Production process of stacked abrasive material and grinding wheel applying stacked abrasive material

Abstract

The production process comprises the steps that a plurality of abrasive particles are poured into a mold according to a specific particle size range, the abrasive particles are pressed to be tightly stacked in the mold and form a preset shape, an adhesive is applied to the pressed abrasive particles, and the stacked abrasive particles are formed. The invention relates to the technical field of stacked abrasive material production, in particular to a stacked abrasive material production method which comprises the following steps: preparing particles, ensuring firm bonding among the particles, fixing the particles together to form stacked particles, carrying out curing treatment on the stacked particles, and carrying out form adjustment on the obtained stacked particles after curing treatment to obtain a stacked abrasive material with a specific form. The abrasive particles formed through the stacking process can keep good self-sharpening performance, particle blockage is avoided, the grinding efficiency is improved, the grinding wheel has better stability and longer service life, and excessive concentration of heat in the grinding process is avoided by improving the structural design of the particles.

Description

Technical Field

[0001] The invention relates to the technical field of stacked abrasive production, in particular to a production process of stacked abrasive and a grinding wheel using the stacked abrasive. Background Art

[0002] Grinding wheels are widely used in metal processing, mechanical processing, grinding and other fields, especially in high-precision processing, where high grinding efficiency and workpiece surface quality are required. Traditional grinding wheels usually use a single glue to fix abrasive particles on the substrate, but this method has many disadvantages, especially when using fine-grained abrasives, the following problems often occur:

[0003] Low grinding efficiency: Due to the large friction between fine-grained abrasive particles, clogging is easy to occur, resulting in insufficient self-sharpening of the abrasive and inability to maintain continuous grinding effect. Grinding wheel clogging: Fine-grained abrasive particles tend to gather on the surface of the grinding wheel, resulting in clogging of the grinding wheel pores, which seriously affects the heat dissipation and grinding performance of the grinding wheel. Heat concentration: Fine-grained abrasives cannot effectively conduct heat, resulting in excessive heat concentration, which may damage the surface characteristics of the workpiece and cause thermal deformation or damage.

[0004] To this end, the present invention provides a production process of a stacked abrasive and a grinding wheel using the stacked abrasive to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a production process of a stacked abrasive and a grinding wheel using the stacked abrasive, which solve the above problems.

[0006] To achieve the above object, the present invention is implemented by the following technical scheme: a production process of stacked abrasive, characterized in that the production process comprises the following steps:

[0007] Step 1: Pour a plurality of abrasive particles into a mold according to a specific particle size range;

[0008] Step 2: Pressing the abrasive particles so that they are densely packed in the mold and formed into a predetermined shape;

[0009] Step 3: applying adhesive to the pressed abrasive particles to ensure a firm bond between the particles, fix the particles together and form stacked particles;

[0010] Step 4: solidifying the stacked particles, and adjusting the shape of the obtained stacked particles after the solidification to obtain a stacked abrasive with a specific shape.

[0011] Preferably, the shape of the deposited abrasive in step 4 is a pyramid, a prism or other specific shapes.

[0012] Preferably, the particle size of the abrasive particles ranges from 20 mesh to 3000 mesh.

[0013] Preferably, the adhesive in step 3 can be epoxy resin, rubber, polyurethane or a mixture thereof.

[0014] Preferably, the pressure of the pressing process in step 2 is 1000N, and the pressing time is 5 minutes.

[0015] Preferably, the curing temperature in step 4 is 80° C. and the curing time is 2 hours.

[0016] A grinding wheel using the above-mentioned stacked abrasive, the grinding wheel comprising:

[0017] A substrate, the surface of which is treated to enhance adhesion to abrasive particles;

[0018] The stacked abrasive is uniformly or irregularly bonded to the grinding wheel substrate.

[0019] Preferably, the substrate is any one of a foam wheel, a metal substrate, a ceramic substrate, and a resin substrate.

[0020] Beneficial Effects

[0021] The present invention provides a production process of a stacked abrasive and a grinding wheel using the stacked abrasive. Compared with the prior art, the present invention has the following beneficial effects:

[0022] The abrasive particles formed by the stacking process of the present invention can maintain good self-sharpening properties, avoid particle clogging, and improve grinding efficiency. The firm combination of the stacked particles and their specific shape and arrangement make the grinding wheel have better stability and longer service life. By improving the structural design of the particles, excessive concentration of heat during the grinding process is avoided, and damage to the surface quality of the workpiece is reduced. The process is suitable for various types of abrasive particles, shapes and sizes, can meet different grinding needs, and is particularly suitable for the application of fine-grained abrasives. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a production process flow chart of the present invention;

[0024] Figure 2 It is a three-dimensional diagram of the grinding wheel structure of the present invention;

[0025] Figure 3 The present invention Figure 2 Enlarged schematic diagram at point A in the middle.

[0026] In the figure, 1 is the substrate; 2 is the accumulated abrasive. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1:

[0029] See also Figure 1 , a production process of stacked abrasive, the production process comprising the following steps:

[0030] Step 1: Pour multiple abrasive particles into the mold according to a specific particle size range. Select mineral sand as abrasive particles with a particle size range of 100-500 microns. After the surface treatment of the abrasive particles, ensure that the particles have good adhesion. Prepare a special mold with a rectangular shape and a size of 5cm×5cm×1cm for each mold. Pour the abrasive particles into the mold and distribute them evenly to ensure that there are no gaps between the particles. The filling density of the particles is controlled at about 80%.

[0031] Step 2: Press the abrasive particles so that they are tightly packed in the mold and form a predetermined shape; press the abrasive particles through a hydraulic system, the pressure is set to 1000N, and the pressing time is 5 minutes to ensure that the particles are compacted.

[0032] Step 3: Apply adhesive to the pressed abrasive particles to ensure firm bonding between the particles, fix the particles together and form stacked particles; inject epoxy resin adhesive, the injection amount is 10% of the total mass of the particles, and the epoxy resin glue forms a uniform thin layer on the surface of the particles to ensure firm bonding between the particles.

[0033] Step 4: The accumulated particles are cured, and the morphology of the accumulated particles is adjusted after the curing treatment to obtain a stacked abrasive with a specific morphology. The mold is placed in an oven for curing, the temperature is set to 80°C, and the curing time is 2 hours to ensure that the glue is completely cured and the bonding force of the particles reaches the maximum value. The solidified particles are morphologically adjusted to obtain a stacked abrasive with a specific morphology.

[0034] Embodiment 2:

[0035] See also Figure 2-3 This embodiment provides a technical solution based on the first embodiment: a grinding wheel using the above-mentioned accumulated abrasive, the grinding wheel comprising:

[0036] Substrate 1, the surface of the substrate is treated to enhance the adhesion with the abrasive particles;

[0037] Stacked abrasive 2, the stacked abrasive is evenly or irregularly bonded to the grinding wheel substrate.

[0038] In the present embodiment, foamed polyurethane is selected as the substrate of the grinding wheel, the thickness of the substrate is 1cm, and the diameter is 10cm. The substrate surface is roughened by sandblasting to enhance the bonding force with the accumulated abrasive particles, and the accumulated abrasive particles prepared in Example 1 are evenly distributed on the surface of the grinding wheel substrate. The bonding method of the particles adopts epoxy resin coating technology to ensure that the surface of the particles is exposed to avoid being completely covered by glue, so as to ensure continuous grinding, and the grinding wheel obtained after bonding is cured. After curing is completed, the surface of the grinding wheel is trimmed to ensure that the surface of the particles is uniform and removes excess glue. And the grinding performance test is carried out on the grinding wheel to ensure that the combination of the particles and the substrate is firm, and to check whether the grinding effect reaches the expected standard.

[0039] Embodiment 3: This embodiment provides a technical solution based on Embodiment 1 and Embodiment 2:

[0040] A CNC grinder was used to perform a grinding test on the workpiece made of aluminum alloy. The grinding wheel was brought into contact with the workpiece. The grinding speed was set to 30 m / s and the grinding pressure was set to 2 N / cm. 2 , continuous grinding is performed, and during the grinding process, the temperature of the grinding wheel, the surface quality of the workpiece, the grinding efficiency and other indicators are monitored. The test data are shown in Table 1:

[0041] Table 1: Test parameters and data in Example 3

[0042] Test items Data / Results Grinding time 15 minutes Grinding area 5cm×5cm Surface roughness (Ra) 0.25μm Improved grinding efficiency Improved by 30% (compared to traditional grinding wheels) Workpiece temperature change Maximum temperature 45℃ (about 10℃ lower than traditional grinding wheels) Number of surface defects No obvious scratches, burns or cracks Abrasive particle shedding rate Particle shedding rate is less than 0.5% Grinding force Average grinding force: 80N Grinding depth 0.2mm (within the specified grinding area)

[0043] Test analysis:

[0044] The grinding efficiency of the grinding wheel prepared in the present invention is improved:

[0045] Under the same grinding conditions, the stacked abrasive grinding wheel of the present invention has a grinding efficiency improved by about 30% compared with the traditional grinding wheel. This is mainly due to the fact that the stacked abrasive particles can continuously and efficiently cut during the grinding process, and the gaps between the particles can effectively prevent the grinding wheel from clogging. The surface roughness (Ra) of the workpiece after grinding with the grinding wheel of the present invention is 0.25μm. Compared with the surface roughness of the traditional grinding wheel (Ra is about 0.35μm), the surface is smoother and meets the requirements of high-precision grinding. Through heat measurement, it is found that the grinding wheel of the present invention generates less heat during the grinding process, and the maximum workpiece temperature is 45°C, which is significantly lower than the 55°C of the traditional grinding wheel. The effective dispersion of heat avoids damage to the workpiece surface caused by overheating and improves the quality of the workpiece. During the test, the shedding rate of the abrasive particles was less than 0.5%, which proves that the stacked abrasive particles are firmly bonded to the grinding wheel and the abrasive has a long service life during the entire grinding process. Under the test conditions, the average grinding force using the grinding wheel of the present invention is 80N, compared with 100N of the traditional grinding wheel, indicating that the grinding pressure provided by the grinding wheel of the present invention under the same grinding conditions is more stable and the grinding force control is more precise.

[0046] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production process for stacked abrasive, characterized in that: The production process comprises the following steps: Step 1: Pour a plurality of abrasive particles into a mold according to a specific particle size range; Step 2: Pressing the abrasive particles so that they are densely packed in the mold and formed into a predetermined shape; Step 3: applying adhesive to the pressed abrasive particles to ensure a firm bond between the particles, fix the particles together and form stacked particles; Step 4: solidifying the stacked particles, and adjusting the shape of the obtained stacked particles after the solidification to obtain a stacked abrasive with a specific shape.

2. The process for producing a stacked abrasive according to claim 1, characterized in that: The shape of the accumulated abrasive in step 4 is a pyramid, a prism or other specific shapes.

3. The production process of a stacked abrasive according to claim 1, characterized in that: The particle size of the abrasive particles ranges from 20 mesh to 3000 mesh.

4. The production process of a stacked abrasive according to claim 1, characterized in that: The adhesive in step 3 may be epoxy resin, rubber, polyurethane or a mixture thereof.

5. The production process of a stacked abrasive according to claim 1, characterized in that: The pressure of the pressing process in step 2 is 1000N, and the pressing time is 5 minutes.

6. A process for producing a stacked abrasive according to claim 1, characterized in that: The curing temperature in step 4 is 80° C. and the curing time is 2 hours.

7. A grinding wheel using a stacked abrasive produced by the process according to any one of claims 1 to 6, characterized in that: The grinding wheel comprises: A substrate (1), wherein the surface of the substrate is treated to enhance adhesion to abrasive particles; The stacked abrasive (2) is uniformly or irregularly bonded to the grinding wheel substrate.

8. A grinding wheel according to claim 7, characterized in that: The substrate is any one of a foam wheel, a metal substrate, a ceramic substrate, and a resin substrate.

Images