A diamond chamfering composite wheel and its preparation method

Abstract

The present application relates to a kind of diamond chamfer composite wheels and its preparation method, a kind of diamond chamfer composite wheels, including matrix and abrasive layer, abrasive layer uses metal binder as main body, resin binder is coated in the outside of metal binder, by diamond in metal binder, grinding is carried out with combined resin binder, and the higher precision of polishing, good use effect;A kind of preparation method of diamond chamfer composite wheel, including preparation metal binder, preparation resin binder, resin binder is coated in the outside of metal binder, is placed into mould and sintered, after polishing, deburring, diamond chamfer composite wheel is prepared, and comprehensive cost performance is high;Metal binder is the diamond of glycerol infiltration incorporated into metal powder stirring and sintered into shape;Resin binder is resin material, filler, reinforcing material and reinforcing toughening material are well weighed after volume ratio, combined with the mixing and stirring of the diamond incorporated into coupling agent, and then prepared after screening.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of diamond tools, in particular to a diamond chamfering composite wheel and a preparation method thereof. BACKGROUND

[0002] At present, the ceramic market has a very large output, and a production line with a monthly output of 600,000-1,000,000 is constantly emerging. Generally, the ceramic tiles need to be chamfered once around to facilitate the removal of sharp corners and make them smooth and beautiful.

[0003] In the chamfering process, due to the high line speed of the ceramic tiles, the currently used chamfering wheels are single resin diamond, resin silicon carbide or metal diamond chamfering wheels. These chamfering wheels either have a short service life or have low efficiency due to insufficient hardness, and in the use process, they are severely deformed, resulting in many corner scratches on the ceramic tiles, low comprehensive cost performance, and frequent replacement of the chamfering wheels, which increases the workload and causes the risk of work injury. SUMMARY

[0004] In order to solve the various deficiencies of the chamfering wheel in the background art, the present application provides a diamond chamfering composite wheel and a preparation method thereof, which has the characteristics of simple and reasonable structure, convenient use, long service life, low manufacturing cost, etc., and high comprehensive cost performance.

[0005] The diamond chamfering composite wheel and the preparation method thereof provided by the present application adopt the following technical scheme:

[0006] A diamond chamfering composite wheel, comprising a base body and an abrasive layer, wherein the abrasive layer adopts a metal binder as the main body, and a resin binder is coated outside the metal binder.

[0007] A preparation method of a diamond chamfering composite wheel, which is used to prepare the diamond chamfering composite wheel according to claim 1, and comprises the following steps:

[0008] S1, preparing a metal binder:

[0009] The metal powder is stirred for 2 hours after being weighed according to the volume ratio, the diamond is soaked in glycerol and then mixed with the metal powder for stirring for another 2 hours, and then the metal binder is prepared by sintering the mixture in a mold at 750 DEG C on a hot-pressing sintering machine.

[0010] S2, preparing a resin binder:

[0011] The resin material, filler, reinforcing material and reinforcing and toughening material are mixed and stirred with the diamond mixed with the coupling agent for 2 hours after being weighed according to the volume ratio, and then the resin binder is prepared by sieving the mixture.

[0012] S3, preparing a diamond chamfering composite wheel semi-finished product:

[0013] The prepared metal binder is placed in a mold, and the prepared resin binder is coated on the outside of the metal binder, and sintered at 195° C. on a fluidizer to obtain a semi-finished diamond chamfering composite wheel;

[0014] S4. Preparation of diamond chamfering composite wheel:

[0015] A grinding machine is used to grind irregular areas on the surface of a semi-finished diamond grinding disc to remove burrs on the surface of the semi-finished diamond grinding disc to obtain a diamond chamfering composite wheel.

[0016] Preferably, in step S1, the metal powder is made of the following raw materials in volume percentage: copper powder 300 mesh 30%~40%, iron-zinc alloy powder 600 mesh 40%~50%, nickel powder 300 mesh 3%~7%, silicon powder 200 mesh 3%~5%, aluminum powder 400 mesh 3%~10%, cryolite powder 500 mesh 4%~8%, calcium carbonate whiskers 600 mesh 1%~5%, zinc powder 300 mesh 3%~5%, and tin powder 200 mesh 1%~3%.

[0017] Preferably, in step S1, the diamonds soaked in glycerol are 3-5% by volume of 230 / 270 mesh and 1-3% by volume of 270 / 325 mesh.

[0018] Preferably, in step S2, the resin material uses high-temperature resistant phenolic resin 500 mesh 20-30%; the filler is made of the following raw materials in volume percentage: silicon carbide micropowder 100 mesh 8-15%, zinc oxide powder 500 mesh 5-10%, chromium oxide powder 500 mesh 5-10%, copper-clad iron powder 200 mesh 10-15%, and nano-silicon powder 100 mesh 5-10%; the reinforcing material uses 300 mesh zirconium oxide composite with a volume percentage of 5-8%; the reinforcing and toughening material uses silicon carbide whiskers, potassium titanate whiskers or calcium carbonate whiskers with a volume percentage of 5-10%.

[0019] Preferably, in step S2, the diamond doped with the coupling agent uses 230 / 270 mesh and 270 / 325 mesh with a volume percentage of 1-3%.

[0020] Preferably, in the preparation process of the diamond chamfering composite wheel, the diamond particle size is conventionally selected: 150#, 180#, 230 / 270, 270 / 325, 400# or 600#, and a variety of particle sizes can meet the use requirements.

[0021] In summary, the present invention has the following beneficial technical effects:

[0022] 1. The resin bond is coated on the outside of the metal bond, and the diamond in the metal bond is the main body. The grinding is carried out in combination with the resin bond, which has higher grinding precision. The combination of the two bonds has sufficient hardness and strong heat resistance, and is not easy to deform. The service life is twice as long as that of a single resin silicon carbide chamfering wheel or a metal diamond chamfering wheel. There is no need to frequently replace the chamfering wheel, and the overall cost performance is high.

[0023] 2. Adding zirconium oxide composites, silicon carbide whiskers, potassium titanate whiskers or calcium carbonate whiskers and other materials to improve the strength of the resin bond, coupled with reasonable geometric dimensions, the diamond chamfering composite wheel can achieve synchronous loss of metal bond and resin bond during use, the working surface is flat and not deformed during operation, and the use effect is good.

[0024] 3. After the metal binder is sintered and shaped, the coated resin binder is sintered for the second time in the mold to make the powder body produce sufficient particle bonding, bond the resin binder and the metal binder and cause densification to increase strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A method for preparing a diamond chamfering composite wheel according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic structural diagram of a diamond chamfering composite wheel according to an embodiment of the present invention;

[0027] Figure 3 It is a cross-sectional view of a diamond chamfering composite wheel according to an embodiment of the present invention.

[0028] Explanation of the accompanying drawings: 1. substrate; 2. abrasive layer; 3. metal binder; 4. resin binder. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 The present invention is further described in detail. An embodiment of the present invention discloses a diamond chamfering composite wheel and a preparation method thereof.

[0030] Reference Figure 2 、 Figure 3 A diamond chamfering composite wheel includes a base 1 and an abrasive layer 2. The abrasive layer 2 uses a metal binder 3 as a main body, and a resin binder 4 is coated on the outside of the metal binder 3.

[0031] A method for preparing a diamond chamfering composite wheel, preparing a diamond chamfering composite wheel according to claim 1, referring to Figure 1 , including the following steps:

[0032] S1. Preparation of metal binder 3:

[0033] The metal powder weighed by volume was stirred for 2 hours, the diamond was soaked with glycerin and then mixed with the metal powder and stirred for another 2 hours, the diamond was sieved and placed into a mold, and the metal binder 3 was prepared by sintering at 750°C on a hot press sintering machine.

[0034] S2. Preparation of resin binder 4:

[0035] The resin material, filler, reinforcement material and strengthening and toughening material were weighed according to the volume ratio, mixed with the diamond mixed with the coupling agent and stirred for 2 hours, and then sieved to obtain the resin bond 4;

[0036] S3. Preparation of semi-finished diamond chamfering composite wheel:

[0037] The prepared metal binder 3 is placed in a mold, and the prepared resin binder 4 is coated on the outside of the metal binder 3, and sintered at 195°C in a fluidizer to obtain a semi-finished diamond chamfering composite wheel;

[0038] S4. Preparation of diamond chamfering composite wheel:

[0039] A grinding machine is used to grind irregular areas on the surface of a semi-finished diamond grinding disc to remove burrs on the surface of the semi-finished diamond grinding disc to obtain a diamond chamfering composite wheel.

[0040] Reference Figure 1 In step S1, the metal powder is made of the following raw materials in volume percentage: copper powder 300 mesh 30%~40%, iron-zinc alloy powder 600 mesh 40%~50%, nickel powder 300 mesh 3%~7%, silicon powder 200 mesh 3%~5%, aluminum powder 400 mesh 3%~10%, cryolite powder 500 mesh 4%~8%, calcium carbonate whiskers 600 mesh 1%~5%, zinc powder 300 mesh 3%~5%, and tin powder 200 mesh 1%~3%.

[0041] Reference Figure 1 In step S1, the diamond soaked in glycerol uses 230 / 270 mesh with a volume percentage of 3-5% and 270 / 325 mesh with a volume percentage of 1-3%.

[0042] Reference Figure 1 In step S2, the resin material is 20-30% of high-temperature resistant phenolic resin 500 mesh; phenolic resin has good structural stability, can be used as an adhesive and increase high-temperature resistance. The diamond chamfering composite wheel of the present invention is applied to ceramic paving stones, and its heat resistance can reach more than 400°.

[0043] Reference Figure 1In step S2, the filler is made of the following raw materials in volume percentage: silicon carbide micropowder 100 mesh 8-15%, zinc oxide powder 500 mesh 5-10%, chromium oxide powder 500 mesh 5-10%, copper clad iron powder 200 mesh 10-15%, and nano silicon powder 100 mesh 5-10%.

[0044] Reference Figure 1 In step S2, the reinforcing material uses a 300-mesh zirconium oxide composite with a volume percentage of 5-8%. The zirconium oxide composite is a ceramic material doped with metal oxides, which supports the wheel disc structure of the composite wheel and increases stability. The reinforcing and toughening material uses a silicon carbide whisker, potassium titanate whisker or calcium carbonate whisker with a volume percentage of 5-10%. All three materials have very good high temperature resistance and high strength, and enhance toughness.

[0045] Reference Figure 1 In step S2, the diamond doped with the coupling agent adopts 230 / 270 mesh and 270 / 325 mesh with a volume percentage of 1-3%.

[0046] Reference Figure 1 In the preparation process of diamond chamfering composite wheel, the diamond particle size is conventionally selected: 150#, 180#, 230 / 270, 270 / 325, 400#, 600#.

[0047] The implementation principle of a diamond chamfering composite wheel and a preparation method thereof in an embodiment of the present invention is as follows: metal material is added to glycerol-soaked diamond according to volume percentage to prepare a metal binder 3, resin material, filler, reinforcing material and reinforcing and toughening material are mixed according to volume percentage, and diamond with a coupling agent is mixed to prepare a resin binder 4, the resin binder 4 is coated on the outside of the metal binder 3, and the two materials are sintered at high temperature to obtain a diamond chamfering composite wheel; adding multiple materials during the preparation process optimizes the wear resistance, high temperature resistance, stability, toughness, and enhances the use effect of the diamond chamfering composite wheel.

[0048] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for preparing a diamond chamfering composite wheel, for preparing a diamond chamfering composite wheel, wherein the diamond chamfering composite wheel comprises an abrasive layer (2), wherein the abrasive layer (2) adopts a metal binder (3) as a main body, and a resin binder (4) is coated on the outside of the metal binder (3), and is characterized in that: The preparation of a diamond chamfering composite wheel comprises the following steps: S1. Preparation of metal binder (3): The metal powder weighed by volume was stirred for 2 hours, the diamond was soaked with glycerin and then mixed with the metal powder and stirred for another 2 hours, after sieving, it was put into a mold and sintered at 750℃ on a hot press sintering machine to obtain a metal binder (3); S2. Preparation of resin binder (4): The resin material, filler, reinforcement material and strengthening and toughening material are weighed according to the volume ratio, mixed with diamond mixed with coupling agent for 2 hours, and then sieved to obtain resin binder (4); The filler is made of the following raw materials in volume percentage: 8-15% of 100 mesh silicon carbide micropowder, 5-10% of 500 mesh zinc oxide powder, 5-10% of 500 mesh chromium oxide powder, 10-15% of 200 mesh copper-clad iron powder, and 5-10% of 100 mesh nano-silicon powder; the reinforcing material adopts 5-8% by volume of 300 mesh zirconium oxide composite; the reinforcing and toughening material adopts 5-10% by volume of silicon carbide whiskers, potassium titanate whiskers or calcium carbonate whiskers; S3. Preparation of semi-finished diamond chamfering composite wheel: The prepared metal binder (3) is placed in a mold, and the prepared resin binder (4) is coated on the outside of the metal binder (3), and sintered at 195° C. on a fluidizer to obtain a semi-finished diamond chamfering composite wheel; S4. Preparation of diamond chamfering composite wheel: A grinding machine is used to grind irregular areas on the surface of a semi-finished diamond grinding disc to remove burrs on the surface of the semi-finished diamond grinding disc to obtain a diamond chamfering composite wheel.

2. The method for preparing a diamond chamfering composite wheel according to claim 1, characterized in that: In step S1, the metal powder is made of the following raw materials in volume percentage: copper powder 300 mesh 30%~40%, iron-zinc alloy powder 600 mesh 40%~50%, nickel powder 300 mesh 3%~7%, silicon powder 200 mesh 3%~5%, aluminum powder 400 mesh 3%~10%, cryolite powder 500 mesh 4%~8%, calcium carbonate whiskers 600 mesh 1%~5%, zinc powder 300 mesh 3%~5%, and tin powder 200 mesh 1%~3%.

3. The method for preparing a diamond chamfering composite wheel according to claim 1, characterized in that: In step S1, the diamonds soaked in glycerol are 3-5% by volume of 230 / 270 mesh and 1-3% by volume of 270 / 325 mesh.

4. The method for preparing a diamond chamfering composite wheel according to claim 1, characterized in that: In step S2, the resin material is 20-30% high temperature resistant phenolic resin 500 mesh.

5. The method for preparing a diamond chamfering composite wheel according to claim 1, characterized in that: In step S2, the diamond doped with the coupling agent uses 230 / 270 mesh and 270 / 325 mesh with a volume percentage of 1-3%.

6. The method for preparing a diamond chamfering composite wheel according to claim 1, characterized in that: In the preparation process of diamond chamfering composite wheel, the diamond particle size is conventionally selected: 150#, 180#, 230 / 270, 270 / 325, 400# or 600#.

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