Accurate sampling device for titanium alloy cast ingot

Abstract

The utility model relates to an accurate sampling device for a titanium alloy cast ingot. The device comprises a stand column, a pull rod bracket, a hinge, a rotating shaft, a pull rod ruler and a marking seal, the pull rod supports are evenly distributed on the periphery of the stand column in the circumferential direction, and the upper ends of the pull rod supports are hinged to the outer side of the upper portion of the stand column through hinges. The inner end of the pull rod ruler is connected to the outer side of the lower portion of the stand column through a rotating shaft rotating pair. And the marking seal is correspondingly arranged at the outer end of the pull rod ruler. According to the utility model, the accurate sampling of the cast ingot can be realized, and the relative position of each sampling point has high contrast, so that the accuracy of the analysis result of the component uniformity of the cast ingot is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of titanium alloy ingot processing, in particular to a titanium alloy ingot precision sampling device. Background Art

[0002] The main vacuum melting methods for titanium alloys include vacuum consumable arc melting, electron beam cold hearth melting and plasma cold hearth melting. At present, the melting of titanium alloys for aviation in my country basically adopts the vacuum consumable arc furnace melting (VAR) method. For titanium alloy ingots with high quality requirements, they generally undergo three VAR meltings to obtain ingots with uniform composition and low defect rate.

[0003] In order to ensure that the smelting process used can obtain ingots with uniform composition, the composition analysis of the ingot is an essential research process for the optimization of the smelting process. Therefore, the accuracy of the composition analysis of the ingot is crucial. At present, the composition analysis sampling of the ingot is mainly carried out on the sides and the head and tail of the ingot. Figure 2 As shown in the figure, the side sampling of the ingot is to take the chip-like sample at a certain distance from the head and tail after the ingot is peeled, and the sampling point is relatively fixed. Figure 3 The 9 points shown need to be cut into block samples for testing and analysis. However, in the actual sampling process, if the sampling point area is not strictly marked when cutting each point, it is difficult to avoid large relative position errors of the cut sampling points. Figure 3 For the sample points 1, 2, 3, and 4 at the edge, it is difficult for the cutting positions to be at the same distance from the edge of the ingot.

[0004] Obviously, the edge of the ingot solidifies first during the smelting process, and it is inevitable that a certain thickness of metallurgical defects will form under the surface of the ingot. Therefore, the closer to the edge of the ingot, the more unstable the composition distribution. Although there are corresponding national standards for the composition analysis and sampling methods of titanium alloy ingots, which clearly stipulate the sampling method and the thickness of the ingot skin, for scientific research experiments, the ingot smelting process of some titanium alloy grades has not yet been solidified, so it is impossible to accurately control the thickness of the metallurgical defects under the ingot skin. Faced with this situation, accurate composition analysis can intuitively express the composition uniformity of the ingot, and further reflect whether the smelting process is reasonable. Therefore, accurate sampling of the ingot is a basic prerequisite for optimizing the smelting process.

[0005] In summary, regarding the sampling scheme for composition analysis of titanium alloy ingots, the existing sampling methods are difficult to ensure the accuracy of the sample position. For this reason, the utility model is proposed to achieve accurate sampling of titanium alloy ingots and further improve the effectiveness of composition analysis for smelting process feedback. Summary of the invention

[0006] In view of the above problems, the purpose of the utility model is to provide a precise sampling device for titanium alloy ingots, which can achieve precise sampling of ingots, and the relative positions of each sampling point are highly contrasting, thereby improving the accuracy of the analysis results of the uniformity of the ingot composition.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] The utility model proposes a titanium alloy ingot precision sampling device, comprising a column, a tie rod bracket, a hinge, a rotating shaft, a tie rod scale and a marking stamp; the tie rod bracket is evenly distributed circumferentially around the column, and the upper ends of the tie rod brackets are hinged to the upper outer side of the column through hinges; the inner end of the tie rod scale is connected to the lower outer side of the column through a rotating shaft rotation pair; the marking stamp is correspondingly arranged at the outer end of the tie rod scale.

[0009] Furthermore, a fixing shoe is provided at the lower end of the pull rod bracket.

[0010] Furthermore, a lock buckle is provided on the outer side of the fixed hoof.

[0011] Furthermore, a knob is provided at the top of the column, and the knob is connected to the hinge respectively for controlling the opening and closing of the pull rod bracket.

[0012] A method for accurately sampling titanium alloy ingots comprises the following steps:

[0013] S1. Preparation of sampling device;

[0014] S2. When sampling, the lower ends of the pull rod brackets of the device are fixed to the radial end surface edges of the ingot in sequence;

[0015] S3. Adjust the pull rod scale to the desired sampling point position;

[0016] S4. Mark the sampling point by marking the stamp;

[0017] S5, then rotate the pull rod ruler to a certain angle to mark the next sampling point;

[0018] S6. Cut and sample the marked sampling points, and directly sample the center point.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] Compared with the existing titanium alloy ingot sampling method, the utility model can accurately locate the sampling point, avoid the position error between the cutting boundary and the sampling point in the process of taking block samples of the ingot, reduce the size error of the sampling points at the same position to a minimum, and realize the precise sampling of titanium alloy ingots. It greatly improves the accuracy of the ingot composition analysis results and has important reference and reference value in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a titanium alloy ingot precision sampling device proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of sampling from the side of the ingot;

[0023] Figure 3 This is a schematic diagram of 9-point sampling in the radial direction of the ingot;

[0024] Figure 4 This is a schematic diagram of 17 radial sampling points on the ingot.

[0025] Among them, the figure markings are: 1-knob; 2-hinge; 3-pull rod bracket; 4-fixed shoe foot; 5-lock; 6-column; 7-rotating shaft; 8-pull rod scale; 9-marking stamp. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] It should be noted that, in the description of the present invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation.

[0028] like Figure 1 As shown, the titanium alloy ingot precision sampling device proposed by the utility model comprises a hinge 2, a pull rod bracket 3, a column 6, a rotating shaft 7, a pull rod scale 8 and a marking stamp 9.

[0029] In this embodiment, four tie rod supports 3 are provided, which are evenly distributed around the column 6, and the upper ends of the tie rod supports 3 are hinged to the upper outer sides of the column 6 through hinges 2, and the tie rod supports 3 can be opened and closed by the hinges; the tie rod supports 3 can be adjusted in length by telescopic means; the opening and closing degree and length of the tie rod supports 3 can be adjusted to match the end face diameter of the ingot; the inner end of the tie rod scale 8 is connected to the lower outer side of the column 6 through a rotating pair of the rotating shaft 7; the marking stamp 9 is fixed to the outer end of the tie rod scale 8, and the marking stamp 9 can reach the target sampling point by rotating the tie rod scale 8 and adjusting its length, thereby marking the sample point.

[0030] Among them, the lower end of the pull rod bracket 3 is equipped with a fixed shoe foot 4, and the inner end face of the fixed shoe foot 4 is provided with a right-angle groove for matching with the edge of the end face of the ingot; the outer side of the fixed shoe foot 4 is provided with a lock buckle 5, and the lock buckle 5 is connected to the fixed shoe foot 4 by screwing. After the fixed shoe foot 4 matches with the edge of the end face of the ingot, the fixed shoe foot 4 can be further clamped to the edge of the ingot by screwing the lock buckle 5.

[0031] In this embodiment, a knob 1 is further provided at the top of the column 6 , and the knob 1 is connected to the top of the column 6 by a rotation pair and is also connected to each hinge 2 respectively, so as to control the opening and closing of the pull rod bracket 3 .

[0032] A method for accurately sampling titanium alloy ingots, comprising the following steps:

[0033] S1. Preparation of sampling device;

[0034] S2. When sampling, the lower ends of the pull rod brackets of the device are fixed to the radial end surface edges of the ingot in sequence;

[0035] S3. Adjust the pull rod scale to the desired sampling point position;

[0036] S4. Mark the sampling point by marking the stamp;

[0037] S5, then rotate the pull rod ruler to a certain angle to mark the next sampling point;

[0038] S6. Cut and sample the marked sampling points, and directly sample the center point.

[0039] The method is further described below through specific examples:

[0040] Take 9-point sampling on the end face of a titanium alloy ingot with a diameter of 310 mm as an example:

[0041] S1. Preparation of sampling device;

[0042] S2, adjusting the length of the knob 1 and the tie rod bracket 3, so that the fixed shoe feet 4 at the lower ends of the four tie rod brackets 3 are placed at the edge of the ingot in a cross shape in four different directions;

[0043] The fixing shoe foot 4 is clamped to the edge of the ingot by the lock buckle 5. At this time, the whole sampling device is fixed to the edge of the end face of the ingot under the action of the fixing shoe foot 4;

[0044] S3, at this time, the bottom end of the column 6 is located at the center of the ingot, and the length of the pull rod ruler 8 is adjusted to the target sampling point;

[0045] S4, marking the corresponding sampling points by marking stamp 9;

[0046] S5. After marking a sampling point, rotate the pull rod scale 8, that is, rotate with the rotating shaft 7 as the center. Figure 3 As shown, the pull rod ruler 8 can be rotated 90° to mark the next sampling point;

[0047] For the sampling point at the radial midpoint of the ingot end face, the length of the pull rod scale 8 is halved, and the operations of steps S4 and S5 are repeated.

[0048] S6. Cut and sample the marked sampling points, and directly sample the center point.

[0049] Take 17-point sampling on the end face of a titanium alloy ingot with a diameter of 1080 mm as an example:

[0050] S1. Preparation of sampling device;

[0051] S2, adjusting the length of the knob 1 and the tie rod bracket 3, so that the fixed shoe feet 4 at the lower ends of the four tie rod brackets 3 are placed at the edge of the ingot in a cross shape in four different directions;

[0052] The fixing shoe foot 4 is clamped to the edge of the ingot by the lock buckle 5. At this time, the whole sampling device is fixed to the edge of the end face of the ingot under the action of the fixing shoe foot 4;

[0053] S3, at this time, the bottom end of the column 6 is located at the center of the ingot, and the length of the pull rod ruler 8 is adjusted to the target sampling point;

[0054] S4, marking the corresponding sampling points by marking stamp 9;

[0055] S5. After marking a sampling point, rotate the pull rod scale 8, that is, rotate with the rotating shaft 7 as the center. Figure 4 As shown, the pull rod scale 8 can be rotated 45° to mark the next sampling point;

[0056] For the sampling point at the radial midpoint of the ingot end face, the length of the pull rod scale 8 is halved, and the operations of steps S4 and S5 are repeated.

[0057] S6. Cut and sample the marked sampling points, and directly sample the center point.

[0058] Matters not described in detail in this utility model are all known technologies.

[0059] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A titanium alloy ingot precision sampling device, characterized in that: The device includes a column, a pull rod bracket, a hinge, a rotating shaft, a pull rod scale and a marking stamp; the pull rod brackets are evenly distributed around the column, and the upper ends of the pull rod brackets are hinged to the upper outer side of the column through hinges; the inner end of the pull rod scale is connected to the lower outer side of the column through a rotating shaft pair; the marking stamp is correspondingly arranged at the outer end of the pull rod scale.

2. The titanium alloy ingot precision sampling device according to claim 1, characterized in that: The lower end of the pull rod bracket is provided with a fixed shoe foot.

3. A titanium alloy ingot precision sampling device according to claim 2, characterized in that: A lock buckle is arranged on the outer side of the fixed hoof.

4. The titanium alloy ingot precision sampling device according to claim 3, characterized in that: The top ends of the upright posts are provided with knobs, which are respectively connected with hinges and are used to control the opening and closing of the pull rod brackets.

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