CN116832582B - Process for purifying high-pressure air in laser fiber metal cutting - Google Patents
Process for purifying high-pressure air in laser fiber metal cutting Download PDFInfo
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- 238000005520 cutting process Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000008569 process Effects 0.000 title claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 title claims abstract description 28
- 239000000835 fiber Substances 0.000 title claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000004887 air purification Methods 0.000 claims abstract description 8
- 239000013307 optical fiber Substances 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims 2
- 238000002156 mixing Methods 0.000 claims 2
- 238000003698 laser cutting Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 27
- 239000007789 gas Substances 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 238000012360 testing method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012994 industrial processing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
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Abstract
The invention relates to the technical field of laser cutting, in particular to a process for purifying high-pressure air in laser fiber metal cutting; the invention provides a process for purifying high-pressure air in laser fiber metal cutting, which comprises the steps of introducing air to be purified into a water tank, then introducing the air after water passing into a treatment box containing a first treatment agent for treatment, then introducing the air into a treatment box containing a second treatment agent for treatment, then introducing the treated air into the treatment box containing the first treatment agent for treatment in a reverse direction, then introducing the air into the treatment box containing the second treatment agent for treatment, and repeating for 3-4 times to finish high-pressure air purification; according to the process for purifying the high-pressure air in the laser optical fiber metal cutting, the obtained high-pressure air can not only effectively improve the cutting speed and accelerate the cutting efficiency, but also promote the reduction of the pressure requirement on cutting gas; but also has the advantage of reducing the cost.
Description
Technical Field
The invention relates to the technical field of laser cutting, in particular to a process for purifying high-pressure air in laser fiber metal cutting.
Background
In recent years, along with transformation and upgrading of industrial manufacturing industry, the laser industry is coming into the spring, and cutting technology is greatly expanded in a plurality of fields, so that the method has great significance in promoting the development of the industry. The laser cutting technology has the characteristics of intelligence, high efficiency and high quality, and has very wide application in various mechanical manufacturing and processing industries such as rail transit, automobiles, engineering machinery, electrical manufacturing, household appliances and the like.
Currently, air, O is generally used 2 Or N 2 As a laser cutting assist gas, air assisted laser cutting is compared to O 2 Or N 2 As laser cutting auxiliary gas, the laser cutting auxiliary gas has the effect of low cost, is particularly suitable for industrial processing, but at present, high-pressure air is utilized for auxiliary cutting, and the air purity is not high, so that the cutting speed and the cutting gas pressure requirement are influenced. Therefore, how to effectively purify the air is an important problem to be solved in the laser cutting industry in China.
Accordingly, the present invention provides a process for purifying high-pressure air for metal cutting of laser optical fibers, which is used for solving the above-mentioned related technical problems.
Disclosure of Invention
The invention aims to provide a process for purifying high-pressure air for laser optical fiber metal cutting, which can not only effectively improve the cutting speed, accelerate the cutting efficiency, but also promote the reduction of the pressure requirement on cutting gas; but also has the advantage of reducing the cost.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a process for purifying high-pressure air in laser fiber metal cutting, which comprises the following steps:
I. introducing air to be purified into a water tank, and then delivering the air after water passing into a treatment box containing a first treatment agent for treatment;
II. Then the air is sent into a treatment box containing a second treatment agent for treatment;
and III, reversely introducing the air treated in the step II into a treatment box containing a first treating agent for treatment, then delivering the air into a treatment box containing a second treating agent for treatment, and repeating the treatment for 3-4 times to finish high-pressure air purification.
The invention is further provided with: in the step I, before the air after water passing is sent into the treatment box containing the first treating agent, the method further comprises the step of heating the air after water passing to 30-32 ℃.
The invention is further provided with: in the step I, the first treating agent consists of activated silica gel, activated alumina and activated zeolite according to the mass ratio of 0.3-0.6: 0.5 to 0.8:1 are mixed and compounded.
The invention is further provided with: in the step I, the treatment time in the treatment box is 15-20 min.
The invention is further provided with: in step II, the air is heated to 60-70 ℃ before being sent into the treatment box containing the second treatment agent for treatment.
The invention is further provided with: in the step II, the second treating agent consists of MFM-300 (Al) and modified hydrotalcite-like compound according to the mass ratio of 0.2-0.3: 1 are mixed and compounded.
The invention is further provided with: the preparation method of the modified hydrotalcite-like compound comprises the following steps:
ultrasonically dispersing hydrotalcite-like compound in a proper amount of 0.2mol/L sodium hydroxide solution for 20-30 min according to the solid-liquid ratio of 0.02-0.05 g/mL;
after ultrasonic dispersion is finished, treating the mixture in a water bath at 80 ℃ for 24 hours, filtering and washing the mixture with boiling water and absolute ethyl alcohol for a plurality of times until the mixture is neutral, and drying the mixture in a blast drying oven at 105 ℃ for 60-90 min;
grinding the dried product into powder, and then placing the powder into a muffle furnace for high-temperature roasting to obtain the modified hydrotalcite-like compound.
The invention is further provided with: the roasting temperature is 450 ℃, and the roasting time is 90-110 min.
The invention is further provided with: in the step II, the treatment time in the treatment box is 22-24 min.
The invention is further provided with: in the step III, the temperature of the air is reduced to 30-32 ℃ before the air treated in the step II is reversely introduced into a treatment box containing a first treating agent for treatment.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a process for purifying high-pressure air in laser fiber metal cutting, which comprises the steps of introducing air to be purified into a water tank, then introducing the air after water passing into a treatment box containing a first treatment agent for treatment, then introducing the air into a treatment box containing a second treatment agent for treatment, then introducing the treated air into the treatment box containing the first treatment agent for treatment in a reverse direction, then introducing the air into the treatment box containing the second treatment agent for treatment, and repeating for 3-4 times to finish high-pressure air purification; according to the process for purifying the high-pressure air in the laser optical fiber metal cutting, the obtained high-pressure air can not only effectively improve the cutting speed and accelerate the cutting efficiency, but also promote the reduction of the pressure requirement on cutting gas; but also has the advantage of reducing the cost. The laser fiber metal cutting high-pressure air purification process provided by the invention has wider market prospect and is more suitable for popularization.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a process for purifying high-pressure air for laser fiber metal cutting in accordance with the present invention;
FIG. 2 is a statistical chart of the cutting speed of the present invention;
FIG. 3 is a statistical plot of the cutting pressure of the present invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, the embodiment provides a process for purifying laser fiber metal cutting high-pressure air, which comprises the following steps:
I. and (3) introducing air to be purified into a water tank, and then delivering the air after water passing into a treatment box containing a first treatment agent for treatment.
Further, before the air after water passing is sent into the treatment box containing the first treatment agent, the method further comprises the step of heating the air after water passing to 30 ℃.
Further, the first treating agent comprises activated silica gel, activated alumina and activated zeolite according to the mass ratio of 0.3:0.5:1 are mixed and compounded.
Further, the treatment time in the treatment box is 15min.
II. And then the air is sent into a treatment box containing a second treating agent for treatment.
Wherein the method further comprises heating the air to a temperature of 60 ℃ before the air is sent to the treatment box containing the second treatment agent for treatment.
The second treating agent consists of MFM-300 (Al) and modified hydrotalcite-like compound according to the mass ratio of 0.2:1 are mixed and compounded.
The preparation method of the modified hydrotalcite-like compound comprises the following steps:
ultrasonically dispersing hydrotalcite-like compound in a proper amount of 0.2mol/L sodium hydroxide solution according to a solid-to-liquid ratio of 0.02g/mL for 20min;
after ultrasonic dispersion is finished, treating in a water bath at 80 ℃ for 24 hours, washing with boiling water and absolute ethyl alcohol for multiple times until the mixture is neutral, and drying in a blast drying oven at 105 ℃ for 60 minutes;
grinding the dried product into powder, and then placing the powder into a muffle furnace for high-temperature roasting to obtain the modified hydrotalcite-like compound.
Further, the baking temperature is 450 ℃, and the baking time is 90min.
In addition, the treatment time in the treatment tank was 22min.
And III, reversely introducing the air treated in the step II into a treatment box containing a first treating agent for treatment, then sending the air into a treatment box containing a second treating agent for treatment, and repeating the treatment for 3 times to finish high-pressure air purification.
And (2) cooling the air treated in the step (II) to 30 ℃ before reversely introducing the air into a treatment box containing the first treating agent for treatment.
Example two
As shown in fig. 1, the embodiment provides a process for purifying laser fiber metal cutting high-pressure air, which comprises the following steps:
I. and (3) introducing air to be purified into a water tank, and then delivering the air after water passing into a treatment box containing a first treatment agent for treatment.
Further, before the air after water passing is sent into the treatment box containing the first treatment agent, the method further comprises the step of heating the air after water passing to 31 ℃.
Further, the first treating agent comprises activated silica gel, activated alumina and activated zeolite according to the mass ratio of 0.5:0.6:1 are mixed and compounded.
Further, the treatment time in the treatment tank was 17min.
II. And then the air is sent into a treatment box containing a second treating agent for treatment.
Wherein the method further comprises heating the air to 65 ℃ before the air is sent to the treatment box containing the second treatment agent for treatment.
The second treating agent consists of MFM-300 (Al) and modified hydrotalcite-like compound according to the mass ratio of 0.3:1 are mixed and compounded.
The preparation method of the modified hydrotalcite-like compound comprises the following steps:
ultrasonically dispersing hydrotalcite-like compound in a proper amount of 0.2mol/L sodium hydroxide solution according to a solid-to-liquid ratio of 0.03g/mL for 25min;
after ultrasonic dispersion is finished, treating in a water bath at 80 ℃ for 24 hours, washing with boiling water and absolute ethyl alcohol for multiple times until the mixture is neutral, and drying in a blast drying oven at 105 ℃ for 75 minutes;
grinding the dried product into powder, and then placing the powder into a muffle furnace for high-temperature roasting to obtain the modified hydrotalcite-like compound.
Further, the baking temperature is 450 ℃, and the baking time is 100min.
In addition, the time of the treatment in the treatment tank was 23min.
And III, reversely introducing the air treated in the step II into a treatment box containing a first treating agent for treatment, then sending the air into a treatment box containing a second treating agent for treatment, and repeating the treatment for 4 times to finish high-pressure air purification.
And (2) cooling the air treated in the step (II) to 31 ℃ before reversely introducing the air into a treatment box containing the first treating agent for treatment.
Example III
As shown in fig. 1, the embodiment provides a process for purifying laser fiber metal cutting high-pressure air, which comprises the following steps:
I. and (3) introducing air to be purified into a water tank, and then delivering the air after water passing into a treatment box containing a first treatment agent for treatment.
Further, before the air after water passing is sent into the treatment box containing the first treatment agent, the method further comprises the step of heating the air after water passing to 32 ℃.
Further, the first treating agent comprises activated silica gel, activated alumina and activated zeolite according to the mass ratio of 0.6:0.8:1 are mixed and compounded.
Further, the treatment time in the treatment box is 20min.
II. And then the air is sent into a treatment box containing a second treating agent for treatment.
Wherein the method further comprises heating the air to a temperature of 70 ℃ before the air is sent to the treatment box containing the second treatment agent for treatment.
The second treating agent consists of MFM-300 (Al) and modified hydrotalcite-like compound according to the mass ratio of 0.3:1 are mixed and compounded.
The preparation method of the modified hydrotalcite-like compound comprises the following steps:
ultrasonically dispersing hydrotalcite-like compound in a proper amount of 0.2mol/L sodium hydroxide solution according to a solid-to-liquid ratio of 0.05g/mL for 30min;
after ultrasonic dispersion is finished, treating in a water bath at 80 ℃ for 24 hours, washing with boiling water and absolute ethyl alcohol for multiple times until the mixture is neutral, and drying in a blast drying oven at 105 ℃ for 90 minutes;
grinding the dried product into powder, and then placing the powder into a muffle furnace for high-temperature roasting to obtain the modified hydrotalcite-like compound.
Further, the baking temperature was 450℃and the baking time was 110min.
In addition, the treatment time in the treatment tank was 24 minutes.
And III, reversely introducing the air treated in the step II into a treatment box containing a first treating agent for treatment, then sending the air into a treatment box containing a second treating agent for treatment, and repeating the treatment for 4 times to finish high-pressure air purification.
And (2) cooling the air treated in the step (II) to 32 ℃ before reversely introducing the air into a treatment box containing the first treating agent for treatment.
Comparative example one: the process and the embodiment of purifying the laser fiber metal cutting high-pressure air provided by the embodiment are approximately the same, and the main difference is that: in this example, the treatment was not performed using a treatment tank containing the first treatment agent.
Comparative example two: the process and the embodiment of purifying the laser fiber metal cutting high-pressure air provided by the embodiment are approximately the same, and the main difference is that: in this example, the treatment was not performed using a treatment tank containing the second treatment agent.
Comparative example three: this example uses nitrogen directly.
Effect testing
Air purified by examples one to three in the present invention was taken as test examples 1 to 3, respectively; air purified by comparative examples one to two was designated as comparative examples 1 to 2, and nitrogen of comparative example three was employed as comparative example 3; the performance of each set of samples of equal amounts was then separately tested.
Test 1, cutting speed test and result analysis:
aluminum alloy sheet processing cutting was performed using examples 1 to 3 and comparative examples 1 to 3, respectively, wherein the aluminum alloy sheet had a thickness of 10mm and a width of 2mm, and the cutting speed of comparative example 3 was regarded as 1. The relevant data are recorded in table 1.
Table 1: data record table of cutting speed
As can be seen from table 1 and fig. 2, the cutting speed of the example group was significantly better than that of the comparative group (P < 0.05). The above results indicate that the air of the groups 1 to 3 has an effect of increasing the cutting speed.
To verify the effect of the present invention, experiments of comparative examples 1 to 3 were set.
The main difference between the comparative group 1 and the example 1 is that no treatment was performed with the treatment tank containing the first treatment agent. The cutting speed was found to be reduced by 0.4 in the comparative example 1 group compared to the example 1 group. The results indicate that treatment with the treatment tank containing the first treatment agent plays a role in improving the cutting efficiency.
The main difference between the comparative group 2 and the example 1 is that no treatment was performed with the treatment tank containing the second treatment agent. The test results found that the cutting speed of the comparative example 2 group was reduced by 0.5 compared to the example 1 group. The results indicate that treatment with the treatment tank containing the second treatment agent plays an important role in improving the cutting efficiency.
The main difference between the comparative group 3 and the example 1 group is the direct use of nitrogen. The test results found that the cutting speed of the comparative example 3 group was reduced by 0.2 as compared with the example 1 group. The results show that the air obtained with the present invention is better than the efficiency of cutting with nitrogen.
Test 2, cutting pressure test and result analysis:
aluminum alloy sheet processing cutting was performed using examples 1 to 3 and comparative examples 1 to 3, respectively, wherein the aluminum alloy sheet had a thickness of 10mm and a width of 2mm, and the cutting gas pressure of comparative example 3 was taken as 1 (cutting gas pressure). The relevant data are recorded in table 2.
Table 2: data recording table for gas pressure
As can be seen from table 2 and fig. 3, the cutting gas pressure of the example group was significantly lower than that of the comparative group (P < 0.05). The above results indicate that the air of the groups 1 to 3 has the effect of reducing the cutting gas pressure.
To verify the effect of the present invention, experiments of comparative examples 1 to 3 were set.
The main difference between the comparative group 1 and the example 1 is that no treatment was performed with the treatment tank containing the first treatment agent. The cutting gas of comparative example 1 was found to be increased by 0.1 compared to example 1. The results indicate that treatment with a treatment tank containing a first treatment agent has an effect on the setting of the cutting gas pressure.
The main difference between the comparative group 2 and the example 1 is that no treatment was performed with the treatment tank containing the second treatment agent. The test results found that the cutting gas of the comparative example 2 group increased by 0.1 compared to the example 1 group. The results indicate that treatment with a treatment tank containing a second treatment agent has an effect on the setting of the cutting gas pressure.
The main difference between the comparative group 3 and the example 1 group is the direct use of nitrogen. The test results found that the cutting gas of the comparative example 3 group increased by 0.4 compared to the example 1 group. The results show that the air obtained with the present invention is lower than the gas pressure required for cutting with nitrogen.
From the above, the process for purifying the high-pressure air for metal cutting by the laser optical fiber provided by the invention can not only effectively improve the cutting speed and accelerate the cutting efficiency, but also promote the reduction of the pressure requirement on cutting gas; but also has the advantage of reducing the cost. Therefore, the provided process for purifying the high-pressure air by laser fiber metal cutting has wider market prospect and is more suitable for popularization.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. The process for purifying the high-pressure air in the metal cutting of the laser optical fiber is characterized by comprising the following steps of:
i, introducing air to be purified into a water tank, and then delivering the air after water passing into a treatment box containing a first treatment agent for treatment;
the first treating agent is prepared from activated silica gel, activated alumina and activated zeolite according to the mass ratio of 0.3-0.6: 0.5 to 0.8:1, mixing and compounding;
II, delivering the air into a treatment box containing a second treatment agent for treatment;
the second treating agent consists of MFM-300 (Al) and modified hydrotalcite-like compound according to the mass ratio of 0.2-0.3: 1, mixing and compounding;
and III, reversely introducing the air treated in the step II into a treatment box containing a first treating agent for treatment, then delivering the air into a treatment box containing a second treating agent for treatment, and repeating the treatment for 3-4 times to finish high-pressure air purification.
2. The process for purifying high-pressure air for metal cutting of laser fiber according to claim 1, wherein the process comprises the following steps of: in the step I, before the air after water passing is sent into the treatment box containing the first treating agent, the method further comprises the step of heating the air after water passing to 30-32 ℃.
3. The process for purifying high-pressure air for metal cutting of laser fiber according to claim 1, wherein the process comprises the following steps of: in the step I, the treatment time in the treatment box is 15-20 min.
4. The process for purifying high-pressure air for metal cutting of laser fiber according to claim 1, wherein the process comprises the following steps of: in step II, the air is heated to 60-70 ℃ before being sent into the treatment box containing the second treatment agent for treatment.
5. The process for purifying high-pressure air for metal cutting of laser fiber according to claim 1, wherein the process comprises the following steps of: the preparation method of the modified hydrotalcite-like compound comprises the following steps:
ultrasonically dispersing hydrotalcite-like compound in a proper amount of 0.2mol/L sodium hydroxide solution for 20-30 min according to the solid-liquid ratio of 0.02-0.05 g/mL;
after ultrasonic dispersion is finished, treating the mixture in a water bath at 80 ℃ for 24 hours, filtering and washing the mixture with boiling water and absolute ethyl alcohol for a plurality of times until the mixture is neutral, and drying the mixture in a blast drying oven at 105 ℃ for 60-90 min;
grinding the dried product into powder, and then placing the powder into a muffle furnace for high-temperature roasting to obtain the modified hydrotalcite-like compound.
6. The process for purifying high-pressure air for metal cutting of laser fiber according to claim 5, wherein the process comprises the following steps of: the roasting temperature is 450 ℃, and the roasting time is 90-110 min.
7. The process for purifying high-pressure air for metal cutting of laser fiber according to claim 1, wherein the process comprises the following steps of: in the step II, the treatment time in the treatment box is 22-24 min.
8. The process for purifying high-pressure air for metal cutting of laser fiber according to claim 1, wherein the process comprises the following steps of: in the step III, the temperature of the air after the treatment in the step II is reduced to 30-32 ℃ before the air is reversely introduced into a treatment box containing a first treating agent for treatment.
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