CN107794351B - A kind of middle low temperature oil bath tempering equipment - Google Patents
A kind of middle low temperature oil bath tempering equipment Download PDFInfo
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- CN107794351B CN107794351B CN201710850243.8A CN201710850243A CN107794351B CN 107794351 B CN107794351 B CN 107794351B CN 201710850243 A CN201710850243 A CN 201710850243A CN 107794351 B CN107794351 B CN 107794351B
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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
- C21D1/34—Methods of heating
- C21D1/44—Methods of heating in heat-treatment baths
- C21D1/50—Oil baths
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Heat Treatment Of Articles (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The present invention provides a kind of middle low temperature oil bath tempering equipments; including furnace body, vacuumize protective atmosphere system, hot-oil circulation system, the cold oil circulatory system; vacuumizing protective atmosphere system includes that three snorkels, the vacuum pump being connected to by three snorkels with furnace body inner cavity and the steel cylinder for storing inert gas, steel cylinder are connect with three snorkels；Hot-oil circulation system includes that hot oil tank, the first hot oil pump, heater are connected to the hot oil circulating pipeline of furnace body with both ends, and hot oil tank, the first hot oil pump, heater are connected in turn on hot oil circulating pipeline；The cold oil circulatory system includes that the second hot oil pump, cold oil tank are connected to the cold oil circulation line of furnace body with both ends, and the second hot oil pump and cold oil tank are both connected on cold oil circulation line.By heating tempering oil under conditions of being fully sealed and kept the temperature, eliminate tempering oil because contact with air aoxidize caused by aging, while eliminating oil smoke, and higher tempering temperature can be obtained, while after completion is tempered and processes.
Description
Technical field
Equipment the invention belongs to be handled for lonneal in components in metal heat treatmet industry.
Background technique
Tempering is will to be heated to critical point AC1 proper temperature below by the workpiece of quenching to keep certain time, then
It is cooling with satisfactory method, to obtain a kind of heat treatment process of required tissue and performance.
When implementing tempering process, a variety of tempering equipments can be used.According to heating source difference, there are electric heating and gas heating
Tempering furnace；According to device structure difference, there are chamber type annealing stove, well formula tempering furnace etc.；It is different according to workpiece transmission mode, there is mesh belt
Formula tempering furnace, car-type tempering furnace etc.；And it is different according to " passing hot medium ", then there are air tempering furnace, atmosphere tempering furnace, salt bath
Tempering furnace, oil bath tempering furnace, vacuum tempering furnace etc..Wherein, air and atmosphere tempering furnace pass through gaseous exchange for the heat of heating source
Amount passes to workpiece, there are problems that gas flowing is uneven and leads to non-uniform temperature；Vacuum tempering is conducted heat by heat radiation,
It is generally used for the tempering of 400 DEG C or more high temperatures, poor temperature uniformity when lonneal, low efficiency.And salt bath and oil bath tempering furnace
It is using liquid as heat transfer medium, each workpiece is directly contacted with liquid, therefore, the temperature uniformity of salt bath and oil bath tempering
Height, the consistency and stability of workpiece quality are good.Wherein, salt bath can be used for high temperature tempering, and oil bath is usually used in lonneal.
However, generalling use the industrial chemicals such as nitrate, nitrite when salt bath is tempered, there is very big destruction to environment
Effect, therefore only used at present in key areas such as military projects, it has been prohibited or has limited use in general manufacturing.And oil bath is tempered
When, that there are tempering temperatures is low, oil bath service life is short, oil smoke leaks leads to problems such as working environment poor.Generate the above problem
Basic reason is in current technology that tempering oil contacts with each other with air, and at a certain temperature, tempering oil and oxygen are sent out
Raw reaction, thus generate oil smoke, parrot coal, aging etc..
The some novel backfire equipment proposed at present, have focused largely in the improvement of structure.For example, application No. is
2010102014547 patent discloses a kind of mesh-belt type hot air tempering furnace, is furnished with large-scale rotation blower in furnace, makes in-furnace temperature
Keep uniform；Application No. is 2014108037540 patents to disclose a kind of vertical continous way tempering furnace, using above sending formula next time
Air-supply structure improves temperature uniformity, reduces occupation area of equipment；Application No. is 2007100246552 patents to disclose one
Kind pushing-bar type continuous vacuum tempering and annealing multi-purpose furnace, it is therefore an objective to it is low to solve vacuum tempering furnace production efficiency, it is difficult to adapt to high-volume
The needs of production.In addition, the patent of application number 2007100246783 is then based on lonneal compared with the status for mostly using oil bath, benefit
With solar energy heating oil bath, reach energy-saving effect.There are also cleaning and degreasing is tempered integrated vacuum tempering equipment, first to vacuum
The workpiece of oil quenching carries out vacuum degreasing, then vacuum tempering (application number 200710132904X), needs manually clearly before solving tempering
It washes, and reduces pollution of the greasy dirt to workpiece.
Summary of the invention
The present invention is directed to invent one kind using oil as heat medium, to the Equipment for Heating Processing that workpiece is tempered, by making back
Kerosene is heated and is kept the temperature under conditions of being fully sealed, eliminate tempering oil because contacted with air aoxidize caused by always
Change, while eliminating oil smoke, and higher tempering temperature can be obtained, while after completing tempering processing.
Object of the invention can be realized by the following technical scheme: a kind of middle low temperature oil bath tempering equipment, including furnace body,
Vacuumize protective atmosphere system, hot-oil circulation system, the cold oil circulatory system, which is characterized in that vacuumize protective atmosphere system packet
Include three snorkels, the vacuum pump being connected to by three snorkels with furnace body inner cavity and the steel cylinder for storing inert gas, steel cylinder and three
Snorkel connection；Hot-oil circulation system includes that hot oil tank, the first hot oil pump, heater are connected to the hot-oil circulation pipe of furnace body with both ends
Road, hot oil tank, the first hot oil pump, heater are connected in turn on hot oil circulating pipeline；The cold oil circulatory system includes the second hot oil
Pump, cold oil tank are connected to the cold oil circulation line of furnace body with both ends, and the second hot oil pump and cold oil tank are both connected to cold oil circulation line
On.
Further, low temperature oil bath tempering equipment further includes clean cycle system in this, and clean cycle system includes cleaning
Water pump, cleaning agent holding vessel and both ends are connected to the clean cycle pipeline of furnace body, and the flushing water pump, cleaning agent holding vessel are connected to
On clean cycle pipeline, cleaning agent is stored in cleaning agent holding vessel.
The tempering of workpiece, cooling, cleaning three process are completed in furnace body, do not need travelling workpiece, Er Qiejun halfway
It is to be completed in the furnace body of sealing, and leak in processing without oil smoke, Environmental Safety.Clean cycle system can be accessed after cooling at once
System, the middle cleaning for completing workpiece directly in furnace body.
Further, cold oil circulation line further includes heat exchanger and Cool oil machine, and heat exchanger is connected to the second hot oil pump
On cold oil circulation line between furnace body, Cool oil machine is connected on the heat exchanger.By heat exchanger by cold oil circulation line
On oily heat be transformed on oil cooling machine, be quickly cooled down the hot oil on cold oil circulation line.
Further, the hot oil circulating pipeline between furnace body and hot oil tank is equipped with oil fume separator, oil fume separator
Escape pipe is connected to the head tank equipped with cold oil, and head tank also has the repairing pipe to oil fume separator conveying cold oil.It isolates
The oil smoke come becomes cold oil again after head tank is cooling, is stored in head tank, after the oil consumption of hot-oil circulation system is a part of,
Cold oil is supplemented into hot-oil circulation system from head tank, hot oil is heated by heater.
Further, three snorkel, hot oil circulating pipeline, cold oil circulation line, clean cycle pipeline are equipped with electricity
Magnet valve.Four systems are connected with furnace body respectively, and by the switching between solenoid valve control realization system, only access a set of system every time
System.
Working principle: low temperature oil bath tempering equipment is by being fully sealed working region in this, after picking and placing workpiece, Sealing furnace
Furnace body is vacuumized and is filled with inert gas by body, prevents contact of the tempering oil at high temperature with air, is eliminated because oxidized zone comes
Tempering oil problem of aging；Simultaneously after furnace sealing, furnace body inner cavity is isolated with external environment, and tempering oil decomposes production at high temperature
Raw oil smoke is entered in the cold oil of head tank by gs-oil separator, and oil smoke cooling in head tank becomes cold oil again, is not in
Oil smoke problem.When hot-oil circulation system lacks hot oil, cold oil is conveyed to oil fume separator by head tank, cold oil enters heat
Oil circuit piping.Simultaneously because tempering oil is fully sealed, some high temperature resistant tempering oils can be used, the upper of tempering temperature is improved
Limit, can generally reach 400 DEG C.
By electromagnetism valve closure hot oil circulating pipeline after the completion of tempering, open cold oil circulation line, towards furnace body in spray it is cold
Oil is rapidly cooled workpiece by cold oil, and the cold oil of recycling flow back into cold oil tank.
Cold oil circulation line is closed by solenoid valve after the completion of cooling, opens clean cycle pipeline, towards furnace body in injection clearly
Lotion carries out washing and cleaning operation to workpiece, and the cleaning agent of recycling is flow back into cleaning agent holding vessel.
Compared with the prior art, the present invention has the following beneficial effects:
1, furnace body and each system are worked under sealed environment, no oil smoke, environmental protection；
2, it is vacuumized in furnace body and reinjects inert gas, eliminated because aoxidizing bring tempering oil problem of aging, extend
Tempering oil service life；
3, for tempering temperature height, it can be achieved that part average tempering, tempering temperature is uniform, the quality uniformity of each workpiece is good,
Performance is stablized；
4, it is tempered, cleans and completed in same equipment, workpiece is cleaned without greasy dirt.
Detailed description of the invention
Fig. 1 is the schematic diagram of low temperature oil bath tempering equipment in this.
In figure, 1, furnace body；2, three snorkel；3, vacuum pump；4, steel cylinder；5, hot oil tank；6, the first hot oil pump；7, it heats
Device；8, hot oil circulating pipeline；9, the second hot oil pump；10, cold oil tank；11, cold oil circulation line；12, heat exchanger；13, cold oil
Machine；14, flushing water pump；15, cleaning agent holding vessel；16, clean cycle pipeline；17, oil fume separator；18, head tank；19, go out
Tracheae；20, repairing pipe；21, solenoid valve.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As shown in Figure 1, low temperature oil bath tempering equipment in this, including furnace body 1, vacuumize protective atmosphere system, hot-oil circulation
System, the cold oil circulatory system, clean cycle system, which is characterized in that vacuumize protective atmosphere system and include three snorkels 2, lead to
The vacuum pump 3 and the steel cylinder 4 for storing inert gas that three snorkels 2 are connected to 1 inner cavity of furnace body are crossed, steel cylinder 4 and three snorkels 2 connect
It connects；Hot-oil circulation system includes that hot oil tank 5, the first hot oil pump 6, heater 7 are connected to the hot oil circulating pipeline 8 of furnace body 1 with both ends,
Hot oil tank 5, the first hot oil pump 6, heater 7 are connected in turn on hot oil circulating pipeline 8；The cold oil circulatory system includes the second hot oil
Pump 9, cold oil tank 10 are connected to the cold oil circulation line 11 of furnace body 1 with both ends, and the second hot oil pump 9 and cold oil tank 10 are both connected to cold oil
On circulation line 11；Clean cycle system includes that flushing water pump 14, cleaning agent holding vessel 15 are connected to the cleaning of furnace body 1 with both ends and follow
Endless tube road 16, the flushing water pump 14, cleaning agent holding vessel 15 are connected on clean cycle pipeline 16, in cleaning agent holding vessel 15
Store cleaning agent.
The tempering of workpiece, cooling, cleaning three process are completed in furnace body 1, do not need travelling workpiece, Er Qiejun halfway
It is to be completed in the furnace body 1 of sealing, and leak in processing without oil smoke, Environmental Safety.Clean cycle can be accessed after cooling at once
System, the middle cleaning for completing workpiece directly in furnace body 1.
Cold oil circulation line 11 further includes heat exchanger 12 and Cool oil machine 13, and heat exchanger 12 is connected to the second hot oil pump 9
On cold oil circulation line 11 between furnace body 1, Cool oil machine 13 is connected on heat exchanger 12.By heat exchanger 12 by cold oil
Oily heat on circulation line 11 is transformed on oil cooling machine, is quickly cooled down the oil on cold oil circulation line 11.
Hot oil circulating pipeline 8 between furnace body 1 and hot oil tank 5 is equipped with oil fume separator 17, and oil fume separator 17 goes out
Tracheae 19 is connected to the head tank 18 equipped with cold oil, and head tank 18 also has the repairing pipe that cold oil is conveyed to oil fume separator 17
20.The oil smoke separated becomes cold oil again after head tank 18 is cooling, is stored in head tank 18, when the oil of hot-oil circulation system
After consumption a part, cold oil is supplemented into hot-oil circulation system from head tank 18, hot oil is heated by heater 7.
Solenoid valve is equipped on three snorkels 2, hot oil circulating pipeline 8, cold oil circulation line 11 and clean cycle pipeline 16
21.Four systems are connected with furnace body 1 respectively, and control the switching between realization system by solenoid valve 21, only access every time a set of
System.
Working principle: low temperature oil bath tempering equipment is by being fully sealed working region in this, after picking and placing workpiece, Sealing furnace
Furnace body 1 is vacuumized and is filled with inert gas by body 1, is prevented contact of the tempering oil at high temperature with air, is eliminated because of oxidized zone
The tempering oil problem of aging come.
After furnace body 1 seals simultaneously, 1 inner cavity of furnace body is isolated with external environment, and tempering oil decomposes the oil of generation at high temperature
Cigarette is entered by gs-oil separator in the cold oil of head tank 18, and it is not in oil that oil smoke cooling in head tank 18, which becomes cold oil again,
Cigarette problem.When hot-oil circulation system lacks hot oil, cold oil is conveyed to oil fume separator 17 by head tank 18, cold oil enters
Hot oil circulating pipeline 8.Simultaneously because tempering oil is fully sealed, some high temperature resistant tempering oils can be used, tempering temperature is improved
The upper limit, can generally reach 400 DEG C.
Hot oil circulating pipeline 8 is closed by solenoid valve 21 after the completion of tempering, cold oil circulation line 11 is opened, towards in furnace body 1
Cold oil is sprayed, workpiece is rapidly cooled by cold oil, the cold oil of recycling flow back into cold oil tank 10.
Cold oil circulation line 11 is closed by solenoid valve 21 after the completion of cooling, clean cycle pipeline 16 is opened, towards in furnace body 1
Jet cleaner carries out washing and cleaning operation to workpiece, and the cleaning agent of recycling is flow back into cleaning agent holding vessel 15.
Concrete operations are as follows:
Operating process:
One, bell is opened, workpiece is put into, seals bell；
Two, it vacuumizes, protective atmosphere system access furnace body 1, realizes in furnace body 1 without air；
Three, hot-oil circulation system access furnace body 1 realizes the oil bath tempering work of workpiece；
Four, the cold oil circulatory system accesses furnace body 1, realizes the rapid cooling of workpiece；
Five, clean cycle system access furnace body 1 realizes the cleaning of workpiece；
Six, bell is opened, workpiece is taken out, the entire surface cleaning that is tempered is completed.
Claims (4)
1. a kind of middle low temperature oil bath tempering equipment, including furnace body, vacuumizes protective atmosphere system, hot-oil circulation system, cold oil and follow
Loop system, which is characterized in that vacuumize protective atmosphere system and include three snorkels, be connected to furnace body inner cavity by three snorkels
Vacuum pump and the steel cylinder for storing inert gas, steel cylinder are connect with three snorkels；Hot-oil circulation system includes hot oil tank, the first heat
Oil pump, heater and both ends are connected to the hot oil circulating pipeline of furnace body, and hot oil tank, the first hot oil pump, heater are connected to heat in turn
Oil circulating pipe road；The cold oil circulatory system includes that the second hot oil pump, cold oil tank are connected to the cold oil circulation line of furnace body with both ends, and
Two hot oil pumps and cold oil tank are both connected on cold oil circulation line, and low temperature oil bath tempering equipment further includes clean cycle system in this
System, clean cycle system include that flushing water pump, cleaning agent holding vessel are connected to the clean cycle pipeline of furnace body, the cleaning with both ends
Water pump, cleaning agent holding vessel are connected on clean cycle pipeline, and cleaning agent is stored in cleaning agent holding vessel.
2. middle low temperature oil bath tempering equipment according to claim 1, which is characterized in that cold oil circulation line further includes hot friendship
Parallel operation and Cool oil machine, heat exchanger are connected on the cold oil circulation line between the second hot oil pump and furnace body, and Cool oil machine is connected to
On heat exchanger.
3. middle low temperature oil bath tempering equipment according to claim 2, which is characterized in that the hot oil between furnace body and hot oil tank
Circulation line is equipped with oil fume separator, and the escape pipe of oil fume separator is connected to the head tank equipped with cold oil, and head tank also has
The repairing pipe of oriented oil fume separator conveying cold oil.
4. middle low temperature oil bath tempering equipment according to claim 3, which is characterized in that three snorkel, hot-oil circulation
Pipeline, cold oil circulation line, clean cycle pipeline are equipped with solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710850243.8A CN107794351B (en) | 2017-09-20 | 2017-09-20 | A kind of middle low temperature oil bath tempering equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710850243.8A CN107794351B (en) | 2017-09-20 | 2017-09-20 | A kind of middle low temperature oil bath tempering equipment |
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| CN107794351A CN107794351A (en) | 2018-03-13 |
| CN107794351B true CN107794351B (en) | 2019-06-18 |
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| CN114990313A (en) * | 2022-05-25 | 2022-09-02 | 杭州保佳弹簧有限公司 | Spring continuous tempering furnace and tempering process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5380378A (en) * | 1993-04-23 | 1995-01-10 | Gas Research Institute | Method and apparatus for batch coil annealing metal strip |
| CN101333585A (en) * | 2007-06-27 | 2008-12-31 | 吴江市天地人真空炉业有限公司 | Solar oil temperature tempering furnace |
| CN201058881Y (en) * | 2007-06-29 | 2008-05-14 | 李重达 | Elastic chuck heat-treatment apparatus |
| CN101135055A (en) * | 2007-09-20 | 2008-03-05 | 吴江市天地人真空炉业有限公司 | Vacuum cleaning degreasing tempering furnace |
| CN103131830A (en) * | 2012-12-24 | 2013-06-05 | 苏州工业园区杰士通真空技术有限公司 | Vacuum oil quenching furnace quenching cooling control system |
| CN103834790B (en) * | 2014-03-10 | 2016-03-09 | 宜兴市永昌轧辊有限公司 | A kind of high-temperature homogeneity cold roll tempering heat treatment equipment |
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Denomination of invention: Medium and low temperature oil bath tempering equipment Effective date of registration: 20221024 Granted publication date: 20190618 Pledgee: Agricultural Bank of China Limited by Share Ltd. Haining branch Pledgor: HAINING XINYI ELECTROMECHANICAL Co.,Ltd. Registration number: Y2022980019391 |
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