阅读说明：本技术 一种用于检测挤压压余流速线的摆放架及方法 (Placing frame and method for detecting extrusion residual pressure flow rate line ) 是由 张亚桐 高朋垒 孟庆波 庞鑫 陈长柱 于 2020-12-30 设计创作，主要内容包括：本发明涉及一种用于检测挤压压余流速线的摆放架及方法,其中用于检测挤压压余流速线的摆放架,摆放架用于放置压余,摆放架包括底座和多个等高台,多个等高台共中心轴线设置在底座上,沿垂直远离底座的方向,多个等高台的直径逐渐减小。本发明通过将压余进行切割成多个同心圆环和中心圆柱,经过碱洗处理的压余显现出流速线,并对应摆放在多个等高台上,将压余内部的流速线展示出来,便于技术人员观测压余内部的杂质的流动规律以及流速线的位置,为技术人员准确预测压余厚度,实现铝棒挤压的精确性,减少铝棒的浪费和提高铝棒挤压成型的质量。(The invention relates to a placing frame and a method for detecting an extrusion press residue flow velocity line, wherein the placing frame is used for detecting the extrusion press residue flow velocity line and is used for placing press residues, the placing frame comprises a base and a plurality of equal-height platforms, the equal-height platforms are arranged on the base in a mode of sharing a central axis, and the diameters of the equal-height platforms are gradually reduced along the direction which is vertically far away from the base. According to the invention, the discard is cut into a plurality of concentric rings and a central cylinder, the flow velocity lines of the discard after alkali washing treatment are displayed and correspondingly placed on a plurality of equal-height platforms, and the flow velocity lines in the discard are displayed, so that technicians can conveniently observe the flow rules of impurities in the discard and the positions of the flow velocity lines, the discard thickness is accurately measured for the technicians, the extrusion accuracy of aluminum rods is realized, the waste of the aluminum rods is reduced, and the extrusion forming quality of the aluminum rods is improved.)

1. The utility model provides a put frame for detecting surplus flow velocity line of extrusion, its characterized in that, it is used for placing surplus (200) of extrusion to put frame (100), it includes base (110) and a plurality of equal altitude platform (120) to put frame (100), and is a plurality of equal altitude platform (120) center axis altogether sets up on base (110), keeps away from perpendicularly the direction of base (110), and is a plurality of the diameter of equal altitude platform (120) reduces gradually.

2. The placement frame for detecting the extrusion residual flow rate line according to claim 1, wherein the diameter differences of the adjacent equal-height platforms (120) are equal.

3. The placement frame for detecting the flow rate of the extrusion press residue according to claim 2, wherein the base (110) and the upper surfaces of the plurality of equal-height platforms (120) are provided with positioning blocks (101), and the positioning blocks (101) are used for being matched with positioning grooves (201) of the press residue (200).

4. The shelf for detecting the extrusion residual pressure flow rate line according to claim 3, wherein the base (110) and the positioning grooves (201) on the upper surfaces of the plurality of equal-height platforms (120) between the bottom layer and the secondary top layer are located on the same side of the central axis, and the positioning blocks (101) are in a straight-line structure.

5. The shelf for detecting the extrusion residual pressure flow rate line according to claim 3, wherein the positioning block (101) on the upper surface of the equal-height platform (120) on the top layer is a cross-shaped structure.

6. The shelf for detecting the flow rate line of the extrusion press residue according to claim 1, wherein the height of the equal-height platforms (120) is greater than the thickness of the press residue (200), a plurality of equal-height platforms (120) are provided with a plurality of parallel equal-length lines (121) on the circumferential surface, and the distances between the adjacent equal-length lines (121) are equal.

7. A method for detecting a flow rate line of extrusion press residue (200), which is applied to the shelf for detecting a flow rate line of extrusion press residue of any one of claims 1 to 6, wherein the shelf (100) is used for placing the press residue (200), and the height of the equal-height platform (120) is greater than that of the press residue (200);

the discard (200) is provided with a plurality of concentric rings (210) and a central cylinder (220), and the plurality of concentric rings (210) and the central cylinder are respectively matched with the corresponding equal-height platforms (120); a plurality of said concentric rings (210) and said central cylinder (220) are previously subjected to an alkaline washing treatment to develop a flow velocity profile;

the method comprises the following steps:

acquiring a plurality of images of the concentric rings (210) and the central cylinder (220) placed on the iso-altitude station (120) in a direction directly opposite to the central axis;

measuring the distance from the intersection point of the flow velocity line and a bisector (121) on the circumferential surface of the equal-height table (120) in the image to the upper end surface of the corresponding concentric ring (210);

and according to the size relation of the proportional block (300), converting the actual distance from the intersection point of the flow velocity line and the bisector (121) to the upper end face of the corresponding concentric ring (210).

8. The method of detecting a flow rate line of a squeezed discard (200) of claim 7, wherein the central cylinder (220) has four quarter cylinder structures (221);

the step of acquiring a plurality of images of the concentric ring (210) and the central cylinder (220) placed on the equal-height table (120) along the direction opposite to the central axis is specifically as follows: acquiring a plurality of images of the concentric rings (210) and 1-3 quarter-cylinder structures (221) placed on the equal-height table (120) along a direction opposite to the central axis.

9. The method for detecting a flow velocity line of a press run-out (200) according to claim 7, wherein the step of scaling an actual distance from an intersection point of the flow velocity line and the bisector (121) to an upper end surface of the corresponding concentric ring (210) according to a dimensional relationship of a proportional block (300) further comprises:

and drawing an actual flow velocity curve distribution diagram of the flow velocity curve in the discard (200) according to the coordinate value of the intersection point.

10. The method for detecting a flow rate profile of a pressed discard (200) according to claim 9, wherein said step of plotting said flow rate profile after said step of distributing an actual flow rate profile of said flow rate profile within said discard (200) according to said coordinate values of said intersection point further comprises:

and comparing the actual velocity profile with a simulated velocity profile, and correcting the simulation parameters corresponding to the simulated velocity profile.

Technical Field

The invention relates to the field of extrusion forming of aluminum profiles, in particular to a placing frame and a method for detecting an extrusion press residual flow rate line.

Background

In the later stage of aluminum bar extrusion, impurities such as aluminum oxide on the surface of the aluminum bar enter the residual pressing part along with a certain flow rate difference, the flowing rule of the residual pressing internal impurities and the position of a residual pressing flow rate line are observed, the optimization of the mold design by technicians is facilitated, the proper residual pressing thickness can be guided to the technicians to cut off, and the aluminum bar extrusion forming device has very important significance for improving the aluminum bar extrusion forming quality and reducing the waste of the aluminum bar.

In the prior art, the discard thickness is usually determined by manual experience, so that the accuracy and the reliability are insufficient, the discard thickness is easy to be cut inaccurately, and the product quality is reduced or the material is wasted.

Disclosure of Invention

In order to solve the technical problem, a first aspect of the present invention provides a placement frame for detecting an extrusion press residue flow rate line, the placement frame is used for placing press residues, the placement frame includes a base and a plurality of equal-height platforms, the equal-height platforms are arranged on the base along a common central axis, and the diameters of the equal-height platforms are gradually reduced along a direction perpendicular to and away from the base.

According to the invention, the discard is cut into a plurality of concentric rings and a central cylinder, the flow velocity lines of the discard after alkali washing treatment are displayed and correspondingly placed on a plurality of equal-height platforms, and the flow velocity lines in the discard are displayed, so that technicians can conveniently observe the flow rules of impurities in the discard and the positions of the flow velocity lines, the discard thickness is accurately measured for the technicians, the extrusion accuracy of aluminum rods is realized, the waste of the aluminum rods is reduced, and the extrusion forming quality of the aluminum rods is improved.

Further, the diameter difference between adjacent equal-height platforms is equal.

Furthermore, the base and a plurality of the upper surface of equal altitude platform all are provided with the locating piece, the locating piece be used for with the remaining constant head tank cooperation of pressure.

According to the invention, the positioning block is arranged on the equal-height platform, and the positioning groove is arranged on the discard, so that the limit and the positioning of the discard divided concentric rings and the central cylinder are facilitated, and the dislocation of a plurality of concentric rings and the central cylinder which are arranged on the arranging frame is prevented; on the other hand, the positioning structure is simple, the processing and the manufacturing are convenient, and the cost is low.

Furthermore, the base and the positioning grooves which are located on the upper surfaces of the plurality of equal-height platforms between the bottom layer and the secondary top layer are located on the same side of the central axis, and the positioning blocks are of a straight-line structure.

Further, the positioning blocks positioned on the upper surface of the equal-height table of the top layer are of a cross-shaped structure.

Furthermore, the height of the equal-height platforms is larger than the thickness of the discard, a plurality of parallel bisectors are arranged on the circumferential surface of the equal-height platforms, and the distances between the adjacent bisectors are equal.

According to the invention, the height of the equal-height platform is limited to be larger than the excess thickness, and a plurality of parallel equal division lines are arranged on the circumferential surface of the equal-height platform, so that on one hand, the positions of flow velocity lines on the concentric rings and the central cylinder are convenient to measure; on the other hand, the height of waiting for high platform is greater than the surplus thickness of pressure, can also test the surplus of pressure of different thickness, improves the utilization ratio of putting the frame, practices thrift the cost.

The invention provides a method for detecting an extrusion residual pressure flow rate line, which is applied to the placing frame for detecting the extrusion residual pressure flow rate line, wherein the placing frame is used for placing the residual pressure, and the height of the equal-height platform is greater than that of the residual pressure;

the pressure remainder is provided with a plurality of concentric circular rings and a central cylinder, and the concentric circular rings and the central cylinder are respectively matched with the corresponding equal-height platforms; a plurality of said concentric rings and said central cylinder are previously subjected to a caustic washing treatment to develop a flow velocity profile;

the method comprises the following steps:

acquiring a plurality of images of the concentric rings and the central cylinder which are placed on the equal-height table along the direction opposite to the central axis;

measuring the distance from the intersection point of the flow velocity line and the bisector on the circumferential surface of the equal-height table in the image to the upper end surface of the corresponding concentric ring;

and according to the size relation of the proportional block, converting the actual distance from the intersection point of the flow velocity line and the bisector to the upper end face of the corresponding concentric ring.

According to the invention, the distance from the intersection point of the flow velocity line and the bisector on the circumferential surface of the equal-height table to the upper end surface of the corresponding concentric ring is measured by acquiring the image of the concentric ring and the central cylinder on the equal-height table along the direction opposite to the central axis, and the actual distance from the intersection point of the flow velocity line and the bisector to the upper end surface of the corresponding concentric ring is converted according to the size relation of the proportional block, so that the position of the residual internal flow velocity line is effectively detected.

Further, the central cylinder has four quarter-cylinder structures;

the step of acquiring a plurality of images of the concentric rings and the central cylinder which are placed on the equal-height table along the direction opposite to the central axis is specifically as follows: and acquiring a plurality of images of the concentric rings and 1-3 quarter-cylinder structures which are placed on the equal-height table along the direction opposite to the central axis.

The center cylinder is divided into four quarter cylinder structures, and 1 quarter cylinder structure, 2 quarter cylinder structures or 3 quarter cylinder structures are placed on the equal-height table at the top layer, so that the inner section of the center cylinder is exposed, and technicians can observe the position of a flow velocity line in the center cylinder conveniently.

Further, after the step of converting the actual distance from the intersection point of the flow velocity line and the bisector to the upper end surface of the corresponding concentric ring according to the size of the proportional block, the method further includes:

and drawing an actual flow velocity profile distribution diagram of the flow velocity profile in the discard according to the coordinate value of the intersection point.

Further, after the step of drawing the actual velocity profile of the velocity profile within the discard according to the coordinate value of the intersection point, the method further includes:

and comparing the actual velocity profile with a simulated velocity profile, and correcting the simulation parameters corresponding to the simulated velocity profile.

According to the invention, the actual velocity flow profile is compared with the simulated velocity flow profile, and the simulation parameters corresponding to the simulated velocity flow profile are adjusted and corrected, so that the simulated velocity flow profile is consistent with the actual velocity flow profile, a technician can further optimize the mold design, and the quality of aluminum bar extrusion molding is improved; the guide technical staff selects the appropriate surplus thickness of pressure, reduces the waste of aluminium bar.

Drawings

FIG. 1 is a schematic structural view of a placement frame for detecting an extrusion discard flow rate line according to the present invention;

FIG. 2 is a schematic diagram of the pressure balance structure of the present invention;

FIG. 3 is a schematic view of a placing frame and a discard assembly structure for detecting an extrusion discard flow rate line according to the present invention;

FIG. 4 is a schematic flow chart of a method for detecting a crush allowance flow rate line according to the present invention;

description of reference numerals:

100-placing shelf; 110-a base; 101-a positioning block; 120-equal altitude stage; 121-bisector; 200-pressure residue; 201-positioning grooves; 210-concentric circular rings; 220-a central cylinder; 221-quarter cylinder configuration; 300-proportion blocks;

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures 1 to 4 are described in detail below.

Referring to fig. 1 and 2, the present embodiment provides a shelf for detecting a flow rate line of extrusion press residue, the shelf 100 is used for placing the press residue 200, the shelf 100 includes a base 110 and a plurality of equal-height platforms 120, the equal-height platforms 120 are arranged on the base 110 with a common central axis, and the diameters of the equal-height platforms 120 are gradually reduced along a direction perpendicular to the base 110.

It should be noted that, in the extrusion process of the aluminum bar, at the later stage of the extrusion, impurities such as aluminum oxide and the like enter the tail end of the blank along with a certain flow rate difference, namely enter the inside of the discard 200, and compared with a normal aluminum bar, the discard 200 containing the impurities has different corrosion resistance to alkali washing, and the inside of the discard 200 subjected to alkali washing presents lines with a certain depth. Due to the texture inside the discard 200, it is not observable from the outside of the entire discard 200.

Therefore, in the embodiment, the discard 200 is cut into a plurality of concentric rings 210 and a central cylinder 220, and is correspondingly placed on a plurality of equal-height platforms 120, the discard 200 subjected to alkali washing treatment shows a flow velocity line, and is correspondingly placed on the plurality of equal-height platforms 120, and the flow velocity line inside the discard 200 is shown, so that technicians can conveniently observe the flow rule and the position of the flow velocity line of impurities inside the discard 200, the discard 200 thickness is accurately measured for the technicians, the extrusion accuracy of the aluminum rod is realized, the waste of the aluminum rod is reduced, and the extrusion forming quality of the aluminum rod is improved.

Specifically, referring to fig. 2 and 3, the discard 200 includes a plurality of concentric rings 210 and a central cylinder 220, the plurality of concentric rings 210 and the central cylinder 220 respectively cooperating with the contoured lands 120 of corresponding dimensions.

The plurality of concentric rings 210 are in clearance fit with the corresponding contoured table 120, and the size of the concentric rings 210 is slightly larger than the size of the corresponding contoured table 120.

Preferably, the diameter differences of adjacent equal heights 120 are equal.

Preferably, referring to fig. 1, the upper surfaces of the base 110 and the plurality of equal-height platforms 120 are provided with positioning blocks 101, and the positioning blocks 101 are used for matching with positioning grooves 201 of the discard 200.

Specifically, referring to fig. 2, the surfaces of the concentric ring 210 and the central cylinder 220 are provided with positioning grooves 201, which are respectively matched with the positioning blocks 101 on the corresponding equal-height platforms 120.

Therefore, in the embodiment, the positioning block 101 is arranged on the equal-height platform 120, and the positioning groove 201 is arranged on the discard 200, so that the concentric rings 210 and the central cylinder 220 divided by the discard 200 can be limited and positioned conveniently, and the dislocation of the plurality of concentric rings 210 and the central cylinder 220 placed on the placing frame 100 can be prevented; on the other hand, the positioning structure is simple, the processing and the manufacturing are convenient, and the cost is low.

The width of the positioning block 101 is smaller than the width of the positioning groove 201, the absolute value of the difference between the width of the positioning block 101 and the width of the positioning groove 201 is between 0.03mm and 0.05mm, and preferably, the absolute value of the difference between the width of the positioning block 101 and the width of the positioning groove 201 is 0.04 mm.

The height of the positioning block 101 is less than the depth of the positioning groove 201, the absolute value of the difference between the height of the positioning block 101 and the depth of the positioning groove 201 is between 0.8mm and 1.2mm, and preferably, the absolute value of the difference between the height of the positioning block 101 and the depth of the positioning groove 201 is 1 mm.

Preferably, referring to fig. 1, the positioning grooves 201 of the base 110 and the upper surfaces of the plurality of equal-height platforms 120 between the bottom layer and the secondary top layer are located on the same side of the central axis, the positioning block 101 is in a straight-line structure, and the corresponding positioning groove 201 on the surface of the central ring is in a straight-line structure.

Preferably, referring to fig. 1, the positioning block 101 located on the upper surface of the top-layer contour stage 120 has a cross-shaped structure, and the positioning groove 201 on the surface of the corresponding central cylinder 220 has a cross-shaped structure.

Preferably, referring to fig. 1, the central cylinder 220 comprises four quarter-cylinder structures 221, and the positioning grooves 201 on the surfaces of the four quarter-cylinder structures 221 form positioning grooves 201 in a cross-shaped structure, and are matched with the cross-shaped positioning block 101.

Preferably, referring to fig. 3, the height of the equal-height table 120 is greater than the thickness of the discard 200, a plurality of equal-height tables 120 are provided with a plurality of equal-length lines 121 parallel to each other on the circumferential surface, and the distances between adjacent equal-length lines 121 are equal.

It should be noted that the height of the plateau 120 is at least 3-5mm greater than the thickness of the balance 200.

Therefore, in the embodiment, the height of the equal-height platform 120 is limited to be greater than the thickness of the discard 200, and the plurality of bisectors 121 parallel to each other are arranged on the circumferential surface of the equal-height platform 120, so that on one hand, the positions of the flow velocity lines on the concentric rings 210 and the central cylinder 220 are convenient to measure; on the other hand, the height of the equal-height platform 120 is larger than the thickness of the discard 200, and the discard 200 with different thicknesses can be tested, so that the utilization rate of the placing frame 100 is improved, and the cost is saved.

The embodiment provides a device for detecting an extrusion discard flow velocity line, which comprises a placing frame and a camera (not shown in the figure) for detecting the extrusion discard flow velocity line, wherein the placing frame 100 is used for placing an extrusion discard 200, the extrusion discard 200 comprises a plurality of concentric rings 210 and a central cylinder 220, and the plurality of concentric rings 210 and the central cylinder 220 are respectively and correspondingly placed on a plurality of equal-height tables 120; the camera is used for shooting a plurality of concentric rings 210 and a central cylinder 220 at multiple angles along the direction just opposite to the central axis, and acquiring the relative position of a flow velocity line.

Preferably, the apparatus further includes a scale block 300, the scale block 300 being movably placed on the base 110, the scale block 300 being displayed within a shooting range of the camera.

Referring to fig. 1-4, the present embodiment provides a method for detecting a flow rate line of extrusion press residue, which is applied to the above-mentioned placing rack for detecting a flow rate line of extrusion press residue, the placing rack 100 is used for placing the press residue 200, and the height of the equal-height platform 120 is greater than the height of the press residue 200;

the press cake 200 has a plurality of concentric rings 210 and a central cylinder 220, the plurality of concentric rings 210 and the central cylinder 220 are respectively matched with the corresponding equal-height platforms 120; the plurality of concentric rings 210 and the central cylinder 220 are previously subjected to alkali washing treatment to show a flow velocity profile;

the method comprises the following steps:

s100, acquiring a plurality of images of the concentric circular ring 210 and the central cylinder 220 which are placed on the equal-height platform 120 along the direction opposite to the central axis;

s200, measuring the distance from the intersection point of the flow velocity line in the image and the bisector 121 on the circumferential surface of the contour table 120 to the upper end face of the corresponding concentric ring 210;

and S300, converting the actual distance from the intersection point of the flow velocity line and the bisector 121 to the upper end face of the corresponding concentric ring 210 according to the size relation of the proportional block 300.

Specifically, in the present embodiment, the concentric ring 210 and the central cylinder 220 placed on the equal-height stage 120 are photographed by the camera in four directions of front, back, left and right, which are opposite to the central axis, wherein, in photographing, the scale block 300 is moved by the size of the scale block 300 so that the scale block 300 is located within the visual field range of the camera photographing; the obtained image is led into Nano Measurer software, and the size X of the proportion block 300 in the image is measured₁Measuring the middle map of the imageThe distance y from the intersection point of the medium flow velocity line and the bisector 121 on the circumferential surface of the contour table 120 to the upper end surface of the corresponding concentric ring 210 is determined by the actual dimension X of the proportional block 300₀Converting the actual distance Y from the intersection point of the flow velocity line and the bisector 121 to the upper end surface of the corresponding concentric ring 210:

therefore, in the present embodiment, the effective detection of the position of the flow velocity line inside the discard 200 is realized by acquiring the image of the concentric ring 210 and the central cylinder 220 on the equal-height stage 120 along the dead center axis, measuring the distance from the intersection point of the flow velocity line and the bisector 121 on the circumferential surface of the equal-height stage 120 in the image to the upper end surface of the corresponding concentric ring 210, and converting the actual distance from the intersection point of the flow velocity line and the bisector 121 to the upper end surface of the corresponding concentric ring 210 according to the dimensional relationship of the proportional block 300.

It should be noted that, since the flow velocity line inside the central cylinder 220 is not visible, in order to observe and measure the residual flow velocity line inside the central cylinder 220, the central cylinder 220 needs to be further cut, so that the central cylinder 220 includes a plurality of equally divided structures, and the central cylinder 220 may have two half cylinder structures, three third cylinder structures or four quarter cylinder structures 221, etc.

Preferably, the central cylinder 220 has four quarter-cylinder structures 221;

the steps of acquiring a plurality of images of the concentric ring 210 and the central cylinder 220 placed on the iso-altitude platform 120 along the direction opposite to the central axis are specifically as follows: a plurality of images of the concentric rings 210 and 1-3 quarter-cylinder structures 221 disposed on the iso-elevation 120 in a direction opposite to the central axis are acquired.

Therefore, in the present embodiment, the central cylinder 220 is divided into four quarter-cylinder structures 221, and 1 quarter-cylinder structure 221, 2 quarter-cylinder structures 221 or 3 quarter-cylinder structures 221 are placed on the top-layer contour table 120, so that the inner cross section of the central cylinder 220 is exposed, and a technician can observe the position of the flow velocity line inside the central cylinder 220 conveniently.

Preferably, after the step of converting the actual distance from the intersection point of the flow velocity line and the bisector 121 to the upper end surface of the corresponding concentric ring 210 according to the size of the proportional block 300, the method further comprises:

s400, according to the coordinate value of the intersection point, drawing an actual flow velocity profile distribution diagram of the flow velocity profile in the discard 200.

The coordinate value of the intersection point is determined by the size of the concentric ring 210, the position and angle of the bisector 121, and the actual distance from the intersection point to the upper end surface of the corresponding concentric ring 210, and the actual flow velocity profile in the discard 200 is restored based on the coordinate value of the intersection point.

Preferably, after the step of drawing the actual velocity profile of the velocity profile within the pressure margin 200 according to the coordinate value of the intersection point, the method further comprises:

s500, comparing the actual velocity flow profile with the simulated velocity flow profile, and correcting the simulation parameters corresponding to the simulated velocity flow profile.

It should be noted that HyperXtrude is computer simulation software for a metal extrusion production process, when an aluminum bar is subjected to extrusion simulation, simulation parameters such as a heat transfer coefficient between the aluminum bar and a mold and a friction factor between the aluminum bar and the mold are usually set, a skin of the aluminum bar is subjected to tracking analysis, and the thickness of the aluminum bar is measured by predicting the residual pressure of 200 mm.

Therefore, in the embodiment, the actual velocity flow profile is compared with the simulated velocity flow profile, and the simulation parameters corresponding to the simulated velocity flow profile are adjusted and corrected, so that the simulated velocity flow profile is consistent with the actual velocity flow profile, thereby facilitating technicians to further optimize the mold design and improve the quality of extrusion molding of the aluminum bar; the guide technical staff can select the proper thickness of the discard 200, and the waste of the aluminum bar is reduced.

Taking a concentric ring 210 and a central cylinder 220 placed on the contour table 120 in a direction opposite to the central axisBefore the step of multiple images, the multiple concentric rings 210 and the central cylinder 220 are subjected to alkali washing, specifically: performing alkaline washing on the concentric rings 210 and the central cylinder 220 by using NaOH solution, wherein the first time t of each alkaline washing₁Taking out and washing with clear water, observing whether the concentric ring 210 and the central cylinder 220 present clear velocity flow line lines with certain depth, and if so, stopping alkaline washing; if not, continuing the alkali washing for a second time t₂And taking out and washing with clear water, observing whether the concentric ring 210 and the central cylinder 220 present clear velocity line grains with certain depth, if so, stopping alkali washing, otherwise, repeating alkali washing and repeating observation.

A first time t₁Between 180s-200s, and a second time t₂Between 100s and 150s, preferably for a first time t₁Is 180s, a second time t₂Is 120 s.

Before the plurality of concentric rings 210 and the central cylinder 220 are subjected to the alkali washing treatment, the method further comprises the following steps: performing a second solid solution heat treatment on the plurality of concentric rings 210 and the central cylinder 220, wherein the second solid solution heat treatment comprises: heating the concentric rings 210 and the central cylinder 220 to 530 +/-10 ℃, preserving heat for 1-3h, and then rapidly cooling by water.

The water cooling system is immersion cooling.

Therefore, in the embodiment, by adopting a rapid water cooling mode, the phenomenon that the second phase of the discard 200 is precipitated due to overlong artificial aging time is prevented, so that the coarse second phase falls off to cause corrosion pits, and the observation and measurement of the position of the flow rate line in the discard 200 are influenced.

Before the secondary solid solution heat treatment is performed on the plurality of concentric rings 210 and the central cylinder 220, the method further comprises the following steps:

after extrusion is finished, the discard 200 is taken off along with the die, and after the temperature is cooled to room temperature, the discard 200 is cut off from the die, wherein the cutting mode adopts linear cutting;

the method comprises the following steps of carrying out primary solid-melt heat treatment on the pressed waste 200, wherein the primary solid-melt heat treatment specifically comprises the following steps: heating the pressed residue 200 to 530 +/-10 ℃ and preserving heat for 1-3h, quickly cooling by water, heating to 165 ℃ and preserving heat for 8-10h, and then carrying out air cooling heat treatment;

the discard 200 is cut, cutting the locating groove 201 along any diameter of the surface of the discard 200, and cutting the discard 200 into a plurality of concentric rings 210 and a central cylinder 220.

The discard 200 is cut into a plurality of concentric rings 210 and a central cylinder 220, and is processed by wire cutting or milling.

The cutting of the discard 200 into a plurality of concentric rings 210 and a central cylinder 220 specifically comprises the following steps:

fixing the discard 200 on a linear cutting platform, and fastening the outermost circles of the upper and lower surfaces of the discard 200, wherein the fastening position does not exceed the width of the concentric circular ring 210 of the outermost circle;

the routing program is written, the wire is routed from the position of the positioning groove 201, the wire is arranged from inside to outside, the central cylinder 220 and the concentric circular rings 210 are sequentially cut, preferably, the thickness of the concentric circular rings 210 is consistent, and the thickness of the concentric circular rings 210 is between 5 and 10 mm.

After the cutting step of cutting the discard 200 into a plurality of concentric rings 210 and a central cylinder 220, the method further comprises the steps of:

fixing the central cylinder 220 on the wire cutting platform, and fastening the central cylinder 220;

the central cylinder 220 is cut into four quarter-cylinder structures 221 along two mutually perpendicular diameters, which form an included angle with the positioning slot 201 of the central cylinder 220.

Preferably, the central cylinder 220 is provided with two mutually perpendicular positioning slots 201, and the angle between the two mutually perpendicular diameters and the positioning slot 201 between the two mutually perpendicular diameters is 45 °.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the embodiments, and the scope of the embodiments is, therefore, to be determined only by the appended claims.