Titanium sponge crushing process quality control device

Abstract

The invention discloses a titanium sponge crushing process quality control device and method.The device comprises a stock bin, a vibrating feeder, a crusher and a vibrating screen and further comprises a discharging speed control device, and the discharging speed control device comprises a stock bin vibration exciter, a weighing belt conveyor and a main control system; the weighing belt conveyor is used for calculating the discharging amount of the vibrating feeder in unit time and conveying the received materials to the crusher; the main control system is connected with the stock bin vibration exciter, the vibration feeder and the weighing belt conveyor, the main control system adjusts the vibration frequency of the vibration feeder and the on-off state of the stock bin vibration exciter according to the difference value between the set blanking amount numerical value and the blanking amount numerical value calculated by the weighing belt conveyor, and the blanking amount in unit time is within the preset range. According to the device, the discharging speed can be precisely controlled within the required material speed range, so that the temperature fluctuation range of materials in the crushing process is controlled, the high-temperature phenomenon is prevented, the situation that titanium sponge is prone to being in contact with air to be oxidized and nitrided due to the too high temperature is avoided, and the titanium sponge product quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of titanium alloy preparation, in particular to a quality control device for a titanium sponge crushing process. Background Art

[0002] When sponge titanium is produced by magnesium thermal reduction, the impurity elements in various parts of the sponge titanium mass produced by the reaction tank are unevenly distributed, resulting in different local quality. In order to ensure the uniform texture of the subsequent manufacturing of titanium alloys and their profiles, the sponge titanium mass needs to be crushed into small particles and stirred evenly, and then melted into ingots in a vacuum consumable furnace for subsequent processing. The quality of the crushed titanium sponge particles is an important factor affecting the manufacture of titanium alloys. Therefore, the apparent quality of the sponge titanium crushed particles should be good and the particle size should be uniform; during crushing, its sponge-like structure should be avoided from being destroyed to prevent oxidation and nitridation. International standards stipulate that the particle size of the sponge titanium crushed particles prepared by magnesium thermal reduction method should be controlled between 0.83 and 12.7 mm.

[0003] The titanium sponge prepared by magnesium thermal reduction method has certain metal strength and good toughness. Due to its unique porous sponge-like structure, its chemical properties are active and it exhibits compressive resistance in mechanical crushing. A large amount of heat is easily generated during the crushing process. When the temperature of titanium sponge reaches a certain level, it is easy to come into contact with air to cause oxidation and nitridation, causing local quality degradation of the crushed titanium sponge particles. After the titanium sponge particles are densely compacted, they are melted into ingots by vacuum consumable furnaces and other equipment for the manufacture of titanium alloys. The addition of oxygen and nitrogen impurity elements to titanium alloys will seriously affect its mechanical and corrosion resistance properties. This will bring great hidden dangers to the subsequent application of alloy titanium plates, titanium pipes and other profiles in the fields of national defense, chemical industry, energy, ocean and medical treatment. Therefore, it is an important task to effectively monitor the temperature changes of titanium sponge during the crushing process.

[0004] At present, most titanium sponge manufacturers basically use manual feeding or automatic feeding through the corresponding vibrating feeder of the crusher during the titanium sponge crushing process, and the control of the feeding speed is limited to manual control. It is greatly affected by the skill level of workers and the stability of the production process is poor, which leads to a huge impact on the quality of titanium sponge, especially key indicators such as oxygen and nitrogen content and packaging density.

[0005] The invention patent of Chinese patent application CN117643956A discloses a crushing production device involving titanium sponge, and in particular, a crushing system for titanium sponge production, which mainly solves the arrangement of equipment facilities before and after the titanium sponge color sorting system, and the three different products obtained by the crushing system are separated. The implementation object of this invention patent is the equipment arrangement of the color sorting process after the titanium sponge crushing, and no detailed description of the quality control system of the titanium sponge crushing process is given.

[0006] Chinese patent application CN220835942U discloses a crushing device for controlling the oxygen content of zirconium sponge and titanium sponge, which relates to the technical field of zirconium sponge and titanium sponge crushing, and in particular to a crushing device for controlling the oxygen content of zirconium sponge and titanium sponge. The invention discloses a crushing device for controlling the oxygen content of zirconium sponge and titanium sponge, which realizes argon filling protection for the zirconium sponge and zirconium sponge from storage to crushing, avoiding the technical problems of oxidation, nitridation, and even fire in the crushing process of zirconium sponge and titanium sponge, and solves a series of problems such as slow crushing efficiency, low equipment life, and splashing of zirconium or titanium blocks in order to avoid high temperature during crushing, thereby improving the crushing efficiency and product quality of zirconium sponge and titanium sponge. However, the patented technology avoids oxidation and nitridation through inert gas protection, does not control the temperature of the crushing process, and the subsequent control is relatively cumbersome and has poor practicality.

[0007] Therefore, developing a quality control device for the titanium sponge crushing process can control the temperature fluctuation range of the material during the crushing process by accurately controlling the feeding speed, prevent high temperature, and avoid the titanium sponge temperature being too high and easily coming into contact with air to cause oxidation and nitridation, causing local quality degradation of the titanium sponge crushed particles. This is of great significance to the development of the titanium alloy field. Summary of the invention

[0008] The purpose of the present invention is to provide a quality control device for the crushing process of sponge titanium, which can control the temperature fluctuation range of the material during the crushing process by accurately controlling the feeding speed, prevent the occurrence of high temperature, and avoid the sponge titanium from being oxidized and nitrided due to excessive temperature and contact with air, causing local quality degradation of the sponge titanium crushed particles.

[0009] In order to achieve the purpose of the above invention, the present invention provides a titanium sponge crushing process quality control device, including a silo, a vibrating feeder, a crusher and a vibrating screen, and also includes a material feeding speed control device, the material feeding speed control device includes a weighing belt conveyor and a main control system; wherein, The weighing belt conveyor is used to calculate the material discharge amount of the vibrating feeder per unit time, and convey the received materials to the crusher; the main control system is connected to the silo vibrator, vibrating feeder and weighing belt conveyor respectively, and the main control system adjusts the vibration frequency of the vibrating feeder and the switch of the silo vibrator according to the difference between the set material discharge amount value and the material discharge amount value calculated by the weighing belt conveyor, so as to achieve the material discharge amount per unit time within the preset range.

[0010] The quality control device for the sponge titanium crushing process of the present invention loads the sponge titanium slices into the silo, and the silo discharges the material to the vibrating feeder, and the material is transported to the weighing belt conveyor through the vibrating feeder. The weighing belt conveyor calculates the material discharge amount per unit time after weighing, that is, the material discharge speed, and transports the sponge titanium slices to the crusher. Preferably, the weighing upper limit of the weighing belt conveyor is 1.5-2 times the set material discharge amount value, and the accuracy is 2-10%. With the above setting, the material discharge speed can be better controlled within a narrower range, and the material discharge speed can be controlled to achieve the control of the crushing temperature of the material, so as to avoid the oxidation and nitridation of the sponge titanium slices due to excessive temperature during the crushing process. The sponge titanium slices in the silo that meet the feed size requirements of the crusher are discharged to the weighing belt conveyor through the bottom outlet of the silo. The exciter is set outside the silo wall, and the exciter is used to promote the discharge when the discharge at the bottom outlet of the silo is not smooth. The whole discharge process can be more balanced, and the discharge speed and material temperature can be better controlled to avoid blockage and high temperature.

[0011] According to the titanium sponge crushing process quality control device described in the present invention, preferably, the weighing upper limit of the weighing belt conveyor is 1.5-2 times the set discharge amount value, and the accuracy is 2-10%.

[0012] According to the titanium sponge crushing process quality control device described in the present invention, preferably, a blade temperature control device is also provided, and the blade temperature control device includes an infrared temperature measuring device, a crusher blade cooling device and a temperature control system, and the temperature control system is respectively connected to the infrared temperature measuring device and the frequency conversion control system of the blade cooling device.

[0013] Normally, in the absence of a cooling device or when the cooling intensity of the cooling device is insufficient, that is, when the cooling effect is unstable, the crusher temperature will continue to rise to a certain temperature during the crushing of titanium sponge, which may lead to oxidation and nitridation of titanium sponge particles during the crushing process, resulting in a decrease in the quality of titanium sponge. Therefore, the crusher tooth cooling device has a higher crusher tooth cooling function. At the same time, the device can have a frequency conversion function to achieve stable control of the crusher tooth temperature and a linkage control function with an infrared temperature measuring device; the infrared temperature measuring device is mainly used to measure the temperature of the titanium sponge crusher tooth, and is linked with the crusher tooth cooling device, that is, when the infrared temperature measuring device measures that the tooth temperature is higher than the set temperature value, the crusher tooth cooling device increases the cooling intensity to reduce the crusher tooth temperature.

[0014] There are mainly thermocouple method, infrared radiation detection method and calorimetric measurement method for temperature measurement, among which thermocouple method and infrared radiation detection method are the main measurement methods. The thermocouple method is based on the thermoelectric effect, and uses the thermocouple to directly contact the target to measure the temperature, which can reflect its temperature value. Its measurement methods can be divided into natural and embedded types. The infrared radiation detection method often uses an infrared thermal imager to scan the surface of the object to be measured, and forms a two-dimensional distribution image of its temperature after analysis. The infrared thermal imager has a low signal-to-noise ratio, and the chips formed during cutting can easily affect its temperature measurement, but it has the advantages of good sensitivity and rapid measurement, especially the non-contact method is more convenient for temperature measurement, and has good practicality for sponge titanium shear crushing. In the present invention, preferably, the infrared temperature measuring device can be an infrared thermal imager.

[0015] According to the titanium sponge crushing process quality control device described in the present invention, preferably, the temperature control system is connected to the main control system.

[0016] In the present invention, the main control system adjusts the material feeding speed by controlling the frequency of the vibrating feeder, controls the material feeding speed within a narrower range, and is linked with the weighing belt conveyor to effectively control the material feeding speed. The main control system is connected to the temperature control system, so that the infrared temperature measuring point of the crusher tooth temperature is linked to control the crusher tooth temperature within a narrower range when the cooling intensity is insufficient or unstable.

[0017] According to the titanium sponge crushing process quality control device described in the present invention, preferably, the main control system adjusts the frequency of the cooling device according to the difference between the set temperature range and the temperature measured by the infrared temperature measuring device to achieve the control of the tooth temperature within the preset temperature range.

[0018] According to the titanium sponge crushing process quality control device described in the present invention, preferably, the blade cooler is a blower.

[0019] According to the titanium sponge crushing process quality control device of the present invention, preferably, a video monitoring device is also provided, the video monitoring device includes a monitor and a video control system, the monitor is used to monitor the blockage of the vibrating screen surface, and the monitor is connected to the video monitoring system. When the screen surface is seriously blocked, the main control system stops the vibrating feeder in front of the crusher and reminds to clean the vibrating screen surface.

[0020] In the present invention, the monitor transmits the video image to the video monitoring system. When the video monitoring system finds that the vibration screen surface is blocked to a certain extent, it notifies the monitoring personnel to clean the vibration screen surface through the reminder unit to ensure the screening efficiency of the vibration screen, avoid secondary crushing of qualified particle size materials, and effectively reduce the packaging density of sponge titanium finished products.

[0021] According to the titanium sponge crushing process quality control device described in the present invention, preferably, the set feed rate value is 1.5-4t / h.

[0022] According to the titanium sponge crushing process quality control device described in the present invention, preferably, the blade cooling device is a blower or an axial flow fan, the wind temperature is less than 25°C, the air volume is 9000-12000m 3 / h.

[0023] According to the titanium sponge crushing process quality control device described in the present invention, preferably, the set temperature range is less than 90°C.

[0024] The beneficial effects of the present invention are: The present invention provides a quality control device for the titanium sponge crushing process, which can control the temperature fluctuation range of the material during the crushing process by accurately controlling the material feeding speed, prevent high temperature phenomena, and avoid the titanium sponge temperature being too high and easily coming into contact with air to cause oxidation and nitridation, causing local quality degradation of the titanium sponge crushed particles.

[0025] A more optimal technical solution of the present invention is further provided with a blade temperature control device, including an infrared temperature measuring device, a crusher blade cooling device and a temperature control system, wherein the temperature control system is respectively connected to the infrared temperature measuring device and the frequency conversion control system of the blade cooling device. Through the blade temperature control device, the blade temperature can be adjusted according to the temperature of the crushed particles, and the blade temperature can be controlled within a more accurate range to prevent excessive temperature fluctuations and high temperature from causing oxidation and nitridation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0027] Figure 1 The present invention is a schematic diagram of the process flow of a titanium sponge crushing process quality control device. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0029] like Figure 1As shown, a titanium sponge crushing process quality control device of the present invention comprises a silo, a vibrating feeder, a weighing belt conveyor, a crusher and a vibrating screen, and also comprises a material discharge speed control device, wherein the material discharge speed control device comprises a weighing belt conveyor and a main control system; wherein, The titanium sponge slices are loaded into the silo, and the silo discharges the material to the vibrating feeder through the discharge port at the bottom, and is transported to the weighing belt conveyor through the vibrating feeder. The weighing belt conveyor calculates the discharge amount per unit time after weighing, that is, the discharge speed, accurately obtains the actual discharge speed, and transports the titanium sponge slices to the crusher; a vibrator is provided on the outer wall of the silo, which is used to promote discharge through the vibration of the vibrator when the discharge at the bottom outlet of the silo is not smooth, so as to make the whole discharge process smoother and more balanced; the main control system is respectively connected to the vibrating feeder, the weighing belt conveyor and the vibrator. The main control system adjusts the vibration frequency of the vibrating feeder and the switch of the silo vibrator according to the difference between the set discharge amount value and the discharge amount value calculated by the weighing belt conveyor, and controls the actual discharge amount within the preset range to achieve precise control; A blade tooth temperature control device is also provided, which includes an infrared temperature measuring device, a blower and a temperature control system. The temperature control system is respectively connected to the infrared temperature measuring device and the frequency conversion control system of the blower; the temperature control system is connected to the main control system; the main control system adjusts the frequency of the blower according to the difference between the set temperature range and the temperature measured by the infrared temperature measuring device, so as to control the blade tooth temperature within the preset temperature range; A video monitoring device is also provided, which includes a monitor and a video control system. The monitor is used to monitor the blockage of the vibrating screen surface, and the monitor is connected to the video monitoring system.

[0030] Implementation Method 1 Titanium sponge crushing process quality control device used in Example 1: The implementation object is the three-stage crushing and screening process of the crushing and screening line; Before the device of the present invention is adopted, the material feeding speed fluctuates in the range of 2.0t / h to 4.0t / h, with an average of 3.7t / h; after the device of the present invention is adopted, the material feeding speed is set to 3.5t / h, and the actual material feeding speed measured by the weighing belt conveyor ranges from 3.41t / h to 3.62t / h, with an average of 3.50t / h; Before the device of the present invention is used, the maximum temperature of the three-stage crusher teeth is detected to be 90°C. After the device of the present invention is used, the crusher teeth cooling device adopts a cold air blower with a wind temperature of 21°C and a wind volume of 9800m 3 / h, and after running for 1h, the temperature of the blade teeth was detected to be in the range of 70~74℃.

[0031] Implementation Method 2 Titanium sponge crushing process quality control device used in Example 1: The implementation object is the three-stage crushing and screening process of the crushing and screening line; Before the device of the present invention is used, the material feeding speed fluctuates in the range of 1.4t / h to 2.3t / h, with an average of 1.85t / h; after the device of the present invention is used, the material feeding speed is set to 1.7t / h, and the actual material feeding speed measured by the weighing belt conveyor ranges from 1.67t / h to 1.74t / h, with an average of 1.71t / h; Before the device of the present invention is used, the maximum temperature of the three-stage crusher teeth is detected to be 100°C. After the device of the present invention is used, the crusher teeth cooling device adopts axial flow fan blowing, the wind temperature is 21°C, the air volume is 9800m 3 / h, and after running for 1h, the temperature of the blade teeth was detected to be in the range of 63~67℃.

[0032] In the above two embodiments, the crushing operation is performed without the use of the device used before the method of the present invention, that is, the material feeding speed control device and the blade temperature control device. It can be seen from the above embodiments 1 and 2 that the material feeding speed control device and the blade temperature control device of the present invention are used to control the material feeding speed and the crushing temperature within a very precise range, which can effectively prevent the high temperature phenomenon of crushing, avoid the oxidation and nitridation phenomenon of sponge titanium due to excessively high crushing temperature and contact with air, and ensure the quality of sponge titanium.

[0033] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A quality control device for the crushing process of titanium sponge, comprising a silo, a vibrating feeder, a crusher and a vibrating screen, characterized in that: It also includes a material unloading speed control device, which includes a weighing belt conveyor, a main control system and an exciter, and the exciter is arranged on the outer wall of the silo; wherein, The weighing belt conveyor is used to calculate the material discharge amount of the vibrating feeder per unit time and transport the received material to the crusher; the main control system is respectively connected to the silo vibrator, the vibrating feeder and the weighing belt conveyor. The main control system adjusts the vibration frequency of the vibrating feeder and the switch of the silo vibrator according to the difference between the set material discharge amount value and the material discharge amount value calculated by the weighing belt conveyor, so as to achieve the material discharge amount per unit time within a preset range.

2. A titanium sponge crushing process quality control device according to claim 1, characterized in that: The upper weighing limit of the weighing belt conveyor is 1.5-2 times of the set material discharge amount, and the accuracy is 2-10%.

3. The titanium sponge crushing process quality control device according to claim 1 is characterized in that: A cutter tooth temperature control device is also provided, which includes an infrared temperature measuring device, a crusher cutter tooth cooling device and a temperature control system, and the temperature control system is respectively connected to the infrared temperature measuring device and the frequency conversion control system of the cutter tooth cooling device.

4. A titanium sponge crushing process quality control device according to claim 3, characterized in that: The temperature control system is connected to the main control system.

5. A titanium sponge crushing process quality control device according to claim 5, characterized in that: The main control system adjusts the frequency of the cooling device according to the difference between the set temperature range and the temperature measured by the infrared temperature measuring device, so as to control the temperature of the blade teeth within the preset temperature range.

6. A titanium sponge crushing process quality control device according to claim 3, characterized in that: The knife tooth cooler is an air cooler or an axial flow fan.

7. The titanium sponge crushing process quality control device according to claim 1 is characterized in that: A video monitoring device is also provided, which includes a monitor and a video control system. The monitor is used to monitor the blockage of the vibrating screen surface, and the monitor is connected to the video monitoring system.

8. The titanium sponge crushing process quality control device according to claim 1, characterized in that: The set feed rate is 1.5-4t / h.

9. A titanium sponge crushing process quality control device according to any one of claims 3 to 6, characterized in that: The blade cooling device is a blower or an axial flow fan, the wind temperature is less than 25°C, and the air volume is 9000-12000m3 / h.

10. A titanium sponge crushing process quality control device according to claim 9, characterized in that: The set temperature range is less than 90°C.

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