CN115856250A - Method for detecting internal defects of hard alloy extruded blank - Google Patents
Method for detecting internal defects of hard alloy extruded blank Download PDFInfo
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- CN115856250A CN115856250A CN202211653441.2A CN202211653441A CN115856250A CN 115856250 A CN115856250 A CN 115856250A CN 202211653441 A CN202211653441 A CN 202211653441A CN 115856250 A CN115856250 A CN 115856250A
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Abstract
The invention discloses a method for detecting internal defects of a hard alloy extruded blank, which relates to the technical field of hard alloy extruded blank detection, and comprises the following steps of S1, firstly, establishing a detection production line of the hard alloy extruded (or pressed) blank; s2, conveying the dried hard alloy pressed blank into an alcohol bath for detection, and finally air-drying the detected hard alloy pressed blank and conveying the dried hard alloy pressed blank to the next production process; and S3, observing the change of the hard alloy pressed compact in the alcohol bath, if continuous bubbles emerge from the surface of the hard alloy pressed compact, indicating that the inside of the pressed compact has defects, and if no bubbles emerge from the surface of the hard alloy pressed compact, indicating that the product has no internal cracks, and belonging to a qualified semi-finished product. The method for detecting the internal defects of the extruded pressed blank simply and intuitively discovers the internal defects of the product and avoids the waste products caused by the fact that the semi-finished product with the internal defects is transferred to the next production process.
Description
Technical Field
The invention relates to the technical field of detection of hard alloy extruded blanks, in particular to a method for detecting internal defects of a hard alloy extruded blank.
Background
The reasons why the green compact defects occur are: after the hard alloy extrusion (or pressing) blank is formed, internal stress is gradually released after the external environment is changed, and if the production process conditions are improperly controlled, the internal stress release speed exceeds the limit, the internal defect is generated by cracking. Therefore, the process production flow of the hard alloy extrusion bar determines that the inside of the hard alloy extrusion bar has defects of cracks, layering and the like, and the defects have fatal influence on the service life of the hard alloy cutter, so that the detection of the semi-finished product pressed compact is very important for preventing the finished product from having internal defects.
At present, the detection of hard alloy semi-finished products is mainly carried out in the industry in an artificial mode and by observing through a low power microscope, but internal defects (such as open cracks, layering and the like, wherein the cracks or layering extend from the inside to the surface) of pressed compacts are difficult to completely eliminate under a microscope, and the defects are not found until the pressed compacts are produced into finished products or end customers, so that serious loss is caused.
Disclosure of Invention
The invention provides a rapid and effective detection method for rapidly detecting defects or microdefects by utilizing the principle that when absolute alcohol has strong permeability and if the interior of a semi-finished product (particularly the superficial part of a hard alloy blank) has defects, alcohol generates continuous bubbles after a large amount of income of micropores among pressed particles.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for detecting internal defects of a hard alloy extrusion blank comprises the following steps:
s1, firstly, establishing a detection production line of a hard alloy extruded bar;
s2, conveying the dried hard alloy pressed blank into an alcohol tank for detection, and finally air-drying the detected hard alloy pressed blank and conveying the hard alloy pressed blank to the next production process;
and S3, observing the change of the hard alloy pressed compact in the alcohol bath, wherein if continuous bubbles emerge from the surface of the hard alloy pressed compact, the pressed compact has defects inside, and if no continuous bubbles are generated from the surface of the hard alloy, the product is a qualified semi-finished product.
Preferably, in S1, the in-process of setting up the detection line, the output of detection line is provided with air-dry equipment, and there is a plurality of alcohol pond or places the alcohol groove of alcohol at the air-dry equipment front end of detection line, and the detection line still including the conveying equipment who carries the carbide pressed compact, and this conveying equipment passes alcohol pond and air-dry equipment in proper order.
Preferably, in S2, a transparent glass block is adopted in the front of the alcohol pool, a movable transparent glass block is arranged above the alcohol pool, the movable camera rotates to one side when the hard alloy pressed blank is conveyed, and the movable camera moves to the upper part of the hard alloy pressed blank and aligns to the upper surface of the hard alloy pressed blank when the hard alloy pressed blank is conveyed into the alcohol pool for detection.
Preferably, the detection line further comprises a computer device connected with the plurality of cameras, and the computer device is used for displaying pictures shot by the cameras in real time, collecting positions of the hard alloy pressed compact when bubbles are emitted from the surface of the hard alloy pressed compact in real time, and marking the positions.
Preferably, the detection line comprises a marking device for marking bubbling places on the surface of the cemented carbide compacts.
Preferably, after the hard alloy pressed compact is detected in the alcohol bath, the hard alloy pressed compact is conveyed to air drying equipment for air drying treatment.
Preferably, in S3, when observing whether bubbles are emitted from the surface of the hard alloy pressed compact in the alcohol bath, a time range of the bubbles emitted from the surface of the hard alloy pressed compact with defects is determined by means of sampling investigation, and the time for moving the hard alloy pressed compact out of the alcohol bath is determined according to the actual range.
Compared with the prior art, the invention has the following advantages:
according to the invention, the dried hard alloy is extruded (or pressed) to form a blank, and the blank is completely immersed in alcohol, if the pressed blank has a defect, the defect can be continuously blown out of the defect due to the good permeability of the alcohol, so that the defect in the product can be visually known, the detection is more convenient, the cost is low, and meanwhile, the pressed blank can be matched with the use of a production line in the detection process, so that the pressed blank can still be transferred to the next process for production after being immersed in the alcohol for a certain time, and the quality control of the product is not influenced.
Drawings
FIG. 1 is a flow chart of a method for detecting internal defects of a cemented carbide extruded blank according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the 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 construed as limiting the present invention.
Referring to fig. 1, a method for detecting internal defects of a hard alloy extrusion blank comprises the following steps:
s1, firstly, establishing a detection production line for extruding (or pressing) a hard alloy blank bar;
s2, conveying the dried hard alloy pressed blank into an alcohol bath for detection, and finally air-drying the detected hard alloy pressed blank and conveying the dried hard alloy pressed blank to the next production process;
and S3, observing the change of the hard alloy pressed compact in the alcohol bath, wherein if continuous bubbles emerge from the surface of the hard alloy pressed compact, the defect exists in the pressed compact, and if no continuous bubbles are generated from the surface of the hard alloy, the product is a qualified semi-finished product.
In S1, the in-process of establishing the detection line, the detection line output is provided with air-dry equipment, detection line air-dry equipment front end is provided with a plurality of alcohol pond or places the alcohol tank that has the alcohol, can realize once only detecting a plurality of extrusion pressed compacts, and the detection line still including carrying carbide pressed compact conveying equipment, and this conveying equipment passes alcohol pond and air-dry equipment in proper order, this conveying equipment is at the in-process of carrying the extrusion pressed compact, adopt the support that lifts that suits with the extrusion pressed compact, place the pressed compact and carry in the support, and this support is in entering into the alcohol pond, cover the pressed compact surface as far as possible. Thereby improving the detection accuracy.
In S2, a transparent glass block is adopted in the front of the alcohol tank, a movable transparent glass block is arranged above the alcohol tank, the movable camera rotates to one side when the hard alloy pressed blank is conveyed, and moves to the position above the hard alloy pressed blank when the hard alloy pressed blank is input into the alcohol tank for detection and aligns to the upper surface of the hard alloy pressed blank.
The detection line is still including being used for the computer equipment that is connected with a plurality of camera, this computer equipment is used for showing the picture that the camera was shot in real time, and the position is located when gathering carbide pressed compact surface gassing in real time, the camera adopts prior art with computer equipment's real-time conveying, and at the in-process of transmission, can also install image acquisition module in computer equipment, in order to carry out automatic collection to transmission video, directly gather the image of gassing, and then can see the bubble fast and emerge, reduce the manual observation cost and reduce the problem of observing the omission, and mark the collection result.
The detection line includes the mark equipment that is used for the bubbling department on mark carbide pressed compact surface, like surface spraying equipment or spout a yard equipment, can mark the carbide pressed compact that goes wrong, makes things convenient for the staff to take out the carbide pressed compact that will have a problem.
And after the hard alloy pressed compact is detected in the alcohol tank, the hard alloy pressed compact is conveyed out of the alcohol tank and then conveyed to air drying equipment for air drying treatment, and after the air drying is finished, the hard alloy pressed compact is conveyed to the next production procedure.
In S3, when observing whether bubbles appear on the surface of the hard alloy pressed compact in the alcohol tank, firstly determining the time range of the bubbles appearing on the surface of the hard alloy pressed compact with defects in a sampling investigation mode, and determining the time for moving the hard alloy pressed compact out of the alcohol tank according to the actual range, so that when the device is used on a production line, the waiting time for observation can be saved, and continuous and quick detection processing on the production line is realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A method for detecting internal defects of a hard alloy extrusion blank is characterized by comprising the following steps:
s1, firstly, establishing a detection production line of a hard alloy extrusion blank;
s2, conveying the dried hard alloy pressed blank into an alcohol bath for detection, and finally air-drying the detected hard alloy pressed blank and conveying the dried hard alloy pressed blank to the next production process;
and S3, observing the change of the hard alloy pressed compact in the alcohol bath, wherein if continuous bubbles emerge from the surface of the hard alloy pressed compact, the defect exists in the pressed compact, and if no continuous bubbles are generated from the surface of the hard alloy, the product is a qualified semi-finished product.
2. The method for detecting the internal defects of the hard alloy extruded blanks is characterized in that in the step S1, in the process of establishing the detection line, an air drying device is arranged at the output end of the detection line, a plurality of alcohol pools or alcohol tanks containing alcohol are arranged at the front end of the air drying device of the detection line, the detection line further comprises a conveying device for conveying the hard alloy pressed blanks, and the conveying device sequentially passes through the alcohol pools and the air drying device.
3. The method according to claim 2, wherein in step S2, a transparent glass block is used in front of the alcohol bath, a movable transparent glass block is installed above the alcohol bath, the movable camera rotates to one side when the hard alloy pressed blank is conveyed, and moves to above the hard alloy pressed blank and aligns with the upper surface of the hard alloy pressed blank when the hard alloy pressed blank is conveyed into the alcohol bath for detection.
4. The method for detecting the internal defects of the hard alloy extrusion blanks as claimed in claim 3, wherein the detection line further comprises a computer device connected with a plurality of cameras, the computer device is used for displaying pictures shot by the cameras in real time, and collecting positions of the hard alloy extrusion blanks when bubbles are emitted from the surfaces of the hard alloy extrusion blanks in real time and marking the positions.
5. The method as claimed in claim 4, wherein the inspection line includes a marking device for marking the bubbling place on the surface of the cemented carbide compact.
6. The method as claimed in claim 5, wherein the cemented carbide extrusion blank is transported to an air drying device for air drying after the detection in the alcohol bath.
7. The method for detecting the internal defects of the hard alloy extrusion blank according to claim 1, wherein in S3, when observing whether the surface of the hard alloy pressed blank bubbles in the alcohol bath, the time range of the bubbles on the surface of the hard alloy pressed blank with the defects is determined by means of sampling investigation, and the time for moving the hard alloy pressed blank out of the alcohol bath is determined according to the actual range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211653441.2A CN115856250A (en) | 2022-12-21 | 2022-12-21 | Method for detecting internal defects of hard alloy extruded blank |
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| CN202211653441.2A CN115856250A (en) | 2022-12-21 | 2022-12-21 | Method for detecting internal defects of hard alloy extruded blank |
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| CN115856250A true CN115856250A (en) | 2023-03-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117252486A (en) * | 2023-11-14 | 2023-12-19 | 长春师范大学 | Automobile part defect detection method and system based on Internet of things |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117252486A (en) * | 2023-11-14 | 2023-12-19 | 长春师范大学 | Automobile part defect detection method and system based on Internet of things |
| CN117252486B (en) * | 2023-11-14 | 2024-02-02 | 长春师范大学 | Automobile part defect detection method and system based on Internet of things |
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