CN201376983Y - Vacuum quenching device - Google Patents

Vacuum quenching device Download PDF

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Publication number
CN201376983Y
CN201376983Y CN200920302513U CN200920302513U CN201376983Y CN 201376983 Y CN201376983 Y CN 201376983Y CN 200920302513 U CN200920302513 U CN 200920302513U CN 200920302513 U CN200920302513 U CN 200920302513U CN 201376983 Y CN201376983 Y CN 201376983Y
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CN
China
Prior art keywords
vacuum
boiler tube
pump
heater
quenching
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN200920302513U
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Chinese (zh)
Inventor
胡隆伟
马玲
谢丹贤
龚华
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Guizhou Aerospace Precision Products Co Ltd
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Guizhou Aerospace Precision Products Co Ltd
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Priority to CN200920302513U priority Critical patent/CN201376983Y/en
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Publication of CN201376983Y publication Critical patent/CN201376983Y/en
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Abstract

The utility model discloses a vacuum quenching device which comprises a furnace tube (1); one end of the furnace tube (1) is closed while the other end thereof is open; the open end of the furnace tube (1) is provided with a sealing flange (2); a quenching tank (3) is arranged below the open end of the furnace tube (1); the closed end of the furnace tube (1) is provided with a quenching furnace (4); the furnace tube (1) is connected with an overturning mechanism; and one side of the furnace tube (1) is provided with a vacuum pump (5). The vacuum quenching device adopts the overturning mechanism to realize fast shifting, and shortens shifting time to be less than or equal to 3 seconds from current 12 seconds. The parts of the vacuum quenching device are not in contact with air during heating and cooling processes, thus successfully solving the problem that the parts are polluted by oxygen, hydrogen, carbon and nitrogen. The ultimate vacuum for the vacuum quenching device can reach 1.0 multiplied by 10<-3>Pa in cold condition and working vacuum can reach 3.2 multiplied by 10<-3>Pa at temperature of 950 DEG C. The vacuum quenching device is also characterized by simple operation, high automation degree and strong practicability.

Description

A kind of vacuum hardening device
Technical field
The utility model relates to a kind of vacuum hardening device, belongs to the vacuum hardening technical field.
Background technology
It is little that titanium alloy has density, and advantages of high strength extensively applies to Aeronautics and Astronautics equipment.But titanium alloy is extremely strict to the requirement of Equipment for Heating Processing when thermal treatment, requires component to be subjected to the pollution level minimum of oxygen, hydrogen, carbon, nitrogen in heat treatment process, and guarantees to satisfy relevant regulations after the part thermal treatment.The equipment of in the prior art titanium alloy being heat-treated preferentially adopts vacuum oven, requires the pounds per square inch absolute (psia) in the vacuum oven to be not more than 7 * 10 -2Pa.The titanium alloy solution heat treatment requires transfer time less than 6 seconds.But the vacuum tightness that is used at present, the vacuum water quenching oven of titanium alloy quenching requires and all can not satisfy transfer time the requirement of use.
The utility model content
The purpose of this utility model is, a kind of vacuum hardening device is provided, with satisfy titanium alloy when the thermal treatment to the requirement of vacuum requirements and transfer time, and guarantee that product does not directly contact with air in quenching process, the component of avoiding quenching are subjected to oxygen contamination.
The utility model is to constitute like this: its formation comprises boiler tube, the sealing of boiler tube one end, the other end opening; The opening end of boiler tube is provided with tongued and grooved flanges, and the below of boiler tube opening end is provided with quenching tank, and the boiler tube blind end is provided with quenching furnance; Boiler tube is connected with switching mechanism, and boiler tube one side is provided with vacuum pump.
In the above-mentioned vacuum hardening device, the formation of described switching mechanism comprises the support bar that is located at quenching tank one end, and support bar and boiler tube are hinged, and boiler tube is provided with support plate, support plate is connected with the piston rod of the upset hydro-cylinder that is located at the quenching tank both sides, and the cylinder body of upset hydro-cylinder is connected with quenching tank.
In the aforesaid vacuum hardening device, described quenching furnance bottom is provided with the body of heater roller, and the body of heater roller rolls with the body of heater track and is connected, and body of heater track one end is provided with the body of heater baffle plate, the body of heater baffle plate is connected with the cylinder body of body of heater movable cylinder, and the piston rod of body of heater movable cylinder is connected with quenching furnance.
In the aforesaid vacuum hardening device, described vacuum pump bottom is provided with the pump roller, and the pump roller rolls with the pump track and is connected, and pump track one end is provided with the pump baffle plate, and the pump baffle plate is connected with the cylinder body of pump movable cylinder, and the piston rod of pump movable cylinder is connected with vacuum pump.
In the aforesaid vacuum hardening device, the stage casing of described boiler tube is provided with sealed step, is provided with two watercooling jackets between the opening end of sealed step and boiler tube; Between two watercooling jackets, be provided with vacuum interface, support plate and Connection Block.
In the aforesaid vacuum hardening device, the formation of described quenching furnance comprises furnace shell, and furnace shell is provided with the body of heater mouth, and the top of quenching furnance is provided with movable bell, and travelling oven covers and is provided with thermopair; Be provided with furnace lining in the furnace shell, be provided with well heater in the cavity that furnace lining forms.
Owing to adopted technique scheme, the utility model compared with prior art, the horizontal internal heat type vacuum oven of prior art, do not reach the effect of complete solid solution transfer time about 12s, intensity can not satisfy the technical requirements of product after the timeliness.The utility model has successfully solved short bottleneck problem transfer time.The utility model adopts switching mechanism to realize shifting fast, by 12 seconds existing transfer time, foreshortens to and is less than or equal to 3 seconds transfer time.The utility model is in the heating and cooling process the equal ingress of air not of component, successfully solved the pollution that component are subjected to oxygen, hydrogen, carbon, nitrogen.Product the time is vacuum or argon shield heating in heating, and when cooling, retort turn to 20 products when spending and can not drop out; after fire door sinks to hardening liquid; recharge greater than 1 atmospheric argon gas and wash fire door open, continue to turn to 45～60 degree, product is fallen in the quenching tank and is cooled off.In whole umklapp process, product has completely cut off air, has cut off the air source.The highest attainable vacuum of the utility model when cold conditions can reach 1.0 * 10 -3Pa, the working vacuum during 950 ℃ of insulations can reach 3.2 * 10 -3Pa.Satisfy when carrying out vacuum solid solution thermal treatment, pounds per square inch absolute (psia) allows to be not more than 2.7Pa in the vacuum oven, or relies on the infiltration argon gas (or helium) of limiting the quantity of to maintain 1.33 * 10 -1Pa～13.3Pa scope.The utility model also has simple to operate, and one-time investment is few; Equipment stabilization and level of automation height, advantage such as practical.The utility model also can be used for shrend, oil quenching and the annealing device as ferrous material.The good heat insulating of the utility model device, the characteristics that calorific loss is low, energy-saving effect is obvious.The utility model has been started the new development direction of vacuum quencher, it is a ground zero of titanium alloy vacuum quenching furnance development, adopt the utility model will promote the fast development of vacuum heat treatment furnace, make titanium alloy and goods thereof in the industry manufacturing, play the part of more and more important role.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Synoptic diagram when Fig. 2 is the utility model upset;
Fig. 3 is the structural representation of the utility model boiler tube;
Fig. 4 is the structural representation of the utility model quenching furnance.
Being labeled as in the accompanying drawing: 1-boiler tube, 2-tongued and grooved flanges, 3-quenching tank, the 4-quenching furnance, 5-vacuum pump, 6-support bar, 7-support plate, the 8-hydro-cylinder that overturns, 9-body of heater roller, 10-body of heater track, 11-body of heater baffle plate, 12-body of heater movable cylinder, 13-pump roller, 14-pump track, 15-pump baffle plate, 16-pump movable cylinder, 17-corrugated tube, 20-flange, the 21-sealed step, 22-watercooling jacket, 23-vacuum interface, the 24-Connection Block, 25-furnace shell, 26-body of heater mouth, the movable bell of 27-, the 28-thermopair, 29-furnace lining, 30-well heater.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, but not as the foundation of the utility model being done any restriction.
Embodiment of the present utility model: when making vacuum hardening device of the present utility model, its structure such as Fig. 1～shown in Figure 4, its formation comprises boiler tube 1, boiler tube 1 adopts the ZGCr25Ni20Si2 steel pipe to form thickness 15mm, inwall smooth finish Ra6.3.The sealing of boiler tube 1 one ends, the blind end of boiler tube 1 adopts disposable impact briquetting end enclosure structure, little, the long service life of temperature distortion.The sealing of boiler tube 1 one ends, the other end opening; The stage casing of boiler tube 1 is provided with sealed step 21, is provided with two watercooling jackets 22 between the opening end of sealed step 21 and boiler tube 1; Between two watercooling jackets 22, be provided with vacuum interface 23, support plate 7 and Connection Block 24.Sealed step 21 combines with body of heater mouth 26, and boiler tube 1 opening end is provided with flange 20, and flange 20 is connected with tongued and grooved flanges 2, and an end that is connected with tongued and grooved flanges 2 is a discharge port, four of the flanged sealing bolts of discharge port end.Between the opening end of sealed step 21 and boiler tube 1, be provided with two watercooling jackets 22; Be provided with vacuum interface 23, argon gas interface (not shown), support plate 7 and Connection Block 24 between two watercooling jackets 22, tape spool holds on the Connection Block 24.
The sealing of boiler tube 1 one ends, the other end opening; The opening end of boiler tube 1 is provided with tongued and grooved flanges 2, tongued and grooved flanges 2 band water coolings, and it is vertical with the boiler tube length direction that Inlet and outlet water is chewed direction, is with four bolt openings, manual operation.The below of boiler tube 1 opening end is provided with quenching tank 3, and boiler tube 1 blind end is provided with quenching furnance 4; Boiler tube 1 is connected with switching mechanism, and boiler tube 1 one sides are provided with vacuum pump 5.Switching mechanism adopts stainless material, and hydraulic pressure is adopted in upset, corner 45～60 degree; The formation of switching mechanism comprises the support bar 6 that is located at quenching tank 3 one ends, and support bar 6 is hinged through Connection Block 24 and boiler tube 1, and tape spool holds on the Connection Block 24.Boiler tube 1 is provided with support plate 7, and support plate 7 is hinged with the piston rod of the upset hydro-cylinder 8 that is located at quenching tank 3 both sides, and the cylinder body and the quenching tank 3 of upset hydro-cylinder 8 are hinged.The stroke of upset hydro-cylinder 8 is controlled by travel switch.Quenching furnance 4 bottoms are provided with body of heater roller 9, and body of heater roller 9 rolls with body of heater track 10 and is connected, and body of heater track 10 1 ends are provided with body of heater baffle plate 11, and body of heater baffle plate 11 is connected with the cylinder body of body of heater movable cylinder 12, and the piston rod of body of heater movable cylinder 12 is connected with quenching furnance 4.By body of heater movable cylinder 12 quenching furnance 4 front and back on body of heater track 10 are moved, the stroke of body of heater movable cylinder 12 is controlled by travel switch.Vacuum pump 5 bottoms are provided with pump roller 13, and pump roller 13 rolls with pump track 14 and is connected, and pump track 14 1 ends are provided with pump baffle plate 15, and pump baffle plate 15 is connected with the cylinder body of pump movable cylinder 16, and the piston rod of pump movable cylinder 16 is connected with vacuum pump 5.By pump movable cylinder 16 vacuum pump 5 front and back on pump track 14 are moved, the stroke of pump movable cylinder 16 is controlled by travel switch.
The formation of quenching furnance 4 comprises furnace shell 25, and furnace shell 25 is provided with body of heater mouth 26, and the top of quenching furnance 4 is provided with movable bell 27, and movable bell 27 is provided with thermopair 28; Be provided with furnace lining 29 in the furnace shell 25, be provided with well heater 30 in the cavity that furnace lining 29 forms.
Furnace shell 25 adopts horizontal type structure, and furnace shell forms the rectangular parallelepiped support body with shaped steel and sheet material assembly welding, and furnace shell steel plate assembly welding is on support body, and the support body below has body of heater roller 9.Furnace lining 29 adopts novel energy-saving material to build by laying bricks or stones; Around the body of heater is fully fibrous structure, and full fiber adopts high-quality rafifinal aluminosilicate refractory fiber module (folding compression molding), its unit weight 230kg/m 3, be fixed on the furnace shell 25 with anchoring piece, have advantages such as thermosteresis is little, reliability and durability, obvious energy conservation; At first the fissure of displacement tiles two-layer refractory fiber blanket as adiabatic bed course on furnace shell 25, rafifinal refractory fibre module then is installed, and with the high temperature steel anchoring piece it is anchored on the furnace shell 25 and is made into entire fibre lining, at last at fiber surface spraying one deck high-temperature curing agent.Be provided with well heater 30 in the cavity that furnace lining 29 forms.Well heater 30 adopts bareing electrically heated radiator tube, and mouse cage shape resistance wire and ceramic core are formed, totally 12 of bareing electric heating tubes, and the resistance wire material is OCr21AL6Nb, resistance wire is chosen less surface load, to increase the service life; The layout of heating unit is arranged different power densities, to guarantee temperature uniformity according to the different characteristics at fire door, middle part and rear portion.
Controlling System of the present utility model all adopts Controlling System of the prior art, used Controlling System comprises the mechanical action time variable control that electrical control system, temperature control system, vacuum-control(led) system and programmable controller (PLC) are formed, and can realize automatic routine control and manually control.Temperature control system adopts two table system temperature controls (promptly by Japanese import instrument temperature control, middle strip chart recorder record temperature double as overtemperature alarm), solid state relay PID Power Regulation vacuum-control(led) system is mainly controlled vacuum unit, vacuumometer, inflation system etc., housing is provided with mimic panel, can show the working order of vacuum oven intuitively.The out of order self-diagnostic function of vacuum oven.Programmable controller (PLC) mainly to the vacuum oven body of heater move, mechanical actions such as vacuum system moves, mechanical pump, diffusion pump, magnetic valve, switching mechanism, recycle pump carry out PLC control, programmable controller adopts the CPM2 controller, mechanical action is controlled, can be realized vacuumizing, the full automatic control of actions such as vacuum valve switching, each mechanical action.Quenching tank: mainly by cell body, the recycle system, water-freeing arrangement, charging basket and hoisting appliance.
Method of work of the present utility model as depicted in figs. 1 and 2, the component that needs are quenched are packed into and are heated in the boiler tube that vacuumizes; During quenching boiler tube is overturn, the mouth of pipe of boiler tube is sunk in the hardening liquid of quenching tank fully, open tongued and grooved flanges, make component with the air state of isolation under directly fall into hardening liquid by boiler tube and quench.The heating of boiler tube is by quenching furnance movably boiler tube to be heated; The quenching furnance reach makes boiler tube stretch into the quenching furnance internal heating during heating; Move behind the quenching furnance during quenching, boiler tube is withdrawed from quenching furnance, boiler tube can be overturn.
Specifically: as shown in Figure 1, be provided with support bar 6 in a side of quenching tank 3 and supporting a boiler tube that can overturn 1, be provided with the 4 pairs of boiler tubes 1 of quenching furnance that can on body of heater track 10, move that drive by body of heater movable cylinder 12 at the tail end of boiler tube 1 and heat.Before the heating, vacuum interface 23 soft are connected of the vacuum pump 5 of boiler tube 1 one sides on corrugated tube 17 and boiler tube 1, the air in the boiler tube 1 is extracted out, to reach the vacuum tightness that needs, final vacuum can reach 5 * 10 -3Pa.During heating, quenching furnance 4 entangles the major part of boiler tube 1, makes sealed step 21 on the boiler tube 1 nestle up body of heater mouth 26 edges on the quenching furnance 4, plays location and sealing function.Connect well heater 30 power supplys in the quenching furnance 4 then, the part that boiler tube 1 is stretched in the quenching furnance heats, and the component in the boiler tube 1 also are heated simultaneously.When Heating temperature reaches quenching temperature (quenching temperature is by the thermocouple temperature measurement on the quenching furnance, shows by display unit again), and after being incubated the enough time, cut off heating power supply.Drive quenching furnance 4 by body of heater movable cylinder 12 and behind body of heater track 10, move, boiler tube 1 is shifted out in quenching furnance 4.Then the valve (not showing among the figure) of vacuum interface 23 on the boiler tube 1 is closed, opens vacuum pump 5 through being flexible coupling of corrugated tube 17 and vacuum interface 23, by pump movable cylinder 16 pulling vacuum pumps 5 away from boiler tube 1.Connect upset hydro-cylinder 8 again and make boiler tube 1 upset, boiler tube 1 is when overturning, tie point with support bar 6 and Connection Block 24 is the fulcrum rotation, boiler tube 1 mouth of pipe is sunk in the liquid of hardening liquid in the quenching tank 3, open the sealing bolt of tongued and grooved flanges 2 on boiler tube 1 mouth of pipe then, again the vacuum interface on the boiler tube 1 23 is connected with argon gas pipeline (not shown), to boiler tube 1 applying argon gas, argon gas can be washed the tongued and grooved flanges 2 on boiler tube 1 mouth of pipe open, the direct landing of component that makes the needs quenching in the boiler tube 1 is to hardening liquid, component can't be contacted with air,, avoid component oxidized in quenching process to reach the purpose of vacuum hardening.

Claims (6)

1. vacuum hardening device, it is characterized in that: its formation comprises boiler tube (1), the sealing of boiler tube (1) one end, the other end opening; The opening end of boiler tube (1) is provided with tongued and grooved flanges (2), and the below of boiler tube (1) opening end is provided with quenching tank (3), and boiler tube (1) blind end is provided with quenching furnance (4); Boiler tube (1) is connected with switching mechanism, and boiler tube (1) one side is provided with vacuum pump (5).
2. vacuum hardening device according to claim 1, it is characterized in that: the formation of described switching mechanism comprises the support bar (6) that is located at quenching tank (3) one ends, support bar (6) is hinged with boiler tube (1), boiler tube (1) is provided with support plate (7), support plate (7) is connected with the piston rod of the upset hydro-cylinder (8) that is located at quenching tank (3) both sides, and the cylinder body of upset hydro-cylinder (8) is connected with quenching tank (3).
3. vacuum hardening device according to claim 1, it is characterized in that: described quenching furnance (4) bottom is provided with body of heater roller (9), body of heater roller (9) rolls with body of heater track (10) and is connected, body of heater track (10) one ends are provided with body of heater baffle plate (11), body of heater baffle plate (11) is connected with the cylinder body of body of heater movable cylinder (12), and the piston rod of body of heater movable cylinder (12) is connected with quenching furnance (4).
4. vacuum hardening device according to claim 1, it is characterized in that: described vacuum pump (5) bottom is provided with pump roller (13), pump roller (13) rolls with pump track (14) and is connected, pump track (14) one ends are provided with pump baffle plate (15), pump baffle plate (15) is connected with the cylinder body of pump movable cylinder (16), and the piston rod of pump movable cylinder (16) is connected with vacuum pump (5).
5. vacuum hardening device according to claim 1 and 2 is characterized in that: the stage casing of described boiler tube (1) is provided with sealed step (21), is provided with two watercooling jackets (22) between the opening end of sealed step (21) and boiler tube (1); Between two watercooling jackets (22), be provided with vacuum interface (23), support plate (7) and Connection Block (24).
6. vacuum hardening device according to claim 1, it is characterized in that: the formation of described quenching furnance (4) comprises furnace shell (25), furnace shell (25) is provided with body of heater mouth (26), and the top of quenching furnance (4) is provided with movable bell (27), and movable bell (27) is provided with thermopair (28); Be provided with furnace lining (29) in the furnace shell (25), be provided with well heater (30) in the cavity that furnace lining (29) forms.
CN200920302513U 2009-04-23 2009-04-23 Vacuum quenching device Expired - Fee Related CN201376983Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920302513U CN201376983Y (en) 2009-04-23 2009-04-23 Vacuum quenching device

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Application Number Priority Date Filing Date Title
CN200920302513U CN201376983Y (en) 2009-04-23 2009-04-23 Vacuum quenching device

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CN201376983Y true CN201376983Y (en) 2010-01-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103305667A (en) * 2012-03-13 2013-09-18 天津海鸥表业集团有限公司 Vacuum heat treatment equipment
CN110579293A (en) * 2019-10-23 2019-12-17 中航飞机起落架有限责任公司 method for detecting quenching temperature of structural member in vacuum heat treatment
CN112609057A (en) * 2020-11-30 2021-04-06 常熟市欧迪管业有限公司 Multi-station vacuum annealing furnace for titanium pipe machining

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103305667A (en) * 2012-03-13 2013-09-18 天津海鸥表业集团有限公司 Vacuum heat treatment equipment
CN110579293A (en) * 2019-10-23 2019-12-17 中航飞机起落架有限责任公司 method for detecting quenching temperature of structural member in vacuum heat treatment
CN110579293B (en) * 2019-10-23 2021-06-22 中航飞机起落架有限责任公司 Method for detecting quenching temperature of structural member in vacuum heat treatment
CN112609057A (en) * 2020-11-30 2021-04-06 常熟市欧迪管业有限公司 Multi-station vacuum annealing furnace for titanium pipe machining

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100106

Termination date: 20140423