Ceramic chopper and surface treatment method thereof

Abstract

The invention discloses a ceramic chopper and a surface treatment method thereof. The method comprises the following steps: molding ceramic powder; sintering and curing; obtaining a prototype of the ceramic chopper; carrying out surface treatment processing; performing ultrasonic cleaning; performing spin-drying; drawing design is conducted, specifically, a drawing is guided into a laser machine, and technological parameters of the laser machine are set; the ceramic chopper is machined through a laser machine according to the drawing, and a desired shape is manufactured; performing ultrasonic cleaning; and performing heat treatment. According to the invention, the width of the protruding peak is increased by adjusting the distance between the drawings, and the strength and wear resistance of the peak are improved, so that the position can keep stable shape in the frequent transverse friction process of contact with a chip during application, the problems of breakage and the like are not easy to generate, and frequent failure of an application end is not caused; the ceramic chopper is additionally provided with countless protruding peaks and reinforcing ribs, the connectivity of all positions is enhanced, the ceramic chopper is slower in abrasion, less in breakage and higher in stability in the application process, and the service life can be prolonged by more than one time.

Description

Technical Field

[0001] The invention belongs to the technical field of ceramic splitting knives, and in particular relates to a ceramic splitting knives and a surface treatment method thereof. Background Art

[0002] Lasers are now widely used in various industries as a surface treatment method, including products that are difficult to machine, such as diamond, ceramics and other products with high hardness. The existing laser processing for ceramic splitters mainly has the following technical solutions: by drawing certain graphics and combining specific laser parameters, a certain surface morphology is finally presented to meet the client's usage and achieve a certain lifespan and mechanical properties. However, previous graphic designs are often relatively simple, and in actual use, problems such as low product life and rapid wear often occur, and they also do not meet the increasingly high demands of customers. Summary of the invention

[0003] In order to solve the technical problems existing in the prior art, the object of the present invention is to provide a ceramic splitting knife and a surface treatment method thereof.

[0004] In order to achieve the above purpose and the above technical effect, the technical solution adopted by the present invention is:

[0005] A surface treatment method for a ceramic splitting tool comprises the following steps:

[0006] Step 1: preparing ceramic powder;

[0007] Step 2: The ceramic powder prepared in step 1 is formed by a press to form a blank of a cylinder or other shape;

[0008] Step 3: Based on step 2, the pressed blank is sintered and solidified;

[0009] Step 4: Mechanically process the solidified blank to obtain a prototype of a ceramic splitter;

[0010] Step 5: Perform surface treatment on the product processed in step 4;

[0011] Step 6: Perform ultrasonic cleaning on the product after surface treatment in step 5 to clean the surface of the product;

[0012] Step 7: Dry the cleaned product;

[0013] Step 8: Place the product processed in step 7 on a special fixture to keep the product fixed and clamped;

[0014] Step 9: Place the fixture on the laser machine base;

[0015] Step 10: Use picosecond, nanosecond or femtosecond laser machine with a spot size of 2-10μm and design drawings using drawing software:

[0016] Step 11: Import the drawing into the laser machine and set the process parameters of the laser machine;

[0017] Step 12: The camera recognizes the product to confirm its position and height. The laser machine can move to the specified position according to the recognition results to process the ceramic splitter according to the drawing to produce the desired shape;

[0018] Step 13: Perform ultrasonic cleaning on the processed product;

[0019] Step 14: heat-treating the cleaned product;

[0020] Step 15: The finished product is packaged and then sold or otherwise tested.

[0021] Furthermore, in step 2, the pressing pressure is 0.1-0.6Mpa, and the holding time is 5-30s.

[0022] Furthermore, in step 3, the sintering temperature is 1000-1800° C., and the sintering time is 5-24 hours.

[0023] Furthermore, in step 6, the product after the surface treatment in step 5 is ultrasonically cleaned using hot water at 50-80°C.

[0024] Furthermore, in step 7, the drying frequency is 1000-10000 Hz, and the drying time is 1-5 min.

[0025] Furthermore, in step 10, the step of designing drawings using drawing software includes:

[0026] 101) Draw multiple concentric circles;

[0027] 102) dividing the circle in step 101) into a fixed number of parts;

[0028] 103) According to a certain angle, the circle is cut off by 2-10° every 10-60° to achieve the spacing;

[0029] 104) Based on the innermost circle, draw a complete pattern outwards at intervals of 1-10 μm. The number of circles to be drawn is determined based on the size of the conical part of the product.

[0030] Furthermore, in step 11, the process parameters of the laser machine are:

[0031] Laser frequency 500-2000Khz, power ratio 10-50%, scanning speed 100-2000bits / ms, jump speed 100-2000bits / ms, scanning delay 100-2000μs, jump delay 100-2000μs, light-on delay 100-2000μs, light-off delay 100-2000μs, processing times 1-10 times.

[0032] Furthermore, in step 14, the heat treatment temperature is 500-1800° C. and the heat treatment time is 1-48 hours to eliminate stress and change the microstructure of the ceramic.

[0033] The invention also discloses a ceramic splitting knife, which is prepared by adopting the surface treatment method of the ceramic splitting knife as mentioned above.

[0034] Furthermore, the ceramic splitting knife has a working surface, the working surface has a plurality of concentric circles, a plurality of reinforcing ribs are arranged between adjacent concentric circles, the width of the protruding peak on each concentric circle is 1-5 μm, and the roughness of the working surface is 0.2-1 μm.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] Compared with ordinary splitting knives, the ceramic splitting knives provided by the present invention have added numerous protruding peaks and reinforcing ribs, which strengthen the connectivity of various positions. During the application process, the ceramic splitting knives wear more slowly, break less frequently, have higher stability, and their service life can be more than doubled.

[0037] The present invention increases the width of the protruding peak by adjusting the spacing between the drawings, thereby increasing the strength and wear resistance of the peak. In this way, this position can maintain a stable shape during frequent lateral friction with the chip during application, is not prone to problems such as breakage, and will not cause frequent failures at the application end. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is an electron microscope image of the surface morphology of existing ceramic splitting knife products;

[0039] Figure 2 It is a structural schematic diagram of step 101) of the present invention;

[0040] Figure 3 It is a structural schematic diagram of step 103) of the present invention;

[0041] Figure 4 This is an electron microscope image of the surface morphology of the ceramic splitting knife product of the present invention;

[0042] Figure 5 It is a partial electron microscope magnified image of the ceramic splitting knife product of the present invention. DETAILED DESCRIPTION

[0043] The present invention is described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0044] A brief summary of one or more aspects is given below to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all conceived aspects, and is neither intended to identify the key or critical elements of all aspects nor to define the scope of any or all aspects. Its only purpose is to give some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that will be given later.

[0045] like Figure 2-5 As shown, the present invention discloses a surface treatment method for a ceramic splitting knife, comprising the following steps:

[0046] Step 1: Use alumina raw powder or add other functional substances to make the required powder;

[0047] Step 2: The powder prepared in step 1 is molded by a press machine with a pressing pressure of 0.1-0.6Mpa and a holding time of 5-30s to form a cylindrical or other shaped blank;

[0048] Step 3: Based on step 2, the pressed blank is sintered and solidified, the sintering temperature is 1000-1800°C, and the sintering time is 5-24h;

[0049] Step 4: The solidified blank is further processed by using a grinding wheel, sandpaper or other machining tools, such as processing the head of the cylinder into a cone, etc., to obtain the prototype of the ceramic splitter;

[0050] Step 5: The product processed in step 4 is subjected to surface treatment, including but not limited to polishing, acid corrosion and the like to change the roughness, the roughness of which is 0.01-1;

[0051] Step 6: Use 50-80℃ hot water to ultrasonically clean the surface of the surface treated product;

[0052] Step 7: Spin the cleaned product dry at a frequency of 1000-10000 Hz for 1-5 minutes;

[0053] Step 8: Place the product processed in step 7 on a special fixture to keep the product fixed and clamped;

[0054] Step 9: Place the fixture on the laser machine base;

[0055] Step 10: Use a picosecond, nanosecond or femtosecond laser machine with a spot size of 2-10μm, and use drawing software configured on the machine or computer, such as CAD or other 2D or 3D software, to design the drawing according to the following steps:

[0056] 101) Drawing Figure 2 The multiple concentric circles shown;

[0057] 102) Figure 2 The circle is divided into a fixed number of parts, such as 1° is divided into 360 parts, etc.

[0058] 103) According to a certain angle, the circle is cut off 2-10° every 10-60° to achieve the interval, such as Figure 3 As shown;

[0059] 104) Based on the innermost circle, draw a complete pattern outwards at intervals of 1-10 μm. The number of circles to be drawn is determined according to the size of the conical part of the product;

[0060] Step 11: Import the drawing into the laser machine and set the laser machine's process parameters:

[0061] Laser frequency 500-2000Khz, power ratio 10-50%, scanning speed 100-2000bits / ms, jump speed 100-2000bits / ms, scanning delay 100-2000μs, jump delay 100-2000μs, light-on delay 100-2000μs, light-off delay 100-2000μs, processing times 1-10 times;

[0062] Step 12: Processing by laser machine, using camera to identify the product to confirm the position and height to ensure the consistency and stability of the shape. The laser machine will move to the designated position to process the ceramic splitter according to the recognition result. Through the characteristics of the interaction between the laser beam and the material, the workpiece is irradiated with a high-power density laser beam, so that the ceramic material is rapidly heated in a very short time, and then physical or chemical changes such as melting and gasification occur, so as to achieve the purpose of processing and produce the desired shape;

[0063] Step 13: Perform ultrasonic cleaning on the processed product;

[0064] Step 14: Heat treat the cleaned product at a temperature of 500-1800℃ for 1-48h to eliminate stress and change the microstructure of the ceramic, such as grain growth and phase transformation. These changes help to enhance the strength and stability of the ceramic. The surface morphology of the ceramic splitting knife product obtained by electron microscopy is as follows: Figure 4-5 As shown;

[0065] Step 15: The finished product is packaged and then sold or otherwise tested.

[0066] The present invention also discloses a ceramic splitting knife made by the surface treatment method of the ceramic splitting knife as described above, wherein the ceramic splitting knife has a working surface, the working surface has a plurality of concentric circles, a plurality of reinforcing ribs are arranged between adjacent concentric circles, the width of the protruding peak on each concentric circle is 1-5 μm, and the roughness of the working surface is 0.2-1 μm.

[0067] The advantages of the present invention over conventional splitting knives include:

[0068] 1) The present invention increases the width of the protruding peak by adjusting the spacing of the drawing, thereby increasing the strength and wear resistance of the peak. In this way, this position can maintain a stable shape during the frequent lateral friction with the chip during application, and is not prone to breakage and other problems, which will not lead to frequent failures of the application end. The ceramic splitting knife wears slowly during application and breaks less;

[0069] 2) Compared with the ordinary form, the present invention adds countless reinforcing ribs through the intervals designed in the drawings, strengthens the connectivity of each position, makes it less likely to break, has higher stability, and more than doubles the lifespan.

[0070] Example 1

[0071] like Figure 2-5 As shown, a surface treatment method of a ceramic splitting tool comprises the following steps:

[0072] Step 1: Use alumina raw powder to make the required ceramic powder;

[0073] Step 2: The powder prepared in step 1 is formed by a press with a pressing pressure of 0.1 MPa and a holding time of 5 seconds to form a cylindrical blank;

[0074] Step 3: Based on step 2, the pressed blank is sintered and solidified, with a sintering temperature of 1800°C and a sintering time of 10 hours;

[0075] Step 4: The solidified blank is further processed by using a grinding wheel to process the cylindrical head into a cone shape to obtain the prototype of the ceramic splitting knife;

[0076] Step 5: Polish the product processed in step 4 to change the roughness, and the roughness is 1 μm;

[0077] Step 6: Use 50°C hot water to ultrasonically clean the surface of the surface treated product.

[0078] Step 7: Dry the cleaned product at a frequency of 1000 Hz for 2 minutes;

[0079] Step 8: Place the product processed in step 7 on a special fixture to keep the product fixed and clamped;

[0080] Step 9: Place the fixture on the laser machine base;

[0081] Step 10: Use a picosecond laser machine with a spot size of 2μm and the CAD drawing software configured on the machine to design the drawing according to the following steps:

[0082] 101) Drawing Figure 2 The multiple concentric circles shown;

[0083] 102) Figure 2 The circle is divided into 360 parts according to 1°;

[0084] 103) According to a certain angle, the circle is cut off 2° every 10° to achieve the interval, such as Figure 3 As shown;

[0085] 104) Based on the innermost circle, draw a complete pattern outwards at intervals of 5 μm. The number of circles to be drawn is determined according to the size of the conical part of the product;

[0086] Step 11: Import the drawing into the laser machine and set the laser machine's process parameters:

[0087] Laser frequency 500Khz, power ratio 10%, scanning speed 100bits / ms, jump speed 100bits / ms, scanning delay 100μs, jump delay 100μs, light-on delay 100μs, light-off delay 100μs, processing times 5 times;

[0088] Step 12: Processing by laser machine, using camera to identify the product to confirm the position and height to ensure the consistency and stability of the shape. The laser machine will move to the designated position to process the ceramic splitter according to the recognition result. Through the characteristics of the interaction between the laser beam and the material, the workpiece is irradiated with a high-power density laser beam, so that the ceramic material is rapidly heated in a very short time, and then physical or chemical changes such as melting and gasification occur, so as to achieve the purpose of processing and produce the desired shape;

[0089] Step 13: Perform ultrasonic cleaning on the processed product;

[0090] Step 14: Heat treat the cleaned product at 1200°C for 24 hours to eliminate stress and change the microstructure of the ceramic, such as grain growth and phase transformation. These changes help to enhance the strength and stability of the ceramic. The surface morphology of the ceramic splitter product obtained by electron microscopy is as follows: Figure 4-5 As shown;

[0091] Step 15: The finished product is packaged and then sold or otherwise tested.

[0092] A ceramic splitting knife has a working surface with a plurality of concentric circles. Five reinforcing ribs are arranged between adjacent concentric circles. The width of a protruding peak on each concentric circle is 2 μm. The roughness of the working surface is 0.2 μm.

[0093] Example 2

[0094] The difference between this embodiment and the first embodiment is that 10 reinforcing ribs are arranged between adjacent concentric circles of the ceramic splitting knife of this embodiment.

[0095] The rest is the same as in Example 1.

[0096] Example 3

[0097] The difference between this embodiment and the first embodiment is that 30 reinforcing ribs are arranged between adjacent concentric circles of the ceramic splitting knife of this embodiment.

[0098] The rest is the same as in Example 1.

[0099] Comparative Example 1

[0100] The surface morphology of the product is shown in the electron microscope. Figure 1 shown.

[0101] The performance test results of Examples 1-3 and Comparative Example 1 are shown in Table 1.

[0102] Table 1

[0103] Mechanics (gf) life Example 1 32 1300K Example 2 38 2200K Example 3 26 1000K Comparative Example 1 22 600K

[0104] As can be seen from Table 1, compared with ordinary ceramic splitters, the ceramic splitter of the present invention has numerous protruding peaks and reinforcing ribs, which strengthen the connectivity of each position, improve the mechanical properties, is not easy to break, has higher stability, and can more than double the lifespan.

[0105] Parts or structures not specifically described in the present invention may adopt existing technologies or existing products and will not be described in detail here.

[0106] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A surface treatment method for a ceramic splitting knife, characterized in that: The following steps are involved: Step 1: preparing ceramic powder; Step 2: The ceramic powder prepared in step 1 is formed by a press to form a blank of a cylinder or other shape; Step 3: Based on step 2, the pressed blank is sintered and solidified; Step 4: Mechanically process the solidified blank to obtain a prototype of a ceramic splitter; Step 5: Perform surface treatment on the product processed in step 4; Step 6: Perform ultrasonic cleaning on the product after surface treatment in step 5 to clean the surface of the product; Step 7: Dry the cleaned product; Step 8: Place the product processed in step 7 on a special fixture to keep the product fixed and clamped; Step 9: Place the fixture on the laser machine base; Step 10: Use picosecond, nanosecond or femtosecond laser machine with a spot size of 2-10μm and design drawings using drawing software: Step 11: Import the drawing into the laser machine and set the process parameters of the laser machine; Step 12: The camera recognizes the product to confirm its position and height. The laser machine can move to the specified position according to the recognition results to process the ceramic splitter according to the drawing to produce the desired shape; Step 13: Perform ultrasonic cleaning on the processed product; Step 14: heat-treating the cleaned product; Step 15: The finished product is packaged and then sold or otherwise tested.

2. The surface treatment method of a ceramic splitting knife according to claim 1, characterized in that: In step 2, the pressing pressure is 0.1-0.6Mpa, and the holding time is 5-30s.

3. The surface treatment method of a ceramic splitting knife according to claim 1, characterized in that: In step 3, the sintering temperature is 1000-1800° C., and the sintering time is 5-24 hours.

4. The surface treatment method of a ceramic splitting knife according to claim 1, characterized in that: In step 6, the product after the surface treatment in step 5 is ultrasonically cleaned using hot water at 50-80°C.

5. The surface treatment method of a ceramic splitting knife according to claim 1, characterized in that: In step 7, the drying frequency is 1000-10000 Hz, and the drying time is 1-5 minutes.

6. The surface treatment method of a ceramic splitting knife according to claim 1, characterized in that: In step 10, the steps of designing drawings using drawing software include: 101) Draw multiple concentric circles; 102) dividing the circle in step 101) into a fixed number of parts; 103) According to a certain angle, the circle is cut off by 2-10° every 10-60° to achieve the spacing; 104) Based on the innermost circle, draw a complete pattern outwards at intervals of 1-10 μm. The number of circles to be drawn is determined based on the size of the conical part of the product.

7. The surface treatment method of a ceramic splitting knife according to claim 1, characterized in that: In step 11, the process parameters of the laser machine are: Laser frequency 500-2000Khz, power ratio 10-50%, scanning speed 100-2000bits / ms, jump speed 100-2000bits / ms, scanning delay 100-2000μs, jump delay 100-2000μs, light-on delay 100-2000μs, light-off delay 100-2000μs, processing times 1-10 times.

8. The surface treatment method of a ceramic splitting knife according to claim 1, characterized in that: In step 14, the heat treatment temperature is 500-1800° C. and the heat treatment time is 1-48 hours to eliminate stress and change the microstructure of the ceramic.

9. A ceramic splitting knife, characterized in that: The ceramic splitting knife is prepared by the surface treatment method of any one of claims 1 to 8.

10. A ceramic splitting knife according to claim 9, characterized in that: The ceramic splitting knife has a working surface, the working surface has a plurality of concentric circles, a plurality of reinforcing ribs are arranged between adjacent concentric circles, the width of the protruding peak on each concentric circle is 1-5 μm, and the roughness of the working surface is 0.2-1 μm.

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