Mineral composite material suitable for industrial gauge block measuring tool and preparation method thereof

Abstract

The invention belongs to the field of preparation of industrial block gauge measuring tools, three-coordinate platforms, precision machine tools, marine bearings and acid-resistant, alkali-resistant and corrosion-resistant mineral materials, and particularly relates to a mineral composite material suitable for industrial block gauge measuring tools and a preparation method thereof. The mineral composite material is prepared from the following raw materials: basalt, silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, iron oxide, titanium oxide, potassium oxide, sodium oxide, barium silicate, sodium fluosilicate, arsenic oxide and antimony oxide.By limiting the raw material composition of the mineral composite material, basalt is selected from waste materials to serve as a main raw material, so that the utilization rate of waste resources is increased, and the utilization rate of the waste resources is increased; the cost is greatly reduced, and the prepared mineral composite material is high in hardness and meets the use requirements of gauge block measuring tools.

Description

Technical Field

[0001] The invention belongs to the field of industrial block gauges, three-coordinate platforms, precision machine tools, marine bearings, and acid-resistant, alkali-resistant, and corrosion-resistant mineral material preparation, and specifically relates to a mineral composite material suitable for industrial block gauges and a preparation method thereof. Background Art

[0002] Standard block gauges have been widely used in industry and academia as the standard for length measurement. Currently, block gauges are usually made of steel or alloy steel, and a few are made of ceramic materials.

[0003] The surface of steel or alloy steel block gauges is easily oxidized, so such block gauges must be oiled when stored and must go through several degreasing procedures when used again to avoid measurement errors caused by the thickness of the oil film. However, during degreasing, the atmospheric dust particles attached to the surface of the oil film can easily cause scratches on the surface of the block gauge, thereby affecting the accuracy of the measuring instrument. Therefore, it is extremely inconvenient to use such metal block gauges.

[0004] Ceramic materials such as zirconia, alumina, silicon carbide or silicon nitride have excellent properties such as high strength, hardness and non-oxidation compared to metal materials, and are gradually being processed using block gauges; however, the production cost of preparing block gauges using zirconia, alumina, silicon carbide or silicon nitride as raw materials is relatively high and needs further improvement. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a mineral composite material suitable for industrial block gauges and a preparation method thereof.

[0006] The present invention adopts the following technical solution: A mineral composite material suitable for industrial block gauges and measuring tools, comprising the following raw materials in parts by weight: 50 parts of basalt, 25.81-28.64 parts of silicon dioxide, 6.48-7.94 parts of aluminum oxide, 2.69-3.31 parts of calcium oxide, 1.95-2.36 parts of magnesium oxide, 4.74-5.85 parts of iron oxide, 0.28-0.37 parts of titanium oxide, 1.08-1.49 parts of potassium oxide, 1.75-2.06 parts of sodium oxide, 0.76-0.95 parts of barium silicate, 0.27-0.42 parts of sodium fluorosilicate, 0.11-0.22 parts of arsenic oxide, and 0.18-0.29 parts of antimony oxide.

[0007] A method for preparing a mineral composite material suitable for industrial block gauges comprises the following steps: Step 1, weighing, crushing, mixing and ball-milling the raw materials according to the required weight to obtain 1-2 mm powder; Step 2: pour the powder into a smelting furnace to melt it into liquid; Step three, preheat the mold, then pour the slurry into the mold, and when the slurry is cooled to 480-530°C, send it into the kiln, heat it to 760-820°C, keep it warm for 20-30 hours, cool it to room temperature, demould it, and obtain the mineral composite material.

[0008] Furthermore, in step 2, the melting temperature of the powder is 1330-1380°C.

[0009] Furthermore, in step three, the preheating temperature of the mold is 420-480°C.

[0010] Furthermore, in step three, the feed liquid is cooled to 480-530° C. at 1° C. / min.

[0011] Furthermore, in step three, after being sent into the kiln, the temperature is raised to 760-820°C at 2°C / min, and after heat preservation treatment for 20-30 hours, it is naturally cooled to room temperature.

[0012] From the above description of the present invention, it can be seen that compared with the prior art, the beneficial effects of the present invention are as follows: the present application limits the raw material composition of the mineral composite material, selects basalt from waste materials as the main raw material, so as to improve the utilization rate of waste resources and greatly reduce the cost, and the prepared mineral composite material has high hardness, which meets the use requirements of block gauges and measuring tools; wherein, its preparation method is further limited, and the molten liquid is subjected to a cooling-heating process to eliminate the internal stress of the mineral composite material formed by cooling, prevent the shrinkage caused by the rapid drop in temperature, and further ensure that the prepared mineral composite material is free of cracks, has high strength, good stability, is not easy to deform, and can be used for the preparation of block gauges and measuring tools; and the powder is directly heated to a molten state to make the interior of the prepared mineral composite material dense, greatly reducing the presence of pores, which affects the finished product quality of the prepared block gauges and measuring tools and their subsequent use. DETAILED DESCRIPTION

[0013] The present invention is further described below through specific implementation modes.

[0014] A mineral composite material suitable for industrial block gauges and measuring tools, with a thickness of 20-30 cm, is composed of the following raw materials in parts by weight: 50 parts of basalt, 25.81-28.64 parts of silicon dioxide, 6.48-7.94 parts of aluminum oxide, 2.69-3.31 parts of calcium oxide, 1.95-2.36 parts of magnesium oxide, 4.74-5.85 parts of iron oxide, 0.28-0.37 parts of titanium oxide, 1.08-1.49 parts of potassium oxide, 1.75-2.06 parts of sodium oxide, 0.76-0.95 parts of barium silicate, 0.27-0.42 parts of sodium fluorosilicate, 0.11-0.22 parts of arsenic oxide, and 0.18-0.29 parts of antimony oxide.

[0015] The preparation method thereof comprises the following steps: Step 1, weighing, crushing, mixing and ball-milling the raw materials according to the required weight to obtain 1-2 mm powder; Step 2: Pour the powder into a smelting furnace and melt it into liquid at 1330-1380°C; Step three, preheat the mold to a temperature of 420-480°C, then pour the slurry into the mold, and when the slurry is cooled to 480-530°C at 1°C / min, send it into a kiln and heat it to 760-820°C at 2°C / min. After heat preservation for 20-30 hours, naturally cool it to room temperature, demold it, and obtain the mineral composite material.

[0016] Example 1 A mineral composite material suitable for industrial block gauges has a thickness of 20 cm and is composed of the following raw materials in parts by weight: 50 parts of basalt, 25.81 parts of silicon dioxide, 7.94 parts of aluminum oxide, 3.31 parts of calcium oxide, 2.36 parts of magnesium oxide, 5.85 parts of iron oxide, 0.28 parts of titanium oxide, 1.08 parts of potassium oxide, 1.75 parts of sodium oxide, 0.95 parts of barium silicate, 0.27 parts of sodium fluorosilicate, 0.11 parts of arsenic oxide, and 0.29 parts of antimony oxide.

[0017] The preparation method thereof comprises the following steps: Step 1, weighing, crushing, mixing and ball-milling the raw materials according to the required weight to obtain 1-2 mm powder; Step 2: Pour the powder into a smelting furnace and melt it into liquid at 1330°C; Step three, preheat the mold to a temperature of 420°C, then pour the slurry into the mold, and when the slurry is cooled to 480°C at 1°C / min, send it into the kiln and heat it to 760°C at 2°C / min. After heat preservation for 30 hours, naturally cool it to room temperature, demold it, and obtain a mineral composite material with a thickness of 20 cm.

[0018] Example 2 A mineral composite material suitable for industrial block gauges has a thickness of 25 cm and is composed of the following raw materials in parts by weight: 50 parts of basalt, 28.64 parts of silicon dioxide, 6.48 parts of aluminum oxide, 2.69 parts of calcium oxide, 1.95 parts of magnesium oxide, 4.74 parts of iron oxide, 0.37 parts of titanium oxide, 1.49 parts of potassium oxide, 2.06 parts of sodium oxide, 0.76 parts of barium silicate, 0.42 parts of sodium fluorosilicate, 0.22 parts of arsenic oxide, and 0.18 parts of antimony oxide.

[0019] The preparation method thereof comprises the following steps: Step 1, weighing, crushing, mixing and ball-milling the raw materials according to the required weight to obtain 1-2 mm powder; Step 2: pour the powder into a smelting furnace and melt it into liquid at 1380°C; Step three, preheat the mold to a temperature of 480°C, then pour the slurry into the mold, and when the slurry is cooled to 530°C at 1°C / min, send it into the kiln and heat it to 820°C at 2°C / min. After heat preservation for 20 hours, naturally cool it to room temperature, demold it, and obtain a mineral composite material with a thickness of 25 cm.

[0020] Example 3 A mineral composite material suitable for industrial block gauges and measuring tools, with a thickness of 30 cm, is composed of the following raw materials in parts by weight: 50 parts of basalt, 27.35 parts of silicon dioxide, 7.12 parts of aluminum oxide, 3.06 parts of calcium oxide, 2.17 parts of magnesium oxide, 5.26 parts of iron oxide, 0.32 parts of titanium oxide, 1.21 parts of potassium oxide, 1.94 parts of sodium oxide, 0.82 parts of barium silicate, 0.35 parts of sodium fluorosilicate, 0.16 parts of arsenic oxide, and 0.24 parts of antimony oxide.

[0021] The preparation method thereof comprises the following steps: Step 1, weighing, crushing, mixing and ball-milling the raw materials according to the required weight to obtain 1-2 mm powder; Step 2: pour the powder into a smelting furnace and melt it into liquid at 1350°C; Step three, preheat the mold to 450°C, then pour the slurry into the mold, and when the slurry is cooled to 500°C at 1°C / min, send it into the kiln and heat it to 800°C at 2°C / min. After heat preservation for 24 hours, naturally cool it to room temperature and demold it to obtain a mineral composite material with a thickness of 30 cm.

[0022] Comparative Example 1 In the prior art, a block gauge with a thickness of 30 cm is prepared using alumina as a raw material.

[0023] Comparative Example 2 In the prior art, a block gauge with a thickness of 30 cm is prepared using zirconium oxide as a raw material.

[0024] The mineral composite materials prepared in Examples 1-3 were subjected to corresponding tests, and the specific results are shown in the table below.

[0025] Table 1 Block gauge test data table of various embodiments Test items Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 <![CDATA[Density (g / cm 3 )]]> 2.8 2.95 3.1 3.16 3.20 <![CDATA[Compressive strength (N / mm 2 )]]> 542 553 568 570 576 <![CDATA[Modulus of elasticity (N / mm 2 )]]> 2.96 2.98 3.06 3.08 3.10 Mohs hardness 8.0 8.6 9.0 9.0 9.2 <![CDATA[Coefficient of expansion / 10 -6 ℃]]> 3.1 2.95 2.8 2.76 2.72 Water absorption / % 0.03 0.03 0.01 0.01 0.01 High temperature resistance / ℃ 350 420 500 506 510 Low temperature resistance / ℃ -10 -16 -20 -20 -20 It can be seen from the above table that the mineral composite material prepared in this application has a strength and hardness close to that of alumina or zirconia block gauges, can be suitable for use in block gauges, and the raw materials used are relatively low in cost compared to high-purity alumina or zirconia block gauges.

[0026] The present application limits the raw material composition of the mineral composite material and selects basalt from waste materials as the main raw material to improve the utilization rate of waste resources and greatly reduce costs. The prepared mineral composite material has high hardness and meets the use requirements of block gauges and measuring tools. The preparation method is further limited to subject the molten liquid to a cooling-heating process to eliminate the internal stress of the mineral composite material formed by cooling and prevent shrinkage caused by a rapid drop in temperature, thereby further ensuring that the prepared mineral composite material is free of cracks, has high strength, good stability, is not easy to deform, and can be used for the preparation of block gauges and measuring tools. The powder is directly heated to a molten state to make the interior of the prepared mineral composite material dense and greatly reduce the presence of pores that affect the quality of the finished product of the prepared block gauge and measuring tool and its subsequent use.

[0027] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the application scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A mineral composite material suitable for industrial block gauges, characterized in that: The invention is composed of the following raw materials in parts by weight: 50 parts of basalt, 25.81-28.64 parts of silicon dioxide, 6.48-7.94 parts of aluminum oxide, 2.69-3.31 parts of calcium oxide, 1.95-2.36 parts of magnesium oxide, 4.74-5.85 parts of iron oxide, 0.28-0.37 parts of titanium oxide, 1.08-1.49 parts of potassium oxide, 1.75-2.06 parts of sodium oxide, 0.76-0.95 parts of barium silicate, 0.27-0.42 parts of sodium fluorosilicate, 0.11-0.22 parts of arsenic oxide and 0.18-0.29 parts of antimony oxide.

2. The method for preparing a mineral composite material suitable for industrial block gauges according to claim 1, characterized in that: The following steps are involved: Step 1, weighing, crushing, mixing and ball-milling the raw materials according to the required weight to obtain 1-2 mm powder; Step 2: pour the powder into a smelting furnace to melt it into liquid; Step three, preheat the mold, then pour the slurry into the mold, and when the slurry is cooled to 480-530°C, send it into the kiln, heat it to 760-820°C, keep it warm for 20-30 hours, cool it to room temperature, demould it, and obtain the mineral composite material.

3. The method for preparing a mineral composite material suitable for industrial block gauges according to claim 2, characterized in that: In step 2, the melting temperature of the powder is 1330-1380°C.

4. The method for preparing a mineral composite material suitable for industrial block gauges according to claim 2, characterized in that: In step 3, the preheating temperature of the mold is 420-480°C.

5. The method for preparing a mineral composite material suitable for industrial block gauges according to claim 2, characterized in that: In step 3, the feed liquid is cooled to 480-530°C at 1°C / min.

6. The method for preparing a mineral composite material suitable for industrial block gauges according to claim 2, characterized in that: In step three, after being sent into the kiln, the temperature is raised to 760-820°C at 2°C / min, and after being kept warm for 20-30 hours, it is naturally cooled to room temperature.