CN108004379B - The application method of quenching unit - Google Patents
The application method of quenching unit Download PDFInfo
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- CN108004379B CN108004379B CN201711238579.5A CN201711238579A CN108004379B CN 108004379 B CN108004379 B CN 108004379B CN 201711238579 A CN201711238579 A CN 201711238579A CN 108004379 B CN108004379 B CN 108004379B
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- metal works
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- rollover stand
- vacuum furnace
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
Abstract
The invention belongs to technical field of heat treatment, specifically disclose a kind of application method of quenching unit, comprising the following steps: (1) check device；(2) metal works are placed in preheating furnace and are preheated；(3) metal works that preheating is completed are placed on rollover stand, open electric heating wire and vacuum pump, the gas in vacuum furnace is extracted out；(4) after metal works are heated to fixed temperature, the metal works heated are artificially transferred to oil quenching bath, and preheated metal works are added on rollover stand；(5) start vacuum pump, gas bleeding after being automatically replenished new metal works in vacuum furnace；(6) after a period of time, pressure valve is again turned on, and the metal works on rollover stand are transferred to oil quenching bath, and the metal works in preheating furnace are transferred on rollover stand, is so recycled.Using the present patent application method, it can be automatically replenished charging, metal works are sent into oil quenching bath automatically after the completion of metal works heating, improve processing efficiency.
Description
Technical field
The invention belongs to technical field of heat treatment more particularly to a kind of application methods of quenching unit.
Background technique
It needs that metal works are carried out the heat treatment such as to quench before finishing metal works, quenching is first to add product
Heat arrives certain temperature, the preheated one-section time, is then heated to critical-temperature or more, heat preservation a period of time, make product all or
Then partial saturation is as cold as Ms or less (or isothermal near Ms) progress martensite to be greater than the cooling rate of critical cooling rate fastly
The heat treatment process of (or bainite) transformation.
Common heating furnace is mostly push-down heating furnace in heat treatment, which relies on the screw of furnace tail at work
Pusher moves back and forth, and metal works are pushed into heat in furnace by the feed inlet of stove tail portion；Discharge method is discharged using side,
When discharging, discharging door is opened, and the push rod of extractor, which reaches, releases entire siege in furnace, then tilts siege, will be in siege
Metal works fall into oil quenching bath and quench.Since during pan feeding and discharging, which will open corresponding furnace
Door, or even need entire siege releasing furnace body in discharging, a large amount of cold airs suckings and steam leakage are caused, is resulted in huge
Big thermal loss, so the thermal efficiency is very low.
To solve the above-mentioned problems, the Chinese invention patent of Publication No. CN102206734A discloses a kind of novel quenching
Furnace, including furnace body, quenching unit and fume extractor, the fume extractor are set to furnace body front end；The quenching unit and furnace body
Discharge port be tightly connected, and the furnace body discharge port be equipped with discharging switch and driving discharging switch make periodically open and close go out
Expect driving mechanism for switch.The invention can be avoided energy loss of traditional heating furnace during charging, discharging, save the energy.
But have the following problems: 1, part must be preheated during use, heating in furnace body is sent into after preheating, and it is fixed to need after heating
When open discharging switch, operate it is cumbersome.2, artificially supplement charging always is needed.
Summary of the invention
The purpose of the present invention is to provide a kind of application methods of quenching unit, can be automatically replenished charging, metal works
Metal works are sent into oil quenching bath automatically after the completion of heating.
In order to achieve the above object, base case of the invention are as follows: the application method of quenching unit, quenching unit on to
Under successively include preheating furnace, vacuum furnace and oil quenching bath, preheating furnace is equipped with smoke evacuation valve, and it is oblique that charging is equipped in preheating furnace
The upper wall of section, vacuum furnace is equipped with unilateral gate, feeds the side that oblique section is located at unilateral gate, being fixed on unilateral gate prevents from feeding
The baffle that metal works slide in oblique section；Rollover stand is equipped in vacuum furnace, rollover stand is equipped with electric heating wire, rollover stand packet
Rotating cylinder and four pieces of returning face plates that unilateral gate can be jacked up are included, returning face plate is uniformly fixed in the circumferential direction of rotating cylinder；Drum rotation connection
In vacuum furnace, the distance of rotating cylinder to unilateral gate is less than the length of returning face plate；The left side of vacuum furnace lower wall be equipped with
The right side of the pressure valve of oil quenching bath connection, vacuum furnace lower wall is equipped with discharging structure, and discharging structure includes spring, is fixed on
The support plate of vacuum drying oven lower wall and the voussoir adjacent with vacuum furnace right side wall, voussoir are slidably connected under vacuum furnace
Wall；One end of spring is connected on voussoir, and the other end connects on the supporting plate；It is equipped in vacuum furnace for limiting rollover stand
The buffer structure of rotation, buffer structure include the brake plate being hinged on the right side of vacuum furnace inner wall, brake plate and heating in vacuum
Tension spring is connected between furnace inner wall；Vacuum furnace is externally provided with vacuum pump, and the import of vacuum pump is connected to vacuum furnace, vacuum
The outlet of pump is connected to preheating furnace；
The application method of quenching unit the following steps are included:
(1) before using the present apparatus, each components of first check device, it is ensured that device can operate normally；
(2) it will be preheated in the oblique section of charging that metal works are placed on preheating furnace；
(3) metal works that preheating is completed are placed on rollover stand, metal works is made to be located at two pieces above rollover stand
Between returning face plate；Electric heating wire and vacuum pump are opened, vacuum pump extracts the gas in vacuum furnace out；
(4) after metal works are heated to fixed temperature, the metal works heated are artificially transferred to oil quenching bath, and
Preheated metal works are added on rollover stand simultaneously；After metal works enter oil quenching bath, a large amount of high temperature oil is generated
Cigarette, after a period of time, the pressure of oil quenching bath increases, and pressure valve automatically opens, and high-temperature oil smoke enters in vacuum furnace and pushes away
Dynamic returning face plate moves to the right, and the metal works on returning face plate are fallen, and is transferred in oil quenching bath；At the same time, in preheating furnace
Metal works add on returning face plate；
(5) start vacuum pump after being automatically replenished new metal works in vacuum furnace, by the gas in vacuum furnace
Extraction；
(6) after a period of time, pressure valve is again turned on, and high-temperature oil smoke pushes rollover stand movement, the metal work on rollover stand
Part is transferred to oil quenching bath, and the metal works in preheating furnace are transferred on rollover stand, so recycles.
The working principle of this base case is: using before the present apparatus, checking device, it is ensured that device can be normal
It will be preheated in the oblique section of charging that metal works are placed on preheating furnace after operation.Gold is put on toward the rollover stand of vacuum furnace
After metal work-pieces, the state that vacuum furnace is evacuated to near vacuum using vacuum pump is all needed.When using this quenching unit for the first time,
Preheated metal work is placed on rollover stand, between two pieces of returning face plates for being located at metal works above rollover stand, then
Electric heating wire and vacuum pump are opened, vacuum pump extracts the gas in vacuum furnace out, and vacuum furnace is made to be in an approximation
In the environment of vacuum, electric heating wire transfers heat to metal works by way of contact.When metal works are heated to fix
After temperature, artificially the metal works heated are transferred in oil quenching bath, and preheated metal works are added to and are turned over
On pivoted frame.After metal works enter oil quenching bath, oily temperature is increased, and generates a large amount of high-temperature oil smoke, the pressure in oil quenching bath
It is gradually increased by force, after a period of time, the pressure in oil quenching bath increases to the preset value of pressure valve, and pressure valve is opened, quenching oil
Pond is connected to vacuum furnace, and due near vacuum in vacuum furnace, there are huge between oil quenching bath and vacuum furnace
Pressure difference, the high-temperature oil smoke in oil quenching bath enters in vacuum furnace, and high-temperature oil smoke is contacted with returning face plate, pushes rollover stand
The returning face plate of upside moves to the right, and the metal works on returning face plate slide downwards along returning face plate, has fallen on voussoir.In gold
Under the gravity of metal work-pieces, voussoir overcomes the active force of spring and slide downward, voussoir are transferred to outside vacuum furnace, due to
For inclined-plane and at this time without the blocking of heating in vacuum furnace sidewall, metal works slide under gravity for the upper surface of voussoir
Into oil quenching bath, after metal works are fallen, in the active force of spring, voussoir resets.At the same time, in the mistake of returning face plate movement
Cheng Zhong, returning face plate are gradually contacted with unilateral gate, and returning face plate applies active force to unilateral gate, open unilateral gate, at this time unilateral gate
On baffle far from the metal works for feeding oblique section, due to the blocking without baffle, the metal works fed in oblique section are downward
Sliding, by unilateral gate subsequently into vacuum furnace, metal works are fallen on the returning face plate of rotation, and returning face plate drives metal
Workpiece is rotated up, and the blocking of buffer structure is encountered after returning face plate has rotated 90 degree, due to the power of high-temperature oil smoke at this time
Weaken, returning face plate cannot overcome the blocking of buffer structure and continue to move.When the pressure in oil quenching bath be again increased to it is default
When value, pressure valve is again turned on, and high-temperature oil smoke pushes rollover stand movement, and the metal works on rollover stand are transferred to oil quenching bath,
The metal works fed in oblique section are transferred on rollover stand, are so recycled.
The beneficial effect of this base case is:
1, after metal works are transferred to oil quenching bath, the high-temperature oil smoke generated in oil quenching bath can drive rollover stand to carry out
Overturning, falls the metal works on rollover stand, is automatically transferred in oil quenching bath by discharging structure, can also be made at the same time
Metal works in preheating furnace are automatically transferred on rollover stand, are realized and are automatically replenished, shift metal works automatically, lower significantly
The labor intensity of worker.
2, after pressure valve is opened, high-temperature oil smoke is entered in vacuum furnace by pressure valve, at the same time in preheating furnace
Metal works are transferred on rollover stand, need to carry out vacuumize process to vacuum furnace at this time, vacuum pump will be in vacuum furnace
High-temperature oil smoke be evacuated in preheating furnace, high-temperature oil smoke preheats metal works, make full use of the resource in system, effectively save
Save the energy.
3, the upper wall of preheating furnace is equipped with smoke evacuation valve, and when the pressure in preheating furnace is bigger than outside pressure, smoke evacuation valve is
It can open, excessive gas is discharged, under normal conditions, smoke evacuation valve is in closed state, and the heat in preheating furnace is avoided to dissipate
It is dealt into the external world.
Further, the exhaust gases passes being connected to vacuum pump discharge are equipped in preheating furnace, exhaust gases passes and the oblique section of charging connect
It is logical.The high-temperature oil smoke of vacuum pump extraction enters the oblique section of charging by exhaust gases passes, and the design of exhaust gases passes is so that high-temperature oil smoke has
Relatively-stationary moving conduit, enables high-temperature oil smoke to be fully warmed-up metal works.
Further, fixed column is equipped in vacuum furnace, drum rotation is connected in fixed column, and cunning is provided in fixed column
Slot；The wedge-shaped telescopic block that the restricted rotating cylinder that is slidably connected in the sliding slot moves to the left, connects between wedge-shaped telescopic block and sliding slot
It is connected to pressure spring；The inner wall of rotating cylinder is equipped with 4 card slots that can cooperate with telescopic block, and card slot is uniformly distributed along the inner wall of rotating cylinder.High temperature
When oil smoke drives drum rotation by returning face plate, due to the setting of wedge-shaped telescopic block, so that rotating cylinder can only be toward fixed direction-right side
Side rotation, so that rollover stand is more stable；And after rotation has overturn 90 degree, card slot engages with wedge-shaped telescopic block, needs to apply
The power of increasing can just be such that returning face plate rotates, and high-temperature oil smoke is short of power to drive returning face plate to rotate at this time, it is ensured that returning face plate
Only 90 degree of rotation every time.
Further, the block that limitation voussoir moves upwards is equipped in vacuum furnace.When use vacuum pump is to heating in vacuum
When stove evacuation, since, there are pressure difference, voussoir has the tendency that moving upwards inside and outside vacuum furnace, the setting of block is limited
The movement of voussoir avoids voussoir from moving upwards and makes spring excessive tensile, leads to spring breaking down.
Further, returning face plate is fixed with far from one end of rotating cylinder for accepting holding from the metal works fed under oblique paragraph
Fishplate bar.High-temperature oil smoke push returning face plate rotation during, unilateral gate opens up, originally positioned at lower left returning face plate by
It is gradually flipped up, feeds the metal works in oblique section in this process and fall on the returning face plate, the setting of bearing plate can be kept away
Exempt from metal works during returning face plate rotates and skids off returning face plate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of quenching unit embodiment of the present invention；
Fig. 2 is the structural schematic diagram of fixing axle and rotating cylinder in Fig. 1.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail:
Appended drawing reference in Figure of description 1 to 2 includes: that preheating furnace 10, smoke evacuation valve 11, the oblique section 12 of charging, flue gas are logical
Road 13, metal works 20, vacuum furnace 30, unilateral gate 31, baffle 311, pressure valve 32, fixed column 40, pressure spring 41, wedge shape are stretched
Contracting block 42, bearing plate 51, oil quenching bath 60, voussoir 70, spring 71, support plate 72, brake plate 80, tension spring 81, turns returning face plate 50
Cylinder 90, card slot 91.
The application method of quenching unit, as shown in Figure 1 and Figure 2, quenching unit successively includes preheating furnace 10, true from top to bottom
Empty heating furnace 30 and closed oil quenching bath 60, the upper wall of preheating furnace 10 are equipped with the smoke evacuation valve 11 that can only be opened up, smoke evacuation
Elastic component is connected between valve 11 and preheating furnace 10.Under normal circumstances, smoke evacuation valve 11 is closed, the heat in preheating furnace 10
It cannot be lost to the external world, when the pressure in preheating furnace 10 increases to a certain extent, under the influence of air pressure, discharged fume 11 grams of valve
It takes the active force of elastic component and opens, gas extra in preheating furnace 10 is discharged.It is equipped in preheating furnace 10 and feeds oblique section 12 and cigarette
Gas channel 13, exhaust gases passes 13 are connected to the lower end for feeding oblique section 12, and metal works 20 are placed in the oblique section 12 of charging.Vacuum adds
The upper wall of hot stove 30 is hinged with the unilateral gate 31 that can only be opened up, after unilateral gate 31 is opened, preheating furnace 10 and vacuum furnace
30 connections.The left side that oblique section 12 is located at unilateral gate 31 is fed, unilateral gate 31 is fixed with baffle 311 far from one end of hinge joint, should
Baffle 311 can be contacted with the metal works 20 fed in oblique 12 lower end of section, under the action of baffle 311, be fed golden in oblique section 12
Metal work-pieces 20 cannot slide.Rollover stand is equipped in vacuum furnace 30, rollover stand is equipped with electric heating wire, and motor heated filament is for adding
Thermometal workpiece 20.Rollover stand include fixing axle, the rotating cylinder being rotatably connected in fixing axle 90 and be fixed on rotating cylinder 90 four
Block returning face plate 50, fixing axle are fixed in vacuum furnace 30, and the distance of fixing axle to unilateral gate 31 is less than the length of returning face plate 50
Degree.Four pieces of returning face plates 50 are uniformly distributed along the circumferential direction of rotating cylinder 90, and returning face plate 50 is fixed with bearing plate 51 far from one end of rotating cylinder 90,
When the setting of bearing plate 51 is so that returning face plate 50 is overturn, returning face plate 50 can accept the metal works fallen from the oblique section 12 of charging
20, avoid metal works 20 from sliding.Under normal circumstances, four pieces of returning face plates 50 can be entirely located in vacuum furnace 30, when turning over
When rotating plate 50 rotates, the returning face plate 50 on rollover stand can only be contacted with unilateral gate 31, with the rotation of returning face plate 50, returning face plate 50
Unilateral gate 31 can be opened, the baffle 311 on unilateral gate 31 is far from the metal works 20 for feeding oblique section 12 at this time, due to without
The blocking of baffle 311 feeds 20 slide downward of metal works in oblique section 12, can be added by unilateral gate 31 subsequently into vacuum
In hot stove 30.Sliding slot is provided in fixed column 40, the wedge-shaped telescopic block that the restricted rotating cylinder 90 that is slidably connected in sliding slot moves to the left
42, pressure spring 41 is connected between wedge-shaped telescopic block 42 and sliding slot；The inner wall of rotating cylinder 90, which is equipped with 4, to be cooperated with wedge-shaped telescopic block 42
Card slot 91, card slot 91 is uniformly distributed along the inner wall of rotating cylinder 90.When high-temperature oil smoke drives rotating cylinder 90 to rotate by returning face plate 50, by
In the setting of wedge-shaped telescopic block 42 rotation so that rotating cylinder 90 can only turn right, after returning face plate 50 has overturn 90 degree, card slot 91 with
Wedge-shaped telescopic block 42 engages, and needing to apply biggish power at this time just can be such that returning face plate 50 continues to rotate.
Buffer structure is equipped in vacuum furnace 30, buffer structure includes the system for being hinged on 30 right side inner wall of vacuum furnace
Movable plate 80 is connected with tension spring 81 between 30 inner wall of brake plate 80 and vacuum furnace.When one of bearing plate 51 end with
When the upper surface of brake plate 80 just contacts, wherein the space that two pieces of bearing plates 51 surround faces unilateral gate 31.Brake plate 80
Returning face plate 50 can be stablized to a certain extent, the continuation of returning face plate 50 is avoided to rotate to the right.A left side for 30 lower wall of vacuum furnace
Side is equipped with the pressure valve 32 being connected to oil quenching bath 60, and the returning face plate 50 on the left of pressure valve 32 and rollover stand is opposite, works as quenching oil
When pressure in pond 60 increases to the preset value of pressure valve 32, pressure valve 32 can be automatically opened.30 lower wall of vacuum furnace
Right side is equipped with the discharging structure that metal works 20 are sent into oil quenching bath 60, and discharging structure includes spring 71, is fixed on vacuum drying oven
The support plate 72 of lower wall and the voussoir 70 adjacent with 30 right side wall of vacuum furnace, voussoir 70 are slidably connected at vacuum furnace 30
Lower wall on；The upper surface of voussoir 70 is inclined-plane and inclined-plane is tilted down towards right side, and one end of spring 71 is connected on voussoir 70,
The other end is connected in support plate 72.Block is fixed on the right side of 30 inner wall of vacuum furnace, it is upward that block can limit voussoir 70
Movement.Vacuum furnace 30 is externally provided with vacuum pump, and the import of vacuum pump is connected to vacuum furnace 30, the outlet of vacuum pump with
Exhaust gases passes 13 are connected to.
The application method of quenching unit the following steps are included:
(1) before using the present apparatus, each components of first check device, it is ensured that device can operate normally；
(2) it will be preheated in the oblique section of charging that metal works are placed on preheating furnace；
(3) metal works that preheating is completed are placed on rollover stand, metal works is made to be located at two pieces above rollover stand
Between returning face plate；Electric heating wire and vacuum pump are opened, vacuum pump extracts the gas in vacuum furnace out；
(4) after metal works are heated to fixed temperature, the metal works heated are artificially transferred to oil quenching bath, and
Preheated metal works are added on rollover stand simultaneously；After metal works enter oil quenching bath, a large amount of high temperature oil is generated
Cigarette, after a period of time, the pressure of oil quenching bath increases, and pressure valve automatically opens, and high-temperature oil smoke enters in vacuum furnace and pushes away
Dynamic returning face plate moves to the right, and the metal works on returning face plate are fallen, and is transferred in oil quenching bath；At the same time, in preheating furnace
Metal works add on returning face plate；
(5) start vacuum pump after being automatically replenished new metal works in vacuum furnace, by the gas in vacuum furnace
Extraction；
(6) after a period of time, pressure valve is again turned on, and high-temperature oil smoke pushes rollover stand movement, the metal work on rollover stand
Part is transferred to oil quenching bath, and the metal works in preheating furnace are transferred on rollover stand, so recycles.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (5)
1. the application method of quenching unit, it is characterised in that: quenching unit successively includes preheating furnace, vacuum furnace from top to bottom
And oil quenching bath, preheating furnace are equipped with smoke evacuation valve, are equipped in preheating furnace and feed oblique section, the upper wall of vacuum furnace is equipped with unidirectional
Door, feeds the side that oblique section is located at unilateral gate, is fixed with the baffle for preventing from feeding that metal works slide in oblique section on unilateral gate；Very
Rollover stand is equipped in empty heating furnace, rollover stand is equipped with electric heating wire, and rollover stand includes that rotating cylinder and four pieces can jack up unilateral gate
Returning face plate, returning face plate is uniformly fixed in the circumferential direction of rotating cylinder；Drum rotation is connected in vacuum furnace, rotating cylinder to unilateral gate
Distance be less than returning face plate length；The left side of vacuum furnace lower wall is equipped with the pressure valve being connected to oil quenching bath, and vacuum adds
The right side of hot stove lower wall is equipped with discharging structure, and discharging structure includes spring, the support plate for being fixed on vacuum drying oven lower wall and and vacuum
The adjacent voussoir of heating furnace right side wall, voussoir are slidably connected at the lower wall of vacuum furnace；One end of spring is connected on voussoir,
The other end connects on the supporting plate；The buffer structure for limiting rollover stand rotation, buffer structure packet are equipped in vacuum furnace
The brake plate for being hinged on inner wall on the right side of vacuum furnace is included, is connected with tension spring between brake plate and vacuum furnace inner wall；Vacuum
Heating furnace is externally provided with vacuum pump, and the import of vacuum pump is connected to vacuum furnace, and the outlet of vacuum pump is connected to preheating furnace；
The application method of quenching unit the following steps are included:
(1) before using the present apparatus, each components of first check device, it is ensured that device can operate normally；
(2) it will be preheated in the oblique section of charging that metal works are placed on preheating furnace；
(3) metal works that preheating is completed are placed on rollover stand, two pieces of overturnings for being located at metal works above rollover stand
Between plate；Electric heating wire and vacuum pump are opened, vacuum pump extracts the gas in vacuum furnace out；
(4) after metal works are heated to fixed temperature, the metal works heated are artificially transferred to oil quenching bath, and simultaneously
Preheated metal works are added on rollover stand；After metal works enter oil quenching bath, a large amount of high-temperature oil smoke is generated, one
After the section time, the pressure of oil quenching bath increases, and pressure valve automatically opens, and high-temperature oil smoke enters in vacuum furnace and pushes overturning
Plate moves to the right, and the metal works on returning face plate are fallen, and is transferred in oil quenching bath；At the same time, the metal in preheating furnace
Workpiece adds on returning face plate；
(5) start vacuum pump after being automatically replenished new metal works in vacuum furnace, the gas in vacuum furnace is extracted out；
(6) after a period of time, pressure valve is again turned on, and high-temperature oil smoke pushes rollover stand movement, and the metal works on rollover stand turn
Oil quenching bath is moved on to, the metal works in preheating furnace are transferred on rollover stand, are so recycled.
2. the application method of quenching unit according to claim 1, it is characterised in that: be equipped in preheating furnace and arranged with vacuum pump
The exhaust gases passes of outlet, exhaust gases passes are connected to oblique section is fed.
3. the application method of quenching unit according to claim 2, it is characterised in that: be equipped with and fix in vacuum furnace
Column, drum rotation are connected in fixed column, and sliding slot is provided in fixed column；Restricted rotating cylinder is slidably connected in the sliding slot to the left
The wedge-shaped telescopic block of movement, is connected with pressure spring between wedge-shaped telescopic block and sliding slot；The inner wall of rotating cylinder, which is equipped with 4, to match with telescopic block
The card slot of conjunction, card slot are uniformly distributed along the inner wall of rotating cylinder.
4. the application method of quenching unit according to claim 3, it is characterised in that: be equipped with limitation wedge in vacuum furnace
The block that block moves upwards.
5. the application method of quenching unit according to claim 4, it is characterised in that: the one end of returning face plate far from rotating cylinder is solid
Surely have for accepting from the bearing plate for feeding the metal works under oblique paragraph.
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| CN108411092A (en) * | 2018-05-31 | 2018-08-17 | 重庆伟福机械有限公司 | Crankshaft Machining quenching unit |
| CN109593931A (en) * | 2018-12-05 | 2019-04-09 | 马鞍山市万鑫铸造有限公司 | A kind of quenching unit |
| CN113046537B (en) * | 2021-03-17 | 2021-11-12 | 衢州捷鑫化工设备有限公司 | Production system and production process of metal screw |
| CN113061694A (en) * | 2021-03-22 | 2021-07-02 | 金震 | Quenching system and quenching process of metal screw |
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| JP2014031543A (en) * | 2012-08-03 | 2014-02-20 | Koyo Thermo System Kk | Hardening apparatus |
| CN104164552A (en) * | 2014-08-08 | 2014-11-26 | 苏州中门子科技有限公司 | Quenching system used in steel ball production |
| CN107177727A (en) * | 2017-04-27 | 2017-09-19 | 重庆市永川区益锐机械有限责任公司 | Blade pump rotor quenching unit |
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| CN108004379A (en) | 2018-05-08 |
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Effective date of registration: 20220804 Address after: Room 7088-230, 7th floor, 1558 Jiangnan Road, high tech Zone, Ningbo, Zhejiang 315000 Patentee after: NINGBO LONGRUI MACHINERY MANUFACTURE CO.,LTD. Address before: 315000 room 9-5-070, No.8, 20, 32, Yangfan square, high tech Zone, Ningbo City, Zhejiang Province Patentee before: NINGBO DESHEN MACHINERY EQUIPMENT Co.,Ltd. |