Inquiry card and query method for chemical components of metal and alloy thereof

Abstract

The invention discloses a query card and query method for chemical components of metal and alloy thereof, and the query card comprises a query unit which comprises an outer sleeve assembly used for recording the national standard mark of the metal and alloy thereof, and an inner sleeve assembly which is inserted in the outer sleeve assembly in a sliding manner and is used for indicating the chemical components corresponding to the metal and alloy thereof; and the switching unit comprises a picking assembly used for bearing and switching different metals and alloys thereof corresponding to the jacket assembly, and a storage assembly arranged on the outer side of the picking assembly and used for containing the picking assembly. The metal is rotated to correspond to the query port through the edge block, so that the name of the metal needing to be queried can still be quickly called out on the premise of ensuring that the upper cover plate seals and limits the pull blocks corresponding to various metals; therefore, in the process that chemical components of various different types of metals and alloy materials thereof need to be inquired in the same time period, various metals with different names can be quickly called out, and the retrieval efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of metal and alloy chemical composition query, in particular to a metal and alloy chemical composition query card and a query method. Background Art

[0002] Various metals and their alloy materials have different unique properties and are of great development, research and use value in various fields of human society. They are the cornerstone of human society. Therefore, there are many related research and applications to meet the continuous needs of human society. Since a small fluctuation in the content of metal components can have a great impact on the properties of metals, there are many metal and alloy grades for distinction. With the daily increase in the types of metal and alloy materials, problems such as difficulty in distinguishing the chemical composition of metals and alloys and inconvenience in querying have emerged;

[0003] At present, relevant researchers lack a way to directly query the chemical composition of various metals and their alloy materials. They need to search gradually through the Internet and literature. The search results are often messy and inaccurate. At the same time, if relevant comparisons are to be made, multiple searches are required, which greatly increases the operation time and makes data comparison difficult. Therefore, the existing method of querying chemical composition takes a long time to operate, has a large workload, often results in false detection and misjudgment, is difficult to compare, and cannot meet current needs. In addition, when the chemical composition of multiple different types of metals and their alloy materials needs to be queried in the same time period, multiple metals with different names cannot be quickly retrieved, and the retrieval efficiency is low.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are the closest prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a metal and alloy chemical composition query card and query method, so as to solve the problem that the existing method of querying chemical composition proposed in the above background technology has a long operation time, a large workload, often has false detection and misjudgment, is not easy to compare, and cannot meet current needs. In addition, in the process of querying the chemical composition of multiple different types of metals and their alloy materials in the same time period, it is impossible to quickly call out multiple metals with different names, resulting in low retrieval efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A metal and alloy chemical composition query card, comprising:

[0008] The query unit comprises an outer sleeve component for recording the national standard grade of the metal and its alloy, and an inner sleeve component slidably inserted in the outer sleeve component for indicating the chemical composition corresponding to the metal and its alloy;

[0009] The switching unit comprises a selection component for carrying and switching different metals and alloys thereof corresponding to the outer sleeve component, and a storage component arranged outside the selection component for accommodating the selection component.

[0010] Furthermore, the outer jacket assembly includes:

[0011] An outer ruler sleeve, wherein a guide groove is provided inside the outer ruler sleeve from top to bottom to guide the movement of the inner sleeve assembly;

[0012] The instruction column is located at the upper front end of the outer ruler sleeve;

[0013] A chemical composition name table, located at the front end of the outer ruler sleeve and below the instruction column;

[0014] A chemical composition query window is provided at the front end of the outer ruler sleeve and below the chemical composition name table, and is used to display the data of the chemical composition content of the metal and its alloy corresponding to the inner sleeve component;

[0015] An arrow indicating window is provided at the front end of the outer ruler sleeve and is located in the middle below the chemical composition query window;

[0016] The national standard grade table for metals and their alloys is arranged at the front end of the outer ruler sleeve and located on both sides of the arrow indication window.

[0017] Furthermore, the inner sleeve assembly comprises:

[0018] An inner slide ruler is inserted into the guide groove by sliding up and down;

[0019] A receiving groove, provided at the front end of the inner slide and corresponding to the arrow indicating window;

[0020] Indicator arrows, two groups of which are arranged in the receiving groove and point in opposite directions, are used to point to the corresponding grades recorded in the national standard grade table of metals and their alloys. The width of the arrow indicator window is consistent with the length of the indicator arrow, and is used to display the position of the indicator arrow;

[0021] The metal and alloy chemical composition content data table is arranged at the front end of the inner slide and located on both sides of the containing groove.

[0022] Furthermore, the width of the data table of chemical composition content of metals and their alloys is consistent with the width of the chemical composition query window and the data position corresponds to the chemical name in the chemical composition name table.

[0023] Furthermore, a retreat groove is provided at the lower side of one side of the inner slide;

[0024] A card block is slidably inserted in the retreat groove, and both the card block and the retreat groove are U-shaped, with one end of the card block located above the plane where the lower end of the outer ruler sleeve is located, and the other end of the card block located below the plane where the lower end of the outer ruler sleeve is located;

[0025] One end of the clamping block located below the outer ruler sleeve is fixedly connected to a pressing plate;

[0026] One end of the clamping block relative to the pressing plate extends to the inside of a clamping slot reserved in the outer ruler sleeve;

[0027] The tightening spring is sleeved on the outside of the clamping block and located on one side of the pressing plate, and is used to tighten the pressing plate;

[0028] The length of the inner sliding ruler is greater than the length of the outer ruler sleeve.

[0029] Further, the selection component includes:

[0030] An edge block is arranged inside the storage assembly, the edge block is provided with a plurality of edge faces, the rear end of the outer ruler sleeve is fixedly connected to the edge faces, and each edge face corresponds to an outer ruler sleeve recording the chemical composition of different metals and their alloys;

[0031] A rotating rod, which is fixedly inserted into the middle of the edge block from the upper end of the edge block, is used to rotate and adjust the edge block, and the rotating rod is T-shaped;

[0032] The convex blocks are fixedly connected at equal angles to the upper ends of the edge blocks and correspond one to one with the edge faces of the edge blocks, and are used to record the names of different metals corresponding to the edge faces.

[0033] Furthermore, the storage component includes:

[0034] A cylinder, arranged outside the edge block;

[0035] A round sleeve is fixedly connected to the middle of the lower end of the cylinder, and the middle of the lower end of the rotating rod is rotatably inserted into the inside of the round sleeve;

[0036] An inquiry port is arranged on the outer side of the cylinder;

[0037] An upper cover plate is arranged in the opening at the upper end of the cylinder and is used to limit the upper end of the inner slide. A groove is arranged at a position corresponding to the query port of the upper cover plate and is used to pull out the inner slide corresponding to the metal and its alloy to be queried.

[0038] A plurality of first through holes are provided on the upper end of the upper cover plate and correspond to the protrusions one by one, and are used to display the metal name recorded on the upper end of the protrusion;

[0039] A telescopic rod, fixedly connected to the middle of the lower end of the cylinder, for adjusting the height of the cylinder;

[0040] The base is fixedly connected to the lower end of the telescopic rod and is used to fix the lower end of the telescopic rod.

[0041] In addition, the present invention also provides a method for querying the chemical composition of metals and their alloys using a metal and their alloy chemical composition query card, comprising the following steps:

[0042] Step 1: determine the metal to be queried, find the position of the corresponding protrusion corresponding to the metal in the first through hole, rotate the rotating rod, and the rotating rod switches the metal to be queried to the query port through the edge block;

[0043] Step 2: Press down the pressing plate and pull the inner sliding ruler downward along the outer ruler sleeve so that the indicator arrow points to the material brand to be queried;

[0044] Step 3: Get the required data in the chemical composition query window.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. The present invention first determines the metal to be queried, then finds the position of the protrusion corresponding to the metal in the first through hole, rotates the rotating rod, and drives the protrusion to rotate to the first through hole corresponding to the query port through the edge block. At the same time, the edge block will also rotate the metal to correspond to the query port. Therefore, under the premise of ensuring that the upper cover plate seals and limits the pull blocks corresponding to the multiple metals, the name of the metal to be queried can still be quickly called out. Therefore, when the chemical compositions of multiple different types of metals and their alloy materials need to be queried in the same time period, metals of multiple different names can be quickly called out, and the retrieval efficiency is high.

[0047] 2. The present invention calls out the name of the metal to be queried, presses the pressure plate downward, compresses the tension spring and drives the card block to move along the retreat groove, so that one end of the card block is disengaged from the inside of the card block, and pulls the inner slide ruler downward along the inside of the outer ruler sleeve. The inner slide ruler drives the indicating arrow to move relative to the arrow indicating window, so that the indicating arrow points to the corresponding grade of the material to be queried in the metal and its alloy national standard grade table. At this time, the data in the metal and its alloy chemical composition content data table displayed in the chemical composition query window is the data to be obtained, the query result is highly accurate, and it is convenient to compare the queried data.

[0048] 3. The present invention presses down the pressing plate again after each query of the chemical composition of the metal and its alloy material to be queried is completed. The pressing plate compresses the tightening spring and drives the card block to move completely into the retreat groove, pushes the inner slide ruler upward to the initial position along the outer ruler sleeve, and releases the pressing plate. At this time, the tightening spring drives the card block into the card groove through the elastic force of the pressing plate, so that the inner slide ruler is locked inside the outer ruler sleeve, thereby preventing the inner slide ruler from detaching from the outer ruler sleeve when different metals are called later, thereby improving the reliability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0050] Figure 2 A diagram showing the coordination relationship between the storage unit and the selection unit of the present invention;

[0051] Figure 3 A schematic diagram of the unit structure is selected for the present invention;

[0052] Figure 4 The rotating rod and the round sleeve of the present invention;

[0053] Figure 5 This is a diagram showing the matching relationship between the outer sleeve component and the inner sleeve component of the present invention;

[0054] Figure 6 It is a schematic diagram of the structure of the jacket assembly of the present invention;

[0055] Figure 7 This is a schematic diagram of the structure of the inner sleeve assembly of the present invention;

[0056] Figure 8 It is a schematic diagram of the structure of the inner sliding ruler of the present invention being clamped inside the outer ruler sleeve;

[0057] Fig. 9 For the present invention Figure 8 The enlarged view of point A in the middle;

[0058] Fig.10 It is a schematic diagram of the outer sleeve assembly corresponding to titanium and its alloys of the present invention;

[0059] Fig.11 It is a schematic diagram of the inner sleeve component corresponding to titanium and its alloys of the present invention.

[0060] Reference numerals: 1, switching unit; 11, storage assembly; 111, cylinder; 112, upper cover; 1121, groove; 113, first through hole; 114, second through hole; 115, query port; 116, telescopic rod; 117, base; 12, selection assembly; 121, edge block; 122, convex block; 123, rotating rod; 124, round sleeve; 2, query unit; 21, outer sleeve assembly; 211, outer ruler sleeve; 2111, guide groove; 211 2. Card slot; 212. Instructions for use column; 213. Chemical composition name table; 214. Chemical composition query window; 215. National standard grade table for metals and their alloys; 216. Arrow indication window; 22. Inner sleeve assembly; 221. Inner slide; 2211. Retraction groove; 2212. Card block; 2213. Pressure plate; 2214. Tightening spring; 222. Data table of chemical composition content of metals and their alloys; 223. Receiving slot; 224. Indicator arrow. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] Embodiment 1

[0063] See also Figure 1-9 , the present invention provides a technical solution:

[0064] A metal and alloy chemical composition query card, comprising:

[0065] The query unit 2 comprises an outer sleeve component 21 for recording the national standard grade of the metal and its alloy, and an inner sleeve component 22 slidably inserted in the outer sleeve component 21 for indicating the chemical composition corresponding to the metal and its alloy;

[0066] The switching unit 1 comprises a selection component 12 for carrying and switching different metals and alloys thereof corresponding to the outer sleeve component 21 , and a storage component 11 arranged outside the selection component 12 for accommodating the selection component 12 .

[0067] As an improvement, Figure 3-6 As shown, the jacket assembly 21 includes:

[0068] An outer sleeve 211, wherein a guide groove 2111 is provided from top to bottom inside the outer sleeve 211 for guiding the movement of the inner sleeve assembly 22;

[0069] The instruction column 212 is disposed at the upper front end of the outer ruler sleeve 211;

[0070] A chemical composition name table 213 is provided at the front end of the outer ruler sleeve 211 and below the instruction column 212;

[0071] The chemical composition query window 214 is provided at the front end of the outer sleeve 211 and below the chemical composition name table 213, and is used to display the data of the chemical composition content of the metal and its alloy corresponding to the inner sleeve component 22;

[0072] An arrow indicating window 216 is provided at the front end of the outer ruler sleeve 211 and is located in the middle below the chemical composition query window 214;

[0073] The national standard grade table 215 for metals and their alloys is arranged at the front end of the outer ruler sleeve 211 and located on both sides of the arrow indication window 216 .

[0074] Further, such as Figure 5 , Figure 7 As shown, the inner sleeve assembly 22 includes:

[0075] The inner slide 221 is inserted into the guide groove 2111 by sliding up and down;

[0076] The receiving groove 223 is provided at the front end of the inner slide 221 and corresponds to the arrow indicating window 216;

[0077] Indicating arrows 224 are provided in two groups in the receiving groove 223 and point in opposite directions, and are used to point to the corresponding grades recorded in the national standard grade table 215 for metals and their alloys. The width of the arrow indicating window 216 is consistent with the length of the indicating arrow 224, and is used to display the position of the indicating arrow 224;

[0078] The metal and alloy chemical composition content data table 222 is disposed at the front end of the inner slide 221 and located on both sides of the receiving groove 223 .

[0079] Among them, Figure 8-9 As shown, the width of the metal and alloy chemical composition content data table 222 is consistent with the width of the chemical composition query window 214 and the data position corresponds to the chemical name of the chemical composition name table 213.

[0080] In addition, a retreat groove 2211 is provided at the lower side of the inner slide rule 221;

[0081] A block 2212 is slidably inserted into the retreat groove 2211. The block 2212 and the retreat groove 2211 are both U-shaped. One end of the block 2212 is located above the plane where the lower end of the outer ruler sleeve 211 is located, and the other end is located below the plane where the lower end of the outer ruler sleeve 211 is located.

[0082] One end of the clamping block 2212 located below the outer ruler sleeve 211 is fixedly connected to a pressing plate 2213;

[0083] One end of the clamping block 2212 opposite to the pressing plate 2213 extends to the inside of the clamping slot 2112 reserved in the outer ruler sleeve 211;

[0084] The tightening spring 2214 is sleeved on the outside of the clamping block 2212 and located on one side of the pressing plate 2213, and is used to tighten the pressing plate 2213;

[0085] The length of the inner sliding ruler 221 is greater than the length of the outer ruler sleeve 211 .

[0086] As an improvement, Figure 1-4 As shown, the selection component 12 includes:

[0087] The edge block 121 is disposed inside the storage assembly 11. The edge block 121 has a plurality of edge faces. The rear end of the outer ruler 211 is fixedly connected to the edge faces. Each edge face corresponds to the outer ruler 211 which records the chemical composition of different metals and their alloys.

[0088] A rotating rod 123, which is fixedly inserted into the middle of the edge block 121 from the upper end of the edge block 121, and is used to rotate and adjust the edge block 121. The rotating rod 123 is T-shaped;

[0089] The protrusions 122 are fixedly connected to the upper end of the edge block 121 at equal angles and correspond one to one with the edge faces of the edge block 121 , and are used to record the names of different metals corresponding to the edge faces.

[0090] Furthermore, the storage component 11 includes:

[0091] The cylinder 111 is arranged outside the edge block 121;

[0092] A round sleeve 124 is fixedly connected to the middle of the lower end of the cylinder 111, and the middle of the lower end of the rotating rod 123 is rotatably inserted into the inside of the round sleeve 124;

[0093] A query port 115 is provided on the outer side of the cylinder 111;

[0094] The upper cover plate 112 is disposed in the upper opening of the cylinder 111 and is used to limit the upper end of the inner slide 221. A groove 1121 is provided at the upper cover plate 112 corresponding to the query port 115, and is used to pull out the inner slide 221 corresponding to the metal and its alloy to be queried;

[0095] A second through hole 114 for penetrating the rotating rod 123 is provided inside the upper cover plate 112 and outside the rotating rod 123;

[0096] A plurality of first through holes 113 are provided on the upper end of the upper cover plate 112 and correspond one to one with the protrusions 122, and are used to display the metal name recorded on the upper end of the protrusion 122;

[0097] A telescopic rod 116 is fixedly connected to the middle of the lower end of the cylinder 111 and is used to adjust the height of the cylinder 111;

[0098] The base 117 is fixedly connected to the lower end of the telescopic rod 116 and is used to fix the lower end of the telescopic rod 116 .

[0099] It should be noted that: Figure 1-4 As shown, in the specific implementation process of the present invention, the metal to be queried is first determined, and then the position of the metal on the protrusion 122 is found in the first through hole 113, and the rotating rod 123 is rotated. The rotating rod 123 drives the protrusion 122 to rotate to the first through hole 113 corresponding to the query port 115 through the edge block 121. At the same time, the edge block 121 will also rotate the metal to correspond to the query port 115. Therefore, under the premise of ensuring that the upper cover plate 112 covers and protects the inner slide 221 corresponding to multiple metals, the name of the metal to be queried can still be quickly called out, so that when the chemical composition of multiple different types of metals and their alloy materials needs to be queried in the same time period, metals of multiple different names can be quickly called out, and the retrieval efficiency is high.

[0100] like Figure 5-7 As shown, after the metal name to be queried is called out, the pressing plate 2213 is pressed downward, and the pressing plate 2213 compresses the tightening spring 2214 and drives the clamping block 2212 to move along the retreat groove 2211, so that one end of the clamping block 2212 is disengaged from the inside of the clamping groove 2112, and the inner sliding ruler 221 is pulled downward along the inside of the outer ruler sleeve 211, and the inner sliding ruler 221 drives the indicating arrow 224 to move relative to the arrow indicating window 216, so that the indicating arrow 224 points to the corresponding grade of the material to be queried in the metal and its alloy national standard grade table 215. At this time, the data in the metal and its alloy chemical composition content data table 222 displayed in the chemical composition query window 214 is the data to be obtained, and the query result is highly accurate, which is convenient for comparing the queried data;

[0101] like Figure 8-9As shown, after the chemical composition of the metal and its alloy materials to be queried is completed each time, the present invention presses down the pressing plate 2213 again, and the pressing plate 2213 compresses the tightening spring 2214 and drives the block 2212 to move completely into the retreat groove 2211, and pushes the inner slide 221 to the initial position along the outer ruler sleeve 211, and releases the pressing plate 2213. At this time, the tightening spring 2214 drives the block 2212 to enter the groove 2112 through the elastic force of the pressing plate 2213, so that the inner slide 221 is locked in the outer ruler sleeve 211, thereby preventing the inner slide 221 from detaching from the outer ruler sleeve 211 when different metals are called later, thereby improving the reliability of the overall structure.

[0102] Embodiment 2

[0103] like Figure 1-11 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0104] A method for querying the chemical composition of metals and their alloys using a metal and their alloy chemical composition query card comprises the following steps:

[0105] Step 1: determine the metal to be queried, find the position of the corresponding protrusion 122 corresponding to the metal in the first through hole 113, rotate the rotating rod 123, and the rotating rod 123 switches the metal to be queried to the query port 115 through the edge block 121;

[0106] Step 2: Press down the pressing plate 2213 and pull the inner sliding ruler 221 downward along the outer ruler sleeve 211 so that the indicating arrow 224 points to the material brand to be queried;

[0107] Step 3: Obtain the required data in the chemical composition query window 214.

[0108] It should be noted that if Figure 10-11 As shown, the present invention takes the query steps of the titanium and titanium alloy chemical composition query card as an example. The titanium and titanium alloy chemical composition query card corresponds to the outer ruler 211, and the corresponding area at the chemical composition name table 213 lists the names of common chemical elements commonly contained in titanium and titanium alloys (GB / T 3620.1-2016); the national standard grade table of metals and their alloys 215 lists the national standard grades of titanium and titanium alloys (GB / T 3620.1-2016), and the outer ruler 211 is provided with a chemical composition query window 214 and an arrow indication window 216. The inner slide 221 of the titanium and titanium alloy chemical composition query card and the metal and alloy chemical composition content data table 222 list the element composition content of titanium and titanium alloys (GB / T 3620.1-2016).

[0109] During the query, after determining that the metal to be queried is titanium, find the position of the corresponding protrusion 122 of titanium metal in the first through hole 113, rotate the rotating rod 123, and the rotating rod 123 switches the titanium metal to the query port 115 through the edge block 121, press down the pressure plate 2213 and pull the inner slide ruler 221 to move downward along the outer ruler sleeve 211, the indicator arrow 224 points to the material brand to be queried, and obtains the required data in the chemical composition query window 214, thereby realizing the ability to quickly locate the chemical composition content, greatly improving the query efficiency, and greatly reducing the phenomenon of false detection and misjudgment.

[0110] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0111] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal and alloy chemical composition query card, characterized in that: include: The query unit (2) comprises an outer sleeve component (21) for recording the national standard number of the metal and its alloy, and an inner sleeve component (22) slidably inserted in the outer sleeve component (21) for indicating the chemical composition corresponding to the metal and its alloy; The switching unit (1) comprises a selection component (12) for carrying and switching different metals and alloys thereof corresponding to a jacket component (21), and a storage component (11) arranged outside the selection component (12) for accommodating the selection component (12).

2. A metal and alloy chemical composition query card according to claim 1, characterized in that: The outer cover assembly (21) comprises: An outer ruler sleeve (211), wherein a guide groove (2111) is provided inside the outer ruler sleeve (211) from top to bottom, and is used to guide the movement of the inner sleeve assembly (22); An instruction column (212) is provided at the upper front end of the outer ruler sleeve (211); A chemical composition name table (213), arranged at the front end of the outer ruler (211) and below the instruction column (212); A chemical composition query window (214), arranged at the front end of the outer sleeve (211) and below the chemical composition name table (213), is used to display data on the chemical composition content of metals and their alloys corresponding to the inner sleeve component (22); An arrow indicating window (216) is provided at the front end of the outer ruler sleeve (211) and is located in the middle below the chemical composition query window (214); The national standard grade table (215) for metals and their alloys is arranged at the front end of the outer ruler sleeve (211) and located on both sides of the arrow indicating window (216).

3. A metal and alloy chemical composition query card according to claim 2, characterized in that: The inner sleeve assembly (22) comprises: An inner sliding ruler (221) is inserted into the guide groove (2111) for sliding up and down operation; A receiving groove (223) is provided at the front end of the inner slide ruler (221) and corresponds to the arrow indicating window (216); Indicating arrows (224), two groups of which are arranged in the containing groove (223) and point in opposite directions, are used to point to the corresponding grades recorded in the national standard grade table (215) of metals and their alloys; the width of the arrow indicating window (216) is consistent with the length of the indicating arrow (224), and is used to display the position of the indicating arrow (224); The metal and alloy chemical composition content data table (222) is arranged at the front end of the inner slide (221) and located on both sides of the containing groove (223).

4. A metal and alloy chemical composition query card according to claim 3, characterized in that: The width of the metal and alloy chemical composition content data table (222) is consistent with the width of the chemical composition query window (214), and the data position corresponds to the chemical name of the chemical composition name table (213).

5. A metal and alloy chemical composition query card according to claim 3, characterized in that: A retreat groove (2211) is provided at the lower side of the inner sliding ruler (221); A clamping block (2212) is slidably inserted into the retreat groove (2211), and the clamping block (2212) and the retreat groove (2211) are both U-shaped, with one end of the clamping block (2212) located above the plane where the lower end of the outer ruler sleeve (211) is located, and the other end of the clamping block (2212) is located below the plane where the lower end of the outer ruler sleeve (211) is located; One end of the clamping block (2212) located below the outer ruler sleeve (211) is fixedly connected to a pressing plate (2213); One end of the clamping block (2212) opposite to the pressing plate (2213) extends into a clamping slot (2112) reserved in the outer ruler sleeve (211); The tightening spring (2214) is sleeved on the outside of the clamping block (2212) and is located on one side of the pressing plate (2213), and is used to tighten the pressing plate (2213); The length of the inner sliding ruler (221) is greater than the length of the outer ruler sleeve (211).

6. A metal and alloy chemical composition query card according to claim 2, characterized in that: The selection component (12) comprises: An edge block (121) is arranged inside the storage assembly (11), the edge block (121) is provided with a plurality of edge faces, the rear end of the outer ruler sleeve (211) is fixedly connected to the edge faces, and each edge face corresponds to the outer ruler sleeve (211) recording the chemical composition of different metals and their alloys; A rotating rod (123) is fixedly inserted into the middle of the edge block (121) from the upper end of the edge block (121) and is used to rotate and adjust the edge block (121). The rotating rod (123) is T-shaped; The convex block (122) is fixedly connected to the upper end of the edge block (121) at an equal angle and corresponds one to one with the edge faces of the edge block (121), and is used to record the names of different metals corresponding to the edge faces.

7. A metal and alloy chemical composition query card according to claim 6, characterized in that: The storage component (11) comprises: A cylinder (111) is arranged outside the edge block (121); A circular sleeve (124) is fixedly connected to the middle of the lower end of the cylinder (111), and the middle of the lower end of the rotating rod (123) is rotatably inserted into the inside of the circular sleeve (124); A query port (115) is provided on the outside of the cylinder (111); An upper cover plate (112) is arranged in the upper opening of the cylinder (111) and is used to limit the upper end of the inner slide ruler (221). A groove (1121) is provided at a position corresponding to the upper cover plate (112) and the query opening (115) and is used to pull out the inner slide ruler (221) corresponding to the metal and its alloy to be queried; A plurality of first through holes (113) are provided on the upper end of the upper cover plate (112) and correspond one-to-one to the protrusions (122), and are used to display the metal name recorded on the upper end of the protrusion (122); A telescopic rod (116) is fixedly connected to the middle of the lower end of the cylinder (111) and is used to adjust the height of the cylinder (111); The base (117) is fixedly connected to the lower end of the telescopic rod (116) and is used to fix the lower end of the telescopic rod (116).

8. A method for querying the chemical composition of metals and their alloys using a metal and their alloy chemical composition query card according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: determine the metal to be queried, find the position of the corresponding protrusion (122) corresponding to the metal in the first through hole (113), rotate the rotating rod (123), and the rotating rod (123) switches the metal to be queried to the query port (115) through the edge block (121); Step 2: Press down the pressing plate (2213) and pull the inner sliding ruler (221) downward along the outer ruler sleeve (211) so that the indicating arrow (224) points to the material brand to be queried; Step 3: Obtain the required data in the chemical composition query window (214).

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