CN107385169A - Quenching heat treatment process system is used in a kind of aluminium alloy processing - Google Patents
Quenching heat treatment process system is used in a kind of aluminium alloy processing Download PDFInfo
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- CN107385169A CN107385169A CN201710869550.0A CN201710869550A CN107385169A CN 107385169 A CN107385169 A CN 107385169A CN 201710869550 A CN201710869550 A CN 201710869550A CN 107385169 A CN107385169 A CN 107385169A
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- fixed
- casing
- aluminium alloy
- motor
- heat treatment
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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
- C21D1/64—Quenching devices for bath quenching with circulating liquids
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention provides a kind of aluminium alloy processing quenching heat treatment process system；Including casing, fixed mount and fixed case；The casing left bottom offers delivery port；No.1 cooler is provided with below the delivery port；No.1 motor is provided with the left of the fixed mount；The No.1 motor is provided with two, and one is fixed in No.1 motor fixing seat, and another is fixed in No. two motor fixing seats；No. two motor fixing seats are fixed on casing right end face；No.1 motor is fixed with belt pulley by rotating shaft；Belt is fixed with the belt pulley；The belt is arranged between belt pulley and circulating fan；No. two motors are provided with the left of the circulating fan；No. two motors are fixed on the axis line position of casing upper surface by bearing；Air exhauster is provided with the left of No. two motors；The present invention it is simple in construction, it is easy to use, circulating fan is set on casing, can quenching when respiratory box body in steam, aluminium alloy can be dried after quenching terminates again.
Description
Technical field
The present invention relates to a kind of aluminium alloy manufacture field, quenching heat treatment technique system is used in specifically a kind of aluminium alloy processing
System.
Background technology
A kind of Technology for Heating Processing of quenching, metal and glass.Quenching is by METAL HEATING PROCESS to critical-temperature temperatures above, is protected
Warm a period of time, all or part of austenitizing is allowed to, carry out geneva is then cooled down with the cooling rate more than critical cooling rate soon
The Technology for Heating Processing of body (or bainite) transformation.Generally also consolidating materials such as aluminium alloy, copper alloy, titanium alloy, safety glass
Molten processing or the Technology for Heating Processing referred to as quenching with quick cooling procedure.
Aluminium alloy density is low, but intensity is higher, and near or above high-quality steel, plasticity is good, has good processability, and
With excellent electric conductivity, thermal conductivity and corrosion resistance, Aero-Space, building, automobile, machine-building, ship are widely used to
The every field such as oceangoing ship, usage amount are only second to steel.Cooling velocity of the aluminium alloy when being quenched must assure that supersaturated solid solution
It is fixed and does not decompose.Prevent hardening constituent from separating out, reduce the mechanical property after quenching timeliness.Cooling velocity when therefore quenching
The faster the better.
The content of the invention
It is an object of the invention to provide a kind of aluminium alloy processing quenching heat treatment process system, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the present invention provides following technical scheme：
Quenching heat treatment process system is used in a kind of aluminium alloy processing；Including casing, fixed mount and fixed case；The casing is left
Side bottom offers delivery port；No.1 cooler is provided with below the delivery port；The No.1 cooler is fixed on outlet pipe
On；Described outlet pipe one end is fixed on delivery port, and the other end connects with drinking-water pipe；The drinking-water pipe and water pump are connected to one
Rise；The water pump is fixed on casing right-hand member bottom；No.1 water inlet pipe and No. two water inlet pipes are provided with water pump；No. two water inlets
No. three coolers are fixed with pipe, and it is fixed on the top of fixed mount；Hydraulic cylinder is provided with below fixed mount；The hydraulic cylinder
It is fixed on bottom half axis；Hydraulic cylinder upper end is provided with hydraulic stem；The hydraulic stem lower end is nested to be arranged on hydraulic cylinder
On the axis of upper end, its top is fixed with fixed plate；The fixed plate is arranged above rotating disk；The rotating disk is fixed on rack
On horizontal axis；No.1 motor is provided with the left of fixed mount；The No.1 motor is fixed in No.1 motor fixing seat；It is described
No.1 motor fixing seat left end is fixed on casing left end inwall, and right-hand member is fixed on fixed mount left end；No.1 motor is provided with
Two, one is fixed in No.1 motor fixing seat, and another is fixed in No. two motor fixing seats；No. two motors are fixed
Seat is fixed on casing right end face；No.1 motor is fixed with belt pulley by rotating shaft；Belt is fixed with the belt pulley；Institute
Belt is stated to be arranged between belt pulley and circulating fan；The circulating fan is fixed on the right side of the axis of casing upper surface, and its
Lower end is provided with air port；The air port is opened in casing upper end；No. two motors are provided with the left of circulating fan；No. two motors
It is fixed on by bearing on the axis line position of casing upper surface；No. two motors are connected with elongated rotating shaft by shaft coupling；It is described solid
Determine to open up on chamber interior wall fluted；Stereotype plate is fixed with the groove；Fixed case lower end is provided with rotating disk；On the left of No. two motors
It is provided with air exhauster；The air exhauster is fixed on the left of the axis of casing upper surface；Exhaust column is provided with the right side of air exhauster；Casing
Left end is fixed with hermatic door by hinge.
As the further scheme of the present invention：No. two coolers are fixed with the No.1 water inlet pipe, and it is fixed on
Determine the bottom of frame.
As the further scheme of the present invention：Fountain head is both provided with the No.1 water inlet pipe and No. two water inlet pipes；Institute
Fountain head is stated to be fixed on fixed mount.
As the further scheme of the present invention：The rack is provided with two, is slidably connected at respectively on slide rail；The cunning
Rail is provided with two, is separately fixed at the front and back end of fixed mount.
As the further scheme of the present invention：The No.1 motor is connected with rotating shaft by shaft coupling；Set in the rotating shaft
It is equipped with gear；The wheel and rack engagement.
As the further scheme of the present invention：The elongated rotating shaft lower end is fixed with electromagnet；Under the electromagnet
End is connected case by magnetic.
As further scheme of the invention：Described exhaust column one end is fixed on air exhauster right-hand member outer wall, the other end
It is fixed on the upper end of air port；Air exhauster left end is connected with air outlet.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is simple in construction, easy to use, and No. two motors are set on casing, can rotate fixed case, in order to which aluminium closes
Jin Yushui is fully contacted, and accelerates quenching velocity；Circulating fan is set on casing, can quenching when respiratory box body in steam,
Aluminium alloy can be dried after quenching terminates again；Fixed mount all sets fountain head up and down, in order to which water and aluminium alloy fully contact；
Bottom half sets delivery port and outlet pipe, water can be recycled in quenching, in order to saving water resource；Set on water pipe
Cooler, cooled down in order to the temperature of water, in order to accelerate quenching velocity；Hermatic door is set on casing, in order to prevent quenching
When produce pernicious gas overflow, operator's body is harmful to.
Brief description of the drawings
Fig. 1 is a kind of structural representation of aluminium alloy processing quenching heat treatment process system.
Fig. 2 is a kind of structural representation of aluminium alloy processing quenching heat treatment process system middle belt pulley.
Fig. 3 is the fixed structure schematic diagram of a kind of aluminium alloy processing quenching heat treatment process system middle rack and gear.
Fig. 4 is a kind of structural representation of aluminium alloy processing quenching heat treatment process system middle gear.
Fig. 5 is schematic diagram in the structure that a kind of aluminium alloy processing is fixed with quenching heat treatment process system turntable.
Fig. 6 is a kind of structural representation of fixed case in aluminium alloy processing quenching heat treatment process system.
Fig. 7 is a kind of structural representation of hermatic door in aluminium alloy processing quenching heat treatment process system.
In figure：1- casings, 2- fixed mounts, 3- fixed cases, 4- outlet pipes, 5- No.1 coolers, 6- delivery ports, 7- No.1s electricity
Machine fixed seat, 8- No.1 motors, 9- racks, 10- slide rails, 11- hydraulic cylinders, 12- fixed plates, 13- hydraulic stems, No. bis- coolings of 14-
Device, 15- drinking-water pipes, 16- water pumps, 17- No.1 water inlet pipes, 18- rotating disks, 19- stereotype plates, No. tri- coolers of 20-, 21- bis- enter
Water pipe, 22- electromagnet, No. bis- motor fixing seats of 23-, 24- belt pulleys, 25- belts, 26- circulating fans, 27- elongated rotating shafts,
No. bis- motors of 28-, 29- fountain heads, 30- air ports, 31- exhaust columns, 32- air exhausters, 33- air outlets, 34- rotating shafts, 35- gears,
36- grooves, 37- hermatic doors.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Fig. 1-7 are referred to, quenching heat treatment process system is used in a kind of aluminium alloy processing；Including casing 1, fixed mount 2 and consolidate
Determine case 3；The left bottom of casing 1 offers delivery port 6；The lower section of delivery port 6 is provided with No.1 cooler 5；Described one
Number cooler 5 is fixed on outlet pipe 4, in order to by the water cooling in outlet pipe 4；Described one end of outlet pipe 4 is fixed on water outlet
On mouth 6, the other end and drinking-water pipe 15 connect；The drinking-water pipe 15 and water pump 16 link together；The water pump 16 is fixed on case
The right-hand member bottom of body 1；No.1 water inlet pipe 17 and No. two water inlet pipes 21 are provided with water pump 16；It is fixed with the No.1 water inlet pipe 17
No. two coolers 14, and it is fixed on the bottom of fixed mount 2；No. three coolers 20 are fixed with No. two water inlet pipes 21, and
It is fixed on the top of fixed mount 2；Fountain head 29 is both provided with No.1 water inlet pipe 17 and No. two water inlet pipes 21, in order to quench
When water；The fountain head 29 is fixed on fixed mount 2；The lower section of fixed mount 2 is provided with hydraulic cylinder 11；The hydraulic cylinder 11 is fixed
On the bottom axis of casing 1；The upper end of hydraulic cylinder 11 is provided with hydraulic stem 13；The lower end of hydraulic stem 13 is nested to be arranged on hydraulic pressure
On the upper end axis of cylinder 11, its top is fixed with fixed plate 12；The fixed plate 12 is arranged above rotating disk 18；The rotating disk
18 are fixed on 9 horizontal axis of rack；The rack 9 is provided with two, is slidably connected at respectively on slide rail 10；The slide rail
10 are provided with two, are separately fixed at the front and back end of fixed mount 2；The left side of fixed mount 2 is provided with No.1 motor 8；The No.1 electricity
Machine 8 is fixed in No.1 motor fixing seat 7；The left end of No.1 motor fixing seat 7 is fixed on the left end inwall of casing 1, right-hand member
It is fixed on the left end of fixed mount 2；No.1 motor 8 is connected with rotating shaft 34 by shaft coupling；Gear 35 is provided with the rotating shaft 34；
The gear 35 engages with rack 9, in order to which band carry-over bar 9 moves on slide rail 10；No.1 motor 8 is provided with two, one
It is fixed in No.1 motor fixing seat 7, another is fixed in No. two motor fixing seats 23；No. two motor fixing seats 23 are solid
It is scheduled on the right end face of casing 1；No.1 motor 8 is fixed with belt pulley 24 by rotating shaft 34；Skin is fixed with the belt pulley 24
Band 25；The belt 25 is arranged between belt pulley 24 and circulating fan 26, in order to drive circulating fan 26 to rotate；It is described to follow
Ring blower fan 26 is fixed on the right side of the upper surface axis of casing 1, and its lower end is provided with air port 30；The air port 30 is opened in casing
1 upper end, the drying of Al-alloy products after excluding and quench in order to the steam inside casing 1；The left side of circulating fan 26 is provided with
No. two motors 28；No. two motors 28 are fixed on the upper surface axis line position of casing 1 by bearing；No. two motors 28 pass through
Shaft coupling is connected with elongated rotating shaft 27；The lower end of elongated rotating shaft 27 is fixed with electromagnet 22；The lower end of electromagnet 22 passes through
Magnetic is connected case 3；Fluted 36 are opened up on the inwall of fixed case 3；Stereotype plate 19 is fixed with the groove 36, so as to
Deformed in preventing aluminium alloy；The lower end of fixed case 3 is provided with rotating disk 18, in order to which fixed case 3 rotates；No. two left sides of motor 28 are set
There is air exhauster 32；The air exhauster 32 is fixed on the left of the upper surface axis of casing 1；The right side of air exhauster 32 is provided with exhaust column
31；Described one end of exhaust column 31 is fixed on the right-hand member outer wall of air exhauster 32, and the other end is fixed on the upper end of air port 30；Air exhauster 32
Left end is connected with air outlet 33, in order to the discharge of the steam inside of casing 1；The left end of casing 1 is fixed with hermatic door 37 by hinge,
Casing 1 is sealed during in order to quench, prevents steam from overflowing.
The present invention operation principle be：
In use, first opening hermatic door 37, then being inverted by No.1 motor 8 with moving gear 35 on rack 9 will be solid
Determine case 3 to be moved to inside casing 1 on the outside of the left end of casing 1, then select stereotype plate 19 solid by the groove 36 on fixed case 3 again
It is scheduled in fixed case 3, and then the aluminium alloy part for needing to be quenched is fixed on stereotype plate 19；Then No.1 is passed through
Motor 8 rotates forward on rack 9 with moving gear 35 and is moved to fixed case 3 inside casing 1 from the left end of casing 1, until fixation
When case 3 is moved to 22 underface of electromagnet, stops No.1 motor 8 and rotate, then start electromagnet 22, afterwards electromagnet 22 and solid
Determine case 3 to be fixed together；Then hydraulic cylinder 11 is started, hydraulic cylinder 11 drives hydraulic stem 13 to extend, and the elongation of hydraulic stem 13 drives solid
Fixed board 12 moves up, and after fixed plate 12 can contact with rotating disk 18, stops starting hydraulic cylinder 11；Hermatic door 37 is closed afterwards
On, start 16, No. two coolers 14 of water pump and No. three coolers 20, water pump 16 begin through drinking-water pipe 15 and supplied water into casing 1,
Fountain head 29 on No.1 water inlet pipe 17 and No. two water inlet pipes 21 starts to spray water, and the aluminium alloy contact of water and high temperature distributes steam,
At this moment circulating fan 26 and air exhauster 31 can be started simultaneously, the steam in casing 1 is extracted out；No. two motors can be started simultaneously
28 drive fixed cases 3 rotate on rotating disk 18 makes quenching part fully be contacted with water, and delivery port 6 has water to be flowed into water from outlet pipe 4
It after pump 16, can stop pumping, only be quenched by the water circulation inside casing 1；, can be with after the completion of aluminum alloy quenching
Start circulating fan 26 to invert, the aluminium alloy after quenching is dried.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, can also be on the premise of this patent objective not be departed from one skilled in the relevant art's possessed knowledge
Make a variety of changes.
Claims (7)
1. quenching heat treatment process system is used in a kind of aluminium alloy processing；Including casing (1), fixed mount (2) and fixed case (3)；Its
It is characterised by, casing (1) left bottom offers delivery port (6)；No.1 cooler is provided with below the delivery port (6)
(5)；The No.1 cooler (5) is fixed on outlet pipe (4)；Described outlet pipe (4) one end is fixed on delivery port (6), separately
One end and drinking-water pipe (15) connection；The drinking-water pipe (15) and water pump (16) link together；The water pump (16) is fixed on case
Body (1) right-hand member bottom；No.1 water inlet pipe (17) and No. two water inlet pipes (21) are provided with water pump (16)；No. two water inlet pipes
(21) No. three coolers (20) are fixed with, and it is fixed on the top of fixed mount (2)；Hydraulic pressure is provided with below fixed mount (2)
Cylinder (11)；The hydraulic cylinder (11) is fixed on casing (1) bottom axis；Hydraulic cylinder (11) upper end is provided with hydraulic stem
(13)；Hydraulic stem (13) lower end is nested to be arranged on hydraulic cylinder (11) upper end axis, and its top is fixed with fixed plate
(12)；The fixed plate (12) is arranged above rotating disk (18)；The rotating disk (18) is fixed on rack (9) horizontal axis
On；No.1 motor (8) is provided with the left of fixed mount (2)；The No.1 motor (8) is fixed in No.1 motor fixing seat (7)；Institute
State No.1 motor fixing seat (7) left end to be fixed on casing (1) left end inwall, right-hand member is fixed on fixed mount (2) left end；No.1
Motor (8) is provided with two, and one is fixed in No.1 motor fixing seat (7), and another is fixed on No. two motor fixing seats
(23) on；No. two motor fixing seats (23) are fixed on casing (1) right end face；No.1 motor (8) passes through rotating shaft (34)
It is fixed with belt pulley (24)；Belt (25) is fixed with the belt pulley (24)；The belt (25) is arranged on belt pulley (24)
Between circulating fan (26)；The circulating fan (26) is fixed on the right side of casing (1) upper surface axis, and its lower end is set
There is air port (30)；The air port (30) is opened in casing (1) upper end；No. two motors (28) are provided with the left of circulating fan (26)；
No. two motors (28) are fixed on the axis line position of casing (1) upper surface by bearing；No. two motors (28) pass through shaft coupling
Device is connected with elongated rotating shaft (27)；Opened up fluted (36) on fixed case (3) inwall；It is fixed to be fixed with the groove (36)
Template (19)；Fixed case (3) lower end is provided with rotating disk (18)；Air exhauster (32) is provided with the left of No. two motors (28)；It is described to take out
Blower fan (32) is fixed on the left of casing (1) upper surface axis；Exhaust column (31) is provided with the right side of air exhauster (32)；Casing (1)
Left end is fixed with hermatic door (37) by hinge.
2. quenching heat treatment process system is used in a kind of aluminium alloy processing according to claim 1, it is characterised in that described one
No. two coolers (14) are fixed with number water inlet pipe (17), and it is fixed on the bottom of fixed mount (2).
3. quenching heat treatment process system is used in a kind of aluminium alloy processing according to claim 1, it is characterised in that described one
Fountain head (29) is both provided with number water inlet pipe (17) and No. two water inlet pipes (21)；The fountain head (29) is fixed on fixed mount
(2) on.
4. quenching heat treatment process system is used in a kind of aluminium alloy processing according to claim 1, it is characterised in that the tooth
Bar (9) is provided with two, is slidably connected at respectively on slide rail (10)；The slide rail (10) is provided with two, is separately fixed at solid
Determine the front and back end of frame (2).
5. quenching heat treatment process system is used in a kind of aluminium alloy processing according to claim 1, it is characterised in that described one
Number motor (8) is connected with rotating shaft (34) by shaft coupling；Gear (35) is provided with the rotating shaft (34)；The gear (35) with
Rack (9) engages.
6. quenching heat treatment process system is used in a kind of aluminium alloy processing according to claim 1, it is characterised in that the institute
State elongated rotating shaft (27) lower end and be fixed with electromagnet (22)；Electromagnet (22) lower end is connected case (3) by magnetic.
7. quenching heat treatment process system is used in a kind of aluminium alloy processing according to claim 1, it is characterised in that described to take out
Airduct (31) one end is fixed on air exhauster (32) right-hand member outer wall, and the other end is fixed on air port (30) upper end；Air exhauster (32)
Left end is connected with air outlet (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710869550.0A CN107385169A (en) | 2017-09-23 | 2017-09-23 | Quenching heat treatment process system is used in a kind of aluminium alloy processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710869550.0A CN107385169A (en) | 2017-09-23 | 2017-09-23 | Quenching heat treatment process system is used in a kind of aluminium alloy processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107385169A true CN107385169A (en) | 2017-11-24 |
Family
ID=60349978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710869550.0A Pending CN107385169A (en) | 2017-09-23 | 2017-09-23 | Quenching heat treatment process system is used in a kind of aluminium alloy processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107385169A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112111631A (en) * | 2020-08-03 | 2020-12-22 | 陈�峰 | Gear quenching equipment |
| CN112359185A (en) * | 2020-12-04 | 2021-02-12 | 江苏华夏炉业有限公司 | Double-layer quenching device for metal workpiece |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3929829A1 (en) * | 1988-03-18 | 1991-03-07 | Mannesmann Ag | Heat treatment cooling for cylindrical steel parts and containers - has part in continuous variable speed rotation sprayed with water at varying rate to maintain precise temp. gradient |
| WO2000001857A1 (en) * | 1998-07-07 | 2000-01-13 | Didier Tecnica, S.A. | Unit for the rapid cooling of sheet or flat by water-spraying |
| CN203530366U (en) * | 2013-08-02 | 2014-04-09 | 山东润源实业有限公司 | Rotary spray cooling system |
| CN204455202U (en) * | 2015-03-11 | 2015-07-08 | 昆明多宝电缆有限公司 | A kind of cable annealing device |
| CN204779697U (en) * | 2015-05-26 | 2015-11-18 | 常德金仙耐磨材料有限公司 | Rotation type atomizing guenching unit |
| CN205954060U (en) * | 2016-07-22 | 2017-02-15 | 天津市家新科技发展有限公司 | Aluminum alloy extrusion profile's guenching unit |
| CN206069937U (en) * | 2016-08-29 | 2017-04-05 | 四川齐飞铝业有限公司 | A kind of high-efficient aluminium alloy section bar press quenching device |
-
2017
- 2017-09-23 CN CN201710869550.0A patent/CN107385169A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3929829A1 (en) * | 1988-03-18 | 1991-03-07 | Mannesmann Ag | Heat treatment cooling for cylindrical steel parts and containers - has part in continuous variable speed rotation sprayed with water at varying rate to maintain precise temp. gradient |
| WO2000001857A1 (en) * | 1998-07-07 | 2000-01-13 | Didier Tecnica, S.A. | Unit for the rapid cooling of sheet or flat by water-spraying |
| CN203530366U (en) * | 2013-08-02 | 2014-04-09 | 山东润源实业有限公司 | Rotary spray cooling system |
| CN204455202U (en) * | 2015-03-11 | 2015-07-08 | 昆明多宝电缆有限公司 | A kind of cable annealing device |
| CN204779697U (en) * | 2015-05-26 | 2015-11-18 | 常德金仙耐磨材料有限公司 | Rotation type atomizing guenching unit |
| CN205954060U (en) * | 2016-07-22 | 2017-02-15 | 天津市家新科技发展有限公司 | Aluminum alloy extrusion profile's guenching unit |
| CN206069937U (en) * | 2016-08-29 | 2017-04-05 | 四川齐飞铝业有限公司 | A kind of high-efficient aluminium alloy section bar press quenching device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112111631A (en) * | 2020-08-03 | 2020-12-22 | 陈�峰 | Gear quenching equipment |
| CN112359185A (en) * | 2020-12-04 | 2021-02-12 | 江苏华夏炉业有限公司 | Double-layer quenching device for metal workpiece |
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Application publication date: 20171124 |