Method for cleaning raw zinc sulfide block after paraffin bonding

Abstract

The present disclosure provides a method for cleaning a raw zinc sulfide block after paraffin wax bonding, comprising the steps of: S1, placing the zinc sulfide block in a boiling cleaning solution, melting the paraffin wax on the surface of the block and scrubbing it clean; S2, transferring the zinc sulfide block into clean water, scrubbing the oil stains on the surface of the block; S3, taking out the zinc sulfide block, and lowering the temperature of the block to room temperature; S4, wiping the block with dust-free paper; S5, wrapping the block after wiping it clean. The method provided by the present disclosure can ensure that the raw zinc sulfide block processed by paraffin wax bonding is clear and transparent without spots after cleaning, hot pressing and polishing.

Description

Technical Field

[0001] The present invention relates to the field of block material cleaning, and in particular to a method for cleaning raw zinc sulfide blocks after paraffin bonding processing. Background Art

[0002] At present, the cleaning method of the zinc sulfide block after paraffin bonding processing is mainly as follows: clean water and cleaning agent are prepared into a cleaning solution in any proportion, and then the original zinc sulfide block with residual paraffin after processing is placed in the heated cleaning solution. This step mainly cleans the paraffin and oil stains remaining after the disassembly of the bonding fixture during the grinding process, and then the block is taken out of the cleaning solution and placed in clear warm water for cleaning, and finally taken out of the warm water and wiped with gauze. However, after cleaning by this method, there will still be white oily residues on the surface of the block, which will cause the zinc sulfide block to appear foggy and blurry after hot isostatic pressing, grinding and polishing, affecting the infrared light transmission effect of the window and lens. Summary of the invention

[0003] In view of the problems existing in the background technology, the purpose of the present invention is to provide a method for cleaning raw zinc sulfide blocks after paraffin bonding processing, which can ensure that the raw zinc sulfide blocks are clear and transparent after cleaning, hot isostatic pressing and polishing.

[0004] In some embodiments, the cleaning method of the raw zinc sulfide block after paraffin bonding processing provided by the present disclosure includes the steps of: S1, placing the zinc sulfide block into a boiling cleaning solution, melting the paraffin on the surface of the block and scrubbing it clean; S2, then transferring the zinc sulfide block into clean water, scrubbing the oil stains on the surface of the block; S3, taking out the zinc sulfide block and lowering the temperature of the block to room temperature; S4, wiping the block with dust-free paper; S5, wrapping the block after wiping it clean.

[0005] In some embodiments, the cleaning solution includes clean water and a cleaning agent, and the volume ratio of the clean water to the cleaning agent in the cleaning solution is (10-20):1.

[0006] In some embodiments, in step S1, the zinc sulfide block is placed in a boiling cleaning solution and boiled for 3 to 5 minutes.

[0007] In some embodiments, the temperature of the fresh water in step S2 is 40°C to 50°C.

[0008] In some embodiments, in steps S1 and S2, abrasive cloth is used to scrub the surface of the block.

[0009] In some embodiments, step S3 is: after taking out the zinc sulfide block, place it on pearl cotton and cool it naturally to room temperature.

[0010] In some embodiments, step S4 is: first wipe the block with dust-free paper soaked in kerosene, then wipe the block with dust-free paper soaked in alcohol, then wipe the block with dust-free paper soaked in clean water, and finally wipe the block with dust-free paper soaked in alcohol; in some embodiments, after finally wiping the block with dust-free paper soaked in alcohol in step S4, let the alcohol evaporate and dry quickly; in some embodiments, the number of wipes in step S4 is at least 1. In some embodiments, step S5 is: after wiping the block clean, first wrap it with smooth white paper, and then wrap it with stretch film.

[0011] The beneficial effect of the present invention is that it can ensure that the original zinc sulfide block processed by paraffin bonding is clear and transparent without spots after cleaning, hot pressing and polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a flow chart of the method for cleaning zinc sulfide raw blocks according to Example 1 of the present disclosure.

[0013] Figure 2 This is a diagram of the cleaning process of the zinc sulfide raw block material of Example 1 of the present disclosure; wherein, Figure a is a diagram of a 300mm×300mm zinc sulfide block material, Figure b is a diagram of boiling and scrubbing the zinc sulfide block material in a cleaning solution, Figure c is a diagram of scrubbing the zinc sulfide block material in clean water, Figure d is a diagram of the zinc sulfide block material naturally drying on pearl cotton, Figure e is a diagram of the block material after being wiped with dust-free paper, and Figure f is a diagram of wrapping the block material.

[0014] Figure 3 This is a picture of the finished product of the zinc sulfide raw block material of Example 1 of the present disclosure after being cleaned, hot pressed and polished. DETAILED DESCRIPTION

[0015] It should be understood that the disclosed embodiments are only examples of the present disclosure, and the present disclosure can be implemented in various forms. Therefore, the specific details of the present disclosure should not be interpreted as limiting, but only as the basis for the claims and as a representative basis for teaching ordinary technicians in the field to implement the present disclosure in various ways. In the description of the present disclosure, the terms and professional terms that are not clearly stated are common knowledge of those skilled in the art, and the methods that are not clearly stated are conventional methods known to those skilled in the art. In the description of the present disclosure, "cleaning liquid" includes cleaning agent and water; the main component of the cleaning agent is a common glass cleaning agent on the market, and its components are common knowledge in the field, and may include: alkaline substances, polyols, thickeners, fluorinated surfactants, chelating agents, defoaming agents, etc.

[0016] Next, the method for cleaning the raw zinc sulfide block after the paraffin wax bonding process disclosed in the present invention is described.

[0017] In some embodiments, the cleaning method of the raw zinc sulfide block after paraffin bonding processing provided by the present disclosure includes the steps of: S1, placing the zinc sulfide block into a boiling cleaning solution, melting the paraffin on the surface of the block and scrubbing it clean; S2, then transferring the zinc sulfide block into clean water, scrubbing the oil stains on the surface of the block; S3, taking out the zinc sulfide block and lowering the temperature of the block to room temperature; S4, wiping the block with dust-free paper; S5, wrapping the block after wiping it clean.

[0018] In some embodiments, the cleaning solution includes clean water and a cleaning agent, and the volume ratio of the clean water to the cleaning agent in the cleaning solution is (10-20):1.

[0019] In some embodiments, in step S1, the zinc sulfide block is placed in a boiling cleaning solution and boiled for 3 to 5 minutes. The boiling cleaning solution can better dissolve the paraffin and stains remaining on the surface of the block.

[0020] In some embodiments, the temperature of the fresh water in step S2 is 40°C to 50°C.

[0021] In some embodiments, the surface of the block is scrubbed with emery cloth in steps S1 and S2. The surface of the emery cloth is relatively rough and can generate friction with the surface of the block. The emery cloth scrubbed with the block in step S1 can remove the paraffin and oil stains remaining on the surface of the block. The main function of the emery cloth scrubbed with the block in step S2 is to scrub away the oily substances dissolved on the surface of the block and the residual cleaning agent.

[0022] In some embodiments, step S3 is: after taking out the zinc sulfide block, place it on the pearl cotton and cool it naturally to room temperature. This step is crucial to the effect of wiping the surface clean later.

[0023] In some embodiments, step S4 is: first wipe the block with dust-free paper soaked in kerosene, then wipe the block with dust-free paper soaked in alcohol, then wipe the block with dust-free paper soaked in clean water, and finally wipe the block with dust-free paper soaked in alcohol. Because the surface of the ground zinc sulfide block is uneven under microscopic observation, paraffin is easily left in the pits on the surface of the block. Wiping with kerosene can penetrate it into the product pits and dissolve the paraffin remaining on the surface of the block; then wipe with alcohol, alcohol has extremely strong volatility, can dissolve the residual oil and evaporate directly together; then wipe with clean water for a second time, you can dilute the substance on the surface of the block again; finally wipe with alcohol, and evaporate the little residual substance on the surface together. In some embodiments, after wiping the block with dust-free paper soaked in alcohol in step S4, let the alcohol evaporate and dry quickly. In some embodiments, the number of wipes in step S4 is at least 1.

[0024] In some embodiments, step S5 is: after the block is wiped clean, it is first wrapped with smooth white paper and then wrapped with a stretch film, so as to avoid secondary contamination of the cleaned block.

[0025] The present disclosure is further described below in conjunction with the examples. It should be understood that these examples are only used to illustrate the present disclosure and are not intended to limit the scope of the present disclosure. In the following examples and comparative examples, the reagents, materials and instruments used, if not otherwise specified, can be commercially available or prepared by methods known in the art.

[0026] Example 1

[0027] Cut the zinc sulfide block with residual paraffin and oil into a size of 300mm×300mm, prepare the cleaning solution in the ratio of clean water and cleaning agent 15:1, and boil it. Put the zinc sulfide block into the boiling cleaning solution and boil it for 3 minutes to melt the surface paraffin, and then wipe it clean with emery cloth; after cleaning with the cleaning solution, put the zinc sulfide block into 40℃ clean water and wipe it clean with emery cloth; then, take the zinc sulfide block out of the clean water and place it on clean pearl cotton to cool and dry naturally. After drying, wipe it once with dust-free paper dipped in kerosene, then wipe it once with dust-free paper dipped in alcohol, then wipe it once with dust-free paper dipped in clean water, and finally wipe it once with dust-free paper dipped in alcohol. After wiping clean, wrap the block with smooth white paper inside and stretch film outside.

[0028] Comparative Example 1

[0029] Cut the zinc sulfide block with residual paraffin and oil into a size of 300mm×300mm, prepare a cleaning solution with a ratio of clean water and cleaning agent of 30:1, and heat it to 70℃. Put the zinc sulfide block into the cleaning solution and heat it at a constant temperature for 3 minutes, then scrub it with emery cloth; after cleaning with the cleaning solution, put the zinc sulfide block into 40℃ clean water and scrub it with emery cloth; then, take the zinc sulfide block out of the clean water and wipe it three times with dust-free paper dipped in alcohol. After wiping, wrap the block with smooth white paper inside and stretch film outside.

[0030] After different cleaning processes, the experimental parameters and test results of the zinc sulfide block materials of Example 1 and Comparative Example 1 are shown in Table 1. The test methods and experimental methods involved in Table 1 can be obtained through standards and means known in the industry or the art.

[0031] Table 1 Experimental parameters and test results of zinc sulfide block materials of embodiments and comparative examples

[0032]

[0033] According to the experimental results of Example 1, it can be seen that after the original zinc sulfide block after paraffin bonding processing is cleaned by the method provided by the present disclosure, the surface of the zinc sulfide block can be free of oily residues, and Figure 2 As can be seen from Figure f, the product obtained after hot pressing of the block is clear and transparent, without any spots. However, in Comparative Example 1, the cleaning method provided by the present disclosure was not used, and oily residues were present on the surface of the zinc sulfide block after cleaning, and the product obtained after hot pressing of the block was blurry and opaque.

[0034] The above description is only an example of the present disclosure and does not constitute any form of limitation to the present disclosure. Although the present disclosure is disclosed as above in the form of a preferred embodiment, it is not intended to limit the present disclosure. Any technician familiar with the profession, without departing from the scope of the technical solution of the present disclosure, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and are within the scope of the technical solution of the present disclosure.

Claims

1. A method for cleaning raw zinc sulfide blocks after paraffin bonding, characterized in that: The following steps are involved: S1, putting the zinc sulfide block into a boiling cleaning solution and boiling for 3-5 minutes, melting the paraffin on the surface of the block and scrubbing it with emery cloth, wherein the cleaning solution comprises clean water and a cleaning agent, and the volume ratio of clean water to the cleaning agent in the cleaning solution is (10-20):1; S2, then transfer the zinc sulfide block into 40℃~50℃ clean water, and use emery cloth to clean the oil stains on the surface of the block; S3, take out the zinc sulfide block, place it on pearl cotton and cool it naturally to room temperature; S4, first wipe the block with dust-free paper soaked in kerosene, then wipe the block with dust-free paper soaked in alcohol, then wipe the block with dust-free paper soaked in clean water, and finally wipe the block with dust-free paper soaked in alcohol; S5, after wiping clean, wrap it with smooth white paper first, then with stretch film.

2. The cleaning method of the zinc sulfide raw block after the paraffin bonding process according to claim 1, characterized in that, In step S1, the cleaning liquid includes clean water and a cleaning agent, and the volume ratio of the clean water to the cleaning agent in the cleaning liquid is 15:

1.

3. The cleaning method of the zinc sulfide raw block after the paraffin bonding process according to claim 1 is characterized in that, In step S1, the zinc sulfide block is placed in a boiling cleaning solution and boiled for 3 minutes.

4. The cleaning method of the zinc sulfide raw block after the paraffin bonding process according to claim 1 is characterized in that, The temperature of the fresh water in step S2 is 40°C.

5. The cleaning method of the zinc sulfide raw block after the paraffin bonding process according to claim 1 is characterized in that, In step S4, each wiping number is 1 time.

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