A method for casting a molten material using a fast furnace

Abstract

This invention provides a method for melting and casting a casting rod using a fast-melting furnace, comprising: providing a fast-melting furnace and a lifting platform, the lifting platform being positioned directly below the fast-melting furnace; obtaining the height of the heating coil of the fast-melting furnace, the reference plane height of the lifting platform, and the maximum upward stroke of the lifting platform, and positioning the lifting platform at an initial height; placing a mold sleeve containing the casting rod on the support surface of the lifting platform; placing a height gauge on the reference plane to the side of the lifting platform; detecting the height of the casting rod relative to the reference plane; obtaining the upward stroke of the lifting platform based on the height of the heating coil of the fast-melting furnace, the reference plane height of the lifting platform, and the height of the casting rod relative to the reference plane, while simultaneously removing the height gauge; controlling the lifting platform to rise so that the height of the casting rod is the same as that of the heating coil of the fast-melting furnace. This invention solves the problems of complex steps and inaccurate measurements in existing methods for positioning and measuring casting rods.

Description

Technical Field

[0001] This invention relates to the field of turbine manufacturing technology, and in particular to a method for heating a casting rod in a fast-melting furnace to form a casting shape. Background Technology

[0002] During turbine manufacturing, a pre-formed mold is used to heat and melt an investment casting rod. The molten investment casting rod is then shaped into the desired form within the mold. (Reference) Figure 4 The mold sleeve is shaped as follows: The mold sleeve is placed on a lifting platform. It includes a bottom forming cavity and an upper tube communicating with the forming cavity. The molded material is placed in the upper tube. The lifting platform rises, and the upper tube of the mold sleeve rises into the electromagnetic induction coil in the fast-melting furnace. The electromagnetic induction coil is fitted around the outer circumference of the upper tube of the mold sleeve. Subsequently, the electromagnetic induction coil in the fast-melting furnace heats and melts the molded material, heating the molded material in the upper tube. The molten liquid enters the forming cavity at the bottom of the mold sleeve and cools to form the final shape.

[0003] The mold sleeves used in the production process vary in size and height. After the investment casting rod is placed in the upper cavity of the mold sleeve, as... Figure 4 It is necessary to use a height gauge to measure the height of the mold rod in the mold sleeve in order to measure and locate its spatial position. This will give us the relative position of the mold rod with respect to the electromagnetic induction coil in the vertical direction, which will facilitate the subsequent control of the mold sleeve's rising height. This will allow us to accurately locate and obtain data on the heating position and heating length of the mold rod in the upper cavity of the mold sleeve by the electromagnetic induction coil.

[0004] Inaccurate measurement and positioning of the casting rod results in a vertical deviation between the electromagnetic induction coil and the casting rod in the mold sleeve, leading to poor heating and melting effect of the casting rod by the electromagnetic induction coil. Existing methods for positioning and measuring the casting rod are complex and inaccurate. Summary of the Invention

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a method for heating the investment casting rod in a fast melting furnace to form it into shape, thereby solving the problems of complex steps and inaccurate measurement of the positioning of the investment casting rod in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention provides a method for heating a casting rod in a fast-melting furnace to form a casting shape, comprising: S1. Provide a fast-melting furnace and a lifting platform, placing the lifting platform directly below the furnace opening. Obtain the heating coil height H1 of the fast-melting furnace, the reference plane height H2 of the lifting platform, and the maximum lifting stroke L of the lifting platform. max and position the lifting platform at its initial height; S2. Level the support surface of the lifting platform; S3. Provide a mold sleeve with a melt casting rod and place the mold sleeve on the support surface of the lifting platform; S4. Provide a height gauge and place the height gauge on the reference plane on the side of the lifting platform; S5. Detect the height H3 of the investment casting rod relative to the reference surface using a height gauge; S6. Based on the heating coil height H1 of the fast melting furnace, the reference plane height H2 of the lifting platform, and the height H3 of the casting rod relative to the reference plane, obtain the lifting stroke L of the lifting platform = H1 - H2 + H3, and L ≤ L max At the same time, the height gauge was removed; S7. Control the lifting platform to rise, with a rising stroke L, so that the height of the investment casting bar is the same as that of the heating coil of the fast melting furnace; S8. Control the start of the heating coil of the fast melting furnace to melt the casting rod and pour it into the mold to form the shape.

[0007] Step S2 specifically includes: S2.1 The lifting platform is equipped with three sets of adjustment mechanisms. Rotate the fastening nuts of the three sets of adjustment mechanisms to move the fastening nuts away from the adjustment bolts, so that the adjustment bolts can rotate and move up and down freely in the first threaded hole. S2.2 Set measurement points A, B, and C on the upper surface of the upper platform. Measurement points A, B, and C are located directly above the three sets of adjustment mechanisms. S2.3 Measure the height difference between measuring point A and measuring point B, and adjust the adjusting bolts of the adjusting mechanism below measuring point A and / or measuring point B to make the height difference between measuring point A and measuring point B zero; S2.4 Measure the height difference between measuring point B and measuring point C. Adjust the adjusting bolt of the adjusting mechanism below measuring point C to make the height difference between measuring point C and measuring point B zero.

[0008] It also includes step S2.5, verification, measuring the height difference between measurement point C and measurement point A, and the height difference between measurement point C and measurement point A is zero.

[0009] In step S2.3, adjust the adjusting bolt of the adjusting mechanism below measuring point A. Rotate the adjusting bolt upwards to push measuring point A upwards, increasing the height of measuring point A. Rotate the adjusting bolt in the opposite direction to move it downwards, decreasing the height of measuring point A.

[0010] In step S2.3, after the height difference between measuring point A and measuring point B is adjusted to zero, the fastening nut of the adjustment mechanism below measuring point A and measuring point B is rotated to abut against the adjusting bolt, and the adjusting bolt is fixed in the first threaded hole.

[0011] In step S2.4, after the height difference between measuring point C and measuring point B is adjusted to zero, the fastening nut of the adjustment mechanism below measuring point C is rotated to abut against the adjusting bolt, and the adjusting bolt is fixed in the first threaded hole.

[0012] When adjusting the horizontal height of measuring points A, B, and C on the upper surface of the platform, the three guide posts on the lower surface of the platform slide up and down in the through holes of the three C-shaped connecting blocks for guidance and engagement.

[0013] The lifting platform includes a base, an upper platform, and three sets of adjustment mechanisms. The three sets of adjustment mechanisms are arranged in an equilateral triangle on the base. The upper platform is adjustablely mounted on the three sets of adjustment mechanisms. The upper surface of the upper platform serves as a support surface, and the lower surface of the upper platform is provided with three guide posts. Each adjustment mechanism includes a C-shaped connecting block, an adjusting bolt, and a fastening nut. The lower end of the C-shaped connecting block is fixed to the base, and the upper end of the C-shaped connecting block has a through hole, a first threaded hole, and a second threaded hole. Each of the three guide posts passes through the three through holes of the C-shaped connecting block. The guide posts slide up and down within the through holes of the C-shaped connecting blocks for guidance. The adjusting bolt is threaded into the first threaded hole and extends upward to abut against the upper platform. The second threaded hole intersects with the first threaded hole. The fastening nut is threaded into the second threaded hole and abuts against the adjusting bolt.

[0014] The outer ring of the base is provided with a horizontal reference surface, and the middle of the base is provided with an upwardly protruding circular boss, the outer periphery of which is a positioning arc surface.

[0015] The height gauge includes a gauge base and a measuring mechanism. The measuring mechanism is mounted on the gauge base, which is an arc-shaped block. The gauge base is placed against the reference surface of the base, and the inner arc surface of the gauge base is aligned with the positioning arc surface of the base for positioning.

[0016] The measuring mechanism includes a main scale, a vernier scale, and measuring jaws. The main scale is vertically fixed on the scale base, and the vernier scale is slidably mounted on the main scale. The vernier scale slides along the length of the main scale. The measuring jaws are Z-shaped, with one end fixed to the vernier scale and the other end being the measuring section. The lower surface of the measuring section of the measuring jaws is the measuring surface.

[0017] The present invention provides a method for heating a casting rod in a fast-melting furnace to form a casting shape. For different mold sleeves and casting rods, it is necessary to measure the height of the casting rod on each mold sleeve placed on the upper platform. After calculating the height data, the required upward stroke for each rise is obtained, so that after each rise, the casting rod is located at the target height in the heating coil of the fast-melting furnace, so that the heating coil can achieve a better heating and melting effect on the casting rod. The positioning and measurement method of the casting rod of the present invention is simple and quick, and the measurement and calculation data is accurate. The upper platform is calibrated by setting up three sets of adjustment mechanisms below it. Three measurement points are selected on the upper surface of the upper platform corresponding to the three sets of adjustment mechanisms. Two measurement points are randomly selected, and the two sets of calibration modules simultaneously measure and adjust the two measurement points. Then, one of the two calibrated measurement points is selected and measured with the remaining measurement point to complete the adjustment and calibration. This makes the three measurement points on the same plane, and the upper surface of the upper platform is calibrated. The calibration operation is simple and the calibration process is quick, which improves the calibration efficiency of the lifting platform. Attached Figure Description

[0018] Figure 1 This is a front view of the lifting platform of the present invention.

[0019] Figure 2 This is a top view of the lifting platform of the present invention.

[0020] Figure 3 This is a top view of the lifting platform of the present invention after the support surface has been removed.

[0021] Figure 4 This is a schematic diagram of the height gauge of the present invention for measuring the investment casting rod.

[0022] Figure 5 for Figure 4 Top view.

[0023] Figure 6 This is a front view of the height gauge of the present invention.

[0024] Figure 7 This is a top view of the height gauge of the present invention.

[0025] Figure 8 This is a schematic diagram of the calibration support surface for the calibration tool of the present invention.

[0026] Figure 9 This is a top view of the base, three adjustment mechanisms, and calibration tools of the present invention.

[0027] Figure 10 This is a schematic diagram of the calibration module of the present invention.

[0028] In the picture: 100- Lifting Platform; 110 - Base; 120 - Upper platform; 130 - Adjustment mechanism; 111 - Reference plane; 112 - Positioning arc surface; 121 - Support surface; 122 - Guide column; 131-C-shaped connecting block; 132-Adjusting bolt; 133-Fasting nut; 134-Through hole; 135-First threaded hole; 136-Second threaded hole; 200-Height Inspection Gear; 210 - Base; 220 - Measuring mechanism; 211-Main scale; 212-Vernier scale; 213-Measuring jaws; 214-Fasting screw; 300-mold sleeve; 400-Investment casting rod; 500-Calibration Tool; 510 - Calibration base; 520 - Dual guide rail mechanism; 530 - Calibration module; 521-Guide rod; 522-Slider; 523-Mounting plate; 524-First connecting plate; 525-Screw; 526-Second connecting plate; 527-Roller; 531-Pressure sensor; 532-Sleeve; 533-Modular rod; 534-Spring. Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Example This invention provides a lifting platform 100, including a base 110, an upper platform 120, and three sets of adjustment mechanisms 130, combined with... Figure 1-4 Three sets of adjustment mechanisms 130 are arranged in an equilateral triangle on the base 110. The upper platform 120 is adjustable and installed on the three sets of adjustment mechanisms 130. The upper platform 120 is a circular plate with a working plane on the upper surface for placing the mold sleeve 300.

[0033] like Figure 1-4 The adjustment mechanism 130 includes a C-shaped connecting block 131, an adjusting bolt 132, and a fastening nut 133. The lower end of the C-shaped connecting block 131 is fixed to the base 110. The upper end of the C-shaped connecting block 131 has a through hole 134, a first threaded hole 135, and a second threaded hole 136. The through hole 134 and the first threaded hole 135 are arranged vertically. The second threaded hole 136 intersects with the first threaded hole 135 and is arranged perpendicularly. Three vertically downward guide posts 122 are arranged on the lower surface of the upper platform 120. Each of the three guide posts 122 passes through the through hole 134 of the three C-shaped connecting blocks 131. The guide posts 122 move vertically in the through hole 134, which plays a role in limiting and guiding. The adjusting bolt 132 is threadedly engaged with the first threaded hole 135 and extends upward to abut against the lower surface of the upper platform 120. The fastening nut 133 is threadedly engaged with the second threaded hole 136 and abuts against the adjusting bolt 132.

[0034] The base 110 is a circular plate. The outer ring of the base 110 is provided with a reference surface 111 for a horizontal reference. The base 110 is provided with an upwardly protruding circular boss. The outer circumference of the circular boss is a positioning arc surface 112.

[0035] This invention provides a height gauge 200, such as Figure 4-7 The height gauge 200 includes a gauge base 210 and a measuring mechanism 220. The measuring mechanism 220 is mounted on the gauge base 210. The gauge base 210 is an arc-shaped block. The gauge base 210 is placed on the reference surface 111 of the base 110. The inner arc surface of the gauge base 210 is in contact with the positioning arc surface 112 of the base 110 for positioning.

[0036] The measuring mechanism 220 includes a main scale 221, a vernier scale 222, measuring jaws 223, and a fastening screw 224. The main scale 221 is vertically fixed to the scale base 210. The vernier scale 222 is slidably mounted on the main scale 221 and slides along the length of the main scale 221. The measuring jaws 223 are Z-shaped, with one end fixed to the vernier scale 222 and the other end serving as the measuring section. The lower surface of the measuring section of the measuring jaws 223 is the measuring surface. The fastening screw 224 is threaded into the vernier scale 222. Rotating the fastening screw 224 secures the vernier scale 222 to the main scale 221.

[0037] like Figure 4 The mold sleeve 300 is placed in the upper cavity of the mold sleeve 300. The mold sleeve 300 is placed in the middle of the support surface 121 of the upper platform 120. The gauge base 210 of the measuring mechanism 220 is placed on the reference surface 111 for contact and positioning. The measuring jaw 223 moves downward to contact the upper end surface of the mold sleeve 400 and measures the reading.

[0038] This invention provides a method for melting and casting a casting rod using a fast-melting furnace, comprising: S1. Provide a quick-melting furnace and a lifting platform 100, and position the lifting platform 100 directly below the opening of the quick-melting furnace. A heating coil is installed inside the quick-melting furnace. Obtain the heating coil height H1, the reference plane 111 height H2 of the lifting platform 100, and the maximum lifting stroke L of the lifting platform 100. max and position the lifting platform 100 at its initial height; S2. Level the support surface 121 of the lifting platform 100; S3. Provide a mold sleeve 300 with a casting rod 400 and place the mold sleeve 300 on the support surface 121 of the lifting platform 100; S4. Provide a height gauge 200 and place the height gauge 200 on the reference surface 111 on the side of the lifting platform 100; S5. Detect the height H3 of the investment casting rod 400 relative to the reference surface 111 using the height gauge 200; S6. Based on the heating coil height H1 of the fast melting furnace, the reference plane 111 height H2 of the lifting platform 100, and the height H3 of the casting rod 400 relative to the reference plane 111, obtain the lifting stroke L of the lifting platform 100 = H1 - H2 + H3, and L ≤ L max At the same time, the height gauge 200 was removed; S7. Control the lifting platform 100 to rise, with a rising stroke L, so that the investment casting bar 400 is at the same height as the heating coil of the fast melting furnace; S8. Control the start of the heating coil of the fast melting furnace to melt the casting rod 400 and pour it into the mold sleeve 300 to form the shape.

[0039] In step S2, when the lifting platform 100 is initially installed, or when the support surface 121 is not level, it is necessary to level the support surface 121 of the lifting platform 100, and to level the support surface 121 periodically.

[0040] In step S5, the measuring section of the measuring jaw 223 is first raised above the height of the investment casting rod 400. The measuring jaw 223 is then slowly lowered until the lower surface of the measuring section of the measuring jaw 223 is in contact with the upper end face of the investment casting rod 400. The reading formed by the vernier scale 222 and the main scale 221 is then read.

[0041] This invention also provides a calibration tool for a lifting platform, combined with Figure 8-10 The system includes a calibration base 510, a dual guide rail mechanism 520, and two sets of calibration modules 530. The two sets of calibration modules 530 are mounted on the dual guide rail mechanism 520 and move vertically. The dual guide rail mechanism 520 is fixedly mounted on the calibration base 510. The calibration base 510 is placed on the reference surface 111 of the base 110. The calibration base 510 is an arc-shaped block with a flat bottom surface. The bottom surface of the calibration base 510 mates with the reference surface 111, which positions the calibration base 510 horizontally. The calibration base 510 has an inner arc surface that mates with a positioning arc surface 112, which positions the inner arc surface of the calibration base 510.

[0042] The dual-rail mechanism 520 includes two guide rods 521, two sliders 522, a mounting plate 523, a first connecting plate 524, a screw 525, and a second connecting plate 526. The two guide rods 521 are fixed parallel to each other on the calibration base 510. The two sliders 522 are slidably mounted on the two guide rods 521. The first connecting plate 524 is fixedly connected to the two guide rods 521, and the second connecting plate 526 is fixedly connected to the two sliders 522. The screw 525 is rotatably mounted on the first connecting plate 524, and the screw 525 is threadedly engaged with the second connecting plate 526. The mounting plate 523 is fixedly connected to the two sliders 522. The second connecting plate 526 is arranged parallel to the first connecting plate 524. A rotating wheel 527 is fixedly mounted on the upper end of the screw 525. Rotating the rotating wheel 527 causes the screw 525 to rotate, which in turn causes the second connecting plate 526 to move up and down, thereby causing the mounting plate 523 and the two sets of calibration modules 530 to move up and down.

[0043] like Figure 2-4Two sets of calibration modules 530 are mounted on the mounting plate 523. Each calibration module 530 includes a pressure sensor 531, a sleeve 532, a movable rod 533, and a spring 534. The pressure sensor 531 and the sleeve 532 are fixedly mounted on the mounting plate 523. The movable rod 533 is movably mounted in the sleeve 532. The spring 534 is mounted in the sleeve 532. The upper end of the spring 534 abuts against the detection part of the pressure sensor 531, and the lower end of the spring 534 abuts against the movable rod 533. The lower end of the movable rod 533 is provided with a conical tip. The lower end of the movable rod 533 abuts against the upper platform 120. As the sleeve 532 continues to move downward, the movable rod 533 compresses the spring 534 in the sleeve 532. The elastic force of the spring 534 increases, and the force of the spring 534 abutting against the detection part of the pressure sensor 531 increases. As a result, the pressure sensor 531 detects a larger value.

[0044] When the movable rod 533 is naturally extended downwards, the lower ends of the two movable rods 533 are on the same plane, and this plane is parallel to the bottom surface of the calibration base 510.

[0045] The calibration method steps include: S2.1 Rotate the fastening nut 133 of the three-group adjustment mechanism 130 to move the fastening nut 133 away from the adjusting bolt 132, so that the adjusting bolt 132 can rotate and move up and down freely in the first threaded hole 135.

[0046] S2.2. Set measurement points A, B, and C on the upper surface of the upper platform 120. Measurement points A, B, and C are located directly above the three sets of adjustment mechanisms 130. The calibration tool 500 is placed on the base 110, and the calibration base 510 is placed on the reference surface 111 of the base 110. The reference surface 111 and the positioning arc surface 112 position the calibration base 510. S2.3 Rotating wheel 527 and screw 525 rotate to drive the second connecting plate 526 to move downward. The second connecting plate 526, slider 522 and mounting plate 523 move downward together. The two sets of calibration modules 530 on the mounting plate 523 move downward synchronously. The lower ends of the two movable rods 533 abut against measuring points A and B on the upper platform 120. The spring 534 in the sleeve 532 is compressed, the elastic force of the spring 534 increases, the force of the spring 534 against the detection part of the pressure sensor 531 increases, the pressure sensor 531 detects a larger value, the screw 525 stops rotating, and the value is fixed. When the values ​​of the two pressure sensors 531 are different, the adjusting bolt 132 of the adjusting mechanism 130 below measuring points A and B is adjusted so that the values ​​of the two pressure sensors 531 corresponding to measuring points A and B are the same, that is, the height difference between measuring points A and B is zero.

[0047] In step S2.3, adjust the adjusting bolt 132 of the adjusting mechanism 130 below the measuring point A. Rotate the adjusting bolt 132 to move it upward, and the adjusting bolt 132 will push the measuring point A upward, making the height of the measuring point A higher. Rotate the adjusting bolt 132 in the opposite direction, and the adjusting bolt 132 will move downward, making the height of the measuring point A lower.

[0048] In step S2.3, after the height difference between measuring point A and measuring point B is adjusted to zero, the fastening nut 133 of the adjustment mechanism 130 below measuring point A and measuring point B is rotated to abut against the adjusting bolt 132, and the adjusting bolt 132 is fixed in the first threaded hole 135.

[0049] S2.4 Measure the height difference between measuring point B and measuring point C. Adjust the adjusting bolt 132 of the adjusting mechanism 130 below measuring point C to make the height difference between measuring point C and measuring point B zero.

[0050] In step S2.4, after the height difference between measuring point C and measuring point B is adjusted to zero, the fastening nut 133 of the adjustment mechanism 130 below measuring point C is rotated to abut against the adjusting bolt 132, and the adjusting bolt 132 is fixed in the first threaded hole 135.

[0051] S2.5 Verification: Measure the height difference between measurement point C and measurement point A. The height difference between measurement point C and measurement point A is zero.

[0052] When adjusting the horizontal height of measuring points A, B, and C on the upper surface of the upper platform 120, the three guide posts 122 on the lower surface of the upper platform 120 slide up and down in the through holes 134 of the three C-shaped connecting blocks 131 for guidance and engagement.

[0053] In summary, the method of heating the casting rod in a fast-melting furnace to form the casting rod of the present invention requires measuring the height of the casting rod on each mold placed on the upper platform for different mold sleeves and casting rods. After calculating the height data, the required stroke for each rise is obtained, so that after each rise, the casting rod is located at the target height in the heating coil of the fast-melting furnace, so that the heating coil can achieve a better heating and melting effect on the casting rod. The positioning and measurement method of the casting rod of the present invention is simple and quick, and the measurement and calculation data is accurate. The upper platform is calibrated by setting up three sets of adjustment mechanisms below it. Three measurement points are selected on the upper surface of the upper platform corresponding to the three sets of adjustment mechanisms. Two measurement points are randomly selected, and the two sets of calibration modules simultaneously measure and adjust the two measurement points. Then, one of the two calibrated measurement points is selected and measured with the remaining measurement point to complete the adjustment and calibration. This makes the three measurement points on the same plane, and the upper surface of the upper platform is calibrated. The calibration operation is simple and the calibration process is quick, which improves the calibration efficiency of the lifting platform.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A method for melting and casting a casting rod using a fast-melting furnace, characterized in that, include: S1, provide a fast smelting furnace, a lifting platform (100), and place the lifting platform (100) directly below the opening of the fast smelting furnace, obtain the height H1 of the heating coil of the fast smelting furnace, the height H2 of the reference surface (111) of the lifting platform (100), and the maximum lifting stroke L of the lifting platform (100) max , and place the lifting platform (100) at an initial height; S2. Level the support surface (121) of the lifting platform (100); S3. Provide a mold sleeve (300) with a casting rod (400) and place the mold sleeve (300) on the support surface (121) of the lifting platform (100); S4. Provide a height gauge (200) and place the height gauge (200) on the reference plane (111) on the side of the lifting platform (100). S5. Detect the height H3 of the investment casting rod (400) relative to the reference surface (111) using a height gauge (200); S6、According to the height H1 of the heating coil of the fast melting furnace, the height H2 of the reference surface (111) of the lifting platform (100), and the height H3 of the molten mold rod (400) relative to the reference surface (111), the lifting stroke L of the lifting platform (100) is obtained, and L≤L max At the same time, the height gauge (200) is removed. S7. Control the lifting platform (100) to rise, with a rising stroke L, so that the height of the investment casting bar (400) is the same as that of the heating coil of the fast melting furnace; S8. Control the start of the heating coil of the fast melting furnace to melt the casting rod (400) and pour it into the mold sleeve (300) to form the shape.

2. The method of claim 1 for heating a mold material rod for investment casting by means of a fast furnace, characterized in that Step S2 specifically includes: S2.1 The lifting platform (100) is equipped with three sets of adjustment mechanisms (130). Rotate the fastening nuts (133) of the three sets of adjustment mechanisms (130) to move the fastening nuts (133) away from the adjusting bolts (132), so that the adjusting bolts (132) can rotate and move up and down freely in the first threaded hole (135). S2.

2. Set measurement points A, B and C on the upper surface of the upper platform (120). Measurement points A, B and C are located directly above the three sets of adjustment mechanisms (130). S2.3 Measure the height difference between measuring point A and measuring point B, and adjust the adjusting bolt (132) of the adjusting mechanism (130) below measuring point A and / or measuring point B to make the height difference between measuring point A and measuring point B zero; S2.4 Measure the height difference between measuring point B and measuring point C. Adjust the adjusting bolt (132) of the adjusting mechanism (130) below measuring point C so that the height difference between measuring point C and measuring point B is zero.

3. The method of claim 2 for heating a mold material rod for investment casting by means of a fast melting furnace, characterized in that It also includes step S2.5, verification, measuring the height difference between measurement point C and measurement point A, and the height difference between measurement point C and measurement point A is zero.

4. The method according to claim 2, which uses a fast-melting furnace to heat a casting rod to form a molded shape, is characterized in that... In step S2.3, adjust the adjusting bolt (132) of the adjusting mechanism (130) below the measuring point A. Rotate the adjusting bolt (132) to move it upward. The adjusting bolt (132) pushes the measuring point A upward, and the height of the measuring point A increases. Rotate the adjusting bolt (132) in the opposite direction, and the adjusting bolt (132) moves downward, and the height of the measuring point A decreases. In step S2.3, after the height difference between measuring point A and measuring point B is adjusted to zero, the fastening nut (133) of the adjustment mechanism (130) below measuring point A and measuring point B is rotated to abut against the adjusting bolt (132), and the adjusting bolt (132) is fixed in the first threaded hole (135).

5. The method of claim 2 for heating a mold material rod for investment casting by means of a fast furnace, characterized in that, In step S2.4, after the height difference between measuring point C and measuring point B is adjusted to zero, the fastening nut (133) of the adjustment mechanism (130) below measuring point C is rotated to abut against the adjusting bolt (132), and the adjusting bolt (132) is fixed in the first threaded hole (135).

6. The method of claim 2 for heating a mold material rod for investment casting by means of a fast furnace, characterized in that, When adjusting the horizontal height of measuring points A, B and C on the upper surface of the upper platform (120), the three guide posts (122) on the lower surface of the upper platform (120) slide up and down in the through holes (134) of the three C-shaped connecting blocks (131) respectively.

7. The method of heating a mold material rod for investment casting by means of a fast furnace as defined in claim 1, wherein The lifting platform (100) includes a base (110), an upper platform (120), and three sets of adjustment mechanisms (130). The three sets of adjustment mechanisms (130) are arranged in an equilateral triangle on the base (110). The upper platform (120) is adjustablely mounted on the three sets of adjustment mechanisms (130). The upper surface of the upper platform (120) is a support surface (121), and the lower surface of the upper platform (120) is provided with three guide columns (122). The adjustment mechanism (130) includes a C-shaped connecting block (131), an adjusting bolt (132), and a fastening nut (133). The lower end of the C-shaped connecting block (131) is fixed on the base (110). The upper end of the C-shaped connecting block (131) is provided with a through hole (134), a first threaded hole (135), and a second threaded hole (136). The three guide posts (122) each pass through the through holes (134) of the three C-shaped connecting blocks (131). The guide posts (122) slide up and down in the through holes (134) of the C-shaped connecting blocks (131) for guidance. The adjusting bolt (132) is threadedly engaged with the first threaded hole (135) and extends upward to abut against the upper platform (120). The second threaded hole (136) intersects with the first threaded hole (135). The fastening nut (133) is threadedly engaged with the second threaded hole (136) and abuts against the adjusting bolt (132).

8. The method of claim 7 for heating a mold material rod for investment casting using a fast furnace, wherein, The base (110) has a horizontal reference surface (111) on its outer ring, and a circular boss protruding upward in the middle of the base (110). The outer periphery of the circular boss is a positioning arc surface (112).

9. The method of claim 8 for heating a mold material rod for investment casting using a fast furnace, wherein, The height gauge (200) includes a gauge base (210) and a measuring mechanism (220). The measuring mechanism (220) is mounted on the gauge base (210). The gauge base (210) is an arc-shaped block. The gauge base (210) is placed against the reference surface (111) of the base (110). The inner arc surface of the gauge base (210) is fitted and positioned against the positioning arc surface (112) of the base (110).

10. The method of claim 9 for heating a mold material rod for investment casting using a fast furnace, wherein The measuring mechanism (220) includes a main scale (221), a vernier scale (222), and a measuring jaw (223). The main scale (221) is vertically fixed on the scale base (210). The vernier scale (222) is slidably mounted on the main scale (221) and slides along the length of the main scale (221). The measuring jaw (223) is Z-shaped. One end of the measuring jaw (223) is fixed on the vernier scale (222), and the other end of the measuring jaw (223) is the measuring section. The lower surface of the measuring section of the measuring jaw (223) is the measuring surface.

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