Grinding liquid for eddy current grinder and preparation method thereof

Abstract

The invention discloses a grinding liquid and a preparation method for an eddy current grinder, and relates to the technical field of grinding materials. The following components are included in percentage by mass: OP‑4 5-10%, OP‑10 5-10%, coconut oil fatty acid diethanolamide 2-5%, sulfurized lard 0.5-1%, cerium‑chlorine organic additive 5-20%, and the remainder is deionized water. A homemade cerium‑chlorine organic additive is used, which has excellent water solubility and can improve grinding efficiency. During the grinding process, the cerium‑chlorine organic additive has cerium and chlorine elements that improve grinding efficiency and are evenly dispersed on the surface of the workpiece, improving grinding efficiency and improving the consistency of the grinding surface. The grinding liquid of the present invention improves cutting efficiency while reducing energy consumption, and can improve the grinding effect of the eddy current grinder.

Description

Technical Field

[0001] The invention relates to the technical field of grinding materials, and in particular to a grinding liquid for an eddy current grinder and a preparation method thereof. Background Art

[0002] Grinding, as a surface treatment method, is widely used in the metal surface treatment industry. In recent years, it has been used in the research and development of metal workpiece processing technology.

[0003] In order to improve the shortcomings of traditional surface treatment processes such as large dust pollution, great harm to operators and serious environmental pollution caused by triacids and potassium dichromate, vibration finishing technology came into being. Grinding technology is to put a certain proportion of workpieces, grinding fluid and finishing grinding blocks into the hopper of the vibration finishing machine, and use the relative periodic friction movement between the grinding tool and the workpiece to process the surface of the parts to improve the surface quality of the workpiece, reduce the surface roughness of the workpiece, improve the physical or mechanical properties of the part surface, and reduce the surface defects (such as edge burrs, flash and fine cracks) generated during the processing and forming of the workpiece. The performance of the grinding fluid in vibration polishing technology and its coordination with the abrasive directly determine the grinding efficiency and grinding quality. The grinding fluid is generally composed of surfactants, rust inhibitors, anti-precipitation agents, acids and alkalis, among which surfactants account for the vast majority of the grinding fluid components. Grinding fluid can play a buffering role, that is, to avoid violent collisions between parts, between parts and grinding blocks, and between grinding blocks. It can also clean the oil, grinding chips or impurities adhering to parts and grinding blocks, ensure the grinding ability of grinding blocks, and prevent the workpiece from rusting. Grinding fluid can also participate in the tumbling process through its own chemical reaction to improve the brightness of parts.

[0004] There are still technical problems of low production efficiency in the grinding and polishing technology in the prior art, such as: rough polishing and fine polishing processes generally require 3 to 4 hours. The eddy current grinder adopts the latest eddy current roller grinding and finishing method, and the processing roller is composed of a fixed cylinder wall and a rotating chassis. During the processing, the rotating chassis rotates at a certain speed, and the rotating disk speed is generally 50 to 180r / min. At present, the grinding fluid used in the eddy current grinder is mainly a liquid based on surfactants and acids and alkalis, and the cutting basically relies on the friction between the filler and the workpiece. For grinding fluids containing inorganic nanoparticles, on the one hand, they are less used in eddy current grinders, and on the other hand, the poor dispersibility and rapid sedimentation of inorganic nanoparticles in liquids cannot improve the grinding effect of eddy current grinders.

[0005] This shows that the prior art needs to be further improved. Summary of the invention

[0006] One of the purposes of the present invention is to provide a grinding liquid for an eddy current grinder, which improves cutting efficiency while reducing energy consumption, thereby improving the grinding effect of the eddy current grinder.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A grinding liquid for an eddy current grinder comprises the following components in terms of mass percentage:

[0009]

[0010] The cerium-chlorine organic additive is prepared by the following method:

[0011] a. Add a certain amount of cerium acetate, deionized water and anhydrous ethanol to a reaction container in sequence, and mix them evenly by stirring to obtain a mixed solution;

[0012] b. Add a certain amount of phosphorus oxychloride to the mixed solution, reflux at 65-75° C. for a period of time, and rotary evaporate to obtain a transparent oily liquid;

[0013] c. Wash the transparent liquid to obtain a cerium-chlorine organic additive.

[0014] As a preferred embodiment of the present invention, in step a, the mass volume ratio of cerium acetate to deionized water is 1:3 g / mL, and the volume ratio of deionized water to anhydrous ethanol is 3:2. After mixing, the mixture is stirred at a temperature of 45 to 55° C. for 0.4 to 0.6 h.

[0015] As another preferred embodiment of the present invention, in step b, the mass ratio of phosphorus oxychloride to cerium acetate is 3:10, the temperature is 65-75°C for reflux for 24 hours, and the rotary evaporation is carried out at a temperature of 80-100°C.

[0016] Furthermore, in step c, dimethyl ether solvent is used for washing at least three times.

[0017] Furthermore, the purity of the OP-4 and OP-10 is 99%.

[0018] Furthermore, the kinematic viscosity of the sulfurized lard at 40°C is less than 500 mm 2 / s.

[0019] Another object of the present invention is to provide a method for preparing the grinding liquid for the eddy current grinder, comprising the following steps:

[0020] Step 1: Dissolve OP-4 and OP-10 in deionized water by stirring at a certain temperature;

[0021] Step 2, adding coconut oil fatty acid diethanolamide to the solution dissolved in step 1, and stirring to mix evenly;

[0022] Step 3, adding the prepared cerium-chlorine organic additive to the mixture obtained in step 2, and stirring evenly;

[0023] Step 4: Add the sulfurized lard to the mixture obtained in step 3, stir thoroughly and let it stand.

[0024] Furthermore, in step 1, the mixing temperature of OP-4 and OP-10 is 30-50°C.

[0025] Compared with the prior art, the present invention brings the following beneficial technical effects:

[0026] The present invention provides a grinding liquid for a vortex grinder, in which OP-4, OP-10, coconut oil fatty acid diethanolamide, sulfurized lard, cerium-chlorine organic additive and deionized water are coordinated with each other to prepare a grinding liquid with good dispersibility and high grinding efficiency. In the components of the present invention, OP-4 and OP-10 are used as emulsifiers, coconut oil fatty acid diethanolamide is used as a surfactant, and through HLB calculation, OP-4, OP-10 and coconut oil fatty acid diethanolamide are used to achieve uniform and stable appearance of the grinding liquid, and play an important role in exerting the effect of the cerium-chlorine organic additive.

[0027] It is particularly important that the present invention adds a homemade cerium-chlorine organic additive to the above-mentioned components, which has excellent water solubility and can improve grinding efficiency. During the grinding process, the cerium and chlorine elements in the cerium-chlorine organic additive that improve grinding efficiency are evenly dispersed on the workpiece surface, and the consistency of the ground surface can be improved while improving the grinding efficiency. In the cerium-chlorine organic additive, the cutting efficiency of the additive can be significantly improved by the compounding effect of cerium-chlorine. The cerium-chlorine organic additive also has good water solubility and can be well dispersed with other components in the grinding liquid to achieve uniform and stable products.

[0028] The addition of sulfurized lard improves the extrusion performance of the grinding fluid, ensures the grinding performance under high vibration frequency, and greatly saves production time.

[0029] The appropriate HLB value is adjusted by OP-4, OP-10 and coconut oil fatty acid diethanolamide to ensure that the sulfurized lard can be well dispersed in the grinding liquid, and a uniform and stable product that can be stored for a long time can be obtained.

[0030] In summary, the present invention utilizes the advantages of uniform dispersion and high grinding efficiency of cerium-chlorine organic additives, combined with the effect of sulfurized lard on improving grinding performance, and can obtain a uniform, stable and high grinding efficiency grinding fluid under the synergistic effect of OP-4, OP-10 and coconut oil fatty acid diethanolamide.

[0031] The preparation method of the present invention has mild conditions, simple steps and is easy to operate. The grinding liquid prepared by the preparation method of the present invention has good dispersibility and high cutting efficiency.

[0032] The beneficial technical effects of the present invention can be further reflected in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings:

[0034] Figure 1 This is the infrared spectrum of the cerium-chlorine organic additive prepared by the present invention. DETAILED DESCRIPTION

[0035] The present invention provides a grinding liquid for an eddy current grinder and a preparation method thereof. In order to make the advantages and technical solutions of the present invention clearer and more specific, the present invention is further described below in conjunction with specific embodiments.

[0036] The raw materials described in the present invention can be purchased through commercial channels.

[0037] In the raw materials of the present invention:

[0038] OP-4 is alkylphenol polyoxyethylene (4) ether, purity 99%;

[0039] OP-10 is alkylphenol polyoxyethylene (10) ether, purity 99%;

[0040] 6501 is coconut oil fatty acid diethanolamide, specification: 1:1.5;

[0041] Sulfurized lard is used as an extreme pressure anti-wear agent, and its kinematic viscosity at 40°C is less than 500 mm 2 / s.

[0042] The cerium-chlorine organic additive described in the present invention is prepared by the following method, the specific steps are:

[0043] In a three-necked flask equipped with a mechanical stirrer and a reflux condenser, a mixture of 10 g of cerium acetate, 30 ml of deionized water and 20 ml of anhydrous ethanol was added in sequence, mixed evenly, and stirred at 50°C for 0.5 h; then 3 g of phosphorus oxychloride was slowly added thereto, refluxed at 70°C for 24 h after the addition was completed, and a transparent oily liquid was obtained by rotary evaporation at 90°C, which was washed three times with dimethyl ether solvent to obtain a cerium-chlorine organic additive.

[0044] The synthetic route of the above cerium-chlorine organic additive is:

[0045]

[0046] The cerium-chlorine organic additive prepared by the above method has an infrared spectrum as shown in FIG. Figure 1 As shown, from Figure 1 It is known that the organic additive contains both cerium and chlorine.

[0047] The cerium-chlorine organic additive prepared by the above method is added to the polishing liquid of the present invention, which is further described below in conjunction with the examples.

[0048] Embodiment 1:

[0049] The components are calculated by weight percentage as follows: OP-4 5%, OP-10 10%, 6501 2%, sulfurized lard 0.5%, cerium-chlorine organic additive 5%, and the balance is deionized water.

[0050] The preparation method is:

[0051] (1) OP-4 and OP-10 were dissolved in deionized water at 40°C by stirring;

[0052] (2) Add 6501 to the above solution and stir thoroughly;

[0053] (3) adding the cerium-chlorine organic additive to the mixture prepared in step (2) and stirring thoroughly;

[0054] (4) The above-mentioned mixed material is fully stirred, and then sulfurized lard is added, and the mixture is fully stirred and allowed to stand to finally obtain a grinding liquid.

[0055] The grinding liquid obtained in this example was used in a vortex grinder with a grinding drum capacity of 50L, using 4mm*4mm regular triangle ceramic abrasives, and the grinding surface area was 15dm 3 The stainless steel 430 flake product was ground from Ra 12μm to Ra 0.2μm in 1h.

[0056] Embodiment 2:

[0057] The components are calculated by weight percentage as follows: OP-4 10%, OP-10 5%, 6501 5%, sulfurized lard 1%, cerium-chlorine organic additive 20%, and the balance is deionized water.

[0058] The preparation method is:

[0059] (1) OP-4 and OP-10 were dissolved in deionized water at 50°C by stirring;

[0060] (2) Add 6501 to the above solution and stir thoroughly;

[0061] (3) adding the cerium-chlorine organic additive to the mixture prepared in step (2) and stirring thoroughly;

[0062] (4) The above-mentioned mixed material is fully stirred, and then sulfurized lard is added, and the mixture is fully stirred and allowed to stand to finally obtain a grinding liquid.

[0063] The grinding liquid obtained in this example was used in a vortex grinder with a grinding drum capacity of 50L, using 4mm*4mm regular triangle ceramic abrasives, and the grinding surface area was 15dm 3 The stainless steel 430 sheet product was ground from Ra 12μm to Ra 0.2μm in 0.5h.

[0064] Embodiment 3:

[0065] The components are calculated by weight percentage as follows: OP-4 8%, OP-10 8%, 6501 3%, sulfurized lard 0.5%, cerium-chlorine organic additive 15%, and the balance is deionized water.

[0066] The preparation method is:

[0067] (1) OP-4 and OP-10 were dissolved in deionized water at 45°C by stirring;

[0068] (2) Add 6501 to the above solution and stir thoroughly;

[0069] (3) adding the cerium-chlorine organic additive to the mixture prepared in step (2) and stirring thoroughly;

[0070] (4) The above-mentioned mixed material is fully stirred, and then sulfurized lard is added, and the mixture is fully stirred and allowed to stand to finally obtain a grinding liquid.

[0071] The grinding liquid obtained in the embodiment was used in a vortex grinder with a grinding drum capacity of 50L, using 4mm*4mm regular triangle ceramic abrasives, and the grinding surface area was 15dm 3 The stainless steel 430 sheet product was ground, and the surface roughness was changed from Ra 12μm to Ra 0.2μm in 0.6h.

[0072] Comparative Example 1:

[0073] The difference from Example 1 is that:

[0074] No cerium-chlorine organic additives are added to the raw materials;

[0075] The components are calculated by weight percentage: OP-4 5%, OP-10 10%, 6501 2%, sulfurized lard 0.5%, and the balance is deionized water.

[0076] The preparation method is:

[0077] (1) OP-4 and OP-10 were dissolved in deionized water at 40°C by stirring;

[0078] (2) Add 6501 to the above solution and stir thoroughly;

[0079] (3) The above-mentioned mixed material is fully stirred, and then sulfurized lard is added, and the mixture is fully stirred and allowed to stand to finally obtain a grinding liquid.

[0080] The grinding liquid prepared in this comparative example was used in a vortex grinder with a grinding drum capacity of 50L, using 4mm*4mm regular triangle ceramic abrasives, and the grinding surface area was 15dm 3 The stainless steel 430 flake product was ground from Ra12μm to Ra 0.2μm in 5h.

[0081] Comparative Example 2:

[0082] The difference from Example 1 is that no sulfurized lard is added to the raw materials;

[0083] The components are calculated by weight percentage: OP-4 5%, OP-10 10%, 6501 2%, cerium-chlorine organic additive 5%, and the balance is deionized water.

[0084] The preparation method is:

[0085] (1) OP-4 and OP-10 were dissolved in deionized water at 40°C by stirring;

[0086] (2) Add 6501 to the above solution and stir thoroughly;

[0087] (3) adding the cerium-chlorine organic additive to the mixture prepared in step (2), stirring the mixture sufficiently and allowing it to stand, and finally obtaining a grinding liquid.

[0088] The grinding liquid obtained in this example was used in a vortex grinder with a grinding drum capacity of 50L, using 4mm*4mm regular triangle ceramic abrasives, and the grinding surface area was 15dm 3 The stainless steel 430 sheet product was ground, and the surface roughness was reduced from Ra 12μm to Ra 0.2μm in 3.5h.

[0089] Under the guidance of the above-mentioned Examples 1 to 3, those skilled in the art can also obtain other combinations of raw materials.

[0090] Parts not described in the present invention can be implemented by referring to the existing technology.

[0091] It should be noted that any equivalent method or obvious variation method made by those skilled in the art under the guidance of this specification should be within the protection scope of the present invention.

Claims

1. A grinding liquid for a vortex grinder, characterized in that: The following components are included in percentage by mass: The cerium-chlorine organic additive is prepared by the following method: a. Add a certain amount of cerium acetate, deionized water and anhydrous ethanol to a reaction container in sequence, and mix them evenly by stirring to obtain a mixed solution; b. Add a certain amount of phosphorus oxychloride to the mixed solution, reflux at 65-75° C. for a period of time, and rotary evaporate to obtain a transparent oily liquid; c. Washing the transparent oily liquid to obtain a cerium-chlorine organic additive.

2. The grinding liquid for eddy current grinding machine according to claim 1, characterized in that: In step a, the mass volume ratio of cerium acetate to deionized water is 1:3 g / mL, and the volume ratio of deionized water to anhydrous ethanol is 3:

2. After mixing, the mixture is stirred at a temperature of 45 to 55° C. for 0.4 to 0.6 h.

3. The grinding liquid for eddy current grinding machine according to claim 1, characterized in that: In step b, the mass ratio of phosphorus oxychloride to cerium acetate is 3:10, the temperature is 65-75° C. and refluxed for 24 hours, and the temperature is 80-100° C. and rotary evaporated.

4. The grinding liquid for eddy current grinding machine according to claim 1, characterized in that: In step c, dimethyl ether solvent is used for washing at least three times.

5. The grinding liquid for eddy current grinding machine according to claim 1, characterized in that: The purity of the OP-4 and OP-10 is 99%.

6. The grinding liquid for eddy current grinding machine according to claim 1, characterized in that: The kinematic viscosity of the sulfurized lard at 40°C is less than 500 mm 2 / s.

7. A method for preparing a grinding liquid for a vortex grinder according to claims 1 to 6, characterized in that: The following steps are involved: Step 1: Dissolve OP-4 and OP-10 in deionized water by stirring at a certain temperature; Step 2, adding coconut oil fatty acid diethanolamide to the solution dissolved in step 1, and stirring to mix evenly; Step 3, adding the prepared cerium-chlorine organic additive to the mixture obtained in step 2, and stirring evenly; Step 4: Add the sulfurized lard to the mixture obtained in step 3, stir thoroughly and let it stand.

8. The method for preparing a grinding liquid for a vortex grinder according to claim 7, characterized in that: The mixing temperature of OP-4 and OP-10 in step 1 is 30-50°C.

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