CN113234419A - Flexible sand, preparation method and application thereof - Google Patents
Flexible sand, preparation method and application thereof Download PDFInfo
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- CN113234419A CN113234419A CN202110468400.5A CN202110468400A CN113234419A CN 113234419 A CN113234419 A CN 113234419A CN 202110468400 A CN202110468400 A CN 202110468400A CN 113234419 A CN113234419 A CN 113234419A
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- sand
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- corundum
- metal
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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
- C09K3/1436—Composite particles, e.g. coated particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
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- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to flexible sand, a preparation method and application thereof, and belongs to the technical field of sand blasting materials. The flexible sand is prepared from the following components: 50-65 parts of corundum sand, 20-40 parts of organic silicon resin and 15-20 parts of adhesive. The preparation of the flexible sand comprises the steps of taking 50-65 parts of corundum sand, heating and stirring; adding 20-40 parts of organic silicon resin into the heated corundum sand, and uniformly stirring to obtain corundum sand with the surface coated with the organic silicon resin; adding 15-20 parts of adhesive into the corundum sand coated with the organic silicon resin on the surface, and uniformly stirring to obtain a mixture; drying and refining the obtained mixture, and then screening the mixture through a 100-mesh standard sieve to obtain the flexible sand. The flexible sand is applied to the sand blasting treatment of the metal surface. The flexible sand can effectively remove oxide skin or oxide on the surface of metal, has short removal time, saves the production cost, improves the production efficiency, improves the surface quality of parts, has no influence on the processing of the parts, and is easy for mass production.
Description
Technical Field
The invention relates to the technical field of sand blasting materials, in particular to flexible sand, a preparation method and application thereof.
Background
With the development of science and technology, new materials are widely applied to the field of parts and processing, and the amount of blank casting and forging processing is increasing day by day. During the processing of metal blanks and heat treatment, a large amount of oxide scale and oxides appear on the metal surface.
The traditional clearing method has the problems of environmental pollution, low efficiency, labor and time waste, low abrasive recovery rate and the like, and is not suitable for batch production. At the same time, the processing cost is higher and higher, so that people begin to search for new processing methods. However, in the new processing method, common white corundum sand or brown corundum sand is mostly adopted during sand blasting or sand blowing, when metal oxide skin or oxide is removed, parts are easy to be damaged, the size of the parts is changed, the surface roughness is not ideal, and the working efficiency is low. In view of the above, it is necessary to provide a flexible sand, a preparation method and an application thereof to solve the deficiencies of the prior art.
Disclosure of Invention
The invention provides flexible sand, a preparation method and application thereof, aiming at solving the technical problems, the flexible sand forms flexible wire claws by wrapping an organic silicon resin coating on the outer layer, so that the flexible sand is used for removing oxide skin and oxide on the surface of metal in a flexible manner, the speed is high, the uniformity is high, and the roughness of the surface of the metal is greatly improved.
The invention provides flexible sand for achieving one of the purposes.
The technical scheme for solving the technical problems is as follows: the flexible sand is prepared from the following components in parts by mass:
50-65 parts of corundum sand, 20-40 parts of organic silicon resin and 15-20 parts of adhesive.
The flexible sand can effectively remove oxide skin or oxide on the surface of metal. The wire claw formed by the resin on the surface of the flexible sand is in contact with the metal surface, so that no harmful gas is discharged and no pollution component exists. The resin loss degree can be judged according to the surface color of the flexible sand, the resin can be recycled and used in a covering mode, energy consumption is reduced, the removing time is shortened, the surface roughness is improved, the production cost is saved, the production efficiency is improved, the surface quality of parts is improved, no influence is caused on the machined parts, the manufacturing process is simple, and mass production is easy.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the corundum sand is one or two of white corundum sand and brown corundum sand.
The beneficial effect of adopting the further scheme is that: the white corundum sand and/or brown corundum sand are adopted, so that the integral rigidity of the flexible sand can be ensured.
Furthermore, the corundum sand is 150-200 meshes.
The beneficial effect of adopting the further scheme is that: the corundum sand with the granularity range can remove oxide layers or burrs on the surface of metal well.
Further, the organic silicon resin is epoxy resin.
The beneficial effect of adopting the further scheme is that: the epoxy resin can form a flexible coating layer on the surface of the corundum sand, and can flexibly remove oxide skin or oxide on the surface of metal.
Further, the adhesive is an epoxy resin adhesive or a white latex adhesive.
The beneficial effect of adopting the further scheme is that: the epoxy resin adhesive or the white latex adhesive is adopted, so that the curing effect can be achieved, and the stable structure of the flexible sand is ensured.
The invention also provides a preparation method of the flexible sand.
The technical scheme for solving the technical problems is as follows: a preparation method of flexible sand comprises the following steps:
s1: taking 50-65 parts of corundum sand, and heating and stirring to obtain heated corundum sand;
s2: adding 20-40 parts of organic silicon resin into the heated corundum sand obtained in the step S1, and uniformly stirring to obtain corundum sand with the surface coated with organic silicon resin;
s3: adding 15-20 parts of adhesive into the corundum sand coated with the organic silicon resin on the surface obtained in the step S2, and uniformly stirring to obtain a mixture;
s4: drying the mixture obtained in the step (3) to obtain a dried mixture;
s5: and (4) refining the dried mixture obtained in the step (4) and then screening the refined mixture through a standard sieve of 100 meshes to obtain the flexible sand.
The preparation method of the flexible sand can fully mix the corundum sand, the organic silicon resin and the adhesive, can prepare the flexible sand into flexible solid particles through the adhesive and drying of the oven, and can process cast parts, forged parts, heat-treated parts and machined parts to remove surface oxide scales, oxides and rusty spots.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, in step S1, the heating temperature is 80 +/-10 ℃, the stirring time is 1.5-2 h, and the speed is 30 r/min.
The beneficial effect of adopting the further scheme is that: under the stirring of the temperature, the adhesion effect of the organic silicon resin and the surface of the corundum can be improved, the contact area of the organic silicon resin and the outer surface of the corundum is improved, the adhesion effect is good, in addition, at the temperature, the organic silicon resin is dehydrated and can be adhered and coated on the surface of the corundum, and the adhesion of the organic silicon resin can be further promoted when the organic silicon resin is added into an adhesive, so that the curing treatment is facilitated.
Further, in step S4, the drying temperature is 40 ± 10 ℃ for 24 hours.
The beneficial effect of adopting the further scheme is that: at the drying temperature, the corundum sand, the organic silicon resin and the adhesive can be dehydrated and cured.
The invention provides the application of the flexible sand in the sand blasting treatment of the metal surface to achieve the third aim.
The technical scheme for solving the technical problems is as follows: the application of the flexible sand in the sand blasting treatment of the metal surface.
It is easy to understand that when the metal surface is processed, the flexible sand forms high-speed sand flow by adopting sand blasting equipment, the high-speed sand flow acts on the metal surface to remove oxides, burrs and the like on the metal surface, meanwhile, the rigid contact between the flexible sand and the metal surface is avoided, the abrasion to the metal surface is reduced, and the processing effect is good.
The invention has the beneficial effects that: the flexible sand is adopted to process a metal casting part, a metal forging part, a metal heat treatment part and a metal machining part, so that the quality of products in the sand blasting process can be effectively ensured.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the metal is any one of a metal casting, a metal forging, a metal heat treatment and a metal machining.
The beneficial effect of adopting the further scheme is that: the flexible sand is adopted to carry out sand blasting treatment on the metal casting part, the metal forging part, the metal heat treatment part and the metal machining part, oxide layers, burrs and the like on the surface of the metal can be effectively removed, the machining precision is ensured, and meanwhile, the workpiece with better surface roughness is obtained.
Detailed Description
The principles and features of this invention are described below in conjunction with specific embodiments, which are set forth merely to illustrate the invention and are not intended to limit the scope of the invention.
Example 1
The preparation method of the flexible sand comprises the following steps:
adding 55 parts of white corundum with 150-200 meshes into a stirrer for stirring, heating at 80 ℃, stirring for 2 hours at a stirring speed of 30r/min, gradually adding 20 parts of 650-type epoxy resin produced by a Jining resin factory into the stirrer, fully stirring for 0.5 hour, adding 20 parts of 650-type epoxy resin adhesive produced by the Jining resin factory, curing, taking out the mixture, placing the mixture into an oven, drying for 24 hours at 40 ℃, taking out the mixture after drying, refining and crushing by using a crusher, and sieving by using a 100-mesh sieve to obtain the flexible sand.
Example 2
The preparation method of the flexible sand comprises the following steps:
adding 55 parts of white corundum with 150-200 meshes into a stirrer for stirring, heating at 80 ℃, stirring for 2 hours at a stirring speed of 30r/min, gradually adding 30 parts of 650-type epoxy resin produced by a Jining resin factory into the stirrer, fully stirring for 0.5 hour, adding 20 parts of 650-type epoxy resin adhesive produced by the Jining resin factory, curing, taking out the mixture, placing the mixture into an oven, drying for 24 hours at 40 ℃, taking out the mixture after drying, refining and crushing by using a crusher, and sieving by using a 100-mesh sieve to obtain the flexible sand.
The surface of the I-stage turbine cast blade is treated by the flexible sand prepared in the embodiment through sand blasting equipment, and then the surface roughness of the basin and the back of the I-stage turbine cast blade is detected by a surface profile measuring instrument according to the JJF-1099-2018 standard.
Example 3
The preparation method of the flexible sand comprises the following steps:
adding 55 parts of white corundum with 150-200 meshes into a stirrer for stirring, heating at 80 ℃, stirring for 2 hours at a stirring speed of 30r/min, gradually adding 40 parts of 650-type epoxy resin produced by a Jining resin factory into the stirrer, fully stirring for 0.5 hour, adding 20 parts of 650-type epoxy resin adhesive produced by the Jining resin factory, curing, taking out the mixture, drying at 40 ℃ for 24 hours, taking out the mixture after drying, refining and crushing by using a crusher, and sieving by using a sieve of 100 meshes to obtain the flexible sand.
Comparative example 1
This comparative example differs from examples 1-3 in that: only the white corundum sand with the grain size of 150-200 meshes, which is the same as that of the white corundum sand in the embodiment 1-3, is used as the contrast sand, the white corundum sand is placed in a stirrer before use, stirred for 2 hours at the temperature of 80 ℃, and taken out for later use.
Carrying out sand blasting treatment on the metal surface: and taking the white corundum sand, treating the surface of the I-grade turbine cast blade by adopting sand blasting equipment, and then detecting the surface roughness of a blade basin and a blade back of the I-grade turbine cast blade by adopting a surface profile measuring instrument according to JJF-1099 and 2018 standards.
Comparative example 2
This comparative example differs from examples 1-3 in that: only the brown corundum sand of 150-200 meshes is used as contrast sand, the brown corundum sand is placed in a stirrer before use, stirred for 2 hours at the temperature of 80 ℃, and taken out for later use.
Carrying out sand blasting treatment on the metal surface: taking the brown corundum sand, treating the surface of the I-grade turbine cast blade by adopting sand blasting equipment, and then detecting the surface roughness of a blade basin and a blade back of the I-grade turbine cast blade by adopting a surface profile measuring instrument according to JJF-1099 and 2018 standards.
The performance test comprises the following steps:
three pieces of white paper for testing were prepared, 10g of the flexible sand prepared in examples 1 to 3 were applied to the white paper, respectively, so that a detection layer having the same thickness as the diameter of the flexible sand was attached to the white paper, and the color and shape of the flexible sand on the detection layer were observed with a magnifier under white light irradiation.
The color results for the flexible sands prepared in examples 1-3 are shown in the following table:
| color results | |
| Example 1 | Yellow colour |
| Example 2 | Brown yellow |
| Example 3 | Brown colour |
And (3) testing results:
example 1 is yellow, indicating that the thickness of the epoxy resin attached to the surface of the white corundum sand is too low or not completely coated;
example 2 is brown-yellow, indicating that the epoxy resin attached to the surface of the white corundum sand has the optimal thickness;
example 3 is brown, indicating that the silicone resin is too thick on the surface of the white corundum sand.
Performance test 2
The flexible sand prepared in example 2, comparative example 1 and comparative example 2 was used to sand blast the surface of a class i turbine cast blade, and the results of the sand blast test are shown in the following table:
| leaf basin | Leaf back | |
| Examples | Ra1.05 | Ra2.20 |
| Comparative example 1 | Ra2.03 | Ra1.89 |
| Comparative example 2 | Ra3.35 | Ra3.91 |
The experimental results are as follows: the surface roughness of the flexible sand obtained by using the white corundum sand, the organic silicon resin and the adhesive in the mixture ratio of the embodiment 2 for processing the I-grade turbine cast blade is superior to that of the comparative example 1 using the white corundum sand alone and that of the comparative example 2 using the brown corundum sand alone, and the results show that the flexible sand prepared in the embodiment 2 of the invention can be used for processing casting parts, forging parts, heat treatment parts and mechanical processing parts, can remove surface oxide scales, oxides and rusts, effectively reduce the damage to the metal surface in the metal surface treatment process, and has good processing effect. Therefore, the prepared flexible sand can be used for the sand blasting treatment of the metal surface.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The flexible sand is characterized by being prepared from the following components in parts by mass:
50-65 parts of corundum sand, 20-40 parts of organic silicon resin and 15-20 parts of adhesive.
2. The flexsand of claim 1, wherein the corundum sand is white corundum sand and/or brown corundum sand.
3. The flexible sand of claim 1 or 2, wherein the corundum sand has a particle size of 150 to 200 mesh.
4. The flexible sand of claim 1 wherein the silicone resin is an epoxy resin.
5. A flexible sand as claimed in claim 1 wherein the binder is an epoxy binder or a white latex binder.
6. A method of making a flexible sand according to any one of claims 1 to 5 comprising the steps of:
s1: taking 50-65 parts of corundum sand, and heating and stirring to obtain heated corundum sand;
s2: adding 20-40 parts of organic silicon resin into the heated corundum sand obtained in the step S1, and uniformly stirring to obtain corundum sand with the surface coated with organic silicon resin;
s3: adding 15-20 parts of adhesive into the corundum sand coated with the organic silicon resin on the surface obtained in the step S2, and uniformly stirring to obtain a mixture;
s4: drying the mixture obtained in the step (3) to obtain a dried mixture;
s5: and (4) refining the dried mixture obtained in the step (4) and then screening the refined mixture through a standard sieve of 100 meshes to obtain the flexible sand.
7. The method for preparing the flexible sand according to claim 6, wherein in the step S1, the heating temperature is 80 +/-10 ℃, the stirring time is 1.5-2 h, and the speed is 30 r/min.
8. The method for preparing the flexible sand of claim 6, wherein in the step S4, the drying temperature is 40 +/-10 ℃ and the drying time is 24 h.
9. Use of the flexible sand of any one of claims 1 to 5 in a metal surface blasting process.
10. The use according to claim 9, wherein the metal is any one of a metal cast part, a metal forged part, a metal heat treated part and a metal machined part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110468400.5A CN113234419A (en) | 2021-04-28 | 2021-04-28 | Flexible sand, preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110468400.5A CN113234419A (en) | 2021-04-28 | 2021-04-28 | Flexible sand, preparation method and application thereof |
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| CN113234419A true CN113234419A (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110468400.5A Pending CN113234419A (en) | 2021-04-28 | 2021-04-28 | Flexible sand, preparation method and application thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1178894A (en) * | 1966-10-29 | 1970-01-21 | Nippon Toki Kk | Improvements in or relating to Abrasive Compositions |
| GB1421438A (en) * | 1972-04-19 | 1976-01-21 | Sherwin Williams Co | Process for preparing grinding articles |
| CN102245351A (en) * | 2008-12-22 | 2011-11-16 | 圣戈班磨料磨具有限公司 | Rigid or flexible, macro-porous abrasive article |
| CN103481211A (en) * | 2013-08-31 | 2014-01-01 | 福州双屹砂轮有限公司 | High-precision grinding consolidation flexible sand wheel and manufacturing method thereof |
| CN104227575A (en) * | 2014-09-15 | 2014-12-24 | 陕西德赛新材料科技有限公司 | Grinding unit implantation-based flexible grinding tool preparation method |
-
2021
- 2021-04-28 CN CN202110468400.5A patent/CN113234419A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1178894A (en) * | 1966-10-29 | 1970-01-21 | Nippon Toki Kk | Improvements in or relating to Abrasive Compositions |
| GB1421438A (en) * | 1972-04-19 | 1976-01-21 | Sherwin Williams Co | Process for preparing grinding articles |
| CN102245351A (en) * | 2008-12-22 | 2011-11-16 | 圣戈班磨料磨具有限公司 | Rigid or flexible, macro-porous abrasive article |
| CN103481211A (en) * | 2013-08-31 | 2014-01-01 | 福州双屹砂轮有限公司 | High-precision grinding consolidation flexible sand wheel and manufacturing method thereof |
| CN104227575A (en) * | 2014-09-15 | 2014-12-24 | 陕西德赛新材料科技有限公司 | Grinding unit implantation-based flexible grinding tool preparation method |
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Address after: No. 1198, yunhuan East Road, Baiyun District, Guiyang City, Guizhou Province Applicant after: Guizhou Dadeng Machinery Co.,Ltd. Address before: No. 1198, yunhuan East Road, Baiyun District, Guiyang City, Guizhou Province Applicant before: GUIZHOU DADONGFENG MACHINERY Co.,Ltd. |