CN110834226A - Magnesium alloy needle grinding method and product thereof - Google Patents
Magnesium alloy needle grinding method and product thereof Download PDFInfo
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- CN110834226A CN110834226A CN201810931754.7A CN201810931754A CN110834226A CN 110834226 A CN110834226 A CN 110834226A CN 201810931754 A CN201810931754 A CN 201810931754A CN 110834226 A CN110834226 A CN 110834226A
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- magnesium alloy
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- needle grinding
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- 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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- 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
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to the technical field of product grinding and fine finishing, in particular to a magnesium alloy needle grinding method and a product thereof. Setting needle grinding parameters on a magnetic polisher, wherein the parameters comprise needle grinding frequency, needle grinding time, translation frequency and exchange time; (2) preparing grinding fluid and arranging steel needles with corresponding weight according to the one-time processing quantity of the magnesium alloy workpieces; (3) putting a magnesium alloy workpiece into the grinding fluid; (4) after the needle grinding time, taking out the magnesium alloy workpiece; wherein, the magnesium alloy workpiece faces downwards with one side with more burrs and is contacted with a grinding liquid phase; when a plurality of rough edge surfaces need to be processed, the rough edge surfaces are placed in the grinding fluid one by one in a downward mode to be processed one by one. Compared with the prior art, the magnesium alloy product with brightness and beauty is obtained by driving the steel needle to move according to the direction of the magnetic field through the magnetic force, generating kinetic energy to impact the surface of the magnesium alloy product, and removing oil stains, oxide skin and burrs on the surface of the magnesium alloy.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of metal grinding and fine finishing, in particular to a magnesium alloy needle grinding method and a product thereof.
[ background of the invention ]
In the prior art, the grinding and polishing treatment of the surface of the magnesium alloy product usually uses a coating or electroplating method. However, the plating can only improve the appearance of the magnesium alloy workpiece to a limited extent, and the plating solution itself is not environmentally friendly. Before electroplating or paint spraying, the magnesium alloy workpiece is ground and polished to remove burrs, oxide scales and the like on the surface; in the process, a large amount of magnesium dust is generated, and when the concentration of the magnesium dust in a workshop is too high, the hidden danger of explosion exists.
In addition, because the processed magnesium alloy product has a complex structure, burrs in the gap of the product are difficult to remove in a direct grinding mode; further, the appearance of the magnesium alloy product obtained may be uneven in color distribution or dull in the overall gloss.
In view of the above, there is a need to develop a magnesium alloy needle grinding method and a product thereof, which can not only improve the appearance treatment effect of the magnesium alloy workpiece, but also reduce the risk of magnesium dust explosion.
[ summary of the invention ]
Therefore, the invention aims to provide a magnesium alloy needle grinding method. The method can greatly improve the appearance of the magnesium alloy workpiece and avoid the risk of magnesium dust explosion.
In order to achieve the above object, the magnesium alloy needle grinding method of the present invention comprises:
(1) setting needle grinding parameters on a magnetic polishing machine, wherein the needle grinding parameters comprise needle grinding frequency, needle grinding time, translation frequency and exchange time;
(2) preparing grinding fluid and arranging steel needles with corresponding weight according to the one-time processing quantity of the magnesium alloy workpieces;
(3) putting the magnesium alloy workpiece into the grinding fluid;
(4) after the needle grinding time, taking out the magnesium alloy workpiece;
the magnesium alloy workpiece is contacted with the grinding liquid phase in a way that the side with more burrs faces downwards; and when the magnesium alloy workpiece has a plurality of rough edge surfaces to be processed, the rough edge surfaces are placed in the grinding fluid one by one downwards for processing.
Optionally, the lapping frequency is 15-60Hz, the lapping time is 3-10min, the translation frequency is 10-30Hz, and the exchange time is 0.5-1.5 min.
Optionally, the magnesium alloy workpiece is formed by die casting, and the surface with more burrs is a male die surface; during needle grinding, the male die surface of the magnesium alloy workpiece faces downwards, and then the female die surface faces downwards for needle grinding.
Optionally, the number of the magnesium alloy workpieces in the step (2) is 10, and the total weight of the steel needle is set to be 5 kg.
Optionally, the grinding fluid in step (3) is stored in a plurality of grooves, and a plurality of magnesium alloy workpieces can be respectively placed in each groove for needle grinding.
Optionally, step (5) is further included after step (4), namely, the magnesium alloy workpiece is washed with water and then placed on a hollow product rack until being dried.
The invention also comprises a magnesium alloy product obtained by using the magnesium alloy needle grinding method.
Compared with the prior art, the magnesium alloy needle grinding method provided by the invention has the advantages that the steel needle is driven by magnetic force to move according to the direction of the magnetic field, kinetic energy is generated to impact the surface of the magnesium alloy product, and in the process, oil stains, oxide skin and burrs on the surface of the magnesium alloy product are removed, so that the magnesium alloy product with bright luster and very attractive appearance is obtained; and can carry out the needle grinding to a plurality of deckle edge faces of product. Therefore, the problem that the magnesium dust floats in a large amount to possibly cause explosion due to common grinding is solved.
[ description of the drawings ]
FIG. 1 is a schematic flow chart of the magnesium alloy needle grinding method of the present invention.
[ detailed description ] embodiments
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a magnesium alloy pin-grinding method according to the present invention. The following provides a preferred embodiment of grinding and polishing a magnesium alloy plate as a target for lapping.
The scene is provided with magnetic force burnishing machine, a plurality of cell bodies of placing the lapping liquid, be provided with the steel needle in the lapping liquid, the lapping liquid adopts and pure water 1: 10, and (3) preparing.
S101: setting needle grinding parameters on a magnetic polishing machine, wherein the needle grinding parameters comprise needle grinding frequency, needle grinding time, translation frequency and exchange time;
s102: preparing grinding fluid and arranging steel needles with corresponding weight according to the one-time processing quantity of the magnesium alloy workpieces; 0.5kg of steel needle is required to be arranged when each magnesium alloy flat plate piece is ground; since 10 magnesium alloy flat plate pieces need to be needle ground at one time, steel needles with the weight of 5kg are arranged in total;
s103: putting the magnesium alloy workpiece into the grinding fluid, namely immersing the rough edge surface of the magnesium alloy workpiece into the grinding fluid; because more burrs are the male die surface, the male die surface of the magnesium alloy workpiece is firstly needle ground, and then the female die surface is downwards needle ground.
S104: after the needle grinding time, taking out the magnesium alloy workpiece;
s105: and (3) washing the magnesium alloy workpiece, and then placing the magnesium alloy workpiece on a hollow product rack until the magnesium alloy workpiece is dried.
The invention also comprises a magnesium alloy product which is processed by using the magnesium alloy needle grinding method.
The needle grinding parameters in this embodiment are set as follows: the needle grinding frequency is 30Hz, the needle grinding time is 5min, the translation frequency is 20Hz, and the exchange time is 1 min; the needle grinding frequency refers to the moving speed of the steel needle, the needle grinding time refers to the total time of the steel needle impacting a workpiece to complete needle grinding, the translation frequency refers to the moving speed of the magnetic field, and the exchange time refers to the exchange time of clockwise rotation and anticlockwise rotation of the magnetic field.
Wherein the needle grinding frequency setting range is 15-60Hz, the needle grinding time setting range is 3-10min, the translation frequency setting range is 10-30Hz, and the exchange time setting range is 0.5-1.5 min. In this embodiment, only one set of parameters is selected.
In the needle grinding process, a certain surface of the workpiece is subjected to needle grinding within a certain time, and if the workpiece rolls over, the needle grinding of the surface is incomplete, so that the needle grinding effect is influenced; therefore, the size of the groove body is designed to be just enough to accommodate the preprocessed workpiece.
The needle grinding is carried out on workpieces in different shapes, and burr surfaces are immersed into needle grinding liquid one by one for processing; for example, if the workpiece is a cube, the six faces need to be individually immersed in the polishing liquid to be needle-polished. However, the work having a work thickness of less than 5mm can be directly subjected to needle polishing by directly immersing the work in the polishing liquid without turning the work during the needle polishing.
The polishing agent used in this embodiment is a brightener which is a colorless liquid and alkaline, and mainly comprises a surfactant, an auxiliary agent, sodium citrate, sodium gluconate and other components, and is mixed with pure water 1: 10 to prepare a grinding fluid. The polishing liquid used in the present invention is not limited to the above-described examples, but refers to various polishing liquids that can be used for polishing a magnesium alloy needle.
The magnetic polisher used in this embodiment is a full-automatic magnetic polisher of type NF-9808.
Compared with the prior art, the magnesium alloy needle grinding method provided by the invention has the advantages that the steel needle is driven by magnetic force to move according to the direction of the magnetic field, kinetic energy is generated to impact the surface of the magnesium alloy product, and in the process, oil stains, oxide skin and burrs on the surface of the magnesium alloy product are removed, so that the magnesium alloy product with bright luster and very attractive appearance is obtained; and can carry out the needle grinding to a plurality of deckle edge faces of product. Therefore, the problem that the magnesium dust floats in a large amount to possibly cause explosion due to common grinding is solved.
It should be noted that the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments by those skilled in the art based on the technical solution of the present invention fall within the protection scope of the present invention.
Claims (7)
1. A magnesium alloy lapping method for lapping and polishing a magnesium alloy in an aqueous solution, comprising:
(1) setting needle grinding parameters on a magnetic polishing machine, wherein the needle grinding parameters comprise needle grinding frequency, needle grinding time, translation frequency and exchange time;
(2) preparing grinding fluid and arranging steel needles with corresponding weight according to the one-time processing quantity of the magnesium alloy workpieces;
(3) putting the magnesium alloy workpiece into the grinding fluid;
(4) after the needle grinding time, taking out the magnesium alloy workpiece;
the magnesium alloy workpiece is contacted with the grinding liquid phase in a way that the side with more burrs faces downwards; and when the magnesium alloy workpiece has a plurality of rough edge surfaces to be processed, the rough edge surfaces are placed in the grinding fluid one by one downwards for processing.
2. The magnesium alloy lapping method of claim 1, wherein the lapping frequency is 15-60Hz, the lapping time is 3-10min, the translation frequency is 10-30Hz, and the exchange time is 0.5-1.5 min.
3. The magnesium alloy needle grinding method according to claim 1, wherein the magnesium alloy workpiece is formed by die casting, and the surface having more burrs is a male die surface; during needle grinding, the male die surface of the magnesium alloy workpiece faces downwards, and then the female die surface faces downwards for needle grinding.
4. The magnesium alloy needle grinding method according to claim 1, wherein the number of the magnesium alloy workpieces in the step (2) is 10, and the total weight of the steel needle is set to 5 kg.
5. The magnesium alloy needle grinding method according to claim 1, wherein the grinding liquid in the step (3) is stored in a plurality of tank bodies, and a plurality of magnesium alloy workpieces are respectively placed in the tank bodies for needle grinding.
6. The magnesium alloy lapping method according to claim 1, further comprising a step (5) after the step (4), wherein the magnesium alloy workpiece is washed with water and then placed on a hollow product rack until dried.
7. A magnesium alloy product, characterized in that it is a magnesium alloy product processed by the needle milling method for a magnesium alloy according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810931754.7A CN110834226A (en) | 2018-08-16 | 2018-08-16 | Magnesium alloy needle grinding method and product thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810931754.7A CN110834226A (en) | 2018-08-16 | 2018-08-16 | Magnesium alloy needle grinding method and product thereof |
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| CN110834226A true CN110834226A (en) | 2020-02-25 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20012685U1 (en) * | 2000-07-21 | 2000-09-21 | Liao Lu Jung | Grinding machine with magnetic drive |
| CN2770869Y (en) * | 2005-03-21 | 2006-04-12 | 豪昱电子有限公司 | Translational magnetic grinding apparatus |
| CN101244524A (en) * | 2007-02-14 | 2008-08-20 | 比亚迪股份有限公司 | Surface finish method for magnesium alloy parts |
| CN201227775Y (en) * | 2008-06-27 | 2009-04-29 | 豪昱电子有限公司 | Magnetic grinding machine without grinding dead angle |
| CN202137644U (en) * | 2011-05-04 | 2012-02-08 | 辽宁科技大学 | Precise polisher with alternating rotating magnetic field |
| CN204413768U (en) * | 2014-11-25 | 2015-06-24 | 肖运有 | Parallel-moving type multicomputer magnetic force polisher |
| CN205237794U (en) * | 2015-12-03 | 2016-05-18 | 上海胜僖汽车配件有限公司 | Automobile parts magnetic force grinding device |
| CN107671603A (en) * | 2017-10-13 | 2018-02-09 | 苏州睿鑫莱机电科技有限公司 | One kind translation magnetic force polisher |
| CN207495248U (en) * | 2017-09-21 | 2018-06-15 | 苏州卡利肯新光讯科技有限公司 | The magnetic grinding bucket and Magnetic Force Mill of die casting product |
-
2018
- 2018-08-16 CN CN201810931754.7A patent/CN110834226A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20012685U1 (en) * | 2000-07-21 | 2000-09-21 | Liao Lu Jung | Grinding machine with magnetic drive |
| CN2770869Y (en) * | 2005-03-21 | 2006-04-12 | 豪昱电子有限公司 | Translational magnetic grinding apparatus |
| CN101244524A (en) * | 2007-02-14 | 2008-08-20 | 比亚迪股份有限公司 | Surface finish method for magnesium alloy parts |
| CN201227775Y (en) * | 2008-06-27 | 2009-04-29 | 豪昱电子有限公司 | Magnetic grinding machine without grinding dead angle |
| CN202137644U (en) * | 2011-05-04 | 2012-02-08 | 辽宁科技大学 | Precise polisher with alternating rotating magnetic field |
| CN204413768U (en) * | 2014-11-25 | 2015-06-24 | 肖运有 | Parallel-moving type multicomputer magnetic force polisher |
| CN205237794U (en) * | 2015-12-03 | 2016-05-18 | 上海胜僖汽车配件有限公司 | Automobile parts magnetic force grinding device |
| CN207495248U (en) * | 2017-09-21 | 2018-06-15 | 苏州卡利肯新光讯科技有限公司 | The magnetic grinding bucket and Magnetic Force Mill of die casting product |
| CN107671603A (en) * | 2017-10-13 | 2018-02-09 | 苏州睿鑫莱机电科技有限公司 | One kind translation magnetic force polisher |
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Application publication date: 20200225 |