle diameter ratio of described hard alloy particle.The particle diameter of described hard alloy particle is 5mm.In other examples, the particle diameter of described hard alloy particle is 6mm or 7mm.
4) by whole graphite-made mould and lay the junk mill body of described mixed layer, milling shoe body or casing section mill body and be positioned in electric furnace, under inert gas atmosphere with 960 DEG C of soak 30min, Air flow to 200 DEG C afterwards, be incubated 2 hours again, come out of the stove, remove graphite-made mould, obtain junk mill.In other examples, under inert gas atmosphere with 950 DEG C or 940 DEG C of soak 25min or 28min, Air flow to 210 DEG C or 220 DEG C afterwards, then be incubated 1.5 hours or 1.8 hours.
In milling shoe body or casing section mill body application above-mentioned steps, milling shoe or casing section mill can be obtained equally.
Second embodiment
Embodiment 2
The manufacture method of junk mill, milling shoe or casing section mill comprises the following steps:
1) clean the faying face of all hard alloy particles, money base welding rod and junk mill body and skiving body with acetone, money base welding rod is cut into the particle of the equal size with hard alloy particle, and cleans up with acetone, with for subsequent use.
2) burn-on on the faying face of junk mill body one deck money base welding rod layer, the thickness of described money base welding rod layer is less than or equal to 0.5mm.
3) the junk mill body of money base welding rod layer of burn-oning is positioned in graphite-made mould.Graphite-made mould is tubular, mates with the size and dimension of described junk mill.After placement, the inner surface of graphite-made mould and the sided seamless gap of described junk mill body are fitted.Further, the height of graphite-made mould is greater than the height that described junk mill body adds described money base welding rod layer and prefabricated skiving body, with the operating space of step after reserving.
4) on described money base welding rod layer, mixed layer is laid.Described mixed layer is the Homogeneous phase mixing layer of money base welding rod particle and hard alloy particle.The mass ratio of described money base welding rod particle and described hard alloy particle is 5:5.Described money base welding rod particle is 1:1 with the particle diameter ratio of described hard alloy particle.The particle diameter of described hard alloy particle is 5mm.In other examples, the particle diameter of described hard alloy particle is 6mm or 7mm.
4) by whole graphite-made mould and lay the junk mill body of described mixed layer, milling shoe body or casing section mill body and be positioned in electric furnace, under inert gas atmosphere with 750 DEG C of soak 30min, Air flow to 200 DEG C afterwards, be incubated 2 hours again, come out of the stove, remove graphite-made mould, obtain junk mill.In other examples, under inert gas atmosphere with 730 DEG C or 720 DEG C of soak 25min or 28min, Air flow to 210 DEG C or 220 DEG C afterwards, then be incubated 1.5 hours or 1.8 hours.
In milling shoe body or casing section mill body application above-mentioned steps, milling shoe or casing section mill can be obtained equally.
The foregoing is only better embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a manufacture method for junk mill, milling shoe or casing section mill, is characterized in that, comprises the following steps:
1) the copper base welding rod layer that one deck of burn-oning on the clean faying face of junk mill body, milling shoe body or casing section mill body and skiving body is clean or money base welding rod layer;
2) the junk mill body of burn-on copper base welding rod layer or money base welding rod layer, milling shoe body or casing section mill body are positioned in graphite-made mould;
3) on described copper base welding rod layer or money base welding rod layer, mixed layer is laid, described mixed layer is clean copper base welding rod particle or the Homogeneous phase mixing layer of money base welding rod particle and hard alloy particle, in described mixed layer, the mass ratio of described copper base welding rod particle or described money base welding rod particle and described hard alloy particle is 5:5 ~ 4:6, and, when step 2) in burn-on copper base welding rod layer time, what this step was corresponding selects copper base welding rod particle, when step 2) in burn-on money base welding rod layer, what this step was corresponding selects money base welding rod particle;
4) by whole graphite-made mould and the junk mill body laying described mixed layer, milling shoe body or casing section mill body are positioned in electric furnace, evenly be warming up to maximum temperature under inert gas atmosphere, insulation 25 ~ 30min, Air flow to 200 ~ 230 DEG C afterwards, be incubated 1.5 ~ 2 hours again, come out of the stove, remove graphite-made mould, namely obtain at junk mill body, with the junk mill of shaping skiving body on milling shoe body or casing section mill body, milling shoe, or casing section mill, wherein, when selecting copper base welding rod particle, the highest corresponding holding temperature is 940 ~ 960 DEG C, when selecting money base welding rod particle, the highest corresponding holding temperature is 720 ~ 750 DEG C.
2. the manufacture method of junk mill according to claim 1, milling shoe or casing section mill, it is characterized in that: described step 2) in described graphite-made mould mate with the size and dimension of described junk mill, milling shoe or casing section mill, the inner surface of described graphite-made mould and the sided seamless gap of described junk mill body, milling shoe body or casing section mill body are fitted.
3. the manufacture method of junk mill according to claim 1 and 2, milling shoe or casing section mill, is characterized in that: in described step 1) in, the thickness of described copper base welding rod layer or money base welding rod layer is less than or equal to 0.5mm.
4. the manufacture method of junk mill according to claim 1 and 2, milling shoe or casing section mill; it is characterized in that: in described step 3) in; the particle diameter of described copper base welding rod particle or described money base welding rod particle is 4 ~ 6mm, and the particle diameter of described hard alloy particle is 5mm ~ 7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492026.2A CN104259709B (en) | 2014-09-23 | 2014-09-23 | The manufacture method of a kind of junk mill, milling shoe or casing section mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492026.2A CN104259709B (en) | 2014-09-23 | 2014-09-23 | The manufacture method of a kind of junk mill, milling shoe or casing section mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104259709A true CN104259709A (en) | 2015-01-07 |
| CN104259709B CN104259709B (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410492026.2A Expired - Fee Related CN104259709B (en) | 2014-09-23 | 2014-09-23 | The manufacture method of a kind of junk mill, milling shoe or casing section mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041257A (en) * | 2016-07-05 | 2016-10-26 | 邵元龙 | Manufacturing process of grinding, casing milling and well repairing tool and mold |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210770A (en) * | 1998-07-31 | 1999-03-17 | 姚雷雨 | Hard alloy wear resistant parts and the producing method |
| JP2002156484A (en) * | 2000-11-21 | 2002-05-31 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacturing and installing method for base plate |
| CN200985757Y (en) * | 2006-07-20 | 2007-12-05 | 范伟光 | Milling shoe |
| CN201401142Y (en) * | 2008-12-12 | 2010-02-10 | 中国石油集团长城钻探工程有限公司 | Horizontal well high-efficiency composite mill shoe |
| CN102151936A (en) * | 2011-02-21 | 2011-08-17 | 泸州川油钻采工具有限公司 | Grind shoe manufacture method and tool |
| CN103711795A (en) * | 2013-11-30 | 2014-04-09 | 天津市润博凯特石油机械制造有限公司 | TC bearing and its production method |
-
2014
- 2014-09-23 CN CN201410492026.2A patent/CN104259709B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210770A (en) * | 1998-07-31 | 1999-03-17 | 姚雷雨 | Hard alloy wear resistant parts and the producing method |
| JP2002156484A (en) * | 2000-11-21 | 2002-05-31 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacturing and installing method for base plate |
| CN200985757Y (en) * | 2006-07-20 | 2007-12-05 | 范伟光 | Milling shoe |
| CN201401142Y (en) * | 2008-12-12 | 2010-02-10 | 中国石油集团长城钻探工程有限公司 | Horizontal well high-efficiency composite mill shoe |
| CN102151936A (en) * | 2011-02-21 | 2011-08-17 | 泸州川油钻采工具有限公司 | Grind shoe manufacture method and tool |
| CN103711795A (en) * | 2013-11-30 | 2014-04-09 | 天津市润博凯特石油机械制造有限公司 | TC bearing and its production method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041257A (en) * | 2016-07-05 | 2016-10-26 | 邵元龙 | Manufacturing process of grinding, casing milling and well repairing tool and mold |
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| Publication number | Publication date |
|---|---|
| CN104259709B (en) | 2016-02-03 |
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