CN109054746B - Grinding fluid for mirror surface treatment of steel die surface and use method - Google Patents
Grinding fluid for mirror surface treatment of steel die surface and use method Download PDFInfo
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- CN109054746B CN109054746B CN201810940580.0A CN201810940580A CN109054746B CN 109054746 B CN109054746 B CN 109054746B CN 201810940580 A CN201810940580 A CN 201810940580A CN 109054746 B CN109054746 B CN 109054746B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1454—Abrasive powders, suspensions and pastes for polishing
- C09K3/1472—Non-aqueous liquid suspensions
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- C—CHEMISTRY; METALLURGY
- 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
The invention provides a grinding fluid for mirror surface treatment of a steel die surface, which comprises the following raw materials in parts by weight: 2-8 parts of 1-10um natural diamond powder, 2-8 parts of 0.05-0.3um natural diamond powder, 0.5-3 parts of glycerol, 0.5-4 parts of single crystal diamond powder, 0.1-1 part of stearic acid and 80-90 parts of deionized water. The use method of the grinding fluid comprises the following steps: (1) deionized water is heated. (2) Adding stearic acid and glycerol, and stirring. (3) Then adding 2.5um natural diamond powder to obtain the crude grinding liquid. (4) The coarse grinding fluid was applied to the steel mold surface for 10 min. (5) Adding 0.15um natural diamond powder and single crystal diamond powder into the coarse grinding liquid to obtain fine grinding liquid, and continuously grinding the surface of the mold by using the fine grinding liquid until the surface is bright. The grinding fluid can well strengthen the mirror surface effect, has no scratch on the surface of a die and is horizontally bright, and can be used for clearly imaging like a plane mirror.
Description
Technical Field
The invention relates to a grinding fluid, in particular to a grinding fluid for mirror surface treatment of a steel die surface and a using method thereof.
Background
In recent years, the mold industry in China has developed very rapidly. With the adjustment of the global economic industry structure, the proportion of the mold market in China in the world mold output value is remarkably improved, and the fact that China will inevitably develop into a large mold manufacturing country is determined. Meanwhile, as a die material for manufacturing and producing a die foundation, the using amount of die steel is also remarkably increased, the die industry and the die steel market prospect in China are good, and the demand of the die steel is increased. According to the requirements of the current state of the mold industry, in order to meet the development requirements of the modern mold industry, the precision requirement of the mold is higher and higher, and the requirement for achieving the mirror surface effect after high-precision polishing is higher and higher. It is well known that the surface roughness of the mold has a considerable influence on the quality and life of the product and the mold itself. Domestic and foreign researches show that the performance level, the quality and the selection of the heat treatment process of the die steel are important factors influencing the service life of the die. According to investigation, the surface roughness of the die is improved by one level, and the service life of the die can be prolonged by 50%. When the existing mould grinding fluid is used for grinding, the surface roughness of the mould is large, the grinding time is consumed for a long time during machining, round edges are easy to appear, gaps are easy to exist, the mould grinding fluid is not black and bright enough, the laser engraving effect is poor, the problems of gaps and round edges are easy to appear in products, and the products are easy to scrap. Particularly for the DC53 steel die with larger and larger use amount at present, no grinding liquid with better quality is found in the prior art for grinding the surface of the die into a mirror surface effect because of the characteristics of good wear resistance and the like.
Disclosure of Invention
In order to solve the technical problems, the invention provides a grinding fluid for mirror surface treatment of a steel die surface. The grinding fluid can solve the problem of poor mirror surface treatment effect of the surface of the existing steel mould, can well enhance the mirror surface effect, has no scratch on the surface of the mould, is horizontally bright, and can clearly image like a plane mirror. The preparation and application methods of the grinding fluid are simple and easy, convenient and fast, and easy to popularize and apply.
The invention also provides a using method of the grinding fluid for mirror surface treatment of the surface of the steel die.
The invention relates to a grinding fluid for mirror surface treatment of a steel die surface, which comprises the following raw materials in parts by weight:
1-10 μm natural diamond powder: 2-8 parts of (by weight),
0.05-0.3 μm natural diamond powder: 2-8 parts of (by weight),
glycerol: 0.5 to 3 portions of the raw materials,
0.05-0.3 μm single crystal diamond powder: 0.5 to 4 portions of the raw materials,
stearic acid: 0.1-1 part of (A) to obtain,
deionized water: 80-90 parts.
Preferably, the weight parts of the components are as follows:
2.5 μm natural diamond powder: 4-5 parts of (A) a solvent,
0.15 μm natural diamond powder: 5-6 parts of (A) a stabilizer,
glycerol: 1.2 to 1.5 portions of,
0.15 μm single crystal diamond powder: 1.5-2 parts of (A),
stearic acid: 0.3 to 0.5 portion of,
deionized water: 85-88 parts.
Most preferably, the weight parts of the components are as follows:
2.5 μm natural diamond powder: 4.5 parts of (A) a reaction product,
0.15 μm natural diamond powder: 5.5 parts of (C), and (C),
glycerol: 1.3 parts of (A) a stabilizer,
0.15 μm single crystal diamond powder: 1.8 parts of (C), and (C),
stearic acid: 0.4 part by weight of a reaction kettle,
deionized water: 86 parts of the raw materials.
The natural diamond powder used in the grinding fluid is ground by natural diamond, the hardness of the natural diamond powder is higher than that of artificial diamond, and the single crystal diamond powder is an artificial diamond product and has lower hardness than that of the natural diamond. The natural diamond powder with the diameter of 1-10 mu m is mainly used for processing the steel surface to be flat, and the natural diamond powder with the diameter of 0.05-0.3 mu m is mainly used for processing the steel surface to be smooth. The single crystal diamond powder is mainly used for treating and brightening the steel surface. According to a large number of experiments, the invention discovers that the three components with different hardness and different particle sizes are combined together, and the addition sequence, the addition amount and the like are controlled, so that the components have respective division of labor and supplement each other, and a good synergistic effect is achieved, and impurities and rusty spots on the surface of the steel die can be effectively removed by adding the stearic acid. The glycerol can lubricate, dissipate heat and cool, and can effectively dissipate heat by adding the glycerol because heat can be generated during grinding the die. By scientifically proportioning and combining the components, the mirror surface treatment effect of the die is good, and a large amount of time is saved.
The raw materials of the grinding fluid of the present invention include, but are not limited to, the above components, and other raw materials or auxiliary agents may be added according to the actual situation. Such as suspending agents, surfactants, friction modifiers, and the like.
The use method of the grinding fluid for mirror surface treatment of the surface of the steel die can be divided into two modes, wherein the first mode comprises the following steps:
(1) deionized water was heated to 70 ℃.
(2) Adding stearic acid and glycerol into the hot deionized water, stirring uniformly, and cooling to 20-25 ℃.
(3) Then adding natural diamond powder with the particle size of 1-10 mu m, natural diamond powder with the particle size of 0.05-0.3 mu m and monocrystalline diamond powder into the solution, and uniformly stirring to obtain the grinding fluid.
(4) And (3) acting the grinding fluid on the surface of the steel die for 10-30min until the surface of the die is bright and flat.
The second use mode comprises the following steps:
(1) deionized water was heated to 70 ℃.
(2) Adding stearic acid and glycerol into the hot deionized water, stirring uniformly, and cooling to 20-25 ℃.
(3) And (3) adding 1-10 mu m natural diamond powder into the solution obtained in the step (2), and uniformly stirring to obtain a coarse grinding fluid.
(4) And (3) acting the coarse grinding fluid on the surface of the steel die for 10min to smooth the surface.
(5) Adding 0.05-0.3 μm natural diamond powder and single crystal diamond powder into the coarse grinding liquid, stirring to obtain fine grinding liquid, grinding the steel mould surface treated in step (4) with the fine grinding liquid for 15min, and treating the steel mould surface to be bright.
The second mode of use preferably comprises the steps of:
(1) deionized water was heated to 70 ℃.
(2) Adding stearic acid and glycerol into the hot deionized water, stirring uniformly, and cooling to 20-25 ℃.
(3) And (3) adding 2.5 mu m natural diamond powder into the solution obtained in the step (2), and uniformly stirring to obtain a coarse grinding fluid.
(4) Placing the steel die into a die clamping groove in a direction that a grinding surface of the steel die faces downwards as required, enabling the steel die to be in contact with a sand table, continuously guiding coarse grinding fluid to the sand table, enabling the sand table, the grinding fluid and the grinding surface of the die to be in contact grinding repeatedly for 10min, and removing impurities on the surface of the die to enable the surface treatment to be smooth. A stirring device is arranged in a container for containing grinding fluid, and the stirring device rotates and stirs at a constant speed all the time in the whole grinding process, wherein the rotating speed is 35 r/s.
(5) Then adding 0.15 μm natural diamond powder and 0.15 μm single crystal diamond powder into the coarse grinding liquid and stirring uniformly to obtain fine grinding liquid. And (4) placing the steel mould processed and leveled in the step (4) with the surface facing downwards into a mould clamping groove to make the steel mould contact with a sand table. And continuously guiding the fine grinding fluid to the sand table to enable the grinding surface of the sand table, the grinding fluid and the mould to be repeatedly contacted and ground. And (4) performing continuous action for 15min at the sand table rotating speed of 30 revolutions per second and the air pressure of 1pa, treating the surface of the steel mould to be bright, and cleaning the mould to finish the preparation.
The invention relates to an application of a grinding fluid for mirror surface treatment of a steel die in a DC53 steel die. The grinding fluid of the invention can be applied to all steel dies, such as chrome steel and the like, and is preferably used for DC53 steel dies. Because DC53 steel is harder, more durable, and more wear resistant than other types of steel, other steel molds are more deformable over time because of their lower hardness than DC53 steel. Because of these properties of DC53 steel, it is difficult to find a suitable polishing slurry for DC53 steel to polish a good mirror surface effect, although the demand for DC 8932 steel is increasing.
Advantageous effects
Compared with the prior polishing solution, the polishing solution has the following advantages:
1. the method reduces the mirror-surface treatment time of the steel die, improves the efficiency, and finds that the mirror-surface treatment time can be saved by more than 40 percent compared with the prior grinding liquid or other grinding methods by using the grinding liquid, and the treatment effect is good.
2. The steel mould grinding fluid in the prior art has poor mirror surface effect treatment, so that the problems of scratching and round edges of products are easy to occur, the products are easy to scrap, and the laser engraving effect is poor. The grinding liquid of the invention can well strengthen the mirror surface effect, the surface of the grinding tool has no scratch and is horizontally bright, the grinding tool can clearly image like a plane mirror, and the laser engraving is more convenient.
3. The production cost is saved. The invention has simple raw material components and convenient use and operation.
4. The treatment effect accords with the product expectation, and the product rejection rate is reduced.
5. The method can be used for grinding the scrapped steel die product with poor mirror effect or unqualified mirror surface effect treated by the existing method again, and waste is reduced.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention.
Example 1
The grinding fluid for mirror surface treatment of the surface of the steel die comprises the following raw materials in parts by weight:
2.5 μm natural diamond powder: 4.5 parts of (A) a reaction product,
0.15 μm natural diamond powder: 5.5 parts of (C), and (C),
glycerol: 1.3 parts of (A) a stabilizer,
0.15 μm single crystal diamond powder: 1.8 parts of (C), and (C),
stearic acid: 0.4 part by weight of a reaction kettle,
deionized water: 86 parts of the raw materials.
The grinding fluid of the embodiment 1 is applied to the surface of a DC53 steel die, and the preparation and use method comprises the following steps:
(1) deionized water was heated to 70 ℃.
(2) Adding stearic acid and glycerol into deionized water, stirring uniformly, and cooling to 20-25 ℃.
(3) And (3) adding 2.5 mu m natural diamond powder into the solution obtained in the step (2), and uniformly stirring to obtain a coarse grinding fluid.
(4) Placing the DC53 steel die into the die clamping groove in the direction that the grinding surface faces downwards as required, enabling the DC53 steel die to be in contact with the sand table, continuously guiding the coarse grinding fluid to the sand table, enabling the sand table, the grinding fluid and the grinding surface of the die to be in repeated contact grinding for 10min, removing impurities on the surface of the die, and flattening the surface. A stirring device is arranged in a container for containing grinding fluid, and the stirring device rotates and stirs at a constant speed all the time in the whole grinding process, wherein the rotating speed is 35 r/s.
(5) Then adding 0.15 μm natural diamond powder and 0.15 μm single crystal diamond powder into the coarse grinding liquid and stirring uniformly to obtain fine grinding liquid. And (4) placing the steel mould processed and leveled in the step (4) with the surface facing downwards into a mould clamping groove to make the steel mould contact with a sand table. And continuously guiding the fine grinding fluid to the sand table to enable the grinding surface of the sand table, the grinding fluid and the mould to be repeatedly contacted and ground. And (3) the rotating speed of the sand table is 30 r/s, the sand table continuously acts for 15min, the air pressure is 1pa, the surface of the steel mould is treated to be bright, and the mould is cleaned for later use.
The raw material components and contents of examples 2-13 are shown in table 1 below:
TABLE 1
Examples 2-13 were prepared and used, each example being prepared using the same procedure as in example 1 except that the parts of the starting materials were different, and the other conditions including the application of the DC53 steel mold batch were the same as in example 1.
Example 14
The composition of the slurry formulation of example 14 was exactly the same as example 1, i.e.:
2.5 μm natural diamond powder: 4.5 parts of (A) a reaction product,
0.15 μm natural diamond powder: 5.5 parts of (C), and (C),
glycerol: 1.3 parts of (A) a stabilizer,
0.15 μm single crystal diamond powder: 1.8 parts of (C), and (C),
stearic acid: 0.4 part by weight of a reaction kettle,
deionized water: 86 parts of the raw materials.
The grinding fluid of example 14 was applied to the surface of the same batch of DC53 steel molds as in example 1, and was prepared by using a method comprising the following steps:
(1) deionized water was heated to 70 ℃.
(2) Adding stearic acid and glycerol into the hot deionized water, stirring uniformly, and cooling to 20-25 ℃.
(3) Then adding 2.5 μm natural diamond powder, 0.15 μm natural diamond powder and single crystal diamond powder into the solution, and stirring uniformly to obtain the grinding fluid.
(4) The DC53 steel mold was placed into the mold pocket with the desired abrasive side down and in contact with the sand table. And continuously guiding the final grinding fluid to the sand table to repeatedly contact and grind the grinding surfaces of the sand table, the grinding fluid and the die. And (4) cleaning the die for later use by continuously acting for 25min at the rotating speed of the sand table of 30 revolutions per second and under the air pressure of 1 pa.
Comparative example 1
The grinding fluid of comparative example 1 was composed of the following raw materials in parts by weight:
2.5 μm natural diamond powder: 11.8 parts of (C), by weight,
glycerol: 1.3 parts of (A) a stabilizer,
stearic acid: 0.4 part by weight of a reaction kettle,
deionized water: 86 parts of the raw materials.
The grinding fluid of comparative example 1 was applied to the surface of the same batch of DC53 steel molds as in example 1, and was prepared by using a method comprising the following steps:
(1) deionized water was heated to 70 ℃.
(2) Adding stearic acid and glycerol into hot deionized water, stirring, and cooling to 20-25 deg.C.
(3) And (3) adding 2.5 mu m natural diamond powder into the solution obtained in the step (2), and uniformly stirring to obtain the grinding fluid. The DC53 steel mold was placed into the mold pocket with the desired abrasive side down and in contact with the sand table. And continuously guiding the final grinding fluid to the sand table to repeatedly contact and grind the grinding surfaces of the sand table, the grinding fluid and the die. And (4) cleaning the die for later use by continuously acting for 25min at the rotating speed of the sand table of 30 revolutions per second and under the air pressure of 1 pa.
Comparative example 2
The grinding fluid of comparative example 2 was composed of the following raw materials in parts by weight:
0.15 μm natural diamond powder: 11.8 parts of (C), by weight,
glycerol: 1.3 parts of (A) a stabilizer,
stearic acid: 0.4 part by weight of a reaction kettle,
deionized water: 86 parts of the raw materials.
The grinding fluid of comparative example 2 was applied to the surface of the same batch of DC53 steel molds as in example 1, and was prepared by using a method comprising the following steps:
(1) deionized water was heated to 70 ℃.
(2) Adding stearic acid and glycerol into hot deionized water, stirring, and cooling to 20-25 deg.C.
(3) And (3) adding 0.15 mu m natural diamond powder into the solution obtained in the step (2) and uniformly stirring to obtain the grinding fluid. The DC53 steel mold was placed into the mold pocket with the desired abrasive side down and in contact with the sand table. And continuously guiding the final grinding fluid to the sand table to repeatedly contact and grind the grinding surfaces of the sand table, the grinding fluid and the die. And (4) cleaning the die for later use by continuously acting for 25min at the rotating speed of the sand table of 30 revolutions per second and under the air pressure of 1 pa.
Comparative example 3
The grinding fluid of comparative example 3 was composed of the following raw materials in parts by weight:
glycerol: 1.3 parts of (A) a stabilizer,
0.15 μm single crystal diamond powder: 11.8 parts of (C), by weight,
stearic acid: 0.4 part by weight of a reaction kettle,
deionized water: 86 parts of the raw materials.
The grinding fluid of comparative example 3 was applied to the surface of the same batch of DC53 steel molds as in example 1, and was prepared by using a method comprising the following steps:
(1) deionized water was heated to 70 ℃.
(2) Adding stearic acid and glycerol into hot deionized water, stirring, and cooling to 20-25 deg.C.
(3) Adding single crystal diamond powder into the solution obtained in the step (2) and uniformly stirring to obtain final grinding liquid, placing the DC53 steel mould with the grinding surface facing downwards into a mould clamping groove, and enabling the DC53 steel mould to be in contact with a sand table. And continuously guiding the final grinding fluid to the sand table to repeatedly contact and grind the grinding surfaces of the sand table, the grinding fluid and the die. The rotating speed of the sand table is 30 r/s, the sand table continuously acts for 25min, the air pressure is 1pa, and the surface of the steel mould is treated to be bright. And cleaning the die for later use.
A commercially available polishing slurry was purchased as a control and used to polish DC53 steel molds of the same lot and specification as in example 1, and the performance indexes of the molds were tested after the polishing experiments of the above examples and comparative examples and control were completed, and the results are shown in table 2 below:
TABLE 2
As can be seen from the results of Table 2, the DC53 steel mold polished by the polishing slurry of the present invention has significantly improved mold surface roughness and mirror effect. And a large number of practices prove that the product rejection rate is obviously reduced by using the grinding fluid grinding steel die.
Claims (4)
1. A using method of grinding fluid for mirror surface treatment of a steel die surface is characterized in that the grinding fluid comprises the following components in parts by weight:
1-10 μm natural diamond powder: 2-8 parts of (by weight),
0.05-0.3 μm natural diamond powder: 2-8 parts of (by weight),
glycerol: 0.5 to 3 portions of the raw materials,
0.05-0.3 μm single crystal diamond powder: 0.5 to 4 portions of the raw materials,
stearic acid: 0.1-1 part of (A) to obtain,
deionized water: 80-90 parts of a solvent;
the use method of the grinding fluid comprises the following steps:
(1) heating deionized water to 70 ℃;
(2) adding stearic acid and glycerol into hot deionized water, stirring uniformly, and cooling to 20-25 ℃;
(3) adding 1-10 μm natural diamond powder into the solution obtained in step (2), and uniformly stirring to obtain a coarse grinding fluid;
(4) the coarse grinding fluid acts on the surface of the steel die for 10min, and the surface is processed to be smooth;
(5) adding natural diamond powder and single crystal diamond powder with the particle size of 0.05-0.3 mu m into the coarse grinding liquid, uniformly stirring to prepare fine grinding liquid, grinding the surface of the steel mould which is treated and leveled in the step (4) by using the fine grinding liquid for 15min, and treating the surface of the steel mould to be bright;
the steel mold is a DC53 steel mold.
2. The use method of the polishing solution for mirror surface treatment of the surface of a steel die as claimed in claim 1, wherein the components are in parts by weight:
2.5 μm natural diamond powder: 4-5 parts of (A) a solvent,
0.15 μm natural diamond powder: 5-6 parts of (A) a stabilizer,
glycerol: 1.2 to 1.5 portions of,
0.15 μm single crystal diamond powder: 1.5-2 parts of (A),
stearic acid: 0.3 to 0.5 portion of,
deionized water: 85-88 parts.
3. The use method of the polishing solution for mirror surface treatment of the surface of a steel die as claimed in claim 2, characterized in that the components in parts by weight are as follows:
2.5 μm natural diamond powder: 4.5 parts of (A) a reaction product,
0.15 μm natural diamond powder: 5.5 parts of (C), and (C),
glycerol: 1.3 parts of (A) a stabilizer,
0.15 μm single crystal diamond powder: 1.8 parts of (C), and (C),
stearic acid: 0.4 part by weight of a reaction kettle,
deionized water: 86 parts of the raw materials.
4. The method of claim 1, wherein the step of applying the polishing slurry to mirror the surface of the steel mold comprises the steps of:
(1) heating deionized water to 70 ℃;
(2) adding stearic acid and glycerol into hot deionized water, stirring uniformly, and cooling to 20-25 ℃;
(3) adding 2.5 mu m natural diamond powder into the solution obtained in the step (2), and uniformly stirring to obtain a coarse grinding fluid;
(4) placing the steel mould into a mould clamping groove in a direction that a grinding surface is downward as required to enable the steel mould to be in contact with a sand table, continuously guiding coarse grinding fluid to the sand table, enabling the sand table, the grinding fluid and the grinding surface of the mould to be in contact grinding repeatedly for 10min, and removing impurities on the surface of the mould to enable the surface to be smooth; a stirring device is arranged in a container for containing grinding fluid, and the stirring device rotates and stirs at constant speed all the time in the whole grinding process, wherein the rotating speed is 35 r/s;
(5) adding natural diamond powder with the particle size of 0.15 mu m and monocrystalline diamond powder with the particle size of 0.15 mu m into the coarse grinding fluid and uniformly stirring to obtain fine grinding fluid; placing the steel mould processed and leveled in the step (4) with the surface facing downwards into a mould clamping groove to contact with a sand table; continuously guiding the fine grinding fluid to the sand table to repeatedly contact and grind the sand table, the grinding fluid and the grinding surface of the mold; and (4) performing continuous action for 15min at the sand table rotating speed of 30 revolutions per second and the air pressure of 1pa, treating the surface of the steel mould to be bright, and cleaning the mould to finish the preparation.
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| CN105778862A (en) * | 2016-04-08 | 2016-07-20 | 云南民族大学 | Diamond grinding paste easy to clean and preparation method thereof |
| CN107304347A (en) * | 2016-04-18 | 2017-10-31 | 云南民族大学 | A kind of method that utilization ultrasonic wave prepares diamond paste |
| CN107603492A (en) * | 2017-10-20 | 2018-01-19 | 山东重山光电材料股份有限公司 | A kind of environment-friendly type diamond grinding fluid and its preparation technology |
| CN108161584A (en) * | 2018-01-18 | 2018-06-15 | 蒋秋菊 | A kind of Ultraprecise polished method of metal works |
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