Preparation mold for artificial salt rock test piece

Abstract

The utility model discloses a preparation mold for an artificial salt rock test piece, and belongs to the technical field of salt rock test piece preparation. According to the preparation mold for the artificial salt rock test piece, the base and the lining are arranged to form the first cylindrical cavity which is used for containing materials for the salt rock test piece; by arranging the extrusion part and the driving mechanism, the material for the salt rock test piece is pressed; the lining is protected by arranging the pressure-bearing shell outside the lining; the groove with the inverted circular truncated cone structure is formed, so that the lining can be conveniently and stably inserted into the groove; furthermore, after pressing is completed, when rock salt needs to be transferred into a high-temperature furnace, the rock salt test piece is transferred into the high-temperature furnace through the lining, the problems that the rock salt test piece is loose and not formed are solved, the rate of finished products of the rock salt test piece is increased, and the problem that an existing rock salt test piece preparation mold cannot achieve high rate of finished products and low cost at the same time is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to salt rock test piece preparation technical field, specifically related to a kind of preparation mould for artificial salt rock test piece. BACKGROUND

[0002] Artificial salt rock test piece is usually mixed by pure salt and other additives according to certain proportion, and crystal is the halide of isometric crystal system six octahedral crystal class, when the dissolution characteristics and mechanical characteristics of rock salt are studied, a large number of artificial salt rock test pieces are needed;During the preparation of artificial salt rock, salt rock powder is usually formed into sample by pressing method, and the sample is heat treated by high temperature annealing step to improve its crystalline structure and performance.

[0003] The existing preparation mould is mostly single-layer preparation mould, after pressing and demolding, the salt rock test piece is transferred to high temperature furnace for annealing due to different pressing pressure required by experiment, and the salt rock test piece is easily damaged during the transfer process due to the instability of the salt rock test piece at this time;The yield of salt rock test piece is low.

[0004] In order to solve this problem, the prior art adds a heating layer outside the preparation mould to reduce the transfer step, and thus avoids the problems existing in the transfer process, since the temperature required by the annealing step is about 720 DEG C, the cost of adding the heating layer is high.

[0005] In summary, the existing salt rock test piece preparation mould cannot realize high yield and low cost at the same time. UTILITY MODEL CONTENTS

[0006] The technical problem to be solved by the utility model lies in the deficiencies in the prior art, and provides a preparation mould for artificial salt rock test piece, which has high yield, low cost and strong practicability.

[0007] To solve the above technical problems, the utility model adopts the technical scheme that:

[0008] A preparation mould for artificial salt rock test piece, comprising inner lining, pressure-bearing shell, extrusion piece, base and driving mechanism;

[0009] The base is provided with a groove with inverted round table structure for placing the extrusion piece, and the outer side structure of the inner lining is adapted to the structure of the groove;

[0010] The inner lining is internally provided with a first cylindrical cavity for placing salt rock test piece material;

[0011] The pressure-bearing shell is internally provided with a second cylindrical cavity for setting the inner lining;

[0012] The extruding piece comprises a support part, the second extruding part and the first extruding part are fixedly connected to the support part respectively at the upper and lower positions; the second extruding part and the first extruding part are used for extruding the salt rock test sample into the first cylindrical cavity; the length of the first extruding part is less than that of the second extruding part; the support part is used for being arranged on the upper end of the pressure bearing shell to limit the length of the second extruding part and the first extruding part; the driving end of the driving mechanism is in contact with the upper surface of the extruding piece to drive the extruding piece to extrude downward.

[0013] The diameter of the second cylindrical cavity is equal to the outer diameter of the inner liner; the outer diameters of the second extruding part and the first extruding part are equal to the inner diameter of the inner liner.

[0014] Further, the pressure bearing shell is in a rectangular structure; the pressure bearing shell comprises two half shells and is connected through at least four symmetrically arranged threaded holes and fixing bolts.

[0015] Further, the inner liner comprises two half cylinders, and the two half cylinders are connected to each other through a fixed tenon and slot connection mode at the joint thereof.

[0016] Further, the driving mechanism comprises a placing table and at least two bearing columns, the placing table is arranged between the bearing columns and is used for supporting the base; the bearing column is provided with a bearing beam, a hydraulic oil cylinder is arranged below the bearing beam, the output end of the hydraulic oil cylinder is connected to a pressure plate through a connecting part, and the pressure plate is used as the driving end of the driving mechanism and is in contact with the upper surface of the extruding piece.

[0017] Further, the inner liner is made of stainless steel, and the thickness of the inner liner ranges from 2mm to 5mm.

[0018] Further, an anti-sticking coating layer is arranged on the inner side of the inner liner.

[0019] Further, the included angle between the generatrix of the inverted round table structure and the upper bottom surface ranges from 87° to 89°.

[0020] Further, the two side surfaces of the base extend out of flat plates and are used as handles.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] The utility model discloses a preparation mould for artificial salt rock test piece through setting up base and inner lining constitutes first cylindrical cavity, is used for containing salt rock test piece material, realizes the pressing of salt rock test piece material through setting up extruding piece and drive mechanism, realizes the protection of inner lining through setting up pressure -bearing shell outside inner lining, through the recess of setting up inverted round platform structure, guarantee that inner lining can conveniently, stably insert recess, further, when needing to remove rock salt time to high temperature furnace after completing the pressing, through inner lining, salt rock test piece is removed to high temperature furnace, avoid the problem that salt rock test piece appears loose and does not form, improve the yield of salt rock test piece, solved the problem that the preparation mould of current salt rock test piece can not realize high yield and low cost simultaneously. In addition, extruding piece passes through setting up support and first extruding part, and support length of extruding plate into first cylindrical cavity is limited to first extruding part, avoids salt rock test piece excessive compression, through the setting of second cylindrical cavity diameter equal to the outer diameter of inner lining, guarantee that pressure -bearing shell better support protection inner lining, through setting up the outer diameter of first extruding part and second extruding part equal to the inner diameter of inner lining, guarantee that first extruding part and second extruding part even the pressing of salt rock test piece, thereby improve the accuracy of subsequent research.

[0023] The technical scheme of the utility model will be described in further detail below with reference to the drawings and embodiments. DRAWINGS

[0024] Figure 1 It is the three-dimensional structure schematic diagram of the preparation mould for artificial salt rock test piece embodiment of the utility model;

[0025] Figure 2 It is the explosion structure schematic diagram of the preparation mould for artificial salt rock test piece embodiment of the utility model;

[0026] Figure 3 It is the structure schematic diagram of drive mechanism of the preparation mould for artificial salt rock test piece embodiment of the utility model;

[0027] Figure 4 It is the inner lining overhead structure schematic diagram of the preparation mould for artificial salt rock test piece embodiment of the utility model;

[0028] MARKING DESCRIPTION:

[0029] 1, inner lining, 2, first cylindrical cavity, 3, pressure -bearing shell, 4, half shell, 5, threaded hole, 6, fixed bolt, 7, extruding piece, 8, support, 9, second extruding part, 10, first extruding part, 11, base, 12, recess, 13, flat plate, 14, half cylinder, 15, placing table, 16, bearing column, 17, bearing beam, 18, hydraulic oil cylinder, 19, connecting portion, 20, pressure plate. DETAILED DESCRIPTION

[0030] Preparation mold for artificial salt rock test piece

[0031] As shown in Figure 1 , Figure 2 , the preparation mold for artificial salt rock test piece comprises an inner liner 1, a pressure-bearing shell 3, an extrusion piece 7, a base 11 and a driving mechanism.

[0032] In order to facilitate the assembly of the inner liner 1 and the base 11, a groove 12 with a rounded table structure is provided on the base 11 for placing the extrusion piece 7, and the outer side structure of the inner liner 1 is adapted to the structure of the groove 12; the included angle between the generatrix of the rounded table structure and the upper bottom surface ranges from 87° to 89°.

[0033] The inner liner 1 is internally provided with a first cylindrical cavity 2 for placing salt rock test piece materials. The inner liner 1 is made of stainless steel, and the thickness of the inner liner 1 ranges from 2 mm to 5 mm, preferably 2 mm. By providing a relatively thin inner liner 1, the influence of the inner liner 1 on the annealing of the salt rock test piece is avoided. Preferably, the inner liner 1 is made of 2520 stainless steel, which guarantees the pressure-bearing capacity and high-temperature resistance of the mold, so that the mold can work stably under high temperature 1200℃ and high pressure 450MPa. In order to facilitate demolding, an anti-sticking coating is provided on the inner side of the inner liner 1, which reduces the operation difficulty and improves the production efficiency.

[0034] In order to facilitate the assembly of the inner liner 1, a second cylindrical cavity is provided in the pressure-bearing shell 3 for setting the inner liner 1; preferably, the pressure-bearing shell 3 is made of H13 die steel, which has a tensile strength of about 1400-1500MPa and a yield strength of about 1200-1300MPa. This material can withstand high pressure and guarantee the rigidity and strength of the mold, thereby prolonging the service life of the mold. In order to facilitate manufacturing, the pressure-bearing shell 3 has a rectangular structure. In order to facilitate assembly, the pressure-bearing shell 3 comprises two half shells 4 connected by at least four symmetrically arranged threaded holes 5 and fixing bolts 6, so as to guarantee that the pressure-bearing shell 3 can uniformly support the inner liner 1.

[0035] The fixing bolt 6 is a bolt with a strength of M6 level 12.9, which fixes the outer frame by high-strength bolts to ensure the overall stability of the mold.

[0036] During pressing, the assembly of the pressure-bearing shell 3 is realized by the fixing bolt 6, and during annealing, the fixing bolt 6 is disassembled to realize the disassembly of the pressure-bearing shell 3. The inner liner 1 isolates the salt rock test piece from the pressure-bearing shell 3, so as to protect the pressure-bearing shell 3 from being corroded by corrosive substances in the salt rock sample, thereby improving the service life of the pressure-bearing shell 3. The general pressing force is about 200Mpa, and the annealing temperature is about 720℃.

[0037] In order to limit the length of the extrusion part 7 into the first cylindrical cavity 2, the extrusion part 7 comprises a support part 8, the second extrusion part 9 and the first extrusion part 10 are fixedly connected to the support part 8 respectively, the length of the first extrusion part 10 is less than the length of the second extrusion part 9; the second extrusion part 9 and the first extrusion part 10 are used for extruding the salt rock specimen material into the first cylindrical cavity 2; the support part 8 is used for being placed on the upper end of the pressure shell 3 to limit the length of the second extrusion part 9 and the first extrusion part 10; the driving end of the driving mechanism is in contact with the upper surface of the extrusion part 7 to drive the extrusion part 7 to extrude downward, and the length of the extrusion part 7 is limited to limit the pressing force. In the embodiment, the inner diameter of the lining 1 is 25mm, the height is 70mm, the length of the first extrusion part 10 is 10mm, and the length of the second extrusion part 9 is 25mm. The size of each part of the mold can be adjusted adaptively according to the size of the salt rock specimen. When the artificial salt rock specimen is made, the salt rock specimen material is poured twice, the second extrusion part 9 is used to extrude the material after the first pouring, the first extrusion part 10 is used to extrude the material after the second pouring, and then the subsequent annealing step is performed to complete the preparation of the salt rock specimen.

[0038] In order to better support and protect the lining 1, the diameter of the second cylindrical cavity is equal to the outer diameter of the lining 1. In order to ensure that the first extrusion part 10 uniformly presses the salt rock specimen, the outer diameters of the second extrusion part 9 and the first extrusion part 10 are equal to the inner diameter of the lining 1.

[0039] As shown in Figure 4 In order to facilitate the demolding of the salt rock specimen, the lining 1 comprises two half cylinders 14, and the two half cylinders 14 are connected to each other by a fixed mortise and tenon joint at the joint. After annealing is completed, the demolding is completed by breaking the lining 1. During the process of transferring the salt rock specimen to the high-temperature furnace after pressing is completed, the lining 1 and the salt rock specimen can be transferred to the high-temperature furnace together through the base 11, or the lining 1 and the salt rock specimen can be directly clamped and transferred to the high-temperature furnace.

[0040] As shown in Figure 3 In order to ensure that the driving mechanism effectively extrudes the salt rock specimen material, the driving mechanism comprises a placement table 15 and at least two bearing columns 16, the placement table 15 is arranged between the bearing columns 16 and is used for supporting the base 11; the bearing column 16 is provided with a bearing beam 17, a hydraulic oil cylinder 18 is arranged below the bearing beam 17, the output end of the hydraulic oil cylinder 18 is connected to a pressing plate 20 through a connecting part 19, and the pressing plate 20 is in contact with the upper surface of the extrusion part 7 as the driving end of the driving mechanism.

[0041] In order to facilitate the movement of the mold, the two sides of the base 11 extend out of the flat plate 13 to act as a handle, and the mold is transferred as a whole through the handle during use.

[0042] The above is only the preferred embodiment of the present application, and does not limit the present application. Any simple modification, change, and equivalent structural change of the above embodiment according to the technical essence of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A preparation mold for an artificial salt rock test piece, characterized by: It comprises a lining (1), a pressure shell (3), an extruding piece (7), a base (11) and a driving mechanism; A groove (12) with inverted round table structure is formed on the base (11) for placing the extruding piece (7), and the outer structure of the lining (1) is adapted to the structure of the groove (12); A first cylindrical cavity (2) is arranged inside the lining (1) for placing salt rock test sample; A second cylindrical cavity is arranged in the pressure shell (3) for arranging the lining (1); The extruding piece (7) comprises a support part (8), and a second extruding part (9) and a first extruding part (10) are fixedly connected to the upper and lower parts of the support part (8) respectively; the second extruding part (9) and the first extruding part (10) are both used for extruding the salt rock test sample into the first cylindrical cavity (2), the length of the first extruding part (10) is less than that of the second extruding part (9), the support part (8) is used for being arranged on the upper end of the pressure shell (3) to limit the length of the second extruding part (9) and the first extruding part (10) extending into, and the driving end of the driving mechanism is in contact with the upper surface of the extruding piece (7) to drive the extruding piece (7) to extrude downward; The diameter of the second cylindrical cavity is equal to the outer diameter of the lining (1), and the outer diameters of the second extruding part (9) and the first extruding part (10) are both equal to the inner diameter of the lining (1).

2. A mold for preparing an artificial salt rock test piece according to claim 1, characterized in that: The pressure shell (3) is in a rectangular structure, and comprises two half shells (4) which are connected through at least four symmetrically arranged threaded holes (5) and fixed bolts (6).

3. A mold for preparing a man-made salt rock test piece according to claim 1, characterized in that: The lining (1) comprises two half cylinders (14) which are connected to each other through a fixed tenon and groove connection mode at the joint thereof.

4. A mold for preparing a man-made salt rock test piece according to claim 1, characterized in that: The driving mechanism comprises a placing table (15) and at least two bearing columns (16), the placing table (15) is arranged between the bearing columns (16) and is used for supporting the base (11), a bearing beam (17) is arranged on the bearing column (16), a hydraulic oil cylinder (18) is arranged below the bearing beam (17), the output end of the hydraulic oil cylinder (18) is connected with a pressure plate (20) through a connecting part (19), and the pressure plate (20) is in contact with the upper surface of the extruding piece (7) as the driving end of the driving mechanism.

5. A mold for preparing a man-made salt rock test piece according to claim 1, characterized in that: The lining (1) is made of stainless steel, and the thickness of the lining (1) ranges from 2mm to 5mm.

6. A mold for preparing a man-made salt rock test piece according to claim 1, characterized in that: An anti-sticking coating is arranged on the inner side of the lining (1).

7. A mold for preparing a man-made salt rock test piece according to claim 1, characterized in that: The included angle between the generatrix of the inverted round table structure and the upper bottom surface ranges from 87° to 89°.

8. A mold for preparing a man-made salt rock test piece according to claim 1, characterized in that: Two flat plates (13) are extended from the two sides of the base (11) and are used as handles.

Images