CN105483351B - A kind of ground pit type lifting heat-treatment furnace and heat treatment method - Google Patents
A kind of ground pit type lifting heat-treatment furnace and heat treatment method Download PDFInfo
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- CN105483351B CN105483351B CN201610008849.2A CN201610008849A CN105483351B CN 105483351 B CN105483351 B CN 105483351B CN 201610008849 A CN201610008849 A CN 201610008849A CN 105483351 B CN105483351 B CN 105483351B
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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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
- C21D1/26—Methods of annealing
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- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses a kind of ground pit type to lift heat-treatment furnace, including hydraulic cylinder, cover body, pit foundation, supporting plate, heat-insulation layer, connecting shaft and supporting plate, the bottom surface and side of the pit foundation are provided with fire brick layer, the fire brick layer surface is provided with heating wire, the pit foundation is located at the lower section of cover body, supporting plate is provided with inside the cover body, by bearings between the supporting plate and cover body, the excircle of the supporting plate is connected with drive device, the bottom of supporting plate is provided with heat-insulation layer, one end of the connecting shaft is connected through heat-insulation layer with the center of supporting plate bottom surface, the center of the other end and supporting plate connects, the cover body is connected with being arranged at the hydraulic cylinder of below ground.Designed using lift, pallet can be risen to the height concordant with ground, the handling of convenient heat treatment thing, eliminate the cumbersome of crane lifting, design is made using rotation simultaneously, heat treatment thing is in rotary state in heat treatment process, avoid heat treatment temperature uneven and influence thermal effectiveness.
Description
Technical field
The present invention relates to a kind of ground pit type lifting heat-treatment furnace and heat treatment method.
Background technology
In current industrial product application, it is GB/T 17791-2007 that copper pipe class product used, which performs standard, foundation
The difference of physical property, three kinds of states of copper pipe point：Hard state Y, half-hard state Y2, soft state M, for different types of product, it is necessary to make
With the copper pipe of different conditions.Half-hard state Y2 copper pipes straight tube production technology is more complicated at present, low production efficiency, and production cost is high.
, it is necessary to first that external diameter is identical when existing process produces Y2 state copper pipe straight tubes, the small 0.05-0.1mm of wall thickness copper pipe is annealed,
Move back into M state copper pipes, then head processed carries out empty drawing again, sky carries out aligning sawing after drawing and clears up surfaces externally and internally, repair head after wrapped
Dress.This mode of production production efficiency is poor, and production process step is more, it is difficult to ensure that the hardness of final products, the Y2 of production
State copper pipe hardness is uneven.
Simultaneously actually in industrialized production, annealing furnace is bulky, and temperature control is uneven, and by batch,
The multi-party face such as voltage pulsation, electrical heating component performance change, thermometric component locations and performance change, stove inner blower situation
Ring, same annealing process difference stove copper pipe performance difference is larger, causes product unqualified, and load and unload copper pipe and inconvenience.
The content of the invention
The present invention is in order to solve the above problems, it is proposed that a kind of ground pit type lifts heat-treatment furnace, can make placement copper pipe
Supporting plate is concordant with ground, convenient handling, while describes a kind of heat treatment method, and the sky for eliminating production Y2 state copper pipes is pulled through
Journey, copper pipe is set to directly generate Y2 state copper pipes after annealing.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of ground pit type lifts heat-treatment furnace, including hydraulic cylinder, cover body, supporting plate, heat-insulation layer, connecting shaft and supporting plate, heat
Treatment furnace is placed in pit foundation, and the bottom surface and side of the pit foundation are provided with fire brick layer, and the fire brick layer surface is provided with electricity
Heated filament, the pit foundation are located at the lower section of cover body, supporting plate are provided with inside the cover body, by bearing between the supporting plate and cover body
Support, the excircle of the supporting plate are connected with drive device, and the bottom of supporting plate is provided with heat-insulation layer, one end of the connecting shaft
It is connected through heat-insulation layer with the center of supporting plate bottom surface, the center connection of the other end and supporting plate, the cover body is with being arranged at ground
Following hydraulic cylinder connection.Designed using lift, pallet can be risen to the height concordant with ground, it is convenient to be heat-treated thing
Handling, eliminate the cumbersome of crane lifting, while design is made using rotation, be in heat treatment thing in heat treatment process and turn
Dynamic state, avoids heat treatment temperature uneven and influences thermal effectiveness.
Several through holes are provided with the supporting plate.Mitigate the quality of supporting plate, the operating pressure of relieving hydraulic cylinder, and make
Pit foundation space forms peripheral passage.
The supporting plate bottom is provided with pressure fan.Pressure fan, which can make to be formed in pit foundation room atmosphere, to be circulated, and is contributed to
The temperature of uniform heat-treatment furnace, improves thermal effectiveness.
The lower section of the supporting plate is provided with several support wheels.The support to supporting plate can be formed, ensures supporting plate stability of rotation,
Alleviate the pulling force in connecting shaft running simultaneously.
The support wheel circumference uniform distribution.The support force of supporting plate is evenly distributed.
The heat-insulation layer is provided with vacuum nozzle and atmosphere mouth, and passes through the pipeline vacuum tube with covering on top and air inlet respectively
Pipe connects.The vacuum and processing atmosphere in stove are controlled, expands the use range of heat-treatment furnace.
The vacuum tube is connected with vavuum pump.Pit foundation space can be made to form vibration, avoid influence of the air to heat treatment.
The air inlet pipe is connected with source of the gas.Need to add different protective atmospheres according to different, heat-treatment furnace is handled model
Enclose extensively.
The drive device includes motor, reductor and driving gear, the output of the input shaft and motor of the reductor
Axis connection, driving gear is installed on the output shaft of reductor, the driving gear engages with the gear of supporting plate excircle.Adopt
Reductor is driven with motor, is then driven by reductor by gear, by increasing capacitance it is possible to increase driving torque, supporting plate is filled
The power of foot, and ensure rotation at a slow speed.
A kind of heat treatment method of ground pit type lifting heat-treatment furnace, comprises the following steps：
Step 1：Driving hydraulic cylinder, the piston rod of hydraulic cylinder is extended, by cover body top a to high position, pallet is put down with ground
Together, heat-treatment furnace is opened；
Step 2：Need to copper pipe to be processed be uniformly placed on supporting plate；
Step 3：Driving hydraulic cylinder, withdraw the piston rod of hydraulic cylinder, cover body dropped into low level, make cover body bottom surface with
Ground contacts, and forms the pit foundation space of sealing；
Step 4：Start vavuum pump, the gas in the pit foundation space of sealing is extracted out, then as needed by protective gas
It is filled with pit foundation space；
Step 5：Heating wire is started working, reach design temperature, and be incubated setting time；
Step 6：After stove to be heated is down to room temperature, driving hydraulic cylinder extends piston rod, and cover body top a to high position makes
Pallet is concordant with ground, takes out the copper pipe that heat treatment is completed.
Beneficial effects of the present invention are：
（1）The present invention is designed using ground pit type, is not take up aboveground space, while can improve the insulation effect of heat-treatment furnace
Fruit；
（2）The supporting plate of the present invention can be lifted and rotated, and facilitate the handling of copper pipe, while can be turned in heat treatment
It is dynamic, the uniformity of heat treatment is improved, increases thermal effectiveness；
（3）The sky that the heat treatment method of the present invention eliminates production Y2 state copper pipes is pulled through journey, simplifies production process, improves
Production efficiency.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Wherein, 1, hydraulic cylinder, 2, fire brick layer, 3, drive device, 4, bearing, 5, supporting plate, 6, vacuum nozzle, 7, insulation
Layer, 8, vacuum tube, 9, air inlet pipe, 10, atmosphere mouth, 11, cover body, 12, ground, 13, connecting shaft, 14, supporting plate, 15, support wheel.
Embodiment：
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of ground pit type lifting heat-treatment furnace, including hydraulic cylinder 1, cover body 11, supporting plate 5, heat-insulation layer 7,
Connecting shaft 13 and supporting plate 14, heat-treatment furnace is placed in pit foundation, and foundation ditch is drum type, and the bottom surface and side of pit foundation are provided with refractory brick
Layer 2, the surface of fire brick layer 2 is provided with heating wire, and pit foundation is located at the lower section of cover body 11, and pit foundation and cover body 11 together form one
Closed space, referred to as pit foundation space, the inside of cover body 11 are provided with supporting plate 5, by 3, bearing between supporting plate 5 and cover body 11
Support, bearing 3 can use thrust bearing 3 or needle bearing 3, and the excircle of supporting plate 5 is connected with drive device 3, driving dress
Putting 3 includes motor, reductor and driving gear, the input shaft of the reductor and the output axis connection of motor, reductor it is defeated
Driving gear is installed, the driving gear engages with the gear of the excircle of supporting plate 5, drives and slows down using motor on shaft
Machine, then driven by reductor by gear, by increasing capacitance it is possible to increase driving torque, supporting plate 5 is obtained the power of abundance, and protect
The rotation of card at a slow speed.The bottom of supporting plate 5 is provided with heat-insulation layer 7, and heat-insulation layer 7 can also use refractory brick, and heat-insulation layer 7 is provided with true
Empty mouth 6 and atmosphere mouth 10, and be connected respectively with the vacuum tube 8 and air inlet pipe 9 at the top of cover body 11 by pipeline, control true in stove
Reciprocal of duty cycle and processing atmosphere, expand the use range of heat-treatment furnace.Vacuum tube 8 is connected with vavuum pump, can be formed pit foundation space
Vacuum, avoid influence of the air to heat treatment.Air inlet pipe 9 is connected with source of the gas, needs to add different protective atmospheres according to different,
Make heat-treatment furnace process range extensive.One end of connecting shaft 13 is connected through heat-insulation layer 7 with the center of the bottom surface of supporting plate 5, another
End is connected with the center of supporting plate 14, and several through holes are provided with supporting plate 14, mitigates the quality of supporting plate 14, relieving hydraulic cylinder 1
Operating pressure, and pit foundation space is formed peripheral passage.The bottom of supporting plate 14 is provided with pressure fan, when pressure fan works that pit foundation is empty
Between the gas at center blow upwards, reach and pit foundation space bottom dropped to by edge after top surface, such pressure fan can make pit foundation empty
Between formed in atmosphere and circulate, contribute to the temperature of uniform heat-treatment furnace, improve thermal effectiveness.The lower section of supporting plate 14 is provided with
Several support wheels 15, the support to supporting plate 14 can be formed, ensure the stability of rotation of supporting plate 14, while alleviate connecting shaft 13 and run
During pulling force.The circumference uniform distribution of support wheel 15, is evenly distributed to the support force of supporting plate 14.Cover body 11 and be arranged at ground 12 with
Under hydraulic cylinder 1 connect.Sealing ring is provided with ground 12 between hydraulic cylinder 1 and pit foundation, increases the sealing of pit foundation, adopts
Designed with lift, pallet can be risen to the height concordant with ground 12, the convenient handling for being heat-treated thing, eliminate crane
What is lifted is cumbersome, while makes design using rotation, heat treatment thing is in rotary state in heat treatment process, avoids being heat-treated
Non-uniform temperature and influence thermal effectiveness.
The cover body 11 of above-mentioned heat-treatment furnace is provided with balanced detector, can detect the poised state of cover body 11 in good time, and
And signal is passed into controller, controller is controlled the elongation speed of each hydraulic cylinder 1 so that cover body 11 rising or
Horizontality is remained during decline.After heat-treatment furnace is closed, using the snap fit around cover body 11 by cover body 11
It is fixed, cover body 11 in the course of work is prevented because the operation of motor or the rotation of supporting plate 14 are shifted over cover body 11, simultaneously
Ensure that internal pressure is more than atmospheric pressure and cover body 11 is departed from ground 12 after protective gas is filled with, and influences treatment effect.
A kind of heat treatment method of ground pit type lifting heat-treatment furnace, comprises the following steps：
Step 1：Driving hydraulic cylinder 1, the piston rod of hydraulic cylinder 1 is extended, cover body 11 is pushed up to a high position, make pallet and ground
Face 12 is concordant, opens heat-treatment furnace；
Step 2：Need to copper pipe to be processed be uniformly placed on supporting plate 14；
Step 3：Driving hydraulic cylinder 1, the piston rod of hydraulic cylinder 1 is withdrawn, cover body 11 is dropped into low level, makes cover body 11
Bottom surface contacts with ground 12, forms the pit foundation space of sealing；
Step 4：Start vavuum pump, the gas in the pit foundation space of sealing is extracted out, then as needed by protective gas
It is filled with pit foundation space；In general negative pressure first is pumped into pit foundation space using vavuum pump, by being filled with corresponding protective gas
Reach the air pressure needed for heat treatment.
Step 5：Heating wire is started working, reach design temperature, and be incubated setting time；Annealing temperature in this step
Degree is typically set between 500 DEG C ~ 600 DEG C, and annealing time is 50min ~ 90min；Then temperature is reduced and be incubated, is incubated
More than 400 DEG C of temperature, soaking time 150min ~ 230min.
Step 6：After stove to be heated is down to room temperature, driving hydraulic cylinder 1 extends piston rod, and cover body 11 is pushed up to a high position,
Make pallet concordant with ground 12, take out the copper pipe that heat treatment is completed.
Preferable 530 DEG C of annealing temperature, annealing time 70min in above-mentioned steps five；410 DEG C of holding temperature, during insulation
Between 180min.By above-mentioned heat treatment, i.e., annealed and be incubated under certain pressure and atmosphere, make hard state（Y）Copper pipe is direct
As half-hard state（Y2）, eliminate sky and be pulled through journey, improve production efficiency.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, model not is protected to the present invention
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deformation that creative work can make still within protection scope of the present invention.
Claims (3)
1. a kind of ground pit type lifts heat-treatment furnace, it is characterized in that：Including hydraulic cylinder, cover body, heat-insulation layer, supporting plate, connecting shaft and
Supporting plate, heat-treatment furnace are placed in pit foundation, and the bottom surface and side of the pit foundation are provided with fire brick layer, and the fire brick layer surface is set
Heating wire is equipped with, the pit foundation is located at the lower section of cover body, supporting plate is provided with inside the cover body, between the supporting plate and cover body
By bearings, the excircle of the supporting plate is connected with drive device, and the bottom of supporting plate is provided with heat-insulation layer, the connecting shaft
One end be connected through heat-insulation layer with the center of supporting plate bottom surface, the connection of the center of the other end and supporting plate, the cover body is with setting
Connected in the hydraulic cylinder of below ground；
Several through holes are provided with the supporting plate；
The supporting plate bottom is provided with pressure fan；
The lower section of the supporting plate is provided with several support wheels；
The heat-insulation layer is provided with vacuum nozzle and atmosphere mouth, and is connected by vacuum tube and air inlet pipe of the pipeline respectively with covering on top
Connect；
The vacuum tube is connected with vavuum pump；
The air inlet pipe is connected with source of the gas；
The drive device includes motor, reductor and driving gear, and the input shaft of the reductor and the output shaft of motor connect
Connect, driving gear is installed on the output shaft of reductor, the driving gear engages with the gear of supporting plate excircle；
Cover body is provided with balanced detector, can detect the poised state of cover body in good time, and signal is passed into controller, makes
Controller controls the elongation speed of each hydraulic cylinder, so that cover body remains horizontal during rising or decline
State；Snap fit is installed around cover body.
2. a kind of ground pit type lifting heat-treatment furnace as claimed in claim 1, it is characterized in that：The support wheel circumference uniform distribution.
A kind of 3. heat treatment method of ground pit type lifting heat-treatment furnace as claimed in claim 1, it is characterized in that including following step
Suddenly：
Step 1：Driving hydraulic cylinder, the piston rod of hydraulic cylinder is extended, by cover body top a to high position, make pallet concordant with ground, open
Open heat-treatment furnace；
Step 2：Need to copper pipe to be processed be uniformly placed on supporting plate；
Step 3：Driving hydraulic cylinder, the piston rod of hydraulic cylinder is withdrawn, cover body is dropped into low level, makes cover body bottom surface and ground
Contact, form the pit foundation space of sealing；
Step 4：Start vavuum pump, the gas in the pit foundation space of sealing is extracted out, is then as needed filled with protective gas
Pit foundation space；
Step 5：Heating wire is started working, reach design temperature, and be incubated setting time；
Step 6：After stove to be heated is down to room temperature, driving hydraulic cylinder extends piston rod, by cover body top a to high position, makes pallet
It is concordant with ground, take out the copper pipe that heat treatment is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610008849.2A CN105483351B (en) | 2016-01-07 | 2016-01-07 | A kind of ground pit type lifting heat-treatment furnace and heat treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610008849.2A CN105483351B (en) | 2016-01-07 | 2016-01-07 | A kind of ground pit type lifting heat-treatment furnace and heat treatment method |
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| Publication Number | Publication Date |
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| CN105483351A CN105483351A (en) | 2016-04-13 |
| CN105483351B true CN105483351B (en) | 2018-03-16 |
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| CN201610008849.2A Active CN105483351B (en) | 2016-01-07 | 2016-01-07 | A kind of ground pit type lifting heat-treatment furnace and heat treatment method |
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| CN107514909A (en) * | 2017-08-28 | 2017-12-26 | 罗国球 | A kind of energy-conserving and environment-protective pot arch |
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| CN102021297B (en) * | 2010-09-28 | 2012-12-19 | 南京长江工业炉科技有限公司 | Aircraft skin aging furnace |
| CN202885531U (en) * | 2012-10-29 | 2013-04-17 | 苏州新长光热能科技有限公司 | Pit type aluminum ingot heating furnace |
| CN103557705B (en) * | 2013-11-22 | 2016-05-04 | 苏州新长光热能科技有限公司 | Aluminium slab ingot hole formula heating furnace with soakage function |
| CN104498675A (en) * | 2015-01-26 | 2015-04-08 | 河北星烁锯业股份有限公司 | Insulating pit type annealing furnace and annealing treatment process |
| CN205347527U (en) * | 2016-01-07 | 2016-06-29 | 山东亨圆铜业有限公司 | Ground pit type lift heat treatment furnace |
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| CB02 | Change of applicant information |
Inventor after: Sui Changfen Inventor after: Yan Zhifu Inventor after: Nie Xiaoqiang Inventor after: Li Renwei Inventor after: Dong Tingting Inventor after: Liu Haifeng Inventor before: Yan Zhifu Inventor before: Nie Xiaoqiang Inventor before: Li Renwei Inventor before: Dong Tingting Inventor before: Luan Zhiwei Inventor before: Liu Haifeng |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190410 Address after: Room 403, 85 Huaihe Road, Dongying District, Dongying City, Shandong Province Patentee after: Shandong Xinglu Nonferrous Metals Group Co., Ltd. Address before: No. 85 Huaihe Road, Dongying Economic and Technological Development Zone, Shandong Province Patentee before: Shandong Hengyuan Copper Co., Ltd. |
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| TR01 | Transfer of patent right |