CN115122057A - Manufacturing method of triangular ring accessory - Google Patents
Manufacturing method of triangular ring accessory Download PDFInfo
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- CN115122057A CN115122057A CN202211058675.2A CN202211058675A CN115122057A CN 115122057 A CN115122057 A CN 115122057A CN 202211058675 A CN202211058675 A CN 202211058675A CN 115122057 A CN115122057 A CN 115122057A
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- triangular ring
- manufacturing
- accessory
- adopting
- ring accessory
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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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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
A method for manufacturing the accessory of triangular ring includes such steps as blanking for determining the size of the accessory of triangular ring, bending by a bending die, flash welding, and wet continuous magnetic powder inspection. Compared with the traditional manufacturing method, the manufacturing method has the advantages that round steel is selected as a raw material, the bending tool is used for bending, the flash welding process is adopted for forming, the steps of forging, trimming, sanding and the like are omitted, the labor intensity of workers is reduced, the raw material is greatly saved, the production efficiency is improved, the cost is saved, the metal streamline is more in line with the use condition, the comprehensive performance meets the relevant requirements of a classification society, and the manufacturing method is more suitable for mass production.
Description
Technical Field
The invention relates to the field of tools for ships or mooring platforms, in particular to a manufacturing method of a triangular ring accessory.
Background
The triangular ring is used for connecting chain links in a ship system or a mooring platform and has the technical characteristics of high strength, high toughness and the like. In the prior art, a triangular ring accessory is manufactured by firstly blanking a bar into a cake shape, manufacturing a blank with fins through a forming die, removing the fins through a hot cutting or trimming die, and finally obtaining a finished product through a sanding or shot blasting mode. Although the technical requirements for operators are low, the forging has large burrs, and the burrs are cut off to cause a lot of waste materials and waste cost. Therefore, a new manufacturing method is needed to reduce material loss and improve production efficiency, and meanwhile, the product has good mechanical properties, and the surface and internal quality of the product can meet the relevant requirements of classification society.
Disclosure of Invention
The invention aims to solve the technical problems and provides a method for manufacturing a triangular ring accessory, which solves the problems of low material utilization rate and poor production efficiency of the existing forging method.
In order to achieve the technical purpose and achieve the technical requirements, the invention adopts the technical scheme that: a manufacturing method of a triangular ring accessory is characterized in that: the manufacturing method at least comprises the following steps of determining the size of the triangular ring accessory, adopting a blanking step, adopting a bending die corresponding to the size of the triangular ring accessory to perform a blank manufacturing step, adopting a flash welding step, a heat treatment step, and adopting a wet continuous magnetic powder detection method to perform surface and internal inspection steps on the whole ring, thereby obtaining the triangular ring accessory.
The blanking process is characterized in that the size of the triangular ring accessory is determined according to the requirements of users, round steel with different diameters is selected, and the required size of the bar is obtained by combining a machining mode, so that the workload and the size error caused by cogging and upsetting are avoided, the diameter of the bar is not more than 1.05 times of the diameter of a finished product to the maximum extent, and the diameter of the bar is not allowed to have negative tolerance.
The blank making process is to make a blank by adopting a bending die corresponding to the size of the triangular ring accessory, wherein the opening is positioned in the center of one straight edge after the blank is made, the maximum distance between two ends of the opening is not more than 10mm, and the dislocation of two ends is not more than 5 mm.
The flash welding process adopts a flash welding process to seal the opening, and the ratio of the sampling tensile strength of the welded junction part to the sampling tensile strength of other straight edges is not lower than 0.95.
In the heat treatment process, heat treatment is carried out by adopting a quenching and tempering mode, equipment is a box furnace, a bell-type furnace or a trolley furnace, the quenching temperature is 880-920 ℃, the heat preservation time is not less than 1 hour, and water cooling is carried out, wherein the water temperature is not more than 50 ℃; tempering temperature is 590-620 ℃, the heat preservation time is not less than 1 hour, and water cooling is carried out, wherein the water temperature is not more than 50 ℃.
The surface and internal detection process adopts a wet continuous magnetic powder detection method to carry out surface inspection on the whole ring, and cracks or other defects are not allowed to exist; and (4) carrying out ultrasonic detection on the flash welding seam by using an inclined probe, wherein the internal defect is less than or equal to 3mm flat-bottom hole equivalent.
Compared with the traditional manufacturing method, the manufacturing method has the advantages that round steel is selected as a raw material, the bending tool is used for bending, the flash welding process is adopted for forming, the steps of forging, trimming, sanding and the like are omitted, the labor intensity of workers is reduced, the raw material is greatly saved, the production efficiency is improved, the cost is saved, the metal streamline is more in line with the use condition, the comprehensive performance meets the relevant requirements of a classification society, and the manufacturing method is more suitable for mass production.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings;
a manufacturing method of a triangular ring accessory is characterized in that: the specific procedures are as follows:
blanking: the material is generally above R4 grade and mooring chain material, L is the expanded length size of the triangular ring accessory, and the tolerance of the length size is +/-1 mm; d is the diameter of the triangular ring accessory, and the diameter is increased by plus 5 mm.
A nondestructive testing procedure: detecting the triangular ring accessory material by using a flaw detector; the surface must not have any flaws of cracks.
Turning: turning the diameter of the bar stock to the diameter of the triangular ring accessory; l1 is the actual length size of the triangular ring accessory, and d1 is the actual diameter size of the triangular ring accessory;
a heating procedure: placing the triangular ring accessory into a box type reverberatory furnace, heating to 1260 +/-20 ℃, and carrying out the next working procedure when the heating time reaches the temperature; the defects of overheating and overburning surface quality are not allowed.
A bending process: the triangular ring accessory is an equilateral triangle or an isosceles triangle, and a mould corresponding to the specification is adopted for bending, so that the three positions a, b and c are ensured to be formed in R size.
And (3) flash welding: the triangular ring accessory is not provided with a groove before welding, two ends of the triangular ring accessory are installed in a butt joint mode, the two ends are contacted by a butt welding machine, metal at the contact point is melted by low-voltage strong current and resistance heat, strong splashing is generated, flashing is formed, the burning speed is 1.9-2.3 mm/S, and after the butt joint position of the two ends of the triangular ring accessory is softened, the upsetting force is rapidly applied to be 12-15 MPa to carry out axial pressurization to complete the pressure welding method; the surface roughness of the triangular ring accessory is not more than 6.3um, and crack grooves and other defects which reduce the performance of products are avoided.
A heat treatment process: carrying out heat treatment by adopting a quenching and tempering mode, wherein the equipment is a box furnace, a bell-type furnace or a trolley furnace, the quenching temperature is 880-920 ℃, the heat preservation time is not less than 1 hour, and water cooling is carried out, wherein the water temperature is not more than 50 ℃; tempering temperature is 590-620 ℃, the heat preservation time is not less than 1 hour, and water cooling is carried out, wherein the water temperature is not more than 50 ℃.
Surface and internal detection procedures: the magnetic powder inspection of the surface is carried out by adopting a continuous magnetization method and taking magnetic suspension as a medium, the inspection standard of a classification society is required to be met after a tension test, the inspection is carried out after a chain ring and an accessory tension test, the surface to be inspected must be treated by shot blasting or other equivalent methods, the roughness of the inspected surface is ensured to be generally not more than 6.3um, and the inspected surface is required to be polished smooth without steps, oxide skin and oil stains affecting the obstacles of the inspection; the internal defect is less than or equal to 3mm flat bottom hole equivalent.
Claims (6)
1. A manufacturing method of a triangular ring accessory is characterized in that: the manufacturing method at least comprises the following steps of determining the size of the triangular ring accessory, adopting a blanking step, adopting a bending die corresponding to the size of the triangular ring accessory to perform a blank manufacturing step, adopting a flash welding step, a heat treatment step, and adopting a wet continuous magnetic powder detection method to perform surface and internal inspection steps on the whole ring, thereby obtaining the triangular ring accessory.
2. The method of manufacturing a triangular ring attachment according to claim 1, characterized in that: the blanking process is to determine the size of the triangular ring accessory according to the user requirement, select round steel with different diameters and obtain the required bar size by combining a machining mode, so that the workload and the size error caused by cogging and upsetting are avoided, the maximum diameter of the bar is not more than 1.05 times of the diameter of a finished product, and the diameter of the bar is not allowed to have negative tolerance.
3. The method of manufacturing a triangular ring attachment according to claim 1, wherein: the blank making process is to adopt a bending die corresponding to the size of the triangular ring accessory to make a blank, the opening is positioned in the center of one straight edge after the blank is made, the maximum distance between two ends of the opening is not more than 10mm, and the dislocation between two ends is not more than 5 mm.
4. The method of manufacturing a triangular ring attachment according to claim 1, wherein: the flash welding process adopts a flash welding process to seal the opening, and the ratio of the sampling tensile strength of the welded junction part to the sampling tensile strength of other straight edges is not lower than 0.95; the triangular ring accessory is not provided with a groove before welding, two ends of the triangular ring accessory are installed in a butt joint mode, the two ends are contacted by a butt welding machine, metal at the contact point is melted by low-voltage strong current and resistance heat, strong splashing is generated, flashing is formed, the burning speed is 1.9-2.3 mm/S, and after the butt joint position of the two ends of the triangular ring accessory is softened, the upsetting force is rapidly applied to be 12-15 MPa to carry out axial pressurization to complete the pressure welding method; the surface roughness of the triangular ring accessory is not more than 6.3um, and crack grooves and other defects which reduce the performance of products are avoided.
5. The method of manufacturing a triangular ring attachment according to claim 1, wherein: in the heat treatment process, heat treatment is carried out by adopting a quenching and tempering mode, equipment is a box furnace, a bell-type furnace or a trolley furnace, the quenching temperature is 880-920 ℃, the heat preservation time is not less than 1 hour, and water cooling is carried out, wherein the water temperature is not more than 50 ℃; tempering temperature is 590-620 ℃, the heat preservation time is not less than 1 hour, and water cooling is carried out, wherein the water temperature is not more than 50 ℃.
6. The method of manufacturing a triangular ring attachment according to any one of claims 1 to 5, wherein: the surface and internal detection process is to carry out surface inspection on the whole ring by adopting a continuous magnetization method and a surface magnetic powder inspection detection method by taking magnetic suspension as a medium, and cracks or other defects are not allowed to exist; and (4) carrying out ultrasonic detection on the flash welding seam by adopting an inclined probe, wherein the internal defect is less than or equal to 3mm flat-bottom hole equivalent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211058675.2A CN115122057A (en) | 2022-08-31 | 2022-08-31 | Manufacturing method of triangular ring accessory |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211058675.2A CN115122057A (en) | 2022-08-31 | 2022-08-31 | Manufacturing method of triangular ring accessory |
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| CN115122057A true CN115122057A (en) | 2022-09-30 |
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| CN202211058675.2A Pending CN115122057A (en) | 2022-08-31 | 2022-08-31 | Manufacturing method of triangular ring accessory |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090020007A1 (en) * | 2007-07-20 | 2009-01-22 | Fenghua Lin | Single-piece forged-steel piston with inner oil cooling chamber and a method for manufacturing thereof |
| CN101905409A (en) * | 2010-08-13 | 2010-12-08 | 方盛车桥（柳州）有限公司 | Manufacturing technique for vehicle slugged axle case stiffening ring |
| CN102896478A (en) * | 2012-10-10 | 2013-01-30 | 广州大华仁盛铝合金管业有限公司 | Method for producing high-frequency welded pipe of aluminum alloy radiator |
| CN104625607A (en) * | 2014-12-09 | 2015-05-20 | 抚顺特殊钢股份有限公司 | Manufacturing method of INCO718 profiles for flashing welding ring |
| CN105458623A (en) * | 2015-12-04 | 2016-04-06 | 顾伟 | Welding production technology for R4-level anchor chain |
-
2022
- 2022-08-31 CN CN202211058675.2A patent/CN115122057A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090020007A1 (en) * | 2007-07-20 | 2009-01-22 | Fenghua Lin | Single-piece forged-steel piston with inner oil cooling chamber and a method for manufacturing thereof |
| CN101905409A (en) * | 2010-08-13 | 2010-12-08 | 方盛车桥（柳州）有限公司 | Manufacturing technique for vehicle slugged axle case stiffening ring |
| CN102896478A (en) * | 2012-10-10 | 2013-01-30 | 广州大华仁盛铝合金管业有限公司 | Method for producing high-frequency welded pipe of aluminum alloy radiator |
| CN104625607A (en) * | 2014-12-09 | 2015-05-20 | 抚顺特殊钢股份有限公司 | Manufacturing method of INCO718 profiles for flashing welding ring |
| CN105458623A (en) * | 2015-12-04 | 2016-04-06 | 顾伟 | Welding production technology for R4-level anchor chain |
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Application publication date: 20220930 |