CN113751967A - Forming method of welded nut - Google Patents
Forming method of welded nut Download PDFInfo
- Publication number
- CN113751967A CN113751967A CN202111020800.6A CN202111020800A CN113751967A CN 113751967 A CN113751967 A CN 113751967A CN 202111020800 A CN202111020800 A CN 202111020800A CN 113751967 A CN113751967 A CN 113751967A
- Authority
- CN
- China
- Prior art keywords
- blank
- nut
- forming
- annealing
- cold header
- 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
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000000137 annealing Methods 0.000 claims abstract description 21
- 238000003466 welding Methods 0.000 claims abstract description 18
- 238000003754 machining Methods 0.000 claims abstract description 14
- 238000005498 polishing Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 6
- 150000002739 metals Chemical class 0.000 claims 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a forming method of a welded nut, which comprises the steps of annealing a nut blank, heating the blank at 800-1000 ℃, and naturally cooling for 1 h; the blank is sent into a cold header for rough machining, the blank is cut into two parts before entering the cold header, then the two parts enter a main die in the cold header for plastic machining, a nut forming blank is obtained after cold heading forming, the nut forming blank is cut into two separate pieces, metal is melted at high temperature and then mixed together, and then the two separate pieces are cooled to normal temperature; and polishing the surface of the formed blank separating piece obtained in the step by using polishing equipment to ensure that the surface has no burrs, then putting the formed blank separating piece into a preheating furnace for processing and annealing again. According to the invention, the alloy material is added in the existing nut manufacturing process, so that the overall structural strength of the nut can be enhanced, and meanwhile, the manufactured welded nut has small welding line, compact overall structure and higher quality requirement.
Description
Technical Field
The invention relates to the technical field of nuts, in particular to a forming method of a welded nut.
Background
The nut is a nut, and is screwed together with a bolt or a screw rod to play a role in fastening, all production and manufacturing machines must use an element, most of the existing various machine manufactures, high buildings, television towers and the like use common bolt and nuts as connecting fasteners, and one part of the common bolt and nut is connected, while the welding nut is a special nut which is used for welding the nut on a welding parent body through an electrode, is a nut which is directly welded on a workpiece and has the same effect as the nut additionally provided with a locking design, but the structural strength of the existing produced welding nut is lower, the manufactured welding nut has larger welding seams, and the quality problem exists in later use.
Disclosure of Invention
The present invention is directed to a method for forming a weld nut, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a method for forming a weld nut comprises the following production steps:
A. material shearing: annealing the nut blank, heating the blank at 800-1000 ℃, and naturally cooling for 1 h;
B. the blank is sent into a cold header for rough machining, the blank is cut into two parts before entering the cold header, then the two parts enter a main die in the cold header for plastic machining, a nut forming blank is obtained after cold heading forming, the nut forming blank is cut into two separate pieces, metal is melted at high temperature and then mixed together, and then the two separate pieces are cooled to normal temperature;
C. polishing the surface of the formed blank separating piece obtained in the step by using polishing equipment to ensure that the surface has no burrs, then putting the formed blank separating piece into a preheating furnace for processing and annealing again;
D. and standing for a period of time after the annealing in the steps, quenching, cooling to normal temperature, cleaning dust and oil stains on the surfaces of the separating pieces, welding and molding the two separating pieces in a pressurizing mode, and obtaining a finished product of the welded nut.
Preferably, the alloy material is added when the metal is melted and mixed at a high temperature, and the internal force is a molecular force, and the strength is generally higher than that of the matrix.
Preferably, the temperature in the preheating furnace is controlled between 500 ℃ and 800 ℃.
Preferably, the surface of the welded workpiece is free of dust and oil stains before the separated part is welded, and the welding parameters of the welded nut are 0.5mm-0.8 mm.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the alloy material is added in the existing nut manufacturing process, so that the overall structural strength of the nut can be enhanced, meanwhile, the manufactured welded nut has small welding line, compact overall structure and higher quality requirement, and the structural strength of the workpiece can be improved on the original basis through twice annealing treatment, so that the overall welding quality of the nut is enhanced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to achieve the purpose, the invention provides the following technical scheme: a method for forming a weld nut comprises the following production steps:
A. material shearing: annealing the nut blank, heating the blank at 800-1000 ℃, and naturally cooling for 1 h;
B. the blank is sent into a cold header for rough machining, the blank is cut into two parts before entering the cold header, then the two parts enter a main die in the cold header for plastic machining, a nut forming blank is obtained after cold heading forming, the nut forming blank is cut into two separate pieces, metal is melted at high temperature and then mixed together, and then the two separate pieces are cooled to normal temperature;
C. polishing the surface of the formed blank separating piece obtained in the step by using polishing equipment to ensure that the surface has no burrs, then putting the formed blank separating piece into a preheating furnace for processing and annealing again;
D. and standing for a period of time after the annealing in the steps, quenching, cooling to normal temperature, cleaning dust and oil stains on the surfaces of the separating pieces, welding and molding the two separating pieces in a pressurizing mode, and obtaining a finished product of the welded nut.
The first embodiment is as follows:
a method for forming a weld nut comprises the following production steps:
A. material shearing: annealing the nut blank, heating the blank at 700-900 ℃, and naturally cooling for 0.8 h;
B. the blank is sent into a cold header for rough machining, the blank is cut into two parts before entering the cold header, then the two parts enter a main die in the cold header for plastic machining, a nut forming blank is obtained after cold heading forming, the nut forming blank is cut into two separate pieces, metal is melted at high temperature and then mixed together, and then the two separate pieces are cooled to normal temperature;
C. polishing the surface of the formed blank separating piece obtained in the step by using polishing equipment to ensure that the surface has no burrs, then putting the formed blank separating piece into a preheating furnace for processing and annealing again, wherein the temperature in the preheating furnace is controlled to be 500-800 ℃;
D. and standing for a period of time after the annealing in the steps, quenching, cooling to normal temperature, cleaning dust and oil stains on the surfaces of the separating pieces, welding and molding the two separating pieces in a pressurizing mode, and obtaining a finished product of the welded nut.
Example two:
a method for forming a weld nut comprises the following production steps:
A. material shearing: annealing the nut blank, heating the blank at 600-800 ℃, and naturally cooling for 0.6 h;
B. the blank is sent into a cold header for rough machining, the blank is cut into two parts before entering the cold header, then the two parts enter a main die in the cold header for plastic machining, a nut forming blank is obtained after cold heading forming, the nut forming blank is cut into two separate pieces, metal is melted at high temperature and then mixed together, and then the two separate pieces are cooled to normal temperature;
C. polishing the surface of the formed blank separating piece obtained in the step by using polishing equipment to ensure that the surface has no burrs, then putting the formed blank separating piece into a preheating furnace for processing and annealing again, wherein the temperature in the preheating furnace is controlled to be 400-600 ℃;
D. and standing for a period of time after the annealing in the steps, quenching, cooling to normal temperature, cleaning dust and oil stains on the surfaces of the separating pieces, welding and molding the two separating pieces in a pressurizing mode, and obtaining a finished product of the welded nut.
Example three:
a method for forming a weld nut comprises the following production steps:
A. material shearing: annealing the nut blank, heating the blank at 500-700 ℃, and naturally cooling for 0.5 h;
B. the blank is sent into a cold header for rough machining, the blank is cut into two parts before entering the cold header, then the two parts enter a main die in the cold header for plastic machining, a nut forming blank is obtained after cold heading forming, the nut forming blank is cut into two separate pieces, metal is melted at high temperature and then mixed together, and then the two separate pieces are cooled to normal temperature;
C. polishing the surface of the formed blank separating piece obtained in the step by using polishing equipment to ensure that the surface has no burrs, then putting the formed blank separating piece into a preheating furnace for processing and annealing again, wherein the temperature in the preheating furnace is controlled to be 300-500 ℃;
D. and standing for a period of time after the annealing in the steps, quenching, cooling to normal temperature, cleaning dust and oil stains on the surfaces of the separating pieces, welding and molding the two separating pieces in a pressurizing mode, and obtaining a finished product of the welded nut.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A forming method of a welded nut is characterized in that: the production steps are as follows:
A. material shearing: annealing the nut blank, heating the blank at 800-1000 ℃, and naturally cooling for 1 h;
B. the blank is sent into a cold header for rough machining, the blank is cut into two parts before entering the cold header, then the two parts enter a main die in the cold header for plastic machining, a nut forming blank is obtained after cold heading forming, the nut forming blank is cut into two separate pieces, metal is melted at high temperature and then mixed together, and then the two separate pieces are cooled to normal temperature;
C. polishing the surface of the formed blank separating piece obtained in the step by using polishing equipment to ensure that the surface has no burrs, then putting the formed blank separating piece into a preheating furnace for processing and annealing again;
D. and standing for a period of time after the annealing in the steps, quenching, cooling to normal temperature, cleaning dust and oil stains on the surfaces of the separating pieces, welding and molding the two separating pieces in a pressurizing mode, and obtaining a finished product of the welded nut.
2. The method of claim 1, wherein: alloy materials can be added when the metals are melted and mixed by high temperature, the internal action of molecular force is exerted, and the strength is generally higher than that of a parent body.
3. The method of claim 1, wherein: the temperature in the preheating furnace is controlled between 500 ℃ and 800 ℃.
4. The method of claim 1, wherein: before welding the separating piece, the surface of the welded workpiece is free of dust and oil stain, and the welding parameters of the welded nut are 0.5mm-0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111020800.6A CN113751967A (en) | 2021-09-01 | 2021-09-01 | Forming method of welded nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111020800.6A CN113751967A (en) | 2021-09-01 | 2021-09-01 | Forming method of welded nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113751967A true CN113751967A (en) | 2021-12-07 |
Family
ID=78792444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111020800.6A Pending CN113751967A (en) | 2021-09-01 | 2021-09-01 | Forming method of welded nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113751967A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11335768A (en) * | 1998-05-22 | 1999-12-07 | Furukawa Electric Co Ltd:The | Aluminum alloy material for projection welding nut |
| DE102004034496A1 (en) * | 2004-07-16 | 2006-02-16 | Ejot Gmbh & Co. Kg | Friction weld nut formed as earthing contact for e.g. vehicle, has one side formed as welding side with concentric ring bead for friction welding and other side as contact side for electrical conductor and has lug and screw for sealing |
| CN101722404A (en) * | 2008-10-23 | 2010-06-09 | 有限会社新城制作所 | Manufacturing method of weld nut made of stainless steel plate and blanking punch used in its manufacturing method |
| CN103921064A (en) * | 2014-03-17 | 2014-07-16 | 宁波固远管件有限公司 | Technology for machining cold upset nuts |
| CN105002443A (en) * | 2015-06-08 | 2015-10-28 | 卢家雄 | Nut machining process |
| CN106553022A (en) * | 2015-09-30 | 2017-04-05 | 明光市久鼎五金制品有限公司 | A kind of production and processing method of nut |
| JP2019184038A (en) * | 2018-04-17 | 2019-10-24 | ボーセイキャプティブ株式会社 | Caulking nut and cold heading method of caulking nut |
| CN111940670A (en) * | 2020-07-23 | 2020-11-17 | 宾科汽车紧固件（昆山）有限公司 | Method for forming welded nut |
-
2021
- 2021-09-01 CN CN202111020800.6A patent/CN113751967A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11335768A (en) * | 1998-05-22 | 1999-12-07 | Furukawa Electric Co Ltd:The | Aluminum alloy material for projection welding nut |
| DE102004034496A1 (en) * | 2004-07-16 | 2006-02-16 | Ejot Gmbh & Co. Kg | Friction weld nut formed as earthing contact for e.g. vehicle, has one side formed as welding side with concentric ring bead for friction welding and other side as contact side for electrical conductor and has lug and screw for sealing |
| CN101722404A (en) * | 2008-10-23 | 2010-06-09 | 有限会社新城制作所 | Manufacturing method of weld nut made of stainless steel plate and blanking punch used in its manufacturing method |
| CN103921064A (en) * | 2014-03-17 | 2014-07-16 | 宁波固远管件有限公司 | Technology for machining cold upset nuts |
| CN105002443A (en) * | 2015-06-08 | 2015-10-28 | 卢家雄 | Nut machining process |
| CN106553022A (en) * | 2015-09-30 | 2017-04-05 | 明光市久鼎五金制品有限公司 | A kind of production and processing method of nut |
| JP2019184038A (en) * | 2018-04-17 | 2019-10-24 | ボーセイキャプティブ株式会社 | Caulking nut and cold heading method of caulking nut |
| CN111940670A (en) * | 2020-07-23 | 2020-11-17 | 宾科汽车紧固件（昆山）有限公司 | Method for forming welded nut |
Non-Patent Citations (1)
| Title |
|---|
| 瑞安市威孚标准件有限公司: "《百度搜索：http://www.wei-fu.com/content3_143.htm》", 21 May 2021, pages: 1 - 2 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020253550A1 (en) | Novel hollow shaft manufacturing method | |
| CN103009011B (en) | Processing method for stainless steel high-strength bolt | |
| CN106363352B (en) | A kind of manufacturing process of high-strength aluminum alloy ring forging | |
| CN109352288B (en) | Cold extrusion pressing forming process for automobile universal joint fork integral piece | |
| JP2000317738A (en) | Manufacture of stainless steel bolt | |
| CN109465607A (en) | A kind of processing technology of high-strength bolt | |
| CN104400344A (en) | Bolt manufacturing technology | |
| CN102500732A (en) | Multi-station cold heading forming technology of automobile door limiter | |
| CN112719203A (en) | Processing technology of high-strength bolt for automobile engine | |
| CN112718910A (en) | Manufacturing method of large-caliber TC4 titanium alloy thick-wall pipe | |
| CN105834346A (en) | Forging method for efficiently healing steel ingot internal hole type defects by using small pressure | |
| CN113751967A (en) | Forming method of welded nut | |
| CN104625627A (en) | Manufacturing method of titanium alloy electrode bar for plasma rotation electrode | |
| CN112427476A (en) | Gear warm extrusion processing technology and extrusion die thereof | |
| CN107414012A (en) | A kind of cold-heading molding technique of big hexagon head bolt | |
| CN112496670A (en) | Non-welding repair process for casting cracks | |
| CN107186444A (en) | A kind of hubbed flange processing technology | |
| CN111922266A (en) | Hot forging bolt processing method | |
| CN101491828B (en) | Copper steel fusion-casting welding technique | |
| CN105880925A (en) | Outer hexagonal bolt machining process | |
| CN111571143B (en) | Self-plugging rivet manufacturing process | |
| CN107363481A (en) | A kind of cold-heading molding technique of rack bolt | |
| CN106334906A (en) | Automobile part surface processing method | |
| CN107876574A (en) | A kind of manufacture method of shaped strip copper | |
| CN106862879A (en) | A kind of cold-forging forming technique of the hollow output shaft with flange |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211207 |