Titanium plate elastic grinding block material and titanium plate elastic grinding block

Abstract

The invention discloses a titanium plate elastic grinding block material and a titanium plate elastic grinding block. The titanium plate elastic grinding block material is prepared from, by mass, 20%-25% of boron modified phenolic resin, 20%-25% of cardanol modified phenolic resin, 5%-8% of diamond, 10%-15% of silicon carbide, 5%-10% of white corundum, 5%-10% of potassium titanate whiskers, 5%-10% of basic magnesium sulfate whiskers and 8%-18% of filler. According to the titanium plate elastic grinding block material, the boron modified resin is selected, so that the temperature resistance of the grinding block can be improved, and the basic magnesium sulfate whiskers with flame retardance and cooling and heat dissipation performance are added, so that the high-temperature working performance of the grinding block is improved; moreover, cardanol modified phenolic resin is selected, so that the toughness and impact resistance of the grinding block can be improved, and potassium titanate whiskers are added, so that the strength and toughness of a matrix are improved, the holding force on diamond is improved, the wear resistance of a product is improved, and the cost performance is improved.

Description

Technical Field

[0001] The invention relates to the technical field of titanium plate grinding and polishing, in particular to a titanium plate elastic grinding block material and a titanium plate elastic grinding block. Background Art

[0002] The market output value of the titanium industry last year was approximately 50 billion, and titanium plate production is the source of the entire production chain; titanium and titanium alloy plates, as a light metal material, have the advantages of high strength, good corrosion resistance, and stable properties, and are widely used in aerospace, shipbuilding, chemical engineering and other fields; however, since hot-rolled titanium plates and titanium alloys will form an oxide layer on the surface, it not only affects the appearance of the titanium alloy, but also has an adverse effect on the surface bonding between the titanium alloy and other coatings, so it is necessary to perform surface treatment; pickling is currently a common treatment method, which uses strong acids (HCL, HN03, HF, H2SO4, etc.) to remove surface oxide scale and remove surface residues The oxide film can improve the surface finish and surface effect of titanium and titanium alloy products, and enhance the quality of titanium and titanium alloy products; however, the pickling process pollutes the environment too much, and it is urgent to explore new processes to remove the oxide scale; currently some manufacturers try to use abrasive belts to polish titanium plates to remove the oxide scale, but the surface of the titanium plate after grinding and polishing has large wear marks, and the consistency of finish and appearance is poor; some manufacturers also use resin grinding blocks to grind titanium plates, but the friction and impact force generated during the grinding of titanium plates are large, and the brittleness of phenolic resin is relatively large, resulting in low wear resistance and fast consumption of resin grinding blocks; in addition, during the grinding process of titanium plates, large heat is generated and the temperature is high, which causes the performance of the resin grinding blocks to decline under high temperature conditions and the grinding effect is poor.

[0003] In view of this, the inventor has made in-depth research and actively conducted improved trials to develop and design the present invention in view of the many deficiencies and inconveniences caused by the imperfections in the above-mentioned titanium plate grinding and polishing technology. Summary of the invention

[0004] The object of the present invention is to provide a titanium plate elastic abrasive block material and a titanium plate elastic abrasive block. The titanium plate elastic abrasive block material uses a boron-modified resin to improve the temperature resistance of the abrasive block, and adds basic magnesium sulfate whiskers with flame retardancy and cooling and heat dissipation properties to improve the high-temperature working performance of the abrasive block; and the use of cardanol-modified phenolic resin can increase the toughness and impact resistance of the abrasive block, and adds potassium titanate whiskers to improve the strength and toughness of the matrix, improve the holding force on diamonds, increase the wear resistance of the product, and increase the cost performance.

[0005] In order to achieve the above object, the solution of the present invention is:

[0006] A titanium plate elastic grinding block material, the components and mass percentages of the titanium plate elastic grinding block material are: 20-25% of boron-modified phenolic resin, 20-25% of cardanol-modified phenolic resin, 5%-8% of diamond, 10%-15% of silicon carbide, 5%-10% of white corundum, 5%-10% of potassium titanate whiskers, 5%-10% of basic magnesium sulfate whiskers, and 8%-18% of fillers.

[0007] The components of the filler and their mass percentages in the titanium plate elastic grinding block material are: chromium oxide 1% to 2%, zinc oxide 5% to 10%, calcium carbonate 1% to 3%, and magnesium oxide 1% to 3%.

[0008] The components and mass percentages of the titanium plate elastic grinding block material are as follows: 24% of boron-modified phenolic resin, 24% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 6% of basic magnesium sulfate whisker, 1% of chromium oxide, 10% of zinc oxide, 2% of calcium carbonate and 2% of magnesium oxide.

[0009] The components and mass percentages of the titanium plate elastic grinding block material are as follows: 22% of boron-modified phenolic resin, 22% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 10% of basic magnesium sulfate whisker, 1% of chromium oxide, 8% of zinc oxide, 3% of calcium carbonate and 3% of magnesium oxide.

[0010] The components and mass percentages of the titanium plate elastic grinding block material are as follows: 25% of boron-modified phenolic resin, 19% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 10% of basic magnesium sulfate whisker, 2% of chromium oxide, 9% of zinc oxide, 3% of calcium carbonate and 1% of magnesium oxide.

[0011] The diamond has a particle size of one or more of 100 mesh, 120 mesh, 150 mesh and / or 180 mesh.

[0012] A titanium plate elastic grinding block is made of the titanium plate elastic grinding block material.

[0013] The titanium plate elastic grinding block is made of titanium plate elastic grinding block material at a temperature of 150-170 degrees and hot pressing for 20 minutes.

[0014] After demoulding, the titanium plate elastic grinding block is bonded to one side of the rubber block; the other side of the rubber block is bonded to a plastic bottom card.

[0015] The hardness of the rubber block is 40 to 50 degrees.

[0016] After adopting the above structure, the titanium plate elastic grinding block material and the titanium plate elastic grinding block of the present invention are provided. The boron-modified resin in the titanium plate elastic grinding block material can improve the temperature resistance of the grinding block, and the basic magnesium sulfate whisker with flame retardancy and cooling and heat dissipation performance is added to improve the high-temperature working performance of the grinding block; and the cardanol-modified phenolic resin can increase the toughness and impact resistance of the grinding block, and potassium titanate whiskers are added to improve the strength and toughness of the matrix, improve the holding force on diamonds, increase the wear resistance of the product, and increase the cost performance; the titanium plate elastic grinding block made of the titanium plate elastic grinding block material has a good effect on the rough grinding of the grinding block. The titanium plate is further finely ground to remove the remaining 10% to 20% of the scale on the titanium plate and eliminate the lines caused by rough grinding, making the surface delicate, smooth and uniform; it has the advantages of good surface uniformity, good wear resistance and low grinding and polishing cost; when grinding and polishing the titanium plate, the titanium plate resin cloth can be used to remove more than 80% of the scale on the titanium plate, and the subsequent matching titanium plate elastic grinding block is finely ground to make the surface smooth and uniform. The combination of the two products reduces the cost of titanium plate surface treatment by 50% to 60%, improves the processing efficiency of titanium plate by 100%, and is environmentally friendly and pollution-free; it has the following beneficial effects:

[0017] 1. The present invention uses a boron-modified phenolic resin. The boron-modified phenolic resin is a phenolic resin in which an inorganic boron element is introduced into the molecular structure. The boron-modified phenolic resin has better heat resistance, instantaneous high temperature resistance and mechanical properties than the phenolic resin. The heat resistance, instantaneous high temperature resistance and ablation resistance of the boron-modified phenolic resin are much better than those of ordinary phenolic resin. When the titanium plate elastic grinding block is used to grind and polish the titanium plate, the friction force is large. Even if there is water cooling, instantaneous high temperature will still be generated on the friction surface, and sparks will appear. The use of the boron-modified phenolic resin can prevent the high temperature from causing local carbonization of the resin and losing the holding force on the diamond.

[0018] The boron-modified phenolic resin is chemically modified, i.e., the boron element is grafted into the molecular chain of the phenolic resin; according to the calculation in the molecular formula, the P element accounts for about 4% of the total molecular weight of the phenolic resin (the boron-modified resin is not formed by physical mixing, but is generated by chemical reaction, and the boron element is a part of the resin);

[0019] 2. In order to further improve the performance of the product at high temperature, the present invention uses basic magnesium sulfate whiskers, the molecular formula of which is MgSO4·5Mg(OH)2·3H2O, which has flame retardancy and cooling and heat dissipation properties to improve the high-temperature working performance of the grinding block; on the one hand, the basic magnesium sulfate whiskers can replace part of the potassium titanate whiskers, play a similar role in dispersing energy and preventing crack expansion, thereby achieving the effect of enhancing the wear resistance of the product; on the other hand, the basic magnesium sulfate whiskers will dehydrate and decompose at about 260 degrees Celsius to produce water vapor, and the generated water vapor has the effect of heat dissipation and cooling, which can improve the high-temperature performance of the grinding block;

[0020] 3. The present invention uses cardanol-modified phenolic resin to increase the toughness and impact resistance of the grinding block, and adds potassium titanate whiskers to improve the strength and toughness of the matrix, improve the holding force on diamonds, increase the wear resistance of the product, and increase the cost performance; wherein, the cardanol-modified phenolic resin is a modified phenolic resin product that can be mass-produced and developed in the past two years. The main feature is that there is a long carbon chain at the meta position of cardanol, which can improve the impact resistance of the resin and increase the wear resistance; the samples provided by the manufacturer have been tested and the wear resistance can be improved by more than 30% compared with the phenolic resin currently used by our company, but the resin has the disadvantage of poor temperature resistance; therefore, it is necessary to mix with boron-modified phenolic resin for use, determine a suitable ratio, and solve the problems of impact resistance and temperature resistance required for titanium plate grinding at the same time;

[0021] 4. The potassium titanate whisker in the titanium plate elastic grinding block material of the present invention has few defects in the crystal, is a fiber material with very high strength, has good adhesion to resin, can significantly improve the strength and toughness of the matrix, improve the holding force of diamond, and increase the wear resistance of the product; the reason why copper powder is no longer used to improve the wear resistance is that the addition of copper powder will reduce the polishing effect of the titanium plate, and the fineness and uniformity of the titanium plate are not up to standard;

[0022] 5. The production process of the elastic grinding block of the titanium plate of the present invention includes the following steps: batching - mixing - hot pressing at 150-170 degrees for about 20 minutes - demolding - bonding the rubber block and the plastic card; in terms of structure, the elastic rubber block is added to buffer the cutting force and avoid deep grinding marks; in addition, the small-particle cutter head can fully polish the uneven parts of the titanium plate to achieve good surface consistency. DETAILED DESCRIPTION

[0023] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0024] The invention discloses a titanium plate elastic grinding block material. The components and mass percentages of the titanium plate elastic grinding block material are as follows: 20-25% of boron-modified phenolic resin, 20-25% of cardanol-modified phenolic resin, 5%-8% of diamond, 10%-15% of silicon carbide, 5%-10% of white corundum, 5%-10% of potassium titanate whiskers, 5%-10% of basic magnesium sulfate whiskers, and 8%-18% of fillers.

[0025] The components of the filler of the present invention and the mass percentage of the components in the titanium plate elastic grinding block material are: chromium oxide 1%-2%, zinc oxide 5%-10%, calcium carbonate 1%-3%, and magnesium oxide 1%-3%.

[0026] The components and mass percentages of the titanium plate elastic grinding block material of the present invention are as follows: 24% of boron-modified phenolic resin, 24% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 6% of basic magnesium sulfate whisker, 1% of chromium oxide, 10% of zinc oxide, 2% of calcium carbonate and 2% of magnesium oxide.

[0027] The components and mass percentages of the titanium plate elastic grinding block material of the present invention are as follows: 22% of boron-modified phenolic resin, 22% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 10% of basic magnesium sulfate whisker, 1% of chromium oxide, 8% of zinc oxide, 3% of calcium carbonate and 3% of magnesium oxide.

[0028] The components and mass percentages of the titanium plate elastic grinding block material of the present invention are as follows: 25% of boron-modified phenolic resin, 19% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 10% of basic magnesium sulfate whisker, 2% of chromium oxide, 9% of zinc oxide, 3% of calcium carbonate and 1% of magnesium oxide.

[0029] The diamond particle size of the present invention is one or more of 100 mesh, 120 mesh, 150 mesh and / or 180 mesh.

[0030] The invention also discloses a titanium plate elastic grinding block, which is made of the titanium plate elastic grinding block material.

[0031] The titanium plate elastic grinding block of the present invention is made of titanium plate elastic grinding block material at a temperature of 150-170 degrees and hot pressing for 20 minutes.

[0032] After demoulding, the titanium plate elastic grinding block of the present invention is bonded to one side of the rubber block; the other side of the rubber block is bonded to a plastic bottom card.

[0033] The hardness of the rubber block of the present invention is 40 to 50 degrees. Because the titanium plate to be ground is a metal material, the hardness of the rubber block should be higher. In terms of grinding and polishing the titanium plate, the selection of the hardness of the rubber is very critical, which directly affects the amount of grinding of the titanium plate and whether the rough texture left by the previous polishing can be completely removed. The grinding amount must be at least 0.03 mm to be completely removed.

[0034] Rubber hardness Grinding amount life 30～35 0.01mm 270min 35～40 0.02mm 250min 40～45 0.04mm 240min 45～50 0.45mm 230min 50～55 0.45mm 180min

[0035] It can be seen from the table that the rubber hardness above 40 degrees has a higher grinding amount, but after the hardness exceeds 50, the life is reduced too much, so this application selects a rubber hardness of 40 to 50 degrees.

[0036] Embodiment 1

[0037] A titanium plate elastic grinding block material, the components and mass percentages of the titanium plate elastic grinding block material are: 24% of boron-modified phenolic resin, 24% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 6% of basic magnesium sulfate whisker, 1% of chromium oxide, 10% of zinc oxide, 2% of calcium carbonate and 2% of magnesium oxide.

[0038] Embodiment 2

[0039] A titanium plate elastic grinding block material, the components and mass percentages of the titanium plate elastic grinding block material are: 22% of boron-modified phenolic resin, 22% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 10% of basic magnesium sulfate whisker, 1% of chromium oxide, 8% of zinc oxide, 3% of calcium carbonate and 3% of magnesium oxide.

[0040] Embodiment 3

[0041] A titanium plate elastic grinding block material, the components and mass percentages of the titanium plate elastic grinding block material are: 25% of boron-modified phenolic resin, 19% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 10% of basic magnesium sulfate whisker, 2% of chromium oxide, 9% of zinc oxide, 3% of calcium carbonate, and 1% of magnesium oxide.

[0042] Comparative Example

[0043] A titanium plate elastic grinding block material, the components and mass percentages of the titanium plate elastic grinding block material are: 25% of boron-modified phenolic resin, 25% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 4% of basic magnesium sulfate whisker, 2% of chromium oxide, 10% of zinc oxide, 2% of calcium carbonate, and 1% of magnesium oxide.

[0044] The titanium plate elastic grinding block material and the titanium plate elastic grinding block of the present invention are characterized in that the boron-modified resin is selected in the titanium plate elastic grinding block material to improve the temperature resistance of the grinding block, and basic magnesium sulfate whiskers with flame retardancy and cooling and heat dissipation performance are added to improve the high-temperature working performance of the grinding block; the cardanol-modified phenolic resin is selected to increase the toughness and impact resistance of the grinding block, and potassium titanate whiskers are added to improve the strength and toughness of the matrix, improve the holding force on diamonds, increase the wear resistance of the product, and increase the cost performance; the titanium plate elastic grinding block made of the titanium plate elastic grinding block material has good performance on the rough grinding of the grinding block. The titanium plate is further finely ground to remove the remaining 10% to 20% of the scale on the titanium plate and eliminate the lines caused by rough grinding, making the surface fine, smooth and uniform; it has the advantages of good surface uniformity, good wear resistance and low grinding and polishing cost; when grinding and polishing the titanium plate, the titanium plate resin cloth is first used to remove more than 80% of the scale on the titanium plate, and the subsequent matching titanium plate elastic grinding block is finely ground to make the surface smooth and uniform. The combination of the two products reduces the cost of titanium plate surface treatment by 50% to 60%, improves the processing efficiency of titanium plate by 100%, and is environmentally friendly and pollution-free; it has the following features

[0045] Beneficial effects:

[0046] 1. The present invention uses a boron-modified phenolic resin. The boron-modified phenolic resin is a phenolic resin in which an inorganic boron element is introduced into the molecular structure. The boron-modified phenolic resin has better heat resistance, instantaneous high temperature resistance and mechanical properties than the phenolic resin. The heat resistance, instantaneous high temperature resistance and ablation resistance of the boron-modified phenolic resin are much better than those of ordinary phenolic resin. When the titanium plate elastic grinding block is used to grind and polish the titanium plate, the friction force is large. Even if there is water cooling, instantaneous high temperature will still be generated on the friction surface, and sparks will appear. The use of the boron-modified phenolic resin can prevent the high temperature from causing local carbonization of the resin and losing the holding force on the diamond.

[0047] The boron-modified phenolic resin is chemically modified, i.e., the boron element is grafted into the molecular chain of the phenolic resin; according to the calculation in the molecular formula, the P element accounts for about 4% of the total molecular weight of the phenolic resin (the boron-modified resin is not formed by physical mixing, but is generated by chemical reaction, and the boron element is a part of the resin);

[0048] 2. In order to further improve the performance of the product at high temperature, the present invention uses basic magnesium sulfate whiskers, the molecular formula of which is MgSO4·5Mg(OH)2·3H2O, which has flame retardancy and cooling and heat dissipation properties to improve the high-temperature working performance of the grinding block; on the one hand, the basic magnesium sulfate whiskers can replace part of the potassium titanate whiskers, play a similar role in dispersing energy and preventing crack expansion, thereby achieving the effect of enhancing the wear resistance of the product; on the other hand, the basic magnesium sulfate whiskers will dehydrate and decompose at about 260 degrees Celsius to generate water vapor, and the generated water vapor has the effect of heat dissipation and cooling, which can improve the high-temperature performance of the grinding block;

[0049] 3. The present invention uses cardanol-modified phenolic resin to increase the toughness and impact resistance of the grinding block, and adds potassium titanate whiskers to improve the strength and toughness of the matrix, improve the holding force on diamonds, increase the wear resistance of the product, and increase the cost performance; wherein, the cardanol-modified phenolic resin is a modified phenolic resin product that can be mass-produced and developed in the past two years. The main feature is that there is a long carbon chain at the meta position of cardanol, which can improve the impact resistance of the resin and increase the wear resistance; the samples provided by the manufacturer have been tested and the wear resistance can be improved by more than 30% compared with the phenolic resin currently used by our company, but the resin has the disadvantage of poor temperature resistance; therefore, it is necessary to mix with boron-modified phenolic resin for use, determine a suitable ratio, and solve the problems of impact resistance and temperature resistance required for titanium plate grinding at the same time;

[0050] 4. The potassium titanate whisker in the titanium plate elastic grinding block material of the present invention has few defects in the crystal, is a fiber material with very high strength, has good adhesion to resin, can significantly improve the strength and toughness of the matrix, improve the holding force of diamond, and increase the wear resistance of the product; the reason why copper powder is no longer used to improve the wear resistance is that the addition of copper powder will reduce the polishing effect of the titanium plate, and the fineness and uniformity of the titanium plate are not up to standard;

[0051] 5. The production process of the elastic grinding block of the titanium plate of the present invention includes the following steps: batching - mixing - hot pressing at 150-170 degrees for about 20 minutes - demolding - bonding the rubber block and the plastic card; in terms of structure, the elastic rubber block is added to buffer the cutting force and avoid deep grinding marks; in addition, the small-particle cutter head can fully polish the uneven parts of the titanium plate to achieve good surface consistency.

[0052] The present invention has been tested and found that when the ratio of boron modified resin to cardanol modified resin is 1:1 and the addition amount of basic magnesium sulfate whisker is more than 5%, the best effect is achieved and the wear resistance can be improved by more than 20%. The specific test results are shown in the table below.

[0053]

[0054] The above embodiments do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A titanium plate elastic grinding block material, characterized in that: The components and mass percentages of the titanium plate elastic grinding block material are: 20-25% of boron-modified phenolic resin, 20-25% of cardanol-modified phenolic resin, 5%-8% of diamond, 10%-15% of silicon carbide, 5%-10% of white corundum, 5%-10% of potassium titanate whiskers, 5%-10% of basic magnesium sulfate whiskers, and 8%-18% of fillers.

2. A titanium plate elastic grinding block material as claimed in claim 1, characterized in that: The components of the filler and their mass percentages in the titanium plate elastic grinding block material are as follows: chromium oxide 1% to 2%, zinc oxide 5% to 10%, calcium carbonate 1% to 3%, and magnesium oxide 1% to 3%.

3. A titanium plate elastic grinding block material as claimed in claim 2, characterized in that: The components and mass percentages of the titanium plate elastic grinding block material are as follows: 24% of boron-modified phenolic resin, 24% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 6% of basic magnesium sulfate whisker, 1% of chromium oxide, 10% of zinc oxide, 2% of calcium carbonate and 2% of magnesium oxide.

4. A titanium plate elastic grinding block material as claimed in claim 2, characterized in that: The components and mass percentages of the titanium plate elastic grinding block material are as follows: 22% of boron-modified phenolic resin, 22% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 10% of basic magnesium sulfate whisker, 1% of chromium oxide, 8% of zinc oxide, 3% of calcium carbonate and 3% of magnesium oxide.

5. The titanium plate elastic grinding block material as claimed in claim 2, characterized in that: The components and mass percentages of the titanium plate elastic grinding block material are as follows: 25% of boron-modified phenolic resin, 19% of cardanol-modified phenolic resin, 5% of diamond, 10% of silicon carbide, 10% of white corundum, 6% of potassium titanate whisker, 10% of basic magnesium sulfate whisker, 2% of chromium oxide, 9% of zinc oxide, 3% of calcium carbonate and 1% of magnesium oxide.

6. The titanium plate elastic grinding block material according to claim 1, characterized in that: The diamond has a particle size of one or more of 100 mesh, 120 mesh, 150 mesh and / or 180 mesh.

7. A titanium plate elastic grinding block, characterized in that: The titanium plate elastic grinding block is made of the titanium plate elastic grinding block material as described in any one of claims 1-6.

8. A titanium plate elastic grinding block as claimed in claim 7, characterized in that: The titanium plate elastic grinding block is made of titanium plate elastic grinding block material at a temperature of 150-170 degrees and hot pressing for 20 minutes.

9. A titanium plate elastic grinding block as claimed in claim 7, characterized in that: After demoulding, the titanium plate elastic grinding block is bonded to one side of the rubber block; the other side of the rubber block is bonded to a plastic bottom card.

10. A titanium plate elastic grinding block as claimed in claim 9, characterized in that: The hardness of the rubber block is 40 to 50 degrees.

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