CN203602673U - Quenching machine applied to mandril thermal treatment - Google Patents
Quenching machine applied to mandril thermal treatment Download PDFInfo
- Publication number
- CN203602673U CN203602673U CN201320850642.1U CN201320850642U CN203602673U CN 203602673 U CN203602673 U CN 203602673U CN 201320850642 U CN201320850642 U CN 201320850642U CN 203602673 U CN203602673 U CN 203602673U
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- Prior art keywords
- quenching
- plug
- arm
- material loading
- bin
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- Expired - Lifetime
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- 238000010791 quenching Methods 0.000 title claims abstract description 136
- 230000000171 quenching effect Effects 0.000 title claims abstract description 136
- 238000007669 thermal treatment Methods 0.000 title abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- 238000000034 method Methods 0.000 description 16
- 238000013461 design Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 238000006748 scratching Methods 0.000 description 3
- 230000002393 scratching effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000012237 artificial material Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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- 239000004753 textile Substances 0.000 description 1
- 238000004861 thermometry Methods 0.000 description 1
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Images
Abstract
The utility model provides a quenching machine applied to mandril thermal treatment. The quenching machine applied to the mandril thermal treatment comprises a charging basket, a loading arm, a material frame, a supporting mandril, a first hydraulic cylinder, a quenching arm, a second hydraulic cylinder and a water tank, wherein the loading arm is arranged at a lateral opening of the charging basket, the material frame has an inlet end and an outlet end, the loading arm is hinged to the inlet end of the material frame and the inlet end is located in a rotary region of the loading arm; the first hydraulic cylinder is connected to the loading arm, the quenching arm is hinged to the outlet end of the material frame and the outlet end is located in a rotary region of the quenching arm; the second hydraulic cylinder is connected with the quenching arm; the water tank is arranged at the outlet end of the material frame, and the rotary region of the quenching arm passes through the water tank. The quenching machine provided by the utility model can automatically load and unload materials, so that the loading time can be shortened to the maximum extent.
Description
Technical field
The utility model relates to metal heat treatmet field, belongs to a kind of quenching processing system of plug, and in particular to the automatic quenching machine tool for cored hardening, one is applied to the heat treated quenching press of plug.
Background technology
Steel is preheating to proper temperature more than critical temperature, and after insulation, the cooling operating procedure with acquisition martensitic stucture is called quenching fast.The object of quenching is to improve hardness, intensity, wear resistance to meet the use properties of part.The quenching of steel be most important in thermal treatment process, be also purposes operation the most widely, as the parts such as instrument, measurer, mould, bearing, spring and automobile, tractor, diesel engine, cutting machine tool, pneumatic tool, boring mechanic, agricultural machinery and implement, petroleum machinery, chemical machinery, textile manufacturing machine, aircraft are all using quenching technology.Traditional hardening step is, in fixing quenching tank, utilizes the quenching workpiece of repeatedly slinging to put into quenchant and realizes stirring to quenchant, makes its temperature even, thereby reach good quenching effect.
Traditional cored hardening generally adopts overhead traveling crane material loading, adopts overhead traveling crane that plug is sling, and puts into quenchant, and then by Artificial Control, the plug of repeatedly slinging, repeats to put into quenchant, thereby reaches the object that makes plug fast cooling.
In traditional cored hardening mode, adopt the overhead traveling crane plug material loading of slinging, due to the problem of processing set-up, from forging machine to quenching machine, quenching tank distant, in this process, the each material loading of overhead traveling crane needs manual intervention, the artificial material loading position of adjusting, manual cleaning, increase each material loading time, the quenching that completes an entire flow needs the repeatedly manual intervention plug of slinging, repeat to put into quenchant, this manual intervention meeting increases material loading or lifting time, plug temperature is declined, before entering quenching press while being often difficult to arrive cored hardening, temperature can not be lower than the requirement of 850 degrees Celsius, affect quenching quality.
Utility model content
The utility model will solve in the existing quenching stage, and the lifting time that adopts crane feeding to bring is long, and plug temperature does not reach the temperature required problem of quenching.The utility model provides one to be applied to the heat treated quenching press of plug, to improve quenching quality.
For this reason, the utility model proposes one and be applied to the heat treated quenching press of plug, described in be applied to the heat treated quenching press of plug and comprise:
Charging basket, described charging basket comprises the charging basket supporting part of supporting plug and the lateral openings that is positioned at gap, charging basket supporting part;
Material loading arm, is arranged on the lateral openings place of described charging basket, and described material loading arm comprises: the material loading arm swing portion at top and be connected to the material loading arm supporting part of described material loading arm swing portion bottom, and described material loading arm supporting part has the bearing surface of support plug;
Bin, supports plug, and described bin has inlet end and exit end,
Described material loading arm is hinged on the inlet end of described bin, and described inlet end is positioned at the pivot region of described material loading arm;
The first hydro-cylinder, connects described material loading arm;
Quenching arm, is hinged on the exit end of described bin, and described quenching arm comprises: the quenching arm swing portion at top and be connected to the quenching arm supporting part of described quenching arm swing portion bottom, and described quenching arm supporting part has the bearing surface of support plug; Described exit end is positioned at the pivot region of described quenching arm;
The second hydro-cylinder, connects described quenching arm;
Tank, is arranged on the exit end of described bin, and the pivot region of described quenching arm is through described tank.
Further, described quenching arm is installed on by rotating shaft in the bearing support being fixed on bin, in described rotating shaft, position detecting device is installed.
Further, described position detecting device is angular encoder.
Further, described charging basket supporting part is chain, and described chain is circular arc, the number of described chain is multiple, the length direction that multiple chains are placed along plug side by side interval arranges, and between adjacent two chains, forms described lateral openings, and described material loading arm is between adjacent two chains.
Further, described bin has guide rail, and described bin is by described guide supporting plug, and described guide rail is for being obliquely installed, and the vergence direction of described guide rail is that described inlet end is higher than described exit end.
Further, on described tank, have and be convenient to the angle that described quenching arm stretches into.
Further, the number of described quenching arm is multiple, described quenching arm supporting part be shaped as circular arc, the length direction that multiple described quenching arms are placed along plug side by side interval arranges.
Further, the number of described material loading arm is multiple, described material loading arm supporting part be shaped as circular arc, the length direction that multiple described material loading arms are placed along plug side by side interval arranges.
Further, adjacent two described material loading arms be spaced apart 0.5 meter to 1.5 meters, adjacent two described quenching arms be spaced apart 0.5 meter to 1.5 meters.
Further, the top of described bin has the cover plate covering on described guide rail, and described cover plate is arranged between described inlet end and described exit end, and described the second hydro-cylinder is positioned under described cover plate.
Thereby the utility model is placed into plug on bin by the first Driven by Hydraulic Cylinder material loading arm swing, by bin, plug is transferred on quenching arm, quenching arm drives plug repeatedly to extend in tank by the driving of the second hydro-cylinder, completes Repeat quenching.Whole process is that machine automatization completes completely, participate in without overhead traveling crane, thereby also reduce time of artificial lifting, can reduce to greatest extent the material loading time, thereby accelerate the process of quenching, before entering quenching press while guaranteeing cored hardening, temperature is not less than the requirement of 850 degrees Celsius, thereby has guaranteed quenching quality.
And then feeding process completes automatically, without operator's manual intervention, greatly reduce operator's labour intensity, avoid operator to be heated and expect baking, improve its working conditions, increase security.
And then, adopt the design forms of many group quenching arms, can avoid the flexural deformation of long plug in feeding process, and avoid plug and equipment scratching and cause quenching press damage.
And then, in the utility model, guide rail on bin is arranged to certain inclination angle, plug can lean on gravity naturally to tumble or move to exit end from the inlet end of bin, this process participates in without driving mechanism, has reduced investment and the occupation of land of equipment, has reduced the consumption of the energy, now, for the lifting of overhead traveling crane, reduce the material loading time.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram that is applied to the heat treated quenching press of plug of the utility model embodiment;
Fig. 2 is the side-looking structural representation that is applied to the heat treated quenching press of plug of the utility model embodiment;
Fig. 3 is the sectional structure of the A-A of Fig. 1.
Drawing reference numeral explanation:
1, the material loading arm 110 that tank 2 charging basket 3 bin 5 angle 6 material loading arm 7 rotating shaft 8 first hydro-cylinder 9 bearing support 10 chains 11, quenching arm 12, cover plate 13, rotating shaft 14, actuating arm 15, the second hydro-cylinder 16 bearing support 18 supplied materials proofing unit 19 supplied materials temperature-detecting device 20 position detecting device 21 water temperature control device 31 guide rail 40 concrete pedestal 50 plugs 60 swing to bin top swings to the quenching arm of bin top
Embodiment
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast accompanying drawing embodiment of the present utility model is described.
As shown in Figure 1, Figure 2 and Figure 3, being applied to the heat treated quenching press of plug comprises:
Charging basket 2, described charging basket 2 comprises the charging basket supporting part of supporting plug and the lateral openings that is positioned at gap, charging basket supporting part, and charging basket 2 can be connected with cold bed, and plug is directly transported to charging basket 2 places by cold bed, do not need again workpiece to be sling, this process has been saved the program of one overhead traveling crane lifting again;
Material loading arm 6, is arranged on the lateral openings place of described charging basket, and described material loading arm 6 comprises: the material loading arm swing portion at top and be connected to the material loading arm supporting part of described material loading arm swing portion bottom, and described material loading arm supporting part has the bearing surface of support plug;
Described material loading arm 6 is hinged on the inlet end of described bin by rotating shaft 7, rotating shaft 7 is used bearing support 9 to be fixed on bin, described inlet end is positioned at the pivot region of described material loading arm, after material loading arm 6 lifts, the material loading arm that the material loading arm 60(that swings to bin top swings to bin top is a working order of material loading arm 6) for the plug of charging basket is lifted and is transported to bin 3;
The first hydro-cylinder 8, connects described material loading arm 6, for driving the swing of material loading arm 6;
Quenching arm 11, is hinged on the exit end of described bin 3, and described quenching arm 11 comprises: the quenching arm swing portion at top and be connected to the quenching arm supporting part of described quenching arm swing portion bottom, and described quenching arm supporting part has the bearing surface of support plug; Described exit end is positioned at the pivot region of described quenching arm;
The second hydro-cylinder 15, connects described quenching arm 11, drives quenching arm 11 to swing;
Tank 1, be arranged on the exit end of described bin 3, as Fig. 2 and Fig. 3, the pivot region of described quenching arm 11 is through described tank 1, quenching arm 11 is for putting into tank 1 Repeat quenching by the plug out of the exit end from bin 3, be that plug is rolled on quenching arm 11, quenching arm 11 swings, and enters in water with plug 50, arrive after certain hour, quenching arm 11 turns round, and returns to palikinesia afterwards 2-3 time with plug water outlet.
The swing height of quenching arm 11 is higher than bin, so that after having quenched, swing to bin 3(exit end) the quenching arm 110(of the top quenching arm 110 that swings to bin top is working ordeies for quenching arm 110) plug 50 is turned back to bin, plug after quenching just can be transported away, now, owing to having completed quenching, even if use overhead traveling crane that the plug after quenching is transported and also can not affected quenching process, can not affect quenching quality.Quenching arm 11 had both played the effect with plug 50 Repeat quenchings, also played plug after quenching is completed and be transported to the effect of bin, and the two can free of discontinuities be connected, and like this, can save again the process of an overhead traveling crane lifting, has improved operating efficiency.
Further, as Fig. 2 and Fig. 3, described quenching arm 11 is installed in the bearing support 16 being fixed on bin by rotating shaft 13.Quenching arm 11 is fixed in rotating shaft 13, can rotate with rotating shaft 13.Actuating arm 14 is installed in rotating shaft 13 simultaneously, connects second hydro-cylinder 15, the second hydro-cylinder 15 the other ends and be installed on concrete pedestal 40 on actuating arm 14, hydro-cylinder 15 is flexible drives rotating shaft 13 to rotate.
In described rotating shaft 13, position detecting device 20 is installed, for detection of the turned position of quenching arm 11, the highest and extreme lower position in extreme higher position and the quenching process of major control quenching arm 11, thereby position and the quenching process of grasp plug.Further, described position detecting device 20 is angular encoder, like this, easy for installation, takies volume little.
Further, as Fig. 2 and Fig. 3, described charging basket supporting part is chain 10, described chain is circular arc, as Fig. 1, the number of described chain 10 is multiple, the length direction that multiple chains are placed along plug 50 interval and be arrangeding in parallel side by side, between adjacent two chains, form described lateral openings, described material loading arm 6 is between adjacent two chains 10.Adopt chain 10 support plugs, be convenient to the swing of material loading arm 6, be convenient to installation and the maintenance of chain.
Further, as Fig. 3, described bin 3 has guide rail 31, described bin 3 supports plug by described guide rail 31, described guide rail 31 is for being obliquely installed, the vergence direction of described guide rail is that described inlet end is higher than described exit end, like this, after lifting, material loading arm plug is placed on guide rail 31, now material loading arm can be with speed, plug is subject to the speed of material loading arm or the impact of inertia, also can fall on guide rail 31 with certain speed, because guide rail is what tilt, plug can move to exit end along the guide rail tilting from inlet end with certain initial velocity, enter in quenching arm 11.This process participates in without exterior mechanical, relies on gravity to complete, and has saved again the process of overhead traveling crane lifting, has accelerated the material loading time, has improved operating efficiency.
After quenching completes, plug 50 is turned back bin by quenching arm 11, and because quenching arm 11 has certain reversal rate, plug 50 also can move to inlet end from exit end along the guide rail tilting with certain initial velocity, finally can rest on guide rail 3, then wait for that overhead traveling crane hangs away.In order to guarantee that plug can move to exit end along the guide rail tilting from inlet end with certain initial velocity, drop on quenching arm 11, guarantee that again plug moves to inlet end from exit end along the guide rail tilting with certain initial velocity, finally can rest on guide rail 3, it is for example linear that the utility model is arranged to guide rail 31, the angle of inclination of guide rail is for example 3 to 8 degree (being for example 5 degree), can not be too fast with the speed of controlling plug, also to guarantee that plug overcomes friction resistance, can move to exit end from inlet end, can also guarantee that oppositely mobile rear plug rests on guide rail.
Further, as Fig. 3, on described tank 1, have and be convenient to the angle 5 that described quenching arm 11 stretches into, enter in tank so that quenching arm 11 can swing.On tank, there is residual water discharge equipment, for the cleaning of iron scale.Residual water discharge equipment is by valve, pump, and pipe fitting forms.In tank 1, be also provided with water temperature control device 21, water temperature control device 21 is mainly made up of temperature detector, wet-pit, working shaft, valve, pipeline, water level gauge etc.Temperature detector detects water temperature, when water temperature reaches in limited time, by wet-pit, water high temperature is discharged, and by working shaft, water lower temperature is injected to tank, with the temperature of the required water coolant that guarantees to quench.Water supply and sewage is all connected to workshop, equipment place turbid circulating water pumping plant.
Further, as Fig. 1, the number of described quenching arm is multiple, described quenching arm supporting part be shaped as circular arc, the length direction that multiple described quenching arms are placed along plug interval and be arrangeding in parallel side by side.Simultaneously, along with the development of forging process, the length of plug lengthens gradually, in the time that plug length approaches or reaches 20m, high-temperature core rod adopts overhead traveling crane material loading just very difficult again, even can cause the serious bending of plug, and easily make plug and quenching tank generation scratching in the time using overhead traveling crane that long plug is put into tank.Adopt the design forms of many group quenching arms, with respect to the lifting of overhead traveling crane, can avoid the flexural deformation of long plug in feeding process, and avoid plug and equipment scratching and cause quenching press damage.
Further, as Fig. 1, the number of described material loading arm 6 is multiple, described material loading arm supporting part be shaped as circular arc, the length direction that multiple described material loading arms are placed along plug interval and be arrangeding in parallel side by side, can avoid the flexural deformation of long plug in feeding process.
Further, adjacent two described material loading arms be spaced apart 0.5 meter to 1.5 meters, adjacent two described quenching arms be spaced apart 0.5 meter to 1.5 meters, like this, when approaching or reach 20m for plug length, the diameter range of plug is Φ 140mm to Φ 260mm, and plug reasonable stress, prevents flexural deformation.If while being applied to the plug of other sizes, the diameter of adjusting accordingly material loading arm and quenching brachiocylloosis place in the time of design is just passable.
Further, as Fig. 3, the top of described bin has the cover plate 12 covering on described guide rail 31, and described cover plate is arranged between described inlet end and described exit end.Cover plate only covers a part of guide rail, walks on stage for hang material as operator.Cover plate also not exclusively covers guide rail, and the coverage of cover plate puts into outflow space on guide rail by plug will to quenching arm 11.Described the second hydro-cylinder 15 is positioned under described cover plate 12, and the second hydro-cylinder 1 can be subject to the protection of cover plate 12.
On charging basket 2, there is supplied materials proofing unit 18 and supplied materials temperature-detecting device 19, detect supplied materials state.Supplied materials proofing unit adopts infrared rays position detection, and supplied materials temperature-detecting device adopts infrared thermometry.
The utility model can be connected supplied materials proofing unit 18 and supplied materials temperature-detecting device 19, position detecting device, water temperature control device 20, material loading arm, quenching arm, the first hydro-cylinder, these devices of the second hydro-cylinder with computer, thereby strictly control the position of plug, the temperature of tank, guarantees quenching quality.
The foregoing is only the schematic embodiment of the utility model, not in order to limit scope of the present utility model.For each integral part of the present utility model can mutually combine under the condition of not conflicting; any those skilled in the art; do not depart from equivalent variations and the modification under the prerequisite of design of the present utility model and principle, done, all should belong to the scope of the utility model protection.
Claims (10)
1. be applied to the heat treated quenching press of plug, it is characterized in that, described in be applied to the heat treated quenching press of plug and comprise:
Charging basket, described charging basket comprises the charging basket supporting part of supporting plug and the lateral openings that is positioned at gap, charging basket supporting part;
Material loading arm, is arranged on the lateral openings place of described charging basket, and described material loading arm comprises: the material loading arm swing portion at top and be connected to the material loading arm supporting part of described material loading arm swing portion bottom, and described material loading arm supporting part has the bearing surface of support plug;
Bin, supports plug, and described bin has inlet end and exit end,
Described material loading arm is hinged on the inlet end of described bin, and described inlet end is positioned at the pivot region of described material loading arm;
The first hydro-cylinder, connects described material loading arm;
Quenching arm, is hinged on the exit end of described bin, and described quenching arm comprises: the quenching arm swing portion at top and be connected to the quenching arm supporting part of described quenching arm swing portion bottom, and described quenching arm supporting part has the bearing surface of support plug; Described exit end is positioned at the pivot region of described quenching arm;
The second hydro-cylinder, connects described quenching arm;
Tank, is arranged on the exit end of described bin, and the pivot region of described quenching arm is through described tank.
2. the heat treated quenching press of plug that is applied to as claimed in claim 1, is characterized in that, described quenching arm is installed on by rotating shaft in the bearing support being fixed on bin, in described rotating shaft, position detecting device is installed.
3. the heat treated quenching press of plug that is applied to as claimed in claim 2, is characterized in that, described position detecting device is angular encoder.
4. the heat treated quenching press of plug that is applied to as claimed in claim 1, it is characterized in that, described charging basket supporting part is chain, described chain is circular arc, the number of described chain is multiple, the length direction that multiple chains are placed along plug side by side interval arranges, and between adjacent two chains, forms described lateral openings, and described material loading arm is between adjacent two chains.
5. the heat treated quenching press of plug that is applied to as claimed in claim 1, it is characterized in that, described bin has guide rail, and described bin is by described guide supporting plug, described guide rail is for being obliquely installed, and the vergence direction of described guide rail is that described inlet end is higher than described exit end.
6. the heat treated quenching press of plug that is applied to as claimed in claim 4, is characterized in that, has and be convenient to the angle that described quenching arm stretches on described tank.
7. the heat treated quenching press of plug that is applied to as claimed in claim 1, is characterized in that, the number of described quenching arm is multiple, described quenching arm supporting part be shaped as circular arc, the length direction that multiple described quenching arms are placed along plug side by side interval arranges.
8. the heat treated quenching press of plug that is applied to as claimed in claim 7, is characterized in that, the number of described material loading arm is multiple, described material loading arm supporting part be shaped as circular arc, the length direction that multiple described material loading arms are placed along plug side by side interval arranges.
9. the heat treated quenching press of plug that is applied to as claimed in claim 8, is characterized in that, adjacent two described material loading arms be spaced apart 0.5 meter to 1.5 meters, adjacent two described quenching arms be spaced apart 0.5 meter to 1.5 meters.
10. the heat treated quenching press of plug that is applied to as claimed in claim 5, it is characterized in that, the top of described bin has the cover plate covering on described guide rail, and described cover plate is arranged between described inlet end and described exit end, and described the second hydro-cylinder is positioned under described cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850642.1U CN203602673U (en) | 2013-12-20 | 2013-12-20 | Quenching machine applied to mandril thermal treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850642.1U CN203602673U (en) | 2013-12-20 | 2013-12-20 | Quenching machine applied to mandril thermal treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203602673U true CN203602673U (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320850642.1U Expired - Lifetime CN203602673U (en) | 2013-12-20 | 2013-12-20 | Quenching machine applied to mandril thermal treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203602673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643019A (en) * | 2013-12-20 | 2014-03-19 | 北京京诚之星科技开发有限公司 | Quenching machine applied to mandrel heat treatment |
-
2013
- 2013-12-20 CN CN201320850642.1U patent/CN203602673U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643019A (en) * | 2013-12-20 | 2014-03-19 | 北京京诚之星科技开发有限公司 | Quenching machine applied to mandrel heat treatment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20140521 |