CN109022720B - Device for improving quenching cooling - Google Patents
Device for improving quenching cooling Download PDFInfo
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- CN109022720B CN109022720B CN201811227416.1A CN201811227416A CN109022720B CN 109022720 B CN109022720 B CN 109022720B CN 201811227416 A CN201811227416 A CN 201811227416A CN 109022720 B CN109022720 B CN 109022720B
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- diversion
- layer
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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
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
- C21D1/64—Quenching devices for bath quenching with circulating liquids
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention provides a device for improving quenching cooling, which aims to solve the technical problems that when a part is quenched and cooled, the difference of the structure is large due to uneven cooling, the part is deformed or cracked due to too fast cooling, and the structure of the part is unqualified due to too slow cooling.
Description
Technical Field
The invention relates to the technical field of metal heat treatment design, in particular to a device for improving quenching cooling.
Background
In the production of a box-type multipurpose furnace, when the parts are quenched and cooled, the uneven cooling causes great tissue difference, which is a problem in the industry, the parts deform or crack due to too fast cooling, and the parts are unqualified due to too slow cooling. Particularly in a box-type multipurpose furnace, the phenomenon is more obvious, because the parts are quenched from top to bottom, and oil is circulated and guided into a quenching tank by adopting a stirrer guide plate, the cooling liquid amount of each section after quenching is different, and the cooling effect of the parts is different. Through adding oil separating device (flow guiding seam) at former equipment bottom, stirring flow guiding mouth department, the quenching liquid reaches the cooling of part more even more effective when quenching through gap control each region to improve the part quality.
Disclosure of Invention
The invention provides a device for improving quenching cooling, which aims to solve the technical problems and comprises a quenching tank and power output equipment connected with the quenching tank, wherein the quenching tank is at least provided with a diversion equipment, the quenching tank comprises a bottom, an open top and a side wall connecting the bottom and the top, and the diversion equipment is connected with the side wall.
Preferably, the flow dividing device comprises a flow dividing layer and a plurality of flow guide slits arranged on the flow dividing layer, and the flow guide slits are arranged in parallel.
Therefore, the diversion seams are channel openings of quenching cooling liquid, quenching cooling enters the quenching tank from the power output equipment and is required to pass through the diversion equipment arranged in the quenching tank and the diversion layer in the diversion equipment, and the diversion layer achieves the effect of controlling the flow rate by limiting the flow of the quenching cooling liquid through the diversion seams, so that the flow rate of the quenching cooling liquid in the quenching area at the other side of the diversion layer is uniform, the heat taken away by the surface of the workpiece is averaged, and the heat treatment effect of the workpiece is improved.
Preferably, the diversion layer comprises a first diversion layer and a second diversion layer, the second diversion layer is arranged between the first diversion layer and the bottom, the intervals of a plurality of diversion seams on the first diversion layer are the same, and the intervals of a plurality of diversion seams on the second diversion layer are sequentially increased from the middle to two sides.
Preferably, the power output apparatus comprises a stirring motor and a deflector, wherein the deflector comprises an inlet connected with the stirring motor and an outlet connected with the quenching tank, and the outlet is connected with the bottom.
Preferably, the number of the power output devices is one and the power output devices are arranged on one side of the quenching tank, the outlets of the guide plates are arranged at the geometric center of the bottom, and the area of the outlets is greater than or equal to two thirds of the area of the bottom.
Preferably, the flow dividing device is connected to two surfaces of the side wall, and a gap is provided between the flow dividing device and the other two surfaces.
Preferably, the shunt layer is parallel to the bottom.
In a preferred aspect of the present invention, the intervals between the plurality of flow guide slits on the second flow dividing layer are sequentially increased in an arithmetic progression from the middle to the two sides.
Preferably, the number of the power output devices is two, the power output devices are symmetrically arranged on two sides of the quenching tank, and the outlets of the guide plates are symmetrically arranged on two sides of the geometric center of the bottom.
Thus, the symmetrical arrangement of the outlets on both sides of the geometric center of the bottom may mean that the outlets are symmetrically distributed about any opposite center line of the bottom, or that the outlets are centrosymmetrically distributed about the geometric center point of the bottom, so as to ensure that two parts with the same volume achieve flow rate averaging when the quenching liquid enters the quenching tank, and that the flow rate is larger and faster than that of only one power output device, but the flow rate stability is relatively poorer than that of one power output device.
The invention has the following beneficial effects:
compared with the prior art, the invention has strong applicability and great development prospect, and the oil flow dividing device (flow guide seam) is added at the bottom of the original equipment and at the stirring flow guide opening, so that the quenching liquid flow in each area is controlled according to the seam, the cooling of the part is more uniform and effective during quenching, and the quality of the part is improved.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a mechanism according to another embodiment of the present invention;
in the figure, a 1-quenching tank, a 11-bottom, a 12-top, a 13-side wall, a 2-power output device, a 21-stirring motor, a 22-deflector, a 3-diversion device, a 31-diversion layer, a 311-first diversion layer, a 312-second diversion layer and a 32-diversion slit are arranged.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, an apparatus for improving quenching cooling comprises a quenching tank 1 and a power output device 2 connected with the quenching tank 1, wherein the quenching tank 1 is at least provided with a diversion device 3, the quenching tank 1 comprises a bottom 11, an open top 12 and a side wall 13 connecting the bottom 11 and the top 12, and the diversion device 3 is connected with the side wall 13.
In this embodiment, the splitting device 3 includes a splitting layer 31 and a plurality of flow guide slits 32 formed on the splitting layer 31, where the plurality of flow guide slits 32 are disposed parallel to each other, the flow guide slits 32 are passage openings of quenching cooling liquid, quenching cooling enters the quenching tank 1 from the power output device 2, and the quenching cooling must pass through the splitting device 3 disposed in the quenching tank 1 and the splitting layer 31 in the splitting device 3, and the splitting layer 31 achieves the effect of controlling the flow velocity by limiting the flow of the quenching cooling liquid through the plurality of flow guide slits 32, so that the flow velocity of the quenching cooling liquid in the quenching area at the other side of the splitting layer 31 is uniform, thereby averaging the heat taken away by the surface of the workpiece, and improving the heat treatment effect of the workpiece.
In this embodiment, the diversion layer 31 includes a first diversion layer 311 and a second diversion layer 312, the second diversion layer 312 is disposed between the first diversion layer 311 and the bottom 11, the intervals of the plurality of diversion slits 32 on the first diversion layer 311 are the same, the intervals of the plurality of diversion slits 32 on the second diversion layer 312 are sequentially increased from the middle to two sides, the power output apparatus 2 includes a stirring motor 21 and a diversion plate 22, the diversion plate 22 includes an inlet connected with the stirring motor 21 and an outlet connected with the quenching tank 1, and the outlet is connected with the bottom 11.
In this embodiment, the connection between the power output apparatus 2 and the baffle 22 and the quenching tank 11 includes, but is not limited to,
as shown in fig. 1, the number of the power output apparatuses 2 is one and is disposed at one side of the quenching tank 1, the outlets of the baffle 22 are disposed at the geometric center of the bottom 11 and the area of the outlets is greater than or equal to two thirds of the area of the bottom 11.
As shown in fig. 2, the number of the power output devices 2 is two and symmetrically arranged at two sides of the quenching tank 1, the outlets of the flow guide plates 22 are symmetrically arranged at two sides of the geometric center of the bottom 11, where the symmetrical arrangement of the outlets at two sides of the geometric center of the bottom 11 may indicate that the outlets are symmetrically distributed about any opposite center line of the bottom 11, or may indicate that the outlets are centrally symmetrical about the geometric center point of the bottom 11, so as to ensure that two parts with the same volume achieve flow rate averaging when the quenching liquid enters the quenching tank 1, and the flow rate is larger and faster than that of only one power output device 2, but the stability of the flow rate is relatively poorer than that of the power output device 2.
In this embodiment, the splitting apparatus 3 is connected to two of the sides of the side wall 13, and a gap is provided between the two other sides, the splitting layer 31 is parallel to the bottom 11, and the intervals between the plurality of flow guiding slits 32 on the second splitting layer 312 are sequentially increased from the middle to two sides in an equal differential number.
The invention aims to solve the problems of inconsistent cooling structure and deformation of the bearing ring, and the scheme can effectively solve the problems of inconsistent structure caused by uneven cooling in the cooling process of heat treatment and improve the problem of product deformation.
The specific scheme is as follows:
1. when stirring the box-type multipurpose furnace, measuring and calculating the flow velocity and flow of quenching liquid at each position of the guide plate;
2. according to the flow and the flow velocity of the step 1, designing and simulating a gap of a first layer oil separating device (a diversion gap), and measuring and calculating the flow velocity and the flow velocity of quenching liquid at the gap;
3. according to the flow speed and the flow quantity of the step 2, the distance between the gap of the second oil diversion device (diversion gap) and the gap of the first gap is designed, so that the flow speed, the flow quantity and the pressure of the quenching liquid flowing out of the second oil diversion device (diversion gap) are ensured, and the heat quantity taken away by each planar area part is always taken away during quenching, thereby improving the cooling uniformity in the quenching process.
When the multi-purpose furnace original heat treatment process is adopted for production, the product is subjected to sampling inspection on hardness and metallographic structure; according to the result of the selective examination, the hardness of the upper layer and the lower layer of the product at the same plane has certain dispersion difference, the hardness dispersion difference is within 1HRC, the troostite between the upper layer and the lower layer is detected by the tissue, and the lower layer is better than the upper layer, and the hardness of the upper layer and the lower layer also have certain difference at the same plane.
When the production is carried out after the diversion seams are added, the product is also subjected to sampling inspection on hardness and metallographic structure; the extraction method is the same as the last time, and the hardness uniformity and the tissue of the product are obviously improved through detection.
The above examples are only illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical scheme of the present invention will fall within the protection scope of the present invention without departing from the design concept of the present invention, and the technical content of the present invention is fully described in the claims.
Claims (6)
1. An apparatus for improving quenching cooling, characterized in that: the quenching device comprises a quenching tank (1) and a power output device (2) connected with the quenching tank (1), wherein the quenching tank (1) is at least provided with a diversion device (3), the quenching tank (1) comprises a bottom (11), an open top (12) and a side wall (13) connecting the bottom (11) and the top (12), and the diversion device (3) is connected with the side wall (13);
the diversion equipment (3) comprises a diversion layer (31) and a plurality of diversion slits (32) arranged on the diversion layer (31), wherein the diversion slits (32) are mutually parallel;
the flow distribution layer (31) comprises a first flow distribution layer (311) and a second flow distribution layer (312), the second flow distribution layer (312) is arranged between the first flow distribution layer (311) and the bottom (11), the intervals of a plurality of flow guide slits (32) on the first flow distribution layer (311) are the same, and the intervals of a plurality of flow guide slits (32) on the second flow distribution layer (312) are sequentially increased from the middle to two sides;
the shunt device (3) is connected with two surfaces of the side wall (13), and a gap is arranged between the shunt device and the other two surfaces.
2. An apparatus for improving quench cooling as set forth in claim 1 wherein: the power output device (2) comprises a stirring motor (21) and a guide plate (22), wherein the guide plate (22) comprises an inlet connected with the stirring motor (21) and an outlet connected with the quenching tank (1), and the outlet is connected with the bottom (11).
3. An apparatus for improving quench cooling as set forth in claim 2 wherein: the number of the power output devices (2) is one and the power output devices are arranged on one side of the quenching tank (1), the outlets of the guide plates (22) are arranged at the geometric center of the bottom (11), and the area of the outlets is larger than or equal to two thirds of the area of the bottom (11).
4. An apparatus for improving quench cooling as set forth in claim 1 wherein: the shunt layer (31) is parallel to the bottom (11).
5. An apparatus for improving quench cooling as set forth in claim 1 wherein: the intervals among the plurality of flow guide slits (32) on the second flow dividing layer (312) are sequentially increased in an equi-differential array from the middle to the two sides.
6. An apparatus for improving quench cooling as set forth in claim 2 wherein: the number of the power output devices (2) is two, the power output devices are symmetrically arranged on two sides of the quenching tank (1), and the outlets of the guide plates (22) are symmetrically arranged on two sides of the geometric center of the bottom (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227416.1A CN109022720B (en) | 2018-10-22 | 2018-10-22 | Device for improving quenching cooling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227416.1A CN109022720B (en) | 2018-10-22 | 2018-10-22 | Device for improving quenching cooling |
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| Publication Number | Publication Date |
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| CN109022720A CN109022720A (en) | 2018-12-18 |
| CN109022720B true CN109022720B (en) | 2023-06-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110760651A (en) * | 2019-11-05 | 2020-02-07 | 浙江辛子精工机械有限公司 | Improve moulding-die quenching plastic equipment that bearing ring warp |
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| CN103217052A (en) * | 2013-04-22 | 2013-07-24 | 陆群英 | Fluid distributor |
| CN105709664A (en) * | 2016-04-13 | 2016-06-29 | 山东理工大学 | Double-reaction-chamber mechanical adjustment type intake gas flow equalizing system of preheating catalytic oxidation device |
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| CN201770732U (en) * | 2010-08-04 | 2011-03-23 | 唐山天捷机械有限公司 | Oil-quenching tank guide device |
| CN202072728U (en) * | 2011-04-30 | 2011-12-14 | 西北矿冶研究院 | Special quenching tank for large-diameter drill bit |
| EP2813584A1 (en) * | 2013-06-11 | 2014-12-17 | Linde Aktiengesellschaft | System and method for quenching a heated metallic object |
| CN204138710U (en) * | 2014-10-24 | 2015-02-04 | 无锡市派克重型铸锻有限公司 | Aluminum alloy quenching groove water circulation system |
| JP6476535B2 (en) * | 2015-05-01 | 2019-03-06 | 株式会社不二越 | Hardening apparatus and method |
| CN205241743U (en) * | 2015-12-25 | 2016-05-18 | 深圳市全德力金属处理科技有限公司 | High -efficient thermal treatment guenching unit |
| CN106498145B (en) * | 2016-12-14 | 2018-02-23 | 重庆长江工业炉制造有限公司 | Automobile front axle cooling recirculation system |
| CN206887163U (en) * | 2017-05-18 | 2018-01-16 | 广州市机电工业研究所 | A kind of flow quenching cooling device |
| CN207567288U (en) * | 2017-11-06 | 2018-07-03 | 广东赛福铝材设备有限公司 | A kind of aluminium profile quenching device |
| CN107928595B (en) * | 2017-12-25 | 2023-09-19 | 常德市鼎城区精晟模具有限公司 | Washing and air drying integrated dish washer |
| CN209260150U (en) * | 2018-10-22 | 2019-08-16 | 浙江辛子精工机械股份有限公司 | It is a kind of to improve the cooling device of quenching |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103217052A (en) * | 2013-04-22 | 2013-07-24 | 陆群英 | Fluid distributor |
| CN105709664A (en) * | 2016-04-13 | 2016-06-29 | 山东理工大学 | Double-reaction-chamber mechanical adjustment type intake gas flow equalizing system of preheating catalytic oxidation device |
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