CN1680057A - Dummy bar and production thereof - Google Patents
Dummy bar and production thereof Download PDFInfo
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- CN1680057A CN1680057A CN 200510063670 CN200510063670A CN1680057A CN 1680057 A CN1680057 A CN 1680057A CN 200510063670 CN200510063670 CN 200510063670 CN 200510063670 A CN200510063670 A CN 200510063670A CN 1680057 A CN1680057 A CN 1680057A
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Abstract
The invention discloses a dummy bar and production thereof. The dummy bar is constituted by dummy bar head with different size section; club body with different arc or length, band spring and end-piece with different section and length and curvature radius which are fixed on the intrados of the dummy bar. The spring steel material 60Si2Mn, 55SiMnVB, 60CrMnMo used for board spring with different curvature radius which is fixed on the intrados of the dummy bar is produced by processing by heat treatment, quenching and backfire. The invention strengthens the strength and service life of the dummy bar, adjusts arc directly in scene even after the operation cycle, recovers the original curvature radius and maintains the quality without repair.
Description
Technical field:
The present invention relates to metallurgical technology field, exactly it is a kind of dummy bar and manufacturing process thereof, and this technology can be used for the manufacturing of the rigidity elasticity dummy bar of the different circular arcs of leaf spring type structure of multiple structure of various ways conticaster and different radii.
Background technology:
Conticaster is the visual plant of metallurgical continuous casting and dummy bar is the vitals of conticaster.The dummy bar that present conticaster is used all is by dummy bar head basically, and dummy bar, shaft and rear constitute.The shaft part is forged the straight shape steel of two joints usually, after becoming certain arcuation, clod wash is formed by connecting, about 6 meters at every joint, because this structural poles height, the production scene temperature is very high, it is frequent to stretch again, make its arc radius become big, like this to machine on the dummy bar, following machine operation operation brings very big difficulty, at first is that arc becomes and increased production time after big, next is the working strength that increases the workman, and unsafe factor, the generation of various accidents such as this not only influences production efficiency but also can cause bleedout, and is stretching.Arc can not be adjusted after becoming greatly at the scene, the processing of can only rolling off the production line, and the rehabilitation expense height, difficulty is big, and after repairing, life cycle is short, loses serviceability very soon.Thereby the life-span is reduced greatly, influence the normal operation of conticaster.China Patent No. 95236565.0 discloses the utility patent that a kind of name is called " conticaster rigid dummy bar ", and it just opens groove in the dummy bar bottom surface, is used for alleviating the weight of dummy bar.China Patent No. 99224365.3 and China Patent No. 02284123.X disclose the utility model patent that name is called " arc regulating type rigid dummy bar " and " novel dummy ingot device " respectively.Though they improve to some extent to existing dummy bar technology, can't solve the technical problem of dummy bar fully.Restricted application.
Summary of the invention:
The life cycle weak point that quasi-solution of the present invention is determined and had dummy bar now, the technical problem that life-span is low provides one kind of multiple arcs, the rigidity elasticity dummy bar and the manufacturing process of the leaf spring structure of multiple structure, thereby improve the fatigue resistance and the service life of dummy bar greatly, increase economic efficiency.
For solving the technical problem of original dummy bar, the present invention adopts following technical method manufacturing, the stock body that two original joint arc steel are formed by connecting makes into by different arcs, the plurality of sections of different cross section is formed by connecting, importantly press the different cross section of the radius of dress different curvature, the plurality of sections leaf spring of different length in the cambered surface of dummy bar.Dummy bar head is made up of connecting-rod cap and excessive section, and has the cross section of different size.Intensity and rigidity in order to guarantee dummy bar have adopted special Technology for Heating Processing.This Technology for Heating Processing is to realizing that the present invention has important effect.
Advantage of the present invention is: mode of operation that this The application of new technique is easy, improved the intensity of dummy bar widely, elasticity and service life, it can be decreased by heat resistant and wear resistant on different conticasters, frequent stretching can keep not producing plastic deformation for a long time, even after life cycle arrives, can also arbitrarily directly adjust arc at the scene, make it recover original radius of curvature, the effect that can keep long-term production to reach no repair rate and need not overhaul.
Description of drawings:
Fig. 1 is the structural representation of dummy bar of the present invention.
Fig. 2 is an interlude structural representation among the present invention.
Fig. 3 is a middle connecting segment structural representation of the present invention.
Fig. 4 is the leaf spring structural representation in the dummy bar.
Fig. 5 is the technological process of production figure of plate spring member.
Fig. 6 is the hardening heat schematic diagram of plate spring member.
Fig. 7 is the temperature schematic diagram of plate spring member.
The specific embodiment:
Embodiment: generally speaking, manufacturing process of the present invention and prior art have certain something in common, and those skilled in the art all can realize the present invention with reference to the present invention.
Dummy bar among the present invention is the dummy bar head part by the different size cross section; The shaft 4 of different arcs or length; The leaf spring 5 and the rear 7 that are fixed on the dummy bar intrados of different cross section and length and multiple radius of curvature are formed.Dummy bar head is by connecting rod 1, and dummy head 2 and changeover portion 3 are formed, and have the cross section of different size.Dummy ingot shaft part is according to the form difference of conticaster, has the plurality of sections shaft 4 usefulness bearing pins of different cross sections and different arcs or length and the taper bearing pin composition that links together.The shaft of dummy bar is by having different cross section, and the different arcs of different conticaster forms and the plurality of sections of length are formed, and each saves the two ends design and is processed into tongue shape or concavity and also can designs and make " " shape, links together with bearing pin and taper bearing pin between two joints.One section groove is arranged on the extrados of rear, in establish three kinds of forms: hollow recess driving rack c a) driving chain b)).The connecting rod 1 of dummy bar head, changeover portion 3 is between the linkage section 6 of plurality of sections shaft 4, according to different designs, be equipped with several trapezoidal adjustment pieces in every section junction, adjust the piece central longitudinal and adjust bolt and be used to adjust because of the dummy bar after the frequent stretcher strain and return to original arc to being equipped with.The leaf spring that is fixed on the dummy bar intrados has different-thickness, and general thickness is a certain numerical value between 12mm～40mm, width 90mm～160mm, and length is by designing requirement, a certain numerical value between radius of curvature R 4500mm～12000mm.Being fixed on the leaf spring on the dummy bar intrados, is to adopt heavy in section spring steel to process the heat treatment aftershaping through forging machine.Be fixed on the leaf spring of the multiple radius of curvature of all size on the dummy bar intrados, adopted following several spring steel material 60Si
2Mn, 55SiMnVB, 60CrMnMo, when thickness between 20mm～40mm during a certain numerical value and width surpass more than the 100mm, need to adopt the manufacturing of 60CrMnMo material.Each parts of dummy bar are generally selected for use 42CrMo promptly to dig, mill, bore the mode of processing with common machining mode after forging into blank and are formed, and are fixed on the leaf spring spring steel material 60Si of the multiple radius of curvature on the dummy bar intrados
2Mn, 55SiMnVB, 60CrMnMo makes, and handles through heat treatment, adopts the mode of quenching, tempering to realize.Importantly on the intrados of each section, the plurality of sections leaf spring with the different arcs of different cross section is installed, is seen accompanying drawing 4 according to different radius of curvature.
The basic manufacturing process that is fixed on the leaf spring on the dummy bar intrados comprises:
1, a at first is that to select suitable spring material for use generally be 60SiMn, 55SiMnVB, 60CrMnMo particularly works as thickness at 20mm～40mm, need select the 60CrMnMo material for use when width 100mm is above, (we use this kind material widely, particular significant effect) has a uniform section and length through forging the straight plate of blank; B carries out machining by designed requirement; The c heating; D is by the radius of curvature thermoforming of designing requirement; E drops in the hardening media and quenches; The f tempering; G is installed on the intrados of dummy bar.
2, it is as follows plate spring member to be carried out the Quenching Treatment step:
At first, when workpiece is heated to 930 ℃～1020 ℃ a certain numerical value in stove, insulation a period of time is normally during a certain numerical value between 60 minutes or 25 minutes～80 minutes, come out of the stove, put into thermoforming on the special equipment of the mounted bent type of prior adjustment, immersing it has higher, in the hardening media of quenching intensity, hardening media is to be that substrate temperature is controlled between 40 ℃～60 ℃ with mineral oil, common cooling velocity 90 ℃/more than the S, and restrained situation is down constantly between the swing 2.5 minutes～7 minutes during a certain numerical value, better (so-called restrained situation is not allow it to freely swing to effect in the time of 5 minutes, swing but clamp with instrument), in oil, continue to soak 15 minutes～30 minutes a certain numerical value and take out, the quenching hardness value can reach more than the HRC60.As accompanying drawing 6
3, workpiece after the quenching moulding is carried out temper, its process is as follows: the workpiece after the quenching moulding is put into continued to be heated to a certain numerical value insulation 1 hour or 50 minutes～70 minutes a certain numerical value between 480 ℃ or 480 ℃～510 ℃ after tempering furnace is preheated to 460 ℃, whole process needs 100 minutes or 90 minutes～120 minutes a certain numerical value, back water-cooling pattern to the room temperature of coming out of the stove is taken out a certain numerical value between temper number value Hri40～45.As accompanying drawing 7
4, be fixed by bolts on the intrados of dummy bar.
After being installed on the dummy bar through the leaf spring after quenching and the temper, has higher intensity, necessarily toughness and elasticity preferably, and through still returning to original bowed state after frequent the stretching, the dummy bar distortion can not appear, fracture, realize the normal long-time running of conticaster, make this dummy bar, improve several times to tens times than the conventional dummy bar life-span, the handled easily operation is for enterprise brings considerable benefit.
Claims (11)
1, a kind of dummy bar is characterized in that: dummy bar is the dummy bar head part by the different size cross section; The shaft (4) of different arcs or length; The leaf spring (5) and the rear (7) that are fixed on the dummy bar intrados of different cross section and length and multiple radius of curvature are formed.
2, dummy bar according to claim 1 is characterized in that: dummy bar head is by connecting rod (1), and connecting-rod cap (2) and changeover portion (3) are formed, and has the cross section of different size.
3, dummy bar according to claim 1 is characterized in that: dummy ingot shaft part is according to the form difference of conticaster, and the plurality of sections shaft (4) with different cross sections and different arcs or length is with bearing pin and the taper bearing pin composition that links together.
4, dummy bar according to claim 3 is characterized in that: the shaft of dummy bar is by having different cross section, and the different arcs of different conticaster forms and the plurality of sections of length are formed, and each saves the two ends design and is processed into tongue shape or concavity and also can designs and make
Shape links together with bearing pin and taper bearing pin between two joints.
5, dummy bar according to claim 1 is characterized in that: one section groove is arranged on the extrados of rear (7), in establish three kinds of forms: hollow recess driving rack c a) driving chain b)).
6, the described dummy bar of claim 1, it is characterized in that: the connecting rod of dummy bar head (1), changeover portion (3), between each section of linkage section (6) of plurality of sections shaft (4), according to different designs, be equipped with several trapezoidal adjustment pieces in every section junction, adjust the piece central longitudinal and adjust bolt and be used to adjust because of the dummy bar after the frequent stretcher strain and return to original arc to being equipped with.
7, dummy bar according to claim 1, it is characterized in that: the leaf spring that is fixed on the dummy bar intrados has different-thickness, general thickness is arbitrary numerical value between 12mm～40mm, width 90mm～160mm, length is by designing requirement, arbitrary numerical value between radius of curvature R 4500mm～12000mm.
8, dummy bar according to claim 7 is characterized in that: being fixed on the leaf spring on the dummy bar intrados, is to adopt heavy in section spring steel to process the heat treatment aftershaping through forging machine.
9, dummy bar according to claim 7 is characterized in that: be fixed on the leaf spring of the multiple radius of curvature of all size on the dummy bar intrados, adopted following several spring steel material 60Si
2Mn, 55SiMnVB, 60CrMnMo, when thickness between 20mm～40mm during arbitrary numerical value and width surpass more than the 100mm, need to adopt the manufacturing of 60CrMnMo material.
10, a kind of manufacturing process of dummy bar as claimed in claim 5, each parts of dummy bar are generally selected for use 42CrMo to dig, mill, bore the method for processing with common machining mode after forging into blank and are formed, and it is characterized in that: the leaf spring spring steel material 60Si that is fixed on the multiple radius of curvature on the dummy bar intrados
2Mn, 55SiMnVB, 60CrMnMo makes, handle through heat treatment, adopt and quench, the mode of tempering realizes, its hardening heat is that workpiece is heated between 930 ℃～1020 ℃ arbitrary numerical value through after 25 minutes～80 minutes, cool off in the dip quench medium simultaneously after the thermoforming, common cooling velocity is more than 90 ℃/second, and restrained situation is a certain numerical value between the swing 2.5 minutes～7 minutes down constantly, continues to immerse that to be heated between 460 ℃～510 ℃ arbitrary numerical value in the medium after 15 minutes～30 minutes to be installed to room temperature through water-cooled again through 50 minutes～120 minutes temper.
11, the manufacturing process of dummy bar according to claim 10 is characterized in that: adopting the mineral oil of temperature between 40 ℃～60 ℃ when quenching is the moderate hardening media of cooling velocity of matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100636709A CN100525954C (en) | 2004-04-02 | 2005-04-01 | Dummy bar and production thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410021213.9 | 2004-04-02 | ||
| CN200410021213 | 2004-04-02 | ||
| CNB2005100636709A CN100525954C (en) | 2004-04-02 | 2005-04-01 | Dummy bar and production thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1680057A true CN1680057A (en) | 2005-10-12 |
| CN100525954C CN100525954C (en) | 2009-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100636709A Expired - Fee Related CN100525954C (en) | 2004-04-02 | 2005-04-01 | Dummy bar and production thereof |
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| Country | Link |
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| CN (1) | CN100525954C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107268A (en) * | 2011-03-24 | 2011-06-29 | 中冶京诚工程技术有限公司 | Flexible dummy bar |
| CN102242247A (en) * | 2010-05-10 | 2011-11-16 | 湖北神风汽车弹簧有限公司 | Process for quenching steel plate spring |
| CN107641695A (en) * | 2017-09-21 | 2018-01-30 | 江苏省沙钢钢铁研究院有限公司 | A kind of 55Cr3 Heat-Treatments of Steel method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4100365A1 (en) * | 1991-01-04 | 1992-07-09 | Mannesmann Ag | STARTING LINE FOR CONTINUOUS CASTING PLANTS |
| US5752565A (en) * | 1996-06-06 | 1998-05-19 | Vantage One Design, Inc. | Beam blank starter bar |
-
2005
- 2005-04-01 CN CNB2005100636709A patent/CN100525954C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242247A (en) * | 2010-05-10 | 2011-11-16 | 湖北神风汽车弹簧有限公司 | Process for quenching steel plate spring |
| CN102107268A (en) * | 2011-03-24 | 2011-06-29 | 中冶京诚工程技术有限公司 | Flexible dummy bar |
| CN107641695A (en) * | 2017-09-21 | 2018-01-30 | 江苏省沙钢钢铁研究院有限公司 | A kind of 55Cr3 Heat-Treatments of Steel method |
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| Publication number | Publication date |
|---|---|
| CN100525954C (en) | 2009-08-12 |
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Granted publication date: 20090812 Termination date: 20130401 |