Method for cleaning multi-wire sawed lenses

Abstract

The present disclosure provides a cleaning method for multi-wire cut lens, comprising the steps of: (1) placing the multi-wire cut lens into DSL-3.8 for soaking; (2) taking out the lens soaked in step (1) and spraying with DSL-3.8; (3) air-drying the lens sprayed in step (2); (4) baking the lens air-dried in step (3); (5) placing the lens baked in step (4) into lye for soaking; (6) rinsing the lens soaked in step (5) in clean water; (7) taking out the rinsed lens and wiping it clean, thus completing the cleaning.

Description

Technical Field

[0001] This disclosure relates to the field of infrared optical lens processing, specifically to a method for cleaning lenses after multi-wire cutting. Background Technology

[0002] In infrared lens processing, multi-wire cutting is an important machining process in roughing. Multi-wire cutting is carried out using the cutting principle of high-speed diamond wire. The diamond grit and mud residue remaining on the surface of the lens after multi-wire cutting are difficult to remove. If not treated in time, there will be marks left on the surface. The existing process uses kerosene for cleaning, but kerosene cleaning of lenses has the following drawbacks: (1) Because kerosene is flammable, the safety requirements for operators and the layout of the workshop are relatively strict during the use of kerosene, that is, there are great safety hazards and the workshop layout costs are high; (2) The cleanliness of the cleaned lens is unstable.

[0003] Therefore, in order to solve the defects in kerosene cleaning, a new cleaning process needs to be developed. Summary of the Invention

[0004] In view of the problems existing in the background art, the purpose of this disclosure is to provide a cleaning method for lenses after multi-wire cutting. The cleaning method has low safety risks, is easy to operate, and can ensure a high cleaning yield.

[0005] The cleaning method for multi-wire cut lenses disclosed herein includes the following steps: (1) immersing the multi-wire cut lens in a DSL-3.8 solution; (2) removing the lens after immersion in step (1) and spraying it with a DSL-3.8 solution; (3) air-drying the lens after spraying in step (2); (4) baking the lens after air-drying in step (3); (5) immersing the lens after baking in step (4) in alkaline water; (6) rinsing the lens after immersion in step (5) in clean water; and (7) removing the rinsed lens and drying it clean to complete the cleaning process.

[0006] In some embodiments, step (4) is to place the lens that has been air-dried and adhered to the graphite plate in step (3) on a baking table for baking.

[0007] In some embodiments, step (45) is further included between steps (4) and (5): the lens baked in step (4) is removed from the graphite plate and neatly arranged.

[0008] In some embodiments, the soaking time in step (1) is 5 min to 10 min.

[0009] In some embodiments, the spraying time in step (2) is 10 min to 15 min.

[0010] In some embodiments, the air-drying process in step (3) is: air-drying at room temperature for 5 min to 10 min.

[0011] In some embodiments, the baking temperature in step (4) is 180°C to 220°C.

[0012] In some embodiments, in step (5), the alkaline water temperature is 70℃~90℃ and the soaking time is 5min~10min.

[0013] In some embodiments, in step (6), the water temperature is 35°C to 45°C and the rinsing time is 5 min to 10 min.

[0014] In some embodiments, in step (7), gauze is used for wiping.

[0015] This disclosure includes at least the following beneficial effects: the cleaning solution has good stability, and the cleaning method can achieve a final cleaning yield of over 98% for the lenses; the cleaning method reduces safety hazards and is easy to operate; the cleaning solution is reusable and has low cost. Detailed Implementation

[0016] It should be understood that the disclosed embodiments are merely examples of this disclosure, which can be implemented in various forms. Therefore, the specific details of this disclosure should not be construed as limiting, but are intended only as the basis for the claims and as an illustrative basis to teach those skilled in the art how to implement this disclosure in various ways.

[0017] In this disclosure, any terms and technical terms not explicitly stated are common knowledge to those skilled in the art, and any methods not explicitly stated are conventional methods known to those skilled in the art. In this disclosure, the term "DSL-3.8" refers to a powerful cleaning agent composed of 80% oxidizing solvent and 20% mineral oil. It has a certain degree of volatility and its main function is degreasing / dewaxing; it is a commonly used substance known in the art.

[0018] In this disclosure, the lens is fixed to a graphite plate with sealing wax before cutting to prevent the lens from moving during the cutting process and after cutting. Therefore, a graphite plate is attached to the lens after multi-wire cutting.

[0019] The cleaning method for multi-wire cut lenses disclosed herein includes the following steps: (1) immersing the multi-wire cut lens in a DSL-3.8 solution; (2) removing the lens after immersion in step (1) and spraying it with a DSL-3.8 solution; (3) air-drying the lens after spraying in step (2); (4) baking the lens after air-drying in step (3); (5) immersing the lens after baking in step (4) in alkaline water; (6) rinsing the lens after immersion in step (5) in clean water; and (7) removing the rinsed lens and drying it clean to complete the cleaning process.

[0020] In some embodiments, step (4) is to place the lens that has been air-dried and adhered to the graphite plate in step (3) on the baking table for baking.

[0021] In some embodiments, a step (45) is further included between steps (4) and (5): removing the baked lens from the graphite plate in step (4) and arranging it neatly. In some embodiments, the lens removal time is best controlled within 5-10 minutes to avoid the lens needing to be re-baked after cooling down.

[0022] Step (1) soaking is to dissolve the oil and some of the mud on the lens surface. In some embodiments, the soaking time in step (1) is 5 min to 10 min.

[0023] Step (2) spraying is to rinse away oil and material slurry in the gaps of the lens. In some embodiments, the spraying time in step (2) is 10 min to 15 min.

[0024] In some embodiments, the air-drying process in step (3) is: air-drying at room temperature for 5 min to 10 min.

[0025] In some embodiments, the baking temperature in step (4) is 180°C to 220°C.

[0026] In some embodiments, step (4) involves placing the lens, which has been air-dried and adhered to the graphite plate in step (3), on a baking table heated to 180°C–220°C for baking. The purpose is to melt the sealing wax between the lens and the graphite plate, thereby allowing the lens to be easily removed from the graphite plate.

[0027] Step (5) is to soak the lens to completely dissolve the residual sealing wax on the lens surface. In some embodiments, in step (5), the alkaline water temperature is 70°C to 90°C and the soaking time is 5 min to 10 min.

[0028] In some embodiments, in step (6), the water temperature is 35°C to 45°C and the rinsing time is 5 min to 10 min.

[0029] In some embodiments, in step (7), gauze is used for wiping.

[0030] The present disclosure is further illustrated below with reference to the embodiments. Unless otherwise specified, the reagents, materials and instruments used in the following embodiments and comparative examples are commercially available or prepared by methods known in the art.

[0031] Example 1

[0032] (1) Place the multi-line cut lens into pool No. 1 containing DSL-3.8 and soak it at room temperature for 5 minutes to dissolve the oil and some material mud on the lens surface.

[0033] (2) Take out the soaked multi-line cut lens and put it into pool No. 2 containing room temperature DSL-3.8 for 10 minutes to rinse the oil and mud in the gap of the lens;

[0034] (3) Place the rinsed multi-line cut lens on the drying table and air dry at room temperature for 5 min to 10 min.

[0035] (4) After the multi-line cut lens that was attached to the graphite plate in step (3) was dried, it was placed on a baking table heated to 200°C for baking.

[0036] (5) Remove the baked lenses from the graphite plate support and arrange them neatly. The optimal removal time is 5-10 minutes to avoid the lenses needing to be reheated after cooling.

[0037] (6) Soak the lenses after baking in alkaline water at 80°C for 5 to 10 minutes;

[0038] (7) Rinse the lenses that have been soaked in alkaline water in 40°C clean water for 2 minutes;

[0039] (8) Take out the rinsed lens and wipe it dry with gauze to complete the cleaning.

[0040] Comparative Example 1

[0041] (1) Place the multi-line cut mirror attached to the graphite plate on a baking table heated to 200°C for baking;

[0042] (2) Remove the baked lenses from the graphite plate support and arrange them neatly. The optimal removal time is 5-10 minutes to avoid the lenses needing to be reheated after cooling.

[0043] (3) Soak the lenses after baking in alkaline water at 80°C for 5 to 10 minutes;

[0044] (4) Rinse the lenses after soaking in alkaline water in 40°C clean water for 2 minutes;

[0045] (5) Take out the rinsed lens and wipe it dry with gauze to complete the cleaning.

[0046] Comparative Example 2

[0047] (1) Soak the multi-line cut lens in pool No. 1 containing dish soap at room temperature for 5 minutes.

[0048] (2) Take out the soaked multi-line cut mirror and put it into pool No. 2 containing room temperature detergent and spray it for 10 minutes.

[0049] (3) Place the rinsed multi-line cut lens on the drying table and air dry at room temperature for 5 min to 10 min.

[0050] (4) After the multi-line cut mirror that was attached to the graphite plate in step (3) is air-dried, it is placed on a baking table heated to 200°C for baking.

[0051] (5) Remove the baked lenses from the graphite plate support and arrange them neatly. The optimal removal time is 5-10 minutes to avoid the lenses needing to be reheated after cooling.

[0052] (6) Soak the lenses after baking in alkaline water at 80°C for 5 to 10 minutes;

[0053] (7) Rinse the lenses that have been soaked in alkaline water in 40°C clean water for 2 minutes;

[0054] (8) Take out the rinsed lens and wipe it dry with gauze to complete the cleaning.

[0055] Comparative Example 3

[0056] (1) Place the multi-line cut lens into pool No. 1 containing DSL-3.8 and soak it at room temperature for 5 minutes to dissolve the oil and some material mud on the lens surface.

[0057] (2) Take out the soaked multi-line cut lens and put it into pool No. 2 containing room temperature DSL-3.8 for 10 minutes to rinse the oil and mud in the gap of the lens;

[0058] (3) Place the rinsed multi-line cut lens on the drying table and air dry at room temperature for 5 min to 10 min.

[0059] (4) After the multi-line cut mirror that was attached to the graphite plate in step (3) is air-dried, it is placed on a baking table heated to 200°C for baking.

[0060] (5) Remove the baked lenses from the graphite plate support and arrange them neatly. The optimal removal time is 5-10 minutes to avoid the lenses needing to be reheated after cooling.

[0061] (6) Rinse the lens in 40℃ clean water for 2 minutes;

[0062] (7) Take out the rinsed lens and wipe it dry with gauze to complete the cleaning.

[0063] Comparative Example 4

[0064] (1) Place the multi-line cut lens into pool No. 1 containing DSL-3.8 and soak it at room temperature for 5 minutes to dissolve the oil and some material mud on the lens surface.

[0065] (2) Take out the soaked multi-line cut lens and put it into pool No. 2 containing room temperature DSL-3.8 for 10 minutes to rinse the oil and mud in the gap of the lens;

[0066] (3) Place the rinsed multi-line cut lens on the drying table and air dry at room temperature for 5 min to 10 min.

[0067] (4) Soak the lens in alkaline water at 80℃ for 5 to 10 minutes;

[0068] (5) Rinse the lenses after soaking in alkaline water in 40℃ clean water for 2 minutes;

[0069] (6) Take out the rinsed lens and wipe it dry with gauze to complete the cleaning.

[0070] Comparative Example 5

[0071] (1) Place the multi-line cut lens into pool No. 1 containing DSL-3.8 and soak it at room temperature for 5 minutes to dissolve the oil and some material mud on the lens surface.

[0072] (2) Take out the soaked multi-line cut lens and put it into pool No. 2 containing room temperature DSL-3.8 for 10 minutes to rinse the oil and mud in the gap of the lens;

[0073] (3) Place the rinsed multi-line cut lens on the drying table and air dry at room temperature for 5 min to 10 min.

[0074] (4) After the multi-line cut mirror that was attached to the graphite plate in step (3) is air-dried, it is placed on a baking table heated to 150°C for baking.

[0075] (5) Remove the baked lenses from the graphite plate support and arrange them neatly. The optimal removal time is 5-10 minutes to avoid the lenses needing to be reheated after cooling.

[0076] (6) Soak the lenses after baking in alkaline water at 80°C for 5 to 10 minutes;

[0077] (7) Rinse the lenses that have been soaked in alkaline water in 40°C clean water for 2 minutes;

[0078] (8) Take out the rinsed lens and wipe it dry with gauze to complete the cleaning.

[0079] The cleaning yield of the lenses after cleaning in Example 1 and Comparative Examples 1-5 was tested, and the test results are shown in Table 1.

[0080] Table 1

[0081]

[0082] Example 1 used the cleaning method disclosed herein. After cleaning, the lens only showed dirt and no damage, and the final cleaning yield reached 98%. Compared with Example 1, Comparative Example 1 did not have the DSL-3.8 soaking step, and the lens had dirt and oil stains after cleaning; Comparative Example 2 replaced DSL-3.8 with dish soap, and the lens had dirt, marks, and oil stains after cleaning; Comparative Example 3 did not have 80°C alkaline water soaking, and the sealing wax could not be removed from the lens; Comparative Example 4 did not have a baking step, and the sealing wax bonded to the lens could not be melted. Using 80°C alkaline water could only detach a small portion of the lens from the graphite plate, ultimately resulting in overlapping and broken edges, rendering it unusable; Comparative Example 5 had a baking temperature below 180°C, and the sealing wax could not be completely melted, resulting in the lens not being completely detached from the graphite plate, which in turn caused overlapping and broken edges of the detached lens in 80°C alkaline water.

[0083] The above description is merely an example of this disclosure and is not intended to limit this disclosure in any way. Although this disclosure is presented above with preferred embodiments, it is not intended to limit this disclosure. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solutions disclosed herein are equivalent to equivalent implementation cases and are all within the scope of the technical solutions disclosed herein.

Claims

1. A method for cleaning lenses after multi-wire cutting, characterized in that, Multi-wire cutting uses diamond wire. Before cutting, the lens is fixed to a graphite plate with sealing wax. After multi-wire cutting, a graphite plate is adhered to the lens. The process includes: (1) Immerse the multi-wire cut lens in DSL-3.8 for 5 min to 10 min; (2) Take out the lens after soaking in step (1) and spray it with DSL-3.8 for 10 min to 15 min; (3) Air dry the lens after spraying in step (2); (4) Bake the lens after air drying in step (3) at a temperature of 180℃~220℃; (5) Soak the lens after baking in step (4) in alkaline water at a temperature of 70℃~90℃ for 5min~10min. (6) Rinse the lenses after soaking in step (5) in clean water; (7) Take out the rinsed lens and wipe it clean to complete the cleaning. The final cleaning yield of the lens is over 98%. The step between steps (4) and (5) includes step (45): removing the baked lens from the graphite plate and arranging it neatly.

2. The cleaning method for lenses after multi-wire cutting according to claim 1, characterized in that, Step (4) is to place the lens that was dried in step (3) and pasted onto the graphite plate on the baking table for baking.

3. The cleaning method for lenses after multi-wire cutting according to claim 1, characterized in that, The air-drying process in step (3) is: air-drying at room temperature for 5 to 10 minutes.

4. The cleaning method for lenses after multi-wire cutting according to claim 1, characterized in that, In step (6), the water temperature is 35℃~45℃ and the rinsing time is 5min~10min.

5. The cleaning method for lenses after multi-wire cutting according to claim 1, characterized in that, In step (7), gauze is used for wiping.

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