CN113442069B - Fine grinding honing oilstone and preparation method and application thereof - Google Patents
Fine grinding honing oilstone and preparation method and application thereof Download PDFInfo
- Publication number
- CN113442069B CN113442069B CN202110738875.1A CN202110738875A CN113442069B CN 113442069 B CN113442069 B CN 113442069B CN 202110738875 A CN202110738875 A CN 202110738875A CN 113442069 B CN113442069 B CN 113442069B
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- China
- Prior art keywords
- silver
- honing
- tin
- pure copper
- wetting agent
- Prior art date
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- 238000000227 grinding Methods 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 31
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052802 copper Inorganic materials 0.000 claims abstract description 26
- 239000010949 copper Substances 0.000 claims abstract description 26
- 229910052709 silver Inorganic materials 0.000 claims abstract description 26
- 239000004332 silver Substances 0.000 claims abstract description 26
- 239000000080 wetting agent Substances 0.000 claims abstract description 26
- 229910052718 tin Inorganic materials 0.000 claims abstract description 25
- 239000011135 tin Substances 0.000 claims abstract description 24
- 229910003460 diamond Inorganic materials 0.000 claims description 16
- 239000010432 diamond Substances 0.000 claims description 16
- 239000004575 stone Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 10
- 238000005245 sintering Methods 0.000 claims description 10
- 238000000498 ball milling Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 15
- 239000002994 raw material Substances 0.000 abstract description 15
- 239000003082 abrasive agent Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 12
- 239000002245 particle Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000007550 Rockwell hardness test Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/08—Honing tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to a finely grinding honing oilstone and a preparation method and application thereof, wherein a raw material formula of the oilstone comprises pure copper, tin, silver, an abrasive and a wetting agent, wherein the tin accounts for 22-28% of the total mass of the raw material formula, the silver accounts for 8-13% of the total mass of the raw material formula, the abrasive accounts for 2-8% of the total mass of the raw material formula, the wetting agent accounts for 0.5-3% of the total mass of the raw material formula, and the balance is pure copper. The invention adopts specific amounts of pure copper, tin and silver, and a certain amount of abrasive and wetting agent are matched, so that the prepared fine grinding honing oilstone has high efficiency and high precision when in honing processing, is used for honing fine grinding processing of an engine cylinder body, and ensures high surface integrity and reticulate pattern uniformity of the cylinder body during fine grinding.
Description
Technical Field
The invention belongs to the field of abrasive dies, and particularly relates to a fine grinding honing oilstone, and a preparation method and application thereof.
Background
The whetstone is a strip-shaped consolidated grinding tool prepared by adopting abrasive materials, binding agents and the like, is inlaid on a honing rod or a honing head to finish the surface of a finish workpiece, can process the inner surface, the outer surface, the plane, the spherical surface and the like of a cylindrical hole, and has the characteristics of high processing precision, good surface integrity, wide processing range and the like. And one of the important factors influencing the processing quality during the oilstone is that the quality of the oilstone directly influences the quality of products.
For workpieces of different materials or with machining precision, targeted oilstones are required to be selected for machining, and for honing of engine cylinder bodies, rough grinding is usually carried out first, and then fine grinding is carried out. The rough grinding is mainly used for removing the allowance in the early stage when the allowance of the workpiece is larger, and generally, the allowance is 5-20 wires, namely, rough grinding is firstly selected for grinding, and the allowance is controlled below 3-5 wires; finish grinding means a grinding mode adopted when the machining allowance of a workpiece is small and the precision requirement is high, the finish grinding and grinding removal allowance is small, the stress residue on the surface of the workpiece is small, the surface integrity is good, the roughness is low and the precision is high. Thus, for rough grinding and fine grinding, two different whetstones are used.
Patent CN105922148a discloses a fine grinding disc for rough polishing of the surface of an optical component, which consists of diamond and metal bond, and the specific components and weight percentages of the fine grinding disc are: 70-88% of copper powder, 10-20% of tin powder, 1-5% of silver powder and 1-5% of diamond (the granularity range W40-W5). However, the fine grinding disc is developed for rough polishing of the surface of an optical component, has low efficiency in processing the engine cylinder body, is difficult to control reticulate patterns, and is not suitable for honing processing of the engine cylinder body.
Therefore, no matter workpieces made of different materials or processing precision is required to be processed by selecting targeted grinding stones, but the finish grinding honing stone for the engine cylinder body on the market at present has low efficiency, poor precision, poor integrity of the processed surface of the workpiece, uneven reticulate patterns of the inner hole of the cylinder body, large internal stress and low reliability.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a fine grinding honing stone for honing an engine cylinder body with high efficiency and high precision and a preparation method thereof.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The raw material formula of the finish grinding honing oilstone comprises pure copper, tin, silver, an abrasive and a wetting agent, wherein the tin accounts for 22-28% of the total mass of the raw material formula, the silver accounts for 8-13% of the total mass of the raw material formula, the abrasive accounts for 2-8% of the total mass of the raw material formula, the wetting agent accounts for 0.5-3% of the total mass of the raw material formula, and the balance is pure copper.
The invention adopts the pre-mixing of specific metal (pure copper, tin and silver) powder, the granularity and the purity of each powder are strictly controlled, the wetting agent is added after the pre-alloy powder is mixed, the ball milling is carried out to improve the surface activity of the powder, promote the sintering crystallization, facilitate the sintering, then the grinding material is added for mixing, and then the sintering is carried out.
In some preferred and specific embodiments, the raw material formulation of the whetstone consists of the following components in weight percent: 55-65% of pure copper, 22-28% of tin, 8-13% of silver, 2-8% of abrasive and 0.5-3% of wetting agent.
Preferably, the abrasive is diamond powder with the particle size of 0.025-0.035 mm.
Preferably, the wetting agent is one or more of paraffin, PVA and ethanol.
Preferably, the pure copper is pure copper powder with the grain diameter of 0.005-0.01 mm and the purity of more than or equal to 99.9%.
Preferably, the tin is tin powder with the grain diameter of 0.005-0.01 mm and the purity of 99.99% or more.
Preferably, the silver is silver powder with the particle size of 0.01-0.015 mm and the purity of 99.9% or more.
The invention adopts another technical scheme that: the preparation method of the fine grinding honing oilstone comprises the steps of mixing pure copper, tin and silver, adding a wetting agent for ball milling, adding an abrasive for uniform mixing, and sintering at 600-700 ℃ under the pressure of 8-12 MPa to obtain the oilstone.
Further, the ball milling is carried out in a ball mill, and the ball milling time is 1-3 hours; the grinding material is added and mixed in a mixer for 1-3 h.
The sintering adopts a German import fully automatic hot press DSP510.
The invention adopts another technical scheme that: the application of the fine grinding honing stone in the honing process of the engine cylinder body is disclosed. Can realize controllable reticulate pattern parameters of the cylinder body platform and meet the requirements of high-speed, high-efficiency and high-precision honing processing.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the invention adopts specific amounts of pure copper, tin and silver, and a certain amount of abrasive and wetting agent are matched, so that the prepared fine grinding honing oilstone has high efficiency and high precision when in honing processing, is used for honing fine grinding processing of an engine cylinder body, and ensures high surface integrity and reticulate pattern uniformity of the cylinder body during fine grinding.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to specific examples, but the practice and protection scope of the present invention is not limited thereto.
Example 1
The fine grinding honing stone for the fine grinding processing of the engine cylinder block provided by the embodiment comprises the following components: 60% pure copper, 24% tin, 10% silver, 5% diamond, and 1% wetting agent. Wherein, the pure copper adopts pure copper powder with the grain diameter of 0.005mm and the purity of 99.9 percent; the tin is atomized tin powder with the particle size of 0.005mm and the purity of 99.9 percent; the silver is electrolytic silver powder with the grain diameter of 0.01mm and the purity of 99.9 percent; the diamond is MDA620 25/35; the wetting agent is liquid paraffin.
The preparation method of the oilstone comprises the following steps: mixing pure copper powder, tin powder and silver powder uniformly, adding a wetting agent, ball milling in a ball mill for 2 hours to improve the surface activity of the powder, adding abrasive diamond, mixing in a mixer for 2 hours, weighing, transferring and sintering to obtain whetstone, wherein a German imported fully-automatic hot press DSP510 is adopted as a sintering machine, the temperature is precisely controlled, the heating is uniform, and the sintering temperature is 660 ℃ and the pressure is 10MPa.
Example 2
The fine grinding honing stone for the fine grinding processing of the engine cylinder block provided by the embodiment comprises the following components: 58% of pure copper, 26% of tin, 10% of silver, 5% of diamond and 1% of wetting agent, wherein the pure copper is 0.01mm, and the purity of the pure copper is 99.9%; the grain diameter of tin is 0.01mm, and the purity is 99.9%; the grain diameter of the silver is 0.015mm, and the purity is 99.9%; the diamond is MDA62035/45; PVA is used as the wetting agent.
Otherwise, the same as in example 1 was conducted.
Example 3
The fine grinding honing stone for the fine grinding processing of the engine cylinder block provided by the embodiment comprises the following components: 63% pure copper, 22% tin, 12% silver, 2% diamond and 1% wetting agent, wherein the particle size of the pure copper is 0.008mm; the grain size of tin is 0.008mm; the grain diameter of the silver is 0.01mm; the diamond is selected from MAD620 35/45; the wetting agent is ethanol.
Otherwise, the same as in example 1 was conducted.
Example 4
The fine grinding honing stone for the fine grinding processing of the engine cylinder block provided by the embodiment comprises the following components: 59% pure copper, 24% tin, 9% silver, 7% diamond, and 1% wetting agent.
Otherwise, the same as in example 1 was conducted.
Comparative example 1
The fine grinding honing stone provided in this comparative example was the same as in example 1 except that a wetting agent was not added.
The concrete raw materials comprise the following components: 61% pure copper, 24% tin, 10% silver and 5% diamond.
Comparative example 2
The accurate grinding honing oilstone provided in this comparative example comprises the following specific raw materials: 75% pure copper, 15% tin, 4% silver, 5% diamond, and 1% wetting agent.
Otherwise, the same as in example 1 was conducted.
Comparative example 3
The accurate grinding honing oilstone provided in this comparative example comprises the following specific raw materials: 63% pure copper, 26% tin, 5% silver, 5% diamond, and 1% wetting agent.
Otherwise, the same as in example 1 was conducted.
Comparative example 4
The accurate grinding honing oilstone provided in this comparative example comprises the following specific raw materials: 56% pure copper, 30% tin, 10% silver, 3% diamond, and 1% wetting agent.
Otherwise, the same as in example 1 was conducted.
Comparative example 5
In the finely ground honing stone provided in this comparative example, the particle size of the silver powder was 0.005mm, otherwise as in example 1.
Performance testing
The results of grinding tests on the same engine block were carried out by using the oilstones of examples 1 to 4 and comparative examples 1 to 5, and are shown in table 1.
Table 1 shows the results of performance tests of the oilstones of examples 1 to 4 and comparative examples 1 to 5
In table 1, the relative density test method is: GB/T4472-2011.
The Rockwell hardness test method comprises the following steps: GB/T230.1-2004.
The method for testing the bending strength comprises the following steps: GB/T232-2010.
The grinding efficiency test method comprises the following steps: GB/T10155-1999.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (4)
1. The fine grinding honing oilstone for honing the engine cylinder body is characterized by comprising the following components in percentage by weight: 55-65% of pure copper, 22-24% of tin, 8-9% of silver, 5-8% of abrasive and 0.5-3% of wetting agent;
The abrasive is diamond powder with the grain diameter of 0.025-0.035 mm;
the grain diameter of the silver is 0.01-0.015 mm;
the pure copper is pure copper powder with the grain diameter of 0.005-0.01 mm and the purity of more than or equal to 99.9%;
the tin is tin powder with the grain diameter of 0.005-0.01 mm and the purity of more than or equal to 99.99%;
The silver is silver powder with the purity of more than or equal to 99.9%;
The wetting agent is one or more of paraffin, PVA and ethanol;
The preparation method of the fine grinding honing oilstone comprises the steps of mixing pure copper, tin and silver, adding a wetting agent for ball milling, adding an abrasive for uniform mixing, and sintering at 600-700 ℃ under the pressure of 8-12 MPa to obtain the oilstone.
2. A method of making a fine honing stone as claimed in claim 1, characterized by: the method comprises the steps of mixing pure copper, tin and silver, adding a wetting agent for ball milling, adding an abrasive for uniform mixing, and sintering at 600-700 ℃ under the pressure of 8-12 MPa to obtain the oilstone.
3. A method of preparing a fine grinding honing stone according to claim 2, characterized by: the ball milling is carried out in a ball mill, and the ball milling time is 1-3 h; the grinding material is added and mixed in a mixer for 1-3 h.
4. Use of the fine honing stone of claim 1 in an engine block honing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110738875.1A CN113442069B (en) | 2021-06-30 | 2021-06-30 | Fine grinding honing oilstone and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110738875.1A CN113442069B (en) | 2021-06-30 | 2021-06-30 | Fine grinding honing oilstone and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113442069A CN113442069A (en) | 2021-09-28 |
| CN113442069B true CN113442069B (en) | 2024-08-06 |
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| CN202110738875.1A Active CN113442069B (en) | 2021-06-30 | 2021-06-30 | Fine grinding honing oilstone and preparation method and application thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686671A (en) * | 2005-04-27 | 2005-10-26 | 上海爱华粉体材料有限公司 | Honing bar for ultrafine processing and its preparation technology |
| CN105922148A (en) * | 2016-06-25 | 2016-09-07 | 河南工业大学 | Accurate grinding piece for surface rough polishing of optical device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5358968B2 (en) * | 2008-02-19 | 2013-12-04 | 日立工機株式会社 | Metal bond grinding wheel |
| CN102233540B (en) * | 2011-04-12 | 2013-05-29 | 安泰科技股份有限公司 | Honing strip and manufacturing method thereof |
| CN105772730B (en) * | 2016-03-10 | 2018-07-06 | 江苏耐尔特钻石有限公司 | A kind of preparation method of diamond honing oil stone |
| CN109093122B (en) * | 2018-08-27 | 2021-04-06 | 天津百恩威新材料科技有限公司 | Cutting type diamond cutter and preparation method thereof |
| CN110509192B (en) * | 2019-07-08 | 2021-10-12 | 郑州磨料磨具磨削研究所有限公司 | Metal glass bonding agent and preparation method thereof, grinding wheel and preparation method and application thereof |
-
2021
- 2021-06-30 CN CN202110738875.1A patent/CN113442069B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686671A (en) * | 2005-04-27 | 2005-10-26 | 上海爱华粉体材料有限公司 | Honing bar for ultrafine processing and its preparation technology |
| CN105922148A (en) * | 2016-06-25 | 2016-09-07 | 河南工业大学 | Accurate grinding piece for surface rough polishing of optical device |
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| CN113442069A (en) | 2021-09-28 |
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