CN212161048U - Fluidity measuring device of low-temperature mold material - Google Patents
Fluidity measuring device of low-temperature mold material Download PDFInfo
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- CN212161048U CN212161048U CN202021181508.3U CN202021181508U CN212161048U CN 212161048 U CN212161048 U CN 212161048U CN 202021181508 U CN202021181508 U CN 202021181508U CN 212161048 U CN212161048 U CN 212161048U
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Abstract
The utility model provides a mobile measuring device of low temperature mould material, include: the mold assemblies are arranged on the rack, each mold assembly comprises an upper template and a lower template, the upper template is arranged on the lower template, one surface of the lower template, which is close to the upper template, is provided with a snake-shaped runner, the upper template is provided with a runner port, and the runner port is communicated with a pouring inlet of the snake-shaped runner; the pouring cup is arranged on the upper template and formed by splicing two pouring cup plates, and the pouring cup is communicated with the pouring inlet through the runner port; and the heating device is arranged on the rack. The utility model discloses a mobility measuring device of low temperature mould material, the pouring basin adopts split type, has avoided blind hole structural design, and after the experiment finishes, wax material in the easy-to-clean pouring basin prevents that the blind hole is clean not clean, has reduced a large amount of clean time.
Description
Technical Field
The utility model relates to an investment casting teaching technical field, concretely relates to mobility measuring device of low temperature mould material.
Background
Casting is one of the basic processes of the modern basic machinery manufacturing industry. The fluidity experiment related to the casting process is a basic experiment course of mechanical engineering specialties of ordinary colleges and universities. Through the fluidity experimental teaching, students can know the concept, the testing method and the influencing factors of the fluidity of the material, and meanwhile, the students can comprehensively know the basic knowledge of engineering materials and material forming.
Traditional fluidity experiment teaching mainly focuses on the field of aluminum alloy materials, and fluidity is one of casting performances of alloy and directly influences the mold filling capacity of liquid alloy. The better the fluidity of the alloy, the stronger the mold filling capability, the more the casting with clear outline, thin wall and complex can be cast, and simultaneously the alloy is also beneficial to the floating and discharging of impurities and gas and the shrinkage and repair in the solidification process; and the alloy with poor fluidity is difficult to fill the die cavity, the die filling capability is reduced, and the defects of insufficient casting, cold shut, air holes, slag inclusion and the like are easy to generate.
With the development of the technology, investment casting is gradually developed. Investment casting, also known as precision casting or lost wax casting, is a process in which a fusible material (wax, etc.) is used to make a precise fusible pattern, a plurality of layers of refractory coatings are applied to the pattern, the pattern is dried and hardened to form an integral shell, the lost wax is melted by heating the shell, the shell is baked at high temperature to form a refractory shell, liquid metal is poured into the shell, and the shell is cooled to form a casting. The main advantages of investment casting over other casting methods are as follows: the casting has high dimensional precision and low surface roughness, can cast castings with complex shapes, generally has precision reaching 5-7 level and roughness reaching two Ra25-6.3 mu m; the casting method can be used for casting thin-wall castings and castings with small weight, the minimum wall thickness of the investment casting can reach 0.5mm, and the weight can be as small as several grams; the casting with fine patterns, characters and fine grooves and bent pores can be cast; the shape and the inner cavity shape of the investment casting are almost not limited, parts with complex shapes which are difficult to manufacture by sand casting, forging, cutting processing and other methods can be manufactured, and some assemblies and welding parts can be directly cast into integral parts after structural improvement, so that the weight of the parts is reduced, and the production cost is reduced; the type of casting alloy is almost unlimited and is commonly used for casting alloy steel parts, carbon steel parts and heat-resistant alloy castings; production batches are not limited and can range from single-piece to batch mass production. With the development of investment casting technology, the variety of the mould materials is increasingly diversified, and the compositions are different. The molding materials are generally divided into high-temperature, medium-temperature and low-temperature molding materials according to the melting point of the molding materials. The melting point of the low-temperature mould material is about 60 ℃, and the paraffin-stearic acid mixture widely applied in China is used as the low-temperature mould material. The melting point of the high-temperature mould material is higher than 120 ℃, and the mould material consisting of 50% of rosin, 20% of ozokerite and 30% of polystyrene is a typical high-temperature mould material. The melting point of the medium-temperature mould material is between the two types of mould materials, and the existing medium-temperature mould material can be basically divided into two types of rosin-based mould material and wax-based mould material.
In the experimental practice teaching of various colleges and universities, some fluidity measurement teaching experiments are usually carried out in order to present the investment casting process to students, and the fluidity measurement teaching experiments are realized by a fluidity measurement teaching device. The pouring basin integrated into one piece of present mobility measurement teaching device has a lot of blind holes, and after the measurement is accomplished the pouring basin is difficult for clearing up, has increased the work load of clearance.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a mobility measuring device of low temperature mould material, the pouring basin adopts split type, has avoided blind hole structural design, and after the experiment finishes, wax material in the easy clean pouring basin prevents that the blind hole is clean not clean, has reduced a large amount of clean time.
In order to achieve the above purpose, the utility model discloses a technical scheme who takes is:
a fluidity measuring device of a low-temperature mold material comprises: the mold assemblies are arranged on the rack, each mold assembly comprises an upper template and a lower template, the upper template is arranged on the lower template, one surface of the lower template, which is close to the upper template, is provided with a snake-shaped runner, the upper template is provided with a runner port, and the runner port is communicated with a pouring inlet of the snake-shaped runner; the pouring cup is arranged on the upper template and formed by splicing two pouring cup plates, and the pouring cup is communicated with the pouring inlet through the runner port; and the heating device is arranged on the rack.
Furthermore, the pouring cup plate comprises a material cup groove, a discharging pipe groove, connecting holes and a fixing hole groove, the discharging pipe groove is located below the material cup groove, the two pouring cup plates are spliced into a pouring cup through the connecting holes, the fixing hole groove is formed in the base of the pouring cup, the two fixing hole grooves are spliced into a fixing hole, and the pouring cup is arranged on the die assembly through the fixing hole.
Furthermore, the upper template and the lower template are both rectangular plates, the upper template and the lower template are both correspondingly provided with two positioning holes, the positioning holes in the upper template are located on one diagonal line of the upper template, and the upper template and the lower template are assembled by screws after being limited by positioning pins.
Further, the upper template is a transparent material plate.
Further, the transparent material plate is one of a PC plate, an organic glass plate, or a paml plate.
Compared with the prior art, the technical scheme of the utility model have following advantage:
the utility model discloses a mobility measuring device of low temperature mould material, the pouring basin adopts split type, has avoided blind hole structural design, and after the experiment finishes, wax material in the easy-to-clean pouring basin prevents that the blind hole is clean not clean, has reduced a large amount of clean time.
Drawings
The technical solution and the advantages of the present invention will be made apparent from the following detailed description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a structural diagram of a fluidity measuring device for a low-temperature mold material according to an embodiment of the present invention;
fig. 2 is a structural view of a device for measuring the flowability of a low-temperature molding material according to another embodiment of the present invention;
fig. 3 is a block diagram of a mold assembly according to an embodiment of the present invention;
fig. 4 is a diagram illustrating an upper mold plate structure according to an embodiment of the present invention;
FIG. 5 is a view of a mold assembly and a pouring cup according to an embodiment of the present invention;
fig. 6 shows an exploded view of a pouring cup according to an embodiment of the present invention;
fig. 7 is a side view of a sprue cup plate according to an embodiment of the present invention;
fig. 8 is a structural view of an incubator according to an embodiment of the present invention;
fig. 9 is an experimental flowchart of a fluidity measuring device for low-temperature mold material according to an embodiment of the present invention.
Reference numerals
The device comprises a frame 1, a mold assembly 2, an upper mold plate 21, a runner port 211, a lower mold plate 22, a serpentine runner 221, a pouring inlet 222, a straight runner 223, a semicircular runner 224, a conveying groove 225, a positioning pin 23, a positioning hole 24, a pouring cup 3, a pouring cup plate 31, a material cup groove 32, a material discharging pipe groove 33, a connecting hole 34, a fixing hole groove 35, a butterfly nut 36, a hand-screwed bolt 37, a gasket 38, a heating device 4, a container 41, a second partition net 42, an oven box 43, a storage device 5, a horizontal ruler 6 and an electronic scale 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment provides a fluidity measuring device of low temperature mould material, as shown in fig. 1 ~ 2, include: frame 1, mould subassembly 2, pouring basin 3, heating device 4 and storage device 5. At least one of the die assemblies 2 is arranged on the rack 1, so that multiple groups of experiments can be carried out simultaneously, and the classroom experiment time is saved. The pouring cup 3 is arranged on the die assembly 2, and the heating device 4 is arranged on the frame 1. The receiving device 5 can be arranged on the frame 1 below the mold assembly 2 according to the space arrangement requirement, the receiving device 5 is used for receiving materials such as experimental materials or tools, and the receiving device 5 is preferably a receiving box or a receiving cabinet.
The frame 1 the mould subassembly 2 and pouring basin 3 all adopts stainless steel material or aluminum alloy material preparation, prevents that equipment from rustting, and the clearance is difficult. The fluidity measuring device further comprises a level ruler 6 and an electronic scale 7. Frame 1 sets up adjust knob, level bar 6 set up in the frame 1, adjust knob with 6 cooperation adjustments of level bar the levelness of mould subassembly 2 avoids gravity to the influence of mobility measurement. The electronic scale 7 is used for weighing the experimental materials.
As shown in fig. 3 to 4, the mold assembly 2 includes an upper mold plate 21 and a lower mold plate 22, the upper mold plate 21 is disposed on the lower mold plate 22, the upper mold plate 21 is a transparent material plate, and the transparent material plate is one of a PC plate, an organic glass plate, or a paml plate. The transparent material plate is used as the upper template, so that the flowing and forming processes of the low-temperature mold material in the pouring process in the runner of the lower template 22 are visualized, and the experimental phenomenon is easy to observe. Meanwhile, the visual upper template 21 is combined, so that the surface appearance and the quality of the sample obtained under different pouring conditions can be visually observed. The upper template 21 and the lower template 22 are rectangular plates, the upper template 21 and the lower template 22 are both provided with two positioning holes 24 correspondingly, the positioning holes 24 on the upper template 21 are located on one diagonal line of the upper template 21, and the upper template 21 and the lower template 22 are assembled by screws after being limited by positioning pins 23.
A serpentine runner 221 is arranged on one side of the lower template 22 close to the upper template 21, a runner port 211 is arranged on the upper template 21, and the runner port 211 is communicated with a pouring inlet 222 of the serpentine runner 221. The serpentine runner 221 includes at least two straight runners 223 and at least one semicircular runner 224, the two straight runners 223 are connected through the semicircular runner 224, and the pouring inlet 222 is connected to one end of one straight runner 223. In the design of the straight flow channel 223 and the semicircular flow channel 224, the lengths of the straight flow channel 223 and the semicircular flow channel 224 are generally designed to be fixed integer values so as to facilitate the measurement and reading of experimental data.
As shown in fig. 4 to 7, the pouring cup 3 is formed by splicing two pouring cup plates 31, and the pouring cup 3 is communicated with the pouring inlet 222 through the runner port 211. The pouring cup plate 31 comprises a material cup groove 32, a discharging pipe groove 33, a connecting hole 34 and a fixing hole groove 35, the discharging pipe groove 33 is located below the material cup groove 32, the two pouring cup plates 31 are spliced into a pouring cup 3 through the connecting hole 34, the two pouring cup grooves 32 are spliced into a cup body, the two discharging pipe grooves 33 are spliced into a discharging pipe, the upper end of the discharging pipe is communicated with the cup body, and the lower end of the discharging pipe is accommodated in the runner port. Using the hand-screwed bolts 37 through the connecting holes 34, a student can splice the two tundish plates 31 by tightening the wing nuts 36, and assembly of the tundish 3 can be achieved without the aid of tools. The gasket 38 separates the hand-screwed bolt 37 from the sprue cup plate 31, so that the abrasion of the sprue cup plate 31 can be reduced, the service life can be prolonged, the gasket 38 can be replaced after the abrasion occurs, and the maintenance cost can be saved.
The fixing hole grooves 35 are formed in the base of the pouring cup 3, the two fixing hole grooves 35 are spliced to form a fixing hole, and the pouring cup 3 is arranged on the die assembly 2 through the fixing hole. The blanking pipe extends into the runner port 211, and the upper template 21 and the lower template 22 are compressed along with the compression of the sprue cup 3 and the die assembly 2.
The heating device is a thermostat, as shown in fig. 8, the thermostat comprises a second partition net 42 and an oven body 43, and the oven body 43 can set the temperature range to be 40-300 ℃, so that the temperature can be constant. The oven body 43 can accommodate 4 containers 41 at a time through the partition of the second partition net 42.
The utility model discloses set up multiple fastening mode, when realizing the teaching of mobile experiment, can also increase the study of student to common mechanical connection mode.
Taking a wax formula A and a wax formula B as materials to be measured, performing two temperature experiments on each material, and describing the fluidity measuring method by taking the container 41 as a stainless steel cup, as shown in fig. 9, the method comprises the following steps:
s10 test preparation, checking the fluidity measuring device of the low-temperature mould material, cleaning floating dust and impurities on the surface of a runner and the like, assembling the fluidity measuring device of the low-temperature mould material, and arranging two mould components 2 with the numbers of 1# and 2# respectively.
S20 wax formula A is prepared in two stainless steel cups, the two stainless steel cups containing the wax formula A are placed in a heating device 4, the two stainless steel cups are numbered 1 '#and2' #respectively, the 1 '# stainless steel cup is heated to 65 ℃, and the 2' # stainless steel cup is heated to 75 ℃, so that a molten material is obtained.
S30 casting the melt of the 1 '# stainless steel cup through the pouring cup into the 1# mold assembly 2 and the melt of the 2' # stainless steel cup through the pouring cup into the 2# mold assembly 2, and recording the casting result data including the surface quality of the test specimen, the filling length of the test specimen, and the flow time. And
s40, cleaning wax materials, and after the mould assembly 2 is cooled to room temperature, cleaning the mould assembly 2 and the wax material formula A on the experiment table to prepare for the next experiment.
Repeating the step of S20, preparing a wax formula B in the two cleaned stainless steel cups, placing the two stainless steel cups containing the wax formula B in a heating device 4, heating the 1 '# stainless steel cup to 65 ℃, and heating the 2' # stainless steel cup to 75 ℃ to obtain a molten material.
Repeating the step of S30, pouring the molten material of the 1 '# stainless steel cup into the 1# mould assembly through the pouring cup, pouring the molten material of the 2' # stainless steel cup into the 2# mould assembly 2 through the pouring cup, and recording the pouring result data, wherein the pouring result data comprises the surface quality of the sample, the filling length of the sample and the flowing time.
And repeating the step S40, and after the mould assembly 2 is cooled to the room temperature, cleaning the wax material and resetting the fluidity measuring device of the low-temperature mould material, so as to finish the fluidity measurement of the wax material formula A and the wax material formula B.
The molten material is injected from the upper end of the pouring cup 3, flows into the pouring inlet 222 through the pouring cup 3 and then flows along the snake-shaped flow channel 221 in sequence, the molten material flows and fills the mold in the flow channel of the mold assembly 2, the flowing process of the wax material can be directly observed through the transparent plate, the molten material is cooled after the cooling time of the molten material is reached, and finally the flowing quality of the molten material is represented by the filling length after cooling. And meanwhile, the visual transparent plate is combined, so that the surface appearance and quality of the sample obtained under different pouring conditions can be visually observed. Flow re-length at two temperatures for different wax materials is shown in Table 1 below
It can be seen from table 1 that the higher the temperature, the longer the mold length, and the different wax formulations also have different flow lengths at the same temperature.
Table 1.
The above is only the exemplary embodiment of the present invention, and not the limitation of the present invention, all the equivalent structures or equivalent processes of the present invention are used, or directly or indirectly applied to other related technical fields, and the same principle is included in the patent protection scope of the present invention.
Claims (5)
1. The utility model provides a fluidity measuring device of low temperature mould material which characterized in that includes:
the mold assemblies are arranged on the rack, each mold assembly comprises an upper template and a lower template, the upper template is arranged on the lower template, one surface of the lower template, which is close to the upper template, is provided with a snake-shaped runner, the upper template is provided with a runner port, and the runner port is communicated with a pouring inlet of the snake-shaped runner;
the pouring cup is arranged on the upper template and formed by splicing two pouring cup plates, and the pouring cup is communicated with the pouring inlet through the runner port; and
and the heating device is arranged on the rack.
2. The apparatus for measuring the flowability of a low-temperature molding material according to claim 1, wherein the sprue cup plate comprises a sprue cup groove, a blanking pipe groove, a connecting hole and a fixing hole groove, the blanking pipe groove is located below the sprue cup groove, the two sprue cup plates are spliced into a sprue cup through the connecting hole, the fixing hole groove is formed in a base of the sprue cup, the two fixing hole grooves are spliced into a fixing hole, and the sprue cup is arranged on the mold assembly through the fixing hole.
3. The device for measuring the flowability of the low-temperature die material according to claim 1, wherein the upper die plate and the lower die plate are rectangular plates, the upper die plate and the lower die plate are respectively provided with two positioning holes, the two positioning holes in the upper die plate are located on one diagonal line of the upper die plate, and the upper die plate and the lower die plate are assembled by screws after being limited by the positioning pins.
4. The apparatus for measuring the flowability of a low-temperature molding material according to claim 1, wherein the upper mold plate is a transparent material plate.
5. The apparatus for measuring the flowability of a low-temperature molding material according to claim 4, wherein the transparent material plate is one of a PC plate, a plexiglas plate or a Permer plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021181508.3U CN212161048U (en) | 2020-06-23 | 2020-06-23 | Fluidity measuring device of low-temperature mold material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021181508.3U CN212161048U (en) | 2020-06-23 | 2020-06-23 | Fluidity measuring device of low-temperature mold material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111833692A (en) * | 2020-06-23 | 2020-10-27 | 南通大学 | Device and method for measuring flowability of low-temperature mold material |
| CN113804584A (en) * | 2021-09-01 | 2021-12-17 | 南通大学 | Material fluidity experimental device based on spiral flow channel |
-
2020
- 2020-06-23 CN CN202021181508.3U patent/CN212161048U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111833692A (en) * | 2020-06-23 | 2020-10-27 | 南通大学 | Device and method for measuring flowability of low-temperature mold material |
| CN113804584A (en) * | 2021-09-01 | 2021-12-17 | 南通大学 | Material fluidity experimental device based on spiral flow channel |
| CN113804584B (en) * | 2021-09-01 | 2024-05-31 | 南通大学 | Material fluidity experimental device based on spiral flow channel |
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Assignee: Nantong Chenwen Technology Equipment Manufacturing Co.,Ltd. Assignor: NANTONG University Contract record no.: X2021980008201 Denomination of utility model: A fluidity measuring device for low temperature mold Granted publication date: 20201215 License type: Common License Record date: 20210824 |