CN114473372B - Manufacturing method of wear-resistant threaded block suitable for flaw detection wear-resistant block - Google Patents
Manufacturing method of wear-resistant threaded block suitable for flaw detection wear-resistant block Download PDFInfo
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- CN114473372B CN114473372B CN202111603601.8A CN202111603601A CN114473372B CN 114473372 B CN114473372 B CN 114473372B CN 202111603601 A CN202111603601 A CN 202111603601A CN 114473372 B CN114473372 B CN 114473372B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a manufacturing method of a wear-resistant thread block suitable for a flaw detection wear-resistant block, which comprises the following steps: a contact portion and a threaded portion; one side surface of the contact part is inclined at 20-35 degrees relative to the direction of the threaded part; a transition surface is arranged at the junction of one side surface adjacent to the inclined surface and the top surface. The alloy with Rockwell hardness greater than 90 is processed, the integrated super hard material wear-resistant threaded block is directly formed, the wear resistance of the integral wear-resistant block is increased, the number of times of replacing threads is reduced, and the wear resistance of the wear-resistant block and the wear-resistant threaded block are matched.
Description
Technical Field
The invention relates to the technical field of wear-resistant blocks of flaw detection instruments, in particular to a manufacturing method of a wear-resistant threaded block suitable for a flaw detection wear-resistant block.
Background
In the field of flaw detection equipment, in general, eddy current flaw detection is performed on an object to be inspected, which is made of a metal material, an ac current is supplied from an ac power source to an exciting coil, eddy currents are induced in the vicinity of the surface of the object to be inspected, and a reaction magnetic field generated by the eddy currents is detected by a detection coil. If there is a defect near the surface of the object to be inspected, the flow of the eddy current changes due to the defect, and the strength and distribution of the reaction magnetic field generated by the eddy current also change, so that the existence of the defect can be detected, the contact surface of the general instrument needs to be additionally provided with a wear-resistant block, the wear-resistant block is usually not an integral body but is formed by splicing a plurality of wear-resistant blocks, and in the splicing region, the wear-resistant threaded blocks with threads are needed to be connected; the existing wear-resistant threaded block is often of a composite type, a wear-resistant material is adopted for a contact part, an easy-to-process common material is adopted for a threaded part, after a wear-resistant surface is worn, the wear resistance is rapidly reduced, the detection stability is affected, the replacement frequency is too high, and the surface height of a new wear-resistant threaded block is not matched with that of the wear-resistant block.
Disclosure of Invention
The invention aims to provide a manufacturing method of a wear-resistant threaded block suitable for flaw detection of a wear-resistant block.
To achieve the above object, the present invention adopts the following:
a manufacturing method of a wear-resistant thread block suitable for flaw detection wear-resistant blocks comprises the following steps:
(1) Selecting a main material: selecting a high-hardness material with the hardness of HRA90 or more, and a square or round bar of hard alloy, ceramic or silicon carbide;
(2) Preliminary cutting: cutting the selected main material into a plurality of equidistant section blanks;
(3) Preliminary polishing: polishing one end of a cutting surface of the segment blank through a polishing instrument;
(4) Rough machining: duan Pi is cut to form a wear-resistant screw blank by the segment blank, and the wear-resistant screw blank comprises a cylindrical part and a tip part;
(5) And (3) thread processing: clamping the rough machined segment blank on tool grinding equipment or special thread grinding equipment, and performing thread grinding on the cylindrical part;
(6) And (3) finishing: cutting the end head of the segment blank to enable one of the side surfaces of the end head to be an inclined surface; the cylindrical part is connected with the end head part in a curved surface manner to manufacture a drawing-size wear-resistant threaded block;
(7) Size detection: and detecting the outer diameter, the inner diameter, the middle diameter, the screw pitch, the lead, the tooth angle and the thread lead angle of the wear-resistant threaded block, and packaging the wear-resistant threaded block with the proper size.
Preferably, the sanding apparatus is a grinding wheel sander.
Preferably, the hard alloy is tungsten steel, and the mass percentage is as follows: WC and CO:9%, C:0.5%, cr:1.5%, cu:1%, mo:2%, mi:0.3%, ni:0.25%, fe: the balance.
Preferably, the thread cross section of the wear-resistant thread block is in an equilateral triangle shape.
Preferably, when the section blank is cut, the rotating speed of the cutting tool is 5000r/min, and the cutting amount of each feeding is 0.12-0.15mm.
A wear resistant screw block comprising: a contact portion and a threaded portion; one side surface of the contact part is inclined at 20-35 degrees relative to the direction of the threaded part; a transition surface is arranged at the junction of one side surface adjacent to the inclined surface and the top surface
Preferably, the end part of the thread part of the wear-resistant thread block is in a truncated cone shape.
The invention has the following advantages:
the alloy with Rockwell hardness greater than 90 is processed, the integrated super hard material wear-resistant threaded block is directly formed, the wear resistance of the integral wear-resistant block is increased, the number of times of replacing threads is reduced, and the wear resistance of the wear-resistant block and the wear-resistant threaded block are matched.
The wear-resistant threaded block made of the superhard material is simple and convenient to install and fix, complicated procedures such as welding and pressing are not needed, and the superhard material with the hardness of more than HRA80 can be directly processed and manufactured into the integrated wear-resistant threaded block by using tool grinding equipment, such as hard alloy, ceramic and the like.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the drawings.
FIG. 1 is a schematic structural diagram of a method for manufacturing a wear-resistant screw block suitable for flaw detection of wear-resistant blocks according to the present invention.
In the drawings, each reference numeral is:
1-abrasion-resistant screw thread block, 2-contact part, 3-screw thread part and 4-transition surface.
Detailed Description
In order to more clearly illustrate the present invention, the present invention will be further described with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this invention is not limited to the details given herein.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, or detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, a method for manufacturing a wear-resistant screw block suitable for flaw detection of a wear-resistant block includes: the method comprises the following steps:
(1) Selecting a main material: selecting a high-hardness material with the hardness of HRA90 or more, and a square or round bar of hard alloy, ceramic or silicon carbide; the hard alloy is tungsten steel, and comprises the following components in percentage by mass: WC and CO:90%, C:0.5%, cr:1.5%, cu:1%, mo:2%, mi:0.3%, ni:0.25%, fe: the balance.
Tungsten steel (hard alloy) has a series of excellent properties of high hardness, wear resistance, better strength and toughness, heat resistance, corrosion resistance and the like, and particularly the high hardness and wear resistance of the tungsten steel are basically unchanged even at the temperature of 500 ℃, and the tungsten steel still has high hardness at 1000 ℃.
(2) Preliminary cutting: cutting the selected main material into a plurality of equidistant section blanks; sawing into section blanks according to the drawing size.
(3) Preliminary polishing: polishing one end of a cutting surface of the segment blank through a polishing instrument; the polishing apparatus is a grinding wheel polishing machine.
(4) Rough machining: duan Pi is cut to form a wear-resistant screw blank by the segment blank, and the wear-resistant screw blank comprises a cylindrical part and a tip part; when the section blank is cut, the rotating speed of the cutting tool is 5000r/min, and the cutting amount of each feeding is 0.12-0.15mm.
In particular, when cutting a segment blank, it is necessary to retract the cutter every time after feeding the cutter by 0.12mm, and cut the segment blank in the direction of replacement, that is, stepwise cut from a plurality of faces of the segment blank.
(5) And (3) thread processing: clamping the rough machined segment blank on tool grinding equipment or special thread grinding equipment, and performing thread grinding on the cylindrical part;
(6) And (3) finishing: cutting the end head of the segment blank to enable one of the side surfaces of the end head to be an inclined surface; the cylindrical part is connected with the end head part in a curved surface manner to manufacture a drawing-size wear-resistant threaded block;
size detection: and detecting the outer diameter, the inner diameter, the middle diameter, the screw pitch, the lead, the tooth angle and the thread lead angle of the wear-resistant threaded block, and packaging the wear-resistant threaded block with the proper size.
A wear resistant screw block 1 comprising: a contact portion 2 and a threaded portion 3; one side surface of the contact part 2 is inclined at 20-35 degrees relative to the direction of the threaded part 3; a transition surface 4 is arranged at the junction of the side surface adjacent to the inclined surface and the top surface.
Further, the end part of the threaded part 3 of the wear-resistant threaded block 1 is in a truncated cone shape. The thread cross section of the wear-resistant thread block 1 is in an equilateral triangle shape.
It should be understood that the foregoing examples of the present invention are provided merely for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (5)
1. The manufacturing method of the wear-resistant thread block suitable for the flaw detection wear-resistant block is characterized by comprising the following steps of:
selecting a main material: selecting a high-hardness material with the hardness of HRA90 or more, and a square or round bar of hard alloy, ceramic or silicon carbide; the hard alloy is tungsten steel, and comprises the following components in percentage by mass: WC and CO:9%, C:0.5%, cr:1.5%, cu:1%, mo:2%, mi:0.3%, ni:0.25%, fe: the balance;
preliminary cutting: cutting the selected main material into a plurality of equidistant section blanks;
preliminary polishing: polishing one end of a cutting surface of the segment blank through a polishing instrument;
rough machining: duan Pi is cut to form a wear-resistant screw blank by the segment blank, and the wear-resistant screw blank comprises a cylindrical part and a tip part;
and (3) thread processing: clamping the rough machined segment blank on tool grinding equipment or special thread grinding equipment, and performing thread grinding on the cylindrical part;
and (3) finishing: cutting the end head of the segment blank to enable one of the side surfaces of the end head to be an inclined surface; the cylindrical part is connected with the end head part in a curved surface manner to manufacture a drawing-size wear-resistant threaded block;
size detection: and detecting the outer diameter, the inner diameter, the middle diameter, the screw pitch, the lead, the tooth angle and the thread lead angle of the wear-resistant threaded block, and packaging the wear-resistant threaded block with the proper size.
2. The method of manufacturing a wear-resistant threaded block for use in flaw detection wear-resistant blocks according to claim 1, wherein said grinding tool is a grinding wheel grinder.
3. The method for manufacturing a wear-resistant screw block suitable for flaw detection wear-resistant block according to claim 1, wherein the screw section of the wear-resistant screw block is in the shape of an equilateral triangle, comprising: a contact portion and a threaded portion; one side surface of the contact part is inclined at 20-35 degrees relative to the direction of the threaded part; a transition surface is arranged at the junction of one side surface adjacent to the inclined surface and the top surface.
4. The method for manufacturing the wear-resistant threaded block suitable for the flaw detection wear-resistant block according to claim 1, wherein the rotating speed of a cutting tool is 5000r/min and the cutting amount of each feeding is 0.12-0.15mm when the segment blank is cut.
5. A method of manufacturing a wear-resistant screw block suitable for use in flaw detection wear-resistant blocks as claimed in claim 3, wherein the end of the threaded portion of the wear-resistant screw block is in the form of a truncated cone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111603601.8A CN114473372B (en) | 2021-12-24 | 2021-12-24 | Manufacturing method of wear-resistant threaded block suitable for flaw detection wear-resistant block |
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| CN202111603601.8A CN114473372B (en) | 2021-12-24 | 2021-12-24 | Manufacturing method of wear-resistant threaded block suitable for flaw detection wear-resistant block |
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| CN114473372A CN114473372A (en) | 2022-05-13 |
| CN114473372B true CN114473372B (en) | 2023-06-09 |
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| JP2006022915A (en) * | 2004-07-09 | 2006-01-26 | Amatei Inc | Nail and method of manufacturing the same |
| CN100491568C (en) * | 2007-05-14 | 2009-05-27 | 横店集团东磁股份有限公司 | Non-magnetic hard alloy with high hardness, high strength and low cost |
| CN101797685B (en) * | 2010-04-08 | 2011-12-21 | 浙江裕泰紧固件制造有限公司 | Process for manufacturing high-strength bolt |
| CN101838774A (en) * | 2010-05-10 | 2010-09-22 | 金文平 | High speed steel and productive technology thereof |
| CN102605273B (en) * | 2012-04-11 | 2013-12-25 | 长沙威斯坦冶金制品有限公司 | Steel bonded hard alloy and preparation method thereof |
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