Process for removing burrs from the surface of a steel workpiece

Abstract

The application relates to the technical field of surface treatment, in particular to a process for removing burrs on the surface of a steel workpiece, which comprises the following steps: providing a water jet spraying device comprising a spray gun; fixing a workpiece to be processed made of steel in a jig of the water jet spraying device; and spraying a mixed solution from the spray gun at a preset flow rate, a preset pressure and a preset spraying distance to process the surface of the workpiece to be processed; wherein, according to mass percentage, the mixed solution comprises 10-15% glass sand, 5-12% talcum powder, 10-15% white corundum and the balance water; the average particle size of the glass sand is 80-120 mesh, the bulk density of the glass sand is 1-3 g / cm 3 ~3g / cm 3 , the sphericity of the glass sand is greater than or equal to 92%, and the average sphericity of the glass sand is greater than or equal to 87%. The process for removing burrs on the surface of a steel workpiece can not only remove the burrs on the surface of the steel workpiece, but also polish the steel workpiece, so that the surface roughness of the steel workpiece is reduced.

Description

Technical Field

[0001] This application relates to the field of surface treatment technology, and in particular to a process for removing burrs from the surface of steel workpieces. Background Technology

[0002] In modern industrial production, steel workpieces often develop burrs, tool marks, and flash on their surfaces due to cutting or molding processes. These defects not only affect their appearance but also their performance. Therefore, surface deburring processes are commonly used to remove these burrs. Currently, processes such as belt polishing, ultrasonic cleaning, or cryogenic cleaning are commonly used to remove burrs from steel workpieces. However, these processes often have limitations. For example, belt polishing is difficult to remove burrs from the inner surfaces or corners of steel workpieces; ultrasonic cleaning, due to its high-frequency vibrations, is not effective at removing deep or hard burrs; and cryogenic cleaning is generally suitable for needle-like burrs but is ineffective at removing larger burrs. Summary of the Invention

[0003] Based on the shortcomings of existing technologies, this application provides a process for removing burrs from the surface of steel workpieces, aiming to solve the problem of rough surface of steel workpieces caused by incomplete burr removal in surface deburring processes.

[0004] To achieve the above objectives, this application provides the following technical solution: A process for removing burrs from the surface of a steel workpiece includes the following steps: Provide water jet spraying equipment including spray guns; The workpiece to be processed, which is made of steel, is fixed in the fixture of the water jet spraying equipment. The spray gun is controlled to spray a mixture to treat the surface of the workpiece according to the preset flow rate, preset pressure and preset spray distance. The mixture comprises, by mass percentage: 10%~15% glass sand, 5%~12% talc, 10%~15% white corundum, and the balance being water; The glass sand has an average particle size of 80 mesh to 120 mesh and a bulk density of 1 g / cm³. 3 ~3g / cm 3 The glass sand has a sphericity greater than or equal to 92% and an average sphericity greater than or equal to 87%.

[0005] In some embodiments, the mixture comprises, by mass percentage: 11.5%~13.5% glass sand, 7%~10% talc, 12%~14% white corundum, and the balance being water.

[0006] In some embodiments, the average particle size of the talc powder is 200 mesh to 2000 mesh.

[0007] In some embodiments, the average particle size of the white fused alumina is F80 mesh to F120 mesh.

[0008] In some embodiments, the preset pressure is 2MPa to 30MPa.

[0009] In some embodiments, the preset spray distance is 5mm to 30mm.

[0010] In some embodiments, before performing the step of spraying the mixture to treat the surface of the workpiece, the method includes: delivering abrasive and water to the mixing chamber of the water jet spraying device at the preset flow rate and mixing them to obtain the mixture.

[0011] In some embodiments, the preset flow rate includes a water flow rate of 0.2 L / min to 5 L / min.

[0012] In some embodiments, the preset flow rate includes the abrasive flow rate, which is 0.1 kg / min to 1 kg / min.

[0013] In some embodiments, the workpiece to be processed is a cylinder, and the step of spraying the mixture to treat the surface of the workpiece to be processed further includes: The fixture is controlled to rotate so that the workpiece to be processed rotates around its own central axis at a rotation speed of 0.2 r / min to 2 r / min.

[0014] The beneficial effects of this application are as follows: This application utilizes a reasonable combination of white fused alumina, glass sand, talc powder, and water. Under preset flow rate, pressure, and spray distance conditions, a high-speed spray mixture is formed through a spray gun, which can efficiently remove burrs from the surface of steel workpieces. By adjusting parameters such as the density of the glass sand and the impact toughness of the steel workpiece, the talc powder not only buffers the impact force on the steel workpiece, preventing cracks caused by excessive impact, but also lubricates and polishes the surface of the steel workpiece. At the same time, the talc powder and white fused alumina can absorb and remove impurities generated during the process, preventing new scratches on the steel workpiece caused by impurities, thereby achieving polishing of the steel workpiece surface and effectively reducing the surface roughness of the steel workpiece. Attached Figure Description

[0015] Figure 1 This is a rendering of the steel workpiece before deburring in Embodiment 1 of this application; Figure 2 This is a diagram showing the effect of deburring the steel workpiece in Embodiment 1 of this application. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below. It should be understood that the following embodiments are merely used to explain this application and are not intended to limit this application. Unless otherwise specified, all technical and scientific terms used herein have their ordinary meaning in the field to which the claimed subject matter belongs.

[0017] In modern industrial production, steel workpieces often develop burrs, tool marks, and flash on their surfaces due to cutting or molding processes. These defects not only affect their appearance but also their performance. Therefore, surface deburring processes are commonly used to remove these burrs. Currently, methods such as belt polishing, ultrasonic cleaning, or cryogenic cleaning are commonly used to remove burrs from the workpiece surface. However, these processes often have limitations. For example, belt polishing is difficult to remove burrs from the inner surface or corners of steel workpieces. Ultrasonic cleaning, due to its high-frequency vibrations, is not effective at removing burrs from the surface of steel workpieces, making it difficult to remove some deep or hard burrs. Cryogenic cleaning is generally suitable for needle-like burrs but is ineffective at removing larger burrs.

[0018] Based on the shortcomings of existing technologies, this application provides a process for removing burrs from the surface of steel workpieces, aiming to solve the problem of rough surface of steel workpieces caused by incomplete burr removal in surface deburring processes.

[0019] To achieve the above objectives, this application provides the following technical solution: A process for removing burrs from the surface of a steel workpiece includes the following steps: Provide water jet spraying equipment including spray guns; The workpiece to be processed, which is made of steel, is fixed in the fixture of the water jet spraying equipment. The spray gun is controlled to spray the mixed liquid at the preset flow rate, preset pressure and preset spray distance to treat the surface of the workpiece. The mixture, by mass percentage, comprises: 10%~15% glass sand, 5%~12% talc, 10%~15% white corundum, and the balance being water; The average particle size of the glass sand is 80 mesh to 120 mesh, and the bulk density of the glass sand is 1 g / cm³. 3 ~3g / cm 3 The sphericity of the glass sand is greater than or equal to 92%, and the average sphericity of the glass sand is greater than or equal to 87%.

[0020] In this embodiment, water jet surface treatment is used to process the surface of steel workpieces to remove surface defects such as burrs and flash, thereby reducing surface roughness. In some embodiments, this solution provides a water jet spraying device with multiple stations, each equipped with a fixture for mounting the workpiece to be processed. The device also includes a spray gun and a mixing chamber, with the spray gun's inlet connected to the mixing chamber. After the mixture is prepared, it enters the spray gun through the inlet and is then sprayed out from the nozzle to treat the surface of the workpiece for subtractive processing. Once the workpiece is fixed to the fixture, the spray gun can be controlled to spray the mixture to treat the workpiece's surface by selecting parameters such as the mixture, preset flow rate, preset pressure, and preset spray distance. The spray gun has high flexibility, allowing it to treat hidden burrs on the inner surface or corners of the steel workpiece in conjunction with the mixture.

[0021] Glass grit has a moderate hardness, with a Rockwell hardness of 46~53 HRC. When treating the surface of steel workpieces, the spherical shape of glass grit allows it to grind the edges of burrs, promoting the formation of smooth chamfers, reducing stress concentration, and helping to remove thin-walled burrs. At the same time, it can buffer the impact force on the steel workpiece, avoiding damage to the steel workpiece, thus helping to polish the steel workpiece.

[0022] White fused alumina has extremely high hardness, with a Rockwell hardness of 75~76 HRC. Its angular structure can concentrate stress at the root of the burr. Driven by the high-speed jet of the mixed liquid, it not only achieves the cutting of larger and thicker burrs, improving deburring efficiency, but also removes oxide scale, residual liquid and micro-chips from the surface of steel workpieces, achieving a cleaning effect, improving the cleanliness of the process, and preventing new cracks in steel workpieces caused by impurities, thus helping to reduce the surface roughness of steel workpieces.

[0023] Talc powder has fine particles and a large specific surface area, giving it excellent physical adsorption capacity. When removing burrs from the surface of steel workpieces using a mixture, it can efficiently adsorb residual metal shavings and dust, preventing impurities from scratching the surface and causing new scratches and microburrs. Furthermore, the layered crystalline structure of talc powder gives it excellent lubricity, allowing it to coat the surface of the steel workpiece and reduce direct friction between the mixture and the workpiece, thus minimizing the risk of scratching the surface. Talc powder also polishes the surface of the steel workpiece, helping to reduce its surface roughness.

[0024] This embodiment of the solution, by reasonably adjusting the composition of the mixture within the above range, and coordinating the process and its parameters, can remove burrs from steel workpieces while buffering the impact force on the steel workpieces, and can remove impurities generated during the process, avoiding new scratches and cracks on the steel workpieces caused by excessive impact and impurities. It can also lubricate and polish the surface of the steel workpieces, remove the roots of residual burrs, thereby achieving polishing of the surface of the steel workpieces and reducing their surface roughness.

[0025] In some embodiments, the mixture comprises: 15% glass sand, 12% talc, 10% white fused alumina, and the balance being water. When applied to steel workpieces such as low-carbon steel and stainless steel, the steel workpieces are relatively soft and have low hardness, for example, a Rockwell hardness of 30~45 HRC. During deburring, they are easily scratched by falling burrs and other impurities, resulting in scratches and microburrs. They are also prone to surface defects such as cracks and pits due to excessive impact. When removing burrs, appropriately increasing the amount of glass sand and talc in the mixture and reducing the content of white fused alumina, although weakening the impact force on the steel workpiece and reducing the deburring efficiency, helps to buffer the impact force of the mixture and remove impurities generated during the process, avoiding surface defects caused by excessive impact and impurities. At the same time, it can improve the polishing effect of the mixture on the steel workpiece, helping to uniformly reduce its surface roughness.

[0026] In some embodiments, the mixture comprises: 10% glass sand, 5% talc, 15% white fused alumina, and the balance being water. When this embodiment is applied to high-hardness steel workpieces, such as high-carbon steel with a Rockwell hardness of 50-62 HRC, the burrs have a strong bond with the steel workpiece matrix, making them difficult to remove. Appropriately increasing the white fused alumina content in the mixture and decreasing the glass sand and talc content increases the impact force on the steel workpiece surface, which not only helps remove burrs with strong bonding but also improves deburring efficiency.

[0027] In this embodiment, the average particle size and bulk density of the glass sand can be adjusted according to the hardness, toughness, and other properties of the steel, in conjunction with the components of the mixture such as white corundum and talc, to achieve a better burr removal effect. Based on the mixture, the average particle size or bulk density of the glass sand can be increased within the aforementioned range, for example, to 80 mesh and 3 g / cm³, respectively. 3 At this time, it can enhance the grinding effect on the surface of steel workpieces, helping to remove burrs and polish the steel workpieces, and reducing the surface roughness of the steel workpieces. However, when reducing the average particle size or bulk density of the glass frit, for example, by setting values ​​of 120 mesh and 1 g / cm³, respectively... 3 Although its kinetic energy is low and its impact force is weak, with the cooperation of the other components of the mixture, it can improve the fineness of the surface treatment of steel workpieces, help polish steel workpieces, and make them form a more uniform and delicate surface.

[0028] In this embodiment, the content of irregular particles in the glass sand can be controlled by adjusting the sphericity and average sphericity of the glass sand within the above range, thereby increasing the content of spherical glass sand in the mixture. This allows for micron-level grinding of the burr edges on the steel workpiece during deburring, improves the uniformity of the polished steel workpiece surface, and enhances the buffering effect against impact forces, thus facilitating a uniform reduction in the surface roughness of the steel workpiece. When the sphericity of the glass sand is 92% and the average sphericity is 87%, it contains trace amounts of irregular particles, which, in conjunction with the mixture, enhance the cutting force on the steel workpiece, facilitating burr removal and improving processing efficiency.

[0029] Based on the process requirements, the average particle size and other parameters of the glass sand are comprehensively adjusted within the above range, and the mixture and process are coordinated to remove burrs and polish the steel workpiece to achieve the required surface roughness.

[0030] In some embodiments, the mixture comprises, by mass percentage: 11.5%–13.5% glass sand, 7%–10% talc, 12%–14% white corundum, and the balance being water. Adjusting the composition of the mixture within this range can enhance the synergistic effect between its components, uniformly polishing the surface of the steel workpiece while removing burrs, thus contributing to a uniform reduction in surface roughness.

[0031] In some embodiments, the average particle size of talc is 200 mesh to 2000 mesh.

[0032] Talc powder within the above average particle size range has excellent physical adsorption capacity, which helps to adsorb newly formed impurities during the deburring process and prevents impurities from scratching steel workpieces, causing new scratches and microburrs.

[0033] In some embodiments, the average particle size of white fused alumina is F80 mesh to F120 mesh.

[0034] Using this range of average particle size for white fused alumina maintains its burr-cutting effect while, in conjunction with the mixture and process parameters, controls the impact force on the steel workpiece surface, reducing the risk of new cracks. Furthermore, the fine white fused alumina particles within this range have a certain polishing effect on the steel workpiece. Together with the other components of the mixture, they help reduce the surface roughness of the steel workpiece. At the same time, increasing the average particle size of white fused alumina within this range can improve the impact force on burrs, thus helping to improve deburring efficiency.

[0035] In some embodiments, the average particle size of the glass abrasive is 120 mesh, the average particle size of the talc is 2000 mesh, and the average particle size of the white corundum is F120 mesh. When the workpiece to be processed is a low-hardness steel such as low-carbon steel or stainless steel, for example, with a Rockwell hardness of 30~45HRC, appropriately increasing the particle size of the abrasive based on the mixture composition can reduce the kinetic energy of the mixture. This not only helps to reduce the impact force on the steel workpiece, but also increases the adsorption and removal effect of impurities, avoiding surface defects such as cracks and scratches on the steel workpiece caused by impact force and impurities. It can also improve the grinding effect on the surface of the steel workpiece, helping to polish its surface and promoting a lower surface roughness.

[0036] In some embodiments, the average particle size of the glass abrasive is 80 mesh, the average particle size of the talc is 200 mesh, and the average particle size of the corundum is F80 mesh. When the workpiece to be processed is a high-hardness steel workpiece, such as high-carbon steel with a Rockwell hardness of 50-62 HRC, its burrs are relatively tough and difficult to remove. Based on the formulation of the mixture, reducing the particle size of the abrasive can increase the impact force of the mixture on the steel workpiece, which helps to remove the tougher burrs, thereby improving the deburring efficiency.

[0037] In some embodiments, the preset pressure is 2MPa~30MPa.

[0038] In some embodiments, the preset spray distance is 5mm to 30mm.

[0039] In some embodiments, before performing the step of spraying the mixture to treat the surface of the workpiece, the method includes: delivering abrasive and water to the mixing chamber of a water jet spraying device at a preset flow rate to mix them and obtain a mixture.

[0040] In some embodiments, the preset flow rate includes a water flow rate of 0.2 L / min to 5 L / min.

[0041] In some embodiments, the preset flow rate includes the abrasive flow rate, which is 0.1 kg / min to 1 kg / min.

[0042] Adjusting the preset pressure, preset flow rate, and preset spray distance to the above range, along with the components of the mixture, can regulate the impact force on the steel surface. This satisfies the requirements for burr removal while avoiding new scratches and cracks on the steel workpiece surface caused by excessive impact force. Furthermore, increasing the preset flow rate and preset pressure, or decreasing the preset spray distance within the range, will increase the impact force of the mixture on the steel workpiece, which is beneficial for burr removal.

[0043] In some embodiments, the preset pressure is 2 MPa, the preset spray distance is 30 mm, the water flow rate is 0.2 L / min, and the abrasive flow rate is 0.1 kg / min. When applied to steel workpieces with low hardness, such as low carbon steel and stainless steel, for example, when the Rockwell hardness is 30~45 HRC, the burrs are relatively easy to remove. Based on the mixture, by comprehensively adjusting the process parameters, while meeting the requirements for burr removal, reducing the preset pressure and preset flow rate, and increasing the preset spray distance, the impact force of the mixture on the surface of the steel workpiece can be reduced. This not only avoids the formation of new scratches and cracks on the surface of the steel workpiece due to impact, but also reduces the wear and tear on the steel workpiece, helping to reduce the generation of scrap. It also facilitates polishing the surface of the steel workpiece and reduces its surface roughness.

[0044] In some embodiments, the preset pressure is 30 MPa, the preset spray distance is 5 mm, the water flow rate is 5 L / min, and the abrasive flow rate is 1 kg / min. When applied to high-hardness steel workpieces such as high-carbon steel, for example, those with a Rockwell hardness of 50~62 HRC, where the burrs are quite tough, by comprehensively adjusting the process parameters based on the mixture, while avoiding excessive impact on the surface of the steel workpiece, increasing the preset pressure and preset flow rate, and reducing the preset spray distance, the impact force of the mixture on the surface of the steel workpiece can be increased, which helps to remove burrs and improves processing efficiency.

[0045] In some embodiments, the workpiece to be processed is a cylinder, and the step of spraying the mixture to treat the surface of the workpiece further includes: The fixture is rotated so that the workpiece to be processed rotates around its own central axis at a speed of 0.2 r / min to 2 r / min.

[0046] When removing burrs from steel workpieces, fixing the workpiece on a fixture and rotating it at the aforementioned speed not only helps to process the workpiece evenly, but also avoids deformation caused by frictional heat due to prolonged impact on the workpiece. At the same time, it reduces the need for manual adjustment of the spray gun direction and the position of the workpiece, effectively improving processing efficiency.

[0047] In some embodiments, the rotation speed is 0.2 r / min to 0.4 r / min. When the steel is a relatively thick cylinder, for example, with a diameter of 20 to 25 cm, reducing the rotation speed can avoid incomplete removal of burrs due to excessively high speed, which would require multiple processing steps and extend the processing time.

[0048] In some embodiments, the rotational speed is 1.8 r / min to 2 r / min. When the steel is a thin cylinder, for example, with a diameter of 2 to 5 cm, increasing the rotational speed not only helps to improve deburring efficiency and reduce process time while maintaining the deburring effect, but also avoids micro-deformation of the steel workpiece caused by prolonged impact, which would affect its assembly accuracy and other performance characteristics.

[0049] In some embodiments, the process further includes repeatedly performing the step of "spraying the mixture to treat the surface of the workpiece". When applied to steel workpieces with high hardness, such as high carbon steel with a Rockwell hardness of 58-62 HRC, and where some burrs are large and thick, making them difficult to remove, repeated treatment of the steel workpiece surface can improve the burr removal rate and reduce burr residue.

[0050] Example 1 The mixture comprises, by mass percentage: 12.5% ​​glass sand, 9.5% talc, 13% white corundum, and the balance being water; Among them, the average particle size of white fused alumina is F100 mesh, the average particle size of talc is 1000 mesh, the average particle size of glass sand is 120 mesh, the average sphericity is 95%, the roundness is 95%, and the bulk density is 2.5 g / cm³. 3 .

[0051] Provide water jet spraying equipment including spray guns; Prepare SJU2 material workpieces as steel workpieces to be processed; Glass sand, talc powder, white corundum, and water are fed into the mixing chamber of a water jet equipment at a water flow rate of 0.2~5L / min and an abrasive flow rate of 0.1~1kg / min to obtain a mixture. The workpiece to be processed is fixed in one of the fixtures of the water jet spraying equipment. Under the conditions of pressure of 2~30MPa and spraying distance of 5~30mm, the spray gun is controlled to spray out the mixed liquid to treat the surface of the workpiece to be processed, so as to obtain a steel workpiece with deburred steel.

[0052] Example 2 The difference between Example 2 and Example 1 is: The mixture comprises, by mass percentage: 10% glass sand, 12% talc, 10% white corundum, and the balance being water; The average particle size of white fused alumina is 80 mesh, the average particle size of talc is 200 mesh, the average particle size of glass sand is 80 mesh, and the bulk density of glass sand is 3 g / cm³. 3 ; The rest are as described in Example 1.

[0053] Example 3 The difference between Example 3 and Example 1 is: The mixture comprises, by mass percentage: 15% glass sand, 5% talc, 15% white corundum, and the balance being water; The average particle size of white fused alumina is F120 mesh, the average particle size of talc is 2000 mesh, and the bulk density of glass sand is 1 g / cm³. 3 ; The rest are as described in Example 1.

[0054] Example 4 The difference between Example 4 and Example 1 is: The average particle size of talc is 1500 mesh, and the average sphericity of glass sand is 87%. The rest are as described in Example 1.

[0055] Example 5 The difference between Example 5 and Example 1 is: The average particle size of the talc powder is 800 mesh, and the sphericity of the glass sand is 92%. The rest are as described in Example 1.

[0056] Example 6 The difference between Example 6 and Example 1 is: The workpiece to be processed is a cylinder with a diameter of 10cm. The step of spraying the mixture to treat the surface of the workpiece to be processed also includes: controlling the rotation of the fixture so that the workpiece to be processed rotates around its own central axis at a speed of 1r / min. The rest are as described in Example 1.

[0057] Comparative Example 1 The difference between Comparative Example 1 and Example 1 is as follows: The mixture in Comparative Example 1 does not contain talc; The rest are as described in Example 1.

[0058] Performance tests of examples and comparative examples: 1. Residual burr length: The steel workpiece with burrs removed is used as the test sample. Using an S-4800 scanning electron microscope, the burr length on the surface of the test sample is detected at magnification of 1000~10000. The average value is taken as the residual burr length.

[0059] 2. Metal shavings residue rate: The steel workpiece after deburring is used as the test sample. Using an S-4800 scanning electron microscope at magnification of 1000~10000, the area of ​​residual metal shavings on the surface of the test sample is detected and counted. The proportion of the area of ​​residual metal shavings to the area of ​​deburring is calculated as the metal shavings residue rate.

[0060] 3. Surface roughness: The surface roughness is measured at 10 different locations on the surface of the steel workpiece after burrs have been removed using a surface roughness tester, and the average value is taken as the surface roughness.

[0061] 4. Gloss: A gloss meter is used to test 10 different locations on the surface of the deburred steel workpiece at a measurement angle of 60°, and the average value is taken as the gloss.

[0062] The steel workpieces with deburred parts in Examples 1-6 and Comparative Example 1 were tested using the above test methods; some process parameters and performance test results of Examples 1-6 and Comparative Example 1 are shown in Table 1.

[0063] Table 1. Some process parameters and performance test results of Examples 1-6 and Comparative Example 1 Through Table 1, Figure 1 and Figure 2 Referring to Comparative Example 1, it can be seen that the deburred steel workpiece prepared in Comparative Example 1 still has micro-scratches remaining on its surface; while the metal debris residue rate in Example 1 decreased from 15.3% to 4.8%, indicating that the mixture prepared in this application can not only remove burrs but also adsorb impurities such as debris generated during burr removal. At the same time, the residual burr length decreased from 0.05mm to 0.02mm, the surface roughness decreased from 5.4μm to 1.6μm, and the gloss decreased from 27GU to 9.8GU. This further verifies that the process for removing burrs from the surface of steel workpieces provided in this application can effectively remove burrs from the surface of steel workpieces and has a polishing effect, resulting in a smooth frosted surface on the steel workpiece after burr removal.

[0064] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A process for removing burrs from the surface of steel workpieces, characterized in that, Includes the following steps: Provide water jet spraying equipment including spray guns; The workpiece to be processed, which is made of steel, is fixed in the fixture of the water jet spraying equipment. The spray gun is controlled to spray a mixture to treat the surface of the workpiece according to the preset flow rate, preset pressure and preset spray distance. The mixture comprises, by mass percentage: 10%~15% glass sand, 5%~12% talc, 10%~15% white corundum, and the balance being water; The glass sand has an average particle size of 80 mesh to 120 mesh and a bulk density of 1 g / cm³. 3 ~3g / cm 3 The glass sand has a sphericity greater than or equal to 92% and an average sphericity greater than or equal to 87%. The average particle size of the talc powder is 200 mesh to 2000 mesh; The workpiece to be processed is a cylinder, and the step of spraying the mixed liquid to treat the surface of the workpiece to be processed further includes: The fixture is controlled to rotate so that the workpiece to be processed rotates around its own central axis at a rotation speed of 0.2 r / min to 2 r / min.

2. The process for removing burrs from the surface of steel workpieces according to claim 1, characterized in that, The mixture comprises, by mass percentage: 11.5%~13.5% glass sand, 7%~10% talc, 12%~14% white corundum, and the balance being water.

3. The process for removing burrs from the surface of steel workpieces according to claim 1, characterized in that, The preset pressure is 2MPa~30MPa.

4. The process for removing burrs from the surface of steel workpieces according to claim 3, characterized in that, The preset spray distance is 5mm~30mm.

5. The process for removing burrs from the surface of steel workpieces according to claim 1, characterized in that, Before performing the step of spraying the mixture to treat the surface of the workpiece, the process includes: delivering abrasive and water to the mixing chamber of the water jet spraying device at the preset flow rate to mix them and obtain the mixture.

6. The process for removing burrs from the surface of steel workpieces according to claim 5, characterized in that, The preset flow rate includes water flow rate, which is 0.2L / min to 5L / min.

7. The process for removing burrs from the surface of steel workpieces according to claim 6, characterized in that, The preset flow rate includes the abrasive flow rate, which is 0.1 kg / min to 1 kg / min.

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