CN107142369A - thin-wall corrugated tube quick annealing method - Google Patents
thin-wall corrugated tube quick annealing method Download PDFInfo
- Publication number
- CN107142369A CN107142369A CN201710579544.1A CN201710579544A CN107142369A CN 107142369 A CN107142369 A CN 107142369A CN 201710579544 A CN201710579544 A CN 201710579544A CN 107142369 A CN107142369 A CN 107142369A
- Authority
- CN
- China
- Prior art keywords
- annealing
- thin
- corrugated tube
- wall corrugated
- cabin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Details Of Indoor Wiring (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A kind of thin-wall corrugated tube quick annealing method, including：Load cabin of annealing, electrified regulation, protective gas is protected, power-off cools, take out completion; the method for annealing can quickly finish heating anneal; the speed of annealing operation is set to match the speed of subsequent processing operations; good annealing can be carried out to thin-wall corrugated tube made of copper simultaneously; make the thin-wall corrugated tube after annealing that not only there is enough intensity, and with certain pliability.Annealing, cabin is operationally open, and annealing speed is fast, picks and places conveniently, pending product is sent into from one end, while making annealing treatment the product completed can be taken out by the other end, annealing operation streamlined is carried out, has further speeded up the speed of annealing operation.The time that is passed through of protective gas shortens, and reduces the consumption of gas, and thin-wall corrugated tube is taken out faster from annealing cabin; further improve annealing operation speed; and protective gas can not only use inert gas, nitrogen can be also used, the cost of annealing operation is greatly reduced.
Description
Technical field
Quickly thin-wall corrugated tube can be annealed the invention belongs to technical field of metal heat treatment, more particularly to one kind
Method.
Background technology
Annealing is a kind of metal heating processing technology, refers to metal being heated slowly to certain temperature, keeps enough time,
Then cooled down with Reasonable Speed.Purpose is reduction hardness, improves machinability；Residual stress is eliminated, stable dimensions are reduced and become
Shape and crackle tendency；Crystal grain thinning, adjusts tissue, eliminates tissue defects.But current annealing process, metal is after annealing
Surface can change colour, and influence the attractive in appearance of metal, it is difficult to meet the operating mode required to outward appearance, and carry out main use of annealing at present
Annealing furnace, annealing furnace is to load large batch of metal in the lump when working, and is annealed, and then again takes the metal for completing annealing
Go out, annealing operation is that interruption is carried out, heavy length of whole annealing process time so that the metal after annealing carries out following process can not
Quickly it is carried out continuously, ties down the operating efficiency of whole metal working processes, reduces the continuity of whole metal working processes.
Prior art《The not eclipsed method for annealing of the quick electrical heating of metal tube》(publication number：105177232A) propose one kind
Technical scheme, but the technical scheme throws away and there is more deficiency：1st, the straight tube smooth for tube wall of annealing, it is impossible to handle tube wall
Bellows with ripple struction；2nd, inert gas is needed long lasting for being passed through, and consumption is big, and cost is high.
The content of the invention
The present invention can not handle bellows for existing not eclipsed quick annealing method, and the larger technology of energy resource consumption is asked
Topic, proposes a kind of copper thin-wall corrugated tube quick annealing method.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of thin-wall corrugated tube quick annealing method, the thin-wall corrugated tube is copper fitting, including straight length and bellows
Section, the wall thickness of the straight length is 0.8 millimeter, and the ripple that the bellows piece is set is formed with the crest of evagination and the ripple of indent
Wall thickness at paddy, the bellows piece crest is that the wall thickness at 0.76-0.8 millimeters, the bellows piece trough is 0.74-0.78
Wall thickness at millimeter, the bellows piece trough is less than the wall thickness at the bellows piece crest.
Comprise the following steps that：
S0：Thin-wall corrugated tube is encased in annealing cabin in the fulcrum bearing that sets, to by thin-wall corrugated tube and annealing cabin
Inwall separate, the annealing cabin be both ends open tubulose；
S1：Thin-wall corrugated tube two ends are connected to the electrified wire of power supply；
S2：Protective gas is continually fed into the annealing cabin from annealing cabin one end open, so that protective gas fills
The full annealing cabin, and flowed out from another end opening in the annealing cabin；
S3：Startup power supply, carries out electrified regulation to thin-wall corrugated tube, will be heated at thin-wall corrugated tube bellows piece trough
470 DEG C~510 DEG C, the output voltage of the power supply is 5V~10V during electrified regulation, and output current is 5000A~10000A, is led to
The electric time is 0.2s~10s, so that the grain size of the thin-wall corrugated tube reaches 0.028~0.033mm；
S4：Power supply is closed, stops carrying out electrified regulation to thin-wall corrugated tube, the thin-walled is measured by far infrared temperature measurement instrument
Temperature in bellows at bellows piece trough；
S5：When temperature at bellows piece trough is less than or equal to 200 DEG C, stop sending into protective gas into annealing cabin；
And take out the thin-wall corrugated tube from the annealing cabin.
Preferably, in step S2, while the protective gas being passed through in annealing cabin is full of annealing cabin, full of thin-walled ripple
The inner chamber of pipe.
Preferably, in step S4, closing after power supply, being passed through the protective gas in the annealing cabin to the thin-walled ripple
Pipe carries out cooling down.
Preferably, the protective gas is nitrogen or inert gas.
Preferably, during step S0, the thin-wall corrugated tube is encased in the annealing cabin by the opening of cabin one end of annealing；
During step S5, the thin-wall corrugated tube is taken out by the opening for the cabin other end of annealing.
Compared with prior art, advantages and positive effects of the present invention are：
1st, the method for annealing can quickly finish heating anneal, the speed of annealing operation is matched following process work
The speed of sequence, while good annealing can be carried out to thin-wall corrugated tube made of copper, makes the thin-wall corrugated tube after annealing not
Only there is enough intensity, and with certain pliability.
2nd, annealing cabin is operationally open, and annealing speed is fast, picks and places conveniently, pending product is sent into from one end,
Making annealing treatment the product completed simultaneously can be taken out by the other end, annealing operation streamlined is carried out, further speeded up
The speed of annealing operation.
3rd, the time that is passed through of protective gas shortens, and reduces the consumption of gas, and enable thin-wall corrugated tube faster
From annealing cabin in take out, further improve annealing operation speed, and protective gas not only can use inert gas, can also adopt
With nitrogen, the cost of annealing operation is greatly reduced.
4th, protective gas is simultaneously filled with annealing cabin and thin-wall corrugated tube, and outside in thin-wall corrugated tube can be protected
Shield, it is to avoid external oxidation in thin-wall corrugated tube, improves annealing quality., can be right while protective gas is protected to thin-wall corrugated tube
Thin-wall corrugated tube carries out cooling down, accelerates the speed of annealing operation, enables thin-wall corrugated tube earlier from annealing cabin
Take out.
Brief description of the drawings
Accompanying drawing 1 is the implementation schematic diagram of thin-wall corrugated tube quick annealing method.
Above in each figure：1st, thin-wall corrugated tube；1.1st, straight length；1.2nd, bellows piece；1.2.1, crest；1.2.2, ripple
Paddy；2nd, annealing cabin；3rd, first gas passage；4th, second gas passage；5th, power supply；5.1st, electrified wire.
Embodiment
Below, the present invention is specifically described by exemplary embodiment.It should be appreciated, however, that not entering one
In the case of step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiment
In.
In the description of the invention, it is necessary to explanation, the instruction such as term " interior ", " outer ", " on ", " under ", "front", "rear"
Orientation or position relationship be based on position relationship shown in the drawings, be for only for ease of description the present invention and simplify description, and
It is not instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " are only used for describing purpose, and it can not manage
Solve to indicate or imply relative importance.
As shown in figure 1, in thin-wall corrugated tube quick annealing method, it is necessary to the thin-wall corrugated tube 1 annealed be copper fitting,
As copper pipe, thin-wall corrugated tube 1 includes the straight length 1.1 of straight-tube shape and the bellows piece 1.2 provided with ripple struction.
The wall thickness of the straight length 1.1 of thin-wall corrugated tube 1 is 0.8 millimeter.The ripple that the bellows piece 1.2 of thin-wall corrugated tube 1 is set
It is 0.76-0.8 to be formed with the wall thickness at the crest 1.2.1 of evagination and the trough 1.2.2 of indent, the crest 1.2.1 of bellows piece 1.2
Wall thickness at millimeter, the trough 1.2.2 of bellows piece 1.2 is that the wall thickness at 0.74-0.78 millimeters, bellows piece trough is less than ripple
Wall thickness at pipeline section crest.
Thin-wall corrugated tube quick annealing method is comprised the following steps that：
The thin-wall corrugated tube 1 of a said structure is encased in the fulcrum bearing 2.1 set in annealing cabin 2.Annealing cabin 2
For the tubulose of both ends open, fulcrum bearing 2.1 is made up of insulation and the weaker material of heat conductivility.In annealing cabin 2, fulcrum bearing
2.1 prop up thin-wall corrugated tube 1, to by thin-wall corrugated tube 1 and anneal cabin 2 inwall separate, make the outer wall of thin-wall corrugated tube 1 with
The first gas passage 3 for being capable of circulation airflow is formed between the annealing inwall of cabin 2, and the inside of thin-wall corrugated tube 1 inner chamber of itself is
With the second gas passage 4 for being capable of circulated gases.
The two ends of thin-wall corrugated tube 1 are connected to the electrified wire 5.1 of power supply 5, the one end of thin-wall corrugated tube 1 passes through electrified wire
5.1 are connected with the positive pole of power supply 5, and the other end is connected by electrified wire 5.1 with the negative pole of power supply 5.
Protective gas is continually fed into annealing cabin 2 from the annealing one end open of cabin 2, so that protective gas is full of annealing cabin 2.
After protective gas is full of annealing cabin 2, because protective gas is still passed into annealing cabin 2 continual, it will come into
Protective gas in annealing cabin 2 pushes the other end in annealing cabin 2 to, and is flowed out from another end opening in the annealing cabin 2.
Protective gas is nitrogen or inert gas, will not be reacted when heated with thin-wall corrugated tube 1, will not make thin-walled ripple
The oxidation stain of line pipe 1.While the protective gas being passed through in annealing cabin 2 is full of annealing cabin 2, the inner chamber full of thin-wall corrugated tube 1,
While the protective gas is moved axially along in cabin 2 of annealing, protective gas has been simultaneously filled with first gas passage 3 and the
Protective gas in two gas passages 4, first gas passage 3 and second gas passage 4 protects the outer wall of thin-wall corrugated tube 1 respectively
And inwall.
Startup power supply 5, carries out electrified regulation, by the trough 1.2.2 of 1 bellows piece of thin-wall corrugated tube 1.2 to thin-wall corrugated tube 1
Place is heated to 470 DEG C~510 DEG C, makes the grain size of thin-wall corrugated tube 1 (i.e.：The average length or diameter of crystal grain in unit area)
Reach 0.028~0.033mm.
Temperature at the trough 1.2.2 of bellows piece 1.2 is measured by far infrared temperature measurement instrument, during electrified regulation,
Protective gas has been simultaneously filled with first gas passage 3 and second gas passage 4, the outer wall of thin-wall corrugated tube 1 is protected respectively and interior
Wall, will not have oxygen to be contacted with thin-wall corrugated tube 1, it is to avoid thin-wall corrugated tube 1, make the annealing nondiscolouring of thin-wall corrugated tube 1, improve
Annealing quality.
When power supply 5 carries out electrified regulation to thin-wall corrugated tube 1, electric current is flowed to another by thin-wall corrugated tube 1 by one end
End.Due to and electric current easily flows through the position of thinner thickness, therefore during electrical heating, the relatively thin position of wall thickness is easily heated
To too high temperature, the thin-wall corrugated tube after annealing 1 is become fragile, reduce pliability, make bellows piece 1.2 due to using progress
During bending, easily rupture, cause leakage.
The thin and thick of thin-wall corrugated tube 1 is relatively thin, and the wall thickness at the crest 1.2.1 of bellows piece 1.2 is more than the wall at trough 1.2.2
Thickness, the wall thickness of straight length 1.1 is less than the wall thickness of bellows piece 1.2 again.During electrified regulation, control the bellows of thin-wall corrugated tube 1
470 DEG C~510 DEG C are heated at 1.2 trough 1.2.2 of section, certain part of thin-wall corrugated tube 1 can be avoided to be heated by transition, simultaneously
The overall various pieces of thin-wall corrugated tube 1 are made to be heated to enough annealing temperatures, and the overall crystal grain of thin-wall corrugated tube 1
Degree reaches 0.028~0.033mm, thin-wall corrugated tube 1 is had enough intensity, while having certain pliability, during bending
It is not easily broken.
The output voltage of power supply 5 is 5V~10V during electrified regulation, and output current is 5000A~10000A, and conduction time is
0.2s~10s.The energy produced by Current Voltage combination, the thin-wall corrugated tube by wall thickness less than 1mm, in a short time quickly
Design temperature is heated to, makes the short annealing of thin-wall corrugated tube 1.
During electrified regulation, because protective gas is continually fed into and by cabin 2 of annealing, just it is passed through in annealing cabin 2
Protective gas temperature is relatively low, and the heat transfer on thin-wall corrugated tube 1 is slower to the speed of protective gas.Therefore thin-walled ripple
When pipe 1 is rapidly heated by electrified regulation, because the whole process time is shorter, the heat on thin-wall corrugated tube 1 only has small part
It is delivered in protective gas, protective gas is not interfered with the quick heating of thin-wall corrugated tube 1.
Power supply 5 is closed, stops carrying out electrified regulation to thin-wall corrugated tube 1, thin-walled ripple is measured by far infrared temperature measurement instrument
Temperature in pipe 1 at the trough 1.2.2 of bellows piece 1.2,1.2.2 temperature is less than or equal to 200 DEG C at the trough of bellows piece 1.2
When,
The overall temperature of thin-wall corrugated tube 1 will be less than the temperature of copper high-temperature oxydation, stop the feeding protection gas into annealing cabin 2
Body, reduce protective gas consumption, while ensure that thin-wall corrugated tube 1 will not oxidation stain, realize it is not eclipsed and quick
Annealing.
Stop into annealing cabin 2 after feeding protective gas, the temperature without waiting for thin-wall corrugated tube 1 is reduced to room temperature, can
Thin-wall corrugated tube 1 is taken out from annealing cabin 2 immediately, so that cabin 2 of annealing loads new thin-wall corrugated tube 1, moved back next time
Fiery operation, accelerates the overall speed of annealing operation.
In order that the fast cooling of thin-wall corrugated tube 1 to 200 DEG C once, so as to as early as possible from annealing cabin 2 in take out, close power supply
5 and stop to thin-wall corrugated tube 1 carry out electrified regulation after, be passed through annealing cabin 2 in protective gas thin-wall corrugated tube 1 is dropped
Temperature cooling, accelerates the speed of annealing operation.
In order that annealing operation serialization, accelerates operating efficiency, thin-wall corrugated tube 1 is loaded by the opening of one end of cabin 2 of annealing
Into annealing cabin 2, the electrified regulation annealing in annealing cabin 2 after the completion of then cooling down, is taken out by the opening for the other end of cabin 2 of annealing.
While a thin-wall corrugated tube 1 is removed in annealing cabin 2, another thin-wall corrugated tube 1 loads annealing cabin, is formed
Continuous productive process, further speeds up the speed of annealing operation, so as to the speeds match with subsequent processing operations.
Testing result is as follows to be detected to thin-wall corrugated tube made of copper after annealing：
Claims (5)
1. a kind of thin-wall corrugated tube quick annealing method, the thin-wall corrugated tube is copper fitting, including straight length and bellows piece,
The wall thickness of the straight length is 0.8 millimeter, and the ripple that the bellows piece is set is formed with the crest of evagination and the trough of indent,
Wall thickness at the bellows piece crest is that the wall thickness at 0.76-0.8 millimeters, the bellows piece trough is 0.74-0.78 millis
Wall thickness at rice, the bellows piece trough is less than the wall thickness at the bellows piece crest；
Characterized in that, step is as follows：
S0：Thin-wall corrugated tube is encased in the fulcrum bearing set in annealing cabin, to by thin-wall corrugated tube and annealing cabin
Wall is separated, and the annealing cabin is the tubulose of both ends open；
S1：Thin-wall corrugated tube two ends are connected to the electrified wire of power supply；
S2：Protective gas is continually fed into the annealing cabin from annealing cabin one end open, so that protective gas is full of institute
Annealing cabin is stated, and is flowed out from another end opening in the annealing cabin；
S3：Startup power supply, carries out electrified regulation to thin-wall corrugated tube, will be heated to 470 at thin-wall corrugated tube bellows piece trough
DEG C~510 DEG C, the output voltage of the power supply is 5V~10V during electrified regulation, and output current is 5000A~10000A, is powered
Time is 0.2s~10s, so that the grain size of the thin-wall corrugated tube reaches 0.028~0.033mm；
S4：Power supply is closed, stops carrying out electrified regulation to thin-wall corrugated tube, the thin-walled ripple is measured by far infrared temperature measurement instrument
Temperature in pipe at bellows piece trough；
S5：When temperature at bellows piece trough is less than or equal to 200 DEG C, stop sending into protective gas into annealing cabin, and will
The thin-wall corrugated tube takes out from the annealing cabin.
2. in thin-wall corrugated tube quick annealing method according to claim 1, it is characterised in that in step S2, annealing cabin
While the protective gas being passed through is full of annealing cabin, the inner chamber full of thin-wall corrugated tube.
3. thin-wall corrugated tube quick annealing method according to claim 1, it is characterised in that in step S4, closes power supply
Afterwards, the protective gas being passed through in the annealing cabin carries out cooling down to the thin-wall corrugated tube.
4. thin-wall corrugated tube quick annealing method according to claim 1, it is characterised in that the protective gas is nitrogen
Or inert gas.
5. thin-wall corrugated tube quick annealing method according to claim 1, it is characterised in that during step S0, the thin-walled
Bellows is encased in the annealing cabin by the opening of cabin one end of annealing；During step S5, the thin-wall corrugated tube is another by cabin of annealing
The opening of one end is taken out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710579544.1A CN107142369B (en) | 2017-07-17 | 2017-07-17 | thin-wall corrugated tube quick annealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710579544.1A CN107142369B (en) | 2017-07-17 | 2017-07-17 | thin-wall corrugated tube quick annealing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107142369A true CN107142369A (en) | 2017-09-08 |
| CN107142369B CN107142369B (en) | 2018-12-18 |
Family
ID=59775851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710579544.1A Active CN107142369B (en) | 2017-07-17 | 2017-07-17 | thin-wall corrugated tube quick annealing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107142369B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959084A (en) * | 2021-02-05 | 2021-06-15 | 安徽耀强精轮机械有限公司 | Processing technology and processing device for buffer type safe steering connection intermediate shaft |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224065A (en) * | 1998-01-22 | 1999-07-28 | 上海奉贤钢管厂 | Process for treatment of precision bright seamless steel tube |
| CN202968636U (en) * | 2012-11-22 | 2013-06-05 | 天津钢管集团股份有限公司 | Vacuum-annealing thermal treatment furnace for titanium alloy tubes |
| CN105177232A (en) * | 2015-10-20 | 2015-12-23 | 左铁军 | Rapid electric heating color-loss-free annealing method for metal tube |
-
2017
- 2017-07-17 CN CN201710579544.1A patent/CN107142369B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224065A (en) * | 1998-01-22 | 1999-07-28 | 上海奉贤钢管厂 | Process for treatment of precision bright seamless steel tube |
| CN202968636U (en) * | 2012-11-22 | 2013-06-05 | 天津钢管集团股份有限公司 | Vacuum-annealing thermal treatment furnace for titanium alloy tubes |
| CN105177232A (en) * | 2015-10-20 | 2015-12-23 | 左铁军 | Rapid electric heating color-loss-free annealing method for metal tube |
Non-Patent Citations (2)
| Title |
|---|
| 潘家祯等: "《化工机械新技术研究进展》", 31 July 2008, 华东理工大学出版社 * |
| 马小明等: "《管式换热器》", 31 January 2010, 中国石化出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959084A (en) * | 2021-02-05 | 2021-06-15 | 安徽耀强精轮机械有限公司 | Processing technology and processing device for buffer type safe steering connection intermediate shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107142369B (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101229602B (en) | Method of welding thermistance chip and down lead | |
| CN205295391U (en) | Inert gas protection annealing stove | |
| CN109425107A (en) | A kind of hot-blast stove of high-voltage operation | |
| CN107142369A (en) | thin-wall corrugated tube quick annealing method | |
| CN101748267B (en) | Continuous annealing technology for hot-rolled pure titanium roll | |
| CN104134777A (en) | High-efficiency deep water removal method and drying line for lithium ion battery or battery pole piece | |
| CN207944125U (en) | A kind of Equipment for Heating Processing of alloy material | |
| CN104955966B (en) | The furnace atmosphere adjusting method of continuous heat treating furnace | |
| CN104630443B (en) | Large-scale cylindrical shell section heat treatment method | |
| CN215288917U (en) | Convenient annealing heat-preservation cover for electroslag ingot | |
| CN203501800U (en) | Device for quickly cooling heating chamber of box-type heat treatment furnace | |
| CN105198196A (en) | Quick automatic cooling unit for annealing furnaces | |
| CN204556376U (en) | The electronic rail set of a kind of elevated temperature tension test machine | |
| CN104561869B (en) | A kind of titanium alloy profile stretch wrap forming situ heat treatment method | |
| CN208200738U (en) | A kind of uniformly heated annealing furnace | |
| CN207904345U (en) | A kind of special argon annealed furnace apparatus of sintering for titanium carbide production and processing | |
| CN106755921A (en) | Austenitic stainless steel pressure piping weld joint stable heat treatment system | |
| CN103469134B (en) | Titanium or titanium alloy coils continuous annealer and the method for annealing of a material | |
| CN202928340U (en) | Heat oven | |
| CN207619513U (en) | A kind of well formula nitriding furnace | |
| CN206799716U (en) | A kind of turbine blade steel production vacuum smelting device | |
| CN209210871U (en) | A kind of Copper fabrication annealing device | |
| CN101186958A (en) | Double-chamber high-pressure gas-quenching vacuum furnace | |
| CN207259544U (en) | A kind of online bright solution treatment equipment | |
| CN205473907U (en) | Roll annealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |