CN112500800A - Stainless steel polishing wax and preparation method thereof - Google Patents
Stainless steel polishing wax and preparation method thereof Download PDFInfo
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
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Abstract
In the polishing process of some polishing waxes, molten polishing wax is easy to gather at the outer edge of a polishing wheel due to centrifugal force, when a workpiece is in contact with the polishing wheel, part of polishing wax is directly splashed out, and in addition, a large amount of polishing wax which is not acted is scraped by the workpiece to form thick wax dirt. The invention provides a stainless steel polishing wax capable of obviously improving the durability of the polishing wax, which comprises the following components in parts by weight: 60-80 parts of surface functionalized modified abrasive, 8-20 parts of grease, 1-6 parts of grease auxiliary agent, 10-40 parts of brightener and 0.1-0.5 part of fluorocarbon surfactant. According to the polishing wax, the polishing wax is enabled to be not easy to fall off from the surface of the polishing cloth wheel while excellent cutting, lubricating and brightening effects are kept through the synergistic effect of the abrasive, the grease auxiliary agent, the grease, the brightening agent and the fluorocarbon surfactant, and the durability of the polishing wax is remarkably improved.
Description
Technical Field
The invention belongs to the technical field of metal surface treatment, relates to a stainless steel polishing wax, and particularly relates to a polishing solid wax for stainless steel fine polishing and a preparation method thereof.
Background
Stainless steel is widely used because of its high corrosion resistance and decorative properties. The surface of the stainless steel product is required to be polished in the processing process, so that the surface flatness is improved, and the appearance of the stainless steel product has a bright shell. At present, the stainless steel product is mainly polished by a mechanical polishing mode. The principle of mechanical polishing is that a smooth glossy surface is obtained by removing a portion protruding from the surface of an object to be polished by the grinding action of polishing wax loaded on a polishing wheel. In the metal polishing process, in order to achieve the final brightening effect, rough polishing, intermediate polishing and fine polishing are generally performed on the surface. Rough polishing is to use a hard wheel to process the surface with a rough surface to reduce the surface roughness preliminarily; the middle polishing is to further process the surface after the rough polishing by using a polishing wheel softer than the rough polishing wheel, and the middle polishing can remove scratches left by the rough polishing and generate a medium-brightness surface; the fine polishing is the final polishing process, and a soft polishing wheel is used for polishing, so that the surface of the polished piece obtains mirror brightness.
At the present stage, the stainless steel is polished mainly by adopting a fine polishing solid wax combined fine polishing cloth wheel, and a large amount of solid wax scale is remained on the surface of the stainless steel after polishing. Such wax deposits contain a large amount of unused polishing wax, and some of the unused polishing wax is thrown off the polishing wheel during the rubbing of the polishing wheel against the stainless steel. The loss of the polishing wax in the two parts causes that the polishing cloth wheel needs to be re-waxed every 30 to 50 seconds or so in the polishing process. The service life of the polishing wax is obviously shortened, and meanwhile, a large amount of dust in a polishing room floats, so that the health of polishing workers is seriously influenced. Meanwhile, a large amount of wax scale remains on the surface of the workpiece, making the cleaning process of the rear end more difficult.
Chinese patent CN 103342965 a discloses a super-finishing wax for stainless steel metal products, which mainly comprises fine-grained abrasive, grease, lubricant and gloss additive. The super-precision polishing wax is added with lubricating agents such as oleic acid and triethanolamine, so that the polishing wax is instantly liquefied on a polishing wheel in a high-temperature environment, raised powdery substances are avoided, and the consumption of the polishing wax is reduced to a certain extent; however, in actual construction, the melted polishing wax is gathered at the outer edge of the polishing wheel, and when the polishing wheel is contacted with a workpiece, a large amount of polishing wax is still scraped and remained on the surface of the workpiece.
Disclosure of Invention
The invention aims to solve the technical problem that the static adsorption force, the wetting force and the like of polishing wax and a polishing cloth wheel are enhanced by using substances such as an abrasive, a grease auxiliary agent, a surfactant and the like which are subjected to surface functionalization modification, so that the defects of the prior art are overcome, and the invention aims to provide the stainless steel polishing wax which can obviously improve the durability of the polishing wax.
Based on the above purpose, the technical solution adopted by the invention to solve the above technical problems is as follows:
the stainless steel polishing wax comprises the following components in parts by weight:
preferably, the stainless steel polishing wax comprises the following components in parts by weight:
the main components of the conventional polishing wax at present are abrasive, fatty acid and wax. The convex part on the surface of the workpiece is removed by the cutting action of the abrasive material under high-speed rotation, so that the leveling effect is achieved. The fatty acids and waxes primarily act as lubricants during this process, thereby providing a polished workpiece surface with a bright finish. Such polishing waxes tend to accumulate on the outer edge of the wheel due to centrifugal forces during polishing due to the high temperatures generated by the constant friction. When the workpiece is contacted with the polishing wheel, part of polishing wax is directly splashed out, and a large amount of non-acted polishing wax is scraped by the workpiece and is adhered to the surface of the workpiece, so that thick wax dirt is formed. The invention adopts the abrasive material with surface functional modification, and the abrasive material is firmly locked on the polishing wheel through electrostatic adsorption force on the basis of keeping the performances of cutting and the like, so that the abrasive material is not easy to gather at the outer edge of the polishing wheel.
In some embodiments of the invention, the surface of the surface functionalized modified abrasive incorporates a cationic polyelectrolyte.
In some embodiments of the present invention, the method for preparing the surface-functionalized modified abrasive comprises the following steps:
and soaking the abrasive in alkali liquor, taking out the abrasive, and soaking the abrasive in a cationic polyelectrolyte solution to obtain the surface functionalized modified abrasive.
Preferably, the abrasive comprises one or more of silicon oxide, chromium oxide, iron oxide, magnesium oxide, aluminum oxide, cerium oxide, zirconium oxide and diamond. In some embodiments, the abrasive is one or both of alumina and zirconia. Preferably, the mass ratio of alumina to zirconia in the abrasive is 5-15: 1-3. More preferably, the mass ratio of alumina to zirconia in the abrasive is 10-11: 1-3. It should be understood that one skilled in the art would readily appreciate that various abrasives may be mixed prior to preparing the surface functionalized modified abrasive; or, the various abrasives are respectively prepared into the surface functionalized modified abrasives, and then the prepared surface functionalized modified abrasives are mixed.
Preferably, the abrasive has a D50 particle size of between 0.2 and 0.3 μm.
Preferably, the alkali solution is at least one of a potassium hydroxide solution, a sodium hydroxide solution and a calcium hydroxide solution. Preferably, the concentration of the alkali liquor is 5-30%. Because alkali has certain corrosion capacity on the abrasive, the invention uses alkali liquor to treat the abrasive, for example, the abrasive is soaked in the alkali liquor or sprayed by the alkali liquor, thereby increasing the roughness of the surface of the abrasive and improving the capillary action of the surface of the abrasive. Preferably, the abrasive is soaked in the alkali liquor for 5-30 min.
Preferably, the cationic polyelectrolyte is polydiallyldimethylammonium chloride. Preferably, the cationic polyelectrolyte solution is an ethanol solution of poly (diallyldimethylammonium chloride). Preferably, the concentration of the cationic polyelectrolyte solution is 0.5-3%. Because the abrasive surface has a large number of pores after being soaked in the alkali liquor, when the abrasive is treated by the cationic polyelectrolyte, for example, the abrasive is soaked in a cationic polyelectrolyte solution, or the abrasive is sprayed by the cationic polyelectrolyte solution, so that the cationic polyelectrolyte can be accumulated in the pores on the abrasive surface, for example, the abrasive surface adsorbs polydiallyldimethylammonium chloride to carry positive charges, and thus, the surface functionalization modification of the abrasive is realized.
Preferably, the abrasive is soaked in alkali liquor, washed and dried after being taken out, and then soaked in the cationic polyelectrolyte solution.
Preferably, the temperature of the cationic polyelectrolyte solution is 60-85 ℃.
In some embodiments, the oil is one or both of stearic acid and glyceryl stearate. Preferably, the mass ratio of stearic acid to glyceryl stearate in the grease is 1-3: 1-3.
In some embodiments, the grease adjuvant is a cationic bisstearamide. The cationic bisstearamide used in some embodiments of the invention can be prepared by reference to "preparation of cationic bisstearamide and its use in neutral sizing" (preparation of cationic bisstearamide and its use in neutral sizing [ "J]Chinese paper 2006,25(9):9-11.), which describes a specific synthetic procedure for cationic bisstearamide, comprising the following steps: mixing glyceryl monostearate and diethylenetriamine, stirring at about 120 deg.C for 2 hr, cooling to 95 deg.C, and adding dimethyl sulfate ((CH)3)2SO4) Then reacting for 30 min; adding hot water and stirring vigorously to obtain cationic bisstearamide; wherein n (synthetic ester) n (amine) n ((CH)3)2SO4)＝1∶1∶(0.5～1.2)。
According to the invention, the cationic distearamide is used as the grease auxiliary agent, and after the cationic distearamide is mixed with grease components, the grease components of the polishing wax are all positively charged due to the special structure of the cation, so that the grease components can not gather at the outer edge of the polishing wheel when the polishing wheel rotates at a high speed. The molecular structure of the cationic bis-stearic acid amide simultaneously contains two stearic acid groups and amide groups, so that the cationic bis-stearic acid amide has excellent lubricating and brightening effects. The grease mainly plays a role of a lubricant, and can reduce the frictional resistance in the abrasive cutting process and reduce the surface temperature of stainless steel in the polishing process, so that the polished surface is not easy to burn. Meanwhile, the polished surface is smooth and bright. The brightener adopted in the invention is liquid at normal temperature, and grease substances are easily taken away together in the polishing process, so that the surface gloss of the stainless steel is greatly improved.
In some embodiments of the invention, the brightener is a polyhydroxy synthetic ester. The preparation of the polyhydroxy synthetic esters employed in some embodiments of the invention may be referred toThe preparation of polyhydroxy synthetic ester is described in the example of CN 110923718A "A Water soluble polishing solution and its preparation method". The method of preparing a polyhydroxy synthetic ester employed in some embodiments of the present invention comprises the steps of: pentaerythritol, octanoic acid and catalyst NaHSO4And water-carrying agent toluene, wherein the molar ratio of toluene to water-carrying agent toluene is 0.5: 0.5: 0.15: 1.5, heating and refluxing for 3h at 110 ℃, and evaporating toluene at 135 ℃ to obtain a yellow solid substance; and (3) washing the yellow solid matter for 2 times, and recrystallizing to obtain crystals, namely the polyhydroxy synthetic ester.
In some embodiments of the invention, the fluorocarbon surfactant is a non-ionic fluorocarbon surfactant. In some embodiments of the invention, the fluorocarbon surfactant is at least one of DuPont Capsule FS-34 or Capsule FS-3100. The non-ionic fluorocarbon surfactant adopted by the invention takes fluorocarbon chains as non-polar groups and polyoxyethylene as polar groups, wherein fluorine atoms partially or completely replace hydrogen atoms on the hydrocarbon chains, so that the fluorocarbon surfactant has extremely low surface tension; the extremely low surface tension is beneficial to the infiltration of the polishing wax to the polishing cloth wheel under the melting condition, so that the polishing wax is uniformly loaded on the polishing cloth wheel.
The invention also provides a preparation method of the stainless steel polishing wax, which comprises the following steps:
mixing brightener, surfactant, grease and grease auxiliary agent, heating and stirring to obtain a mixture;
adding the surface functionalized modified abrasive into the obtained mixture, heating and stirring to obtain stainless steel polishing wax powder;
and processing and forming the obtained stainless steel polishing wax powder to obtain the stainless steel polishing wax.
Preferably, mixing the brightener, the surfactant, the grease and the grease auxiliary agent, heating to 120-180 ℃, and stirring; or at a temperature of 120 ℃ and 180 ℃. More preferably, heating to 130-; or at a temperature of 130 ℃ and 160 ℃.
Preferably, the brightener, the surfactant, the grease and the grease auxiliary agent are mixed, heated and stirred for 15-40min at the stirring speed of 40-60 r/min.
Preferably, the surface-functionalized modified abrasive is added to the resulting mixture, heated, and stirred at a stirring speed of 40-60 rpm for 15-40 min.
In some embodiments of the present invention, the stainless steel polishing wax powder is molded to obtain the stainless steel polishing wax. In some embodiments, the stainless steel polishing wax powder is poured into a mold, cooled to room temperature, and then demolded to obtain the stainless steel polishing wax.
Specifically, the preparation method of the stainless steel polishing wax comprises the following steps:
mixing brightener, surfactant, grease and grease auxiliary agent, heating to 120-180 ℃ and stirring; or stirring at the temperature of 120-180 ℃ for 15-40min at the stirring speed of 40-60 r/min to obtain a mixture;
adding the surface functionalized modified abrasive into the obtained mixture, heating to 120-180 ℃, and stirring; or stirring at the temperature of 120-180 ℃ for 15-40min at the stirring speed of 40-60 r/min to obtain the stainless steel polishing wax powder;
and molding the obtained stainless steel polishing wax powder to obtain the stainless steel polishing wax.
More specifically, the preparation method of the stainless steel polishing wax comprises the following steps:
sequentially adding the brightener, the surfactant, the grease and the grease auxiliary agent into a stirring kettle according to the parts by weight for mixing, and heating to the temperature of 120-; or stirring at the temperature of 120-180 ℃ for 15-40min at the stirring speed of 40-60 r/min to obtain a mixture;
adding the surface functionalized modified abrasive into the obtained mixture according to the parts by weight, heating to 120-180 ℃, and stirring; or stirring at the temperature of 120-180 ℃ for 15-40min at the stirring speed of 40-60 r/min to obtain the stainless steel polishing wax powder;
and pouring the obtained stainless steel polishing wax powder into a mold, cooling to room temperature, and demolding to obtain the stainless steel polishing wax.
The invention has the beneficial effects that:
according to the polishing wax, the polishing wax is enabled to keep excellent cutting, lubricating and brightening effects through the synergistic effect of the abrasive, the grease auxiliary agent, the grease, the brightening agent and the fluorocarbon surfactant, and meanwhile, the polishing wax is enabled not to fall off from the surface of the polishing cloth wheel easily through enhancing the electrostatic adsorption force of the abrasive, the grease component and the cloth wheel, so that the durability of the polishing wax is improved remarkably.
Detailed Description
The invention will now be further illustrated by reference to specific examples, which are intended to be illustrative of the invention and are not intended to be a further limitation of the invention.
Example 1
The preparation method of the surface functionalized modified abrasive material of the embodiment is as follows:
soaking the alumina with the particle size of D50 being 0.2-0.3 mu m in a 10% sodium hydroxide solution for 20min, then cleaning and drying, then soaking in an ethanol solution containing 1% polydiallyldimethylammonium chloride at 80 ℃ for 10min to obtain the surface functionalized modified abrasive of the embodiment 1, and naturally airing.
Example 2
The preparation method of the surface functionalized modified abrasive material of the embodiment is as follows:
respectively soaking alumina and zirconia with the particle size of D50 being 0.2-0.3 mu m in 8% sodium hydroxide solution for 25min, then cleaning and drying, then soaking in ethanol solution containing 1.5% of poly (diallyldimethylammonium chloride) at 75 ℃ for 12min to respectively obtain surface functionalized modified alumina and surface functionalized modified zirconia, naturally airing, and then performing surface functionalized modified alumina and surface functionalized modified zirconia according to the mass ratio of 10: 3 to obtain the surface functional modified abrasive of the example 2.
Example 3
The preparation method of the surface functionalized modified abrasive material of the embodiment is as follows:
soaking a mixture (mass ratio is 11: 1) of alumina and zirconia with the D50 particle size of 0.2-0.3 mu m in 15% sodium hydroxide solution for 15min, then cleaning and drying, and then soaking in an ethanol solution containing 0.9% polydiallyldimethylammonium chloride at 85 ℃ for 18min to obtain the surface functionalized modified abrasive of the embodiment 3, and naturally airing.
Example 4
The stainless steel polishing wax of the embodiment is composed of the following components by weight:
wherein the oil is stearic acid; the fluorocarbon surfactant is DuPont Capstone FS-34 nonionic fluorocarbon surfactant.
The grease auxiliary agent is cationic bisstearamide; the preparation method of the cationic bisstearamide comprises the following steps: mixing glyceryl monostearate and diethylenetriamine, stirring at about 120 deg.C for 2 hr, cooling to 95 deg.C, and adding dimethyl sulfate ((CH)3)2SO4) Then reacting for 30 min; adding hot water and stirring vigorously to obtain cationic bisstearamide; wherein n (synthetic ester) n (amine) n ((CH)3)2SO4)＝1∶1∶(0.5～1.2)。
The brightener is polyhydroxy synthetic ester; the preparation method of the polyhydroxy synthetic ester comprises the following steps: pentaerythritol, octanoic acid and catalyst NaHSO4And water-carrying agent toluene, wherein the molar ratio of toluene to water-carrying agent toluene is 0.5: 0.5: 0.15: 1.5, heating and refluxing for 3h at 110 ℃, and evaporating toluene at 135 ℃ to obtain a yellow solid substance; and (3) washing the yellow solid matter for 2 times, and recrystallizing to obtain crystals, namely the polyhydroxy synthetic ester.
The preparation method of the stainless steel polishing wax of the embodiment comprises the following steps:
(1) adding the brightener, the surfactant, the grease and the grease auxiliary agent into a stirring kettle in sequence according to the weight for mixing, heating to 150 ℃, and stirring for 25min at the stirring speed of 55 revolutions per minute to obtain a mixture;
(2) adding the surface functionalized modified abrasive into the obtained mixture according to the weight, and continuously stirring for 35min to obtain stainless steel polishing wax powder;
(3) the obtained stainless steel polishing wax powder was poured into a mold, cooled to room temperature, and then demolded to obtain the stainless steel polishing wax of the present example.
The stainless steel polishing wax obtained in this example was used for subsequent polishing tests.
Example 5
The stainless steel polishing wax of the embodiment is composed of the following components by weight:
wherein the grease is a mixture of stearic acid and glyceryl stearate (mass ratio is 1: 1); the fluorocarbon surfactant is DuPont Capstone FS-3100 nonionic fluorocarbon surfactant; the other components were the same as in example 4 except that the weight fraction was adjusted.
This example was carried out in the same manner as example 4.
The stainless steel polishing wax obtained in this example was used for subsequent polishing tests.
Example 6
The stainless steel polishing wax of the embodiment is composed of the following components by weight:
except for the surface-functionalized modified abrasive, the other components were the same as in example 4, and only the weight fraction was adjusted.
The preparation method of the stainless steel polishing wax of the embodiment comprises the following steps:
(1) adding the brightener, the surfactant, the grease and the grease auxiliary agent into a stirring kettle in sequence according to the weight for mixing, heating to 140 ℃, and stirring for 35min at the stirring speed of 45 revolutions per minute to obtain a mixture;
(2) adding the surface functionalized modified abrasive into the obtained mixture according to the weight, and continuously stirring for 25min to obtain stainless steel polishing wax powder;
(3) the obtained stainless steel polishing wax powder was poured into a mold, cooled to room temperature, and then demolded to obtain the stainless steel polishing wax of the present example.
The stainless steel polishing wax obtained in this example was used for subsequent polishing tests.
Example 7
The stainless steel polishing wax of the embodiment is composed of the following components by weight:
except for the surface functional modified abrasive, the other components were the same as in example 5 except that the weight fraction was adjusted.
This example was carried out in the same manner as example 6.
The stainless steel polishing wax obtained in this example was used for subsequent polishing tests.
Example 8
The stainless steel polishing wax of the embodiment is composed of the following components by weight:
wherein the grease is a mixture of stearic acid and glyceryl stearate (mass ratio is 2: 1); the other components were the same as in example 4 except that the weight fraction was adjusted.
The preparation method of the stainless steel polishing wax of the embodiment comprises the following steps:
(1) adding the brightener, the surfactant, the grease and the grease auxiliary agent into a stirring kettle in sequence according to the weight for mixing, heating to 160 ℃, stirring for 30min at the stirring speed of 50 revolutions per minute, and polishing the wax by using stainless steel to obtain a mixture;
(2) adding the surface functionalized modified abrasive into the obtained mixture according to the weight, and continuously stirring for 30min to obtain stainless steel polishing wax powder;
(3) the obtained stainless steel polishing wax powder was poured into a mold, cooled to room temperature, and then demolded to obtain the stainless steel polishing wax of the present example.
The stainless steel polishing wax obtained in this example was used for subsequent polishing tests.
Comparative example 1
The comparative example is a fine polishing wax in the prior art, and consists of the following components in parts by weight:
comparative example 1 a fine polishing wax was prepared as follows:
adding aluminum oxide, mixed stearic acid, oleic acid, triethanolamine, rosin, barium petroleum sulfonate and citric acid into a stirring kettle according to a formula, mixing, heating to 150 ℃, and stirring for 60min at a stirring speed of 50 revolutions per minute to obtain polishing wax powder; and pouring the obtained polishing wax powder into a mold, cooling to room temperature, and demolding to obtain the fine polishing wax of the comparative example 1.
The wax finish polished in comparative example 1 was used for subsequent polishing tests.
Polishing test example 1
The test method comprises the following steps: and selecting stainless steel nameplates with consistent surface roughness after middle polishing, respectively adhering the stainless steel polishing wax of the examples 4-8 and the fine polishing wax of the comparative example 1 on a polishing cloth wheel by using a manipulator for polishing, wherein the waxing time is controlled to be 8s each time, and the polishing time of a single stainless steel nameplate is controlled to be 20 s. After each waxing, 10 stainless steel nameplates were polished successively and repeated 10 times. And (4) after the polished stainless steel nameplate is cleaned by paraffin removal water, testing the surface roughness, judging to be qualified if the surface roughness is lower than 0.01 mu m, and counting the number of qualified stainless steel nameplate pieces. The test results are shown in table 1.
TABLE 1 comparative table for testing rust and oil removing
| Polishing wax | Number of qualified stainless steel nameplate pieces |
| Example 4 | 68 |
| Example 5 | 65 |
| Example 6 | 71 |
| Example 7 | 67 |
| Example 8 | 64 |
| Comparative example 1 | 22 |
As can be seen from Table 1, the stainless steel plates of examples 4-8 that were acceptable for polishing all exceeded 60 plates, while the comparative example had only 22 plates under the same conditions. Thus, it can be derived: according to the embodiment of the invention, at least 6 stainless steel nameplates can be polished by single waxing of the stainless steel polishing wax, and only 2 stainless steel nameplates can be polished by a comparative example under the same condition, so that the durability of the polishing wax can be obviously improved, and the polishing wax has high practical application value.
The above description is only an example of the present invention, and should not be taken as limiting the scope of the present invention. Insubstantial changes from the disclosed embodiments, variations from or substitutions to one or more other processes, or other insubstantial changes from the disclosed embodiments, as viewed in light of the above teachings, are intended to be covered by the present invention.
Claims (10)
1. A surface functional modification abrasive is characterized in that a cationic polyelectrolyte is combined on the surface of the abrasive.
2. The surface-functionalized modified abrasive according to claim 1, wherein the cationic polyelectrolyte is poly (diallyldimethylammonium chloride).
3. The method for preparing the surface-functionalized modified abrasive according to claim 1 or 2, comprising the steps of:
and soaking the abrasive in alkali liquor, taking out the abrasive, and soaking the abrasive in a cationic polyelectrolyte solution to obtain the surface functionalized modified abrasive.
4. The method according to claim 3, wherein the abrasive has a D50 particle size of 0.2-0.3 μm.
5. The stainless steel polishing wax is characterized by comprising the following components in parts by weight:
wherein the surface-functionalized modified abrasive is the surface-functionalized modified abrasive of claim 1 or 2.
6. The stainless steel polishing wax of claim 5, wherein the grease is one or both of stearic acid and glyceryl stearate.
7. The stainless steel polishing wax of claim 5, wherein the grease auxiliary agent is cationic bis-stearamide.
8. The stainless steel polishing wax of claim 5, wherein the brightener is a polyhydroxy synthetic ester.
9. The stainless steel polishing wax of claim 5, wherein the fluorocarbon surfactant is a non-ionic fluorocarbon surfactant.
10. The method of making a stainless steel polishing wax of any of claims 5-9, comprising the steps of:
mixing brightener, surfactant, grease and grease auxiliary agent, heating and stirring to obtain a mixture;
adding the surface functionalized modified abrasive into the obtained mixture, heating and stirring to obtain stainless steel polishing wax powder;
and processing and forming the obtained stainless steel polishing wax powder to obtain the stainless steel polishing wax.
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| CN112500800B (en) | 2022-05-10 |
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