JP2015049234A - Collecting jig for molten metal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a collecting jig for accurately measuring the quality of molten metal by a position in a melting pot, which is required for manufacturing a magnesium alloy having a long period laminated structure in a large melting pot.SOLUTION: A collecting jig 1 includes: a single or a plurality of storage containers 3 which respectively have inner spaces 32 and opening portions 31; a supporting member 2 for supporting the storage container 3 and capable of moving and setting a position of the storage container 3; an insertion member 4 filling the inner space 32 and closing the opening portion 31; an insertion supporting member 41 which can attach/detach the insertion member 4 to/from the inner space 32; and a cover for closing the opening portion 31 while a space margin is left in the inner space 32 of the storage container 3.

Description

  The present invention relates to a collecting jig for collecting molten metal accommodated in a melting pot when a plurality of metals as raw materials are melted to produce an alloy.

  Various metal materials are used to form a casing in various applications such as electrical products, transportation equipment such as automobiles and airplanes, precision equipment, and manufacturing machines. Such housings for various applications are not only made of a single metal material such as iron or aluminum, but various alloy materials are increasingly used.

  For example, in electrical products and transportation equipment, alloy materials are sometimes used for the purpose of weight reduction. In precision instruments and manufacturing machines, alloy materials are sometimes used for the purpose of improving durability and strength. As described above, various alloy materials have come to be used in applications where conventional single metal materials are used and components of the applications. In particular, the ease of use is required in the field of electrical products, and low fuel consumption is required in the field of transportation equipment. Therefore, alloy materials that are lightweight but have excellent durability and strength are components of these applications. It has been increasingly used for.

  In recent years, a magnesium alloy having a long-period laminated structure has been proposed as an alloy material that is lightweight and excellent in durability and strength (see, for example, Patent Document 1).

  A magnesium alloy having a long-period laminate structure disclosed in Patent Document 1 (hereinafter referred to as a long-period laminate structure magnesium alloy) uses yttrium (atomic symbol “Y”) in addition to magnesium and zinc as a raw material for producing the alloy. Used for one. This long-period laminated magnesium alloy can have much higher durability and strength than the conventional magnesium alloy while being light like the conventional magnesium alloy. For this reason, application to various applications such as the above-described electrical products, transportation equipment, precision equipment, and the like that are required to satisfy both lightness and strength is desired.

  The long-period laminated structure magnesium alloy is obtained by putting these magnesium, zinc, and yttrium into a melting pot, melting them, and homogenizing them with stirring or the like. At this time, after melting and homogenization in the melting pot, the inclusions are removed, and then a long-period laminated structure magnesium alloy ingot is manufactured by cooling.

  In manufacturing using this melting pot, naturally, manufacturing with a large capacity melting pot is efficient in terms of manufacturing cost and manufacturing process reduction. However, among the above three types of raw materials for producing a long-period laminated structure magnesium alloy, yttrium has a high (1) specific gravity and tends to segregate at the bottom of the melting pot even after melting and stirring in the melting pot. (2) When exposed to air, it is easily oxidized and yttrium oxide is easily generated. In addition, this yttrium oxide also has a problem that it is difficult to know where the molten metal in the molten kettle moves due to the specific gravity. These problems are likely to occur as more severe problems if the melting pot is large.

  With the above problems caused by yttrium being left, a long-period laminated structure magnesium having uniform components as a whole even if the ingot is obtained by cooling in the process after melting and stirring the raw material in a large melting kettle It is difficult to get an alloy. The larger the melting pot is, the more difficult it is to produce a long-period laminated magnesium alloy having a uniform component, and the production cost of the long-period laminated magnesium alloy cannot be reduced, making it difficult to apply to various applications. turn into. This is because if the manufacturing cost is high, the unit price of the long-period laminated structure magnesium alloy naturally increases, and it becomes difficult to apply in various applications where the member cost must be reduced.

  Conversely, if the melting pot is made large in order to lower the manufacturing cost, that is, the unit price of the long-period laminated structure magnesium alloy, there is a possibility that the long-period laminated structure magnesium alloy with low uniformity as described above may be obtained. If the uniformity is low, there is a possibility that the compatibility between the light weight and the strength cannot be realized in the component part of the applied application.

  In this way, it is a long-period laminated structure magnesium alloy that is excellent in both lightness and strength, but it can reduce the manufacturing cost by manufacturing molten metal for alloy production with high uniformity using a large melting pot. Is required.

  As a pre-stage for realizing a highly uniform production in such a large melting pot, the molten metal melted and stirred in the melting pot is in various positions in the vertical direction and in various positions in the plane direction. It is required to check the segregation of the molten metal at the internal position of the melting pot in advance. In the long-period laminated magnesium alloy, it is particularly important that the behavior of yttrium (or yttrium oxide) in the molten metal is grasped as described above. It is appropriate that the segregation of yttrium and yttrium oxide in the vertical direction or the planar direction of the melting pot is examined in the molten and stirred state. By confirming the behavior such as the segregation of yttrium and yttrium oxide that differ depending on the position inside the molten metal, the capacity, shape, or Necessary requirements for the melting process and the stirring process can be understood.

  If such a requirement is known, a large amount of long-period laminated structure magnesium alloy can be produced at a time by a large melting pot.

  Although it is not directly related to the long-period laminated structure magnesium alloy, there is a technique about a jig that collects the molten metal contained in the melting pot when the alloy as a raw material is melted and stirred in the melting pot. It has been proposed (see, for example, Patent Document 2, Patent Document 3, and Patent Document 4). If the molten metal in the melting pot is collected, the state of the molten metal in the melting pot can be confirmed as described above.

No. 2005-52203 Japanese Utility Model Publication No. 6-51868 Japanese Patent Laid-Open No. 2000-221184 JP-A-8-21832

  Patent Document 2 discloses a sampling jig including a container having an internal space and a lid corresponding to the container. The sampling jig disclosed in Patent Document 2 is put into a molten metal accommodated in a melting pot in a state where a container is covered. After the extraction jig is put into the molten metal, the lid is opened at the position where the extraction is desired, and the molten metal enters the internal space of the container. Thereafter, the extraction jig is taken out from the melting pot, and the molten metal at a desired position of the melting pot is taken out as a sample. Thus, the sampling jig disclosed in Patent Document 2 can sample the molten metal at a predetermined position of the melting pot.

  However, since the sampling jig disclosed in Patent Document 2 is introduced into the molten metal with a lid fitted to a container having an internal space, the lightness of the air in the internal space allows smooth entry into the molten metal. It has a problem that is difficult to throw in. This difficulty creates a problem that makes it difficult to accurately reach the container at the desired position. As a result, there is a problem that the molten metal cannot be collected at an accurate position.

  In addition, the internal space containing the air will be opened after being introduced into the molten metal (by opening the container lid). If the internal space is opened, the air in the internal space is released inside the molten metal. If air is released, there is a problem that the surrounding molten metal is oxidized and the quality of the original molten metal is changed. Of course, a molten metal different from the original quality of the molten metal is collected, and the behavior of the molten metal in the melting pot cannot be confirmed accurately. In particular, the long-period laminated structure magnesium alloy contains yttrium, but as described above, this yttrium has a characteristic of being easily oxidized. In the sampling jig of Patent Document 2, the molten metal is collected after oxidizing yttrium in the molten metal, the accuracy of analysis of the collected molten metal is lowered, and the quality of the molten metal is also adversely affected. I will give it.

  Patent Document 3 discloses a sampling jig including a storage unit that collects and stores molten metal and an exhaust pipe that exhausts gas inside the storage unit. In the sampling jig disclosed in Patent Document 3, the molten metal is accommodated in the accommodating portion while the gas is extracted from the exhaust pipe after the accommodating portion is put into the molten metal. In this manner, the sampling jig disclosed in Patent Document 3 can sample the molten metal at a desired position of the melting pot.

  However, the sampling jig disclosed in Patent Document 3 contains gas (gas) in the internal space of the housing portion as in Patent Document 2, and the buoyancy due to the gas has an effect when thrown into the molten metal. Thus, there is a problem that it cannot be accurately put into a desired position.

  In addition, the container is filled with gas, and unlike the air as in Patent Document 2, an attempt is made to solve problems such as oxidation. It causes changes in quality and chemical properties of metals. That is, the molten metal collected by the collection jig is not in the same situation as the molten metal at the collection position of the melting pot. For this reason, there exists a problem which cannot measure the quality of the exact molten metal etc. in the collection position of a melting pot.

  In addition, if the type of gas is set to an inert gas or an attempt to increase the exhaust accuracy by the exhaust pipe so as not to cause a quality change or chemical change of the molten metal, the extraction jig is not only expensive. The skill level in the work process using the sampling jig is also required. For this reason, eventually, it also leads to the problem that the cost of manufacturing the alloy in the melting pot cannot be reduced.

  Patent Document 4 discloses a sampling jig provided with a charging device and a suction container provided inside the charging device. The collection jig disclosed in Patent Document 4 collects molten metal by suction after being introduced into the molten metal.

  However, the extraction jig disclosed in Patent Document 4 forcibly sucks molten metal from below the charging position by using a charging device and a suction container charged into the molten metal. For this reason, the molten metal other than the charging position that is the sampling position (below or around it) may be sampled. For this reason, there is a problem that the state of the molten metal at the sampling position cannot be measured accurately.

  In addition, there is a problem that the container must be made disposable due to the suction, which increases the cost of the sampling jig. Furthermore, since the sampling jig disclosed in Patent Document 4 is a suction method, the inlet of the container for suction must be narrow. For this reason, it is necessary to transfer the collected molten metal from the collection jig to another container for measurement in a molten state. This transfer operation increases the cost of the measurement process. Of course, when transferring, if it touches air, it will oxidize and the quality of the original molten metal in the sampling position cannot be measured.

  As described above, the conventional sampling jigs represented by Patent Documents 2 to 4 have the following problems.

  (Problem 1) When collecting molten metal, it is not possible to accurately place a collection jig at a desired position.

  (Problem 2) Quality measurement is performed after the quality of the collected molten metal has been changed by contact with air or gas. This results in an inaccurate measurement.

  (Problem 3) Due to contact with air or gas, the quality of the molten metal that is not collected but remains in the melting pot is changed, and in manufacturing an alloy that is severe in quality change, the manufacturing is adversely affected.

  (Problem 4) Since the sampling jig becomes expensive or the skill of the sampling process is required, the manufacturing cost of the alloy is increased as a result.

  (Problem 5) Problems 1 to 4 are particularly problematic for a long-period laminated magnesium alloy that is greatly affected by yttrium quality changes. As a result, the premise for manufacturing the target long-period laminated structure magnesium alloy with high accuracy and low cost cannot be prepared. In particular, when the molten metal is collected inside the molten kettle, if it is exposed to air, the quality of yttrium that is easily oxidized is changed, and the original quality of the molten metal inside the molten kettle cannot be measured. 4

  The present invention solves such a problem, and the quality of the molten metal at an arbitrary position inside the melting pot necessary for producing an alloy, particularly, a long-period laminated magnesium alloy disclosed in Patent Document 1 with a large melting pot. An object of the present invention is to provide a sampling jig for accurately measuring the temperature.

  In view of the above-described problems, the molten metal sampling jig of the present invention includes one or a plurality of storage containers having an internal space and an opening, a support member that supports the storage container and can move and set the position of the storage container, An insertion member that fills the internal space and closes the opening; an insertion support member that can be attached to and detached from the internal space; and a lid that closes the opening while leaving a space in the internal space of the storage container. .

The sampling jig of the present invention can be accurately charged at a desired position (a vertical position and a planar position) in the melting pot. As a result, it is possible to reliably collect molten metal at various positions in the vertical direction or the planar direction.
Further, the sampling jig of the present invention does not cause a change in the quality of the molten metal to be collected between the sampling and the measurement after the sampling. As a result, the quality of the collected molten metal is accurately measured (as it is in the state at the collection position of the molten kettle).
Furthermore, the sampling jig of the present invention does not cause adverse effects such as quality changes to the molten metal remaining in the melting pot during sampling. In addition, the sampling jig can be made at a low cost and the sampling process does not require skill, so the sampling and measurement costs can be reduced. Combined with this, the manufacturing cost of the alloy can be reduced. The effects described above are particularly prominent in a long-period laminated structure magnesium alloy in which handling during manufacturing is delicate.

It is a side view of the melting pot explaining the reference technology of the present invention. It is a decomposition | disassembly schematic diagram of the extraction jig | tool in Embodiment 1 of this invention. It is a schematic diagram which shows mounting | wearing of the insertion member in the operation | work procedure by the collection jig | tool in Embodiment 1 of this invention. It is explanatory drawing which shows the insertion of the storage container of the procedure 2 in Embodiment 1 of this invention. It is explanatory drawing explaining the procedure 3 in the extraction | collection of the molten metal in Embodiment 1 of this invention. It is explanatory drawing which shows the procedure 4 in the extraction | collection of the molten metal in Embodiment 1 of this invention. It is explanatory drawing which shows the procedure 5 in the extraction | collection of the molten metal in Embodiment 1 of this invention. It is explanatory drawing which shows the procedure 6 which is the solidification operation | work of the extract | collected molten metal in Embodiment 1 of this invention. It is explanatory drawing which shows the procedure 7 with which the alloy extract | collected with the extraction jig | tool in Embodiment 1 of this invention and solidified is taken out. FIG. 10 is a front view of a sampling jig in Embodiment 2 of the present invention.

  A molten metal sampling jig according to a first aspect of the present invention includes one or a plurality of storage containers having an internal space and an opening, a support member that supports the storage container and is capable of moving and setting the position of the storage container. An insertion member that fills the internal space and closes the opening, an insertion support member that can be attached to and detached from the internal space, and a lid that closes the opening while leaving a space in the internal space of the storage container And comprising.

  With this configuration, the sampling jig can insert the container into the molten metal of the melting pot. In this charging, problems such as the influence of air and the collection of molten metal other than the target collection position are not caused.

  In the molten metal collecting jig according to the second invention of the present invention, in addition to the first invention, the support member inserts the containing container into the molten metal housed in the melting kettle, and further the support member. Sets the container at a desired sampling position inside the molten metal.

  With this configuration, the sampling jig can sample the molten metal at a desired sampling position of the molten metal inside the melting pot.

  In the molten metal sampling jig according to the third invention of the present invention, in addition to the second invention, the sampling position is determined by at least one coordinate in the vertical direction and the planar direction inside the molten metal, and the support member is It has a scale indicating the position in the vertical direction inside the molten metal.

  With this configuration, the collection jig can easily confirm the setting position of the storage container.

  In the molten metal sampling jig according to the fourth invention of the present invention, in addition to any of the first to third inventions, the side cross-sectional area at the top of the internal space is larger than the side cross-sectional area at the bottom of the internal space. .

  With this configuration, the container can easily collect the molten metal at the sampling position. In addition, after the collected molten metal is solidified, the solidified alloy can be easily taken out.

  In the molten metal sampling jig according to the fifth aspect of the present invention, in addition to any of the first to fourth aspects, the side sectional shape of the internal space is substantially circular or substantially elliptical.

  With this configuration, the container can easily collect the molten metal at the sampling position. In addition, since the collected and solidified alloy has a cylindrical shape, the quality and characteristics thereof can be easily measured.

  In the molten metal sampling jig according to the sixth invention of the present invention, in addition to any of the first to fifth inventions, the opening is provided in the upper part of the containing container, and the internal space is provided in the upper part. It is formed from the open part toward the bottom.

  With this configuration, when the insertion member is removed inside the melting pot, the storage container can easily store the molten metal in the internal space from the upper opening.

  In the molten metal sampling jig according to the seventh aspect of the present invention, in addition to any of the first to sixth aspects, the outer periphery of the bottom of the internal space has an R or a taper.

  With this configuration, after the molten metal accommodated in the container is solidified, the solidified alloy can be easily taken out. Moreover, the maintenance burden of the container can be reduced.

  In the molten metal sampling jig according to the eighth invention of the present invention, in addition to any of the first to seventh inventions, the insertion member substantially fills the internal space, and the internal space is made of the molten metal. A state of not communicating can be formed.

  With this configuration, when the storage container is charged into the molten metal, the internal space of the storage container does not contain air and does not affect the molten metal by air.

  In the molten metal sampling jig according to the ninth aspect of the present invention, in addition to any of the first to eighth aspects of the invention, the lid can substantially seal the opening while leaving the internal space. It is.

  With this configuration, the lid does not oxidize the collected molten metal until it is taken out and solidified after the molten metal is accommodated in the internal space of the container.

  In the molten metal sampling jig according to the tenth invention of the present invention, in addition to any of the first to ninth inventions, at least a part of the surface of the internal space, the surface of the insertion member, and the surface of the lid is separated. It has a coating layer of the mold.

  With this configuration, the solidified alloy can be easily taken out. In addition, repeated use of the container is facilitated.

  In the molten metal collecting jig according to the eleventh aspect of the present invention, in addition to any of the first to tenth aspects of the invention, in the state where the insertion member is inserted into the internal space, the containing container is placed inside the molten metal. In the collection position, the insertion member is taken out from the internal space, the molten metal in the collection position is accommodated in the internal space, the opening is closed by the lid, and the lid is closed. Is removed from the molten metal.

  With this configuration, the sampling jig does not affect the quality change of the molten metal in the melting pot, and the quality of the molten metal to be sampled can be changed during sampling while reliably collecting the molten metal at the sampling position. Absent.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  (Embodiment 1)

(Segregation of molten metal components in the melting pot)
First, the detail of the problem which arises in the step which melt | dissolves a required metal which is one of the processes which manufacture long-period seat layer structure magnesium, and produces | generates a molten metal is demonstrated. Various materials have been proposed as materials necessary for production of the long-period seat layered magnesium. Among the proposed materials, magnesium, zinc, and yttrium are considered to easily produce a long-period laminated structure.

  FIG. 1 is a side view of a melting pot illustrating a reference technique of the present invention. FIG. 1 shows a state in which a raw material charged into the melting pot 100 is a molten metal 101 that is melted by receiving predetermined heating. Magnesium, zinc, and yttrium are introduced into the melting pot 100 as raw materials so as to have a predetermined content. After these raw materials are charged, heat is applied to the melting pot 100.

  By applying heat to the melting pot 100, the raw material charged in the melting pot 100 is melted. By stirring after melting, the molten metal 101 is generated while the raw materials are uniformly mixed. The molten metal 101 is obtained by melting and mixing magnesium, zinc, and yttrium, which are raw materials that have been charged.

  The molten metal 101 inside the melting pot 100 is uniformly mixed and then solidifies when cooled through a predetermined process. The solidified state is an alloy in which a plurality of types of metal materials are mixed. By performing a predetermined process before and after this solidification, a long-period laminated structure magnesium alloy is obtained. Note that the details of the long-period laminated magnesium alloy are as disclosed in Patent Document 1, and are omitted in this specification.

  Here, similarly to a general alloy, a long-period laminated structure magnesium alloy needs to be mixed uniformly with each metal component as a raw material. It is because each metal component is not uniform but segregates, resulting in deterioration of performance and quality as an alloy. In particular, the molten metal 101 produced in the melting pot 100 is cooled to produce an alloy. If the mixing degree of each metal component is not uniform at the stage of the molten metal 101, the manufactured alloy itself will have non-uniform quality.

  If such an alloy itself is not uniform, there is a problem that the properties of the alloy itself (room temperature strength, high temperature strength, durability, workability, etc.) are insufficient. Or when the alloy of the magnitude | size obtained with the melting pot 100 is cut | disconnected or shape | molded to a required magnitude | size, the problem that the composition ratio changes with the site | parts used also arises. When these problems occur, the quality as an alloy cannot be guaranteed.

  The uniformity of each metal component contained in such an alloy is determined by the manufacturing process of the molten metal 101 in the melting pot 100. In the production of the molten metal 101 in the melting pot 100, sufficiently uniforming each metal component affects the quality of the finally produced alloy.

  Here, the long-period laminated structure magnesium alloy contains yttrium in one of its metal parts. Yttrium has a feature that it has a large specific gravity and is easily oxidized to yttrium oxide when exposed to air. For this reason, yttrium tends to segregate at the bottom of the molten metal 101 inside the melting pot 100 (each metal that is a necessary raw material is charged). The yttrium 202 in FIG. 1 is yttrium segregated near the bottom of the melting pot 100.

  On the other hand, the molten metal 101 inside the melting pot 100 is agitated. By this stirring, yttrium is also diffused inside the melting pot 100 from the bottom. However, even when diffusing, since the yttrium content is small, there is a high possibility that yttrium is segregated in the plane direction of the molten metal 101. The yttrium 203 in FIG. 1 is yttrium segregated in the plane direction.

  Further, as described above, yttrium is easily oxidized when exposed to air. For this reason, yttrium that has reached the vicinity of the surface of the molten metal 101 during melting or stirring in the melting pot 100 is changed to yttrium oxide. In FIG. 1, yttrium 201 indicates yttrium oxide.

  As described above, since the long-period laminated structure magnesium alloy has a characteristic of containing yttrium, in the melting pot 100, yttrium is segregated near the bottom surface (that is, in the vertical direction) or yttrium is present in the plane direction. There is a problem that segregation or yttrium oxide segregates near the surface. Even if the molten metal 101 in such a state is used to produce an alloy by cooling the molten metal 101, the quality of the obtained alloy is not uniform due to segregation or modification of yttrium (change to yttrium oxide). It leads to the problem of being insufficient or insufficient.

  On the other hand, manufacturing the molten metal 101 by making the melting pot 100 larger and manufacturing the alloy leads to a reduction in the manufacturing cost of the long-period laminated structure magnesium alloy. For this reason, in the molten metal 101 inside the melting pot 100, it is important to grasp in advance the segregation state of each metal component including yttrium in the vertical direction and the planar direction. If the segregation state is known, suggestions and references to stirring conditions and heating conditions can be obtained. Alternatively, after the alloy is manufactured, a reference can be obtained which is divided into a portion to be employed and a portion other than that while considering the yield.

  The sampling jig in Embodiment 1 can sample the molten metal 101 at various positions defined by the vertical direction and the planar direction inside the molten metal 101 inside the melting pot 100 shown in FIG. If the molten metal 101 at various positions inside the melting pot 100 is sampled by the sampling jig, the degree of segregation of each metal component inside the melting pot 100 can be confirmed. If the degree of segregation can be confirmed, the quality of the long-period laminated structure magnesium alloy finally obtained from the molten metal 101 of the melting pot 100 can be estimated. By estimating the quality, it becomes easy to grasp in advance the usable portion of the obtained magnesium alloy.

  Or it becomes easy to grasp the segregation characteristic of the molten metal 101 inside the melting pot 100 in advance. With this prior grasp, characteristics in various processes such as a stirring method of the molten metal 101 of the melting pot 100, a charging method of a metal material, and a heating method can be examined.

(Overview of sampling jig)
A general outline of the sampling jig will be described.

  FIG. 2 is an exploded schematic view of the sampling jig in Embodiment 1 of the present invention. The sampling jig 1 includes a plurality of units and is used by combining or dividing the plurality of units. The right side of FIG. 2 shows a unit including the container 3. The center of FIG. 2 shows a unit having a lid 5. The left side of FIG. 2 shows a unit including the insertion member 4.

  The sampling jig 1 includes one or a plurality of storage containers 3, a support member 2, an insertion member 4, an insertion support member 41, and a lid 5. FIG. 2 shows a form in which the sampling jig 1 includes a single container 3. Since the collection jig 1 has these configurations, the container 3 can be inserted into the molten metal 101 of the melting pot 100 as shown in FIG.

  The container 3 has an internal space 32 and an opening 31. That is, the molten metal can enter the internal space 32 from the opening 31. The support member 2 supports the storage container 3. As shown in FIG. 2, the support member 2 is a rod-like or strut-like member, and supports the container 3 by being connected to a part thereof. At this time, the container 3 may be configured such that the connecting position thereof can be changed in the support member 2.

  Since the container 3 has the internal space 32, the molten metal 101 can be collected by being inserted into the melting pot 100. The collection jig 1 implements the work of collecting the molten metal 101 using the container 3.

  The support member 2 can insert the storage container 3 into the melting pot 100 in a state in which the storage container 3 is connected and supported. In addition, the support member 2 can move and set the position of the storage container 3 inside the melting pot 100 (set to a certain position). That is, the support member 2 plays a functional role such as charging into the melting pot 100 and setting the position in addition to the structural role of connecting and supporting the container 3.

  The insertion member 4 is detachably inserted into the internal space 32 of the storage container 3. By inserting the insertion member 4 into the internal space 32 of the container 3, the internal space 32 is closed. In particular, since the insertion member 4 can substantially fill the internal space 32, the insertion member 4 can block the internal space 32 of the storage container 3 from the outside. In addition, since the upper frame 42 is provided on the upper portion of the insertion member 4, the upper portion is sealed when the insertion member 4 is inserted into the internal space 32. By this sealing, the internal space 32 can be reliably blocked from the outside.

  When the storage container 3 is inserted into the molten metal 101 of the melting pot 100 by the support member 2, the insertion member 4 is inserted (attached) into the internal space 32 of the storage container 3. . Here, an insertion support member 41 is connected to the insertion member 4. The insertion member 4 is connected to the distal end of the insertion support member 41.

  With this configuration, when the storage container 3 is inserted into the molten metal 101 by the support member 2, the insertion support member 41 inserts the insertion member 4 into the internal space 32 of the storage container 3. In this manner, when the insertion support member 41 inserts the insertion member 4 into the internal space 32 of the storage container 3, the storage container 3 is inserted into the molten metal 101, so that no air enters the internal space 32. Alternatively, until the container 3 is installed at a target position inside the melting pot 100, the molten metal 101 other than the target position does not enter the internal space 32.

  The container 3 can collect only the molten metal 101 other than the target position in the melting pot 100 by attaching / detaching the insertion member 4 and the insertion member 4 to / from the internal space 32. When the container 3 collects the molten metal 101, the inserted insertion member 4 is removed. By removing the insertion member 4, the container 3 exposes the internal space 32 inside the molten metal 101. By exposing the internal space 32, the container 3 can collect the molten metal 101 in the internal space 32.

  The lid 5 closes the opening 31 while leaving a space in the internal space 32. Unlike the insertion member 4, the lid 5 closes only the opening 31 while leaving a space for the internal space 32. For this reason, the opening 31 can be sealed in a state where the molten metal 101 is collected in the internal space 32. By sealing the opening 31, the lid 5 does not allow the molten metal 101 collected in the internal space 32 to come into contact with air. In order to set the lid 5 in the opening 31, the lid 5 is provided with a working lid support member 51. The operator handles the lid support member 51 and attaches the lid 5 to the opening 31.

  The collection jig 1 in Embodiment 1 has the above elements. Here, as shown in FIG. 2, the molten metal 101 in the melting pot 100 can be collected by appropriately combining a plurality of units including the respective elements.

(Work procedure)
Next, sampling of the molten metal 101 inside the melting pot 100 using the sampling jig 1 will be described.

(Procedure 1)
FIG. 3 is a schematic diagram showing the mounting of the insertion member in the work procedure by the sampling jig in the first embodiment of the present invention. First, the insertion member 4 is inserted into the internal space 32 of the storage container 3 attached to the support member 2. In this insertion and mounting, the operator may insert the insertion member 4 into the internal space 32 using the insertion support member 41.

  Further, since the upper frame 42 is provided on the upper portion of the insertion member 4, the upper frame 42 closes the opening 31 of the storage container 3. In addition, as shown in FIG. 3, the insertion member 4 has a shape and a size that can substantially fill the internal space 32. For this reason, the internal space 32 is sealed by the insertion member 4 and the upper frame 42 so that there is almost no communication with the outside. That is, the internal space 32 is blocked from the outside.

  By this blockage, the internal space 32 is in a state where excess air does not enter. Since the air does not enter, the internal space 32 is not affected by the air. That is, the internal space 32 can generate an independent state from the outside world. As a result, the internal space 32 can be charged into the melting pot 100 without being affected by the outside world (especially air).

(Procedure 2)
Subsequent to the procedure 1, in the procedure 2, the operator inserts the container 3 with the insertion member 4 attached into the molten metal 101 of the melting pot 100. FIG. 4 is an explanatory diagram showing charging of the storage container in step 2 according to Embodiment 1 of the present invention.

  In the procedure 1 of FIG. 3, the internal space 32 of the container 3 is filled with the insertion member 4. By this filling, the internal space 32 is charged to the target position of the melting pot 100 without being affected by air and without inserting the molten metal 101 other than the target position. This target position is a sampling position 110 where the sampling jig 1 samples the molten metal 101. The sampling position 110 is determined by at least one of the coordinates in the vertical direction and the planar direction inside the melting pot 100 (in other words, inside the molten metal 101).

  An operator installs the storage container 3 at a sampling position 110 determined by at least one of the coordinates in the vertical direction and the planar direction inside the melting pot 100, which is a target position for which sampling is desired. Here, the operator holds the support member 2 and the insertion support member 41 and installs the container 3 at the collection position 110.

  Here, as shown in FIG. 4, the support member 2 is provided with a scale 21. The operator can set the container 3 at the target sampling position 110 using the scale 21. Since the molten metal 101 is not transparent, the operator can set the storage container 3 at the sampling position 21 in the correct depth direction by having the scale 21.

  In FIG. 4, the sampling position 110 is near the center of the molten metal 101 inside the melting pot 100 in the vertical direction, and is on the right corner side in the planar direction. By appropriately changing the collection position 110, the collection jig 1 can collect the molten metal 101 at various positions of the melting pot 100 in the internal space 32 of the container 3.

(Procedure 3)
FIG. 5 is an explanatory diagram for explaining the procedure 3 in collecting molten metal in the first embodiment of the present invention. In step 2, the insertion member 4 is extracted from the storage container 3 set at a desired collection position 110. At this time, the operator pulls the insertion support member 41 to remove the insertion member 4 from the internal space 32.

  If the insertion member 4 is removed from the internal space 32, the internal space 32 is naturally exposed inside the molten metal 101. With this exposure, the molten metal at the sampling position 110 enters the internal space 32. In other words, the container 3 can collect the molten metal at the collection position 110.

  An arrow X in FIG. 5 indicates a direction in which the container 3 takes the molten metal 101 into the internal space 32 at the collection position 110. As described above, the container 3 can collect the molten metal 101 at the collection position 110 installed in the procedure 2. At this time, the insertion member 4 is filled in the internal space 32 until the receiving container 3 reaches the collection position 110. For this reason, air does not enter the internal space 32 outside until the molten metal 101 is charged. For this reason, when the molten metal 101 is collected at the collection position 110, there is little fear of oxidizing the molten metal 101 at the collection position 110.

  Further, even after the storage container 3 is inserted into the molten metal 101, the internal space 32 is filled with the insertion member 4 until the collection position 110 is reached. That is, the internal space 32 does not communicate with the molten metal 101 while the internal space 32 is filled with the insertion member 4. In other words, the molten metal 101 does not enter the internal space 32 while the insertion member 4 is filled.

  In this way, the filling with the insertion member 4 can prevent oxidation and also reduce the problem of collecting the molten metal 101 other than the sampling position 110. Thus, the container 3 can accurately collect the molten metal 101 at the collection position 110 in the internal space 32 thereof.

(Procedure 4)
Following step 3, step 4 is performed. FIG. 6 is an explanatory diagram showing a procedure 4 in collecting molten metal in the first embodiment of the present invention. In the procedure 3, the molten metal 101 </ b> A at the collection position 110 is accommodated in the internal space 32 of the storage container 3.

  In procedure 4, the lid 5 is installed in the opening 31. The operator uses the lid support member 51 to install the lid 5 in the opening 31 of the storage container 3. The lid 5 can substantially seal only the opening 31 while leaving the internal space 32. That is, the internal space 32 of the storage container 3 can be shielded from the outside.

  As shown in FIG. 6, the molten metal 101 </ b> A collected at the collection position 110 is accommodated in the internal space 32 by the lid 5. Since the molten metal 101 </ b> A is blocked from the outside by the lid 5, the molten metal 101 from other positions does not enter the internal space 32. As a result, only the molten metal 101 </ b> A sampled and stored at the sampling position 110 is stored in the internal space 32 of the storage container 3.

  As described above, when the container 3 is inserted into the melting pot 100, it is filled with the insertion member 4 so as not to take in air or molten metal other than the sampling position 110, and the container 3 is taken out from the melting pot 100. In this case, the quality of the molten metal 101A accommodated by the lid 5 can be maintained.

  As described above, the sampling jig 1 can mix the filling of the internal space 32 with the insertion member 4 and the holding of the internal space 32 with the lid 5 without changing the quality of the molten metal 101A at the sampling position 110. Only the molten metal 101A can be collected.

(Procedure 5)
Following procedure 4, procedure 5 is performed. FIG. 7 is an explanatory diagram showing a procedure 5 in collecting molten metal in the first embodiment of the present invention. In step 5, the storage container 3 with the lid 5 is taken out from the melting pot 100 in a state where the molten metal 101 </ b> A is stored in the internal space 32.

  The operator uses the support member 2 and the lid support member 51 to take out the storage container 3 from the melting pot 100 in a state where the opening 31 is sealed with the lid 5. In the internal space 32 of the storage container 3, the molten metal 101 </ b> A collected at the collection position 110 is stored.

  When the storage container 3 is taken out from the melting pot 100, the storage container 3 is exposed to the outside. However, the internal space 32 is sealed by the lid 5. For this reason, the molten metal 101A accommodated in the internal space 32 does not change its quality. In particular, even when the container 3 is taken out from the melting pot 100, the molten metal 101A in the internal space 32 is hardly oxidized. For this reason, the problem that the quality of the molten metal 101A changes hardly occurs.

  Here, when the lid 31 is covered with the lid support member 51 so that the lid 5 does not come off the opening 31, it is also preferable that the lid 5 and the opening 31 are fitted. For example, a fitting tooth is provided, and the lid 5 is fixed to the opening 31 by engaging the tooth. If the lid 5 is fixed to the opening 31 in this way, there is no risk that the lid 5 will be removed and the molten metal 101A in the internal space 32 will be oxidized when the container 3 is taken out from the melting pot 100. It is.

  In this way, the sampling jig 1 can sample the molten metal 101A at the desired sampling position 110 from the melting pot 100 without changing its quality.

(Procedure 6)
The molten metal 101A collected by the procedure 5 is still in a molten state. It is difficult to confirm the quality and characteristics in this molten state. In addition, the purpose of actually collecting by the sampling jig 1 is that when the molten metal 101 manufactured by the melting pot 100 is solidified to become an alloy, the quality of the alloy at any position of the melting pot 100 ( (Segregation) is to be investigated.

  For this reason, following the procedure 5, the molten metal 101A accommodated in the container 3 in the procedure 6 is solidified. FIG. 8 is an explanatory diagram showing a procedure 6 that is a solidification operation of the collected molten metal in the first embodiment of the present invention.

  The extraction jig 1 taken out in the procedure 5 is in a state where the molten metal 101A is accommodated in the internal space 32 of the accommodation container 3. In the procedure 6, as shown in FIG. 8, the collection jig 1 is charged into the cooling container 120. The cooling container 120 stores the cooling water 121, and the operator operates the support member 2 and the lid support member 51 to immerse the storage container 3 in the cooling water 121.

  The storage container 3 stores the molten metal 101A in the internal space 32 thereof. In addition, the opening 31 is sealed by the lid 5. That is, the molten metal 101 </ b> A is immersed in the cooling water 121 together with the storage container 3 in a state of being disconnected from the outside. The storage container 3 is cooled by being immersed in the cooling water 121. Naturally, the molten metal 101A accommodated in the internal space 32 is also cooled.

  By this cooling, the molten metal 101A is naturally cooled and solidified. In particular, the stress applied during cooling and solidification can be reduced by the cooling heat transmitted from the outside of the container 3. For this reason, the molten metal 101A is solidified without changing its quality.

  In this way, the molten metal 101A collected in the container 3 by the procedure 6 is solidified to obtain a target alloy. The alloy obtained from the molten metal 101A shows the quality of the molten metal at the sampling position 110. That is, information on the difference in quality of the molten metal 101 due to the difference in position inside the melting pot 100 (the difference in quality depending on the position in the melting pot 100 when the final alloy is formed) is obtained.

(Procedure 7)
When the molten metal 101A is solidified in the procedure 6, the solidified alloy is taken out in the procedure 7.

  FIG. 9 is an explanatory diagram showing a procedure 7 for taking out the alloy collected and solidified by the sampling jig in Embodiment 1 of the present invention. The lid 5 is removed from the collection jig 1 taken out from the cooling container 120. By removing the lid 5, the alloy 130 </ b> A obtained by solidifying the molten metal 101 </ b> A stored in the internal space 32 can be taken out from the storage container 3.

  The extracted alloy 130A shows the quality of the molten metal 101A at the sampling position 110. The quality of the alloy 130A based on the molten metal 101A at the sampling position 110 can be measured by various component analysis methods. The measured quality indicates the quality of the molten metal 101A at the sampling position 110 of the melting pot 100.

  The molten metal 101 manufactured in the melting pot 100 and an alloy based on the molten metal 101 should be uniquely determined by the component ratio of the raw material metal and the heating conditions. However, as described in the reference technology, the long-period laminated structure magnesium alloy tends to cause segregation of components in the melting pot 100 by using yttrium as its alloy component.

  The quality of the molten metal 101 at the sampling position 110 (that is, various positions in the melting pot 100) can be confirmed by obtaining the alloy 130A at the desired sampling position 110 of the melting pot 100 by the procedures 1 to 7. .

  Further, as described above, since the sampling jig 1 is not oxidized by air or mixed with the molten metal 101 other than the sampling position 110, the quality of the alloy 130A collected and solidified is determined by the sampling position in the melting pot 100. 110 shows the quality of the molten metal 101A.

  In the description of the procedure 1 to the procedure 7 in FIGS. 3 to 9, the molten metal 101 </ b> A is sampled by the sampling jig 1 at the sampling position 110 on the right side at the approximate center in the vertical direction of the melting pot 100. That is, finally, the quality of the molten metal 101A at the sampling position 110 is measured. For this reason, the quality of the molten metal 101 at various positions in the melting pot 100 can be measured by variously changing the sampling position 110 collected by the sampling jig 1. By measuring the quality of the molten metal 101 at these various positions, the operator can easily grasp what behavior the molten metal 101 produces inside the melting pot 100.

  The quality behavior obtained by this measurement, segregation, and the like provide an index for selecting the size, shape, form, etc. of the melting pot 100 in the production of the long-period laminated magnesium alloy. Furthermore, indicators of various conditions in the manufacturing process can be obtained.

  As described above, with the sampling jig 1 according to the first embodiment, various indexes and information for producing a long-period laminated structure magnesium alloy with a constant quality can be obtained. As a result, the manufacturing cost of the long-period laminated structure magnesium alloy can be reduced.

  In addition, Procedure 1 to Procedure 7 are common to the description of the method for collecting the molten metal 101 in the melting pot 100 using the collection jig 1 described in the first embodiment. The method for collecting the molten metal 101 of the melting pot 100 using the collection jig 1 is carried out according to Procedure 1 to Procedure 7. At this time, the molten metal 101 at the desired sampling position 110 is sampled. In addition, the quality of the collected molten metal can be measured by procedures 6 and 7.

  (Embodiment 2)

  Next, a second embodiment will be described.

  In the second embodiment, details and devices of each element will be described.

(Support member)
The support member 2 connects and supports one or a plurality of storage containers 3. The support member 2 is a member that is gripped when an operator handles the sampling jig 1. The operator holds the support member 2 and inserts the container 3 into the melting pot 100 or removes it from the melting pot 100.

  The support member 2 is preferably a rod-shaped member because it is compatible with the support of the storage container 3 and the workability of the operator. Further, since the operator grips and inserts into the molten metal 101, it is preferable that the worker is formed of a material having high heat resistance and low thermal conductivity. This is because even if the operator holds it, the risk of burns is reduced.

  Further, the supporting member 2 needs to set the container 3 at the target sampling position 110. For this reason, it is preferable to provide the scale 21 so that the operator can easily work. The scale 21 can confirm the position in the vertical direction in the melting pot 100 (molten metal 101). Alternatively, it is also preferable to have a position display function that indicates the position inside the melting pot 100 in the vertical direction and the plane direction.

  Furthermore, it is also preferable that the support member 2 includes a grip portion so that the operator can easily grip it. For example, it is also preferable to have a recess that matches the shape of the grip of the operator's hand. Or it is also suitable to provide the convex part which supports a worker's grip. By having such a structure, the operator can install the container 3 at the desired sampling position 110 easily and reliably using the support member 2.

  As shown in FIG. 10, the support member 2 may connect and support a plurality of storage containers 3. FIG. 10 is a front view of a sampling jig in Embodiment 2 of the present invention.

  When the support member 2 includes a plurality of storage containers 3, the molten metal 101 at a plurality of sampling positions 110 can be sampled by a single charging operation into the melting pot 100. At this time, each of the plurality of insertion members 4 and the plurality of lids 5 is attached to the insertion support member 41 and the lid support member 51 in accordance with the form of the support member 2 and the storage containers 3A to 3C of FIG.

(Container)
The container 3 has an opening 31 and an internal space 32, and the molten metal 101 inside the melting pot 100 can be stored in the internal space 32. Actually, as described in the first embodiment, the molten metal 101 is charged in the state of being filled with the insertion member 4, and after the molten metal 101 is accommodated, it is sealed by the lid 5 and taken out. .

  The container 3 cools the collected molten metal 101A as it is in step 6 to obtain an alloy. That is, the obtained alloy depends on the shape of the internal space 32 of the container 3. Further, the container 3 accommodates the molten metal 101A at the sampling position 110 in the internal space 32 when the insertion member 4 is removed inside the charged molten metal 101.

  In order to match such usage, it is preferable that the container 3 is provided with an opening 31 at the top. This is because the opening 31 is provided at the top, so that the molten metal at the sampling position 110 can easily enter the internal space 32 simply by removing the insertion member 4 from the charged molten metal 101. As a result, the internal space 32 is formed from the upper opening 31 to the bottom surface of the container 3. This is as shown in FIG.

  Further, since the opening 31 is provided in the upper part, there is an advantage that an alloy obtained by solidification (solidification) after being cooled in the procedure 6 can be easily taken out from the internal space 32.

  In addition, the internal space 32 preferably has a side cross-sectional shape that is substantially circular or elliptical. Furthermore, it is preferable that the side cross-sectional area at the top of the internal space 32 is larger than the side cross-sectional area at the bottom surface of the internal space 32. With such a configuration, the molten metal 101 can easily enter the internal space 32 after the insertion member 4 is removed. Further, according to such a form, the alloy 130 </ b> A obtained by solidification (solidification) after cooling can be easily taken out from the internal space 32 through the opening 31.

  As described above, the container 3 can easily collect the molten metal 101 and take out the alloy by devising the shapes of the opening 31 and the internal space 32.

  Furthermore, it is also preferable that the outer periphery of the bottom surface (bottom portion) of the internal space 32 has R or a taper. By having such R and taper, the alloy obtained by solidification (solidification) is easily taken out. In particular, since a part of the alloy is less likely to remain on the outer periphery of the bottom, maintenance during repeated use of the container 3 is facilitated.

  It is also preferable that at least a part of the surface of the internal space 32 has a release agent layer. By having the release agent layer, the alloy obtained by solidification (solidification) in the procedures 6 and 7 is easily removed from the internal space 32. Here, as the mold release agent, a boron-based material or the like is appropriate. The release agent may be applied or surface-treated to form the layer.

  It is also preferable that the release agent is applied each time the container 3 collects the molten metal 101. In many cases, the release agent is less effective. In particular, in the process in which the container 3 collects the molten metal 101 to produce a solidified (solidified) alloy, the effect of the release agent may be diminished (decreased). For this reason, it is also preferable that the release agent is applied each time the container 3 is used.

  Of course, the position of the opening 31 and the shape of the internal space 32 may be other than those described here.

(Insertion member)
The insertion member 4 fills the internal space 32 of the storage container 3. This filling makes it difficult for the internal space 32 to contain air. Since the internal space 32 is less likely to contain air, the molten metal 101 is not brought into contact with the air when the container 3 is inserted into the molten metal 101 of the melting pot 100. For this reason, in the sampling operation by the sampling jig 1, the molten metal 101 inside the melting pot 100 is not oxidized and the quality thereof is not changed or deteriorated.

  Further, since the internal space 32 is filled with the insertion member 4, the molten metal 101 other than the collection position 110 is unlikely to enter the internal space 32 until the insertion member 4 is removed at the collection position 110. Of course, when the insertion member 4 is removed at the sampling position 110, there is no fear of oxidizing the molten metal 101 at the sampling position 110 because air is not contained in the internal space 32.

  As described above, the insertion member 4 fills the internal space 32, so that the molten metal 101 at the collection position 110 can be accurately collected and the quality of the collected molten metal 101A is not changed. In addition, the quality of the molten metal 101 itself of the melting pot 100 is not changed by sampling.

  For this reason, it is appropriate for the insertion member 4 to have a shape and a size that fit into the internal space 32. For this reason, for example, when manufacturing the storage container 3, the part cut out from the inside of the manufactured member may be the insertion member 4, and the part left by the cutting may be the internal space 32. By such a manufacturing process, the insertion member 4 having a shape that exactly matches the internal space 32 is manufactured.

  Further, it is also preferable that the insertion member 4 is provided with a release agent layer on at least a part of its surface in the same manner as the surface of the internal space 32. This is because when the insertion member 4 is removed after being inserted into the molten metal 101, the molten metal 101 is less likely to adhere to the surface. If it is difficult to adhere, maintenance in repeated use of the insertion member 4 becomes easy. Of course, in repeated use, the quality measurement of the molten metal 101 collected at the collection position 110 due to the adhering molten metal 101 (solidified during repeated use) is unlikely to be adversely affected.

  An insertion support member 41 is attached to the insertion member 4. As described in the procedure 1 and the like using FIG. 4 and the like, the operator can use the insertion support member 41 to insert and remove the insertion member 4 from the internal space 32.

  The insertion support member 41 is a rod-shaped member, like the support member 2. Moreover, it is also suitable to provide a recessed part and a convex part so that an operator can easily hold it. Of course, like the support member 2, it is preferable that the material has excellent heat resistance and low thermal conductivity. In addition, a material that does not chemically react or physically react with the magnesium alloy is preferable. This is because by having such an aspect, the convenience for the operator is improved.

(lid)
The lid 5 blocks the internal space 32 where the molten metal 101 is collected from the outside. The lid 5 is also preferably provided with a lid support member 51 so that the operator can easily work. Similarly to the support member 2 and the like, it is also appropriate that the lid support member 51 includes a concave portion or a convex portion so that an operator can easily grip and operate the lid support member 51.

  Since the lid 5 needs to securely close the opening 31 of the storage container 3, it is also preferable that the lid 5 has a structure that fits with the opening 31. The lid 5 has fitting teeth and the like, and the lid 5 can reliably seal the opening 31 by fitting the fitting teeth into a receiving port of the opening 31.

  The lid 5 seals the internal space 32 that contains the molten metal 101A. In this sealed state, the container 3 is taken out from the melting pot 100. For this reason, it is also suitable that the surface of the lid 5 also has a release agent layer. This is the same reason as the internal space 32.

  It is also preferable that the lid support member 51 has a scale and a position confirmation function so that the lid 5 can reliably seal the opening 31.

  As described above, the handling of the collection jig 1 and the operation of the collection method using the collection jig 1 are easy and reliable by various devices of each element. As a result, the quality of the molten metal at the desired sampling position 110 inside the melting pot 100 can be measured correctly.

  In addition, the collection jig demonstrated in Embodiment 1-2 is an example explaining the meaning of this invention, and includes the deformation | transformation and remodeling in the range which does not deviate from the meaning of this invention.

DESCRIPTION OF SYMBOLS 1 Extraction jig 2 Support member 21 Scale 3 Storage container 31 Opening part 32 Internal space 4 Insertion member 41 Insertion support member 5 Lid 51 Lid support member 100 Molten pot 101 Molten metal 110 Collection position 130 Alloy

Claims (13)

One or more storage containers having an internal space and an opening;
A support member that supports the container and is capable of moving and setting the position of the container;
An insertion member that fills the internal space and closes the opening;
An insertion support member that is detachable from the internal space with the insertion member;
A molten metal sampling jig comprising: a lid that closes the opening in a state where a space is left in the internal space of the storage container. The support member is configured to insert the container into a molten metal housed in a melting pot,
The molten metal sampling jig according to claim 1, wherein the support member sets the storage container at a desired sampling position inside the molten metal.   The melting position according to claim 2, wherein the sampling position is determined by at least one of a vertical direction and a plane direction coordinate inside the molten metal, and the support member has a scale indicating a position in the vertical direction inside the molten metal. Metal sampling jig.   The molten metal sampling jig according to any one of claims 1 to 3, wherein a side sectional area at an upper portion of the inner space is larger than a side sectional area at a bottom portion of the inner space.   The molten metal sampling jig according to any one of claims 1 to 4, wherein a side cross-sectional shape of the internal space is a substantially circular shape or a substantially elliptical shape.   The molten metal collection according to any one of claims 1 to 5, wherein the opening is provided in an upper part of the storage container, and the internal space is formed from the opening provided in the upper part toward a bottom part. Jig.   The sampling jig according to any one of claims 1 to 6, wherein an outer periphery of the bottom portion of the internal space has an R or a taper.   The molten metal sampling jig according to claim 1, wherein the insertion member can substantially fill the internal space and form a state in which the internal space does not communicate with the molten metal.   The molten metal sampling jig according to any one of claims 1 to 8, wherein the lid can substantially seal the opening while leaving the internal space.   The molten metal sampling jig according to any one of claims 1 to 9, wherein at least a part of the surface of the internal space, the surface of the insertion member, and the surface of the lid has a layer of a release agent. In a state where the insertion member is inserted into the internal space, the storage container is set at a sampling position inside the molten metal,
In the sampling position, the insertion member is removed from the internal space,
The molten metal at the sampling position is accommodated in the internal space,
The opening is closed by the lid;
The molten metal extraction jig according to any one of claims 1 to 10, wherein the container is taken out from the molten metal in a state where the lid is closed. One or more storage containers having an internal space and an opening;
A support member that supports the container and is capable of moving and setting the position of the container;
An insertion member that fills the internal space and closes the opening;
An insertion support member that is detachable from the internal space with the insertion member;
A metal at a sampling position inside the molten metal housed in the molten metal using a molten metal collecting jig provided with a lid that closes the opening while leaving a space in the internal space of the container. The quality measurement method of
With the insertion member inserted into the internal space, the container is set at the sampling position inside the molten metal housed in a melting pot,
In the sampling position, the insertion member is removed from the internal space,
The molten metal at the sampling position is accommodated in the internal space,
The opening is closed by the lid;
A method for collecting molten metal, wherein the container is taken out from the molten metal in a state where the lid is closed. The container removed from the molten metal is cooled;
The molten metal accommodated in the internal space is solidified, and the solidified alloy is taken out from the internal space,
The method for collecting molten metal according to claim 12, wherein a predetermined measurement process is performed on the solidified alloy.