CN113481583A - Electrolyte solution and electrolysis method for cobalt-chromium alloy electrolytic corrosion for 3D printing - Google Patents
Electrolyte solution and electrolysis method for cobalt-chromium alloy electrolytic corrosion for 3D printing Download PDFInfo
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Abstract
An electrolyte solution and an electrolysis method for electrolytic corrosion of cobalt-chromium alloy for 3D printing comprise the following steps: the electrolyte solution for the cobalt-chromium alloy electrolytic corrosion for 3D printing comprises the following preparation raw materials in parts by weight: 1 to 36 parts of sodium salt and 100 to 150 parts of water. The method effectively avoids the problems and defects that in the prior art, the cobalt-chromium alloy sample piece for 3D printing is corroded by liquid with extremely high corrosivity, has great danger and inconvenient operation, and has adverse effects on the mind and body of a user, and the waste liquid is treated greatly by combining with other structures and methods.
Description
Technical Field
The invention relates to the technical field of electrolyte solutions and metal additive manufacturing, in particular to an electrolyte solution and an electrolysis method for cobalt-chromium alloy electrolytic corrosion for 3D printing, and particularly relates to an environment-friendly electrolyte solution and an electrolysis method for cobalt-chromium alloy electrolytic corrosion for 3D printing.
Background
Additive Manufacturing (AM) is commonly known as 3D printing, combines computer-aided design, material processing and molding technologies, and is a Manufacturing technology for Manufacturing solid articles by stacking special metal materials, non-metal materials and medical biomaterials layer by layer in modes of extrusion, sintering, melting, photocuring, spraying and the like through a software and numerical control system on the basis of a digital model file. Compared with the traditional processing mode of removing, cutting and assembling raw materials, the method is a manufacturing method through material accumulation from bottom to top, and is from top to bottom. This enables the manufacture of complex structural components that were previously constrained by conventional manufacturing methods and were not possible. With the rapid development of metal additive manufacturing technology, the 3D printing process research is more and more focused, and a simple process-use performance mode is converted into a systematic process-microstructure-material performance-use performance research mode. In the process, the influence of process parameters on the microstructure is very important, which not only includes the condition of internal defects of the 3D printed part of the metal material, but also includes the research on microstructures such as a melting channel, grain size and the like, and the microstructure is related to the corrosion of a metal sample. The influence of the process parameters on the melting channel is particularly large, so that the purpose of analyzing the appearance of the melting channel and searching for a proper corrosion mode and a proper corrosion solution is very important.
The existing cobalt-chromium alloy sample piece is corroded by a chemical corrosion method, and the used corrosive liquid is strong corrosive acid or strong oxidizing liquid, such as concentrated hydrochloric acid, concentrated sulfuric acid, concentrated nitric acid and H2O2Even aqua regia, a very corrosive liquid. On the one hand, the corrosive liquid has great danger and inconvenient operation, and has adverse effects on the mind and body of a user, and the treatment of the waste liquid is also a great problem. In the present day advocating "green development", "healthy development", it is crucial to find a green, environment-friendly, healthy, safe electrolysis mode and electrolyte for 3D printing of cobalt-chromium alloy.
Disclosure of Invention
In order to solve the problems, the invention provides a cobalt-chromium alloy electrolytic corrosion for 3D printingThe electrolyte solution and the method effectively avoid the problems that in the prior art, the cobalt-chromium alloy sample piece for 3D printing adopts liquid with extremely high corrosivity, has great danger and inconvenient operation, and has adverse effects on the mind and body of a user，And the treatment of waste liquid is also a great problem and defect.
In order to overcome the defects in the prior art, the invention provides a solution of an electrolyte solution and an electrolysis method for 3D printing of cobalt-chromium alloy electrolytic corrosion, which comprises the following specific steps:
an electrolyte solution for cobalt-chromium alloy electrolytic corrosion for 3D printing, comprising:
the electrolyte solution for the cobalt-chromium alloy electrolytic corrosion for 3D printing comprises the following preparation raw materials in parts by weight: 1 to 36 parts of sodium salt and 100 to 150 parts of water.
Further, the sodium salt is one or a mixture of more of sodium chloride, sodium carbonate, sodium bicarbonate, sodium sulfate, sodium thiosulfate, sodium nitrate and sodium fluoride in any proportion.
Further, the sodium salt is sodium chloride, and the sodium chloride comprises various types of common salt, industrial sodium chloride or crude salt;
the weight ratio of the sodium chloride to the water is 1 (3.8-150).
Further, the preparation method of the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing comprises the following steps: and (2) putting the weighed sodium salt with the weight part of 1-36 parts into a beaker filled with water with the weight part of 100-150 parts, and manually and uniformly stirring at room temperature until the sodium salt is fully dissolved to obtain the electrolyte solution serving as the electrolyte.
Further, the electrolytic method and electrolytic solution can also be used for grain boundary corrosion to analyze information such as grain size of 3D printed cobalt chromium alloy.
An electrolytic method of an electrolyte solution for electrolytic corrosion of cobalt-chromium alloy for 3D printing, comprising:
adding electrolyte into a beaker or an electrolytic bath, then putting the additive manufacturing cobalt-chromium metal workpiece connected with a direct current power supply into the electrolyte, wherein the electrolytic voltage is 1V-36V, the electrolytic time is 3 seconds-300 seconds, taking out the workpiece after electrolysis as the additive manufacturing cobalt-chromium metal workpiece for 3D printing of the cobalt-chromium alloy workpiece, and finishing electrolysis.
The electrolytic cell comprises: the electrolytic bath comprises an air flow channel 2, an exhaust hood 3, an electrolytic bath body 4, a cuboid channel 5 with two through ends, a protective block 6, a disc spring 7, an electrolyte outlet 8, a lower block 9, a support table 10, an electrolyte channel 21, a cavity channel 22, a sieve plate 23, a liquid feeding hole 24, a first plastic block 25, a coupling column 26, a second plastic block 27, a liquid discharging hole 28, an opening 29, a guide port 30 and a protrusion 31, wherein the exhaust hood 3 is arranged at the lower part of the air flow channel 2, the electrolytic bath body 4 is arranged at the lower part of the exhaust hood 3, the cuboid channel 5 with two through ends is fixedly connected to the outer surface of the electrolytic bath body 4, the guide port 30 is arranged inside the two through ends of the cuboid channel 5, the protrusion 31 is rotatably connected inside the guide port 30, the protective block 6 is fixedly connected to one end of the protrusion 31, which is far away from the vertical center line of the electrolytic bath body 4, a disc spring 7 is arranged at one end of the protective block 6 close to the vertical central line of the electrolytic bath body 4, a connecting column 26 is welded at one end of the disc spring 7 close to the vertical central line of the electrolytic bath body 4, a liquid discharge hole 28 is arranged on the outer surface of the upper part of the electrolytic bath body 4, in addition, a second plastic block 27, an opening 29 and a first plastic block 25 are sequentially welded on the inner surface of the electrolytic cell body 4 from high to low, a lower block 9 is fixedly connected on the lower part of the electrolytic cell body 4, an electrolyte outlet 8 is arranged in the middle of the lower block 9, a support table 10 is arranged below the lower block 9, in addition, an electrolyte channel 21 is arranged at the middle of the support table 10, a cavity channel 22 is arranged at the middle of the electrolyte channel 21, in addition, liquid feeding holes 24 are formed at both ends of the electrolyte passage 21, and sieve plates 23 are glued to the inner surfaces of the liquid feeding holes 24.
The vertical central lines of the airflow channel 2 and the exhaust hood 3 are consistent, in addition, the airflow channel 2 is communicated with the exhaust hood 3, and the airflow channel 2 is arranged at the upper part of the exhaust hood 3, so that the vertical lines between the airflow channel 2 and the exhaust hood 3 are in one-to-one correspondence.
The projection 31 is fixedly connected with the protection block 6, the projection 31 forms a moving framework between the guide opening 30 and the rectangular parallelepiped channel 5 with two through ends, the projection 31 fixedly connected with the head part of the protection block 6 is embedded in the guide opening 30 in the rectangular parallelepiped channel 5 with two through ends and can move, and the projection 31 of the T-shaped framework is arranged in the guide opening 30 of the T-shaped framework.
The projections 31 are arranged in a mirror image mode aiming at the middle points of the protection blocks 6, in addition, the protection blocks 6 and the projections 31 are arranged in a mirror image mode aiming at the middle points of the rectangular channel 5 with two through ends, the projections 31 are fixedly connected to the upper portion and the lower portion of the protection blocks 6, in addition, the protection blocks 6 fixedly connected with the projections 31 are arranged at the two ends of the rectangular channel 5 with two through ends, and therefore the protection blocks 6 are used, the protection effect on the electrolytic cell body 4 is achieved, and the damage to the outer surface of the electrolytic cell body 4 is prevented.
The protection block 6 forms a telescopic framework between the disc spring 7 and the connecting column 26, the connecting column 26 is connected with the rectangular parallelepiped channel 5 with two through ends in a welding way, and the protection block 6 is connected with the connecting column 26 with two through rectangular parallelepiped channel 5 head ends through the disc spring 7.
The horizontal center lines of the sieve plate 23 and the liquid conveying holes 24 are consistent, and in addition, the sieve plate 23 and the liquid conveying holes 24 are arranged in a mirror image mode aiming at the middle points of the electrolyte channels 21.
The cavities 22 are arranged at equal intervals and are arranged in the middle of the electrolyte channel 21, in addition, the vertical center lines of the electrolyte channel 21 and the support table 10 are consistent, and the cavities 22 are arranged in the middle of the electrolyte channel 21.
The first plastic block 25 and the second plastic block 27 have the same shape and size, the opening 29 and the electrolytic cell body 4 are welded, and the second plastic block 27 and the first plastic block 25 are respectively placed in the opening 29 to be subjected to additive manufacturing on the upper part and the lower part of the cobalt-chromium metal workpiece.
The invention has the beneficial effects that:
the raw material sodium salt, especially sodium chloride, is the most common substance, is easy to buy and has low price compared with other salts or corrosive acids, and the electrolyte is safe and reliable, and does not cause the problems of environmental pollution and the like. In the physical test, the electrolyte is simple and convenient to prepare. In solid electrolysis, electricity is foundThe larger the pressure, the shorter the electrolysis time; the higher the concentration, the shorter the electrolysis time. Effectively avoids the problems that the cobalt-chromium metal sample piece for 3D printing in the prior art is corroded by liquid with extremely strong corrosivity, has great danger and inconvenient operation, and has adverse effects on the mind and body of a user，And the treatment of waste liquid is also a great problem and defect.
Drawings
Fig. 1 shows the effect of applying example 1 of the present application to 3D printing of cobalt-chromium alloy electrolytic corrosion, a polished view before 3D printing of cobalt-chromium alloy electrolytic corrosion, and a low-power view and a high-power view after electrolytic corrosion.
FIG. 2 is a graph showing the effects of cobalt-chromium alloy electrolytic corrosion in 3D printing of example 2, wherein low concentration (concentration of physiological saline solution of amphibians) is shown as the low-power graph and the high-power graph after electrolytic corrosion is performed for a shorter time in the same manner as in example 1 under the conditions of raw material preparation and higher voltage.
Fig. 3 is a low-power graph and a high-power graph of the cobalt-chromium alloy electrolytic corrosion effect obtained by using the cobalt-chromium alloy electrolytic corrosion in 3D printing in example 3 of the present application, which shows the electrolytic corrosion effect in a shorter time than that in example 1 under the same voltage and at a higher concentration.
Fig. 4 is a low-power graph and a high-power graph of the cobalt-chromium alloy obtained by using the electrolytic etching of the cobalt-chromium alloy in 3D printing in the same concentration and at a higher voltage as in example 3 according to example 4.
Fig. 5 shows the effect of electrolytic etching of cobalt-chromium alloy by using example 5 of the present application for 3D printing, and a low-power graph and a high-power graph after electrolytic etching with a shorter time under the saturation concentration and high voltage.
Fig. 6 is a flowchart of an electrolytic method of an electrolytic solution for cobalt-chromium alloy electrolytic corrosion for 3D printing according to the present invention.
FIG. 7 is an overall architecture diagram of the electrolytic cell of the present invention.
FIG. 8 is a downward partial perspective view of the electrolytic cell of the present invention.
Fig. 9 is a schematic view at Z of fig. 7.
Detailed Description
The invention will be further described with reference to the following figures and examples.
As shown in fig. 1 to 9, an electrolyte solution for cobalt-chromium alloy electrolytic etching for 3D printing includes: the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing is a sodium chloride solution, the sodium chloride is an inorganic ionic compound, the source of the sodium chloride is mainly seawater, the stability is good, the sodium chloride is easily soluble in water and is a main component of salt, the water solution is neutral, and the electrolyte solution is used for preparing physiological saline in medical treatment and can be used for seasonings in life. Compared with other salts or corrosive acids, the electrolyte taking sodium chloride as the main component is easy to buy, has low price, is safe and reliable, and cannot cause the problems of environmental pollution and the like. The electrolyte solution for the cobalt-chromium alloy electrolytic corrosion for 3D printing comprises the following preparation raw materials in parts by weight: 1 to 36 parts of sodium salt and 100 to 150 parts of water, if the sodium salt is sodium chloride, the concentration of the mixture of 1 to 36 parts of sodium salt and 100 to 150 parts of water is 0.67 percent of the concentration of the normal saline to 26.47 percent of the concentration of the saturated solution. The sodium salt is one or more of sodium chloride, sodium carbonate, sodium bicarbonate, sodium sulfate, sodium thiosulfate, sodium nitrate and sodium fluoride which are mixed in any proportion. The sodium salt is sodium chloride which comprises main components in various types of common salt, industrial sodium chloride or crude salt and the like; the weight ratio of the sodium chloride to the water is 1 (3.8-150). The preparation method of the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing comprises the following steps: the weighed sodium salt such as sodium chloride (table salt) with the weight portion of 1 to 36 parts is put into a beaker filled with water with the weight portion of 100 to 150 parts, and the mixture is evenly stirred at room temperature manually until the sodium salt is fully dissolved, thus obtaining the electrolyte solution as the electrolyte. The electrolytic method and electrolytic solution can also be used for grain boundary corrosion to analyze such information as grain size of 3D printed cobalt chromium alloy.
The electrolytic method of the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing comprises the following steps:
adding electrolyte into a beaker or an electrolytic bath, then putting the additive manufacturing cobalt-chromium metal workpiece connected with a direct current power supply into the electrolyte, wherein the electrolytic voltage is 1V-36V (human body safety voltage), the electrolytic time is 3 seconds-300 seconds, taking out the workpiece after electrolysis as the additive manufacturing cobalt-chromium metal workpiece for 3D printing of the cobalt-chromium alloy workpiece, and finishing electrolysis.
Example 1
Embodiment 1 provides an electrolyte solution for cobalt-chromium alloy electrolytic corrosion for 3D printing, and the electrolyte solution for cobalt-chromium alloy electrolytic corrosion for 3D printing is prepared from the following raw materials in parts by weight: 1 part of sodium salt and l49 parts of water, namely the concentration of the sodium salt is 0.67 percent (the concentration of physiological saline of amphibians)
The sodium salt is sodium chloride.
The water is common drinking water; the common drinking water is tap water.
The embodiment also provides a preparation method of the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing, which comprises the following steps: and (3) placing the sodium salt into a beaker filled with water, and uniformly stirring the sodium salt by using a glass rod at room temperature until the sodium salt is fully dissolved to obtain the electrolyte.
The embodiment also provides an electrolysis method of the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing, which comprises the following steps: and (3) placing the electrolyte into a beaker, then placing the 3D printed cobalt-chromium alloy workpiece connected with a direct-current power supply into the electrolyte, taking out the workpiece when the electrolysis voltage is 3V and the electrolysis time is 120 seconds, and finishing electrolysis.
The 3D printed cobalt-chromium alloy workpiece is made of cobalt-chromium alloy powder CoCrW material, and effect diagrams before and after electrolysis are shown in figure 1.
Example 2
The sodium salt is sodium chloride.
The water is common drinking water; the common drinking water is tap water.
The embodiment of the present invention further provides a preparation method of the electrolyte solution for cobalt-chromium alloy electrolytic corrosion for 3D printing, including the following steps: and (3) placing the sodium salt into a beaker filled with water, and uniformly stirring the sodium salt by using a glass rod at room temperature until the sodium salt is fully dissolved to obtain the electrolyte.
The embodiment also provides an electrolytic method of the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing, which comprises the following steps: and (3) placing the electrolyte into a beaker, then placing the 3D printed cobalt-chromium alloy workpiece connected with a direct-current power supply into the electrolyte, taking out the workpiece when the electrolysis voltage is 10V and the electrolysis time is 30 seconds, and finishing electrolysis.
The 3D printed cobalt-chromium alloy workpiece is made of cobalt-chromium alloy powder CoCrW material, and the effect diagrams before and after electrolysis are shown in figure 2.
Example 3
The sodium salt is sodium chloride.
The water is common drinking water; the common drinking water is tap water.
The embodiment of the present invention further provides a preparation method of the electrolyte solution for cobalt-chromium alloy electrolytic corrosion for 3D printing, including the following steps: and (3) placing the sodium salt into a beaker filled with water, and uniformly stirring the sodium salt by using a glass rod at room temperature until the sodium salt is fully dissolved to obtain the electrolyte.
The embodiment also provides an electrolysis method of the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing, which comprises the following steps: and (3) placing the electrolyte into a beaker, then placing the 3D printed cobalt-chromium alloy workpiece connected with a direct-current power supply into the electrolyte, taking out the workpiece when the electrolysis voltage is 3V and the electrolysis time is 30 seconds, and finishing electrolysis.
The 3D printed cobalt-chromium alloy workpiece is made of cobalt-chromium alloy powder CoCrW material, and the effect diagram before electrolysis is shown in figure 3.
Example 4
The sodium salt is sodium chloride.
The water is common drinking water; the common drinking water is tap water.
The embodiment also provides a preparation method of the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing, which comprises the following steps: and (3) placing the sodium salt into a beaker filled with water, and uniformly stirring the sodium salt by using a glass rod at room temperature until the sodium salt is fully dissolved to obtain the electrolyte.
The embodiment also provides an electrolysis method of the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing, which comprises the following steps: and (3) placing the electrolyte into a beaker, then placing the 3D printed cobalt-chromium alloy workpiece connected with a direct-current power supply into the electrolyte, taking out the workpiece when the electrolysis voltage is 25V and the electrolysis time is 5 seconds, and finishing electrolysis.
The 3D printed cobalt-chromium alloy workpiece is made of cobalt-chromium alloy powder CoCrW material, and the effect diagrams before and after electrolysis are shown in FIG. 4.
Example 5
The sodium salt is sodium chloride.
The water is common drinking water; the common drinking water is tap water.
The embodiment also provides a preparation method of the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing, which comprises the following steps: and (3) placing the sodium salt into a beaker filled with water, and uniformly stirring the sodium salt by using a glass rod at room temperature until the sodium salt is fully dissolved to obtain the electrolyte.
The embodiment also provides an electrolysis method of the electrolyte solution for electrolytic corrosion of the cobalt-chromium alloy for 3D printing, which comprises the following steps: and (3) placing the electrolyte into a beaker, then placing the 3D printed cobalt-chromium alloy workpiece connected with a direct-current power supply into the electrolyte, taking out the workpiece when the electrolytic voltage is 36V and the electrolytic time is 3 seconds, and finishing electrolysis.
The 3D printed cobalt-chromium alloy workpiece is made of cobalt-chromium alloy powder CoCrW material, and the effect diagrams before and after electrolysis are shown in FIG. 5.
In the concrete use, because before adding electrolyte into the electrolysis trough, electrolyte often can receive stained, can be unfavorable for the application of electrolysis trough like this, the electrolysis trough still has the not good problem of anti-shake performance in addition.
In an improvement, the electrolytic cell comprises: the electrolytic bath comprises an air flow channel 2, an exhaust hood 3, an electrolytic bath body 4, a cuboid channel 5 with two through ends, a protective block 6, a disc spring 7, an electrolyte outlet 8, a lower block 9, a support table 10, an electrolyte channel 21, a cavity channel 22, a sieve plate 23, a liquid feeding hole 24, a first plastic block 25, a coupling column 26, a second plastic block 27, a liquid discharging hole 28, an opening 29, a guide port 30 and a protrusion 31, wherein the exhaust hood 3 is arranged at the lower part of the air flow channel 2, the electrolytic bath body 4 is arranged at the lower part of the exhaust hood 3, the cuboid channel 5 with two through ends is fixedly connected to the outer surface of the electrolytic bath body 4, the guide port 30 is arranged inside the two through ends of the cuboid channel 5, the protrusion 31 is rotatably connected inside the guide port 30, the protective block 6 is fixedly connected to one end of the protrusion 31, which is far away from the vertical center line of the electrolytic bath body 4, a disc spring 7 is arranged at one end of the protective block 6 close to the vertical central line of the electrolytic bath body 4, a connecting column 26 is welded at one end of the disc spring 7 close to the vertical central line of the electrolytic bath body 4, a liquid discharge hole 28 is arranged on the outer surface of the upper part of the electrolytic bath body 4, in addition, a second plastic block 27, an opening 29 and a first plastic block 25 are sequentially welded on the inner surface of the electrolytic cell body 4 from high to low, a lower block 9 is fixedly connected on the lower part of the electrolytic cell body 4, an electrolyte outlet 8 is arranged in the middle of the lower block 9, a support table 10 is arranged below the lower block 9, in addition, an electrolyte channel 21 is arranged at the middle of the support table 10, a cavity channel 22 is arranged at the middle of the electrolyte channel 21, in addition, liquid feeding holes 24 are formed at both ends of the electrolyte passage 21, and sieve plates 23 are glued to the inner surfaces of the liquid feeding holes 24.
The vertical central lines of the airflow channel 2 and the exhaust hood 3 are consistent, in addition, the airflow channel 2 is communicated with the exhaust hood 3, the airflow channel 2 is arranged at the upper part of the exhaust hood 3, the vertical lines between the airflow channel 2 and the exhaust hood 3 correspond to each other one by one, and the normal operation of the exhaust hood 3 is favorably ensured.
The protrusion 31 is fixedly connected with the protection block 6, in addition, a movable framework is formed between the protrusion 31 and the rectangular channel 5 with two through ends through the guide port 30, the protrusion 31 fixedly connected with the head of the protection block 6 is embedded and can move in the guide port 30 in the rectangular channel 5 with two through ends, a motion interval is favorably provided for the flexibility of the disc spring 7, in addition, the protrusion 31 with the T-square framework is arranged in the guide port 30 with the T-square framework, and the separation phenomenon is avoided.
The projections 31 are arranged in a mirror image mode aiming at the middle points of the protection blocks 6, in addition, the protection blocks 6 and the projections 31 are arranged in a mirror image mode aiming at the middle points of the rectangular channel 5 with two through ends, the projections 31 are fixedly connected to the upper portion and the lower portion of the protection blocks 6, in addition, the protection blocks 6 fixedly connected with the projections 31 are arranged at the two ends of the rectangular channel 5 with two through ends, and therefore the protection blocks 6 are used, the protection effect on the electrolytic cell body 4 is achieved, and the damage to the outer surface of the electrolytic cell body 4 is prevented.
The protective block 6 forms a telescopic framework through the disc spring 7 and the connecting column 26, the connecting column 26 is connected with the rectangular parallelepiped channel 5 with two through ends in a welding way, the protective block 6 is connected with the connecting column 26 with two through rectangular parallelepiped channel 5 heads through the disc spring 7, and the disc spring 7 has the elasticity, so the anti-shake effect can be achieved on the acting force on the protective block 6, and the protection on the outer surface of the electrolytic bath body 4 is achieved.
The horizontal center lines of the sieve plate 23 and the liquid feeding holes 24 are consistent, in addition, the sieve plate 23 and the liquid feeding holes 24 are arranged in a mirror image mode aiming at the middle point of the electrolyte channel 21, the sieve plate 23 is placed in the liquid feeding holes 24, the purpose of removing particulate pollutants from flowing electrolyte can be achieved, the electrolyte with the particulate pollutants is prevented from being fed into the electrolytic cell, and therefore the normal application of the electrolytic cell is not facilitated.
The cavity channels 22 are arranged at equal intervals and are arranged in the middle of the electrolyte channel 21, in addition, the vertical central lines of the electrolyte channel 21 and the support table 10 are consistent, the cavity channels 22 are arranged in the middle of the electrolyte channel 21, the water body is favorably ensured to be conveyed to the electrolyte channel 21, the water body is conveyed to the inside of an electrolytic bath through the cavity channels 22, and after direct current power-on is carried out on a cobalt-chromium metal workpiece manufactured by material increase, electrolytic operation is formed.
The first plastic block 25 and the second plastic block 27 are identical in appearance size, the opening 29 and the electrolytic cell body 4 are welded, and the second plastic block 27 and the first plastic block 25 are respectively placed in the opening 29 to be protected from being corroded at the periphery of the cobalt-chromium metal workpiece.
Therefore, firstly, the additive manufacturing cobalt chromium metal workpiece is stretched into the opening 29 welded on the inner surface of the electrolytic bath body 4 to achieve the limiting effect on the additive manufacturing cobalt chromium metal workpiece, then the sieve plates 23 are placed in the liquid feeding holes 24 at two ends of the electrolyte channel 21 to enable the sieve plates 23 to achieve the effect of removing particulate dirt on the passing electrolyte, the electrolyte with the particulate dirt is prevented from reaching the inside of the electrolytic bath, the normal use of the electrolytic bath is not facilitated, then the electrolyte reaches the inside of the supporting table 10 through the electrolyte outlet 8 arranged on the outer surface of the electrolyte channel 21, in addition, the electrolyte reaches the inside of the electrolytic bath body 4 through the electrolyte outlet 8 arranged in the lower block 9 on the upper part of the supporting table 10 and is sprayed upwards, and because the plastic blocks 27 and the plastic blocks 25 are arranged on the upper part and the lower part of the additive manufacturing cobalt chromium metal workpiece, the periphery of the additive manufacturing cobalt chromium metal workpiece can be protected from being corroded, after the second plastic block 27 is immersed by the electrolyte, the cobalt chromium metal workpiece and the first plastic block 25 are manufactured in an additive mode, the electrolyte passes through the liquid discharge hole 28, then the cobalt chromium metal workpiece manufactured in an additive mode is electrified, after the electrification, the electrolyte passes through the process, the electrolysis is executed, if the protective block 6 on the outer surface of the electrolytic bath body 4 collides in the period, the disc spring 7 between the protective block 6 and the connecting column 26 achieves the telescopic function, the anti-shaking purpose can be achieved for the acting force from the protective block 6, the protective performance on the outer surface of the electrolytic bath body 4 is achieved, when the disc spring 7 is telescopic, the protrusion 31 fixedly connected to the head of the protective block 6 is embedded in the guide port 30 which can move in the cuboid channel 5 with two through ends, so that the movement interval can be provided for the flexibility of the disc spring 7, and at the moment, the protrusion 31 of the T-square framework moves in the guide port 30 of the T-square framework, it is possible to achieve prevention of occurrence of a separation state, and thus achieve electrolysis.
The air flow channels are arranged at the upper part of the exhaust hood, so that the vertical lines between the air flow channels and the exhaust hood correspond to each other one by one, the normal operation of the exhaust hood is favorably ensured, the sieve plate is placed in the liquid conveying hole, the purpose of removing particulate matters and dirt from passing electrolyte can be achieved, the electrolyte with impurities is prevented from reaching the inside of the electrolytic cell, and the normal operation of the electrolytic cell is not favorably realized; the protrusion fixedly connected with the head of the protection block is embedded and can move in the guide port in the cuboid channel with two through ends, which is beneficial to providing a moving interval for the flexibility of the disc spring, and the protrusion of the T-square structure is arranged in the guide port of the T-square structure, so that the separation state can be avoided, the protrusion is fixedly connected with the upper part and the lower part of the protection block, in addition, the protection blocks fixedly connected with the protrusions are arranged at the two ends of the rectangular channel with the two ends communicated, so that the protection blocks are utilized to achieve the protection effect on the electrolytic bath body, prevent the damage to the outer surface of the electrolytic bath body and connect the protection blocks and the connecting columns of the rectangular channel head with the two ends communicated with each other through the disc springs, because the disc springs have elasticity, therefore, the anti-shaking effect can be achieved on the acting force suffered by the protection block, and the purpose of protecting the outer surface of the electrolytic cell body is achieved; the cavity channel is arranged in the middle of the electrolyte channel, so that water can reach the electrolyte channel and is conveyed into the device through the cavity channel, after the cobalt-chromium metal workpiece is subjected to direct current, an electrolysis effect is formed, the plastic block II and the plastic block I are respectively arranged at the upper part and the lower part of the cobalt-chromium metal workpiece in the additive manufacturing process in the opening, and therefore the periphery of the cobalt-chromium metal workpiece in the additive manufacturing process is protected from being corroded.
The present invention has been described above in an illustrative manner by way of embodiments, and it will be apparent to those skilled in the art that the present disclosure is not limited to the embodiments described above, and various changes, modifications and substitutions can be made without departing from the scope of the present invention.
Claims (10)
1. An electrolyte solution for electrolytic corrosion of cobalt-chromium alloy for 3D printing, comprising:
the electrolyte solution for the cobalt-chromium alloy electrolytic corrosion for 3D printing comprises the following preparation raw materials in parts by weight: 1 to 36 parts of sodium salt and 100 to 150 parts of water.
2. The electrolyte solution for 3D printing cobalt-chromium alloy electrolytic corrosion according to claim 1, characterized in that the sodium salt is a mixture of one or more of sodium chloride, sodium carbonate, sodium bicarbonate, sodium sulfate, sodium thiosulfate, sodium nitrate and sodium fluoride in any proportion.
3. The electrolytic solution for electrolytic corrosion of cobalt-chromium alloy for 3D printing according to claim 1, wherein the sodium salt is sodium chloride, and the sodium chloride comprises various types of common salt, industrial sodium chloride or crude salt;
the weight ratio of the sodium chloride to the water is 1 (3.8-150).
4. The electrolyte solution for cobalt-chromium alloy electrolytic corrosion for 3D printing according to claim 1, wherein the preparation method of the electrolyte solution for cobalt-chromium alloy electrolytic corrosion for 3D printing comprises: and (2) putting the weighed sodium salt with the weight part of 1-36 parts into a beaker filled with water with the weight part of 100-150 parts, and manually and uniformly stirring at room temperature until the sodium salt is fully dissolved to obtain the electrolyte solution serving as the electrolyte.
5. The electrolyte solution for cobalt-chromium alloy electrolytic corrosion for 3D printing according to claim 4, wherein the electrolysis method and the electrolyte solution can be used for electrolytic corrosion of 3D printing cobalt-chromium alloy melting channel and can also be used for grain boundary corrosion to analyze information such as grain size of 3D printing cobalt-chromium alloy.
6. An electrolytic method of an electrolyte solution for electrolytic corrosion of cobalt-chromium alloy for 3D printing is characterized by comprising the following steps:
adding electrolyte into a beaker or an electrolytic bath, then putting the additive manufacturing cobalt-chromium metal workpiece connected with a direct current power supply into the electrolyte, wherein the electrolytic voltage is 1V-36V, the electrolytic time is 3 seconds-300 seconds, taking out the workpiece after electrolysis as the additive manufacturing cobalt-chromium metal workpiece for 3D printing of the cobalt-chromium alloy workpiece, and finishing electrolysis.
7. The method of electrolyzing an electrolyte solution corroded by cobalt-chromium alloy for 3D printing according to claim 6, wherein the electrolytic bath comprises: the electrolytic cell comprises an air flow channel, an exhaust hood, an electrolytic cell body, a cuboid channel with two through ends, a protective block, a disc spring, an electrolyte outlet, a lower block, a supporting table, an electrolyte channel, a cavity channel, a sieve plate, a liquid feeding hole, a first plastic block, a connecting column, a second plastic block, a liquid discharging hole, an opening, a guide port and a protrusion, wherein the exhaust hood 3 is arranged at the lower part of the air flow channel, the electrolytic cell body is arranged at the lower part of the exhaust hood, the cuboid channel with two through ends is fixedly connected to the outer surface of the electrolytic cell body, the guide port is arranged in each of the two through ends of the cuboid channel with two through ends, the protrusion is rotatably connected to the inner side of the guide port, the protective block is fixedly connected to one end of the protrusion far away from the vertical center line of the electrolytic cell body, the disc spring is arranged at one end of the protective block close to the vertical center line of the electrolytic cell body, the connecting column is welded to one end of the disc spring close to the vertical center line of the electrolytic cell body, the outer surface of the upper part of the electrolytic cell body is provided with a liquid discharge hole, in addition, the inner surface of the electrolytic cell body is sequentially welded with a plastic block II, an opening and the plastic block I from high to low, the lower part of the electrolytic cell body is fixedly connected with a lower block, in addition, an electrolyte outlet is arranged in the middle of the lower block, a support table is arranged at the lower part of the lower block, an electrolyte channel is arranged in the middle of the other support table, a cavity channel is arranged in the middle of the electrolyte channel, in addition, two ends of the electrolyte channel are both provided with liquid feeding holes, and a sieve plate is glued inside the liquid feeding holes.
8. The method for electrolyzing an electrolyte solution according to claim 6, wherein the air flow channel is aligned with the vertical center line of the hood, and the air flow channel is communicated with the hood, and the air flow channel is disposed on the upper portion of the hood such that the vertical center lines of the air flow channel and the hood correspond to each other;
the protrusion is fixedly connected with the protection block, in addition, a movable framework is formed between the protrusion and the rectangular channel with two through ends through the guide port, the protrusion fixedly connected with the head part of the protection block is embedded in the guide port in the rectangular channel with two through ends in a movable mode, and in addition, the protrusion of the T-square framework is arranged in the guide port of the T-square framework.
9. The method for electrolyzing an electrolytic solution containing cobalt-chromium alloy for 3D printing according to claim 6, wherein said protrusions are arranged in a mirror image with respect to the middle point of a protection block, and said protection block and said protrusions are arranged in a mirror image with respect to the middle point of a rectangular parallelepiped passage having two through ends, and said protrusions are fixed to the upper and lower portions of said protection block, and said protection block having said protrusions fixed thereto is disposed at the two ends of said rectangular parallelepiped passage having two through ends.
10. The method for electrolyzing an electrolytic solution by cobalt-chromium alloy electrolytic etching for 3D printing according to claim 6, wherein said protective block is connected to said connection column through a disc spring, and wherein said connection column is connected to said connection column through a rectangular parallelepiped passage having two through ends by welding, and said protective block is connected to said connection column through a disc spring;
the sieve plate and the liquid conveying holes are in the same horizontal center line, and in addition, the sieve plate and the liquid conveying holes are arranged in a mirror image mode aiming at the middle point of the electrolyte channel;
the cavities are arranged at equal intervals and are arranged in the middle of the electrolyte channel, in addition, the electrolyte channel is consistent with the vertical central line of the support table, and the cavities are arranged in the middle of the electrolyte channel;
the first plastic block and the second plastic block have the same shape and size, the opening and the electrolytic cell body are welded, and the second plastic block and the first plastic block are respectively placed in the opening to increase the material of the upper part and the lower part of the cobalt-chromium metal workpiece.
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| GB1395324A (en) * | 1971-05-21 | 1975-05-21 | Secr Defence | Electrochemical removal of material from an electrically conductive workpiece |
| US20080289970A1 (en) * | 2006-09-25 | 2008-11-27 | Poligrat Gmbh | Electropolishing process for cobalt and cobalt alloys |
| CN106367801A (en) * | 2016-09-12 | 2017-02-01 | 河海大学常州校区 | Additive manufacturing metal surface polishing and grinding method |
| CN110129872A (en) * | 2019-05-23 | 2019-08-16 | 广州市雷傲科技有限公司 | Polishing fluid is used in a kind of polishing of cobalt chrome metal electrolyte plasma |
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2021
- 2021-07-30 CN CN202110876470.4A patent/CN113481583B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1395324A (en) * | 1971-05-21 | 1975-05-21 | Secr Defence | Electrochemical removal of material from an electrically conductive workpiece |
| US20080289970A1 (en) * | 2006-09-25 | 2008-11-27 | Poligrat Gmbh | Electropolishing process for cobalt and cobalt alloys |
| CN106367801A (en) * | 2016-09-12 | 2017-02-01 | 河海大学常州校区 | Additive manufacturing metal surface polishing and grinding method |
| CN110129872A (en) * | 2019-05-23 | 2019-08-16 | 广州市雷傲科技有限公司 | Polishing fluid is used in a kind of polishing of cobalt chrome metal electrolyte plasma |
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