High-speed high-temperature-resistant resin binder grinding wheel

Abstract

The invention provides a high-speed high-temperature-resistant resin binder grinding wheel which comprises a base body and a grinding wheel body, and the grinding wheel body is prepared from 100 parts of grinding materials, 15-20 parts of binding agents and 5-13 parts of auxiliary materials. The grinding material comprises a main grinding material and an auxiliary grinding material, the main grinding material comprises 5-10 parts of diamond, 30-50 parts of brown fused alumina, 20-30 parts of cubic boron nitride and 5-10 parts of silicon carbide, and the auxiliary grinding material comprises 3-5 parts of white corundum and 5-8 parts of single crystal corundum; the binding agent comprises phenolic resin; and the auxiliary materials are polypropylene fibers for enhancing the hardness and toughness of the grinding wheel and high-temperature-resistant high-carbon steel wires. According to the grinding wheel, the polypropylene fibers are added into ingredients of the grinding wheel body, and due to the fact that the polypropylene fibers have certain strength, the polypropylene fibers can form an anchoring effect in the grinding wheel body and can instantly absorb certain damage energy, the brittleness of the grinding wheel body is reduced, and the toughness of the grinding wheel body is improved; the high-temperature-resistant high-carbon steel wire is added to serve as a supporting framework of the grinding wheel body, and the integrated structural strength of the grinding wheel body is further enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of grinding tools, and in particular relates to a high-speed, high-temperature-resistant resin-bonded grinding wheel. Background Art

[0002] As an ideal tool for grinding wear-resistant materials, high-speed high-temperature-resistant resin-bonded grinding wheels have been widely used in grinding hard alloys, ceramics, glass, stone, semiconductors and other materials. With the development of high-end equipment, wear-resistant materials emerge in an endless stream, especially high-temperature alloy materials and titanium alloys used in aerospace, which are generally characterized by high hardness and high toughness. When performing precision and ultra-precision grinding on such materials, grinding tools such as grinding wheels have higher requirements.

[0003] Resin-bonded cutting wheels produced with traditional processes and formulas are not flexible and cannot be bent. They become brittle and easily broken during use, and cannot be fed horizontally or reground. The operator must replace the equipment and special grinding wheel to reground the cutting burrs of the workpiece. In addition, cutting wear-resistant materials with grinding wheels is essentially a grinding process, and grinding will inevitably generate cutting heat. Excessive cutting heat will not only burn the workpiece, but also cause damage to the grinding wheel. In severe cases, when the grinding wheel rotates at high speed, it may even burst and fly out due to excessive stress. This situation poses a great threat to the personal safety of the operator.

[0004] Therefore, a new high-speed, high-temperature resistant resin bond grinding wheel is needed to solve the above problems. Summary of the invention

[0005] In order to overcome the above technical problems, the present invention provides a high-speed, high-temperature resistant resin bond grinding wheel, and the specific scheme is as follows: A high-speed, high-temperature-resistant resin-bonded grinding wheel comprises a substrate and a grinding wheel body fixed to the substrate, characterized in that the raw materials of the grinding wheel body are composed of: 100 parts of abrasive, 15-20 parts of a binder, and 5-13 parts of an auxiliary material; the abrasive comprises a main abrasive and an auxiliary abrasive, the main abrasive comprises 5-10 parts of diamond, 30-50 parts of brown corundum, 20-30 parts of cubic boron nitride, and 5-10 parts of silicon carbide, and the auxiliary abrasive comprises 3-5 parts of white corundum and 5-8 parts of single-crystal corundum; the binder comprises phenolic resin; the auxiliary material is a polypropylene fiber and a high-temperature-resistant high-carbon steel wire for enhancing the hardness and toughness of the grinding wheel; the grinding wheel body is made of the above raw materials through mixing, compression molding, sintering and curing.

[0006] Based on the above, the grinding wheel body also contains 5-10 parts of graphite powder for improving the fire resistance, fire prevention and heavy load resistance of the grinding wheel.

[0007] Based on the above, the abrasive also contains 10-15 parts of soluble inorganic salt.

[0008] Based on the above, the soluble inorganic salt is one or a combination of sodium sulfate, potassium sulfate or magnesium sulfate.

[0009] Based on the above, the particle size of the abrasive is 1-10 μm.

[0010] Based on the above, the upper and lower sides of the grinding wheel body are both provided with glass fiber mesh cloth coated with phenolic resin.

[0011] Based on the above, a plurality of grooves extending from the edge to the center are provided on both sides of the grinding wheel body.

[0012] The present invention has outstanding substantive features and significant progress compared to the prior art. Specifically, the present invention has the following advantages: 1. In the present invention, polypropylene fiber is added to the grinding wheel body ingredients. Since the polypropylene fiber itself has a certain strength, it can form an anchoring effect in the grinding wheel body, can absorb a certain amount of destructive energy in an instant, reduce the brittleness of the grinding wheel body, and improve the toughness of the grinding wheel body; high-temperature resistant high-carbon steel wire is added as the supporting skeleton of the grinding wheel body, which further strengthens the integrated structural strength of the grinding wheel body and can effectively prevent the grinding wheel from bursting when rotating at high speed.

[0013] 2. In the present invention, by adding graphite powder into the grinding wheel body, the softness, fire resistance and fireproof performance of the grinding wheel are effectively improved, thereby improving the practicality and service life of the grinding wheel.

[0014] 3. In the present invention, by providing a plurality of grooves extending from the edge to the center on both sides of the grinding wheel body, its structural design can improve the heat dissipation performance of the grinding wheel body, and at the same time can timely discharge the debris generated during the grinding of wear-resistant materials, reduce cutting heat, and improve cutting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] In the figure: 1. Grinding wheel body; 2. Base; 3. Glass fiber mesh cloth; 4. Groove. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described in detail below through specific implementation methods. Example

[0018] like Figure 1As shown, the present invention provides a high-speed, high-temperature resistant resin bond grinding wheel, comprising a substrate 2 and a grinding wheel body 1 fixed to the substrate 2, characterized in that the raw material composition of the grinding wheel body 1 is: 100 parts of abrasive, 15-20 parts of bonding agent, and 5-13 parts of auxiliary material; the abrasive comprises a main abrasive and an auxiliary abrasive, the main abrasive comprises 5-10 parts of diamond, 30-50 parts of brown corundum, 20-30 parts of cubic boron nitride, and 5-10 parts of silicon carbide, and the auxiliary abrasive comprises 3-5 parts of white corundum and 5-8 parts of single crystal corundum; the bonding agent comprises phenolic resin; the auxiliary material is polypropylene fiber and high-temperature resistant high-carbon steel wire for enhancing the hardness and toughness of the grinding wheel; the grinding wheel body 1 is made of the above raw materials through mixing, compression molding, sintering and curing.

[0019] The grinding wheel body 1 also contains 5-10 parts of graphite powder for improving the fire resistance, fire prevention and heavy load resistance of the grinding wheel.

[0020] The abrasive also contains 10-15 parts of soluble inorganic salts. Since the soluble inorganic salts dissolve in the grinding fluid during the grinding process, a large number of pores are formed on the surface of the grinding wheel, providing space for the grinding fluid and grinding chips, and the effect on the overall strength of the grinding wheel is negligible, thereby improving the service life of the grinding wheel.

[0021] The soluble inorganic salt is one or a combination of sodium sulfate, potassium sulfate or magnesium sulfate.

[0022] The particle size of the above abrasive is 1-10 μm.

[0023] In order to further improve the structural strength of the grinding wheel, glass fiber mesh cloth 3 coated with phenolic resin is provided on the upper and lower sides of the grinding wheel body 1.

[0024] In order to facilitate the timely discharge of the debris generated during the grinding process, especially the flying debris with larger particles, a plurality of grooves 4 extending from the edge to the center are provided on both sides of the grinding wheel body 1.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A high-speed, high-temperature-resistant resin-bonded grinding wheel, comprising a substrate (2) and a grinding wheel body (1) fixed to the substrate (2), characterized in that The raw material composition of the grinding wheel body (1) is: 100 parts of abrasive, 15-20 parts of binder, and 5-13 parts of auxiliary material; the abrasive comprises a main abrasive and an auxiliary abrasive, the main abrasive comprises 5-10 parts of diamond, 30-50 parts of brown corundum, 20-30 parts of cubic boron nitride, and 5-10 parts of silicon carbide, and the auxiliary abrasive comprises 3-5 parts of white corundum and 5-8 parts of single crystal corundum; the binder comprises phenolic resin; the auxiliary material is polypropylene fiber and high-temperature resistant high-carbon steel wire for enhancing the hardness and toughness of the grinding wheel; the grinding wheel body (1) is made of the above raw materials through mixing, compression molding, sintering and curing.

2. The high-speed, high-temperature-resistant resin-bonded grinding wheel according to claim 1, characterized in that: The grinding wheel body (1) also contains 5-10 parts of graphite powder for improving the fire resistance, fire prevention and heavy load resistance of the grinding wheel.

3. The high-speed, high-temperature-resistant resin-bonded grinding wheel according to claim 1, characterized in that: The abrasive also contains 10-15 parts of soluble inorganic salt.

4. The high-speed, high-temperature-resistant resin-bonded grinding wheel according to claim 3, characterized in that: The soluble inorganic salt is one or a combination of sodium sulfate, potassium sulfate or magnesium sulfate.

5. The high-speed, high-temperature-resistant resin-bonded grinding wheel according to any one of claims 1 to 4, characterized in that: The particle size of the abrasive is 1-10 μm.

6. The high-speed, high-temperature-resistant resin-bonded grinding wheel according to claim 1, characterized in that: Glass fiber mesh cloth (3) coated with phenolic resin is provided on the upper and lower sides of the grinding wheel body (1).

7. The high-speed, high-temperature-resistant resin-bonded grinding wheel according to claim 1, characterized in that: A plurality of grooves (4) extending from the edge to the center are provided on both sides of the grinding wheel body (1).

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