CN110947910A - Cavity heat conduction heat-resistant metal mold - Google Patents

Cavity heat conduction heat-resistant metal mold Download PDF

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Publication number
CN110947910A
CN110947910A CN201811125804.9A CN201811125804A CN110947910A CN 110947910 A CN110947910 A CN 110947910A CN 201811125804 A CN201811125804 A CN 201811125804A CN 110947910 A CN110947910 A CN 110947910A
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heat
cavity
conduction
heat conduction
template
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CN201811125804.9A
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CN110947910B (en
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黄毅
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Chongqing Bore Intelligent Technology Co ltd
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北京中铸同方科技有限公司
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Publication of CN110947910A publication Critical patent/CN110947910A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/06Permanent moulds for shaped castings
    • B22C9/065Cooling or heating equipment for moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/20Stack moulds, i.e. arrangement of multiple moulds or flasks

Abstract

The invention discloses a cavity heat conduction heat-resistant metal mold, which comprises a template, a template bearing plate and a heat dissipation mechanism, wherein the inner surface of the template is provided with a cavity and is made of mold steel, the template bearing plate is arranged corresponding to the template and is fixedly connected with the template bearing plate, the heat dissipation mechanism comprises a heat conduction cavity, a heat conduction part and a circulating water tank, the heat conduction cavity is formed by the template and the template bearing plate at intervals, a heat conduction channel communicated with the heat conduction cavity is formed in the heat conduction part, the circulating water tank is used for carrying out heat exchange with the heat conduction part, and the heat conduction cavity and the heat conduction channel form a closed space. The invention utilizes the vacuum heat transfer and conduction cavity to conduct heat dredging arrangement on the template, and utilizes the external design of the circulating water tank, thereby effectively improving the heat exchange area with water and improving the temperature control effect.

Description

Cavity heat conduction heat-resistant metal mold
Technical Field
The invention belongs to the technical field of die manufacturing, and particularly relates to a cavity heat conduction heat-resistant high-temperature-resistant metal die.
Background
A casting mold is needed in the production process of the steel ball or other steel castings, and the traditional casting method generally adopts sand mold casting, namely, a sand mold is needed to be firstly cast during casting; when sanding, the mold is moved for a plurality of times, the utilization rate of molten steel is low, the finish degree of finished products is low, the shakeout phenomenon is serious, the pouring time is long, and the pollution problem also exists.
In order to solve these problems, sand-free casting molds are mostly adopted at present. However, the existing casting mold generally comprises a left mold plate and a right mold plate, wherein a cavity and a pouring gate are arranged in the middle of the two mold plates, and the two mold plates are closed during pouring, namely, the left mold plate and the right mold plate are closed, and pouring is completed through the pouring gate.
For example, patent document CN103121085A discloses a steel ball casting mold, which comprises two half molds, wherein the parting surface of the two half molds is provided with a plurality of semicircular ball grooves from top to bottom, and when the two half molds are closed, the two semicircular ball grooves form a complete spherical cavity; the upper and lower adjacent spherical cavities are communicated by an ingate; a sprue is arranged on one side of the spherical cavity, and the sprue is connected with the spherical cavity through a cross gate; the gas outlet of the gas tank and the pouring gate of the pouring gate are arranged at the top of the die. The scheme is the casting mold which is commonly adopted at present, and although the mold has the advantages of simple structure, easy processing and the like, the mold has the following defects:
when the finished product is taken out after the casting is finished, the finished product and the cavity are bonded tightly, so that the finished product can be finished by adopting a special demolding tool, generally manual operation is adopted, the labor intensity of workers is high, and the cost is high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a cavity heat conduction heat-resistant metal mold which can effectively and quickly control the surface temperature of a cavity and avoid adhesion.
The invention is realized by the following technical scheme:
the utility model provides a cavity heat conduction heat-resisting high temperature metal mold, includes that the internal surface is formed with the die cavity and the template of making by the mould steel, with the template correspond the template setting and fixed connection's template bearing plate, and heat dissipation mechanism, heat dissipation mechanism include template and template bearing plate interval set up the heat transfer heat conduction chamber that constitutes, inside be formed with the heat conduction portion of the heat conduction passageway that heat transfer heat conduction chamber is linked together to and be used for carrying out the heat exchange with heat conduction portion to circulating water tank, heat transfer heat conduction chamber and heat conduction passageway constitute airtight space.
In the above technical solution, the heat transfer and conduction chamber is divided into two or more chambers, each chamber is provided with a heat conduction part and a circulation water tank is correspondingly arranged in a manner of being shared by part or all of the chambers.
In the above technical scheme, a support column is arranged in the heat transfer and conduction cavity.
In the technical scheme, the heat transfer and conduction cavity and the die cavity are arranged along with the same thickness.
In the above technical solution, the heat conducting portion is plate-shaped.
In the above technical solution, the heat conducting portion includes an upper heat conducting plate and a lower heat conducting plate which are correspondingly welded, and a plurality of pillars for supporting and fixing the upper heat conducting plate and the lower heat conducting plate are disposed in the heat conducting channel.
In the above technical solution, the heat conducting portion is provided with a plurality of radiating branch pipes communicated with the heat conducting channel and distributed in the circulating water tank.
In the above technical solution, the heat conducting branch pipe is made of a seamless metal pipe, and the heat conducting portion is made of die steel.
In the above technical solution, the heat conduction channel of the heat conduction portion and the communication point of the heat transfer and heat conduction cavity are located at the top of the heat transfer and heat conduction cavity.
In the above technical solution, the heat conduction device further comprises a water temperature control mechanism communicated with the circulation water tank, and the circulation water tank is fixedly connected with the heat conduction part.
The invention has the advantages and beneficial effects that:
the research and analysis of the invention find that the tight bonding is caused by the poor heat dispersion of the template of the mould, especially when casting at high temperature, such as when casting molten steel, the temperature of the contact surface of the template and the molten steel is too high, and the bonding condition with the product can occur when the molten steel is formed, the invention utilizes the vacuum heat transfer and conduction cavity to conduct heat dispersion arrangement to the template, utilizes the external design of the circulating water tank, can effectively improve the heat exchange area with water, and improve the temperature control effect, and utilizes the high heat conduction performance of the vacuum heat conduction medium, can effectively control the whole thickness of the mould, compared with the built-in waterway mould, the whole processing cost and thickness are effectively controlled, meanwhile, under high temperature, especially when mould closing and forming, the heat transfer and conduction cavity under high temperature presents higher pressure because of the phase change of the vacuum heat conduction medium, reduces the pressure difference between the inner side and the outer side of the template, and reduces the strength and deformation, the molding quality of the product is improved.
Drawings
Fig. 1 is a schematic perspective view of a cavity heat conduction heat-resistant metal mold according to the present invention.
Fig. 2 is a schematic front view of the cavity heat conduction heat-resistant metal mold according to the present invention.
Fig. 3 is a schematic cross-sectional view of the cavity heat conduction heat-resistant metal mold according to the present invention.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.
Example one
The invention relates to a cavity heat conduction heat-resistant high-temperature metal mold, which comprises a template 1, a template bearing plate 11 and a heat dissipation mechanism, wherein a cavity 10 is formed on the inner surface of the template 1, the template bearing plate corresponds to the template 1 and is fixedly connected with the template, the heat dissipation mechanism comprises one or a plurality of heat conduction and conduction cavities 12 formed by the template and the template bearing plate at intervals, a heat conduction part 2 is internally provided with a heat conduction channel 21 communicated with the heat conduction and conduction cavities, and a circulating water tank for carrying out heat exchange with the heat conduction part, for example, the end part of the heat conduction part is contained in the circulating water tank 3, the heat conduction and conduction cavities and the heat conduction channel form a closed space, wherein the closed space is a vacuum cavity, a vacuum heat conduction medium is arranged in the closed space, namely, other air is not existed except the vacuum heat conduction medium, so as to improve the heat conduction effect, the vacuum heat conduction medium can adopt the medium of the, or liquid nitrogen mixture and the like, and the heat of the template is quickly transferred to the circulating water tank by utilizing the vacuum environment and the phase change along with the temperature, so that the temperature of the template is controlled. Preferably, the circulating water tank is fixedly connected with the heat conducting part or the bearing plate or the shaping plate of the shaping plate to realize the follow-up of the circulating water tank, and of course, the mould on the fixed side can also be fixedly installed in a mode of being fixedly connected with the outer auxiliary support. The heat conducting part at least less than the inner part of the circulating water tank can adopt design modes such as a fin type or a coil pipe type to increase the heat exchange area for improving the heat exchange effect in the circulating water tank.
The research and analysis of the invention find that the tight bonding is caused by the poor heat dispersion of the template of the mould, especially when casting at high temperature, such as when casting molten steel, the temperature of the contact surface of the template and the molten steel is too high, and the bonding condition with the product can occur when the molten steel is formed, the invention utilizes the vacuum heat transfer and conduction cavity to carry out the ultra-fast heat dispersion arrangement on the template, utilizes the external design of the circulating water tank to effectively improve the heat exchange area with water and improve the temperature control effect, and utilizes the high heat conduction performance of the vacuum heat conduction medium to effectively control the whole thickness of the mould, compared with the built-in water channel type mould, the whole processing cost and thickness are effectively controlled, meanwhile, at high temperature, especially when mould closing and forming, the pressure difference between the inner side and the outer side of the template is reduced because the phase change of the vacuum heat conduction medium in the heat transfer and conduction cavity at high temperature, the metal mold disclosed by the invention can adapt to high temperature of 600-1200 ℃, the application range is improved, and when high-temperature casting or die-casting is carried out, coating or sand mold arrangement on the surface of the mold is not needed, so that the mold melting and even adhesion caused by high temperature are effectively avoided.
Wherein, the template material is die steel, such as special die steel NAK 80. A feed inlet is designed above the shaping plate, and the length of the feed inlet is designed according to the characteristics of a product. The front and back of the template need be designed according to the shape of the product, and the wall thickness of the template needs to be designed by different materials and product shapes. Namely, in order to ensure the uniform heat dissipation effect of each point, the heat transfer and conduction cavity and the cavity are arranged along with the same thickness, namely, the inner surface and the outer surface of the template are oppositely arranged, and meanwhile, the bearing plate of the template is also arranged corresponding to the cavity, namely, the heat transfer and conduction cavity formed by stretching the inner surface of the template in the same thickness is formed, and naturally, the chamfer optimization design can be carried out according to the reduction of the flow channel resistance and the like where necessary. Aiming at different design requirements, the temperature control requirements can be realized by selecting different thicknesses of the heat transfer and conduction cavities, and sand-free forging or liquid metal forging can be realized.
Wherein, a support column is arranged in the heat transfer and conduction cavity. The back of the template, namely the strength of the template is enhanced by designing and manufacturing the supporting columns in the heat transfer and conduction cavity, and the arrangement density of the supporting columns is designed according to the strength requirement. The optimized material of the template bearing plate is consistent with the template, the mounting and connecting side of the template bearing plate needs to be designed and processed according to the template, the template and the template bearing plate are connected by a welding process, and meanwhile, the heat conducting part is welded and connected with the template bearing plate. After the welding of the parts is completed, a space which is only communicated with the heat conduction channel and is closed is formed between the shaping plate and the bearing plate, and the space can bear 5000 MPa of pressure to meet the casting requirement.
Generally, the heat conduction channel of the heat conduction part is communicated with the heat transfer and heat conduction cavity at the top of the heat transfer and heat conduction cavity. Of course, the heat conduction device can also be arranged at the side part or the bottom part of the heat conduction cavity, and only the smooth flow channel in the whole closed cavity is required to be ensured without generating extra blocking.
The circulating water tank is formed by welding 5 mm steel plates, and water leakage cannot be caused. The low lower part of the circulating water tank is provided with a cold water inlet 31 and the upper top is provided with a hot water outlet 32, the water inlet and the water outlet are connected with a circulating water pipeline in part, and the circulating water tank also comprises a water temperature control mechanism communicated with the circulating water tank. Such as circulating water or flowing water, etc. The heat exchange effect of the heat conducting part and the circulating water tank is ensured by the flowing of the cooling water of the external circulating water tank, and the stability of overall temperature control is improved.
Example 2
On the basis of the embodiment, for a large-scale or complex-structure mold, the heat transfer and conduction cavities can be divided into two or more than two cavities which are not communicated with each other according to the number or distribution of the cavities, each heat transfer and conduction cavity is correspondingly provided with the heat conduction part, and the circulating water tank 3 is respectively or partially or completely shared, the heat conduction effect of the vacuum heat conduction medium in the mold can be ensured through different heat transfer and conduction cavity settings, moreover, different temperature control can be realized for different parts, the casting requirements of large-scale products or special-shaped products are met, the casting quality is improved, different heat transfer and conduction cavities are led out through the heat conduction parts and then enter the corresponding circulating water tank or the same circulating water tank, additional configuration can be reduced, and the load of the whole mold is controlled. Wherein, the same heat transfer and conduction cavity can be connected with two or more heat conduction parts according to the requirement, and the connection result is similar to that described above, and the description is omitted here.
Example 3
As a specific embodiment, the heat conducting portion is plate-shaped, the heat conducting plates correspond to the upper heat conducting plate 22 and the lower heat conducting plate 23 which are welded, and a plurality of pillars for supporting and fixing the upper heat conducting plate and the lower heat conducting plate are arranged in the heat conducting channel. The heat conducting part is provided with a plurality of radiating branch pipes which are communicated with the heat conducting channel and distributed in the circulating water tank. The radiating branch pipes are sealed from the end parts to form a closed space.
Specifically, the upper and lower heat-conducting plates are made of die steel, such as special die steel P20. The upper and lower heat conducting plates are welded into a whole through argon arc, a plurality of support columns are manufactured on the lower heat conducting plate, the distance is 100-by-100 mm, the support columns are designed to be cylindrical, and the diameter is 12 mm. The support column is used for preventing the heat conducting part from deforming when the mold is vacuumized. The heat conducting plate is welded to form a hollow container. The heat conducting branch pipe 24 is made of a seamless metal pipe, for example, the heat radiating branch pipe is made of a seamless steel pipe with the diameter of 25 mm and the wall thickness of 2 mm, and other pipes, such as a copper pipe or an aluminum alloy pipe, are welded on the upper heat conducting plate, and the inner hole is communicated with the space in the heat conducting plate.
The heat conduction branch pipe set up and extend in circulating water tank for the parallel interval of multiunit, effectively increase heat transfer area, certainly, the heat transfer branch pipe can adopt spiral or fin formula design in order to further promote the heat transfer effect.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.

Claims (10)

1. The utility model provides a cavity conduction heat-conduction high temperature resistant metal mold which characterized in that: the heat dissipation mechanism comprises a heat transfer and heat conduction cavity formed by the template and the template bearing plate at intervals, a heat conduction part internally formed with a heat conduction channel communicated with the heat transfer and heat conduction cavity, and a circulating water tank used for exchanging heat with the heat conduction part, wherein the heat transfer and heat conduction cavity and the heat conduction channel form a closed space.
2. A cavity heat conduction heat resistant metal mold as claimed in claim 1, wherein: the heat transfer and conduction cavity is divided into two or more than two cavities, each heat transfer and conduction cavity is respectively provided with a heat conduction part, and the circulation water tanks are respectively, partially or totally and correspondingly arranged.
3. A cavity heat conduction heat resistant metal mold as claimed in claim 1, wherein: and a support column is arranged in the heat transfer and conduction cavity.
4. A cavity heat conduction heat resistant metal mold as claimed in claim 1, wherein: the heat transfer and conduction cavity and the die cavity are arranged along the shape with equal thickness.
5. A cavity heat conduction heat resistant metal mold as claimed in claim 1, wherein: the heat conducting part is plate-shaped.
6. The cavity heat conduction heat-resistant metal mold as claimed in claim 5, wherein: the heat conducting part comprises an upper heat conducting plate and a lower heat conducting plate which are correspondingly welded, and a plurality of pillars for supporting and fixing the upper heat conducting plate and the lower heat conducting plate are arranged in the heat conducting channel.
7. A cavity heat conduction heat resistant metal mold as claimed in claim 1, wherein: the heat conducting part is provided with a plurality of radiating branch pipes which are communicated with the heat conducting channel and distributed in the circulating water tank.
8. A cavity heat conduction heat resistant metal mold as claimed in claim 7, wherein: the heat conducting branch pipe is made of a seamless metal pipe, and the heat conducting part is made of die steel.
9. A cavity heat conduction heat resistant metal mold as claimed in claim 1, wherein: the heat conduction channel of the heat conduction part is communicated with the heat transfer and heat conduction cavity at the top of the heat transfer and heat conduction cavity.
10. A cavity heat conduction heat resistant metal mold as claimed in claim 1, wherein: the water temperature control mechanism is communicated with the circulating water tank, and the circulating water tank is fixedly connected with the heat conducting part.
CN201811125804.9A 2018-09-26 2018-09-26 Cavity heat conduction heat-resistant metal mold Active CN110947910B (en)

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CN110947910B CN110947910B (en) 2021-10-26

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110232856A1 (en) * 1998-06-11 2011-09-29 Malcolm Barry James Temperature control method and apparatus
US20160325349A1 (en) * 2014-12-02 2016-11-10 Halliburton Energy Services, Inc. Steam-blocking cooling systems that help facilitate directional solidification
KR20170005668A (en) * 2015-07-06 2017-01-16 주식회사 유도 Die-casting molds provided with a heating element
CN106862491A (en) * 2017-03-29 2017-06-20 福建工程学院 One kind become shape heating cooling mould and its processing and application method
CN107127307A (en) * 2017-06-22 2017-09-05 广东合新材料研究院有限公司 The very fast samming cooler prepared for amorphous
CN206824646U (en) * 2017-03-30 2018-01-02 昆山市长发铝业有限公司 A kind of mould with hydrologic cycle cooling system
CN207873045U (en) * 2018-01-25 2018-09-18 池州市九华明坤铝业有限公司 A kind of novel small diameter aluminum alloy thin walled pipe multiple-hole die

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110232856A1 (en) * 1998-06-11 2011-09-29 Malcolm Barry James Temperature control method and apparatus
US20160325349A1 (en) * 2014-12-02 2016-11-10 Halliburton Energy Services, Inc. Steam-blocking cooling systems that help facilitate directional solidification
KR20170005668A (en) * 2015-07-06 2017-01-16 주식회사 유도 Die-casting molds provided with a heating element
CN106862491A (en) * 2017-03-29 2017-06-20 福建工程学院 One kind become shape heating cooling mould and its processing and application method
CN206824646U (en) * 2017-03-30 2018-01-02 昆山市长发铝业有限公司 A kind of mould with hydrologic cycle cooling system
CN107127307A (en) * 2017-06-22 2017-09-05 广东合新材料研究院有限公司 The very fast samming cooler prepared for amorphous
CN207873045U (en) * 2018-01-25 2018-09-18 池州市九华明坤铝业有限公司 A kind of novel small diameter aluminum alloy thin walled pipe multiple-hole die

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Effective date of registration: 20220422

Address after: 401329 room 408-82, 4th floor, building 1, No. 10, Fengde Road, Jinfeng Town, high tech Zone, Chongqing

Patentee after: Chongqing bore Intelligent Technology Co.,Ltd.

Address before: 102200 1-307-2, building 1, No. 20, Xiguan Road, Chengbei street, Changping District, Beijing

Patentee before: Beijing Zhongzhu Tongfang Technology Co.,Ltd.