CN101701285A - Device and technique for processing rope drill rod in medium-frequency induction way - Google Patents
Device and technique for processing rope drill rod in medium-frequency induction way Download PDFInfo
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- CN101701285A CN101701285A CN200910222391A CN200910222391A CN101701285A CN 101701285 A CN101701285 A CN 101701285A CN 200910222391 A CN200910222391 A CN 200910222391A CN 200910222391 A CN200910222391 A CN 200910222391A CN 101701285 A CN101701285 A CN 101701285A
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Abstract
The invention provides a device and a technique for processing a rope drill rod in a medium-frequency induction way, and solves the problems of low production efficiency, poor evenness of integral heat treatment of the drill rod, and low energy utilization rate in the traditional heat treatment techniques for producing long steel pipes. The device mainly comprises a quenching induction coil, a quenching spraying cooling water loop, a tempering induction coil, a tempering spraying water loop and a variable-frequency adjustable-speed roller way. The technique is realized in a way that: using a production mode of section-by-section advance continuous induction heating; and quickly heating to the austenite temperature before quenching the drill rod, thereby forming an ultrafine martensitic structure during quenching and forming a fine-grain ferrite-pearlite structure during normalizing. Since the induction heating has the advantage of short tempering time, the precipitated small-grain carbides can be evenly distributed on the fine-grain martensitic substrate. The invention carries out the section-by-section advance continuous heating by utilizing the electromagnetic induction of the medium-frequency current, and can simultaneously carry out the quenching and the tempering. The invention ensures the heat treatment evenness of the drill rod body and achieves the goal of enhancing the comprehensive mechanical properties of the drill rod.
Description
Technical field
The present invention relates to a kind of equipment and processing method of handling the cord drill-rod of probing use.
Background technology
Using more wire line coring drilling rod in geological prospecting is a kind of thin-walled class alloy steel pipe, in use want to bear on the one hand the tensile stress that body of rod deadweight is produced, to bear the moment of torsion that the unit head high-speed rotary produces on the other hand, therefore, the mechanical property of drilling rod be had relatively high expectations.Increase along with depth of exploration, requirement to the mechanical property bearing capacity of drilling rod body also progressively increases, common hot rolling or cold drawing steel tube can't satisfy service requirements, therefore must just improve the overall mechanical properties of drilling rod through whole modifier treatment, prolong the work-ing life of drilling rod.
Therefore, our factory has been introduced Medium frequency induction steel pipe heat-treatment production line, has researched and developed to be used for the whole modified thermal treatment process of cord drill-rod, and it is higher to produce mechanical property, stay-in-grade class cord drill-rod.
According to traditional thermal treatment process mode, the modifier treatment of long tube class steel pipe at first is whole heating in darker vertical pit furnace, cools in same dark oil sump then, finishes quenching technology; And then the tubing after will quenching is put into the insulation long period in the pit furnace, finishes tempering process.The modified mode production efficiency of this quasi-tradition is lower, and the complete heat treatment homogeneity of drilling rod is bad, and rate of energy is not high, and simultaneously, the smog that produces when the oil sump internal cooling causes environmental pollution easily.
Summary of the invention
The purpose of this invention is to provide a kind of Medium frequency induction and handle the equipment and the technology of cord drill-rod, solve traditional thermal treatment process mode and produce long tube class steel pipe, production efficiency is lower, the complete heat treatment homogeneity of drilling rod is bad, rate of energy is not high, simultaneously, the smog that produces when the oil sump internal cooling causes environmental pollution problems easily.
The objective of the invention is to be achieved through the following technical solutions:
Medium frequency induction is handled the equipment of cord drill-rod, mainly comprise quenching ruhmkorff coil, quenching spraying cooling water circle, tempering ruhmkorff coil, tempering spray hydrosphere and drive drilling rod progressive speed control by frequency variation roller-way that described speed control by frequency variation roller-way is successively by quenching ruhmkorff coil, quenching spraying cooling water circle, tempering ruhmkorff coil, tempering spray hydrosphere.The ruhmkorff coil that wherein quenches has two at least.
Medium frequency induction is handled the technology of cord drill-rod, adopt advance the one by one mode of production of continuous induction heating of segmentation, its concrete steps are as follows: at first pending drilling rod is placed on the bin, adjust the linear velocity of variable-frequency motor pair roller feed mechanism, each sensing apparatus energising of production line is entered normal working order, adjust cooling hydrosphere water yield size; Secondly will handle drilling rod has lifting mechanism that body is sent in the pair roller feed mechanism, spray hydrosphere by quenching ruhmkorff coil, quenching spraying cooling water circle, tempering ruhmkorff coil, tempering successively with even velocity, observation maintains each regional temperature respectively in the Heating temperature of each heating region: quenching temperature 850-950 ℃; Tempering temperature 550-710 ℃.
Drilling rod quickly heats up to austenitic temperature before quenching, and can form superfine martensitic stucture during quenching, then can form close grain ferrite-pearlite structure during normalizing.Because the induction heating tempering time is short, the small-particle carbide is separated out, and can be evenly distributed in the compact grained martensitic matrix.
This patent utilizes the electromagnetic inductive heating principle of electric current of intermediate frequency to carry out the segmentation continuous type of heating of progressive one by one, and quenching and tempering is online carrying out simultaneously.Induction heating be with electricity as the energy, be different from conventional thermal treatment type of heating fully and use combustion gas such as Sweet natural gas, coal gas and liquefied petroleum gas (LPG) such, in the heat-processed of steel pipe, can produce flue dust, form atmospheric pollution.In addition, when using the Medium frequency induction technology that body is heated, heat-up rate is fast, and the efficient height can be realized the continuous production operation of body, improved the product working (machining) efficiency, simultaneously, because temperature can be online controllable, therefore, can guarantee the thermal treatment homogeneity of drilling rod body, reach the purpose that improves the drilling rod comprehensive mechanical performance.
Description of drawings
With embodiment the present invention is described in further detail with reference to the accompanying drawings below.
Fig. 1 is the equipment structure chart that Medium frequency induction of the present invention is handled cord drill-rod;
Fig. 2 is the cross section hardness distribution of the drilling rod of the device processes of handling cord drill-rod through Medium frequency induction of the present invention;
Fig. 3 is the axial stiffness distribution plan of the drilling rod of the device processes of handling cord drill-rod through Medium frequency induction of the present invention.
Among the figure:
1, quenching ruhmkorff coil; 2, quenching spraying cooling water circle; 3, tempering ruhmkorff coil; 4, tempering spray hydrosphere; 5, speed control by frequency variation roller-way; 6, drilling rod.
Embodiment
As shown in Figure 1, Medium frequency induction of the present invention is handled the equipment of cord drill-rod, mainly comprise quenching ruhmkorff coil 1, quenching spraying cooling water circle 2, tempering ruhmkorff coil 3, tempering spray hydrosphere 4 and drive drilling rod 6 progressive speed control by frequency variation roller-ways 5 that described speed control by frequency variation roller-way 5 is successively by quenching ruhmkorff coil 1, quenching spraying cooling water circle 2, tempering ruhmkorff coil 3, tempering spray hydrosphere 4.The ruhmkorff coil 1 that wherein quenches has two at least.
Medium frequency induction is handled the technology of cord drill-rod, adopt advance the one by one mode of production of continuous induction heating of segmentation, its concrete steps are as follows: at first pending drilling rod is placed on the bin, adjust the linear velocity of variable-frequency motor pair roller feed mechanism, each sensing apparatus energising of production line is entered normal working order, adjust cooling hydrosphere water yield size; Secondly will handle drilling rod has lifting mechanism that body is sent in the pair roller feed mechanism, spray hydrosphere by quenching ruhmkorff coil, quenching spraying cooling water circle, tempering ruhmkorff coil, tempering successively with even velocity, observation maintains each regional temperature respectively in the Heating temperature of each heating region: quenching temperature 850-950 ℃; Tempering temperature 550-710 ℃.
Drilling rod quickly heats up to austenitic temperature before quenching, and can form superfine martensitic stucture during quenching, then can form close grain ferrite-pearlite structure during normalizing.Because the induction heating tempering time is short, the small-particle carbide is separated out, and can be evenly distributed in the compact grained martensitic matrix.
This patent utilizes the electromagnetic inductive heating principle of electric current of intermediate frequency to carry out the segmentation continuous type of heating of progressive one by one, and quenching and tempering is online carrying out simultaneously.Induction heating be with electricity as the energy, be different from conventional thermal treatment type of heating fully and use combustion gas such as Sweet natural gas, coal gas and liquefied petroleum gas (LPG) such, in the heat-processed of steel pipe, can produce flue dust, form atmospheric pollution.In addition, when using the Medium frequency induction technology that body is heated, heat-up rate is fast, and the efficient height can be realized the continuous production operation of body, improved the product working (machining) efficiency, simultaneously, because temperature can be online controllable, therefore, can guarantee the thermal treatment homogeneity of drilling rod body, reach the purpose that improves the drilling rod comprehensive mechanical performance.
Hardness Distribution is seen accompanying drawing 2, accompanying drawing 3.
Mechanical property:
Drilling rod after the Medium frequency induction modifier treatment, the whole synthesis mechanical property obviously improves, and performance profile is more even.
Claims (5)
1. Medium frequency induction is handled the equipment of cord drill-rod, mainly comprise quenching ruhmkorff coil, quenching spraying cooling water circle, tempering ruhmkorff coil, tempering spray hydrosphere and drive drilling rod progressive speed control by frequency variation roller-way, it is characterized in that described speed control by frequency variation roller-way is successively by quenching ruhmkorff coil, quenching spraying cooling water circle, tempering ruhmkorff coil, tempering spray hydrosphere.
2. Medium frequency induction according to claim 1 is handled the equipment of cord drill-rod, it is characterized in that the quenching ruhmkorff coil has two at least.
3. Medium frequency induction is handled the technology of cord drill-rod, adopt advance the one by one mode of production of continuous induction heating of segmentation, its concrete steps are as follows: at first pending drilling rod is placed on the bin, adjust the linear velocity of variable-frequency motor pair roller feed mechanism, each sensing apparatus energising of production line is entered normal working order, adjust cooling hydrosphere water yield size; Secondly will handle drilling rod has lifting mechanism that body is sent in the pair roller feed mechanism, sprays hydrosphere by quenching ruhmkorff coil, quenching spraying cooling water circle, tempering ruhmkorff coil, tempering successively with even velocity.
4. Medium frequency induction according to claim 3 is handled the technology of cord drill-rod, it is characterized in that quenching temperature 850-950 ℃.
5. Medium frequency induction according to claim 3 is handled the technology of cord drill-rod, it is characterized in that tempering temperature 550-710 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910222391A CN101701285A (en) | 2009-11-17 | 2009-11-17 | Device and technique for processing rope drill rod in medium-frequency induction way |
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| CN200910222391A CN101701285A (en) | 2009-11-17 | 2009-11-17 | Device and technique for processing rope drill rod in medium-frequency induction way |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824515A (en) * | 2010-05-06 | 2010-09-08 | 安徽力源数控刃模具制造有限公司 | Isothermal progressive induction heating surface quenching method |
| CN102303210A (en) * | 2011-05-20 | 2012-01-04 | 山东大学 | Method for manufacturing continuous induction heating snap rings of rotation tool, drill bit, hammer tool and saw blade |
| CN102864293A (en) * | 2011-07-05 | 2013-01-09 | 北京隆盛泰科石油管科技有限公司 | Large-diameter steel pipe on-line bulk heat treatment system |
| CN103276180A (en) * | 2013-06-09 | 2013-09-04 | 嘉兴市新纪元钢管制造有限公司 | On-line quenching and tempering technology of seamless steel tube |
| WO2015124585A1 (en) * | 2014-02-21 | 2015-08-27 | Thyssenkrupp Rothe Erde Gmbh | System, production plant, and method |
| CN113736958A (en) * | 2021-09-15 | 2021-12-03 | 临沂业隆通用机械有限公司 | Method for improving hardenability by spray cooling and processing equipment thereof |
| CN113832312A (en) * | 2021-09-01 | 2021-12-24 | 河南中原特钢装备制造有限公司 | Variable-diameter shell variable-frequency induction heat treatment process |
| CN115354135A (en) * | 2022-07-29 | 2022-11-18 | 江苏罡阳股份有限公司 | Integrated device for induction quenching and tempering of crankshaft connecting rod of motorcycle and machining method |
-
2009
- 2009-11-17 CN CN200910222391A patent/CN101701285A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824515A (en) * | 2010-05-06 | 2010-09-08 | 安徽力源数控刃模具制造有限公司 | Isothermal progressive induction heating surface quenching method |
| CN102303210A (en) * | 2011-05-20 | 2012-01-04 | 山东大学 | Method for manufacturing continuous induction heating snap rings of rotation tool, drill bit, hammer tool and saw blade |
| CN102864293A (en) * | 2011-07-05 | 2013-01-09 | 北京隆盛泰科石油管科技有限公司 | Large-diameter steel pipe on-line bulk heat treatment system |
| CN102864293B (en) * | 2011-07-05 | 2014-08-27 | 北京隆盛泰科石油管科技有限公司 | Large-diameter steel pipe on-line bulk heat treatment system |
| CN103276180A (en) * | 2013-06-09 | 2013-09-04 | 嘉兴市新纪元钢管制造有限公司 | On-line quenching and tempering technology of seamless steel tube |
| WO2015124585A1 (en) * | 2014-02-21 | 2015-08-27 | Thyssenkrupp Rothe Erde Gmbh | System, production plant, and method |
| CN106029916A (en) * | 2014-02-21 | 2016-10-12 | 蒂森克虏伯罗特艾德有限公司 | System, production plant, and method |
| CN113832312A (en) * | 2021-09-01 | 2021-12-24 | 河南中原特钢装备制造有限公司 | Variable-diameter shell variable-frequency induction heat treatment process |
| CN113736958A (en) * | 2021-09-15 | 2021-12-03 | 临沂业隆通用机械有限公司 | Method for improving hardenability by spray cooling and processing equipment thereof |
| CN115354135A (en) * | 2022-07-29 | 2022-11-18 | 江苏罡阳股份有限公司 | Integrated device for induction quenching and tempering of crankshaft connecting rod of motorcycle and machining method |
| CN115354135B (en) * | 2022-07-29 | 2024-05-10 | 江苏罡阳股份有限公司 | Integrated device for induction quenching and tempering of motorcycle crankshaft connecting rod and processing method |
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Application publication date: 20100505 |