Multifunctional molten iron sampling mold
By designing a multifunctional molten iron sampling mold, which adopts an L-shaped base and magnetic structure, the problems of bubble generation and demolding difficulties in molten iron sampling devices are solved. This enables simultaneous collection of spectral and gas analysis samples and convenient demolding, thereby reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 福建青拓特钢技术研究有限公司
- Filing Date
- 2025-04-18
- Publication Date
- 2026-05-12
AI Technical Summary
Existing molten iron sampling devices are prone to generating air bubbles during the sampling process, leading to inaccurate spectral analysis results and difficulties in demolding, making it difficult to simultaneously collect samples for spectral and gas analysis.
Design a multifunctional molten iron sampling mold, which includes an L-shaped base and a mold body. The interior is equipped with a sample chamber for spectral and gas analysis. The sample is demolded separately using a magnetic suction structure. The L-shaped base design avoids gas venting holes. The molten iron is formed by its own pressure.
It enables the simultaneous acquisition of spectral and gas analysis samples in a single sampling, with good demolding effect, convenient operation, avoidance of bubble generation, and reduction of usage costs.
Smart Images

Figure CN224231599U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel testing equipment technology, and in particular to a multifunctional molten iron sampling mold. Background Technology
[0002] In steelmaking, the composition of molten iron needs to be determined using a spectrometer to check if the content of all elements meets the standards. The general procedure involves taking a sample of the molten iron using a sampling device, removing the sample after it cools and solidifies, and then analyzing it using a spectrometer. Gas analysis of the molten iron is also required during steelmaking. The samples for both types of analysis have the following characteristics: thin-handled samples, typically 5-8 mm in diameter (gas analysis); ingot samples, 30-50 mm in diameter (spectral analysis).
[0003] Existing sampling devices typically consist of a sample cup with an internal cavity. Molten iron is poured into the cavity, cooled to form a sample block, and then poured out. This type of sampling device has the following problems: 1. During the pouring of molten iron into the cavity, some air bubbles are generated and cannot be expelled in time, resulting in differences in the composition and content of the sample compared to the actual molten steel, leading to inaccurate spectral analysis results; 2. Samples are inconvenient to demold; 3. If the thin-stem sample and the ingot sample are sampled in one go, if the thin-stem sample is at the bottom, air compression causes bubbling and prevents proper forming; if the thin-stem sample is at the top, the large bottom and narrow tube result in insufficient flow rate, causing hollow samples. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a multifunctional molten iron sampling mold that can complete the collection of spectral analysis and gas analysis samples in one go, while having good demolding effect and ease of operation.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a multifunctional molten iron sampling mold is provided, including an L-shaped base and a cuboid mold body placed on the surface of the L-shaped base. The mold body includes a vertically oriented spectral analysis sample chamber and a horizontally oriented gas analysis sample chamber. The gas analysis sample chamber is connected to the lower part of the spectral analysis sample chamber. The vertical plane where the axis of symmetry of the L-shaped base is located divides the mold body, the spectral analysis sample chamber and the horizontally oriented gas analysis sample chamber into two halves. Magnets are respectively provided on the two halves of the mold body.
[0006] The beneficial effects of this utility model are as follows: This multifunctional molten iron sampling mold, through its innovative split-channel design and magnetic adhesion structure, achieves simultaneous acquisition of spectral and gas analysis samples in a single sampling. Specifically, the mold body is demolded in two halves, replacing traditional demolding methods, resulting in excellent demolding performance. Magnetic adhesion further facilitates mold adhesion and convenient opening and closing. The L-shaped base design utilizes the tiny gaps created by magnetic adhesion to avoid venting, and the flatness of the L-shaped base is guaranteed, eliminating the need for complete replacement due to unevenness at the bottom. This saves on usage costs. Utilizing the cooling time difference, gas and spectral samples can be quickly cut off. Molten iron itself is used for horizontal flow forming. The cavity design avoids the problem of hollowness caused by a large bottom and thin tube when the sample with a thin handle is at the top, resulting in insufficient flow rate. If the sample is at the bottom, air compression causes bubbling and incomplete forming. Attached Figure Description
[0007] Figure 1 This is a schematic diagram of the structure of a multifunctional molten iron sampling mold according to a specific embodiment of the present invention;
[0008] Figure 2 A side view of a multifunctional molten iron sampling mold according to a specific embodiment of this utility model;
[0009] Label Explanation:
[0010] 1. L-shaped base; 2. Mold body; 3. Spectroscopic analysis sample chamber; 4. Gas analysis sample chamber; 5. Force groove; 6. Magnet. Detailed Implementation
[0011] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.
[0012] This utility model provides a multifunctional molten iron sampling mold, including an L-shaped base and a cuboid mold body placed on the surface of the L-shaped base. The mold body includes a vertically oriented spectral analysis sample chamber and a horizontally oriented gas analysis sample chamber. The gas analysis sample chamber is connected to the lower part of the spectral analysis sample chamber. The vertical plane containing the axis of symmetry of the L-shaped base divides the mold body, the spectral analysis sample chamber, and the horizontally oriented gas analysis sample chamber into two halves. Magnets are respectively provided on the two halves of the mold body.
[0013] The beneficial effects of this utility model are as follows: This multifunctional molten iron sampling mold, through its innovative split-channel design and magnetic adhesion structure, achieves simultaneous acquisition of spectral and gas analysis samples in a single sampling. Specifically, the mold body is demolded in two halves, replacing traditional demolding methods, resulting in excellent demolding performance. Magnetic adhesion further facilitates mold adhesion and convenient opening and closing. The L-shaped base design utilizes the tiny gaps created by magnetic adhesion to avoid venting, and the flatness of the L-shaped base is guaranteed, eliminating the need for complete replacement due to unevenness at the bottom. This saves on usage costs. Utilizing the cooling time difference, gas and spectral samples can be quickly cut off. Molten iron itself is used for horizontal flow forming. The cavity design avoids the problem of hollowness caused by a large bottom and thin tube when the sample with a thin handle is at the top, resulting in insufficient flow rate. If the sample is at the bottom, air compression causes bubbling and incomplete forming.
[0014] Furthermore, in the aforementioned multifunctional molten iron sampling mold, the two halves of the mold body are respectively provided with force-bearing grooves.
[0015] As described above, the force groove allows for easy opening of the two magnetically attached half-molds.
[0016] Furthermore, in the aforementioned multifunctional molten iron sampling mold, the spectral analysis sample chamber is cylindrical with a diameter of 30 mm.
[0017] Furthermore, in the aforementioned multifunctional molten iron sampling mold, the gas analysis sample chamber is cylindrical with a diameter of 5 mm.
[0018] Furthermore, in the aforementioned multifunctional molten iron sampling mold, the spectral analysis sample chamber is connected to the surface of the L-shaped base.
[0019] Furthermore, in the aforementioned multifunctional molten iron sampling mold, the gas analysis sample chamber is connected to the surface of the L-shaped base.
[0020] As described above, the L-shaped base has a guaranteed flat bottom, eliminating the need for complete replacement due to unevenness. This saves on usage costs. Furthermore, in the aforementioned multi-functional molten iron sampling mold, the mold body is made of graphite.
[0021] Furthermore, in the aforementioned multifunctional molten iron sampling mold, the L-shaped base is made of graphite.
[0022] As described above, using graphite material results in low cost, good demolding effect, and easy sanding. Regarding the effect of carbon on the results, a carbon permeation experiment was conducted; rapid cooling had no impact on the results.
[0023] Furthermore, in the aforementioned multifunctional molten iron sampling mold, each of the two halves of the mold body is provided with a force-receiving groove, and a magnet is placed in each of the two force-receiving grooves.
[0024] As described above, magnets are placed in the force-bearing grooves to facilitate their installation and use.
[0025] Furthermore, in the aforementioned multifunctional molten iron sampling mold, when the mold body is magnetically attached, the distance between the magnets in the two force-receiving grooves is 1mm.
[0026] As described above, the magnets in the two force-receiving grooves are separated by the side walls of the force-receiving grooves, with a distance of 1mm, which facilitates the installation and use of the magnets.
[0027] Example 1
[0028] Please refer to Figure 1 and Figure 2 As shown, a multifunctional molten iron sampling mold includes an L-shaped base 1 and a cuboid mold body 2 placed on the surface of the L-shaped base 1. The mold body 2 includes a vertically oriented spectral analysis sample chamber 3 and a horizontally oriented gas analysis sample chamber 4. The gas analysis sample chamber 4 is connected to the lower part of the spectral analysis sample chamber 3. The vertical plane containing the axis of symmetry of the L-shaped base 1 divides the mold body 2, the spectral analysis sample chamber 3, and the horizontally oriented gas analysis sample chamber 4 into two halves. Magnets 6 are respectively provided on the two halves of the mold body 2.
[0029] The mold body 2 has force-receiving grooves 5 on each of its two halves. The spectral analysis sample chamber 3 is cylindrical with a diameter of 30 mm. The gas analysis sample chamber 4 is cylindrical with a diameter of 5 mm. The spectral analysis sample chamber 3 is connected to the surface of the L-shaped base 1. The gas analysis sample chamber 4 is connected to the surface of the L-shaped base 1.
[0030] The mold body 2 is made of graphite. The L-shaped base 1 is also made of graphite. Each half of the mold body 2 has a force-receiving groove 5, and a magnet 6 is placed in each of the two force-receiving grooves 5. The distance between the magnets 6 in the two force-receiving grooves 5 is 1 mm.
[0031] Application of this multifunctional molten iron sampling mold:
[0032] During sampling, the mold is first placed flat with the seam intact. Molten iron is poured into the inlet of the spectral analysis sample chamber 3 of the large cylinder of the mold. The molten iron is poured in and stabilized, and then enters the gas analysis sample chamber 4 stably. Then, the force is applied using the force groove 5 on the mold to open the mold, thus obtaining the spectral and gas analysis samples.
[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A multifunctional molten iron sampling mold, characterized in that, The device includes an L-shaped base and a cuboid mold body placed on the surface of the L-shaped base. The mold body contains a vertically oriented spectral analysis sample chamber and a horizontally oriented gas analysis sample chamber. The gas analysis sample chamber is connected to the lower part of the spectral analysis sample chamber. The vertical plane containing the axis of symmetry of the L-shaped base divides the mold body, the spectral analysis sample chamber, and the horizontally oriented gas analysis sample chamber into two halves. Magnets are provided on each half of the mold body.
2. The multifunctional molten iron sampling mold according to claim 1, characterized in that, The mold body is provided with force grooves on each of its two halves.
3. The multifunctional molten iron sampling mold according to claim 1, characterized in that, The spectral analysis sample chamber is cylindrical with a diameter of 30 mm.
4. The multifunctional molten iron sampling mold according to claim 1, characterized in that, The gas analysis sample chamber is cylindrical with a diameter of 5 mm.
5. The multifunctional molten iron sampling mold according to claim 1, characterized in that, The spectral analysis sample chamber is connected to the surface of the L-shaped base.
6. The multifunctional molten iron sampling mold according to claim 1, characterized in that, The gas analysis sample chamber is connected to the surface of the L-shaped base.
7. The multifunctional molten iron sampling mold according to claim 1, characterized in that, The mold body is made of graphite.
8. The multifunctional molten iron sampling mold according to claim 1, characterized in that, The L-shaped base is made of graphite.
9. The multifunctional molten iron sampling mold according to claim 1, characterized in that, Each half of the mold body is provided with a force groove, and a magnet is placed in each of the two force grooves.
10. The multifunctional molten iron sampling mold according to claim 9, characterized in that, When the mold body is magnetically attached, the distance between the magnets in the two force-receiving grooves is 1mm.