CN1962893A - Liquid-injection liquid-immersion and air-cooling combined controlled quenching and cooling method for workpieces in suspension mode - Google Patents
Liquid-injection liquid-immersion and air-cooling combined controlled quenching and cooling method for workpieces in suspension mode Download PDFInfo
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- CN1962893A CN1962893A CN 200610119244 CN200610119244A CN1962893A CN 1962893 A CN1962893 A CN 1962893A CN 200610119244 CN200610119244 CN 200610119244 CN 200610119244 A CN200610119244 A CN 200610119244A CN 1962893 A CN1962893 A CN 1962893A
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Abstract
The invention discloses a quenching cooling method of work-piece suspension hydrojet, immersing liquid and air cooling combination in the heat disposing domain of metal material, which comprises the following parts: suspension tool and quenching groove, wherein the suspension tool is composed of suspension ring, hook and placing rod; the placing seat is set on two sides of groove hole of quenching groove to place the placing rod of suspension tool; the liquid spraying pipe is set on two sides of quenching region of quenching groove; the suspension tool is hanged on the crane with hook scooping up horizontal quenching tool on the bottom of suspension tool to move in the quenching region toward quenching groove; the placing rod of suspension tool is put on the placing seat at preset supporting position of quenching groove, which does the combination of liquid spraying quenching, immersing quenching and air cooling according to the need.
Description
Technical field
What the present invention relates to is a kind of control quenching and cooling method, particularly a kind of workpiece hang hydrojet, immersion liquid and air-cooling combined controlled quenching and cooling method.Belong to metallic substance thermal treatment field.
Background technology
Quenching is meant steel part is heated to A
C3Or A
C1The above a certain temperature of point keeps certain hour, obtains the thermal treatment process of intended tissue then with suitable speed cooling.For tissue and the performance that obtains to expect, method of cooling, equipment many routines, special and combination are used.Adopting the immerseable shrend and spraying the compound method of cooling that combines of quenching is exactly one of them, its equipment is normally by quenching tank, immersion liquid quenching lifting table, compositions such as spray quenching system, working process is at first to be that the workpiece that will intend quenching is placed on the immersion liquid quenching lifting table, the lifting table that descends then makes among the workpiece dip quench medium, treat that the workpiece surface structural transformation becomes behind the martensite immersion liquid and quenches lifting table is risen to more than the medium liquid level, cool off slowly that (spray is quenched, gas quench (air cooling)), to make the martensitic transformation on top layer after being raised to certain temperature be that toughness immerses workpiece in the medium behind the tempered martensite preferably again when the temperature on top layer is counter.This kind equipment is finished the fast cold and slow cooling conversion of quenching process by immersion liquid quenching lifting table.This cooling intensity conversion of finishing immersion liquid quenching and fluid by the mode that lifting table is set, make the accurate technology for controlled cooling of computer become possibility, and replaced immersion liquid and the mode of fluid time that the quenching part is controlled in traditional lifting of passing through the Artificial Control crane.But, adopt the lifting table mode to go into the liquid quenching for the bigger workpiece of weight and have device structure complexity, cost height and the high problem of failure rate.
Find through literature search prior art, Chinese patent application number is CN200310123799.5, name is called the patent of " immersion liquid and the controlled chilling equipment that sprays the combined quench of quenching ", this technology claims: the quick injected system of outer setting medium of top one side of quenching cell body, outer setting medium at the opposite side on top is emitted system fast, the inner one or both sides of quenching cell body are provided with medium and stir and current-equalizing system, the one or both sides of quenching tank external body are provided with the blower fan cooling system, the top of quenching cell body is provided with the upper cover plate of energy move left and right, the downward last cooling jet of nozzle is set on the upper cover plate, material carrier platform is fixed between the last liquid level and following liquid level of quenching tank, and the bottom of material carrier platform is provided with the following cooling jet that nozzle makes progress; The quick injected system of quenching cell body and medium, medium emit system fast and the blower fan cooling system is a UNICOM.Adopt this equipment to quench, make the control immersion liquid quenching of large size, big weight quenching part become possibility, but the quenching part that requirement will be heated is placed on the material carrier platform in advance, carry out the process of cooling of hydrojet and immersion liquid then, relatively be fit to handle the square quenching part that is difficult for producing distored simple shape and suitable thickness is arranged.And, can't realize the quenching under the rotation situation for the horizontal placement of heavy weight long-axle workpieces, will produce single face cooling earlier and produce big distored problem if also be placed on the quenching process that carries out immersion liquid and fluid on the material carrier platform; If adopt after the first hydrojet mode of immersion liquid to quench,, have the problem that inhomogeneous cooling is spared equally owing to there is the existence of material carrier platform to block the water spray effect of quenching part and material carrier platform contact part.
Summary of the invention
The present invention is directed to the deficiencies in the prior art and defective, propose a kind of workpiece hang hydrojet, immersion liquid and air-cooling combined controlled quenching and cooling method, make it avoid the even problem of hydrojet inhomogeneous cooling that produces owing to blocking of material carrier platform.The product object that the present invention is directed to can be the workpiece of different shape, particularly big weight and adopt axle class part that horizontal placement quenches, bent axle, a class part, all kinds of difform workpiece that slenderness ratio is big, solved the problem that increases because of the even distortion that causes of inhomogeneous cooling, simultaneously also saved the required material of material carrier platform, and because of not existing material carrier platform to make the oxide skin in the removing equipment become easy.
The present invention is achieved by the following technical solutions, and the inventive method has adopted one the quenching part can be hung the suspender that sling and one the quenching part is placed on the quenching tank that hydrojet and immersion liquid combined quench can be realized in the fixed position; Described suspender is made up of suspension ring, hook and placement bar, and suspension ring are used for being connected with the suspension hook of crane, and hook is used to hook the quenching part and it is moved, and places the predetermined Support Position that bar is used for suspender is placed on quenching tank; Described quenching tank respectively is provided with the placement bar that a placement rack is used to place suspender in its notch both sides, in the both sides in the quenching zone of quenching tank sparge pipe is set, and quenching tank has quick injection that realizes medium and the immersion liquid quenching function that medium is emitted fast simultaneously; Carry out spray quenching and immersion liquid quenching according to processing requirement.
It is as follows to the present invention includes step:
At first suspender is hung on the crane, hook by suspender bottom hooks and shifts quenching zone to quenching tank with the quenching part of horizontal placement, the placement bar of suspender is placed on the placement rack of predetermined Support Position of quenching tank, makes the quenching part just in time be in the quenching zone of quenching tank;
Carry out spray quenching and immersion liquid quenching according to processing requirement then:
Spray quenching employing both sides of quenching part in the quenching zone of quenching tank are provided with jet pipe, jet pipe adopts in the method for water pipe perforate on the direction of quenching part or adopts the method for nozzle being installed on the quenching part direction at water pipe, and the medium of spray quenching adopts pump to connect by pipeline and provides;
It is to adopt pump that medium is injected in the quenching tank fast that immersion liquid is quenched, and then the method for medium being emitted by a valve.
For steel alloy: adopt and in hydrojet, carry out the quick injection of medium with the whole submergences of workpiece, when martensite has been changed on the top layer of workpiece into, when heart portion or a certain appointed part begin transition temperature near martensite, the medium that injects is emitted fast, workpiece is slowly cooled off in air, heart portion heat passed and made top layer martensite generation self-tempering to the top layer this moment, performance changes toughness into by fragility behind the martensite generation self-tempering, avoided rimose generation in the subsequent cooling process, can carry out above-mentioned hydrojet repeatedly according to processing requirement, the technological process of immersion liquid and fluid air cooling.Adopt the advantage of this technology to be: (1) has adopted in the hydrojet mode of immersion liquid to go into liquid when immersion liquid, has reduced because the amount of distortion of single face immersion liquid; (2) because to have adopted period cooling that immersion liquid combines with air cooling to make steel alloy can adopt water be that medium quenches, in the mechanical property raising and do not ftracture.
For carbon steel: because its hardening capacity is lower than steel alloy, can adopt the process of in hydrojet, carrying out immersion liquid, this technology can be cooled to the quenching part to quench always and go out medium after the temperature at the position that requires performance of part is lower than martensite transformation temperature according to processing requirement, carbon steel adopts the inventive method to go into the single face cooling of liquid quench cooled can avoid into liquid the time, has reduced amount of distortion.
Compared with prior art, the present invention designs on the basis to various quenching and cooling method analyses and trial, especially big weight, adopt horizontal placement and can't in quenching process, be rotated the axle class part, bent axle, a class part of quenching, all kinds of difform workpiece that slenderness ratio is big, because adopting the hydrojet mode in immersion liquid cools off the quenching part, solved the problem that increases because of the even distortion that causes of inhomogeneous cooling, also saved simultaneously and made the required material of material carrier platform, and made the oxide skin in the removing equipment become easy because of having saved material carrier platform.
Embodiment
Below embodiments of the invention are elaborated: present embodiment has provided detailed embodiment and process being to implement under the prerequisite with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
The treating product object of this example is that weight surpasses 1 ton, can't be rotated the thin and long shafts part of quenching, material is a medium carbon alloy steel, requires the mechanical property after the modifier treatment higher, adopt traditional oil quenching not reach performance requriements, need to adopt water as quenchant.Adopt method of the present invention to quench, that is: workpiece hang hydrojet, immersion liquid and air-cooling combined controlled quenching and cooling method, concrete quenching process is as follows: suspender is hung on the crane, hook by suspender bottom hooks and shifts quenching zone to quenching tank with the quenching part of horizontal placement, the placement bar of suspender is placed on the placement rack of predetermined Support Position of quenching tank, make the quenching part just in time be in the quenching zone of quenching tank, carry out quenching process such as spray quenching, immersion liquid and fluid then according to processing requirement.Specific embodiment is: adopt and carry out the quick injection of medium with the whole submergences of workpiece in hydrojet, martensite is changed on top layer to workpiece into, when heart portion or a certain appointed part begin transition temperature near martensite, the medium that injects is emitted fast, workpiece is slowly cooled off in air, heart portion heat passed and made top layer martensite generation self-tempering to the top layer this moment, and performance changes toughness into by fragility behind the martensite generation self-tempering, had avoided rimose generation in the subsequent cooling process.Can carry out the technological process of above-mentioned hydrojet, immersion liquid and fluid air cooling repeatedly according to processing requirement.Adopt the advantage of this technology to be (1) carries out immersion liquid in hydrojet, has reduced because the amount of distortion of single face immersion liquid; (2) because to have adopted period cooling that immersion liquid combines with air cooling to make steel alloy can adopt water be that medium quenches, in the mechanical property raising and do not ftracture.
Embodiment 2
The treating product object of this example is that weight surpasses 1 ton, can't be rotated the crank shaft blank of quenching, and material is a medium carbon steel, adopts water as quenchant.Adopt method of the present invention to quench, that is: workpiece hang hydrojet, immersion liquid and air-cooling combined controlled quenching and cooling method.Concrete quenching process is as follows: suspender is hung on the crane, hook by suspender bottom hooks and shifts quenching zone to quenching tank with the quenching part of horizontal placement, the placement bar of suspender is placed on the placement rack of predetermined Support Position of quenching tank, the part that quenches this moment just in time is in the quenching zone of quenching tank, carries out quenching process such as spray quenching, immersion liquid and fluid then according to processing requirement.Because carbon steel hardening capacity is lower than steel alloy, can adopt the process of in hydrojet, carrying out immersion liquid, this technology can be lower than martensite transformation temperature with quenching part be cooled to the to quench temperature at the position that requires performance of part always according to processing requirement, can be cooled to heart portion temperature such as 45 steel and be lower than 300 ℃.Medium carbon steel adopts the inventive method to go into the single face refrigerative ununiformity of liquid quench cooled can alleviate into liquid the time.
Embodiment 3
The treating product object of this example is that weight surpasses 1 ton long slab class part, and material is a steel alloy, adopts water as quenchant.Adopt method of the present invention to quench, that is: workpiece hang hydrojet, immersion liquid and air-cooling combined controlled quenching and cooling method.Concrete quenching process is as follows: suspender is hung on the crane, hook by suspender bottom hooks and shifts quenching zone to quenching tank with the quenching part of horizontal placement, the placement bar of suspender is placed on the placement rack of predetermined Support Position of quenching tank, make the quenching part just in time be in the quenching zone of quenching tank, carry out spray quenching according to processing requirement then, quenching process such as immersion liquid and fluid, specific embodiment is: adopt and carry out the quick injection of medium with the whole submergences of workpiece in hydrojet, martensite is changed on top layer to workpiece into, when heart portion or a certain appointed part begin transition temperature near martensite, the medium that injects is emitted fast, workpiece is slowly cooled off in air, heart portion heat passed and made top layer martensite generation self-tempering to the top layer this moment, performance changes toughness into by fragility behind the martensite generation self-tempering, has avoided rimose generation in the subsequent cooling process.Can carry out the technological process of above-mentioned hydrojet, immersion liquid and fluid air cooling repeatedly according to processing requirement.The advantage that adopts this technology is because to have adopted period cooling that immersion liquid combines with air cooling to make steel alloy can adopt water be that medium quenches, in the mechanical property raising and do not ftracture.
Claims (3)
1, a kind of workpiece hang hydrojet, immersion liquid and air-cooling combined controlled quenching and cooling method is characterized in that, comprise that step is as follows:
At first suspender is hung on the crane, hook by suspender bottom hooks and shifts quenching zone to quenching tank with the quenching part of horizontal placement, the placement bar of suspender is placed on the placement rack of predetermined Support Position of quenching tank, makes the quenching part just in time be in the quenching zone of quenching tank;
Carry out spray quenching and immersion liquid quenching according to processing requirement then:
Spray quenching employing both sides of quenching part in the quenching zone of quenching tank are provided with jet pipe, jet pipe adopts in the method for water pipe perforate on the direction of quenching part or adopts the method for nozzle being installed on the quenching part direction at water pipe, and the medium of spray quenching adopts pump to connect by pipeline and provides;
It is to adopt pump that medium is injected in the quenching tank fast that immersion liquid is quenched, and then the method for medium being emitted by a valve.
2, workpiece hang hydrojet according to claim 1, immersion liquid and air-cooling combined controlled quenching and cooling method, it is characterized in that, for steel alloy, employing is carried out the quick injection of medium with the whole submergences of workpiece in hydrojet, when martensite has been changed on the top layer of workpiece into, when heart portion or a certain appointed part begin transition temperature near martensite, the medium that injects is emitted fast, workpiece is slowly cooled off in air, and heart portion heat passed and made top layer martensite generation self-tempering to the top layer this moment.
3, workpiece hang hydrojet according to claim 1, immersion liquid and air-cooling combined controlled quenching and cooling method, it is characterized in that, for carbon steel, the process of immersion liquid is carried out in employing in hydrojet, this technology is cooled to the quenching part to quench according to processing requirement always and goes out medium after the temperature at the position that requires performance of part is lower than martensite transformation temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610119244A CN1962893B (en) | 2006-12-07 | 2006-12-07 | Liquid-injection liquid-immersion and air-cooling combined controlled quenching and cooling method for workpieces in suspension mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610119244A CN1962893B (en) | 2006-12-07 | 2006-12-07 | Liquid-injection liquid-immersion and air-cooling combined controlled quenching and cooling method for workpieces in suspension mode |
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| Publication Number | Publication Date |
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| CN1962893A true CN1962893A (en) | 2007-05-16 |
| CN1962893B CN1962893B (en) | 2010-05-12 |
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| CN200610119244A Expired - Fee Related CN1962893B (en) | 2006-12-07 | 2006-12-07 | Liquid-injection liquid-immersion and air-cooling combined controlled quenching and cooling method for workpieces in suspension mode |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407853B (en) * | 2007-12-20 | 2010-08-11 | 北京有色金属研究总院 | Quenching apparatus for detecting hardenability of aluminum alloy ultra-thick plate |
| CN102965480A (en) * | 2012-11-16 | 2013-03-13 | 上海交通大学 | Method and equipment for quenching and cooling thick-walled steel pipe |
| CN109735693A (en) * | 2019-03-21 | 2019-05-10 | 湖北三环车桥有限公司 | Automobile front axle separate type quenching unit |
| CN114231723A (en) * | 2021-12-08 | 2022-03-25 | 二重（德阳）重型装备有限公司 | Quenching method of large-scale shaft forge piece with 3% Ni content |
| CN115232948A (en) * | 2021-06-11 | 2022-10-25 | 北京机电研究所有限公司 | Horizontal shape cooperative regulation and control heat treatment method for steel cylindrical part |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA56189C2 (en) * | 1999-04-20 | 2003-05-15 | Микола Іванович Кобаско | Steels hardening method |
| CN1250748C (en) * | 2002-09-05 | 2006-04-12 | 上海交通大学 | Large alloy steel member water quenching layer built self-tempering process |
| CN1239717C (en) * | 2003-12-30 | 2006-02-01 | 上海交通大学 | Controlled cooling equipment of immersion and spray quenching combined quench-hardening |
| CN2751031Y (en) * | 2004-11-12 | 2006-01-11 | 河南中原特殊钢厂 | Horizontal quenching device for superlong axes parts |
-
2006
- 2006-12-07 CN CN200610119244A patent/CN1962893B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407853B (en) * | 2007-12-20 | 2010-08-11 | 北京有色金属研究总院 | Quenching apparatus for detecting hardenability of aluminum alloy ultra-thick plate |
| CN102965480A (en) * | 2012-11-16 | 2013-03-13 | 上海交通大学 | Method and equipment for quenching and cooling thick-walled steel pipe |
| CN109735693A (en) * | 2019-03-21 | 2019-05-10 | 湖北三环车桥有限公司 | Automobile front axle separate type quenching unit |
| CN115232948A (en) * | 2021-06-11 | 2022-10-25 | 北京机电研究所有限公司 | Horizontal shape cooperative regulation and control heat treatment method for steel cylindrical part |
| CN115232948B (en) * | 2021-06-11 | 2024-02-09 | 中国机械总院集团北京机电研究所有限公司 | Steel cylindrical part horizontal shape cooperative regulation and control heat treatment method |
| CN114231723A (en) * | 2021-12-08 | 2022-03-25 | 二重（德阳）重型装备有限公司 | Quenching method of large-scale shaft forge piece with 3% Ni content |
| CN114231723B (en) * | 2021-12-08 | 2024-01-30 | 二重（德阳）重型装备有限公司 | Quenching method for large shaft forging with 3% Ni content |
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| CN1962893B (en) | 2010-05-12 |
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