CN109632440B - Blank body, casting mold and method for testing wet slurry blank cracking performance - Google Patents

Blank body, casting mold and method for testing wet slurry blank cracking performance Download PDF

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Publication number
CN109632440B
CN109632440B CN201811503291.0A CN201811503291A CN109632440B CN 109632440 B CN109632440 B CN 109632440B CN 201811503291 A CN201811503291 A CN 201811503291A CN 109632440 B CN109632440 B CN 109632440B
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blank
connecting part
slurry
cracking
testing
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CN109632440A (en
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林孝发
林孝山
旷永继
贺浮平
闵卫
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Jomoo Kitchen and Bath Co Ltd
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Jomoo Kitchen and Bath Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/36Embedding or analogous mounting of samples
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/36Embedding or analogous mounting of samples
    • G01N2001/366Moulds; Demoulding
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001Type of application of the stress
    • G01N2203/0003Steady
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0017Tensile
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058Kind of property studied
    • G01N2203/006Crack, flaws, fracture or rupture
    • G01N2203/0062Crack or flaws

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a green body, a casting mold and a method for testing the wet slurry blank cracking performance, wherein at least one group of detection modules are arranged on the green body; the detection module comprises a connecting part and stretching parts arranged at two ends of the connecting part; the connecting part is connected with the stretching parts at two ends of the connecting part into a whole, and a unfilled corner is arranged between the connecting part and the stretching part at least one end; the unfilled corners are acute angles and are arranged towards the axis direction; the slurry is poured into the mold to form the blank, all blanks comprise more than two groups of detection modules with different connecting part lengths, the mold is opened after the time is set artificially, and the cracking performance of the slurry wet blank is tested, measured and evaluated more objectively according to the cracking quantity of the blanks and the cracking of the blanks in the detection modules with the lengths, so that the crack occurrence rate of the blanks is reduced.

Description

Blank body, casting mold and method for testing wet slurry blank cracking performance
Technical Field
The invention relates to the technical field of ceramic preparation, in particular to a blank body, a casting mold and a method for testing wet slurry blank cracking performance.
Background
In the conventional method, in order to reduce the cracking of the ceramic forming blank, the comprehensive judgment is generally carried out by detecting and adjusting the drying strength, the drying shrinkage rate and the plasticity index of the pug.
However, in the above technical solution, each item of detection data itself cannot directly reflect the cracking performance of the slurry wet blank; meanwhile, certain contradiction correlation exists among various parameters, and the adjusted result cannot be accurately judged, so that the adjusted result can only be used as a reference for subsequent process processing and is verified through production.
For the above reasons, the problem of how to test the wet mud blank cracking performance and provide effective quantitative data remains to be further improved.
Disclosure of Invention
The invention aims to overcome the defects or problems in the background art and provide a blank, a casting mold and a method for testing the wet slurry blank cracking performance, so as to more objectively test, measure and evaluate the wet slurry blank cracking performance and further reduce the blank crack occurrence rate.
In order to achieve the purpose, the invention adopts the following technical scheme:
a blank body (first technical scheme) for testing wet slurry blank cracking performance is provided with at least one group of detection modules; the detection module comprises a connecting part and stretching parts arranged at two ends of the connecting part; the connecting part is connected with the stretching parts at two ends of the connecting part into a whole, and a unfilled corner is arranged between the connecting part and the stretching part at least one end; the unfilled corner is acute and is set up towards the axis direction.
Based on the first technical scheme, the connecting device is further provided with a second technical scheme, and in the second technical scheme, two ends of the connecting part are respectively provided with a pair of unfilled corners so as to form necking with the stretching parts at the two ends of the connecting part.
Based on the second technical scheme, the angle-changing device is also provided with a third technical scheme, and in the third technical scheme, the angle range of the unfilled angle is 45-65 degrees.
Based on the second technical scheme, a fourth technical scheme is also provided, and in the fourth technical scheme, the width range of the necking is 8-12 mm.
Based on any one of the first technical scheme, the fourth technical scheme and the fifth technical scheme, wherein more than two groups of detection modules which are connected into a whole are arranged on the blank body in the fifth technical scheme; the lengths of the connecting parts of the detection modules in each group are different.
Based on the fifth technical scheme, a sixth technical scheme is further provided, and in the sixth technical scheme, the groups of detection modules are arranged along the length direction.
Based on the sixth technical scheme, a seventh technical scheme is further provided, and in the seventh technical scheme, the blank body comprises five groups of detection modules; the length ranges of the connecting parts of the detection modules in each group are respectively 18-24 mm, 27-35 mm, 36-46 mm, 55-66 mm and 74-90 mm.
A casting mold (eighth technical means), the cavity of the mold is used for casting a blank for testing the wet blank cracking performance of slurry according to any one of the first to seventh technical means.
A method for testing wet blank cracking performance of slurry (ninth technical means), wherein the testing method comprises the following steps: step 1: pouring a slurry into a mould to form at least one blank according to any one of claims 1 to 7; all the blanks comprise more than two groups of detection modules with different connecting part lengths; step 2: opening the mold after artificially setting time; and step 3: and judging the cracking condition of the slurry wet blank according to the cracking quantity of the blank body and the cracking of the blank body in the detection module with which length.
As can be seen from the above description of the present invention, the present invention has the following advantages over the prior art:
1. the wet slurry blank is cracked due to the fact that a tensile force which is larger than the tensile force which can be borne by the blank at the stress concentration position is generated in the process of shrinkage of the blank, so that at least one group of detection modules are arranged on the blank to test the cracking performance of the wet slurry blank; each group of detection modules comprises a connecting part and stretching parts arranged at two ends of the connecting part, the connecting part and the stretching parts at two ends of the connecting part are connected into a whole, and a notch angle which is acute and is arranged towards the axis direction is arranged between the connecting part and the stretching part at least one end; therefore, the arrangement of the unfilled corners has the effect of testing the wet blank of the slurry for cracking performance.
2. The two ends of the connecting part are respectively provided with the pair of unfilled corners, and the necking is formed between the connecting part and the stretching parts at the two ends of the connecting part, so that the blank is more prone to fracture in the process of shrinking, the arrangement accelerates the occurrence of blank cracks, and the testing of the wet slurry blank cracking performance is further enhanced.
3. The angle range of the unfilled corner is set to be 45-65 degrees, so that the slurry wet blank can further accelerate the blank, and the setting not only improves the testing efficiency, but also improves the validity of testing data.
4. As the size of small hairline cracks in the product wet blank cracks is generally 8-12 mm, the width range of the necking is 8-12 mm, the wet blank cracking scene can be more truly reduced, and the slurry cracking condition can be comprehensively detected.
5. The blank bodies with different lengths can shrink to different degrees, the longer the length is, the larger the shrinkage is, and the larger the tension is, so that more than two groups of detection modules which are connected into a whole are arranged on the blank bodies, and the lengths of the connecting parts of the groups of detection modules are different, so that the cracking performance of the slurry wet blank under different tension effects can be detected, and the arrangement is favorable for measuring and evaluating the cracking performance of the slurry wet blank more intuitively.
6. The detection modules are arranged along the length direction, so that the cracking condition of the blank body can be observed more visually, and the cracking performance of the slurry wet blank can be determined through comparison.
7. By arranging five groups of detection modules, and the length ranges of the connecting parts of the detection modules 2 are respectively 18-24 mm, 27-35 mm, 36-46 mm, 55-66 mm and 74-90 mm, a more specific implementation mode is provided for detecting the cracking performance of the blank under different tensile forces.
8. By setting the cavity of the mold to the shape of the blank, the blank which can be used for testing the wet blank cracking performance of slurry can be quickly formed, and the blank is convenient to use repeatedly.
9. The cracking performance of the slurry wet blank can be judged by the cracking quantity of the blank and the cracking of the blank in the detection module with which length, the cracking performance of the slurry wet blank can be judged more accurately by the arrangement, and then the subsequent production process technology is better matched, so that the occurrence rate of product cracks is effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a perspective view of a blank according to the present invention;
FIG. 2 is a top view of a blank according to the present invention;
fig. 3 is a perspective view of the casting mold according to the present invention.
Description of the main reference numerals:
the detection device comprises a blank body 1, a detection module 2, a stretching part 21, a connecting part 22, a notch 23, a necking 24, a length range A1 of a first connecting part, a length range A2 of a second connecting part, a length range A3 of a third connecting part, a length range A4 of a fourth connecting part, a length range A5 of a fifth connecting part, a length range B of the stretching part, a width range C of the necking, a width range D of the stretching part, an angle range X of the notch, a casting mold 3 and a cavity 31.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are presently preferred embodiments of the invention and are not to be taken as an exclusion of other embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, the terms "first", "second" or "third", etc. are used for distinguishing between different items and not for describing a particular sequence.
In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional or positional relationships indicated by the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are based on the directional or positional relationships indicated in the drawings and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so indicated must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.
In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" or "fixedly connected" should be interpreted broadly, that is, any connection between the two that does not have a relative rotational or translational relationship, that is, non-detachably fixed, integrally connected, and fixedly connected by other devices or elements.
In the claims, the specification and the drawings of the present invention, the terms "including", "having" and their variants, if used, are intended to be inclusive and not limiting.
Referring to fig. 1 and 2, a blank 1 for testing wet blank cracking performance of slurry according to the present invention is shown in a perspective view and a top view, the blank 1 is provided with at least one set of detection modules 2, each set of detection modules 2 comprises a connection portion 22 and stretching portions 21 provided at two ends thereof;
wherein, the connecting part 22 is connected with the stretching parts 21 at two ends into a whole, and a notch 23 which forms an acute angle and is arranged towards the axial direction is arranged between the connecting part and the stretching part 21 at least one end;
in the present embodiment, a pair of notches 23 are respectively provided between the connecting portion 22 and the stretching portions 21 at both ends thereof to form a throat 24 with the stretching portions 21 at both ends thereof, the angle range X of the notches 23 may be 45 ° to 65 °, 60 ° is selected in the present embodiment, and the width range C of the throat 24 may be 8mm to 12mm, 10mm is selected in the present embodiment.
When more than two groups of detection modules 2 are arranged on the blank body 1, the detection modules 2 are arranged along the length direction and are connected into a whole; wherein, the lengths of the connecting parts 22 in each group of detection modules 2 are different;
in this embodiment, five groups of detection modules 2 are arranged on the blank body 1, and each detection module comprises a first connection part, a second connection part, a third connection part, a fourth connection part and a fifth connection part;
the length range A1 of the first connecting portion may be 74-90 mm, 80mm is selected in the embodiment, the length range A2 of the second connecting portion may be 55-66 mm, 60mm is selected in the embodiment, the length range A3 of the third connecting portion may be 36-46 mm, 40mm is selected in the embodiment, the length range A4 of the fourth connecting portion may be 27-35 mm, 30mm is selected in the embodiment, the length range A5 of the fifth connecting portion may be 18-24 mm, 20mm is selected in the embodiment, the width range of each group of stretching portions 21 may be 36-42 mm, 38mm is selected in the embodiment, the length range B of the stretching portions 21 may be 16-22 mm, and 17mm is selected in the embodiment.
Referring to fig. 3, there is shown a perspective view of a casting mold 3 according to the present invention, wherein a cavity 31 of the casting mold 3 is used for casting a blank 1 for testing wet blank cracking performance of slurry, and in this embodiment, two sets of identical cavities 31 are provided on the casting mold 3 to form two blanks 1.
The method for testing the wet blank cracking performance of the slurry comprises the following steps:
step 1: pouring the slurry into the pouring mold 3 shown in fig. 3 to form at least one blank 1, in this embodiment, 2 blanks are adopted to more conveniently perform comparison detection, the blank 1 includes more than two groups of detection modules 2 with different lengths of the connection portions 22, and in this embodiment, five groups of detection modules 2 with different lengths of the connection portions 22 are included.
Step 2: and opening the mold after the manual setting time, wherein the manual setting time is the slurry suction time multiplied by 1.3-1.5, and 1.3 is selected in the embodiment, so that the influence of the slurry suction time and the consolidation time on the slurry wet blank is fully considered, and the cracking performance of the slurry wet blank can be more accurately reflected.
And step 3: and judging the cracking performance of the slurry wet blank according to the cracking number of the blank body 1 and the specific length of the blank body in the detection module 2.
When in actual use, firstly, the slurry is poured into a mold to form a blank body 1, and the mold is opened after artificially setting time;
the blank 1 comprises five detection modules 2 with different lengths of the connecting parts 22, so that the cracking performance of the slurry wet blank is judged by observing the specific length of the connecting part 22 of the blank 1 and the cracking quantity of the connecting part;
generally, the longer the length of the connecting portion 22, the greater the shrinkage and the greater the tensile force to which it is subjected, so that when none of the longest first connecting portions of the blank 1 is cracked, the remaining second to fifth connecting portions are not cracked; when the shortest fifth connecting part of the blank body 1 cracks, the rest first to fourth connecting parts crack to different degrees;
when the total number of the cracks of the two wet mud blanks is less than or equal to 3, the wet mud blanks can be judged to have no cracks basically; when the total number of cracks is more than or equal to 4 and less than or equal to 6, the mud wet blank cracks are judged to be few, and the repair is convenient; when the total number of cracks is more than or equal to 7 and less than or equal to 8, the number of cracks of the slurry wet blank can be judged, and the repair is difficult; when the total number of cracks is larger than 9, the cracks of the slurry wet blank can be judged to be serious, and the repair is difficult.
The description of the above specification and examples is intended to be illustrative of the scope of the present invention and is not intended to be limiting. Modifications, equivalents and other improvements which may occur to those skilled in the art and which may be made to the embodiments of the invention or portions thereof through a reasonable analysis, inference or limited experimentation, in light of the common general knowledge, the common general knowledge in the art and/or the prior art, are intended to be within the scope of the invention.

Claims (8)

1. A blank for testing the wet blank cracking performance of slurry is characterized in that: more than two groups of detection modules which are connected into a whole are arranged on the blank body; the detection module comprises a connecting part and stretching parts arranged at two ends of the connecting part; the connecting part is connected with the stretching parts at two ends of the connecting part into a whole, and a unfilled corner is arranged between the connecting part and the stretching part at least one end; the unfilled corners are acute angles and are arranged towards the axis direction; the lengths of the connecting parts in the detection modules in each group are different.
2. A body for testing wet mud cracking properties according to claim 1, wherein: the two ends of the connecting part are respectively provided with a pair of unfilled corners so as to form necking with the stretching parts at the two ends of the connecting part.
3. A body for testing wet mud cracking properties according to claim 2, wherein: the angle range of the unfilled corner is 45-65 degrees.
4. A body for testing wet mud cracking properties according to claim 2, wherein: the width range of the necking is 8 mm-12 mm.
5. A body for testing wet mud cracking properties according to claim 4, wherein: the detection modules are arranged along the length direction.
6. A body for testing wet mud cracking properties according to claim 5, wherein: the blank body comprises five groups of detection modules; the length ranges of the connecting parts of the detection modules in each group are respectively 18-24 mm, 27-35 mm, 36-46 mm, 55-66 mm and 74-90 mm.
7. A casting mold is characterized in that: the cavity of the mould is used for pouring a blank body for testing the wet blank cracking performance of the slurry according to any one of claims 1 to 6.
8. A method for testing wet blank cracking performance of slurry is characterized by comprising the following steps: the test method comprises the following steps:
step 1: pouring a slurry into a mould according to claim 7 to form at least one blank according to any one of claims 1 to 6; all the blanks comprise more than two groups of detection modules with different connecting part lengths;
step 2: opening the mold after artificially setting time;
and step 3: and judging the cracking performance of the slurry wet blank according to the cracking quantity of the blank body and the specific cracking in the detection module with which length.
CN201811503291.0A 2018-12-10 2018-12-10 Blank body, casting mold and method for testing wet slurry blank cracking performance Active CN109632440B (en)

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