CN114833323A - Fluidity test die for die-casting alloy - Google Patents

Abstract

The invention provides a fluidity test die for die-casting alloy, which comprises a die body, a pouring gate, a flow channel and a cavity, wherein the pouring gate, the flow channel and the cavity are arranged on the die body; the die cavities at least comprise a first die cavity and a second die cavity, the first die cavity and the second die cavity are respectively communicated with the flow channel, the first die cavity is in one of a rectangular shape, a convoluted shape, a stepped shape, a bent shape and a cylindrical shape, and the second die cavity is in the other of the rectangular shape, the convoluted shape, the stepped shape, the bent shape and the cylindrical shape. Compared with the prior art, the die for testing the fluidity of the die-casting alloy provided by the invention has at least two cavities with different shapes, so that at least two different samples can be formed in one testing process when the popular performance of the liquid alloy is tested, and the fluidity and the filling performance of the alloy can be more accurately tested.

Description

Flow test mold for die casting alloys

technical field

The invention relates to the technical field of casting test molds, in particular to a fluidity test mold for die-casting alloys.

Background technique

As a fast near-net forming process, die casting has the characteristics of high production efficiency, high dimensional accuracy, excellent mechanical properties, and can form thin-walled deep cavity castings with complex shapes and clear contours. In order to obtain high-quality integrated large-scale, complex, thin-walled aluminum alloy die castings for automobiles, the study of the mold filling flow behavior of thin-walled aluminum alloys has become a basic problem in the molding of such parts, because it is not only directly related to whether the parts can be formed completely, At the same time, it also affects the final microstructure and mechanical properties of the casting.

The filling ability of the alloy refers to the ability of the liquid alloy to fill the mold and obtain a casting with a complete shape and clear contour, which depends on the flow ability of the liquid alloy itself and is affected by external conditions. When the external conditions are the same, the fluidity of the liquid alloy mainly depends on the composition of the alloy itself. In the actual production process, the mold filling properties of the alloy must be understood in order to better evaluate the alloy's prospects in engineering applications.

In the prior art, test molds are usually used to test the flow properties of liquid alloys. The test mold is provided with a cavity. During the test, the liquid alloy is injected into the mold from the pouring port of the test mold, so that the liquid alloy flows and fills the cavity, so as to test the flow properties of the liquid alloy.

However, the test mold in the prior art is only provided with a cavity of a single shape. Although it can detect the flow properties of the liquid alloy to a certain extent, it cannot accurately measure the flow properties and filling properties of the liquid alloy.

SUMMARY OF THE INVENTION

Aiming at the technical problem that the test mold of the prior art adopts a single-shaped cavity, when the fluidity test of the liquid alloy is performed, the fluidity and filling performance of the liquid alloy cannot be accurately measured. The present invention provides a fluidity test mold for die-casting alloys, which has at least two cavities with different shapes and structures, so that the fluidity and mold filling properties of the alloy can be tested more accurately.

A fluidity test mold for die-casting alloys, comprising a mold body, a sprue, a runner and a cavity opened on the mold body,

the flow channel is communicated with the pouring mouth;

The mold cavity at least includes a first mold cavity and a second mold cavity, the first mold cavity and the second mold cavity are respectively communicated with the flow channel, and the shape of the first mold cavity is rectangular, One of a circle shape, a stepped shape, a curved shape, and a cylindrical shape, and the shape of the second cavity is the other of a rectangular shape, a circle shape, a stepped shape, a curved shape, and a cylindrical shape.

Preferably, the shape of the first cavity is a rectangle, and the shape of the second cavity is a circle shape.

Preferably, the length of the first cavity is greater than the width of the first cavity.

Preferably, the second cavity includes an inner cavity and a revolving cavity;

The revolving cavity surrounds the circumference of the inner cavity, one end of the revolving cavity is communicated with the inner cavity, and the other end of the revolving cavity is communicated with the flow channel.

Preferably, the revolving cavity includes a first cavity, a second cavity, a third cavity, a fourth cavity, a fifth cavity, a sixth cavity, a seventh cavity, an eighth cavity, a ninth cavity cavity and the tenth cavity;

the first cavity is arranged along the width direction and communicates with the flow channel;

The second cavity is arranged along the length direction, and one end of the second cavity is communicated with the first cavity;

The third cavity is arranged along the width direction, one end of the third cavity communicates with the other end of the second cavity, and the third cavity and the first cavity are located in the second cavity the same side of the cavity;

The fourth cavity is arranged along the length direction, one end of the fourth cavity communicates with the other end of the third cavity, and the fourth cavity and the second cavity are located in the third cavity the same side of the cavity;

The fifth cavity is arranged along the width direction, one end of the fifth cavity communicates with the other end of the fourth cavity, and the fifth cavity and the third cavity are located in the fourth cavity the same side of the cavity;

The sixth cavity is arranged along the length direction, one end of the sixth cavity communicates with the other end of the fifth cavity, and the sixth cavity and the fourth cavity are located in the fifth cavity the same side of the cavity;

The seventh cavity is arranged along the width direction, one end of the seventh cavity communicates with the other end of the sixth cavity, and the seventh cavity and the fifth cavity are located in the sixth cavity the same side of the cavity;

The eighth cavity is arranged along the length direction, one end of the eighth cavity communicates with the other end of the seventh cavity, and the eighth cavity and the sixth cavity are located in the seventh cavity the same side of the cavity;

The ninth cavity is arranged along the width direction, one end of the ninth cavity communicates with the other end of the eighth cavity, and the ninth cavity and the seventh cavity are located in the eighth cavity the same side of the cavity;

The tenth cavity is disposed along the length direction, one end of the tenth cavity communicates with the other end of the ninth cavity, and the other end of the tenth cavity communicates with the inner cavity.

Preferably, the cavity further includes a third cavity, and the shape of the third cavity is stepped.

Preferably, the third cavity includes a plurality of cavity units, and the plurality of the cavity units are communicated in sequence along the length direction;

From the direction close to the flow channel to the direction away from the flow channel, the thicknesses of the plurality of cavity units gradually decrease.

Preferably, the mold cavity further includes a fourth mold cavity, and the shape of the fourth mold cavity is curved.

Preferably, the fourth cavity includes a first arc-shaped cavity, a second arc-shaped cavity, a third arc-shaped cavity, a fourth arc-shaped cavity, a fifth arc-shaped cavity and a sixth arc-shaped cavity which are arranged in sequence along the length direction. cavity;

One end of the first arc-shaped cavity is communicated with the flow channel, and the opening of the first arc-shaped cavity faces one side in the width direction;

One end of the second arc-shaped cavity is communicated with the other end of the first arc-shaped cavity, and the opening of the second arc-shaped cavity faces the other side in the width direction;

One end of the third arc-shaped cavity is communicated with the other end of the second arc-shaped cavity, and the opening direction of the third arc-shaped cavity is the same as the opening direction of the first arc-shaped cavity;

One end of the fourth arc-shaped cavity is communicated with the other end of the third arc-shaped cavity, and the opening direction of the fourth arc-shaped cavity is the same as the opening direction of the second arc-shaped cavity;

One end of the fifth arc-shaped cavity is communicated with the other end of the fourth arc-shaped cavity, and the opening direction of the fifth arc-shaped cavity is the same as the opening direction of the third arc-shaped cavity;

One end of the sixth arc-shaped cavity communicates with the other end of the fifth arc-shaped cavity, and the opening direction of the sixth arc-shaped cavity is the same as the opening direction of the fourth arc-shaped cavity.

Preferably, the cavity further includes a fifth cavity, the shape of the fifth cavity is cylindrical, and the fifth cavity includes a first cylindrical cavity, a second cylindrical cavity and a connecting cavity;

The first cylindrical cavity is arranged along the length direction, and one end of the first cylindrical cavity is communicated with the flow channel;

The second cylindrical cavity is disposed along the length direction, and the second cylindrical cavity and the first cylindrical cavity are disposed at relative intervals along the length direction;

One end of the connecting cavity communicates with the other end of the first cylindrical cavity, and the other end of the connecting cavity communicates with the second cylindrical cavity.

Compared with the prior art, the present invention provides a mold for testing the fluidity of a die-casting alloy, which includes a mold body and a sprue, a runner, and a cavity opened on the mold body, and the runner communicates with the sprue. ; The mold cavity at least includes a first mold cavity and a second mold cavity, the first mold cavity and the second mold cavity are respectively communicated with the flow channel, and the shape of the first mold cavity is rectangular , one of a circle shape, a stepped shape, a curved shape, and a cylindrical shape, and the shape of the second cavity is the other of a rectangular shape, a circle shape, a stepped shape, a curved shape, and a cylindrical shape. The fluidity test mold of the die-casting alloy has at least two different shapes of cavities, so that when the liquid alloy is tested for popular properties, at least two different samples can be formed in one test process, which can be more accurate. Effectively test the flow properties and filling properties of alloys.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a partial structural schematic diagram of a fluidity test mold of a die-casting alloy provided by an embodiment;

FIG. 2 is a flowability sample casting produced from the flowability test mold of the die-casting alloy shown in FIG. 1 .

Detailed ways

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application. , not all examples. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

It should be noted that when a component is referred to as being "fixed on", "mounted on" or "disposed on" another component, it can be directly on the other component or indirectly on the other component; Another element is "connected", or an element is referred to as being "connected to" another element, either directly to the other element or indirectly to the other element.

It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the contents disclosed in the specification for the understanding and reading of those who are familiar with this technology, and are not used to limit the conditions that the application can implement. Therefore, it has no technical substantive significance. Any structural modification, proportional relationship change or size adjustment should still fall within the scope of the disclosure in this application, without affecting the effect that the application can produce and the purpose that can be achieved. The technical content must be able to cover the scope.

The present invention provides a fluidity test mold for die-casting alloys, which comprises a mold body, a sprue, a runner and a cavity opened on the die body, the runner communicates with the sprue; the cavity It includes at least a first cavity and a second cavity, the first cavity and the second cavity are respectively communicated with the flow channel, and the shape of the first cavity is a rectangle, a circle, and a step. One of a shape, a curved shape, and a cylindrical shape, and the shape of the second cavity is the other of a rectangular shape, a circle shape, a stepped shape, a curved shape, and a cylindrical shape. The fluidity test mold of the die-casting alloy has at least two different shapes of cavities, so that when the liquid alloy is tested for popular properties, at least two different samples can be formed in one test process, which can be more accurate. The flow properties and mold filling properties of the test alloys.

Please refer to Figure 1 and Figure 2 together. This embodiment provides a fluidity test mold 100 for die-casting alloys, specifically a fluidity test die for die-casting aluminum alloys, the die can accurately test the flowability and filling performance of the alloy, and better evaluate the alloy in engineering Prospects in applications, providing auxiliary support for alloy composition and performance optimization. The fluidity test mold 100 of the die-casting alloy includes a mold body 10 and a sprue, a runner 20 and a cavity 30 opened in the mold body. Wherein, the mold body 10 may include a male mold and a female mold that match each other, and at the same time, the mold body 10 may also be provided with functional components such as thimbles, fixing parts, positioning parts, etc., which are well known to those skilled in the art However, it is not an innovation of the fluidity test mold 100 of the die-casting alloy, and will not be repeated here.

The flow channel 20 communicates with the pouring spout, and the mold cavity 30 includes at least a first mold cavity 31 and a second mold cavity 32, and the first mold cavity 31 and the second mold cavity 32 are respectively connected with the The flow channel 20 communicates. That is to say, there are at least two cavities 30 , and the flow channel 20 is the inlet for the liquid alloy to enter the cavities 30 . Therefore, when the liquid alloy is injected, the liquid alloy will flow into the runner 20 through the pouring port, and then flow into the cavity 30 , and finally condensed to become the fluid sample casting 200 .

The shape of the first cavity 31 is one of a rectangular shape, a circle shape, a stepped shape, a curved shape, and a cylindrical shape. Among them, rectangular means: the overall space of the cavity is a cuboid structure, that is, the cross section of the cavity (the cross section obtained by cutting the mold body at the angle shown in Figure 1) and the longitudinal section (the transverse section shown in Figure 1). The cross-sections obtained after cutting the mold body) are all roughly rectangular, so that when the liquid alloy is formed in this space, a cuboid fluid sample casting 210 will be finally obtained. The revolved shape means that the cavity is centered at a point of the mold body 10 , the cavity of the cavity surrounds the peripheral side of this point, and the cavity is provided with extending in different directions and mutually Connected cavity units. For example, a cavity unit extends in the length direction (or tends to the length direction), and another cavity unit communicated with the cavity unit extends in the width direction (or tends to the width direction), so that when the liquid alloy flows into the cavity, it will Due to the guidance of different cavity units, the liquid alloy flows in different directions when flowing through different cavity units. Therefore, after the liquid alloy is formed in this space, a fluid sample casting 220 that reciprocates around is finally obtained. The stepped shape means that the cavity is divided into multiple (at least two) interconnected cavity units, and the thickness of the cavity units gradually decreases or increases in one direction, so that when the liquid alloy is formed in this space, the final A flowable sample casting 230 of varying thickness is obtained. The curved shape refers to that the cavity is divided into multiple (at least two) interconnected curved structure cavity units, so that when the liquid alloy is formed in this space, a fluid sample casting 240 with a curved shape will be finally obtained. Cylindrical means that at least part of the cavity unit of the cavity has a cylindrical structure, that is, the longitudinal section of at least part of the cavity unit in the cavity is circular, so that when the liquid alloy is formed in this space, the final result will be obtained. A flowable sample casting 250 having an at least partially cylindrical configuration.

It should be noted that the width is the X direction shown in FIG. 1 , the length is the Y direction shown in FIG. 1 , and the thickness is the direction perpendicular to the paper shown in FIG. 1 .

The shape of the second cavity 32 is another one of a rectangular shape, a circle shape, a stepped shape, a curved shape, and a cylindrical shape. That is, the shape of the second cavity 32 is different from the shape of the first cavity 31. If the first cavity 31 is rectangular, the second cavity 32 is revolved or stepped. , one of a curved shape and a cylindrical shape; when the first cavity 31 is a revolving shape, the second cavity 32 is one of a rectangular shape, a stepped shape, a curved shape, a cylindrical shape... .

It can be understood that the fluidity test mold used for testing die-casting alloys in the prior art is usually only provided with a cavity of a single shape, so that the samples obtained in the final test are all samples of a single shape, which cannot accurately measure the flow of liquid alloys. performance and filling performance. In particular, with the advancement of society and the development of science and technology, the shape and structure of the die-casting parts to be manufactured are becoming more and more complex. The test molds in the prior art cannot well and truly reflect the flow properties and mold filling properties of the liquid alloy in the casting process, and there are limitations.

The fluidity test mold 100 for the die-casting alloy provided in this embodiment is provided with at least the first cavity 31 and the second cavity 32 , and the shape of the first cavity 31 is the same as the shape of the first cavity 31 . The shapes of the two cavities 32 are different, so that the final test sample has at least two different shapes, which can more accurately and effectively measure the flow properties and filling properties of the liquid alloy.

Preferably, the shape of the first cavity 31 is a rectangle, and the shape of the second cavity 32 is a revolving shape, so that the test of the flow properties of the liquid alloy can be better achieved.

Preferably, the length of the first cavity 31 is greater than the width of the first cavity 31 .

Preferably, the second cavity 32 includes an inner cavity 321 and a revolving cavity 322, the revolving cavity 322 surrounds the circumference of the inner cavity 321, and one end of the revolving cavity 322 communicates with the inner cavity 321, so The other end of the revolving cavity 322 is communicated with the flow channel 20, so that the flow performance of the liquid alloy in the revolving structure can be better tested.

Preferably, the revolving cavity 322 includes a first cavity 3221 , a second cavity 3222 , a third cavity 3223 , a fourth cavity 3224 , a fifth cavity 3225 , a sixth cavity 3226 , and a seventh cavity 3227 , the eighth cavity 3228 , the ninth cavity 3229 and the tenth cavity 3220 . The first cavity 3221 is disposed along the width direction and communicates with the flow channel 20 . The second cavity 3222 is disposed along the length direction, and one end of the second cavity 3222 communicates with the first cavity 3221 . The third cavity 3223 is disposed along the width direction, one end of the third cavity 3223 communicates with the other end of the second cavity 3222 , and the third cavity 3223 and the first cavity 3221 Located on the same side of the second cavity 3222 (ie, as shown in FIG. 1 , the third cavity 3223 and the first cavity 3221 are both located on the right side of the second cavity 3222 ). The fourth cavity 3224 is disposed along the length direction, one end of the fourth cavity 3224 communicates with the other end of the third cavity 3223 , and the fourth cavity 3224 and the second cavity 3222 Located on the same side of the third cavity 3223 . The fifth cavity 3225 is disposed along the width direction, one end of the fifth cavity 3225 communicates with the other end of the fourth cavity 3224 , and the fifth cavity 3225 and the third cavity 3223 Located on the same side of the fourth cavity 3224 . The sixth cavity 3226 is disposed along the length direction, one end of the sixth cavity 3226 communicates with the other end of the fifth cavity 3225 , and the sixth cavity 3226 and the fourth cavity 3224 Located on the same side of the fifth cavity 3225 . The seventh cavity 3227 is disposed along the width direction, one end of the seventh cavity 3227 communicates with the other end of the sixth cavity 3226 , and the seventh cavity 3227 and the fifth cavity 3225 Located on the same side of the sixth cavity 3226 . The eighth cavity 3228 is disposed along the length direction, one end of the eighth cavity 3228 communicates with the other end of the seventh cavity 3227 , and the eighth cavity 3228 and the sixth cavity 3226 Located on the same side of the seventh cavity 3227 . The ninth cavity 3229 is disposed along the width direction, one end of the ninth cavity 3229 communicates with the other end of the eighth cavity 3228 , and the ninth cavity 3229 and the seventh cavity 3227 Located on the same side of the eighth cavity 3228; the tenth cavity 3220 is arranged along the length direction, one end of the tenth cavity 3220 communicates with the other end of the ninth cavity 3229, the tenth cavity 3220 The other end of the cavity 3220 communicates with the inner cavity 31 . That is, in the present embodiment, the second cavity 32 has a "return" type structure as a whole, so through this structure, the flow performance of the liquid alloy in the complex winding structure can be better tested, and the liquid alloy can be measured more accurately. Flow performance and filling performance.

Preferably, the cavity 30 further includes a third cavity 33, and the shape of the third cavity 33 is stepped. Therefore, it is possible to better test the flow properties of the liquid alloy through the three different shapes of the cavity 30 .

Preferably, the third cavity 33 includes a plurality (at least two) of cavity units 331, and the plurality of cavity units 331 are communicated in sequence along the length direction. From the direction close to the flow channel 20 to the direction away from the flow channel 20 , the thicknesses of the plurality of cavity units 331 gradually decrease. Therefore, the flow properties of the liquid alloy in spaces with different thicknesses can be better tested through the third cavity 33, which further ensures the accuracy of the test. In this embodiment, the number of the cavity units 331 is five. More preferably, from the direction close to the flow channel 20 to the direction away from the flow channel 20 , the widths of the plurality of cavity units 331 gradually increase, so that the third cavity 33 can better test the liquid state. Flow properties of alloys in unequal thickness and unequal width spaces.

Preferably, the mold cavity 30 further includes a fourth mold cavity 34, and the shape of the fourth mold cavity 34 is curved. Therefore, the four different shapes of the cavities 30 can better realize the test of the flow properties of the liquid alloy.

Preferably, the fourth cavity 34 includes a first arc-shaped cavity 341, a second arc-shaped cavity 342, a third arc-shaped cavity 343, a fourth arc-shaped cavity 344, and a fifth arc-shaped cavity arranged in sequence along the length direction. 345 and the sixth arc cavity 346. One end of the first arc-shaped cavity 341 communicates with the flow channel 20 , and the opening of the first arc-shaped cavity 341 faces one side in the width direction (in this embodiment, it faces the left side as shown in FIG. 1 ) ; One end of the second arc-shaped cavity 342 communicates with the other end of the first arc-shaped cavity 341, and the opening of the second arc-shaped cavity 342 faces the other side in the width direction (in this embodiment, 1); one end of the third arc-shaped cavity 343 communicates with the other end of the second arc-shaped cavity 342, and the opening direction of the third arc-shaped cavity 343 is the same as the opening direction of the third arc-shaped cavity 343. The opening direction of an arc-shaped cavity 341 is the same; one end of the fourth arc-shaped cavity 344 communicates with the other end of the third arc-shaped cavity 343, and the opening direction of the fourth arc-shaped cavity 344 is the same as that of the third arc-shaped cavity 344. The opening directions of the two arc-shaped cavities 342 are the same; one end of the fifth arc-shaped cavity 345 communicates with the other end of the fourth arc-shaped cavity 344 , and the opening direction of the fifth arc-shaped cavity 345 is the same as the opening direction of the fifth arc-shaped cavity 345 . The opening directions of the three arc-shaped cavities 343 are the same; one end of the sixth arc-shaped cavity 346 communicates with the other end of the fifth arc-shaped cavity 345 , and the opening direction of the sixth arc-shaped cavity 346 is the same as that of the sixth arc-shaped cavity 346 . The opening directions of the four arc-shaped cavities 344 are the same. That is, in this embodiment, the fourth cavity 34 has a "snake" structure as a whole, so that the flow performance of the liquid alloy in the complex bending structure can be better tested through this structure, and the flow of the liquid alloy can be measured more accurately. performance and filling performance. In this embodiment, the first arc-shaped cavity 341 , the second arc-shaped cavity 342 , the third arc-shaped cavity 343 , the fourth arc-shaped cavity 344 , and the fifth arc-shaped cavity 345 And the sixth arc-shaped cavity 346 is arc-shaped in cross section.

Preferably, the cavity 30 further includes a fifth cavity 35, and the shape of the fifth cavity 35 is cylindrical. The fifth cavity 35 includes a first cylindrical cavity 351 , a second cylindrical cavity 352 and a connecting cavity 353 . The first cylindrical cavity 351 is disposed along the length direction, and one end of the first cylindrical cavity 351 communicates with the flow channel 20; the second cylindrical cavity 352 is disposed along the length direction, and the second cylindrical cavity 352 and the first cylindrical cavity 352 is spaced apart along the length direction; one end of the connecting cavity 353 communicates with the other end of the first cylindrical cavity 352 , and the other end of the connecting cavity 353 is connected to the second cylindrical cavity 352 Connected. Therefore, the flow performance of the liquid alloy in the columnar structure can be better tested through the fifth cavity 35 . In this embodiment, the first cylindrical cavity 351 , the second cylindrical cavity 352 and the connecting cavity 353 are all circular in longitudinal section.

That is to say, in this embodiment, there are five cavities 30 , and the shapes of the five cavities 30 are different from each other. The fluidity test mold 100 of the die-casting alloy provided in this embodiment collectively embodies different cavities in the same mold, so that samples of different shapes can be obtained during testing, and the fluidity and filling properties of the alloy can be accurately and effectively tested. When the sample is obtained, it can be observed which one better characterizes the flow properties and filling properties of the alloy.

The flowability test mold 100 of the die-casting alloy provided in this embodiment can be used to study the comparison of flow properties and mold filling properties under different pouring process parameters and different alloy composition conditions. For example, under the same conditions of pouring process parameters (except temperature) and alloy composition, the difficulty of filling of different runners under different temperature conditions is compared.

Table 3 Comparison of the difficulty of filling different runners under different temperature conditions

The above are only the embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these belong to the present invention. scope of protection.

Claims (10)

1. The fluidity test die for the die-casting alloy is characterized by comprising a die body, a pouring gate, a flow channel and a cavity, wherein the pouring gate, the flow channel and the cavity are arranged on the die body;

the runner is communicated with the pouring gate;

the die cavities at least comprise a first die cavity and a second die cavity, the first die cavity and the second die cavity are respectively communicated with the flow channel, the first die cavity is in one of a rectangular shape, a convoluted shape, a stepped shape, a bent shape and a cylindrical shape, and the second die cavity is in the other of the rectangular shape, the convoluted shape, the stepped shape, the bent shape and the cylindrical shape.

2. The fluidity test die of a die-casting alloy according to claim 1, wherein the first cavity is rectangular in shape and the second cavity is convoluted in shape.

3. The fluidity test die of die casting alloy according to claim 2, wherein the length of the first cavity is larger than the width of the first cavity.

4. The fluidity testing die of die-casting alloy according to claim 2, wherein the second cavity comprises an inner cavity and a winding cavity;

the winding cavity surrounds around inner chamber week side, just winding cavity one end with the inner chamber intercommunication, the winding cavity other end with the runner intercommunication.

5. The fluidity test die of a die-casting alloy according to claim 4, wherein the winding cavity comprises a first cavity, a second cavity, a third cavity, a fourth cavity, a fifth cavity, a sixth cavity, a seventh cavity, an eighth cavity, a ninth cavity and a tenth cavity;

the first cavity is arranged along the width direction and is communicated with the flow channel;

the second cavity is arranged along the length direction, and one end of the second cavity is communicated with the first cavity;

the third cavity is arranged along the width direction, one end of the third cavity is communicated with the other end of the second cavity, and the third cavity and the first cavity are positioned on the same side of the second cavity;

the fourth cavity is arranged along the length direction, one end of the fourth cavity is communicated with the other end of the third cavity, and the fourth cavity and the second cavity are positioned on the same side of the third cavity;

the fifth cavity is arranged along the width direction, one end of the fifth cavity is communicated with the other end of the fourth cavity, and the fifth cavity and the third cavity are positioned on the same side of the fourth cavity;

the sixth cavity is arranged along the length direction, one end of the sixth cavity is communicated with the other end of the fifth cavity, and the sixth cavity and the fourth cavity are positioned on the same side of the fifth cavity;

the seventh cavity is arranged along the width direction, one end of the seventh cavity is communicated with the other end of the sixth cavity, and the seventh cavity and the fifth cavity are positioned on the same side of the sixth cavity;

the eighth cavity is arranged along the length direction, one end of the eighth cavity is communicated with the other end of the seventh cavity, and the eighth cavity and the sixth cavity are positioned on the same side of the seventh cavity;

the ninth cavity is arranged along the width direction, one end of the ninth cavity is communicated with the other end of the eighth cavity, and the ninth cavity and the seventh cavity are positioned on the same side of the eighth cavity;

the tenth cavity is arranged along the length direction, one end of the tenth cavity is communicated with the other end of the ninth cavity, and the other end of the tenth cavity is communicated with the inner cavity.

6. The fluidity test die of a die-casting alloy according to any one of claims 2 to 5, wherein the cavities further comprise a third cavity, the third cavity being stepped in shape.

7. The fluidity test die of a die-casting alloy according to claim 6, wherein the third cavity comprises a plurality of cavity units, the cavity units being sequentially communicated in a length direction;

and the thickness of the cavity units is gradually reduced from the direction close to the flow channel to the direction far away from the flow channel.

8. The fluidity testing mold of a die-casting alloy according to claim 6, wherein the cavities further comprise a fourth cavity, the shape of which is curved.

9. The die for testing the fluidity of the die-casting alloy according to claim 8, wherein the fourth cavity comprises a first arc-shaped cavity, a second arc-shaped cavity, a third arc-shaped cavity, a fourth arc-shaped cavity, a fifth arc-shaped cavity and a sixth arc-shaped cavity which are arranged in sequence along the length direction;

one end of the first arc-shaped cavity is communicated with the flow channel, and the opening of the first arc-shaped cavity faces to one side in the width direction;

one end of the second arc-shaped cavity is communicated with the other end of the first arc-shaped cavity, and the opening of the second arc-shaped cavity faces to the other side in the width direction;

one end of the third arc-shaped cavity is communicated with the other end of the second arc-shaped cavity, and the opening direction of the third arc-shaped cavity is the same as that of the first arc-shaped cavity;

one end of the fourth arc-shaped cavity is communicated with the other end of the third arc-shaped cavity, and the opening direction of the fourth arc-shaped cavity is the same as that of the second arc-shaped cavity;

one end of the fifth arc-shaped cavity is communicated with the other end of the fourth arc-shaped cavity, and the opening direction of the fifth arc-shaped cavity is the same as that of the third arc-shaped cavity;

one end of the sixth arc-shaped cavity is communicated with the other end of the fifth arc-shaped cavity, and the opening direction of the sixth arc-shaped cavity is the same as that of the fourth arc-shaped cavity.

10. The fluidity test die of a die-casting alloy according to claim 6, wherein the cavities further comprise a fifth cavity, the fifth cavity is cylindrical in shape, and the fifth cavity comprises a first cylindrical cavity, a second cylindrical cavity and a connecting cavity;

the first cylindrical cavity is arranged along the length direction, and one end of the first cylindrical cavity is communicated with the flow channel;

the second cylindrical cavity is arranged along the length direction, and the second cylindrical cavity and the first cylindrical cavity are oppositely arranged at intervals along the length direction;

one end of the connecting cavity is communicated with the other end of the first cylindrical cavity, and the other end of the connecting cavity is communicated with the second cylindrical cavity.

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