A step-by-step cleaning method for hot isostatic pressing sleeve

Abstract

The invention discloses a step-by-step cleaning method for a package for hot isostatic pressing. The method comprises the following steps: first, ultrasonic vibration is used to package the package. During the entire ultrasonic vibration process, alcohol inside the package is continuously circulated and replaced. The alcohol after ultrasonic vibration is poured out and clean alcohol is poured in again. Then, the package is cleaned in a rotating manner. Finally, the alcohol is poured out and the inside of the package is rinsed in a spraying manner. The step-by-step cleaning method can achieve the effect of quickly and efficiently cleaning the package.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning, and in particular relates to a step-by-step cleaning method for a package sleeve for hot isostatic pressing. Background Art

[0002] Powder metallurgy hot isostatic pressing (HIP) involves placing metal powder directly into a sealed container, applying a certain temperature and pressure, and forming the part directly through contact, plastic deformation, and diffusion. This technology is characterized by uniform microstructure, excellent performance, and the ability to directly form near-net-shape products.

[0003] The closed container used to hold powder in hot isostatic pressing of powder metallurgy is called a sachet. Different shapes of sachets are required depending on the shape of the product. Therefore, it is difficult to process the sachets directly, and it is often necessary to connect multiple parts by welding. During the welding process, impurities such as oxide scale are often introduced into the welds of the sachets. In order to ensure the quality of the hot isostatic pressed parts, it is often necessary to clean the inside of the sachets after welding. In the past, sachets were mostly cleaned by manual shaking and other methods, which was inefficient and the cleaning effect could not be guaranteed. Moreover, when pouring out the cleaning liquid, the welding slag often gathered at the mouth of the sachets and was difficult to discharge. This greatly lengthened the entire hot isostatic pressing process cycle and also caused a sharp increase in the quality risk of hot isostatic pressed parts. Therefore, it is necessary to develop a cleaning method for sachets used in hot isostatic pressing. Summary of the Invention

[0004] The object of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a step-by-step cleaning method for a package for hot isostatic pressing.

[0005] In order to solve the technical problem, the technical solution of the present invention is: a step-by-step cleaning method for a hot isostatic pressing sleeve, comprising the following steps:

[0006] Step 1: Place the bag to be cleaned vertically into the ultrasonic vibration cleaning chamber with the opening facing upward, and use a fixture to fix the bag to be cleaned on the vibration table in the ultrasonic vibration cleaning chamber;

[0007] Step 2: Inject high-purity alcohol into the bag to be cleaned. After the bag to be cleaned is filled with high-purity alcohol, seal the opening of the bag to be cleaned with a sealing plug and insert a first hose for circulating high-purity alcohol. One end of the first hose is inserted into the bottom of the bag to be cleaned, and the other end of the first hose is connected to the alcohol circulation system for alcohol circulation replacement;

[0008] Step 3: Pour hydrocarbon cleaning agent into the ultrasonic vibration cleaning chamber, and do not cover the package to be cleaned. Turn on the ultrasonic vibration of the ultrasonic vibration cleaning chamber. The ultrasonic vibration simultaneously keeps the high-purity alcohol inside the package to be cleaned circulating continuously through the alcohol circulation system;

[0009] Step 4: After step 3 is completed, take out the bag to be cleaned, drain the high-purity alcohol in the bag to be cleaned under the action of gravity, and wipe off the residual liquid on the surface of the bag to be cleaned;

[0010] Step 5: Inject high-purity alcohol into the package to be cleaned. The volume of the high-purity alcohol injected should be 2 / 3 of the volume of the package to be cleaned.

[0011] Step 6: After injecting high-purity alcohol, seal the opening of the bag to be cleaned, and fix the bag to be cleaned on the rotary cleaning device for rotary cleaning;

[0012] Step 7: After step 6 is completed, remove the bag to be cleaned and drain the high-purity alcohol in the bag to be cleaned under the action of gravity;

[0013] Step 8: Place the bag to be cleaned with the opening facing downward and spray it through the spray assembly;

[0014] Step 9: Finally, use compressed air to dry the inside of the bag to be cleaned to complete the cleaning of the bag to be cleaned.

[0015] Preferably, the fixture in step 1 includes four horizontal bars and four vertical bars. The four vertical bars are respectively fixed around the bottom vibration table inside the ultrasonic vibration cleaning chamber. The two ends of the horizontal bars are respectively connected to the tops of the two adjacent vertical bars to form a square frame. When the bottom of the package to be cleaned is placed on the vibration table, the package to be cleaned is fixed on the vibration table through the square frame.

[0016] Preferably, the alcohol circulation system in step 2 includes an external output pipe, a first circulation pump, a filter, a clean alcohol reservoir, a second circulation pump and an external input pipe, one end of the external output pipe is connected to the first hose, the other end of the external output pipe is connected to the first circulation pump, the first circulation pump is connected to the filter, the filter is connected to the clean alcohol reservoir, one end of the second circulation pump is connected to the clean alcohol reservoir, the other end of the second circulation pump is connected to the external input pipe, the other end of the external input pipe is inserted into the top opening of the package to be cleaned, the first circulation pump extracts the high-purity alcohol at the bottom of the package to be cleaned through the first hose and the external output pipe, filters it through the filter and finally recovers it into the clean alcohol reservoir, the second circulation pump extracts the clean high-purity alcohol in the clean alcohol reservoir and refluxes it to the top of the package to be cleaned through the external input pipe, and before starting the first circulation pump and the second circulation pump, ensure that there is at least 1 / 2 volume of high-purity alcohol in the clean alcohol reservoir.

[0017] Preferably, the high-purity alcohol is 99.99% high-purity alcohol.

[0018] Preferably, the filter is composed of a layer of 500-mesh stainless steel filter and a layer of 500-mesh gauze.

[0019] Preferably, the ultrasonic vibration frequency of the ultrasonic vibration cleaning chamber in step 3 is 30 kHz, and the ultrasonic vibration time is 30 to 40 minutes.

[0020] Preferably, the rotary cleaning device in step 6 includes a rotating shaft, a nut, a chuck and a motor, the motor is supported by a support assembly, the power output end of the motor is connected to the rotating shaft, the rotating shaft is parallel to the horizontal plane, there are two nuts and two chucks, the two chucks are relatively sleeved on the rotating shaft, and the package to be cleaned is sleeved between the two chucks. The two nuts are respectively threadedly connected to the rotating shaft and are arranged on both sides of the two chucks for clamping the package to be cleaned.

[0021] Preferably, the rotation speed of the rotary cleaning in step 6 is 100 r / min and the time is 20 to 30 minutes.

[0022] Preferably, the spray assembly in step 8 includes an alcohol recoverer, a second hose, a pump body, a clean alcohol reservoir and a spray head. The opening of the package to be cleaned is installed downwardly directly above the alcohol recoverer, one end of the second hose is connected to the spray head, and one end of the second hose connected to the spray head extends into the opening of the package to be cleaned, the other end of the second hose is connected to the pump body, and the other end of the pump body is connected to the clean alcohol reservoir through a pipeline. 99.99% high-purity alcohol is stored in the clean alcohol reservoir, and 99.99% high-purity alcohol is used to spray the inside of the package to be cleaned.

[0023] Preferably, the spraying time of the spray flushing in step 8 is 10 to 15 minutes, and the time of using compressed air to dry the package to be cleaned in step 9 is 30 to 40 minutes.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] (1) The present invention discloses a step-by-step cleaning method for a hot isostatic pressing sleeve, which first uses ultrasonic vibration to vibrate the sleeve. During the entire ultrasonic vibration process, the alcohol inside the sleeve is continuously circulated and replaced. The alcohol after ultrasonic vibration is poured out and clean alcohol is poured in again. Then, the sleeve is cleaned by a rotating method. Finally, the alcohol is poured out and the inside of the sleeve is rinsed by a spraying method. The step-by-step cleaning can achieve the effect of quickly and efficiently cleaning the sleeve.

[0026] (2) The present invention can quickly remove the welding slag inside the sleeve through ultrasonic vibration cleaning. The continuous circulation of alcohol during the ultrasonic vibration process can timely discharge the welding slag that has fallen off due to ultrasonic vibration, thereby preventing the welding slag from accumulating at the opening of the sleeve. The remaining welding slag accumulated near the opening of the sleeve after the alcohol is poured out can be quickly discharged through rotary cleaning + spray flushing, which can significantly improve the efficiency of the sleeve cleaning and the final cleaning results.

[0027] (3) The present invention greatly shortens the cleaning time of the package and improves the cleaning effect of the package, shortens the entire cycle of the hot isostatic pressing process, and reduces the quality risk of the hot isostatic pressed parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 , a schematic diagram of the use of the alcohol circulation system of the present invention;

[0029] Figure 2 , a schematic diagram of the use of the rotary cleaning device of the present invention;

[0030] Figure 3 , a schematic diagram of the use of the spray assembly of the present invention;

[0031] Figure 4 , a comparison diagram of Example 6 of the present invention and a control example;

[0032] Figure 5 , partial enlarged views of Example 6 of the present invention and the control example.

[0033] Description of reference numerals:

[0034] 1. Ultrasonic vibration cleaning chamber, 2. Fixture, 3. Bag to be cleaned, 4. First hose, 5. Vibration table, 6. External output pipe, 7. First circulation pump, 8. Filter, 9. Clean alcohol reservoir, 10. Second circulation pump, 11. External input pipe, 12. Alcohol circulation system, 13. Rotating shaft, 14. Nut, 15. Chuck, 16. Motor, 17. Alcohol recovery device, 18. Second hose, 19. Pump body, 20. Clean alcohol reservoir, 21. Sprinkler head;

[0035] 2-1, horizontal bar, 2-2, vertical bar. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is described below in conjunction with examples:

[0037] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0038] Example 1

[0039] The present invention discloses a step-by-step cleaning method for a hot isostatic pressing bag, comprising the following steps:

[0040] Step 1: Place the package 3 to be cleaned vertically with the opening facing upward into the ultrasonic vibration cleaning chamber 1, and use a fixture 2 to fix the package 3 to be cleaned on the vibration table 5 in the ultrasonic vibration cleaning chamber 1;

[0041] Step 2: Inject high-purity alcohol into the package 3 to be cleaned. After the package 3 to be cleaned is filled with high-purity alcohol, seal the opening of the package 3 to be cleaned with a sealing plug, and insert a first hose 4 for circulating high-purity alcohol. One end of the first hose 4 is inserted into the bottom of the package 3 to be cleaned, and the other end of the first hose 4 is connected to the alcohol circulation system 12 for alcohol circulation replacement;

[0042] Step 3: Pour hydrocarbon cleaning agent into the ultrasonic vibration cleaning chamber 1 until it covers the package 3 to be cleaned, and start the ultrasonic vibration of the ultrasonic vibration cleaning chamber 1. The ultrasonic vibration simultaneously keeps the high-purity alcohol inside the package 3 to be cleaned continuously circulating through the alcohol circulation system 12;

[0043] Step 4: After step 3 is completed, take out the package 3 to be cleaned, and drain the high-purity alcohol in the package 3 to be cleaned under the action of gravity, and wipe off the residual liquid on the surface of the package 3 to be cleaned;

[0044] Step 5: Inject high-purity alcohol into the package 3 to be cleaned, and the volume of the injected high-purity alcohol is 2 / 3 of the volume of the package 3 to be cleaned;

[0045] Step 6: After injecting high-purity alcohol, seal the opening of the bag 3 to be cleaned, and fix the bag 3 to be cleaned on the rotary cleaning device for rotary cleaning;

[0046] Step 7: After step 6 is completed, take out the package 3 to be cleaned, and drain the high-purity alcohol in the package 3 to be cleaned under the action of gravity;

[0047] Step 8: Place the bag 3 to be cleaned with its opening facing downwards and perform spray flushing through the spray assembly;

[0048] Step 9: Finally, use compressed air to blow dry the inside of the package 3 to be cleaned, and complete the cleaning of the package 3 to be cleaned.

[0049] Example 2

[0050] like Figure 1 As shown, preferably, the fixture 2 in step 1 includes four horizontal bars 2-1 and four vertical bars 2-2. The four vertical bars 2-2 are respectively fixed around the bottom vibration table 5 inside the ultrasonic vibration cleaning chamber 1. The two ends of the horizontal bar 2-1 are respectively connected to the tops of two adjacent vertical bars 2-2 to form a square frame. When the bottom of the package 3 to be cleaned is placed on the vibration table 5, the package 3 to be cleaned is fixed on the vibration table 5 through the square frame.

[0051] A vibration table 5 is provided at the bottom of the ultrasonic vibration cleaning chamber 1 .

[0052] Example 3

[0053] like Figure 1 As shown, preferably, in the step 2, the alcohol circulation system 12 includes an external output pipe 6, a first circulation pump 7, a filter 8, a clean alcohol reservoir 9, a second circulation pump 10 and an external input pipe 11, one end of the external output pipe 6 is connected to the first hose 4, and the other end of the external output pipe 6 is connected to the first circulation pump 7, the first circulation pump 7 is connected to the filter 8, the filter 8 is connected to the clean alcohol reservoir 9, one end of the second circulation pump 10 is connected to the clean alcohol reservoir 9, the other end of the second circulation pump 10 is connected to the external input pipe 11, and the other end of the external input pipe 11 is inserted into the top opening of the bag to be cleaned 3. The first circulation pump 7 extracts the high-purity alcohol at the bottom of the bag to be cleaned 3 through the first hose 4 and the external output pipe 6 and filters it through the filter 8 and finally recovers it into the clean alcohol reservoir 9. The second circulation pump 10 extracts the clean high-purity alcohol in the clean alcohol reservoir 9 and refluxes it to the top of the bag to be cleaned 3 through the external input pipe 11. Before starting the first circulation pump 7 and the second circulation pump 10, ensure that there is at least 1 / 2 volume of high-purity alcohol in the clean alcohol reservoir 9.

[0054] The ultrasonic vibration cleaning chamber 1 , the first circulation pump 7 and the second circulation pump 10 are started simultaneously. When the ultrasonic vibration of the ultrasonic vibration cleaning chamber 1 is started, the first circulation pump 7 and the second circulation pump 10 are started simultaneously.

[0055] Preferably, the high-purity alcohol is 99.99% high-purity alcohol.

[0056] Preferably, the filter 8 is composed of a layer of 500-mesh stainless steel filter and a layer of 500-mesh gauze.

[0057] Preferably, the ultrasonic vibration frequency of the ultrasonic vibration cleaning chamber 1 in step 3 is 30 kHz, and the ultrasonic vibration time is 30 to 40 minutes.

[0058] Example 4

[0059] like Figure 2 As shown, preferably, the rotary cleaning device in step 6 includes a rotating shaft 13, a nut 14, a chuck 15 and a motor 16. The motor 16 is supported by a support assembly. The power output end of the motor 16 is connected to the rotating shaft 13. The rotating shaft 13 is parallel to the horizontal plane. There are two nuts 14 and two chucks 15. The two chucks 15 are relatively sleeved on the rotating shaft 13. The package 3 to be cleaned is sleeved between the two chucks 15. The two nuts 14 are respectively threadedly connected to the rotating shaft 13 and are arranged on both sides of the two chucks 15 for clamping the package 3 to be cleaned.

[0060] Preferably, the rotation speed of the rotary cleaning in step 6 is 100 r / min and the time is 20 to 30 minutes.

[0061] Example 5

[0062] like Figure 3 As shown, preferably, the spray assembly in step 8 includes an alcohol recoverer 17, a second hose 18, a pump body 19, a clean alcohol reservoir 20 and a spray head 21. The opening of the package 3 to be cleaned is installed downwardly directly above the alcohol recoverer 17, one end of the second hose 18 is connected to the spray head 21, and one end of the second hose 18 connected to the spray head 21 extends into the opening of the package 3 to be cleaned, and the other end of the second hose 18 is connected to the pump body 19, and the other end of the pump body 19 is connected to the clean alcohol reservoir 20 through a pipeline. 99.99% high-purity alcohol is stored in the clean alcohol reservoir 20, and 99.99% high-purity alcohol is used to spray the inside of the package 3 to be cleaned.

[0063] The alcohol recoverer 17 is used to collect the alcohol used for spray cleaning.

[0064] Preferably, the spraying time of the spray flushing in step 8 is 10 to 15 minutes, and the time of using compressed air to dry the package 3 to be cleaned in step 9 is 30 to 40 minutes.

[0065] In order to intuitively demonstrate the advantages of the present invention, two groups of examples and control examples are compared.

[0066] Example 6

[0067] The package 3 to be cleaned is placed vertically into the ultrasonic vibration cleaning chamber 1, and the package 3 is fixed on the vibration table 5 using the fixture 2;

[0068] 99.99% high-purity alcohol is injected into the bag 3 to be cleaned. After the bag 3 is filled with alcohol, the bag opening is sealed with a sealing plug, and a first hose 4 for circulating alcohol is inserted;

[0069] Pour hydrocarbon cleaning agent into the ultrasonic vibration chamber 1 and do not cover the bag 3 to be cleaned. Turn on the ultrasonic vibration frequency of 30kHZ for 30 minutes. Start the first circulation pump 7 and the second circulation pump 10 at the same time as the ultrasonic vibration. The first circulation pump 7 extracts the alcohol at the bottom of the bag 3 to be cleaned through the first hose 4 and the external output pipe 6, filters it through the filter 8, and finally recovers it into the clean alcohol reservoir 9. The second circulation pump 10 extracts the clean alcohol in the clean alcohol reservoir 9 and returns it to the top of the bag 3 to be cleaned through the external input pipe 11; the ultrasonic vibration simultaneously keeps the alcohol inside the bag 3 to be cleaned continuously circulating through the alcohol circulation system 12. Before starting the first circulation pump 7 and the second circulation pump 10, ensure that there is at least 1 / 2 volume of alcohol in the clean alcohol reservoir 9;

[0070] After the ultrasonic cleaning is completed, the package 3 to be cleaned is taken out, and the alcohol in the package 3 to be cleaned is drained under the action of gravity, and the residual liquid on the surface of the package 3 to be cleaned is wiped dry;

[0071] The inner part of the bag 3 to be cleaned is then injected with clean 99.99% high-purity alcohol, and the volume of the injected alcohol is 2 / 3 of the inner volume of the bag 3 to be cleaned;

[0072] After the alcohol is injected into the bag 3 to be cleaned, the bag opening is sealed, and the bag 3 to be cleaned is fixed on the rotating shaft 13 through the chuck 15 and the nut 14. The motor 16 is turned on, and the bag 3 to be cleaned is rotated on the rotating shaft 13 for cleaning at a speed of 100 r / min for 20 minutes;

[0073] After the rotary cleaning is completed, the bag 3 to be cleaned is taken out, and the alcohol in the bag 3 to be cleaned is drained under the action of gravity;

[0074] Place the bag 3 to be cleaned with its opening facing downward, and use a second hose 18 to pass into the interior of the bag 3 to be cleaned. One end of the second hose 18 is connected to the pump body 19, and the other end is equipped with a spray head 21. The other end of the pump body 19 is connected to the clean alcohol reservoir 20. Use 99.99% high-purity alcohol to spray the interior of the bag 3 to be cleaned for 10 minutes.

[0075] Use compressed air to blow dry the inside of the bag 3 to be cleaned for 30 minutes.

[0076] Control Example

[0077] Use rotary cleaning method.

[0078] Alcohol is injected into the bag 3 to be cleaned by gravity for 15 minutes;

[0079] Fix the bag 3 to be cleaned on the rotating shaft 13 through the chuck 15 and the nut 14, turn on the motor 16, and rotate at a speed of 100 r / min for 20 minutes;

[0080] Pour out the alcohol in the bag 3 to be cleaned and filter the alcohol for 10 minutes;

[0081] Repeat the above steps for 30 times;

[0082] Use compressed air to blow dry the inside of bag 3 for 30 minutes.

[0083] The cleaning results of Example 6 and the control example are shown in Table 1 and Figure 4 and 5 , Figure 4 This is a photo of the gauze filtered with alcohol after cleaning in Example 6 and the control example. Figure 5 These are pictures of samples taken from alcohol-filtered gauze and observed under a microscope after cleaning in Example 6 and the control example.

[0084] Table 1 Cleaning results of Example 6 and Control Example

[0085] Example 6 Control Example time 100 minutes 1380 minutes Cleaning effect After cleaning, the alcohol was filtered and no obvious black welding slag was found. After cleaning, the alcohol was filtered and no obvious black slag was found. Metal inclusions none Yes, ferrous metal inclusions of about 20μm

[0086] The cleaning results of Example 6 are compared with those of the control example: in terms of cleaning time, the total cleaning time of Example 6 is 100 minutes, and the total cleaning time of the control example is 1380 minutes. In terms of cleaning efficiency, Example 6 is 13.8 times higher than that of the control example. In terms of cleaning effect, after cleaning, Example 6 and the control example filter the alcohol poured out of the sleeve. After visual observation, no obvious black welding slag is found on the gauze surface of the two groups of examples after cleaning. However, microscopic observation shows that there are ferrous metal inclusions of about 20 μm on the gauze of the control example, while no obvious ferrous metal inclusions are found on the gauze of Example 6. In terms of cleaning effect, Example 6 is also better than the control example. Therefore, the cleaning efficiency and cleaning effect of the sleeve for hot isostatic pressing can be significantly improved by the method of ultrasonic vibration and rotary spray cleaning.

[0087] The working principle of the present invention is as follows:

[0088] like Figures 1-3 As shown, the present invention discloses a step-by-step cleaning method for a sleeve for hot isostatic pressing, which uses ultrasonic vibration plus rotary spraying for cleaning. In the first step, the sleeve is ultrasonically vibrated for 30 minutes at an ultrasonic frequency of 35 Hz. During the entire ultrasonic vibration process, the alcohol inside the sleeve is continuously circulated and replaced. The alcohol after the first ultrasonic vibration is poured out, and clean alcohol is poured in again to prepare for the second step of cleaning. In the second step, the sleeve is cleaned by rotation. The rotary cleaning time is 20 minutes and the speed is 100 r / min. After that, the alcohol is poured out and the inside of the sleeve is rinsed by spraying. The spraying time is 10 minutes. Step-by-step cleaning can achieve the effect of quickly and efficiently cleaning the sleeve.

[0089] The present invention first uses ultrasonic vibration to wrap the sleeve. During the entire ultrasonic vibration process, the alcohol inside the sleeve is continuously circulated and replaced. The alcohol after ultrasonic vibration is poured out and clean alcohol is poured in again. Then, the sleeve is cleaned in a rotating manner, the alcohol is poured out and the inside of the sleeve is rinsed in a spraying manner. The step-by-step cleaning can achieve the effect of quickly and efficiently cleaning the sleeve.

[0090] The present invention can quickly remove the welding slag inside the sleeve through ultrasonic vibration cleaning. The continuous circulation of alcohol in the ultrasonic vibration process can timely discharge the welding slag that has fallen off due to ultrasonic vibration, and avoid the welding slag from accumulating at the opening of the sleeve. Through rotary cleaning + spray flushing, the remaining welding slag accumulated near the opening of the sleeve after pouring out the alcohol can be quickly discharged, which can significantly improve the efficiency of the sleeve cleaning and the final cleaning result.

[0091] The present invention greatly shortens the cleaning time of the package and improves the cleaning effect of the package, shortens the entire cycle of the hot isostatic pressing process, and reduces the quality risk of the hot isostatic pressed parts.

[0092] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the scope of the present invention.

[0093] Many other changes and modifications can be made without departing from the spirit and scope of the present invention. It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A step-by-step cleaning method for a hot isostatic pressing bag, characterized in that: The following steps are involved: Step 1: Place the bag (3) to be cleaned vertically with its opening facing upward into the ultrasonic vibration cleaning chamber (1), and use a fixture (2) to fix the bag (3) to be cleaned on the vibration table (5) in the ultrasonic vibration cleaning chamber (1); Step 2: Inject high-purity alcohol into the package to be cleaned (3). After the package to be cleaned (3) is filled with high-purity alcohol, seal the opening of the package to be cleaned (3) with a sealing plug, and insert a first hose (4) for circulating high-purity alcohol. One end of the first hose (4) is inserted into the bottom of the package to be cleaned (3), and the other end of the first hose (4) is connected to the alcohol circulation system (12) to perform alcohol circulation replacement; Step 3: Pour hydrocarbon cleaning agent into the ultrasonic vibration cleaning chamber (1) so as not to cover the package to be cleaned (3), and start the ultrasonic vibration of the ultrasonic vibration cleaning chamber (1). The ultrasonic vibration simultaneously keeps the high-purity alcohol inside the package to be cleaned (3) continuously circulating through the alcohol circulation system (12); Step 4: After step 3 is completed, the package to be cleaned (3) is taken out, and the high-purity alcohol in the package to be cleaned (3) is drained under the action of gravity, and the residual liquid on the surface of the package to be cleaned (3) is wiped dry; Step 5: High-purity alcohol is injected into the package (3) to be cleaned, and the volume of the injected high-purity alcohol is 2 / 3 of the volume of the package (3) to be cleaned; Step 6: After injecting high-purity alcohol, the opening of the package to be cleaned (3) is sealed, and the package to be cleaned (3) is fixed on the rotary cleaning device for rotary cleaning; Step 7: After step 6 is completed, the bag to be cleaned (3) is taken out, and the high-purity alcohol in the bag to be cleaned (3) is discharged under the action of gravity; Step 8: Place the bag (3) to be cleaned with its opening facing downwards and perform spray flushing through the spray assembly; Step 9: Finally, use compressed air to blow dry the inside of the bag to be cleaned (3) to complete the cleaning of the bag to be cleaned (3).

2. The step-by-step cleaning method for a hot isostatic pressing package according to claim 1, characterized in that: The fixture (2) in step 1 comprises four horizontal bars (2-1) and four vertical bars (2-2), wherein the four vertical bars (2-2) are respectively fixed to the four sides of the vibration table (5) at the bottom inside the ultrasonic vibration cleaning chamber (1), and the two ends of the horizontal bar (2-1) are respectively connected to the tops of two adjacent vertical bars (2-2) to form a square frame. When the bottom of the package (3) to be cleaned is placed on the vibration table (5), the package (3) to be cleaned is fixed to the vibration table (5) through the square frame.

3. The step-by-step cleaning method for a hot isostatic pressing package according to claim 1, characterized in that: The alcohol circulation system (12) in step 2 includes an external output pipe (6), a first circulation pump (7), a filter (8), a first clean alcohol storage (9), a second circulation pump (10) and an external input pipe (11), one end of the external output pipe (6) is connected to the first hose (4), the other end of the external output pipe (6) is connected to the first circulation pump (7), the first circulation pump (7) is connected to the filter (8), the filter (8) is connected to the first clean alcohol storage (9), one end of the second circulation pump (10) is connected to the first clean alcohol storage (9), the other end of the second circulation pump (10) is connected to the external input pipe (11), and the external input The other end of the pipe (11) is inserted into the top opening of the package to be cleaned (3). The first circulation pump (7) extracts the high-purity alcohol at the bottom of the package to be cleaned (3) through the first hose (4) and the external output pipe (6), filters it through the filter (8), and finally recovers it into the first clean alcohol storage (9). The second circulation pump (10) extracts the clean high-purity alcohol in the first clean alcohol storage (9) and returns it to the top of the package to be cleaned (3) through the external input pipe (11). Before starting the first circulation pump (7) and the second circulation pump (10), it is necessary to ensure that there is at least 1 / 2 volume of high-purity alcohol in the first clean alcohol storage (9).

4. The step-by-step cleaning method for a hot isostatic pressing package according to claim 3, characterized in that: The high-purity alcohol is 99.99% high-purity alcohol.

5. The step-by-step cleaning method for a hot isostatic pressing package according to claim 3, characterized in that: The filter (8) is composed of a layer of 500-mesh stainless steel filter and a layer of 500-mesh gauze.

6. The step-by-step cleaning method for a hot isostatic pressing package according to claim 1, characterized in that: In step 3, the ultrasonic vibration frequency of the ultrasonic vibration cleaning chamber (1) is 30 kHz, and the ultrasonic vibration time is 30 to 40 minutes.

7. The step-by-step cleaning method for a hot isostatic pressing package according to claim 1, characterized in that: The rotary cleaning device in step 6 includes a rotating shaft (13), a nut (14), a chuck (15) and a motor (16), wherein the motor (16) is supported by a supporting assembly, and a power output end of the motor (16) is connected to the rotating shaft (13), and the rotating shaft (13) is parallel to the horizontal plane. There are two nuts (14) and two chucks (15), and the two chucks (15) are relatively sleeved on the rotating shaft (13). A bag to be cleaned (3) is sleeved between the two chucks (15), and two nuts (14) are respectively threadedly connected to the rotating shaft (13) and are arranged on both sides of the two chucks (15) for clamping the bag to be cleaned (3).

8. The step-by-step cleaning method for a hot isostatic pressing package according to claim 7, characterized in that: The rotation speed of the rotary cleaning in step 6 is 100 r / min, and the time is 20 to 30 minutes.

9. The step-by-step cleaning method for a hot isostatic pressing package according to claim 1, characterized in that: In step 8, the spray assembly includes an alcohol recovery device (17), a second hose (18), a pump body (19), a second clean alcohol storage device (20) and a spray head (21). The package to be cleaned (3) is installed with its opening facing downward directly above the alcohol recovery device (17). One end of the second hose (18) is connected to the spray head (21). One end of the second hose (18) connected to the spray head (21) extends into the opening of the package to be cleaned (3). The other end of the second hose (18) is connected to the pump body (19). The other end of the pump body (19) is connected to the second clean alcohol storage device (20) through a pipeline. 99.99% high-purity alcohol is stored in the second clean alcohol storage device (20). The 99.99% high-purity alcohol is used to spray the inside of the package to be cleaned (3).

10. The step-by-step cleaning method for a hot isostatic pressing package according to claim 9, characterized in that: The spraying time of the spraying type flushing in step 8 is 10 to 15 minutes, and the time of using compressed air to blow dry the bag (3) to be cleaned in step 9 is 30 to 40 minutes.

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