CN203451570U - Special cooling device for double-medium quenching heat treatment - Google Patents
Special cooling device for double-medium quenching heat treatment Download PDFInfo
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- CN203451570U CN203451570U CN201320474282.XU CN201320474282U CN203451570U CN 203451570 U CN203451570 U CN 203451570U CN 201320474282 U CN201320474282 U CN 201320474282U CN 203451570 U CN203451570 U CN 203451570U
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Abstract
The utility model relates to a special cooling device for double-medium quenching heat treatment. The device comprises support legs, a sliding plate, a separating plate, a box plate, an angle iron frame, a roller seat, a pull rope, a guide rail, a guide roller, a net basket, a rope roller, a stepping motor and a control cabinet, wherein the box plate and the angle iron frame are welded into a quenching groove which is supported by the support legs; the separating plate is welded in the quenching groove; the quenching groove is divided into a water tank and an oil tank by the separating plate, and the lower part of the water tank is communicated with the lower part of the oil tank; the sliding plate is welded at the lower part of the water tank and is arranged in an inclined way; after a steel piece is heated and heat preservation is carried out on the steel piece, the formed austenite is put into the water tank and then enters the net basket through the sliding plate; under the control of the control cabinet, the net basket together with the steel piece arranged in the net basket is moved into the oil from the water by a lifting mechanism, so that a water quenching and oil cooling double-medium quenching technology can be realized. After the special cooling device is adopted, quenching deformation and cracking of the steel piece can be effectively avoided; the special cooling device is high in degree of automation and low in labor intensity, and saline water-oil double-medium quenching and saline water-oil-air three-medium quenching can be realized by the device, so that the device has a wide market prospect.
Description
Technical field
The utility model belongs to metal heat treatmet field, is specifically related to the cooling specific equipment of a kind of interrupted quenching thermal treatment, for the quench cooled of the steel parts such as thin-walled, complex construction, can effectively avoid its quenching strain and cracking.
Background technology
The quenching of steel is that steel is heated to more than critical temperature a certain temperature under solid-state, insulation for some time forms austenite, then in dip quench medium, to be greater than the Cooling Mode of critical velocity, do not allow its that high temperature transformation occurs, and martensitic thermal treatment process is changed in low-temperature transformation district below Ms into.
Quenching can improve hardness and the wear resistance of steel part, thereby is widely used in various tool, measurer, mould and requires the part of surface abrasion resistance as the thermal treatment of gear, roll, carburized parts etc.
After quenching, carry out the tempering of differing temps, can increase substantially intensity, toughness and the fatigue strength of steel part, and the cooperation that can obtain between these performances makes it have good comprehensive mechanical property, to meet different use properties requirements.In addition, quench and also can make the steel of some properties obtain certain physicals and chemical property, as quenching makes Permanent Magnet Steel strengthen its ferromegnetism, some stainless steel improves its solidity to corrosion etc.
Quick cooling meeting during quenching makes steel part top layer and heart portion speed of cooling occur difference, top layer cold fast, that heart portion is cold is slow, according to the principle of expanding with heat and contracting with cold in physics, first shrink on fast cooling top layer, cooling slow heart portion post shrinkage; But top layer and heart portion are again an integral body, must influence each other.Reactive force between this inside workpiece that shrinks when different, mutually restricts and cause is exactly thermal stresses.
Equally, fast cooling top layer, temperature first arrives below Ms, and martensitic transformation occurs, and occurs martensite duricrust; Subsequently, heart portion also drops to below Ms, occurs martensitic transformation, from face-centered cubic lattice, becomes body centered structure, and volumetric expansion is subject to the restriction of outer duricrust, produces interaction force.When this because structural transformation is different, mutually restrict and reactive force between the inside workpiece that produces, it is exactly structural stress.
When the different sites of steel part has difference in thickness, when speed of cooling also can be different, also there will be thermal stresses and structural stress.
When the thermal stresses of steel part inside and the two stack of structural stress are greatly to a certain extent time, steel part just there will be distortion even to ftracture.Therefore, the distortion in the time of avoiding steel part quench cooled and cracking, from quench cooled angle, just should reduce speed of cooling, thereby reduce thermal stresses and structural stress.But for avoiding steel part high temperature transformation to produce the tissue of perlite type, steel part must guarantee certain speed of cooling again in high-temperature zone.This just requires steel part cooling fast in high-temperature zone, cooling slow in cold zone.But, often make steel part also poor in the little quenchant ， high temperature transformation district speed of cooling of low-temperature martensite limited proportionality speed of cooling, may make steel part occur high temperature transformation, can not make steel part harden; Make steel part at the large quenchant of high temperature transformation district speed of cooling, in low-temperature martensite limited proportionality, speed of cooling is also large, may make steel part distortion and cracking.Therefore,, when cooling in Single Medium, require steel part guaranteeing that under the prerequisite of hardening, quench cooling rate is the smaller the better.
The subcooling ability of oil is less, can avoid quenching strain and the cracking of general steel part, but high temperature cooling ability also a little less than, can not make carbon-steel parts avoid high temperature transformation, so be applicable to the quenching of alloy steel piece; The high temperature cooling ability of water is stronger, can make carbon-steel parts avoid high temperature transformation, but low-temperature transformation district cooling power is also strong, and steel part easily produces quenching strain and cracking; The cooling power of salt solution is stronger, is applicable to the quenching of larger carbon-steel parts.
By cooling in Single Medium after steel part heating and thermal insulation, be called single medium quenching.This method is simple to operate, is widely used.But, when steel part is cooling in water or in salt solution, easily produce distortion and cracking.
For some complex-shaped steel part, in the strong medium of water or other cooling poweies of first quenching after heating and thermal insulation, be cooled to the temperature of a little higher than Ms, proceed to rapidly more cooling in the weak medium of oil or other cooling poweies in, be called interrupted quenching, conventional is water quenching and oil-cooling.In the strong medium of cooling power, workpiece high temperature section fast cooling avoid steel in supercooled austenite generation high temperature transformation; Low-temperature zone proceeds in the weak medium of cooling power, speed of cooling diminishes, the top layer of steel part and heart portion or thin and thick two portions temperature difference are reduced, the thermal stresses producing reduces, the asynchronism of structural transformation reduces, structural stress reduces, and has effectively reduced the internal stress of steel part, has reduced steel part distortion and tearing tendency.
The key of interrupted quenching technique is how to control the residence time of steel part in water.Water outlet is too early, there will be subsequently high temperature transformation, can not make steel part harden; Water outlet is excessively late, will low-temperature transformation occur in water, does not reach the object of interrupted quenching.
The operation of traditional interrupted quenching technique is, the steel part of holding pliers clamping austenitizing enters after water, sees bubble, listening, by micro-judgment water outlet opportunity, then proceeds in oil cooling.Ye You enterprise is formula t=kd rule of thumb, by thickness of workpiece d, calculate the time stop in water, coefficient k for O.2～O.3s/mm, carbon steel capping, steel alloy removes the limit.This technique is applicable to the processing of the relatively large part of medium-sized part carbon steel manufacture, that diameter is 10～40mm and low alloy steel manufacture.But, still adopting the time of Artificial Control steel part in water, and proceed to the process in oil, operation easier is large, and error is larger, and success ratio is lower.
Summary of the invention
The utility model, for solving the problems of the prior art, provides a kind of interrupted quenching thermal treatment cooling specific equipment, and it can effectively avoid distortion and the cracking of thin-walled, complex construction steel part; Level of automation is high, and labour intensity is little.
The utility model is achieved by the following technical solutions:
The cooling specific equipment of interrupted quenching thermal treatment, this equipment comprises supporting leg, slide plate, division board, boxboard, slotted-angle shelving, roller seat, stay cord, guide rail, deflector roll, oil, water, basket, serving roller, stepper-motor, housing.
Described boxboard, the slotted-angle shelving quenching tank that is welded, and supported by supporting leg, in described quenching tank, being welded with division board, it is that tank, right side are oil groove that described division board is divided into left side by quenching tank, described tank and oil groove bottom communicate, and are added with respectively water and oil.
The bottom of described tank is welded with slide plate, described slide plate slant setting, and below and vertical portion lower end that the lower end of slide plate is positioned at dividing plate are welded in quench cooled trough floor, and the upper end of slide plate is welded on the quenching tank cell wall in left side.
The upper lower edge of the front and back side of described oil groove is all provided with roller seat and deflector roll; Before and after described oil groove, on inwall, be also provided with guide rail, the below of described oil groove base plate is provided with serving roller, and serving roller is connected with stay cord, and stay cord is connected with basket after deflector roll commutation, and basket is in oil groove; Basket can move up and down along guide rail under stay cord and action of gravity; Described housing is connected with stepper-motor, and stepper-motor is connected with serving roller.Described housing control step motor and coupled serving roller rotate, and stay cord draws high or loosens basket through deflector roll, realizes moving up and down of steel part.
The master control set of described housing is one chip microcomputer, and described housing, stepper-motor, serving roller, basket, deflector roll, stay cord form automatic lifting system.
Pitch angle between the sloping portion of described slide plate and quench cooled trough floor is preferably 30 °～60 °.
The add-on of described oil is advisable over 3 times of steel part height in basket above with oil reservoir height; The add-on of water, should make the water surface of oil groove bottom exceed the base certain altitude of division board, and in quench cooled process, the motion of steel part, can not make oil enter tank one side and be advisable.
Master control set in described housing is one chip microcomputer, can set the residence time and the mode of motion of different steps, the different translational speeds, mode of motion and the transient process that realize steel part in water and in oil, can adapt to the quench cooled of unlike material, different thickness, different shapes and different size steel part.The mode of motion of steel part in a certain medium can be set as geneva motion, move continuously, pump etc., select appropriate mode of motion, can improve speed of cooling and the cooling uniformity of steel part in medium, be conducive to avoid distortion and the cracking of steel part.When selected steel part goes out oil surface temperature when higher, can realize water-oil-empty three medium quenchings, while injecting salt solution in tank, can realize salt solution and oily interrupted quenching, also can realize easily salt solution-oil-air three medium quenchings.。
The utility model compared with prior art, has following significant advantage:
The cooling specific equipment of a kind of interrupted quenching thermal treatment and technique thereof that the utility model provides, the automatic equipment that has adopted one chip microcomputer commander, step-by-step motor to drive, the residence time, mode of motion and the transient process etc. of steel part in each medium can be changed easily, the quench cooled of unlike material, different thickness, different shapes, different size steel part can be adapted to; The mode of motion of steel part in a certain medium can be set as geneva motion, move continuously, pump etc., and appropriate mode of motion can improve speed of cooling and the cooling uniformity of steel part in medium, is conducive to avoid distortion and the cracking of steel part.
The cooling specific equipment of a kind of interrupted quenching thermal treatment that the utility model provides, ingenious utilized water and oily natural layering and water lower and oily in upper feature, the dual-slot structure that utilizes bottom to be communicated with, can make steel part move past in journey upper, realizes water quenching and oil-cooling interrupted quenching technique.Transient process between different media is simple, steady, does not need manual operations, and equipment completes automatically.
The cooling specific equipment of a kind of interrupted quenching thermal treatment that the utility model provides, by changing the medium in two grooves, can realize salt water quenching and oil-cooling interrupted quenching technique easily.Also can realize easily water-oil-air three medium quenching techniques or salt solution-oil-air three medium quenching techniques.
In a word, the utility model can guarantee that steel part is under the front topic of hardening, and effectively avoids distortion and cracking; Level of automation is high, and labour intensity is little, has wide market outlook.
Accompanying drawing explanation
Fig. 1 is the cooling specific equipment structural representation of the utility model interrupted quenching thermal treatment;
Fig. 2 is A-A view in Fig. 1 and lower part vertical view in Fig. 1;
Fig. 3 is left view and the part sectioned view thereof of Fig. 1;
Fig. 4 is the jacking system schematic diagram in the cooling specific equipment of the utility model interrupted quenching thermal treatment;
Fig. 5 is the right view of Fig. 4.
Embodiment
With reference to the accompanying drawings the utility model embodiment is elaborated.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5.
The cooling specific equipment of interrupted quenching thermal treatment, this equipment comprises supporting leg 1, slide plate 2, division board 3, boxboard 4, slotted-angle shelving 5, roller seat 6, stay cord 7, guide rail 8, deflector roll 9, oil 10, water 11, basket 12, serving roller 13, stepper-motor 14, housing 15.
Described boxboard 4, slotted-angle shelving 5 quenching tank that is welded, and supported by supporting leg 1, in described quenching tank, be welded with division board 3, it is that tank, right side are oil groove that described division board 3 is divided into left side by quenching tank, described tank and oil groove bottom communicate, and are added with respectively water 11 and oil 10.
The bottom of described tank is welded with slide plate 2, described slide plate 2 slant settings, and below and vertical portion lower end that the lower end of slide plate 2 is positioned at dividing plate 3 are welded in quench cooled trough floor, and the upper end of slide plate 2 is welded on the quenching tank cell wall in left side.
The upper lower edge of the front and back side of described oil groove is all provided with roller seat 6 and deflector roll 9; Before and after described oil groove, on inwall, be also provided with guide rail 8, the below of described oil groove is provided with serving roller 13, and serving roller 13 is connected with stay cord 7, and stay cord 7 is connected with basket 12 after deflector roll 9 commutations, and basket 12 is in oil groove; Basket 12 can move up and down along guide rail 8 under stay cord 7 and action of gravity; Described housing 15 is connected with stepper-motor 14, and stepper-motor 14 is connected with serving roller 13.Described housing 15 control step motors 14 and coupled serving roller 13 rotate, and stay cord 7 draws high or loosens basket 12 through deflector roll 9, realizes moving up and down of steel part.
The master control set of described housing 15 is one chip microcomputers, and described housing 15, stepper-motor 14, serving roller 13, basket 12, deflector roll 9, stay cord 7 form automatic lifting system.
Pitch angle between the sloping portion of described slide plate 2 and quench cooled trough floor is preferably 30 °～60 °.
Adding of described quenching tank medium need to operate in order, first in tank, adds water 11 or salt solution, then in oil groove, adds oil 10.The add-on of water or salt solution is more than oil, and the add-on of oil surpasses steel part height in basket with oil reservoir height and more than 3 is doubly advisable; The add-on of water, should make the water surface of oil groove bottom exceed the base certain altitude of division board 3, and in quench cooled process, the motion of steel part, can not make oil enter tank one side and be advisable.
Quenching technology: the steel part that wish is quenched, after heating and thermal insulation forms austenite, drop in tank, under action of gravity, through slide plate 2, automatically enter basket 12; Under the time variable control setting at housing 15, the steel part of basket 12 and the inside moves on in oil 10 from water 11, realizes water quenching and oil-cooling interrupted quenching process.
The residence time of steel part in water, formula t=kd rule of thumb, by thickness of workpiece, d calculates, thickness of workpiece d is when 30mm is following, and coefficient k is 0.21～0.35s/mm, when thickness of workpiece d is greater than 30mm, coefficient k is 0.35～0.75s/mm, carbon steel capping, and steel alloy removes the limit; For the mould complex-shaped, deformation requirements is high, sometimes adopt extraordinary cooling provision, coefficient k is taken as 0.11～0.21s/mm.With reference to thermal treatment experience in the past, be set in water and oil in mode of motion, parameter is sent into the one chip microcomputer in housing 15.For the steel part of successfully having processed, one chip microcomputer is recorded the parameters such as time and mode of motion automatically, in order to calling next time.
The utility model working process is:
By supporting leg 1, slide plate 2, division board 3, boxboard 4, slotted-angle shelving 5, be welded and tank and oil groove that bottom is communicated with in, injected water 11 and oil 10 respectively;
Connect device power supply (DPS), housing 15 and stepper-motor 14 are in running order, and make basket 12 in bottom position; In the one chip microcomputer of housing 15, the parameters such as the material (carbon steel or steel alloy) of input steel part, overall dimension, maximum ga(u)ge are also set mode of motion; Or recall the data of storage, and check steel part that one chip microcomputer provides time and the mode of motion in water and in oil, after information is errorless, by start button, make whole jacking system in waiting status;
The steel part that wish is quenched, after heating and thermal insulation forms austenite, drops in tank, presses the start button on housing 15 simultaneously, 2 seconds of one chip microcomputer automatic time delay, guarantee steel part under action of gravity because slide plate 2 enters basket 12 automatically; Subsequently, jacking system moves according to program, enters in oil in water, realizes interrupted quenching technique.
Fig. 4, Fig. 5 have represented the hoisting appliance in the cooling specific equipment of interrupted quenching thermal treatment, and the one chip microcomputer in housing 15 sends pulse command, and through power magnification, Driving Stepping Motor 14 rotates.When stepper-motor 14 rotates counterclockwise, coupled serving roller 13 synchronously rotates, and stay cord 7 draws high basket 12 through deflector roll 9, realizes steel part and moves up; When stepper-motor 14 clockwise rotates, coupled serving roller 13 synchronously rotates, and stay cord 7 loosens basket 12 through deflector roll 9, realizes steel part and move down under action of gravity.
Claims (4)
1. the cooling specific equipment of interrupted quenching thermal treatment, it is characterized in that, this equipment comprises supporting leg (1), slide plate (2), division board (3), boxboard (4), slotted-angle shelving (5), roller seat (6), stay cord (7), guide rail (8), deflector roll (9), oil (10), water (11), basket (12), serving roller (13), stepper-motor (14), housing (15);
Described boxboard (4), slotted-angle shelving (5) quenching tank that is welded, and supported by supporting leg (1), in described quenching tank, be welded with division board (3), it is that tank, right side are oil groove that described division board (3) is divided into left side by quenching tank, described tank and oil groove bottom communicate, and are added with water respectively (11) and oily (10);
The bottom of described tank is welded with slide plate (2), described slide plate (2) slant setting, below and vertical portion lower end that the lower end of slide plate (2) is positioned at dividing plate (3) are welded in quench cooled trough floor, and the upper end of slide plate (2) is welded on the quenching tank cell wall in left side;
The upper lower edge of the front and back side of described oil groove is all provided with roller seat (6) and deflector roll (9); Before and after described oil groove, on inwall, be also provided with guide rail (8), the below of described oil groove base plate is provided with serving roller (13), serving roller (13) is connected with stay cord (7), and stay cord (7) is connected with basket (12) after deflector roll (9) commutation, and basket (12) is in oil groove; Described housing (15) is connected with stepper-motor (14), and stepper-motor (14) is connected with serving roller (13).
2. the cooling specific equipment of a kind of interrupted quenching thermal treatment as described in right 1, it is characterized in that, the master control set of described housing (15) is one chip microcomputer, and described housing (15), stepper-motor (14), serving roller (13), basket (12), deflector roll (9), stay cord (7) form automatic lifting system.
3. the cooling specific equipment of a kind of interrupted quenching thermal treatment as described in right 1, is characterized in that, the sloping portion of described slide plate (2) and the pitch angle between quench cooled trough floor are 30 °～60 °.
4. the cooling specific equipment of a kind of interrupted quenching thermal treatment as described in right 1, is characterized in that, the add-on of described oil (10) surpasses in basket steel part height more than 3 times with oil reservoir height; The add-on of water (11), makes the water surface of oil groove bottom exceed the base of division board (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474282.XU CN203451570U (en) | 2013-08-05 | 2013-08-05 | Special cooling device for double-medium quenching heat treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474282.XU CN203451570U (en) | 2013-08-05 | 2013-08-05 | Special cooling device for double-medium quenching heat treatment |
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| CN203451570U true CN203451570U (en) | 2014-02-26 |
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| CN201320474282.XU Withdrawn - After Issue CN203451570U (en) | 2013-08-05 | 2013-08-05 | Special cooling device for double-medium quenching heat treatment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436671A (en) * | 2013-08-05 | 2013-12-11 | 河北科技大学 | Special equipment for two-medium quenching heat treatment and cooling and technology of equipment |
| CN104060060A (en) * | 2014-06-30 | 2014-09-24 | 江阴东邦钢球机械有限公司 | Heat treatment cooling device |
| CN109750143A (en) * | 2019-02-25 | 2019-05-14 | 安徽瑞达机械有限公司 | A kind of small-sized handware interrupted quenching device |
| CN110317933A (en) * | 2019-07-27 | 2019-10-11 | 沛县祥龙矿山机械配件有限公司 | A kind of thermal power generation steel ball thermal treatment and quenching combined device |
| CN113265530A (en) * | 2021-06-24 | 2021-08-17 | 重庆文理学院 | Tubular part quenching and cooling equipment utilizing thermoelectricity |
-
2013
- 2013-08-05 CN CN201320474282.XU patent/CN203451570U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436671A (en) * | 2013-08-05 | 2013-12-11 | 河北科技大学 | Special equipment for two-medium quenching heat treatment and cooling and technology of equipment |
| CN103436671B (en) * | 2013-08-05 | 2015-07-01 | 河北科技大学 | Special equipment for two-medium quenching heat treatment and cooling and technology of equipment |
| CN104060060A (en) * | 2014-06-30 | 2014-09-24 | 江阴东邦钢球机械有限公司 | Heat treatment cooling device |
| CN104060060B (en) * | 2014-06-30 | 2016-03-30 | 江阴东邦钢球机械有限公司 | Heat treated refrigerating unit |
| CN109750143A (en) * | 2019-02-25 | 2019-05-14 | 安徽瑞达机械有限公司 | A kind of small-sized handware interrupted quenching device |
| CN110317933A (en) * | 2019-07-27 | 2019-10-11 | 沛县祥龙矿山机械配件有限公司 | A kind of thermal power generation steel ball thermal treatment and quenching combined device |
| CN113265530A (en) * | 2021-06-24 | 2021-08-17 | 重庆文理学院 | Tubular part quenching and cooling equipment utilizing thermoelectricity |
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Granted publication date: 20140226 Effective date of abandoning: 20150701 |
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