CN113237894A - Method for detecting crack defects of ceramic tile green body - Google Patents
Method for detecting crack defects of ceramic tile green body Download PDFInfo
- Publication number
- CN113237894A CN113237894A CN202110506251.7A CN202110506251A CN113237894A CN 113237894 A CN113237894 A CN 113237894A CN 202110506251 A CN202110506251 A CN 202110506251A CN 113237894 A CN113237894 A CN 113237894A
- Authority
- CN
- China
- Prior art keywords
- ceramic tile
- cracks
- crack
- repetitive
- tile green
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 104
- 230000007547 defect Effects 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 230000003252 repetitive effect Effects 0.000 claims description 41
- 238000001035 drying Methods 0.000 claims description 35
- 239000003921 oil Substances 0.000 claims description 21
- 238000003825 pressing Methods 0.000 claims description 14
- 239000010720 hydraulic oil Substances 0.000 claims description 13
- 239000010705 motor oil Substances 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 10
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000001680 brushing effect Effects 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 230000001788 irregular Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/388—Ceramics
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Ceramic Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a method for detecting crack defects of ceramic tile green bodies, which comprises the following specific steps: s1) taking N dried ceramic tile green bodies; s2) respectively brushing penetrating oil on four sides of the ceramic tile green body, and checking and recording the crack position, the crack shape and the crack size of each side; s3) repeatedly cracking the same in crack position, crack shape and crack size in each side of the N ceramic tile green bodies through list analysis; s4) respectively finding out the mechanical defect positions of the ceramic tile green body corresponding to the positions of the repeated cracks. The detection method provided by the invention is simple to operate, convenient and effective to observe, and high in detection sensitivity.
Description
Technical Field
The invention belongs to the technical field of ceramic tile production, and particularly relates to a method for detecting crack defects of ceramic tile green bodies.
Background
The ceramic tile green body comprises a base material layer and a surface material layer, wherein the surface material layer is also called a micro powder layer, the surface of the micro powder layer after the pressed green body is pushed out of a die cavity is provided with a layer of attached soil, whether crack defects exist in the cloth on the surface can not be directly detected and discovered by naked eyes, and in the prior art, the crack defects on the surface of the ceramic tile green body can only be detected and discovered after the ceramic tile green body is fired and polished.
Because of the material distribution or powder distribution of the press, cracks can be generated on the edge of the ceramic green body, and the cracks can also be generated when the drying system is not properly set, so that the cracks of the dried ceramic green body are not easy to find, and the defects generated by the pressing process or the drying process are not easy to distinguish, which increases troubles for the quality control of the subsequent processes and has serious quality risks.
Disclosure of Invention
The invention aims to provide a simple and visual detection method for crack defects of ceramic tile green bodies, which is simple and effective in operation method and high in reliability.
In order to achieve the purpose, the invention adopts the following technical scheme:
the method for detecting the crack defects of the ceramic tile green body comprises the following specific steps:
s1) taking N dried ceramic tile green bodies, wherein N is more than or equal to 3, and setting the front end side edge, the right side edge, the rear end side edge and the left side edge of each ceramic tile green body relative to the demolding direction as A, B, C and D respectively;
s2) coating penetrating oil on the corresponding An side, Bn side, Cn side and Dn side of the nth ceramic tile green body, wherein: n is 1, 2, and N, and the crack position, the crack shape and the crack size of each edge are checked and recorded;
s3) performing tabulation analysis on the found N ceramic tile green compacts, wherein the crack positions, the crack shapes and the crack sizes of the A1-AN side, the B1-BN side, the C1-CN side and the D1-DN are the same, and the A side repetitive cracks, the B side repetitive cracks, the C side repetitive cracks and the D side repetitive cracks are all the same;
s4) respectively finding out the positions of the mechanical defects of the green ceramic tile pressing equipment corresponding to the positions of the A-edge repetitive cracks, the B-edge repetitive cracks, the C-edge repetitive cracks and the D-edge repetitive cracks.
Preferably, the penetrating oil is hydraulic oil or engine oil.
Specifically, the ceramic tile green body is the ceramic tile green body with the surface temperature of 130-150 ℃.
Further, the method also comprises the following steps:
s5) obtaining the mechanical defect position according to the step S4), analyzing the defects existing in the mechanical defect position, repairing the mechanical defects existing in the corresponding position of the pressing equipment, and adjusting the operation parameters of the pressing equipment;
s6), after the repair and adjustment are completed, the pressing equipment is restarted to re-press a batch of ceramic tile green bodies, and the specifications and the blanks of the ceramic tile green bodies are the same as those of the ceramic tile green bodies in the step S1);
s7) taking N ceramic tile green bodies re-pressed and dried in the step S6), and repeatedly executing the steps S1) -S6) until the A-side repetitive cracks, the B-side repetitive cracks, the C-side repetitive cracks and the D-side repetitive cracks disappear.
Further, between the steps S5) and S6), a step S51) is included for analyzing factors which cause improper setting of drying parameters caused by non-repetitive cracks of the A1-AN side, the B1-BN side, the C1-CN side and the D1-DN side of the N ceramic tile green bodies, and setting parameters of a drying kiln for drying the ceramic tile green bodies are adjusted.
Specifically, the mechanical defects include mold edge, mold gap, and discharge nozzle misalignment.
Specifically, the set parameters include a drying temperature, a wind speed, a humidity and a drying line running speed.
The invention has the beneficial effects that: the detection principle of the method for detecting the crack defect of the ceramic tile green body is that the crack of the ceramic tile green body is detected in a nondestructive mode through a permeation method, the crack is detected by utilizing the capillary phenomenon that the capillary gap absorbs the permeation oil through the permeation oil and the capillary gap between the permeation oil and the ceramic tile green body, the permeation of the lead-free engine oil or the hydraulic oil to the ceramic green body is strong, the lead-free engine oil or the hydraulic oil can permeate to the bottom of the ceramic tile green body along the crack, the crack is narrow and remarkable in capillary phenomenon, an inspector brushes the hydraulic oil and observes the ceramic tile green body, the crack containing the permeation oil forms lines on the surface of the green body when observing the ceramic tile green body with obvious oil absorption phenomenon and sudden color deepening, and therefore the shape of the crack is displayed. Furthermore, the invention indicates that the cracks with repeated reproducibility are caused by mechanical defects, and the irregular cracks without repeated reproducibility are generated in the drying process.
The invention can effectively solve the technical problems that the cracks of the ceramic green body in the prior art are not easy to find, and the defects caused by the pressing procedure or the drying procedure are not easy to distinguish, so that the quality control of the subsequent procedures is troubled.
Drawings
FIG. 1 is a flow chart of the operation of the method for detecting crack defects in green ceramic tiles of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solution of the present invention is further described with reference to fig. 1 and the detailed description thereof.
The method for detecting the crack defects of the ceramic tile green body comprises the following specific steps:
s1) taking N dried ceramic tile green bodies, wherein N is more than or equal to 3, and setting the front end side edge, the right side edge, the rear end side edge and the left side edge of each ceramic tile green body relative to the demolding direction as A, B, C and D respectively;
s2) coating penetrating oil on the corresponding An side, Bn side, Cn side and Dn side of the nth ceramic tile green body, wherein: n is 1, 2, and N, and the crack position, the crack shape and the crack size of each edge are checked and recorded;
s3) performing tabulation analysis on the found N ceramic tile green compacts, wherein the crack positions, the crack shapes and the crack sizes of the A1-AN side, the B1-BN side, the C1-CN side and the D1-DN are the same, and the A side repetitive cracks, the B side repetitive cracks, the C side repetitive cracks and the D side repetitive cracks are all the same;
s4) respectively finding out the positions of the mechanical defects of the green ceramic tile pressing equipment corresponding to the positions of the A-edge repetitive cracks, the B-edge repetitive cracks, the C-edge repetitive cracks and the D-edge repetitive cracks.
The detection principle of the method for detecting the crack defect of the ceramic tile green body is that the crack of the ceramic tile green body is detected in a nondestructive mode through a permeation method, the crack is detected by utilizing the capillary phenomenon that the capillary gap absorbs the permeation oil through the permeation oil and the capillary gap between the permeation oil and the ceramic tile green body, the permeation of the lead-free engine oil or the hydraulic oil to the ceramic green body is strong, the lead-free engine oil or the hydraulic oil can permeate to the bottom of the ceramic tile green body along the crack, the crack is narrow and remarkable in capillary phenomenon, an inspector brushes the hydraulic oil and observes the ceramic tile green body, the crack containing the permeation oil forms lines on the surface of the green body when observing the ceramic tile green body with obvious oil absorption phenomenon and sudden color deepening, and therefore. The detection method provided by the invention is simple to operate, convenient and effective to observe, and high in detection sensitivity.
The cracks of the ceramic tile green body comprise regularly and repeatedly reproduced cracks and irregularly and randomly appeared cracks, the regularly and repeatedly reproduced cracks (namely the repeated cracks) are always repeatedly generated at a certain same part of the green body, and the position, the shape and the size are basically consistent; irregular cracks (hereinafter referred to as non-repetitive cracks) are randomly generated at any position of the brick without repeatability, and have different positions, shapes and sizes. Regularly and repeatedly reproduced cracks are generally caused by mechanical defects, and can be found by carefully observing the mechanical surface and the operation condition of each part, and irregular cracks need to be solved by changing a drying schedule.
Preferably, the penetrating oil is hydraulic oil or engine oil.
Hydraulic oil or machine oil, specific gravity is big, fills the effectual in clearance, and is tasteless and difficult volatile, can not be to operating personnel's the harm of causing the health to can filter recovery used repeatedly.
After hydraulic oil or engine oil is absorbed into the ceramic tile green body, the appearance surface of the ceramic tile green body is obviously discolored, the color difference between the blank color and the oil color is large, the existence of cracks can be easily found by visual observation, the shape of the cracks is clear, the observation is convenient, and the hydraulic oil or the engine oil has good temperature-resistant viscosity and fluidity and is suitable for being used in the production operation environment of the ceramic tile.
Specifically, the ceramic tile green body is the ceramic tile green body with the surface temperature of 130-150 ℃.
And after being pressed, the ceramic tile green body enters a drying kiln for drying, the temperature of the drying kiln is 190 ℃ plus 160 ℃, the surface temperature of the ceramic tile green body discharged out of the kiln is 150 ℃ plus 130 ℃, and hydraulic oil or engine oil has good viscosity and fluidity at 150 ℃ plus 130 ℃, so that the ceramic tile green body is suitable for crack detection of the ceramic tile green body just leaving the drying kiln.
The penetrating oil with better viscosity and fluidity at the temperature of 130-150 ℃ is used, crack detection can be carried out on the ceramic tile green body just leaving the drying kiln, the cooling time can be saved, and the production efficiency can be improved.
Further, the method also comprises the following steps:
s5) obtaining the mechanical defect position according to the step S4), analyzing the defects existing in the mechanical defect position, repairing the mechanical defects existing in the corresponding position of the pressing equipment, and adjusting the operation parameters of the pressing equipment;
s6), after the repair and adjustment are completed, the pressing equipment is restarted to re-press a batch of ceramic tile green bodies, and the specifications and the blanks of the ceramic tile green bodies are the same as those of the ceramic tile green bodies in the step S1);
s7) taking N ceramic tile green bodies re-pressed and dried in the step S6), and repeatedly executing the steps S1) -S6) until the A-side repetitive cracks, the B-side repetitive cracks, the C-side repetitive cracks and the D-side repetitive cracks disappear.
Before the ceramic tile green bodies are produced in batches, the repeated crack defects of the ceramic tile green bodies are found out by the method, the equipment mechanical defects or parameter setting defects corresponding to the defect parts can be analyzed and found out in a targeted manner, the existing defects are corrected to improve the quality of the ceramic tile green bodies produced in batches, and loss and waste caused by batch firing are avoided.
Further, between the steps S5) and S6), a step S51) is included for analyzing factors which cause improper setting of drying parameters caused by non-repetitive cracks of the A1-AN side, the B1-BN side, the C1-CN side and the D1-DN side of the N ceramic tile green bodies, and setting parameters of a drying kiln for drying the ceramic tile green bodies are adjusted.
The non-repetitive cracks are caused by that the ceramic tile green bodies generate uneven shrinkage force due to improper parameter setting in the drying process of the ceramic tile green bodies, so that irregular cracks are formed, and the problem needs to be solved by changing a drying system, namely adjusting the setting parameters of a drying kiln.
Specifically, the mechanical defects include mold edge, mold gap, and discharge nozzle misalignment.
Mechanical defects such as die edge, die gap, discharge nozzle offset and the like damage the surface of the ceramic tile green body, and cracks appear on the surface of the ceramic tile green body.
The cracks generated by the mechanical damage are generated by the collision between the ceramic tile green body and equipment in operation, and also include cracks generated by bumping due to unstable operation, and the positions of the cracks are relatively fixed.
Specifically, the set parameters include a drying temperature, a wind speed, a humidity and a drying line running speed.
Drying temperature, wind speed, humidity and drying line operating speed all can influence the drying speed of ceramic tile green compact, make the shrinkage force of ceramic tile green compact distribute evenly through the adjustment to avoid producing internal stress, the production of reducible irregular crackle.
For example, when the drying temperature curve is improperly set, the drying temperature at a certain position sharply rises and then sharply falls, a hard shell is formed on the surface of the dried green body, a diffusion channel of water in the ceramic tile green body is blocked, the time for water in the ceramic tile green body to diffuse is not enough, and the diffusion channel is not available, so that the green body deforms and generates internal stress, and further irregular cracks are generated, therefore, the drying temperature curve is gentle, and the time is reserved for the diffusion of the water in the ceramic tile green body.
In conclusion, the detection principle of the method for detecting the crack defects of the ceramic tile green body is that the cracks of the ceramic tile green body are detected in a nondestructive mode through a permeation method, the cracks are detected through a capillary gap between the permeation oil and the ceramic tile green body and the capillary phenomenon that the capillary gap absorbs the permeation oil, and the cracks containing the permeation oil form lines on the surface of the green body, so that the shape of the cracks is displayed; furthermore, the invention indicates that the cracks with repeated reproducibility are caused by mechanical defects, and the irregular cracks without repeated reproducibility are generated in the drying process.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (7)
1. The method for detecting the crack defect of the ceramic tile green body is characterized by comprising the following specific steps of:
s1) taking N dried ceramic tile green bodies, wherein N is more than or equal to 3, and setting the front end side edge, the right side edge, the rear end side edge and the left side edge of each ceramic tile green body relative to the demolding direction as A, B, C and D respectively;
s2) coating penetrating oil on the corresponding An side, Bn side, Cn side and Dn side of the nth ceramic tile green body, wherein: n is 1, 2, and N, and the crack position, the crack shape and the crack size of each edge are checked and recorded;
s3) performing tabulation analysis on the found N ceramic tile green compacts, wherein the crack positions, the crack shapes and the crack sizes of the A1-AN side, the B1-BN side, the C1-CN side and the D1-DN are the same, and the A side repetitive cracks, the B side repetitive cracks, the C side repetitive cracks and the D side repetitive cracks are all the same;
s4) respectively finding out the positions of the mechanical defects of the green ceramic tile pressing equipment corresponding to the positions of the A-edge repetitive cracks, the B-edge repetitive cracks, the C-edge repetitive cracks and the D-edge repetitive cracks.
2. The method for detecting crack defects of a green ceramic tile as claimed in claim 1, wherein the penetrating oil is hydraulic oil or engine oil.
3. The method for detecting the crack defect of the ceramic tile green body as claimed in claim 1, wherein the ceramic tile green body is a ceramic tile green body with a surface temperature of 130-150 ℃.
4. The method for detecting crack defects of a green ceramic tile according to any one of claims 1 to 3, further comprising the steps of:
s5) obtaining the mechanical defect position according to the step S4), analyzing the defects existing in the mechanical defect position, repairing the mechanical defects existing in the corresponding position of the pressing equipment, and adjusting the operation parameters of the pressing equipment;
s6), after the repair and adjustment are completed, the pressing equipment is restarted to re-press a batch of ceramic tile green bodies, and the specifications and the blanks of the ceramic tile green bodies are the same as those of the ceramic tile green bodies in the step S1);
s7) taking N ceramic tile green bodies re-pressed and dried in the step S6), and repeatedly executing the steps S1) -S6) until the A-side repetitive cracks, the B-side repetitive cracks, the C-side repetitive cracks and the D-side repetitive cracks disappear.
5. The method for detecting crack defects of green ceramic tile bodies as claimed in claim 4, wherein between the steps S5) and S6), the method further comprises the step S51) of analyzing factors causing improper setting of drying parameters resulting from non-repetitive cracks of the A1-AN side, the B1-BN side, the C1-CN side and the D1-DN side of the N green ceramic tile bodies, and adjusting the setting parameters of a drying kiln for drying the green ceramic tile bodies.
6. The method for detecting crack defects in green ceramic tiles as claimed in claim 4, wherein the mechanical defects include die sweep, die gap and tap offset.
7. The method for detecting the crack defects of the green ceramic tile as claimed in claim 5, wherein the setting parameters comprise drying temperature, wind speed, humidity and drying line running speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110506251.7A CN113237894A (en) | 2021-05-10 | 2021-05-10 | Method for detecting crack defects of ceramic tile green body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110506251.7A CN113237894A (en) | 2021-05-10 | 2021-05-10 | Method for detecting crack defects of ceramic tile green body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113237894A true CN113237894A (en) | 2021-08-10 |
Family
ID=77133108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110506251.7A Pending CN113237894A (en) | 2021-05-10 | 2021-05-10 | Method for detecting crack defects of ceramic tile green body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113237894A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB684021A (en) * | 1945-07-23 | 1952-12-10 | Joseph Lyman Switzer | Improvements in or relating to a method of treating an article to discover flaws, and a testing agent therefor |
| CN103604753A (en) * | 2013-10-22 | 2014-02-26 | 内蒙古包钢钢联股份有限公司 | Method for detecting subsurface crack of casting blank |
| CN104859363A (en) * | 2015-04-21 | 2015-08-26 | 许瑞峰 | Solid porcelain plastic and preparation technology thereof |
-
2021
- 2021-05-10 CN CN202110506251.7A patent/CN113237894A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB684021A (en) * | 1945-07-23 | 1952-12-10 | Joseph Lyman Switzer | Improvements in or relating to a method of treating an article to discover flaws, and a testing agent therefor |
| CN103604753A (en) * | 2013-10-22 | 2014-02-26 | 内蒙古包钢钢联股份有限公司 | Method for detecting subsurface crack of casting blank |
| CN104859363A (en) * | 2015-04-21 | 2015-08-26 | 许瑞峰 | Solid porcelain plastic and preparation technology thereof |
Non-Patent Citations (6)
| Title |
|---|
| 任素青: "涡流探伤在检测连杆耳销缺陷中的应用", 《内燃机车》 * |
| 公方杰: "瓷质砖裂纹缺陷分析", 《中国陶瓷工业》 * |
| 孙殿寿: "渗透检验技术的发展", 《无损检测》 * |
| 应启宏: "陶瓷制品微裂纹检查方法的研究", 《陶瓷》 * |
| 张鹏珍 等: "环保可排放型水基着色渗透液的研制及应用", 《无损检测》 * |
| 许宏伟 等: "发电厂滑动轴承轴瓦脱胎缺陷渗透检测优化", 《云南电力技术》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1657038A2 (en) | Method of producing ceramic body | |
| CN113237894A (en) | Method for detecting crack defects of ceramic tile green body | |
| CN108827997A (en) | The evaluation method of clay and the manufacturing method of extrusion molding body | |
| CN110171057B (en) | Hole plugging device and method for wall-flow honeycomb filter body | |
| US20210107186A1 (en) | Cooling method and cooling device of molded resin products | |
| US20070252310A1 (en) | Method for manufacturing a plugged honeycomb filter with a single firing cycle | |
| CN210127884U (en) | Wall flow type honeycomb filter body plugging device | |
| CN205969415U (en) | Ceramic tile molding mould | |
| CN114769487B (en) | Forming device and forming method for stainless steel long pipe type forge piece | |
| KR101932510B1 (en) | Manufacturing method of air-conditioner chiller extrusion using water pressure | |
| CN112378820B (en) | Novel additive manufacturing powder spreading performance detection device and method | |
| US20210379809A1 (en) | Method and system for monitoring states of injection molding machine | |
| CN114589264A (en) | Processing system and processing method of thin-wall austenitic stainless steel seal head | |
| CN111408661B (en) | Extrusion forming process for stepped hole of jacking head seat of hydraulic jack | |
| CN212170830U (en) | Porcelain insulator slip casting device | |
| CN104889365B (en) | A kind of metal-mold low-pressure casting exhaust apparatus and method for exhausting | |
| CN114486120A (en) | Full-automatic pipe leakage detection device and detection method thereof | |
| CN204367144U (en) | A kind of energy-conserving and environment-protective vented mould | |
| CN210336352U (en) | Floor tile mold | |
| CN112743662A (en) | Compression molding method and equipment for burning-bearing sagger and burning-bearing sagger | |
| CN117720349B (en) | Manufacturing process of yttrium oxide nozzle, dry-pressing forming die and dry-pressing forming equipment | |
| EP0968139B1 (en) | Method of manufacturing a hollow tv product of glass | |
| CN221619554U (en) | Diamond synthetic column crusher | |
| CN214490269U (en) | Carbon bonding tool for gear ring of automobile synchronizer | |
| CN115420615B (en) | Double-station isostatic pressing test machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210810 |
|
| RJ01 | Rejection of invention patent application after publication |