Special steel strength detection device and production process thereof

Abstract

The invention relates to the technical field of special steel production detection, in particular to a special steel strength detection device and a production process thereof.The special steel strength detection device comprises a base, a limiting device and a detection body, mounting grooves are formed in the left side and the right side of the top of the base, and a buffer groove is formed in the center of the top of the base; a limiting device is arranged in a mounting groove formed in the base, a detection body is arranged in a buffer groove formed in the base, a supporting frame is fixedly connected to the rear side of the top of the base, and a hydraulic telescopic rod is fixedly connected into the supporting frame. Through arrangement of the base, the mounting groove, the supporting frame, the hydraulic telescopic rod, the pushing column, the limiting device, the buffer groove and the detection main body, after the limiting device positions an austenitic stainless steel plate, the austenitic stainless steel plate is directly pushed through the hydraulic telescopic rod, and then the deformation of the austenitic stainless steel plate is calculated; and the strength of the produced austenitic stainless steel is detected.

Description

Technical Field

[0001] The present application relates to the technical field of special steel production and testing, and specifically to a special steel strength testing device and a production process thereof. Background Art

[0002] Special steel, also known as special steel, is the most important type of steel used in most industries of the national economy, such as machinery, automobiles, military industry, chemicals, home appliances, ships, transportation, railways and emerging industries. Special steel is an important symbol to measure whether a country can become a steel power. Austenitic stainless steel refers to stainless steel with austenitic structure at room temperature. Austenitic stainless steel is non-magnetic and has high toughness and plasticity. It is a type of special steel.

[0003] After production, traditional austenitic stainless steel usually places a sample plate of austenitic stainless steel directly on a support frame, and then pushes the austenitic stainless steel plate through a hydraulic telescopic rod to detect the strength of the austenitic stainless steel. In the strength test of traditional austenitic stainless steel, because the austenitic stainless steel plate is directly placed on the support frame, the austenitic stainless steel cannot be positioned during the bending process of the austenitic stainless steel, resulting in a large amount of displacement during the bending process of the austenitic stainless steel, affecting the detection accuracy. Therefore, a special steel strength detection device and a production process thereof are proposed to address the above problems. Summary of the invention

[0004] The purpose of the present application is to provide a special steel strength detection device and its production process, so as to solve the problem that a large amount of displacement occurs during the bending process of austenitic stainless steel and affects the detection progress.

[0005] To achieve the above objectives, this application provides the following technical solutions: A special steel strength detection device and its production process, including a base, a limit device and a detection body, wherein the base has installation grooves on both sides of the left and right sides of the top, a buffer groove is provided at the center of the top of the base, a limit device is provided in the installation groove of the base, a detection body is provided in the buffer groove of the base, a support frame is fixedly connected to the rear side of the top of the base, a hydraulic telescopic rod is fixedly connected to the support frame, and a pushing column is fixedly connected to the bottom end of the hydraulic telescopic rod.

[0006] Preferably, the limiting device comprises a fixed block, a supporting block, a clamping body, a limiting block, a bolt, a positioning body and a lower rotating wheel, the fixed block is arranged in an installation groove provided in the base, one side of the fixed block is fixedly connected to the supporting block, the top of the support block is rotatably connected to the evenly distributed lower rotating wheel, a placement groove is provided on the top of the fixed block, a limiting groove is provided on the bottom inner wall of the placement groove provided by the fixed block, a limiting block is provided in the limiting groove provided by the fixed block, a clamping body is installed on the top of the limiting block, the clamping body is arranged in the placement groove provided in the fixed block, a positioning body is installed on the top of the clamping body, the bolt passes through the clamping body and the limiting block, and the bottom of the bolt is threadedly connected to the fixed block.

[0007] Preferably, the clamping body includes a clamping block, an upper rotating wheel, a limit rod, a slider, a limit spring, a connecting rod and a push plate, the bottom of the clamping block is rotatably connected to the upper rotating wheel which is evenly distributed, sliding grooves are opened on the front and rear sides of the clamping block, the clamping block is fixedly connected to a laterally arranged limit rod through the opened sliding grooves, a slider is provided on the outer side of the limit rod, the side of the slider away from the clamping block is fixedly connected to the connecting rod, the bottom of the connecting rod close to the clamping block is fixedly connected to the push plate, the outer side of the end of the limit rod close to the fixed block is provided with a limit spring, and the top of the clamping block is provided with a positioning body.

[0008] Preferably, the end of the clamping block away from the upper rotating wheel is arranged in the placement groove opened by the fixed block, a limiting block is arranged at the bottom of one end of the limiting groove opened by the fixed block, the clamping block is arranged above the supporting block, and the upper rotating wheel is arranged above the lower rotating wheel.

[0009] Preferably, the positioning body comprises a slide plate, a fixing plate, a sliding rod, a positioning spring, a card plate, a roller, a connecting block and a connecting plate, the front and rear sides of the bottom of the slide plate are fixedly connected to the connecting rod, the slide plate is provided with an empty slot, the slide plate is fixedly connected with a vertically arranged and evenly distributed sliding rod through the empty slot, the empty slot provided on the slide plate is provided with a fixing plate, the sliding rod passes through the fixing plate, the fixing plate is provided with a receiving slot at the top of the sliding rod positioning position, a positioning spring is provided on the outer side of the top end of the sliding rod, the bottom of the positioning spring is arranged in the receiving slot provided in the fixing plate, the bottom of the fixing plate is fixedly connected with a card plate passing through the bottom of the slide plate, the left and right sides of the fixing plate are fixedly connected to the connecting blocks, the connecting block is fixedly connected with the connecting plate on the side away from the fixing plate, the top of the clamping block is provided with evenly distributed positioning slots, and the card plate is arranged in the positioning slot provided in the clamping block.

[0010] Preferably, one end of the clamping plate away from the fixed plate is rotatably connected to a roller, and the bottom of the roller is tightly fitted with the bottom inner wall of the positioning groove formed in the clamping block.

[0011] Preferably, the push plate is arranged between the clamping block and the supporting block, and the front and rear ends of the push plate are fixedly connected with connecting rods, and the horizontal plane of the upper surface of the push plate is in the same horizontal plane as the horizontal plane of the bottom of the upper rotating wheel.

[0012] Preferably, the detection body includes a connecting body, a pressure sensor, a wire, a rubber block, a fixing rod and a fixing ball, the top of the connecting body is fixedly connected to the pressure sensor, the front of the connecting body is fixedly connected to the wire, the bottom of the connecting body is fixedly connected to a longitudinally arranged fixing rod, the bottom of the fixing rod is fixedly connected to fixing balls evenly distributed longitudinally, a rubber block is arranged at the bottom of the connecting body, the fixing rod and the fixing ball are both arranged in the top of the rubber block, the bottom of the rubber block is provided with a deformation groove, and the bottom of the connecting body and the rubber block are both arranged in a buffer groove opened in the base.

[0013] Preferably, the inner walls on both sides of the buffer groove of the base are provided with card slots, the upper sides of the left and right sides of the rubber block are fixedly connected with card balls evenly distributed longitudinally, the side of the card ball away from the rubber block is arranged in the card slot of the base, and a pushing column is arranged directly above the pressure sensor.

[0014] Preferably, the following production steps are included: Step 1: Add different low-grade nickel-chromium pig iron into an electric furnace for blowing, and then obtain stainless steel mother liquor through desiliconization and decarburization. The weight percentages of the added substances are: C: 1%-3%, Si: 0.10%-2%. According to the content requirements of the stainless steel finished product, Cr is added to half of the finished product, and high-carbon ferrochrome is used to adjust the Ni content in the stainless steel mother liquor of the electric furnace to an appropriate content; Step 2: Add the stainless steel mother liquor in step 1 to the AOD furnace, ensure that the temperature of the stainless steel mother liquor before adding to the AOD furnace is greater than 1500 degrees Celsius, then add high carbon ferrochrome, adjust the top gun flow rate to 30-90m3 / min according to the silicon content entering the furnace, and then blow the side gun oxygen, blow silicon to a weight percentage of 0.2% in the early stage, and then blow nitrogen to reduce Cr2O3 in the slag, and then control the basicity of the molten steel at 1.4, and finally slag flow to smelt into crude austenite; Step 3: Add metallurgical lime, high carbon ferrochrome, ferronickel and scrap steel to the crude austenitic stainless steel prepared in step 2 for primary decarburization, using an oxygen-nitrogen volume ratio of 7:1, and a flow rate of: O2: 200 Nm3 / min, an oxygen top gun of 100 Nm3 / min, a side air gun of 100 Nm3 / min, and N2: 30 Nm3 / min. When the decarburization reaches 0.45%, primary decarburized stainless steel is obtained; Step 4: Adjust the nitrogen-oxygen ratio, carry out the second stage decarburization, adjust the carbon content to the level required for the finished product, and finally send it into the LF furnace, where the composition and temperature are fine-tuned to obtain austenitic stainless steel; Step 5: Take some austenitic stainless steel and make it into a stainless steel plate of appropriate thickness. Finally, cut the austenitic stainless steel into appropriate specifications and test the austenitic stainless steel.

[0015] Compared with the prior art, the beneficial effects of this application are: 1. In the present application, by providing a base, a mounting slot, a support frame, a hydraulic telescopic rod, a pushing column, a limiting device, a buffer slot and a detection body, after the limiting device positions the austenitic stainless steel plate, the hydraulic telescopic rod can be used to directly push the austenitic stainless steel plate, and then the deformation of the austenitic stainless steel plate can be calculated to detect the strength of the produced austenitic stainless steel; 2. In the present application, by setting the fixed block, supporting block, clamping block, sliding groove, upper rotating wheel, limiting rod, sliding block, limiting spring, connecting rod, pushing plate, limiting groove, placing groove, limiting block, bolt and lower rotating wheel, the clamping block can be driven to move toward the supporting block by rotating the bolt. At this time, the austenitic stainless steel plate is positioned under the action of the upper rotating wheel and the lower rotating wheel, which is convenient for applying pressure to the austenitic stainless steel plate. At the same time, the limiting spring drives the pushing plate to clamp the austenitic stainless steel plate through the sliding block and the connecting rod, so that the central position of the austenitic stainless steel plate is aligned with the pushing column as much as possible, so that the austenitic stainless steel is more stable when bending. At the same time, when the austenitic stainless steel plate is bent, the austenitic stainless steel plate can drive the upper rotating wheel and the lower rotating wheel to rotate at the same time, reducing the friction of clamping and making the bending process more accurate. In the process of moving the clamping block, the limiting groove and placing groove opened by the fixed block can limit the limiting block and the clamping block, so that the clamping block can move stably and make the clamping more stable. 3. In the present application, by setting the clamping block, positioning groove, slide plate, fixed plate, storage groove, slide rod, positioning spring, card plate, roller, connecting block and connecting plate, the slide plate can be limited by the card block set in the positioning groove of the clamping block, so as to position the connecting block and the push plate, which is convenient for the placement of the austenitic stainless steel plate. Then, the fixed plate is moved upward by the connecting plate and the connecting block, so that the card plate leaves the positioning opened by the clamping block. Then, when the limiting spring pushes the slide plate to move through the slider and the connecting rod, the roller can roll on the surface of the clamping block, so that the movement of the slide plate and the push plate is more stable. After the detection is completed, the slide plate is directly pushed. After the card plate moves to the position of the positioning groove opened by the clamping block, the positioning spring pushes the fixed plate and the card plate to move downward, so that the card plate is quickly inserted into the positioning groove opened by the clamping block, so as to realize the rapid positioning of the slide plate. 4. In the present application, by setting the base, buffer groove, connection body, pressure sensor, wire, rubber block, fixed rod, fixed ball, deformation groove, card ball and card groove, the austenitic stainless steel plate can contact with the pressure sensor when it is bent, and then transmit the data to the external controller under the action of the wire, and the external controller controls the hydraulic telescopic rod to stop extending. At this time, the hydraulic telescopic rod continues to push the austenitic stainless steel plate to deform under the action of inertia. At this time, the austenitic stainless steel plate pushes the connection body to move through the pressure sensor. At this time, the rubber block is deformed through the deformation groove to buffer the connection body and prevent damage to the connection body. When the connection body and the rubber block are installed, the rubber block pushes the card ball set in the card groove opened in the base, so as to support the rubber block and the connection body, so that the position of the connection body is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the structure of the base of this application; Figure 3 This is a schematic diagram of the structure of the limit device of this application; Figure 4 This is a schematic diagram of the bolt installation structure for this application; Figure 5 This is a schematic diagram of the installation structure of the runner in this application; Figure 6 This is a schematic diagram of the structure of the clamping body of this application; Figure 7 A schematic diagram of the installation structure of the positioning subject of this application; Figure 8 For this application Figure 7 A schematic diagram of the structure at A; Fig. 9 This is a schematic diagram of the installation structure of the roller in this application; Fig.10 This is a schematic diagram of the installation structure of the clamping block of this application; Fig.11 For this application Fig.10 Schematic diagram of the structure at B; Fig.12 This is a schematic diagram of the installation structure of the test subject of this application; Fig.13 For this application Fig.12 Schematic diagram of the structure at C; Fig.14 This is a schematic diagram of the installation structure of the fixed ball for this application; Fig.15 This is a schematic diagram of the installation structure of the ball card in this application.

[0017] In the figure: 1, base; 2, mounting groove; 3, support frame; 4, hydraulic telescopic rod; 5, push column; 6, limit device; 61, fixed block; 62, support block; 63, clamping body; 631, clamping block; 632, slide groove; 633, upper rotating wheel; 634, limit rod; 635, slider; 636, limit spring; 637, connecting rod; 638, push plate; 639, positioning groove; 64, limit groove; 65, placement groove; 66, limit block; 67, bolt ; 68, positioning body; 681, slide plate; 682, fixing plate; 683, storage slot; 684, slide bar; 685, positioning spring; 686, card plate; 687, roller; 688, connecting block; 689, connecting plate; 69, lower rotating wheel; 7, buffer slot; 8, detection body; 81, connecting body; 82, pressure sensor; 83, wire; 84, rubber block; 85, fixing rod; 86, fixing ball; 87, deformation slot; 88, card ball; 9, card slot. DETAILED DESCRIPTION

[0018] See also Figure 1-15 , this application provides a technical solution: A special steel strength detection device and its production process, including a base 1, a limit device 6 and a detection body 8, the base 1 has installation grooves 2 on both sides of the left and right sides of the top, a buffer groove 7 is provided at the central position of the top of the base 1, the installation groove 2 provided by the base 1 is provided with a limit device 6, the buffer groove 7 provided by the base 1 is provided with a detection body 8, a support frame 3 is fixedly connected to the rear side of the top of the base 1, a hydraulic telescopic rod 4 is fixedly connected to the support frame 3, and a pushing column 5 is fixedly connected to the bottom end of the hydraulic telescopic rod 4. Through this arrangement, after the austenitic stainless steel plate is positioned by the limit device 6, the austenitic stainless steel plate can be directly pushed by the hydraulic telescopic rod 4, and then the deformation of the austenitic stainless steel plate is calculated to realize the strength detection of the produced austenitic stainless steel.

[0019] like Figure 1-6As shown, the limiting device 6 includes a fixed block 61, a support block 62, a clamping body 63, a limiting block 66, a bolt 67, a positioning body 68 and a lower rotating wheel 69. The fixed block 61 is arranged in the installation groove 2 provided in the base 1, and one side of the fixed block 61 is fixedly connected to the support block 62, and the top of the support block 62 is rotatably connected to the lower rotating wheel 69 evenly distributed. A placement groove 65 is provided on the top of the fixed block 61, and a limiting groove 64 is provided on the bottom inner wall of the placement groove 65 provided in the fixed block 61. A limiting block 66 is provided in the limiting groove 64 provided in the fixed block 61, and a clamping body 63 is installed on the top of the limiting block 66. The clamping body 63 is arranged in the placement groove 65 provided in the fixed block 61, and a positioning body 68 is installed on the top of the clamping body 63. The main body 68 is positioned in the center, and the bolt 67 passes through the clamping main body 63 and the limit block 66. The bottom of the bolt 67 is threadedly connected to the fixed block 61. The clamping main body 63 includes a clamping block 631, an upper rotating wheel 633, a limit rod 634, a slider 635, a limit spring 636, a connecting rod 637 and a push plate 638. The bottom of the clamping block 631 is rotatably connected to the upper rotating wheel 633 that is evenly distributed. Slide grooves 632 are provided on the front and rear sides of the clamping block 631. The clamping block 631 is fixedly connected to a transversely arranged limit rod 634 through the slide grooves 632. A slider 635 is provided on the outer side of the limit rod 634. The side of the slider 635 away from the clamping block 631 is fixedly connected to a connecting rod 637. The connecting rod 637 is close to the clamping block. A push plate 638 is fixedly connected to the bottom of one side of 631, a limiting spring 636 is provided on the outer side of one end of the limiting rod 634 close to the fixed block 61, a positioning body 68 is provided on the top of the clamping block 631, and the end of the clamping block 631 away from the upper rotating wheel 633 is arranged in the placement groove 65 provided in the fixed block 61, and a limiting block 66 is provided at the bottom of one end of the limiting groove 64 provided in the fixed block 61. The clamping block 631 is arranged above the supporting block 62, and the upper rotating wheel 633 is arranged above the lower rotating wheel 69. Through this arrangement, the clamping block 631 can be driven to move toward the supporting block 62 by rotating the bolt 67. At this time, the austenitic stainless steel plate is positioned under the action of the upper rotating wheel 633 and the lower rotating wheel 69, which is convenient for positioning the austenitic stainless steel plate. The stainless steel plate is pressed, and the limit spring 636 drives the push plate 638 to clamp the austenitic stainless steel plate through the slider 635 and the connecting rod 637, so that the central position of the austenitic stainless steel plate is aligned with the push column 5 as much as possible, so that the austenitic stainless steel is more stable when bent. At the same time, when the austenitic stainless steel plate is bent, the austenitic stainless steel plate can drive the upper rotating wheel 633 and the lower rotating wheel 69 to rotate at the same time, reducing the friction of clamping and making the bending process more precise. In the process of moving the clamping block 631, the limit groove 64 and the placement groove 65 opened by the fixed block 61 can limit the limit block 66 and the clamping block 631, so that the clamping block 631 can move stably and make the clamping more stable.

[0020] like Figure 3-11As shown, the positioning body 68 includes a slide plate 681, a fixed plate 682, a slide bar 684, a positioning spring 685, a clamping plate 686, a roller 687, a connecting block 688 and a connecting plate 689. The front and rear sides of the bottom of the slide plate 681 are fixedly connected with connecting rods 637. An empty slot is provided in the slide plate 681. The slide plate 681 is fixedly connected with vertically arranged and evenly distributed slide bars 684 through the opened empty slot. The fixed plate 682 is provided in the empty slot provided in the slide plate 681. The slide bar 684 penetrates the fixed plate 682. The fixed plate 682 is provided with a storage slot 683 at the top of the positioning position of the slide bar 684. The slide bar 684 A positioning spring 685 is arranged on the outer side of the top, and the bottom of the positioning spring 685 is arranged in the receiving groove 683 provided on the fixed plate 682. A card plate 686 that runs through the bottom of the slide plate 681 is fixedly connected to the bottom of the fixed plate 682. Connecting blocks 688 are fixedly connected to the left and right sides of the fixed plate 682. A connecting plate 689 is fixedly connected to the side of the connecting block 688 away from the fixed plate 682. Evenly distributed positioning grooves 639 are arranged on the top of the clamping block 631. The card plate 686 is arranged in the positioning groove 639 provided on the clamping block 631. The end of the card plate 686 away from the fixed plate 682 is rotatably connected to a roller 687. The roller 687 The bottom is tightly fitted with the inner wall of the bottom of the positioning groove 639 opened by the clamping block 631, and the push plate 638 is arranged between the clamping block 631 and the supporting block 62. The front and rear ends of the push plate 638 are fixedly connected with connecting rods 637. The horizontal plane of the upper surface of the push plate 638 is in the same horizontal plane as the horizontal plane of the bottom of the upper rotating wheel 633. Through this arrangement, the sliding plate 681 can be limited by the block set in the positioning groove 639 set by the clamping block 631, so as to position the connecting block 688 and the push plate 638, which is convenient for the placement of the austenitic stainless steel plate, and then the fixed plate 68 is moved upward through the connecting plate 689 and the connecting block 688. 2. Make the card plate 686 leave the positioning opened by the clamping block 631, and then the limit spring 636 pushes the slide plate 681 to move through the slider 635 and the connecting rod 637, and the roller 687 can roll on the surface of the clamping block 631, so that the movement of the slide plate 681 and the push plate 638 is more stable. After the detection is completed, the slide plate 681 is directly pushed. After the card plate 686 moves to the position of the positioning groove 639 opened by the clamping block 631, the positioning spring 685 pushes the fixed plate 682 and the card plate 686 to move downward, so that the card plate 686 is quickly inserted into the positioning groove 639 opened by the clamping block 631, so as to realize the rapid positioning of the slide plate 681.

[0021] like Figure 12-15As shown, the detection body 8 includes a connecting body 81, a pressure sensor 82, a wire 83, a rubber block 84, a fixing rod 85 and a fixing ball 86. The pressure sensor 82 is fixedly connected to the top of the connecting body 81, the wire 83 is fixedly connected to the front of the connecting body 81, the fixing rod 85 arranged longitudinally is fixedly connected to the bottom of the connecting body 81, the fixing rod 85 is fixedly connected to the bottom of the fixing rod 85, and the fixing balls 86 uniformly distributed longitudinally are fixedly connected to the bottom of the fixing rod 85. A rubber block 84 is arranged at the bottom of the connecting body 81. The fixing rod 85 and the fixing balls 86 are both arranged in the top of the rubber block 84. A deformation groove 87 is provided at the bottom of the rubber block 84. The bottom of the connecting body 81 and the rubber block 84 are both arranged in the buffer groove 7 provided in the base 1. The inner walls on both sides of the buffer groove 7 provided in the base 1 are provided with card grooves 9. The upper sides of the left and right sides of the rubber block 84 are fixedly connected with card balls 88 uniformly distributed longitudinally, and the card balls 88 are away from the rubber block 84. One side is arranged in the card slot 9 opened in the base 1, and a pushing column 5 is arranged just above the pressure sensor 82. Through this arrangement, when the austenitic stainless steel plate is bent, it can contact with the pressure sensor 82, and then the data is transmitted to the external controller under the action of the wire 83, and the hydraulic telescopic rod 4 is controlled by the external controller to stop extending. At this time, the hydraulic telescopic rod 4 continues to push the austenitic stainless steel plate to deform under the action of inertia. At this time, the austenitic stainless steel plate pushes the connecting body 81 to move through the pressure sensor 82. At this time, the rubber block 84 is deformed through the deformation groove 87 to buffer the connecting body 81 and prevent the connecting body 81 from being damaged. When the connecting body 81 and the rubber block 84 are installed, the rubber block 84 pushes the card ball 88 set in the card slot 9 opened in the base 1, so as to support the rubber block 84 and the connecting body 81, so that the position of the connecting body 81 is more stable.

[0022] A special steel strength detection device and a production process thereof, comprising the following production steps: Step 1: Add different low-grade nickel-chromium pig iron into an electric furnace for blowing, and then obtain stainless steel mother liquor through desiliconization and decarburization. The weight percentages of the added substances are: C: 1%-3%, Si: 0.10%-2%. According to the content requirements of the stainless steel finished product, Cr is added to half of the finished product, and high-carbon ferrochrome is used to adjust the Ni content in the stainless steel mother liquor of the electric furnace to an appropriate content; Step 2: Add the stainless steel mother liquor in step 1 to the AOD furnace, ensure that the temperature of the stainless steel mother liquor before adding to the AOD furnace is greater than 1500 degrees Celsius, then add high carbon ferrochrome, adjust the top gun flow rate to 30-90m3 / min according to the silicon content entering the furnace, and then blow the side gun oxygen, blow silicon to a weight percentage of 0.2% in the early stage, and then blow nitrogen to reduce Cr2O3 in the slag, and then control the basicity of the molten steel at 1.4, and finally slag flow to smelt into crude austenite; Step 3: Add metallurgical lime, high carbon ferrochrome, ferronickel and scrap steel to the crude austenitic stainless steel prepared in step 2 for primary decarburization, using an oxygen-nitrogen volume ratio of 7:1, and a flow rate of: O2: 200 Nm3 / min, an oxygen top gun of 100 Nm3 / min, a side air gun of 100 Nm3 / min, and N2: 30 Nm3 / min. When the decarburization reaches 0.45%, primary decarburized stainless steel is obtained; Step 4: Adjust the nitrogen-oxygen ratio, carry out the second stage decarburization, adjust the carbon content to the level required for the finished product, and finally send it into the LF furnace, where the composition and temperature are fine-tuned to obtain austenitic stainless steel; Step 5: Take some austenitic stainless steel and make it into a stainless steel plate of appropriate thickness. Finally, cut the austenitic stainless steel into appropriate specifications and test the austenitic stainless steel.

[0023] Working process: When using this special steel strength testing device, first place the austenitic stainless steel plate to be tested on the top of the lower rotating wheel 69 rotatably connected to the support block 62, then rotate the bolt 67, the bottom of the bolt 67 is threadedly connected to the fixed block 61, and the clamping block 631 is pushed downward by the bolt 67. At this time, the clamping block 631 slides in the placement groove 65 opened in the fixed block 61, and at the same time, the clamping block 631 pushes the limit block 66 to slide in the limit groove 64 opened in the fixed block 61, until the bottom of the upper rotating wheel 633 opened at the bottom of the clamping block 631 contacts the austenitic stainless steel plate. After the clamping blocks 631 at both ends have moved, pull the connecting plate 689 upward, and the connecting plate 689 drives the fixed plate 682 through the connecting block 688. The outer side of the sliding rod 684 fixedly connected inside the slide plate 681 moves upward. At this time, the positioning spring 685 is compressed, and the fixed plate 682 drives the card plate 686 to move upward until the card plate 686 leaves the positioning groove 639 opened at the top of the clamping block 631. Then, the slide plate 681 is moved toward the support frame 3 to make the card plate 686 leave the positioning groove 639 opened at the clamping block 631. Then, the slide plate 681 on the left and right sides is slowly released. At this time, the limit spring 636 pushes the slider 635 to slide on the outer side of the limit rod 634. At the same time, the slider 635 drives the slide plate 681 and the push plate 638 to move toward the support frame 3 together through the connecting rod 637. At this time, the roller 687 connected to the bottom of the card plate 686 rolls on the top of the clamping block 631 until the push plate 638 is aligned with the support frame 3. It is necessary to detect the side contact of the austenitic stainless steel plate. At this time, the three-dimensional parameters of the austenitic stainless steel plate are input into the external controller, and then the hydraulic telescopic rod 4 is started through the external controller. The hydraulic telescopic rod 4 pushes the pushing column 5 to move downward, and the austenitic stainless steel plate is pushed by the pushing column. At this time, the austenitic stainless steel plate gradually bends. At this time, the pressure of the hydraulic telescopic rod 4 can be displayed through the external controller until the bottom of the austenitic stainless steel plate contacts the pressure sensor 82. The pressure sensor 82 receives the pressure and transmits the pressure value to the external controller through the connecting body 81 and the wire 83. At this time, the external controller controls the hydraulic telescopic rod 4 to stop extending. Under the action of inertia, the hydraulic telescopic rod 4 will continue to extend downward. At this time, the pressure sensor 82 The rubber block 84 is pushed by the connecting body 81 to deform under the action of the deformation groove 87. At this time, the clamping balls 88 fixedly connected on both sides of the rubber block 84 slide in the clamping groove 9 provided in the base 1 until the hydraulic telescopic rod 4 completely stops extending. Then, the hydraulic telescopic rod 4 is controlled to retract by the external controller. At this time, the strength of the austenitic stainless steel can be calculated by the external controller, and then the bolt 67 is rotated in the opposite direction. Then, the clamping block 631 can be moved upward, and then the bent austenitic stainless steel sheet can be taken out, and the slide plate 681 is pushed. When the slide plate 681 drives the clamping plate 686 to move above the positioning groove 639 provided in the clamping block 631, the positioning spring 685 pushes the clamping plate 686 into the positioning groove 639 provided in the clamping block 631 through the slide plate 681.Realize the positioning of the slide plate 681 and the push plate 638.

[0024] This article uses specific examples to illustrate the principles and implementation methods of this application. The above examples are only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A special steel strength detection device and its production process, comprising a base (1), a limit device (6) and a detection body (8), characterized in that: The base (1) has installation grooves (2) on both left and right sides of the top, a buffer groove (7) is provided at the center of the top of the base (1), a limiting device (6) is provided in the installation groove (2) of the base (1), a detection body (8) is provided in the buffer groove (7) of the base (1), a support frame (3) is fixedly connected to the rear side of the top of the base (1), a hydraulic telescopic rod (4) is fixedly connected to the support frame (3), and a pushing column (5) is fixedly connected to the bottom end of the hydraulic telescopic rod (4); The detection body (8) comprises a connection body (81), a pressure sensor (82), a wire (83), a rubber block (84), a fixing rod (85) and a fixing ball (86); the pressure sensor (82) is fixedly connected to the top of the connection body (81); the wire (83) is fixedly connected to the front of the connection body (81); the fixing rod (85) is fixedly connected to the bottom of the connection body (81); the fixing balls (86) uniformly distributed in the longitudinal direction are fixedly connected to the bottom of the fixing rod (85); the rubber block (84) is arranged at the bottom of the connection body (81); the fixing rod (85) and the fixing balls (86) are both arranged in the top of the rubber block (84); the bottom of the rubber block (84) is provided with a deformation groove (87); the bottom of the connection body (81) and the rubber block (84) are both arranged in a buffer groove (7) provided in the base (1); The inner walls of the buffer groove (7) on the base (1) are provided with clamping grooves (9) on both sides, and the upper sides of the left and right sides of the rubber block (84) are fixedly connected with clamping balls (88) evenly distributed in the longitudinal direction, and the side of the clamping ball (88) away from the rubber block (84) is arranged in the clamping groove (9) on the base (1), and a pushing column (5) is arranged directly above the pressure sensor (82).

2. A special steel strength detection device and its production process according to claim 1, characterized in that: The limiting device (6) comprises a fixing block (61), a supporting block (62), a clamping body (63), a limiting block (66), a bolt (67), a positioning body (68) and a lower rotating wheel (69); the fixing block (61) is arranged in a mounting groove (2) provided in the base (1); one side of the fixing block (61) is fixedly connected to the supporting block (62); the top of the supporting block (62) is rotatably connected to the lower rotating wheels (69) which are evenly distributed; the top of the fixing block (61) is provided with a placement groove (65); the fixing block (61) is provided with a positioning groove (66) and the fixing block (61) is provided with a positioning groove (65) which is arranged on the fixing block (61). A limiting groove (64) is provided on the inner wall of the bottom of the placement groove (65); a limiting block (66) is provided in the limiting groove (64) provided on the fixed block (61); a clamping body (63) is installed on the top of the limiting block (66); the clamping body (63) is arranged in the placement groove (65) provided on the fixed block (61); a positioning body (68) is installed on the top of the clamping body (63); the bolt (67) passes through the clamping body (63) and the limiting block (66); and the bottom of the bolt (67) is threadedly connected to the fixed block (61).

3. A special steel strength detection device and its production process according to claim 2, characterized in that: The clamping body (63) comprises a clamping block (631), an upper rotating wheel (633), a limiting rod (634), a slider (635), a limiting spring (636), a connecting rod (637) and a push plate (638); the bottom of the clamping block (631) is rotatably connected to the upper rotating wheel (633) which is evenly distributed; the clamping block (631) is provided with sliding grooves (632) on both the front and rear sides; the clamping block (631) is fixedly connected to a laterally arranged A limit rod (634) is provided on the outer side of the limit rod (634), a slider (635) is fixedly connected to a connecting rod (637) on the side of the slider (635) away from the clamping block (631), a push plate (638) is fixedly connected to the bottom of the side of the connecting rod (637) close to the clamping block (631), a limit spring (636) is provided on the outer side of one end of the limit rod (634) close to the fixed block (61), and a positioning body (68) is provided on the top of the clamping block (631).

4. A special steel strength detection device and its production process according to claim 3, characterized in that: One end of the clamping block (631) away from the upper rotating wheel (633) is arranged in a placement groove (65) provided in the fixed block (61), and a limiting block (66) is arranged at the bottom of one end of the limiting groove (64) provided in the fixed block (61); the clamping block (631) is arranged above the supporting block (62), and the upper rotating wheel (633) is arranged above the lower rotating wheel (69).

5. A special steel strength detection device and its production process according to claim 3, characterized in that: The positioning body (68) comprises a slide plate (681), a fixed plate (682), a slide bar (684), a positioning spring (685), a clamping plate (686), a roller (687), a connecting block (688) and a connecting plate (689). The front and rear sides of the bottom of the slide plate (681) are fixedly connected to connecting rods (637). An empty slot is provided in the slide plate (681). The slide plate (681) is fixedly connected to vertically arranged and evenly distributed slide bars (684) through the empty slot. The fixed plate (682) is provided in the empty slot of the slide plate (681). The slide bar (684) passes through the fixed plate (682). The fixed plate (682) is provided with a slide bar (684) at the top of the positioning position. A receiving groove (683) is provided, a positioning spring (685) is provided on the outer side of the top end of the slide bar (684), the bottom of the positioning spring (685) is arranged in the receiving groove (683) provided in the fixed plate (682), the bottom of the fixed plate (682) is fixedly connected with a clamping plate (686) which passes through the bottom of the slide plate (681), the left and right sides of the fixed plate (682) are fixedly connected with connecting blocks (688), the side of the connecting block (688) away from the fixed plate (682) is fixedly connected with a connecting plate (689), the top of the clamping block (631) is provided with evenly distributed positioning grooves (639), and the clamping plate (686) is arranged in the positioning groove (639) provided in the clamping block (631).

6. A special steel strength detection device and its production process according to claim 5, characterized in that: One end of the clamping plate (686) away from the fixed plate (682) is rotatably connected to a roller (687), and the bottom of the roller (687) is tightly fitted to the bottom inner wall of the positioning groove (639) provided in the clamping block (631).

7. The special steel strength detection device and production process thereof according to claim 3, characterized in that: The push plate (638) is arranged between the clamping block (631) and the support block (62), and the front and rear ends of the push plate (638) are fixedly connected to connecting rods (637), and the horizontal plane on which the upper surface of the push plate (638) is located is in the same horizontal plane as the horizontal plane on the bottom of the upper rotating wheel (633).

8. A special steel strength detection device and its production process according to any one of claims 1 to 7, characterized in that: The production process includes the following steps: Step 1: Add different low-grade nickel-chromium pig iron into an electric furnace for blowing, and then obtain stainless steel mother liquor through desiliconization and decarburization. The weight percentages of the added substances are: C: 1%-3%, Si: 0.10%-2%. According to the content requirements of the stainless steel finished product, Cr is added to half of the finished product, and high-carbon ferrochrome is used to adjust the Ni content in the stainless steel mother liquor of the electric furnace to an appropriate content; Step 2: Add the stainless steel mother liquor in step 1 to the AOD furnace, ensure that the temperature of the stainless steel mother liquor before adding to the AOD furnace is greater than 1500 degrees Celsius, then add high carbon ferrochrome, adjust the top gun flow rate to 30-90m3 / min according to the silicon content entering the furnace, and then blow the side gun oxygen, blow silicon to a weight percentage of 0.2% in the early stage, and then blow nitrogen to reduce Cr2O3 in the slag, and then control the basicity of the molten steel at 1.4, and finally slag flow to smelt into crude austenite; Step 3: Add metallurgical lime, high carbon ferrochrome, ferronickel and scrap steel to the crude austenitic stainless steel prepared in step 2 for primary decarburization, using an oxygen-nitrogen volume ratio of 7:1, and a flow rate of: O2: 200 Nm3 / min, an oxygen top gun of 100 Nm3 / min, a side air gun of 100 Nm3 / min, and N2: 30 Nm3 / min. When the decarburization reaches 0.45%, primary decarburized stainless steel is obtained; Step 4: Adjust the nitrogen-oxygen ratio, carry out the second stage decarburization, adjust the carbon content to the level required for the finished product, and finally send it into the LF furnace, where the composition and temperature are fine-tuned to obtain austenitic stainless steel; Step 5: Take some austenitic stainless steel and make it into a stainless steel plate of appropriate thickness. Finally, cut the austenitic stainless steel into appropriate specifications and test the austenitic stainless steel.

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