CN1232659C - Continuous staged or isothermal quenching cooling apparatus - Google Patents
Continuous staged or isothermal quenching cooling apparatus Download PDFInfo
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- CN1232659C CN1232659C CN 02137258 CN02137258A CN1232659C CN 1232659 C CN1232659 C CN 1232659C CN 02137258 CN02137258 CN 02137258 CN 02137258 A CN02137258 A CN 02137258A CN 1232659 C CN1232659 C CN 1232659C
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- transport tape
- quenching
- transmission band
- fast
- immersion liquid
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Abstract
The present invention relates to a continuous staged or isothermal quenching cooling apparatus which belongs to the field of the heat treatment of metal materials. The continuous staged or isothermal quenching cooling apparatus mainly comprises an immersion liquid quenching tank, a falling cylinder for a hot work piece, an infrared thermoscope, a spray cool transmission band, nozzles, a transmission band of an isothermal furnace, and the isothermal furnace, wherein the falling cylinder for a hot work piece is inserted into a solution of the immersion liquid quenching tank. An upper opening of the falling cylinder for a hot work piece is aligned to a feed opening of a heating furnace, a lower opening is aligned to the position of an initial end which horizontally moves on a plane surface on the spray cool transmission band, the nozzles are arranged at the circumference of the spray cool transmission band, the initial end which horizontally moves on the plane surface on the spray cool transmission band is arranged below the tail end of a movement plane surface on a rapid lifting transmission band of the immersion liquid quenching tank, the tail end is arranged above the initial end which horizontally moves on the plane surface on the transmission band of the isothermal furnace, the great mass of the transmission band of the isothermal furnace is arranged in a heating chamber of the isothermal furnace, and the infrared thermoscope is arranged above the tail end of the movement plane surface on the rapid lifting transmission band and above a region which horizontally moves on the plane surface on the spray cool transmission band. The continuous staged or isothermal quenching cooling apparatus has the characteristics of low cost, no pollution and safe production. The size of a quenching piece is not limited.
Description
Technical field
What the present invention relates to is a kind of classification or isothermal quenching cooling apparatus, and particularly a kind of continuous staged or isothermal quenching cooling apparatus belongs to metallic substance thermal treatment field.
Background technology
Quenching is meant steel part is heated to A
C3Or A
C1The above a certain temperature of point keeps certain hour, then with suitable speed cooling obtain martensite and (or) thermal treatment process of bainite structure.For tissue and the performance that obtains to be scheduled to, method of cooling and equipment many routines, special and combination are used.Classification/isothermal quenching the method that adopts mainly contains martempering and austempering at present.Martempering and austempering adopt salt made from earth containing a comparatively high percentage of sodium chloride as quenchant (martempering also can adopt hierarchical quenching oil as quenchant) mostly, the advantage of nitrate quenching is to reduce the structural stress that phase transformation produces, reduce distortion and rimose tendency, obtain the tissue and the performance of expection.It is bigger because of the difference of the water yield that adds fluctuates that its shortcoming is that the dangerous salt made from earth containing a comparatively high percentage of sodium chloride big, evaporation of production cost height, operation of equipment deficiency serious to topsoil, the medium cooling power has limited accessory size scope, medium cooling power, so this technology is promoted and is restricted.Find by literature search, reduce the structural stress that martensitic transformation produces in order to reach, reduce distortion and rimose tendency, obtain the tissue and the performance of expection, S.W.Han is in " metal heat treatmet " nineteen ninety-five (11), P19～23, write articles " soaking the system of quenching (ITQS) principle and the application in periodic and continous way production during control ", when having proposed control, soaks this article the ITQS of system that quenches (immersion time quenching system), the core of this system is to increase quenching intensity to obtain high rigidity by the quenching initial stage that the direction of control stirring and degree realize, when workpiece temperature during, reduce distortion and the tearing tendency of quenching intensity to reduce workpiece near the Ms point.The ITQS system mainly falls into tube by heated work pieces, the immersion liquid quenching tank, fast cold transport tape, nozzle and slow cooling promote transport tape and constitute, heated work pieces falls into the solution that tube inserts the immersion liquid quenching tank, heated work pieces falls into the feed opening of tube aligning process furnace suitable for reading, end opening is aimed at the initial end position of the last planar horizontal motion of fast cold transport tape, fast cold transport tape is located in the immersion liquid quenching tank, the end of the last planar horizontal motion of fast cold transport tape is located at the top that slow cooling promotes the initial end of planar horizontal motor segment on the transport tape of transport tape, nozzle be arranged on fast cold transport tape around, slow cooling promotes transport tape and is located in the cell body, and constitute by horizontal section and lifting section, horizontal section is located at the below of fast cold transport tape, promote the section part and be immersed in the hardening liquid, part is exposed the quenching liquid level.The working process of ITQS system is that the quenching part is heated to A
C3Or A
C1The above a certain temperature of point keeps certain hour, falls into tube by heated work pieces then and falls on the fast cold transport tape of quenchant, and move with predetermined speed under the strong injection of nozzle; The quenching part falls on the tangential movement section of slow cooling lifting transport tape when the temperature of a certain privileged site of quenching part reaches the starting point temperature (Ms point temperature) that martensitic stucture changes, and with slower speed the quenching part is lifted out liquid level and carries out air cooling.The result shows that there is positive effect in this system for the distortion that reduces workpiece.The successful key of ITQS system quenching is accurately to determine the cooling time of initial cooling stages (ARI), its method is to draw the desired H factor of certain quench-hardened case (being equivalent to quenching intensity) by calculating or experimental measurement, and then look into corresponding table, determine the ARI required time.The difference of ITQS system and traditional real-time quenching (Time quenching) equipment is that time and order that the former changes stirring velocity are by Theoretical Calculation, and through experimental verification, computerizeing control then reappears it in production reality; And the latter adopted is the repetition test method, and its success or not is by operator's decision, and usually is difficult to reappear.Soak the system of quenching (ITQS) during control though reducing aspect the workpiece distortion certain effect is arranged, but, in workpiece temperature only is to reduce the medium cooling intensity by reducing the medium stir speed (S.S.) during near the Ms point, isothermal keeps under near Ms point temperature and can't resemble the martempering, realize reducing to greatest extent the structural stress that phase transformation produces, reduce distortion and rimose tendency, obtain the tissue and the performance purpose of expection.
Summary of the invention
The present invention is directed to control, the time to soak the system of quenching (ITQS) only be to reduce the medium cooling intensity by reduction medium stir speed (S.S.) in quenching part temperature during near Ms point, and can't resemble the martempering situation that isothermal keeps under near Ms point temperature, a kind of continuous staged or isothermal quenching cooling apparatus is proposed, make its cooling intensity adjustable, and have that production cost is low, pollution-free, production process safety and the unrestricted characteristics of quenching part size, be suitable for the single batch spare production of kind.The present invention is achieved by the following technical solutions, the present invention mainly comprises: the immersion liquid quenching tank, heated work pieces falls into tube, infrared thermometer, spray cold transport tape, nozzle, constant-temperature oven transport tape and constant-temperature oven, its mode of connection is: heated work pieces falls into the solution that tube inserts the immersion liquid quenching tank, heated work pieces falls into the feed opening of tube aligning process furnace suitable for reading, the initial end position of the last planar horizontal motion of the fast cold transport tape of end opening aligning immersion liquid quenching tank, nozzle be arranged on the spray cold transport tape around, the initial end of spraying the last planar horizontal motion of cold transport tape is located at the below of the end of the last plane of movement of fast lifting transport tape in the immersion liquid quenching tank, the end that sprays the last planar horizontal motion of cold transport tape is located at the top of the initial end that the last planar horizontal of constant-temperature oven transport tape moves, the major part of constant-temperature oven transport tape is arranged in the heating chamber of constant-temperature oven, only heating chamber is stretched out at two ends, infrared thermometer be located at respectively the immersion liquid quenching tank the fast lifting transport tape last plane of movement end the top and spray top between the last planar horizontal Motor area of cold transport tape.
Immersion liquid quenching tank and the cold transport tape of spray, nozzles combine with the immersion of quenching part and transfer function, by cooling intensity and the transport tape movement velocity of computer control workpiece in the immersion liquid quenching tank is quenched system with spray, realize that the workpiece surface layer is cooled fast to preset temperature in the immersion liquid quenching tank, in cold transport tape of spray and nozzle, keep the heat of taking away workpiece heart portion under the little prerequisite of surface temperature fluctuation subsequently, realize working continuously of marquenching or isothermal quenching.
The immersion liquid quenching tank comprises: cell body, fast cold transport tape, nozzle and fast lifting transport tape, its mode of connection is: fast cold transport tape is located in the cell body, the end of the last planar horizontal motion of fast cold transport tape is located at the top of planar initial end on the transport tape of fast lifting transport tape, nozzle be arranged on fast cold transport tape around, the fast lifting transport tape is located in the cell body, and part is immersed in the hardening liquid, part is exposed the quenching liquid level, the fast lifting transport tape can be transferred to the quenching part on the cold transport tape of spray fast, and the internal heat of the part quenching part in transfer process of avoiding quenching passes to the surface and the temperature on surface is raise and goes beyond the limit.
The ejection medium that is located at the cold transport tape of spray nozzle all around is liquid, gas or gas liquid mixture, and concrete ejection medium and injection intensity can be adjusted according to demand.
The quenching part is heated to A
C3Or A
C1The above a certain temperature of point keeps certain hour, falls into tube by heated work pieces then and falls on the fast cold transport tape of quenchant, and move with predetermined speed under the strong injection of nozzle; The part that quenches subsequently falls on the fast lifting transport tape, and the quenching part is lifted out liquid level with fast speeds, the part that quenches is subsequently fallen spray and is sprayed on the cold transport tape cold, spray cold intensity and should be controlled at and to keep workpiece surface temperature fluctuation not to be advisable very much, fall into the constant-temperature oven transport tape and enter constant-temperature oven insulation or Direct Air-Cooled up to the internal and external temperature of the quenching part back workpiece that reaches unanimity.Above fast lifting transport tape and the cold transport tape of spray, be separately installed with the surface temperature that one or several infrared thermometer is measured the quenching part, and the result fed back to computer, as the foundation of the injection intensity of the movement velocity of regulating fast cold transport tape and the cold transport tape of spray and nozzle and nozzle.Wherein the data measured of the temperature measurer of fast lifting transport tape top are as the foundation of the spraying pressure of the movement velocity of the fast cold transport tape of feedback regulation and nozzle.Temperature measurer above the cold transport tape of spray is used for movement velocity and the spraying pressure of nozzle and the foundation of ejection medium type that feedback control is sprayed cold transport tape.Concrete structure of the present invention can carry out multiple combination according to the product object.
The present invention has substantive distinguishing features and marked improvement, the present invention is on the basis to various quenching refrigerating device analyses and trial, traditional immersion liquid quenching mode combined with the spray quenching mode form the controlled continuous staged or isothermal quenching cooling apparatus of cooling intensity, take to be provided with the skin temperature of the method collection quenching part of infrared thermometer simultaneously, and feedback control process of cooling, by with the comparative analysis of traditional martempering and austempering, the present invention has following characteristics and effect: adopt the quenching part more than the liquid level is carried out temperature monitoring, make computer can in time obtain feedback information, whole technological process is adjusted; Reduced the quenching cost, also solved salt made from earth containing a comparatively high percentage of sodium chloride and oil simultaneously atmospheric pollution and production safety problem; Cooling intensity can be adjusted according to demand, does not therefore have the problem of restriction quenching part size; Solved the problem of the salt made from earth containing a comparatively high percentage of sodium chloride medium cooling power of traditional martempering and austempering employing because of the different considerable influence quality producies that fluctuate of the water yield of adding; The present invention significantly reduces the cost of equipment because of adopting water-based quenching medium.
Description of drawings
Fig. 1 structural representation of the present invention
Embodiment
As shown in Figure 1, the present invention mainly comprises: immersion liquid quenching tank 1, heated work pieces falls into tube 2, infrared thermometer 3, spray cold transport tape 4, nozzle 5, constant-temperature oven transport tape 6 and constant-temperature oven 7, its mode of connection is: heated work pieces falls into tube 2 and inserts immersion liquid quenching tank 1 solution, heated work pieces falls into the feed opening of tube 2 aligning process furnace suitable for reading, the initial end position of the last planar horizontal motion of the fast cold transport tape 9 of end opening aligning immersion liquid quenching tank 1, nozzle 5 be arranged on the spray cold transport tape 4 around, the initial end of spraying the last planar horizontal motion of cold transport tape 4 is located at the below of the end of the last plane of movement of fast lifting transport tape 11 in the immersion liquid quenching tank 1, the end that sprays the last planar horizontal motion of cold transport tape 4 is located at the top of the initial end that the last planar horizontal of constant-temperature oven transport tape 6 moves, the major part of constant-temperature oven transport tape 6 is arranged in the heating chamber of constant-temperature oven 7, only heating chamber is stretched out at two ends, infrared thermometer 3 be located at respectively immersion liquid quenching tank 1 fast lifting transport tape 11 last plane of movement end the top and spray top between the last planar horizontal Motor area of cold transport tape 4.
Immersion liquid quenching tank 1 comprises: cell body 8 and fast cold transport tape 9, nozzle 10 and fast lifting transport tape 11, its mode of connection is: fast cold transport tape 9 is located in the cell body 8, the end of the last planar horizontal motion of fast cold transport tape 9 is located at the top of planar initial end on the transport tape of fast lifting transport tape 11, nozzle 10 be arranged on fast cold transport tape 9 around, fast lifting transport tape 11 is located in the cell body 8, and part is immersed in the hardening liquid, and part is exposed the quenching liquid level.
The ejection medium that is located at the cold transport tape 4 of spray nozzle 5 all around is liquid, gas or gas liquid mixture.
Claims (2)
1, a kind of continuous staged or isothermal quenching cooling apparatus, mainly comprise: immersion liquid quenching tank (1), heated work pieces falls into tube (2), spray cold transport tape (4), nozzle (5), constant-temperature oven transport tape (6) and constant-temperature oven (7), it is characterized in that also comprising: infrared thermometer (3), its mode of connection is: heated work pieces falls into tube (2) and inserts immersion liquid quenching tank (1) solution, heated work pieces falls into the feed opening of tube (2) aligning process furnace suitable for reading, the initial end position of the last planar horizontal motion of the fast cold transport tape (9) of end opening aligning immersion liquid quenching tank (1), nozzle (5) be arranged on the spray cold transport tape (4) around, the initial end of spraying the last planar horizontal motion of cold transport tape (4) is located at the below of the end of the last plane of movement of fast lifting transport tape (11) in the immersion liquid quenching tank (1), the end that sprays the last planar horizontal motion of cold transport tape (4) is located at the top of the initial end that the last planar horizontal of constant-temperature oven transport tape (6) moves, the major part of constant-temperature oven transport tape (6) is arranged in the heating chamber of constant-temperature oven (7), only heating chamber is stretched out at two ends, the fast lifting transport tape (11) that infrared thermometer (3) is located at immersion liquid quenching tank (1) respectively go up plane of movement end the top and spray top between the last planar horizontal Motor area of cold transport tape (4), immersion liquid quenching tank (1) comprising: cell body (8) and fast cold transport tape (9), nozzle (10) and fast lifting transport tape (11), its mode of connection is: fast cold transport tape (9) is located in the cell body (8), the end of the last planar horizontal motion of fast cold transport tape (9) is located at the top of planar initial end on the transport tape of fast lifting transport tape (11), nozzle (10) be arranged on fast cold transport tape (9) around, fast lifting transport tape (11) is located in the cell body (8), and part is immersed in the hardening liquid, and part is exposed the quenching liquid level.
2, this continuous staged or isothermal quenching cooling apparatus according to claim 1 is characterized in that being located at the ejection medium that sprays cold transport tape (4) nozzle (5) all around is liquid, gas or gas liquid mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02137258 CN1232659C (en) | 2002-09-29 | 2002-09-29 | Continuous staged or isothermal quenching cooling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02137258 CN1232659C (en) | 2002-09-29 | 2002-09-29 | Continuous staged or isothermal quenching cooling apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1401795A CN1401795A (en) | 2003-03-12 |
| CN1232659C true CN1232659C (en) | 2005-12-21 |
Family
ID=4748936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02137258 Expired - Fee Related CN1232659C (en) | 2002-09-29 | 2002-09-29 | Continuous staged or isothermal quenching cooling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1232659C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100398671C (en) * | 2005-01-20 | 2008-07-02 | 上海交通大学 | Positioner for quenching workpiece immersion quenching bath |
| CN105002335A (en) * | 2015-08-11 | 2015-10-28 | 无锡乐华自动化科技有限公司 | Spraying type quenching water cooling automatic device |
| CN105063296A (en) * | 2015-08-11 | 2015-11-18 | 无锡乐华自动化科技有限公司 | Water quenching automation equipment |
| CN105969947A (en) * | 2016-05-26 | 2016-09-28 | 安徽省宁国诚信耐磨材料有限公司 | Method of isothermal quenching thermal treatment production line |
| CN106702110B (en) * | 2017-02-27 | 2018-08-07 | 鞍钢集团工程技术有限公司 | A kind of multi-functional quenching experimental device of the two-way hydrojet in top bottom and method |
-
2002
- 2002-09-29 CN CN 02137258 patent/CN1232659C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1401795A (en) | 2003-03-12 |
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| CF01 | Termination of patent right due to non-payment of annual fee |