CN215713152U - Cooling water jacket for rapid cooling type quenching furnace - Google Patents
Cooling water jacket for rapid cooling type quenching furnace Download PDFInfo
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- CN215713152U CN215713152U CN202121979328.4U CN202121979328U CN215713152U CN 215713152 U CN215713152 U CN 215713152U CN 202121979328 U CN202121979328 U CN 202121979328U CN 215713152 U CN215713152 U CN 215713152U
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Abstract
The utility model relates to the technical field of metal hot working equipment, in particular to a cooling water jacket for a rapid cooling quenching furnace. The utility model aims to provide a cooling water jacket for a rapid cooling quenching furnace, which improves the heat exchange area of the cooling water jacket through the technology of inserting objects in the jacket and the like, also improves the heat exchange coefficient through a radiating fin, improves the quenching hardness of a workpiece, reduces the water flow to reduce the quenching hardness and simultaneously reduces the production cost when the quenching hardness required by the workpiece is lower, and solves the problems that the existing quenching furnace cannot meet the quenching hardness required by the workpiece, so that the hardness of the workpiece is insufficient, and the later stage needs an additional electroplating process to further increase the production cost.
Description
Technical Field
The utility model relates to the technical field of metal hot working equipment, in particular to a cooling water jacket for a rapid cooling quenching furnace.
Background
Quenching is the heating of a metal workpiece to a certain temperature and then suddenly cooling it in water, oil or cold air to increase the hardness.
In order to produce a metal workpiece with higher hardness, the metal workpiece is often quenched in a quenching furnace at the later stage of the heat treatment process to improve the properties of the product, such as hardness and surface effect. In a traditional quenching furnace, a cooling link is added at an outlet of a heating furnace, and the heating furnace is usually connected with a cooling mechanism for rapid cooling.
Water is a conventional refrigerant, and as a cooling agent for the quenching process, the heat conductivity coefficient of the water is about 0.59W/(m.K) at normal temperature, so that the water meets the cooling requirements of most metal materials, and the use cost is low, so that the water is favored by most manufacturers. The traditional quenching cooling mechanism utilizes a cooling tower (or a water tank and the like) to carry out cooling circulation and directly guide cooling water into a cooling water jacket of a cooling section, thereby achieving the purpose of quenching. Along with the demand of stainless steel is higher and higher, in order to make it satisfy the demand, the hardness requirement of stainless steel work piece is also higher and higher, because the coefficient of heat conductivity of traditional quenching furnace cooling water is limited, even continue under the condition that increases cooling water flow, the quenching hardness that the quenching speed also can't satisfy higher demand leads to the work piece hardness not enough, later stage needs extra electroplating process, causes the problem that further increases manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a cooling water jacket for a rapid cooling quenching furnace, which solves the technical problem of poor quenching effect of the existing quenching furnace, and increases the contact area between fluid and the wall of the cavity by adopting the cooling water jacket provided by the utility model so as to improve the heat exchange effect and save the cost; through the technology of the sleeve insert and the like, a new cooling water jacket structure can be provided, and the defects of the traditional cooling water jacket are overcome. The cooling water jacket can also improve the heat exchange coefficient, improve the quenching hardness of the workpiece, and reduce the water flow when the quenching hardness required by the workpiece is lower, so that the quenching hardness is reduced, and the production cost is also reduced.
In order to achieve the aim, the utility model provides a cooling water jacket for a quick-cooling quenching furnace, which comprises a water jacket assembly, a cooling liner for storing workpieces and a heat dissipation assembly, wherein the outer surface of the cooling liner is annularly provided; the cooling inner container is nested in the water jacket assembly, the water jacket assembly comprises an outer sleeve, the cooling inner container is arranged in the outer sleeve in a suspending mode, and a water jacket interlayer for the flowing of the refrigerant is formed on the periphery of the cooling inner container so as to increase the contact area between the refrigerant and the cooling inner container.
Preferably, the water jacket assembly further comprises a water inlet pipe, a water outlet pipe, an air inlet pipe and a temperature detector; the water inlet pipe and the water outlet pipe are respectively fixed on the surface of the outer sleeve; the air inlet pipe and the temperature detector respectively penetrate through the outer sleeve and are respectively communicated with the cooling inner container.
Preferably, the outer sleeve comprises a plurality of cooling water flanges arranged at the top and the bottom of the outer sleeve and end flanges arranged at two ends of the outer sleeve; the cooling water flange is positioned at the top of the outer sleeve and communicated with the water inlet pipe, and the cooling water flange is positioned at the bottom of the outer sleeve and communicated with the water outlet pipe.
Preferably, the outer sleeve further comprises a plurality of air inlet flanges and detection flanges; the air inlet flanges are respectively arranged on two side surfaces of the outer sleeve and are communicated with the air inlet pipe; the detection flange is arranged at the top of the outer sleeve and is communicated with the temperature detector.
Preferably, the cooling liner comprises a liner core; the liner core is a square tube with a cambered surface on the top surface or the bottom surface, and the end part of the liner core is connected with the end part of the outer sleeve through a sealing plate so as to seal the water jacket interlayer.
Preferably, the heat dissipation assembly comprises a heat sink; the radiating fins are arranged corresponding to the top surface or the bottom surface of the liner core in an arc edge mode, the radiating fins are arranged corresponding to the side surfaces of the liner core in a straight edge mode, the radiating fins are evenly arranged on the peripheral surface of the liner core in an annular mode, and the radiating fins and the liner core are brazed through red copper.
Preferably, the material of the heat sink is SUS 304.
According to the technical scheme, the cooling water jacket for the rapid cooling quenching furnace provided by the utility model has the following beneficial effects:
1. the water jacket interlayer formed between the cooling water jacket and the cooling liner improves the contact area between the cooling water and the cooling liner.
2. The grid-shaped structure formed by the annular radiating fins destroys a stable boundary layer between the cooling liner and the cooling water, and further improves the radiating effect of the cooling liner.
3. The cooling fins and the cooling liner are brazed by red copper, and the heat transfer effect between the cooling liner and the cooling fins is further improved by the red copper with stronger heat conductivity, so that the purpose of improving the quenching hardness is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view of a cooling water jacket for a rapid cooling type quenching furnace according to an embodiment of the utility model;
FIG. 2 is a right side view of a cooling water jacket for a rapid cooling type quenching furnace according to an embodiment of the utility model;
fig. 3 is a sectional view of a cooling water jacket for a rapid cooling type quenching furnace according to an embodiment of the utility model;
FIG. 4 is a front view of a cooling water jacket for a rapid cooling type quenching furnace according to an embodiment of the utility model;
FIG. 5 is a schematic view of a cooling water jacket assembly for a rapid cooling quenching furnace according to an embodiment of the utility model;
fig. 6 is a schematic view of cooling water jacket cooling fins for a rapid cooling quenching furnace according to an embodiment of the utility model.
In the figure: 1 water jacket component, 2 cooling inner containers, 21 container cores, 22 radiating fins, 3 water jacket interlayers, 11 outer sleeves, 12 water inlet pipes, 13 water outlet pipes, 14 air inlet pipes, 15 temperature detectors, 111 cooling water flanges, 112 air inlet flanges, 113 detection flanges, 114 end flanges, 4 sealing plates, 221 straight edge pieces and 222 arc edge pieces.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, the cooling water jacket for the rapid cooling quenching furnace provided in this embodiment includes a water jacket assembly 1, a cooling liner 2, and fins 22 annularly disposed on an outer surface of the cooling liner 2.
In order to realize the heat exchange function, the water jacket assembly 1 is specifically arranged to comprise the outer sleeve 11, the cooling liner 2 is nested in the outer sleeve 11 to form a water jacket interlayer, cooling water flows in the water jacket interlayer, the heat exchange function between the cooling water and the cooling liner 2 is realized, meanwhile, the cooling liner 2 is suspended to enable the cooling water to wrap the cooling liner 2 to flow, and the contact area between the cooling water and the cooling liner 2 is further increased.
In order to realize that the cooling inner container 2 can store workpieces, the cooling inner container 2 comprises a container core 21 formed by a square tube, and a conveying belt is used for conveying the workpieces to penetrate through the container core 21 so that the workpieces can exchange heat in the container core 21.
In order to further improve the heat exchange effect, the radiating fins 22 are uniformly arranged on the outer surface of the liner core 21 in an annular shape, and the grid-shaped structure formed by the radiating fins 22 destroys the stable laminar flow of the cooling water on the surface of the liner core 21, so that the cooling water is subjected to regular step turbulence between the radiating fins 22, the cooling water is changed from the laminar flow into the turbulent flow, the heat exchange coefficient between the cooling water and the radiating fins 22 is improved, meanwhile, the annular radiating fins 22 further improve the contact area between the cooling liner 2 and the cooling water, and the rapid cooling effect of the quenching furnace is realized.
In order to further improve the heat conduction effect between the liner core 21 and the heat dissipation sheet 22, the heat dissipation sheet 22 and the liner core 21 are brazed by red copper, the heat of the workpiece is rapidly transmitted to the heat dissipation sheet 22 through the liner core 21 by the strong heat conductivity of the red copper, so that the heat conduction effect and the heat dissipation effect are synchronously improved, and the liner core 21 and the heat dissipation sheet 22 can be brazed by a vacuum brazing furnace in order to prevent impurities from being mixed in the brazing process.
In order to ensure smooth circulation and rapid heat dissipation of cooling water, a cooling water flange 111, an air inlet flange 112 and a detection flange 113 are respectively installed on the outer casing, wherein the cooling water flanges 111 are respectively fixed at two ends of the outer sheath, the water inlet pipe 12 is communicated with the cooling water flange 111 positioned at the top of the outer sheath, and the water outlet pipe 13 is communicated with the cooling water flange 111 at the bottom of the outer sheath, so that water flows along the movement direction of a workpiece to achieve the effect of rapid heat dissipation.
In order to continuously provide protective gas for the quenching furnace, two gas inlet flanges 112 are arranged on the side surface of the outer sleeve 11, two gas inlet pipes 14 are respectively communicated with the gas inlet flanges 112 and the liner core 21 so as to effectively feed the protective gas into the quenching furnace, meanwhile, a detection flange 113 is arranged on the top of the outer sleeve 11, and a temperature detector 15 is respectively communicated with the detection flange 113 and the quenching furnace so as to enable the temperature in the quenching furnace to be monitored in real time.
In order to enable cooling water to smoothly wrap the cooling liner 2 and smoothly flow out of the cold water jacket layer, the top of the liner core 21 is set to be an arc surface so as to reduce water flow resistance, the cooling water at the top of the liner core 21 flows to the two sides of the liner core 21 along the middle of the liner core 21, and meanwhile, the heat radiating fins 22 are respectively set to be straight side fins 221 and arc side fins 222 corresponding to the top and the side surfaces of the liner core 21.
In order to form a closed space between the water jacket interlayer, the end of the bladder core 21 and the end of the outer sleeve 11 are connected by a sealing plate 4, and end flanges 114 are provided at both ends of the outer sleeve 11 to connect the cooling water jacket and the quenching furnace integrally.
Based on the cooling water jacket for the rapid cooling type quenching furnace, taking a workpiece (410 stainless steel screw) as an example, the use mode is as follows:
the method comprises the following steps: the cooling water jacket is connected with the quenching furnace, cooling water is injected into the water inlet pipe 12, the cooling water passes through and is fully injected into the water jacket interlayer, and the cooling water flows out of the water outlet pipe 13;
step two: putting the workpiece (410 stainless steel screw) into a quenching furnace, heating to 1050 ℃, and conveying the workpiece into the liner core 21 by a conveying belt;
step three: the inner wall of the liner core 21 rapidly absorbs the heat of the workpiece (410 stainless steel screw), and the heat absorbed by the liner core 21 is transferred to the radiating fins 22 only through the red copper;
step four: when cooling water in the water jacket interlayer circulates, heat on the radiating fins 22 is rapidly taken away, and the workpiece (410 stainless steel screw) is rapidly cooled.
According to the following table, the quenching hardness of the workpiece (410 stainless steel screw) is improved by about HV70 DEG through the quenching parameter values of the cooling water jacket provided by the utility model and the quenching parameter values of the cooling water jacket not provided by the utility model, and the workpiece (410 stainless steel screw) meets the quenching hardness requirement.
According to the cooling water jacket for the rapid cooling type quenching furnace, through the water jacket interlayer formed between the cooling water jacket and the cooling inner container 2, the contact area between the cooling water and the cooling inner container 2 is improved, the stable boundary layer between the cooling inner container 2 and the cooling water is damaged through the annular grid-shaped structure of the radiating fins 22, the radiating effect of the cooling inner container 2 is further improved, red copper brazing is adopted between the radiating fins 22 and the cooling inner container 2, red copper with higher heat conductivity is adopted, the heat transfer effect between the cooling inner container 2 and the radiating fins 22 is further improved, the workpiece can be rapidly cooled to achieve the purpose of improving the quenching hardness, the structure is novel and effective, and the product is more convenient and practical.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (7)
1. A cooling water jacket for a rapid cooling type quenching furnace is characterized in that: the cooling device comprises a water jacket assembly, a cooling inner container for storing workpieces and a heat dissipation assembly annularly arranged on the outer surface of the cooling inner container; the cooling inner container is nested in the water jacket assembly, the water jacket assembly comprises an outer sleeve, the cooling inner container is arranged in the outer sleeve in a suspending mode, and a water jacket interlayer for the flowing of the refrigerant is formed on the periphery of the cooling inner container so as to increase the contact area between the refrigerant and the cooling inner container.
2. The cooling water jacket for a rapid cooling type quenching furnace according to claim 1, characterized in that: the water jacket assembly also comprises a water inlet pipe, a water outlet pipe, an air inlet pipe and a temperature detector; the water inlet pipe and the water outlet pipe are respectively fixed on the surface of the outer sleeve; the air inlet pipe and the temperature detector respectively penetrate through the outer sleeve and are respectively communicated with the cooling inner container.
3. The cooling water jacket for a rapid cooling type quenching furnace according to claim 2, characterized in that: the outer sleeve comprises a plurality of cooling water flanges arranged at the top and the bottom of the outer sleeve and end flanges arranged at two ends of the outer sleeve; the cooling water flange is positioned at the top of the outer sleeve and communicated with the water inlet pipe, and the cooling water flange is positioned at the bottom of the outer sleeve and communicated with the water outlet pipe.
4. The cooling water jacket for a rapid cooling type quenching furnace according to claim 2, characterized in that: the outer sleeve also comprises a plurality of air inlet flanges and detection flanges; the air inlet flanges are respectively arranged on two side surfaces of the outer sleeve and are communicated with the air inlet pipe; the detection flange is arranged at the top of the outer sleeve and is communicated with the temperature detector.
5. The cooling water jacket for a rapid cooling type quenching furnace according to claim 1, characterized in that: the cooling liner comprises a liner core; the liner core is a square tube with a cambered surface on the top surface or the bottom surface, and the end part of the liner core is connected with the end part of the outer sleeve through a sealing plate so as to seal the water jacket interlayer.
6. The cooling water jacket for a rapid cooling type quenching furnace according to claim 5, characterized in that: the heat dissipation assembly comprises a heat dissipation fin; the radiating fins are arranged corresponding to the top surface or the bottom surface of the liner core in an arc edge mode, the radiating fins are arranged corresponding to the side surfaces of the liner core in a straight edge mode, the radiating fins are evenly arranged on the peripheral surface of the liner core in an annular mode, and the radiating fins and the liner core are brazed through red copper.
7. The cooling water jacket for a rapid cooling type quenching furnace according to claim 6, characterized in that: the material of the heat sink is SUS 304.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121979328.4U CN215713152U (en) | 2021-08-23 | 2021-08-23 | Cooling water jacket for rapid cooling type quenching furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121979328.4U CN215713152U (en) | 2021-08-23 | 2021-08-23 | Cooling water jacket for rapid cooling type quenching furnace |
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| Publication Number | Publication Date |
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| CN215713152U true CN215713152U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121979328.4U Active CN215713152U (en) | 2021-08-23 | 2021-08-23 | Cooling water jacket for rapid cooling type quenching furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113528772A (en) * | 2021-08-23 | 2021-10-22 | 东莞市鑫迪机械设备有限公司 | Cooling water jacket for rapid cooling quenching furnace and processing method thereof |
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- 2021-08-23 CN CN202121979328.4U patent/CN215713152U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113528772A (en) * | 2021-08-23 | 2021-10-22 | 东莞市鑫迪机械设备有限公司 | Cooling water jacket for rapid cooling quenching furnace and processing method thereof |
| CN113528772B (en) * | 2021-08-23 | 2024-07-30 | 东莞市鑫迪机械设备有限公司 | Cooling water jacket for rapid cooling quenching furnace and processing method thereof |
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