Preparation equipment for high-throughput experiment samples

[0022] Example 1

[0023] In this embodiment, austenitic stainless steel is used as the experimental material to calculate the relationship between composition-solidification structure-magnetic field strength. The specific process is as follows: the experimental casting mold is cylindrical, made of alumina, and the center axis is made of concentric circular shafts. 5 concentric circles, 12 crucibles are embedded in the same angle on each circle, the material of the crucible is alumina, such as figure 1 Shown. Divide the designed 12 kinds of austenitic stainless steel materials into 5 parts each, and put 12 kinds of austenitic stainless steel materials into the 12 crucibles on each concentric circle. The crucibles on the central axis of the 5 concentric circles at the same angle are Same raw materials. The temperature of each crucible is measured separately, and the austenitic stainless steel raw material is put into the crucible at the pre-designed position. Start the mechanical pump to evacuate (vacuum is 10-1Pa), open the intake valve and pass in high-purity argon or nitrogen, repeat twice, start the intermediate frequency induction power supply and introduce the intermediate frequency current into the induction coil for induction heating. After the sample is melted, Rotate the rotating table positively and negatively (speed of 0.1rad/s to stir the sample at a small angle (30 degrees), after the sample is evenly melted, keep it for 30 minutes until the temperature of the thermocouple in each crucible is the same, stop the intermediate frequency induction power supply, The double-throw switch turns on the pulse power supply, and starts the pulse power supply (current 1000A, frequency 120Hz, pulse width 1.2ms) for pulse magnetic field treatment (magnetic field strength of 0.5T) during the solidification process of the sample; The programming controller and thermocouple temperature feedback precisely adjust the gas flow of the outlet valve and inlet valve and pulse magnetic field intensity to control the cooling rate at 3K/s until the sample solidifies. Take the sample out of the crucible, mark the position and put it into the grinding and polishing tank Inside. Inlay, polish and corrode the grinding and polishing groove together with 60 samples, observe the macro and micro structure, and calculate the relationship between composition-solidification structure-magnetic field strength.

[0024] Example 2

[0025] In this embodiment, aluminum-copper alloy materials are used to calculate the relationship between composition-solidification structure-cooling strength. The specific process is as follows: the experimental casting mold is cylindrical, made of magnesia bricks, and the inner part is made of five concentric shafts with the central axis as the concentric shaft. Circle, each circle has 12 crucibles embedded in the same angle, the crucible material is quartz, such as figure 1 Shown. Divide the designed 12 kinds of aluminum-copper alloy raw materials into 5 parts each. The 12 crucibles on each concentric circle correspond to the 12 kinds of aluminum-copper alloy raw materials. The 5 concentric circles on the central axis and the crucibles at the same angle are of the same kind. raw material. The temperature of each crucible is measured separately, and the aluminum-copper alloy raw materials are put into the crucible at the pre-designed position. Start the mechanical pump to evacuate (the vacuum degree is 10-1Pa), open the intake valve and pass in high-purity argon or nitrogen, repeat 3 times, start the intermediate frequency induction power supply and introduce the intermediate frequency current into the induction coil for induction heating. After the sample is melted, Rotate the rotating table positively and negatively (speed 0.2rad/s to stir the sample at a small angle (20 degrees), after the sample is evenly melted, keep it for 30 minutes until the temperature of the thermocouple in each crucible is the same, stop the intermediate frequency induction power supply, The double-throw switch turns on the pulse power supply and starts the pulse power supply (current 1500A, frequency 200Hz, pulse width 0.6ms) for pulse magnetic field treatment (magnetic field strength of 1T) during the solidification of the sample; during the solidification of the sample, programmable The controller and thermocouple temperature feedback precisely adjust the gas flow rate of the outlet valve and inlet valve and pulse magnetic field intensity to control the cooling rate at 1K/s until the sample solidifies. Take the sample out of the crucible, mark the position and put it into the grinding and polishing tank .

[0026] Inlay, polish, and corrode the grinding and polishing groove together with 60 samples, observe the macro and micro structure, and calculate the relationship between composition-solidification structure-cooling strength.

[0027] The invention can be used to prepare a large number of different (magnetic field strength, sample material and composition) magnetic field solidified or heat-treated metal samples at the same time. The invention is mainly composed of induction coils and special casting molds. The induction coil is a magnetic field generating system, and the special casting mold is a whole The material processes multiple molds with the same size inside. First, add the samples of different components to be prepared into the special mold and place them inside the coil. Pass high-frequency current through the induction coil to heat the sample. After the sample reaches the required temperature, apply different forms of current for magnetic field treatment. The invention provides a method for rapidly preparing a large number of magnetic field solidification or heat treatment samples, and can be used for the preparation of samples for metal solidification or heat treatment processes.