Slag sample sampler

Abstract

The utility model belongs to the technical field of ferrous metallurgy, and particularly relates to a slag sample sampler which is used for collecting slag samples in a large-section casting blank crystallizer and comprises a transverse connecting rod, a sampling rod and a lifting handle, the transverse connecting rod is arranged at the lower end of the lifting handle; the sampling rods are vertically arranged on the transverse connecting rod, and the plurality of sampling rods are distributed at intervals along the axial direction of the transverse connecting rod. The sampler disclosed by the utility model is used for collecting slag samples in a large-section casting blank crystallizer, and can be used for simultaneously sampling at different positions at one time, so that the actual condition of casting powder in the production process can be more accurately mastered.

Description

Technical Field

[0001] The utility model belongs to the technical field of iron and steel metallurgy, and in particular relates to a slag sampler. Background Art

[0002] The protective slag added to the surface of the molten steel in the crystallizer gradually heats up and sinters and melts under the action of the heat released by the molten steel, forming a double, triple or multi-layer slag structure on the surface of the molten steel in the crystallizer. The addition of protective slag prevents secondary oxidation of the molten steel, insulates and reduces heat loss of the molten steel, absorbs and dissolves non-metallic inclusions, lubricates between the crystallizer wall and the billet shell, and improves and controls heat transfer between the billet and the crystallizer. It is a key condition for achieving smooth continuous casting process and producing defect-free billets.

[0003] At present, the on-site slag analysis sampling is carried out by the operator using a φ30mm diameter, 4m long oxygen blowing tube to penetrate into the slag layer, stay for 2S and then take it out. After the slag is cooled, the slag is scraped off, collected and sent to the analysis room for analysis and testing.

[0004] The above-mentioned slag sampling method is suitable for uniform distribution during casting, but in the actual production process, for example, when producing large-section aluminum-containing special-shaped billets, single-point unbalanced casting is used, the molten steel flows asymmetrically in the crystallizer, the heat distribution in the crystallizer is uneven, the temperature difference between the pouring side and the non-pouring side is large, and the parts with good flow field in the crystallizer have high molten steel temperature, the protective slag melting effect is good, and it is not easy to form a crust. On the contrary, the protective slag melting effect is poor and it is easy to form a crust. Therefore, the protective slag is unbalancedly distributed during the casting process, that is, the amount of protective slag added to the pouring side and the non-pouring side is different. In order to truly understand the melting situation of the protective slag and the physical and chemical properties of the protective slag, it is necessary to take slag samples from multiple parts at one time to provide theoretical guidance for the unbalanced distribution of protective slag. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a slag sampler, which can take slag samples from multiple parts at one time.

[0006] The utility model solves the technical problem by adopting a technical solution: a slag sampler is used for collecting slag samples in a large-section casting mold, and the sampler comprises a horizontal connecting rod, a sampling rod and a lifting handle;

[0007] The transverse connecting rod is arranged at the lower end of the lifting handle;

[0008] The sampling rods are vertically arranged on the transverse connecting rod, and a plurality of sampling rods are distributed along the axial direction of the transverse connecting rod at intervals from each other.

[0009] Preferably, the utility model further comprises a slag holding bucket, wherein the slag holding bucket is provided with a sampling slot matching the sampling rod, and a coolant can be arranged in the sampling slot to cool the slag on the sampling rod and to respectively hold the taken slag samples for easy detection.

[0010] Preferably, the inner wall of the sampling trough is provided with a heat-resistant coating to make the slag bucket more durable.

[0011] Preferably, the connecting rod of the utility model is provided with a connecting portion capable of adjusting the position of the sampling rod, thereby adjusting the sampling position to meet the sampling requirements of ingots of different sizes.

[0012] Preferably, the connection part is a fixed hole arranged at intervals along the axial direction of the horizontal connecting rod, and the sampling rod is detachably arranged in the fixed hole. The sampling rod is placed in the fixed hole at different positions to adjust the sampling position.

[0013] Preferably, the connection part includes a plurality of sliders slidably arranged on the horizontal connecting rod, and the sampling rod is fixedly arranged on the sliders. The sliders are used to adjust the position of the sampling rod on the horizontal connecting rod, thereby adjusting the sampling position.

[0014] Preferably, the sampling rod is welded to the transverse connecting rod.

[0015] Preferably, the transverse connecting rod, the sampling rod and the lifting handle are all made of oxygen blowing tubes. The utility model is made by cutting and welding the used oxygen blowing tubes, which can save resources.

[0016] Preferably, the lifting handle is arranged obliquely above the horizontal connecting rod in the utility model, so as to facilitate the on-site operator to vertically insert the sampling rod into the slag when taking slag samples.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the sampler of the utility model is used for collecting slag samples in a large-section casting mold, and can achieve simultaneous sampling at different positions at one time, thereby achieving a more accurate grasp of the actual situation of the protective slag in the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the slag sampler of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the horizontal connecting rod and the sampling rod in Example 1 of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the horizontal connecting rod and the sampling rod in Example 2 of the utility model;

[0021] Figure 4 This is a schematic diagram of the use of the slag sampler of the utility model;

[0022] In the figure, 1 is a horizontal connecting rod, 2 is a sampling rod, 3 is a lifting handle, 4 is a slag bucket, and 5 is a water outlet;

[0023] 41 sampling slot, 11 connecting part. DETAILED DESCRIPTION

[0024] The specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings.

[0025] Example 1

[0026] like Figure 1 As shown, a slag sampler is used for collecting slag samples in a large-section casting mold. The sampler includes a horizontal connecting rod 1, a sampling rod 2 and a lifting handle 3. The lifting handle 3 is 4 meters long, the horizontal connecting rod 1 is 0.37 meters long, and the sampling rod 2 is 0.06 meters long. The horizontal connecting rod 1, the sampling rod 2 and the lifting handle 3 are all processed from a used oxygen blowing pipe.

[0027] The transverse connecting rod 1 is arranged at the lower end of the lifting handle 3. The lifting handle 3 is arranged above the transverse connecting rod 1 by being welded obliquely.

[0028] The sampling rods 2 are vertically arranged on the transverse connecting rod 1, and the three sampling rods 2 are evenly spaced from each other along the axial direction of the transverse connecting rod 1. The sampling rods 2 are welded to the transverse connecting rod 1.

[0029] The slag sampler further comprises a slag bucket 4 , and the slag bucket 4 is provided with a sampling slot 41 matching with the sampling rod 2 .

[0030] The inner wall of the sampling slot 41 is provided with a heat-resistant coating.

[0031] Example 2

[0032] like Figure 2 As shown, the difference from embodiment 1 is that the connecting rod 1 is provided with a connecting portion 11 which can adjust the position of the sampling rod 2.

[0033] The connecting portion 11 is a fixing hole arranged at intervals along the axial direction of the horizontal connecting rod 1, and the sampling rod 2 is detachably arranged in the fixing hole. The sampling rod 2 is threadedly connected to the fixing hole.

[0034] Example 3

[0035] like Figure 3As shown, the difference from Example 2 is that the connecting portion 11 includes a plurality of sliders slidably arranged on the transverse connecting rod 1, and the sampling rod 2 is fixedly arranged on the sliders. The sliders are arranged on the transverse connecting rod 1 through clamps, and the sampling rod 2 is threadedly connected to the sliders.

[0036] Working principle:

[0037] like Figure 4 As shown, when producing large-section aluminum-containing special-shaped blanks, single-point non-equilibrium casting is adopted, and molten steel is poured from the water inlet 5 on one side of the crystallizer. When taking slag analysis samples, the sampling rod 2 of the slag sampler is inserted into the slag layer, stayed for 2S and then taken out. The sampling rod 2 is placed in the slag bucket 4 in turn for cooling. After the slag is cooled, the slag on the sampling rod 2 is scraped into the corresponding slag bucket 4 in turn.

Claims

1. A slag sampler, characterized in that: Used for collecting slag samples in a large-section casting mold, the sampler comprises a horizontal connecting rod (1), a sampling rod (2) and a lifting handle (3); The transverse connecting rod (1) is arranged at the lower end of the lifting handle (3); The sampling rod (2) is vertically arranged on the transverse connecting rod (1), and a plurality of sampling rods (2) are distributed at intervals along the axial direction of the transverse connecting rod (1).

2. The slag sampler according to claim 1, characterized in that: It also comprises a slag bucket (4), wherein the slag bucket (4) is provided with a sampling groove (41) matching the sampling rod (2).

3. The slag sampler according to claim 2, characterized in that: The inner wall of the sampling groove (41) is provided with a heat-resistant coating.

4. The slag sampler according to claim 1, characterized in that: The connecting rod (1) is provided with a connecting portion (11) capable of adjusting the position of the sampling rod (2).

5. The slag sampler according to claim 4, characterized in that: The connecting portion (11) is a fixing hole arranged at intervals from each other along the axial direction of the transverse connecting rod (1), and the sampling rod (2) is detachably arranged in the fixing hole.

6. The slag sampler according to claim 4, characterized in that: The connecting portion (11) comprises a plurality of sliding blocks which are slidably arranged on the transverse connecting rod (1), and the sampling rod (2) is fixedly arranged on the sliding blocks.

7. The slag sampler according to claim 1, characterized in that: The sampling rod (2) is welded to the transverse connecting rod (1).

8. The slag sampler according to claim 1, characterized in that: The transverse connecting rod (1), the sampling rod (2) and the lifting handle (3) are all made of an oxygen blowing tube.

9. The slag sampler according to claim 1, characterized in that: The lifting handle (3) is arranged obliquely above the horizontal connecting rod (1).

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