CN111996339B - High-flux spray quenching simulation test device - Google Patents
High-flux spray quenching simulation test device Download PDFInfo
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- CN111996339B CN111996339B CN202010674443.4A CN202010674443A CN111996339B CN 111996339 B CN111996339 B CN 111996339B CN 202010674443 A CN202010674443 A CN 202010674443A CN 111996339 B CN111996339 B CN 111996339B
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Abstract
The invention discloses a high-flux spray quenching simulation test device, which belongs to the field of metal material processing and material quenching performance characterization, and comprises a main body system, a rotating system and a water circulating system; the device has the advantages that the influence of different spray quenching process parameters on the hardenability and the hardenability of the metal material is represented at high flux, basic data are provided for the heat treatment process of the metal material, the heat treatment numerical simulation result is verified, the material composition and the optimal quenching process are rapidly screened, the material research and development period is shortened, and the development cost is reduced; the device can simultaneously carry out quenching tests on a plurality of samples, greatly improves the test efficiency, is provided with a temperature data acquisition and processing system, can reflect the temperature change condition of the samples in real time, can adjust the liquid spraying parameters by controlling the PLC through a computer, and selects different quenching media to research different influence factors influencing the quenching tests.
Description
Technical Field
The invention belongs to the field of metal material processing and material quenching performance characterization, and particularly relates to a high-throughput spray quenching simulation test device.
Background
The general goal of genetic engineering of materials is to double the speed of design, development, manufacture and use of advanced materials. Under the current situation that the research and development of new materials cannot follow the pace of product updating, a low-cost and high-efficiency research and development mode is urgently needed, and the material genetic engineering provides a collaborative research and development mode integrating high-throughput test representation, high-throughput calculation and material basic data/data mining. The material genetic engineering changes the traditional material research and development mode dominated by an empirical trial-and-error method, and greatly improves the research and development capability and efficiency of new materials and new technologies by combining a high-throughput test under rational guidance.
For metal materials, the conventional test mode is sequential test, that is, only a single sample can be tested at a time. The core of high throughput characterization is parallel testing, i.e., multiple samples can be tested at once. Through the development of many years, domestic great progress is made in the fields of high-throughput preparation, high-throughput test characterization, high-throughput calculation and the like. The high-throughput test representation not only can efficiently obtain the data of the material and reduce the test cost, but also can provide basic data for high-throughput numerical calculation and verify and optimize a numerical calculation model, thereby realizing the improvement and promotion of the process.
The heat treatment is an important part in the processing of the steel materials, and can improve the mechanical property of the steel materials, eliminate the residual stress and improve the cutting processability of the metal. The heat treatment process can strengthen steel materials, fully excavate material performance potential, reduce structure weight, obviously improve mechanical product quality and greatly prolong the service life of mechanical parts. Quenching, an important process for establishing a heat treatment process, has been widely focused on the quenching properties of a metal material, including hardenability and hardenability. There are many factors that affect the quenching properties of metallic materials, including alloy composition, grain size, and stress state. The properties can be explored by adjusting the liquid spraying mode of the quenching test, including the spraying and quenching angle, the water spraying pressure, the diameter of the water spraying hole and the like. The traditional quenching test can only quench a single sample, has low test efficiency and can not meet the requirements of actual conditions. In addition, in the production process of metal parts, the internal stress of the workpiece is too large due to severe cooling, and cracks are easy to appear. And the intermittent quenching is to cool the part after the heating process is finished by water, then stop cooling for a short time, cool the part by water again, repeat the cooling for several times, and cool the part to room temperature in the water. The intermittent quenching can reduce the deformation and the defects of the workpiece as much as possible on the premise of ensuring the hardening of the part. The invention provides a high-throughput spray quenching simulation test device and a high-throughput spray quenching simulation test method, by which quenching tests of samples with different components, different heating processes, different heat preservation times and the same size can be completed in batches at one time under different quenching conditions, and corresponding tissue structures, microhardness, temperature and time data of the samples are obtained; the device can also be used for carrying out intermittent quenching tests, and the influence of the influence factors such as quenching interval time, quenching interval times and the like on the workpiece can be researched. The method can provide a large amount of basic data for material quenching simulation, can also verify the material quenching simulation, improves the optimal sample screening and the optimal process efficiency, and further greatly reduces the time and capital cost in material research and development.
Patent CN1394970A discloses a quenching device and a hardenability measuring method for medium and high hardenability steel end, by which a wide cooling speed range can be obtained within a limited sample length, and the relation between the end quenching distance and the cooling speed and the hardness is established, thereby determining the hardenability of the medium and high hardenability steel. But the device can only test one sample at a time, and the efficiency is low; in addition, the device is not provided with a temperature data acquisition and processing system, and cannot reflect the temperature change of the sample during quenching in real time; in addition, the device cannot be used for researching the influence of a liquid spraying mode on the sample in the quenching process.
Disclosure of Invention
Aiming at the existing technical problems, the invention provides a high-flux spray quenching simulation test device which can test a plurality of groups of samples at one time, can explore how a spray quenching mode affects the quenching test result, can coat a heat-carrying galvanic couple on the samples and record the relation between the temperature of a certain point of the samples and the time through a temperature data acquisition control system; the device can simulate industrial production working conditions, provide corresponding data for optimizing the quenching process, screen optimal spray quenching test samples and spray quenching process parameters, and measure the hardenability and hardenability of materials.
The invention solves the technical problems through the following technical scheme:
a high-flux spray quenching simulation test device comprises a main body system, a rotating system and a water circulating system;
the main body system comprises a gland 1, a hydraulic rod 2, a gland bracket 3, a spray quenching tank 4 and supporting legs 7;
the rotating system comprises a servo motor bracket II8, a rotating shaft I11, a rotating shaft II12, a servo motor I13, a tray 14 and more than one sample holder 15;
the water circulation system comprises a water tank 17, a water inlet 18, a return pipe 19, a booster water pump 21, a water pipe and more than one water spraying module;
the pressure cover 1 is arranged at the upper edge of the spray quenching tank 4, the pressure cover 1 is connected with the hydraulic rod 2, the hydraulic rod 2 is connected with the pressure cover bracket 3, the pressure cover bracket 3 is arranged at the side surface of the spray quenching tank 4, 4 supporting feet 7 are arranged at the bottom of the spray quenching tank 4, the servo motor bracket II8 is positioned at the bottom of the spray quenching tank 4, the servo motor I13 is arranged on the servo motor bracket II8, the output end of the servo motor I13 is connected with a rotating shaft II12, the rotating shaft II12 is connected with a rotating shaft I11, the rotating shaft I11 is positioned inside the spray quenching tank 4, the circle center of the rotating shaft I11 coincides with the center of the spray quenching tank 4, the rotating shaft I11 penetrates through the center of the tray 14, the tray 14 is fixedly connected with the rotating shaft I11, the rotating shaft I11 drives the tray 14 to rotate, the tray 14 is positioned inside the spray quenching tank 4, more than one strip-shaped hole is arranged on the tray 14, the sample seat 15 is arranged on the strip-shaped hole, and the sample seat 15 is provided with a plurality of sample holes 16 for placing samples;
the middle part of the outer side surface of the spray quenching tank 4 is provided with more than one water spraying module, the water spraying module comprises a spray pipe bracket 5, a pneumatic membrane regulating valve 26, a flow meter 27, a pressure gauge 28, a spray pipe 29 and a nozzle 36, one end of the spray pipe 29 is positioned in the spray quenching tank 4, the side surface of the spray pipe is provided with a plurality of nozzles 36, and the nozzles 36 are opposite to samples on the sample seat 15; the other end of the spray pipe 29 penetrates through the spray quenching tank 4 and is arranged on the spray pipe bracket 5, the spray pipe bracket 5 is arranged on the outer wall of the spray quenching tank 4, the spray pipe 29 is connected with the water tank 17 through a water pipe, a pressure gauge 28, a flow meter 27, a pneumatic membrane regulating valve 26 and a booster water pump 21 are sequentially arranged on the water pipe, the bottom of the spray quenching tank 4 is connected with the water tank 17 through a return pipe 19, and a water inlet 18 is arranged on the water tank 17; the water inlet 18 is used for feeding a cooling medium.
The device also comprises a control system, wherein the control system comprises a computer 37, a PLC 38 and a plurality of data lines 39; the computer 37 is connected with the PLC 38 through a data line 39, and the servo motor I13, the pneumatic membrane regulating valve 26, the flow meter 27 and the pressure gauge 28 are connected with the PLC 38 through leads; pneumatic diaphragm regulating valve 26 may be used to regulate the pressure and flow of the cooling medium, flow meter 27 may measure the flow of the cooling medium, and pressure gauge 28 may detect the pressure of the cooling medium.
The spray pipe bracket 5 comprises a spray pipe fixing block 31, a connecting rod 32, two sliding blocks 33 and three cross beams 34; the side of the spray quenching pool 4 is provided with a strip-shaped through hole through which a spray pipe penetrates and moves, the spray pipe 29 penetrates through the strip-shaped through hole and then penetrates through a spray pipe fixing block 31 and then is connected with the water tank 17 through water pipes 22, the number of the cross beams 34 is three, the cross beams are respectively an upper cross beam, a middle cross beam and a lower cross beam, two sliding blocks 33 are connected to two ends of the three cross beams 34, the two sliding blocks are respectively arranged on two sliding rods, the sliding rods are fixed on the outer wall of the spray quenching pool 4 and are connected through connecting rods 32, and the spray pipe fixing block 31 is fixedly arranged on the upper cross beam.
The device also comprises a Z-shaped crank 35, a servo motor bracket 6 and a servo motor II 30; one end of a Z-shaped crank 35 is positioned between the middle cross beam and the lower cross beam, the other end of the Z-shaped crank 35 is connected with the output end of a servo motor II30, a servo motor II30 is arranged on a servo motor bracket 6, and the servo motor bracket 6 is fixed on the outer wall of the spray quenching pool 4; the model of servo motor II30 is MHMF042L1U2M, and servo motor II30 drives Z shape crank 35 rotatory, and two sliders 33 of nozzle holder 5 are driven to slide along the slide bar when Z shape crank 35 is rotatory, and servo motor II30 is connected with PLC controller 38 through the wire.
15 both ends of sample seat are equipped with the screw hole, and the downthehole heavy platform that is equipped with of tray 14 upper bar, and heavy platform both ends are equipped with the screw hole that sinks, and the screw hole on sample seat 15 and the heavy platform aligns, fixes the bar downthehole in tray 14 through the bolt with sample seat 15.
The device still includes infrared distance meter support 40, infrared distance meter 41, and on infrared distance meter 41 set up infrared distance meter support 40, infrared distance meter support 40 set up the outer wall of the 4 outer walls of quenching ponds of spouting in the spray tube 29 below, infrared distance meter 41's working face was just to spray tube 29, and infrared distance meter 41 is connected with PLC controller 38.
The device also comprises a rotating shaft sleeve 9, wherein the rotating shaft sleeve 9 is arranged outside the rotating shaft I11, the rotating shaft I11 rotates to not drive the rotating shaft sleeve 9 to rotate, and is positioned between the tray 14 and the bottom surface of the spray quenching tank 4, and the inner wall of the side surface of the spray quenching tank 4 is connected with the rotating shaft sleeve 9 by more than three support ribs 10 for supporting the rotating shaft sleeve 9.
The type of the servo motor I13 is MDMH102L1G6M, the tray 14 can be driven to rotate clockwise, anticlockwise or rotate in a reciprocating mode, the rotating speed is adjustable in a stepless mode, the sample seat 15 is located on the tray 14 in the spray quenching tank 4, and the tray 14 rotates to drive the sample to rotate.
The water tank 17 of the present invention can contain various cooling media, such as water, quenching oil or other quenching media, and the selected quenching media can enter the water tank 10 through the water inlet 11 and can be recycled.
The spray pipe 29 of the invention is provided with a plurality of nozzles 36 which are distributed along the radius direction, and the circle centers of each nozzle 36 and the corresponding sample hole are positioned on the same circle, so as to ensure the cooling effect of the water flow on the sample.
When the gland 1 is closed, the upper part of the spray quenching tank 4 can be completely covered to form a closed space, so that the phenomenon that a cooling medium is splashed out and a sample flies out due to the over-high rotating speed or other unexpected conditions during a test is prevented, and the safety of the device is improved.
The gland bracket 3 is connected with the gland 1 through the hydraulic rod 2 to play a supporting role, and meanwhile, when the gland 1 is lifted to the highest point, the hydraulic rod 2 can keep the gland 1 in an opening state.
The water spraying modules are independent from each other, the PLC 38 can independently set test parameters, and the influence of different spraying and quenching strengths on the sample under the same heat treatment condition can be measured at one time.
The invention can coat heat-carrying couple on each sample, and record the temperature change curve of the specific part in the spray quenching test process through the temperature collecting and processing system arranged in the computer.
According to the invention, samples with the same size and different components can be placed into the sample holes through different heating processes according to requirements, and spray quenching simulation tests are carried out according to test parameters such as preselected cooling media, preset water spray intensity, the distance from the nozzle 36 to the bottom end of the sample, intermittent frequency and the like.
The application method of the high-flux spray quenching simulation test device comprises the following steps:
selecting a quenching medium, adding a proper amount of the quenching medium into the water tank 17 through the water inlet 18, switching on a power supply, starting the computer 37, setting the motion direction and the rotation speed of the sample rotating device, the flow rate of the cooling medium, the spray quenching time and the like according to the test scheme, starting the test device, rapidly putting the heated sample into the sample hole, performing the spray quenching test, and detecting and representing the sample after the spray quenching test is finished.
The device can simultaneously carry out quenching tests on a plurality of samples, greatly improves the test efficiency, is provided with a temperature data acquisition and processing system, can reflect the temperature change condition of the samples in real time, can adjust the liquid spraying parameters by controlling the PLC through a computer, and selects different quenching media to research different influence factors influencing the quenching tests.
The method can complete the quenching test of a plurality of groups of samples at most once according to the needs, explore the influence of different liquid spraying modes on the hardenability and the hardenability of the samples, measure the hardenability and the hardenability of the samples made of different materials, and simulate the production conditions in the actual production link according to the needs so as to optimize the production process.
The invention applies a heat-carrying couple on the surface of the sample, can record the change curve of the temperature of the specific part of the sample along with the time by combining a temperature acquisition and processing system in a computer, and can be used for rapidly screening the optimal sample and quenching process parameters by combining the obtained data of the tissue and the hardness. And a proper spray quenching process can be selected according to the critical cooling rate of the material.
Drawings
FIG. 1 is a side view of a high throughput spray quenching simulation test apparatus of example 1;
FIG. 2 is a sectional view of the high throughput spray quenching simulation test apparatus in example 1;
FIG. 3 is a top view of the high throughput spray quenching simulation test apparatus of example 1;
FIG. 4 is an internal cross-sectional view of the high throughput spray quenching simulation test apparatus of example 1;
FIG. 5 is a schematic structural diagram of a nozzle support of the high-throughput spray quenching simulation apparatus according to example 2;
FIG. 6 is a front view of a nozzle support of the high-throughput spray quenching simulation device in the embodiment 3;
FIG. 7 is a side view of a nozzle holder of the high throughput spray quenching simulation apparatus according to example 3;
in the figure, 1-gland, 2-hydraulic rod, 3-gland bracket, 4-spray quenching tank, 5-spray pipe bracket, 6-servo motor bracket I, 7-supporting foot, 8-servo motor bracket II, 9-rotating shaft sleeve, 10-supporting rib, 11-rotating shaft I, 12-rotating shaft II, 13-servo motor I, 14-tray, 15-sample seat, 16-sample hole, 17-water tank, 18-water inlet, 19-return pipe, 20-water pipe I, 21-booster water pump, 22-water pipe II, 23-water pipe III, 24-water pipe IV, 25-water pipe V, 26-pneumatic film regulating valve, 27-flowmeter, 28-pressure gauge, 29-spray pipe, 30-servo motor II, 31-a nozzle fixing block, 32-a connecting rod, 33-a sliding block, 34-a cross beam, 35-a Z-shaped crank, 36-a nozzle, 37-a computer, 38-a PLC (programmable logic controller), 39-a lead, 40-an infrared distance meter bracket and 41-an infrared distance meter.
Detailed Description
The invention will be further described with reference to the drawings and the embodiments without limiting the scope of the invention thereto.
Example 1
A high-flux spray quenching simulation test device is shown in figures 1, 2, 3 and 4 and comprises a main body system, a rotating system, a water circulation system and a control system;
the main body system comprises a gland 1, a hydraulic rod 2, a gland bracket 3, a spray quenching tank 4 and supporting legs 7;
the rotating system comprises a servo motor bracket II8, a rotating shaft sleeve 9, a rotating shaft I11, a rotating shaft II12, a servo motor I13, a tray 14 and four sample seats 15, wherein each sample seat is provided with four sample holes;
the water circulation system comprises a water tank 17, a water inlet 18, a return pipe 19, a water pipe I20, a booster water pump 21, a water pipe II22, a water pipe III23, a water pipe IV24, a water pipe V25 and four water spraying modules;
the control system comprises a computer 37, a PLC 38 and a data line 39;
the gland 1 is arranged at the upper edge of the spray quenching tank 4, the gland 1 can completely cover the interior of the spray quenching tank 4, the gland 1 is connected with the hydraulic rod 2, the hydraulic rod 2 is connected with the gland support 3, the gland support 3 is of an L structure, one end of the L structure is connected with the hydraulic rod 2, the other end 3 of the L structure is fixedly arranged at the side surface of the spray quenching tank 4, 4 supporting legs 7 are arranged at the bottom of the spray quenching tank 4 and used for supporting the spray quenching tank 4, the servo motor support II8 is of a hollow sleeve structure, one end of the sleeve is welded at the bottom of the spray quenching tank 4, the other end of the sleeve is connected with the servo motor I13 through bolts, the output end of the servo motor I13 is arranged in the sleeve and connected with the rotating shaft II12, the other end of the rotating shaft II12 is connected with the rotating shaft I11, the rotating shaft I11 penetrates through the bottom of the spray quenching tank 4 and is positioned in the spray quenching tank 4 and coincides with the center of the spray quenching tank 4, the rotating shaft I11 penetrates through the center of the tray 14, and the tray 14 is fixedly connected with the rotating shaft I11, the rotating shaft I11 drives the tray 14 to rotate, the tray 14 is positioned inside the spray quenching tank 4, the inner diameter of the tray is slightly smaller than that of the spray quenching tank 4, the rotating shaft sleeve 9 is arranged outside the rotating shaft I11, the rotating shaft I11 cannot drive the rotating shaft sleeve 9 to rotate, the rotating shaft sleeve 9 is positioned between the tray 14 and the bottom surface of the spray quenching tank 4, and the inner wall of the side surface of the spray quenching tank 4 is connected with the rotating shaft sleeve 9 through 8 support ribs 10 for supporting the rotating shaft sleeve 9; the tray 14 is provided with four strip-shaped holes, a sample seat 15 is placed in each strip-shaped hole, two ends of each sample seat 15 are respectively provided with a threaded hole, two ends in each strip-shaped hole on the tray 14 are respectively provided with a sinking platform, each sinking platform is provided with a sinking threaded hole, the threaded holes of the sample seats 15 and the tray 14 are aligned, and the sample seats 15 are fixed on the sinking platforms in the strip-shaped holes in the tray 14 through bolt connection; the sample holder 15 is provided with four sample holes 16 for placing samples;
the middle part of the outer side surface of the spray quenching tank 4 is provided with four water spraying modules, each water spraying module comprises a spray pipe bracket 5, a pneumatic membrane regulating valve 26, a flow meter 27, a pressure gauge 28, a spray pipe 29 and a nozzle 36, one end of each spray pipe 29 is positioned in the spray quenching tank 4, the side surface of the spray pipe is provided with a plurality of nozzles 36, the lower part of the sample holder 15 is right opposite to the end of each spray pipe 29, the spray pipe 29 is provided with four nozzles 36, and each nozzle 36 is right opposite to one sample below the sample holder 15; the other end of the spray pipe 29 penetrates through the spray quenching tank 4 and is arranged on the spray pipe support 5, the spray pipe support 5 is arranged on the outer wall of the spray quenching tank 4, the spray pipes 29 of the four spray modules are respectively connected with a water pipe I20 through a water pipe II22, a water pipe III23, a water pipe IV24 and a water pipe V25, the water pipe I20 is connected with the water tank 17, the water pipe II22, the water pipe III23, the water pipe IV24 and the water pipe V25 are respectively and sequentially provided with a pressure gauge 28, a flow meter 27 and a pneumatic membrane regulating valve 26 and then connected with the water pipe I20, the water pipe I20 is provided with a booster water pump 21 and then connected with the water tank 17, the bottom of the spray quenching tank 4 is connected with the water tank 17 through a return pipe 19, and the water tank 17 is provided with a water inlet 18; the water inlet 18 is used for adding cooling medium;
the computer 37 is connected with the PLC 38 through a data line 39, and the servo motor I13, the pneumatic membrane regulating valve 26, the flow meter 27 and the pressure gauge 28 are connected with the PLC 38 through leads; the pneumatic diaphragm regulating valve 26 can be used for regulating the pressure and flow rate of the cooling medium, the flow meter 27 can measure the flow rate of the cooling medium, and the pressure gauge 28 can detect the pressure of the cooling medium; the servo motor I13 is of the type MDMH102L1G6M, and the PLC controller 38 is of the Siemens S1500 series.
After the quenching medium is determined, a proper amount of quenching medium is connected with a power supply through the water tank 17 of the water inlet 18, the computer 37 is started to set the motion direction and the motion speed of the sample rotating device, the flow rate of the cooling medium and the spray quenching time according to the test scheme, the test device is started, the heated sample is rapidly placed into the sample hole for spray quenching test, and after the spray quenching test is finished, the sample is detected and represented.
Example 2
A high flux spray quenching simulation test device is shown in figure 5, wherein a spray pipe bracket 5 comprises a spray pipe fixing block 31, a connecting rod 32, two sliding blocks 33 and three cross beams 34; the side surface of the spray quenching pool 4 is provided with a strip-shaped through hole through which the spray pipe 29 passes and moves up and down, the spray pipe 29 passes through a strip-shaped through hole and then passes through a spray pipe fixing block 31 and then is connected with a water tank 17 through a water pipe 22, the number of the cross beams 34 is three, the cross beams are respectively an upper cross beam, a middle cross beam and a lower cross beam, two ends of the three cross beams 34 are connected with two sliding blocks 33, the two sliding blocks are respectively arranged on two sliding rods which are similar to a handle structure, two ends of each sliding rod are fixed on the outer wall of the spray quenching pool 4, the upper cross beam and the middle cross beam are connected through a connecting rod 32, the spray pipe fixing block 31 is fixedly arranged on the upper cross beam, the sliding blocks 33 can be jacked by a jack after sliding to a proper position, the spray quenching device further comprises an infrared distance measuring device support 40 and an infrared distance measuring device 41, the infrared distance measuring device 41 is arranged on the infrared distance measuring device support 40, the infrared distance measuring device support 40 is arranged on the outer wall of the spray pipe 4 below the spray pipe 29, the working surface of the infrared distance measuring device 41 is opposite to the spray pipe 29, the infrared distance meter 41 is connected to the PLC controller 38, the infrared distance meter 41 monitors the position of the nozzle 29, and the PLC controller 38 sets the limit position of the nozzle 29 to prevent the nozzle 36 from touching the sample, and other components and connection relationships are the same as those in embodiment 1.
After the quenching medium is determined, a proper amount of quenching medium is connected with a power supply through the water tank 17 of the water inlet 18, the computer 37 is started to set the motion direction and the motion speed of the sample rotating device, the flow rate of the cooling medium and the spray quenching time according to the test scheme, the test device is started, the heated sample is rapidly placed into the sample hole for spray quenching test, and after the spray quenching test is finished, the sample is detected and represented.
Example 3
A high flux spray quenching simulation test device is shown in figures 6 and 7, and further comprises a Z-shaped crank 35, a servo motor bracket 6 and a servo motor II 30; one end of a Z-shaped crank 35 is positioned between the middle cross beam and the lower cross beam, the other end of the Z-shaped crank 35 is connected with the output end of a servo motor II30, a servo motor II30 is arranged on a servo motor bracket 6, and the servo motor bracket 6 is fixed on the outer wall of the spray quenching pool 4; the servo motor II30 is connected with the PLC 38 through a lead, the model of the servo motor II30 is MHMF042L1U2M, the servo motor II30 drives the Z-shaped crank 35 to rotate, the Z-shaped crank 35 drives the two sliding blocks 33 of the nozzle support 5 to slide along the sliding rod when rotating, and other components and connection relations are the same as those of the embodiment 2.
After the quenching medium is determined, a proper amount of quenching medium is connected with a power supply through the water tank 17 of the water inlet 18, the computer 37 is started to set the motion direction and the motion speed of the sample rotating device, the flow rate of the cooling medium and the spray quenching time according to the test scheme, the test device is started, the heated sample is rapidly placed into the sample hole for spray quenching test, and after the spray quenching test is finished, the sample is detected and represented.
Example 4
In this embodiment, a668 steel is taken as an example to illustrate a high-throughput spray quenching simulation method, and the apparatus of embodiment 1 is adopted, and the specific steps are as follows:
(1) preparing 16A 668 steel samples with the size of 25mm in diameter and the height of 100mm according to national standard GB/T225-2006, dividing the 16 samples into four groups of A, B, C and D, wherein the four groups of the samples are respectively numbered as 1, 2, 3, 4, A, B, C and D and are respectively heated to 800 ℃, 830 ℃, 860 ℃ and 890 ℃; the heat preservation time of the samples 1, 2, 3 and 4 in each group is respectively set to be 20min, 30min, 40min and 50 min;
(2) selecting water as a quenching medium used in a spray quenching test, and adding a proper amount of water into the water tank 17 from the water inlet 18;
(3) the power supply is switched on, the servo motor I13 is started by combining the computer 37 with the PLC 38, the servo motor I13 drives the rotating shaft II12 to rotate, the rotating shaft II12 drives the rotating shaft I11 to rotate, the rotating shaft I11 drives the tray 14 to rotate clockwise, the speed is 15 degrees/s, the heights from the nozzle 36 on the spray pipe 29 to the bottom end of the sample are 65mm, the computer 37 combines the PLC 38 to start the booster water pump 21 to spray water, the pressure gauge 28 and the flow meter 27 display the pressure and the flow of the sprayed water, the pneumatic membrane regulating valve 26 is regulated to regulate the sizes of the pressure gauge 28 and the flow meter 27, and the spray quenching is carried out for 25min after the set flow is regulated;
(4) after the samples are heated, a thermocouple is quickly adhered to each sample and connected with the PLC 38, the samples are placed in the sample holes 16 and then the test is started, a temperature acquisition processing system in the computer 37 draws a curve of the temperature and the time of the monitored position according to temperature data acquired by the thermocouples, and after the water spraying is finished, the samples are naturally cooled to the room temperature and the device is closed.
Example 5
In this embodiment, the high-throughput spray quenching simulation method is described by taking SA508-3 steel, 42CrMo steel, S34MnV steel, and 5CrNiMoV steel as examples, and the apparatus in embodiment 2 is used to describe the high-throughput spray quenching simulation method, which specifically includes the following steps:
(1) preparing 4 samples of SA508-3 steel, 42CrMo steel, S34MnV steel and 5CrNiMoV steel with the size of 25mm in diameter and 100mm in height according to national standard GB/T225-2006, wherein the 4 samples are prepared with the size of 25mm in diameter and 100mm in height, the total number of the samples is 16, the 16 samples are divided into four groups, each group comprises one or four samples of the SA508-3 steel, the 42CrMo steel, the S34MnV steel and the 5CrNiMoV steel, the four groups of samples are heated to 800 ℃, 830 ℃, 860 ℃ and 890 ℃, the heat preservation time is 30min, and all the samples are guaranteed to finish the heat preservation process at the same time;
(2) selecting water as a quenching medium used in a spray quenching test, and adding a proper amount of water into the water tank 17 from the water inlet 18;
(3) the power is switched on, the servo motor I13 is started by the combination of the computer 37 and the PLC 38, the servo motor I13 drives the rotating shaft II12 to rotate, the rotating shaft II12 drives the rotating shaft I11 to rotate, the rotating shaft I11 drives the tray 14 to rotate clockwise at the speed of 15 degrees/s, the sliding block 33 is manually operated (the equipment can be lifted by a jack and the like), when the infrared distance measuring instrument 41 measures that the spray pipe 29 reaches a specific position, a position signal is fed back to the PLC 38, after the computer 37 checks data, the artificial jack props up the lower cross beam and fixes the sliding block 33 by a clamp, the height from the spray nozzle 36 on the spray pipe 29 to the bottom end of a sample is 65mm, the computer 37 is combined with the PLC 38 to start the booster pump 21 to spray water, the pressure gauge 28 and the flow meter 27 display the pressure and the flow of the sprayed water, the pneumatic membrane regulating valve 26 is used for regulating the sizes of the pressure gauge 28 and the flow meter 27 to a set flow, spray quenching for 10 min;
(4) after the samples are heated, a thermocouple is quickly adhered to each sample and connected with the PLC 38, the samples are placed in the sample holes 16 and then the test is started, a temperature acquisition processing system in the computer 37 draws a curve of the temperature and the time of the monitored position according to temperature data acquired by the thermocouples, and after the water spraying is finished, the samples are naturally cooled to the room temperature and the device is closed.
Example 6
In this embodiment, the high-throughput spray quenching simulation method is described by taking SA508-3 steel, 42CrMo steel, S34MnV steel, and 5CrNiMoV steel as examples, and the apparatus in embodiment 3 is used to describe the high-throughput spray quenching simulation method, which specifically includes the following steps:
(1) 4 samples of each of SA508-3 steel, 42CrMo steel, S34MnV steel and 5CrNiMoV steel with the size of 25mm and the height of 100mm are prepared according to national standard GB/T225-2006, 16 samples are counted, the 16 samples are divided into four groups, each group comprises one or four samples of the SA508-3 steel, 42CrMo steel, S34MnV steel and 5CrNiMoV steel, the four groups of samples are heated to 800 ℃, 830 ℃, 860 ℃ and 890 ℃, the heat preservation time is 30min, and the heat preservation process of all the samples is finished at the same time;
(2) selecting water as a quenching medium used in a quenching test, and adding a proper amount of water into the water tank 17 from the water inlet 18;
(3) switching on a power supply, combining a computer 37 with a PLC (programmable logic controller) 38 to start a servo motor I13, driving a rotating shaft II12 to rotate by a servo motor I13, driving a rotating shaft I11 to rotate by a rotating shaft II12, driving a tray 14 to rotate clockwise by a rotating shaft I11 at a speed of 15 DEG/s, simultaneously starting a servo motor II30, driving a Z-shaped crank 35 to rotate by a servo motor II30, driving a sliding block 33 of a spray pipe bracket 5 to slide along a sliding rod by the Z-shaped crank 35, feeding a position signal back to the PLC 38 after the spray pipe 29 reaches a specific position determined by an infrared distance meter 41, closing the servo motor II30 after the computer 37 checks data, supporting the whole spray pipe bracket 5 by the Z-shaped crank 35, wherein the height from a nozzle 36 on the spray pipe 29 to the bottom end of a sample is 65mm, combining the computer 37 with the PLC 38 to start a booster pump 21 to spray water, displaying the pressure and the flow of the pressure gauge 28 and the flow meter 27, and adjusting a pneumatic film adjusting valve 26 to adjust the pressure gauge 28, 2, The size of the flowmeter 27 is adjusted to a set flow rate, and then the spraying quenching is carried out for 10 min;
(4) after the samples are heated, a thermocouple is quickly adhered to each sample and connected with the PLC 38, the samples are placed in the sample holes 16 and then the test is started, a temperature acquisition processing system in the computer 37 draws a curve of the temperature and the time of the monitored position according to temperature data acquired by the thermocouples, and after the water spraying is finished, the samples are naturally cooled to the room temperature and the device is closed.
The number of the water spraying modules can be adjusted as required, and different groups of experiments can be carried out.
Claims (7)
1. A high-flux spray quenching simulation test device is characterized by comprising a main body system, a rotating system and a water circulating system;
the main body system comprises a gland (1), a hydraulic rod (2), a gland bracket (3), a spray quenching tank (4) and supporting legs (7);
the rotating system comprises a servo motor bracket
(8) The device comprises a rotating shaft I (11), a rotating shaft II (12), a servo motor I (13), a tray (14) and more than one sample seat (15);
the water circulation system comprises a water tank (17), a water inlet (18), a return pipe (19), a booster water pump (21), a water pipe and more than one water spraying module;
the gland (1) is arranged at the upper edge of the spray quenching tank (4), the gland (1) is connected with the hydraulic rod (2), and the hydraulic rod (2) and the gland bracket (C)3) The gland support (3) is arranged on the side surface of the spray quenching tank (4), 4 supporting legs (7) are arranged at the bottom of the spray quenching tank (4), and the servo motor support
(8) Is positioned at the bottom of the spray quenching tank (4) and is provided with a servo motor
(13) Arranged on a servo motor bracket
(8) Upper, servo motor
(13) Output end and rotating shaft
(12) Connecting, rotating shaft
(12) And a rotating shaft
(11) Connecting, rotating shaft
(11) Is positioned inside the spray quenching tank (4), the circle center of the spray quenching tank coincides with the center of the spray quenching tank (4), and a rotating shaft
(11) Passes through the center of the tray (14), and the tray (14) is fixed on the rotating shaft
(11) On the upper part, the tray (14) is positioned inside the spray quenching pool (4), and more than one strip-shaped hole is arranged on the tray (14)The sample seat (15) is arranged on the strip-shaped hole, and a plurality of sample holes (16) are formed in the sample seat (15);
more than one water spraying module is arranged in the middle of the outer side face of the spray quenching pool (4), each water spraying module comprises a spray pipe bracket (5), a pneumatic membrane regulating valve (26), a flow meter (27), a pressure gauge (28), a spray pipe (29) and a nozzle (36), one end of each spray pipe (29) is located in the spray quenching pool (4), a plurality of nozzles (36) are arranged on the side face of the corresponding spray pipe, and each nozzle (36) is opposite to a sample on the sample seat (15); the other end of the spray pipe (29) penetrates through the spray quenching tank (4) and is arranged on the spray pipe support (5), the spray pipe support (5) is arranged on the outer wall of the spray quenching tank (4), the spray pipe (29) is connected with the water tank (17) through a water pipe, a pressure gauge (28), a flow meter (27), a pneumatic membrane regulating valve (26) and a booster water pump (21) are sequentially arranged on the water pipe, the bottom of the spray quenching tank (4) is connected with the water tank (17) through a return pipe (19), and a water inlet (18) is formed in the water tank (17);
also comprises a rotating shaft sleeve (9), the rotating shaft sleeve (9) is arranged on the rotating shaft
(11) And the outer surface is positioned between the tray (14) and the bottom surface of the spray quenching tank (4), and the inner wall of the side surface of the spray quenching tank (4) is connected with more than three support ribs (10) through the rotating shaft sleeve (9).
2. The device of claim 1, further comprising a control system comprising a computer (37), a PLC controller (38), a data line (39); the computer (37) is connected with the PLC (38) through a data line (39), and the servo motor
(13) The pneumatic membrane regulating valve (26), the flow meter (27) and the pressure gauge (28) are connected with a PLC (programmable logic controller) controller (38).
3. The device according to claim 2, characterized in that the nozzle support (5) comprises a nozzle fixing block (31), a connecting rod (32), two sliding blocks (33) and a cross beam (34); spout and quench pond (4) side and be equipped with the bar through-hole, spout fixed block (31) are passed again behind the bar through-hole in spout (29), crossbeam (34) have three, be entablature, middle cross beam, bottom end rail respectively, two slider (33) are connected at three crossbeam (34) both ends, two sliders set up respectively on two litter, the litter is fixed to be set up and is spouting and quench pond (4) outer wall, connect with connecting rod (32) between entablature, the middle cross beam, spout fixed block (31) are fixed to be set up on the entablature.
4. Device according to claim 3, characterized in that it further comprises a Z-crank (35), a servomotor support
(6) Servo motor
(30) (ii) a One end of a Z-shaped crank (35) is positioned between the middle cross beam and the lower cross beam, and the other end of the Z-shaped crank (35) is connected with a servo motor
(30) Is connected with the output end of the servo motor
(30) Arranged on a servo motor bracket
(6) Upper and lower servo motor support
(6) Is fixedly arranged on the outer wall of the spray quenching tank (4).
5. The apparatus of claim 4, wherein the servo motor is a servo motor
(30) Is connected with a PLC (38).
6. The device according to claim 1, characterized in that the sample holder (15) is provided with threaded holes at both ends, a sunken platform is arranged in the strip-shaped hole in the tray (14), sunken threaded holes are provided at both ends of the sunken platform, the threaded holes in the sample holder (15) and the sunken platform are aligned, and the sample holder (15) is fixed in the strip-shaped hole in the tray (14) through a bolt.
7. The device according to claim 3 or 4, further comprising an infrared distance meter support (40) and an infrared distance meter (41), wherein the infrared distance meter (41) is arranged on the infrared distance meter support (40), the infrared distance meter support (40) is arranged on the outer wall of the spray quenching tank (4) below the spray pipe (29), the working surface of the infrared distance meter (41) is opposite to the spray pipe (29), and the infrared distance meter (41) is connected with the PLC (38).
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| CN202010674443.4A CN111996339B (en) | 2020-07-14 | 2020-07-14 | High-flux spray quenching simulation test device |
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|---|---|---|---|
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