CN112648276A - T-shaped bolt and manufacturing method thereof - Google Patents
T-shaped bolt and manufacturing method thereof Download PDFInfo
- Publication number
- CN112648276A CN112648276A CN202011220650.9A CN202011220650A CN112648276A CN 112648276 A CN112648276 A CN 112648276A CN 202011220650 A CN202011220650 A CN 202011220650A CN 112648276 A CN112648276 A CN 112648276A
- Authority
- CN
- China
- Prior art keywords
- bolt
- nut
- screw
- polished rod
- raw material
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 3
- 238000000641 cold extrusion Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000002161 passivation Methods 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
- B21K1/46—Making machine elements bolts, studs, or the like with heads
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The T-shaped bolt comprises a nut and a screw, wherein an external thread is arranged on the screw, the nut is rectangular, a polished rod part is arranged between the nut and the screw, the diameter of the polished rod part is 8.04mm, the diameter of the screw is 7.13mm, the nut, the polished rod part and the screw are integrally formed, and the T-shaped bolt is made of 410 stainless steel.
Description
Technical Field
The invention relates to the technical field of bolt manufacturing processes, in particular to a T-shaped bolt and a manufacturing method thereof.
Background
With the rapid development of economy in China, the fastener is widely applied to advanced fields such as electronic products, machinery, computers, mobile phones and automobiles. The bolt is a commonly used connecting piece, and the normal work of equipment is influenced because the vibrations of mechanical equipment cause the screw to drop, seriously influences the security and the stability of equipment.
With the national six-state emission requirements. The exhaust emissions of all light trucks and heavy trucks are in accordance with the national six standards. In the national six standards, the exhaust gas collection device is required for the specified exhaust emission. I know this time T type bolt is used on the sealed hoop spare of tail gas collection device.
Disclosure of Invention
Based on the technical defects, the invention provides the T-shaped bolt and the manufacturing method, and the technical defects in the technical problems are solved.
The T-shaped bolt comprises a nut and a screw, wherein an external thread is formed on the screw, the nut is rectangular, a polished rod part is arranged between the nut and the screw, the diameter of the polished rod part is 8.04mm, the diameter of the screw is 7.13mm, the nut, the polished rod part and the screw are integrally formed, and the T-shaped bolt is made of 410 stainless steel.
Further, the length of the screw is 89mm, the length from the polished rod part to the top end of the nut is 20mm, the height of the nut is the same as the length of the polished rod part, the width of the nut is 35.8mm, and the whole bolt is coated with a corrosion-resistant layer.
The manufacturing method comprises the following steps:
step one, cold heading forming: pickling and derusting the bolt steel raw material, annealing at 750-780 ℃ for 6-8 hours, cooling the raw material in a furnace to 450-550 ℃, taking the raw material out of the furnace for air cooling, cutting the raw material to the length required by the bolt, putting the cut raw material into a mold cavity at normal temperature, and respectively performing cold extrusion to form a nut, a polished rod part and a screw rod required by the bolt;
step two, screw thread rolling: processing external threads on the surface of the screw by using a thread rolling machine;
step three, cleaning and processing: cleaning the whole bolt by using cleaning equipment;
step four, heat treatment: quenching the crude bolt product by quenching oil at the temperature of 900-;
step five, passivation treatment: and passivating the bolt after the heat treatment by using a passivating agent.
The T-shaped bolt manufactured by the method has good corrosion resistance, the bolt can be screwed or loosened by hand through the design of the polished rod part, the T-shaped bolt is convenient to use, and the polished rod part is used for separating the nut and the screw rod, so that the nut is adhered to other objects due to corrosion, and the service life is prolonged.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Wherein: 1. a nut; 2. a light bar section; 3. a screw.
Detailed Description
The invention will be further explained with reference to the drawings.
According to the T-shaped bolt and the manufacturing method thereof shown in the figure 1, the T-shaped bolt comprises a nut 1 and a screw rod 3, external threads are formed on the screw rod 3, the nut 1 is rectangular, a polished rod part 2 is further arranged between the nut 1 and the screw rod 3, the diameter of the polished rod part 2 is 8.04mm, the diameter of the screw rod 3 is 7.13mm, the nut 1, the polished rod part 2 and the screw rod 3 are integrally formed, and the T-shaped bolt is made of 410 stainless steel.
Further, the length of the screw rod 3 is 89mm, the length from the polished rod part 2 to the top end of the nut 1 is 20mm, the height of the nut 1 is the same as the length of the polished rod part 2, the width of the nut 1 is 35.8mm, and the whole bolt is coated with a corrosion-resistant layer.
The manufacturing method comprises the following steps:
step one, cold heading forming: pickling and derusting the bolt steel raw material, annealing at 750-780 ℃ for 6-8 hours, cooling the raw material in a furnace to 450-550 ℃, taking the raw material out of the furnace for air cooling, cutting the raw material to the length required by the bolt, putting the cut raw material into a mold cavity at normal temperature, and respectively performing cold extrusion to form a nut 1, a polished rod part 2 and a screw 3 required by the bolt;
step two, thread rolling by the screw rod 3: processing external threads on the surface of the screw rod 3 by using a thread rolling machine;
step three, cleaning and processing: cleaning the whole bolt by using cleaning equipment;
step four, heat treatment: quenching the crude bolt product by quenching oil at the temperature of 900-;
step five, passivation treatment: and passivating the bolt after the heat treatment by using a passivating agent.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention relates, several simple deductions or substitutions may be made without departing from the spirit of the invention, and all shall be considered as belonging to the scope of the invention.
Claims (3)
1. A T-bolt which is characterized in that: t type bolt includes nut and screw rod, it has the external screw thread to open on the screw rod, the nut is the rectangle, still be equipped with polished rod portion between nut and the screw rod, polished rod portion diameter is 8.04mm, the screw rod diameter is 7.13mm, nut, polished rod portion, screw rod integrated into one piece, T type bolt adopts 410 stainless steel to make.
2. A T-bolt as defined in claim 1 wherein: the length of the screw is 89mm, the length from the polished rod part to the top end of the nut is 20mm, the height of the nut is the same as the length of the polished rod part, the width of the nut is 35.8mm, and the whole bolt is coated with the corrosion-resistant layer.
3. A T-bolt as defined in any one of claims 1-2 further including a method of manufacture characterized by: the method comprises the following steps:
step one, cold heading forming: pickling and derusting the bolt steel raw material, annealing at 750-780 ℃ for 6-8 hours, cooling the raw material in a furnace to 450-550 ℃, taking the raw material out of the furnace for air cooling, cutting the raw material to the length required by the bolt, putting the cut raw material into a mold cavity at normal temperature, and respectively performing cold extrusion to form a nut, a polished rod part and a screw rod required by the bolt;
step two, screw thread rolling: processing external threads on the surface of the screw by using a thread rolling machine;
step three, cleaning and processing: cleaning the whole bolt by using cleaning equipment;
step four, heat treatment: quenching the crude bolt product by quenching oil at the temperature of 900-;
step five, passivation treatment: and passivating the bolt after the heat treatment by using a passivating agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011220650.9A CN112648276A (en) | 2020-11-05 | 2020-11-05 | T-shaped bolt and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011220650.9A CN112648276A (en) | 2020-11-05 | 2020-11-05 | T-shaped bolt and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112648276A true CN112648276A (en) | 2021-04-13 |
Family
ID=75346832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011220650.9A Pending CN112648276A (en) | 2020-11-05 | 2020-11-05 | T-shaped bolt and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112648276A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133477A (en) * | 2011-11-28 | 2013-06-05 | 苏州工业园区协诚精密五金有限公司 | Bolt component preparation technology |
| CN203796708U (en) * | 2013-11-28 | 2014-08-27 | 内蒙古欧意德发动机有限公司 | Bolt and bolt connection component |
| CN205578449U (en) * | 2016-03-21 | 2016-09-14 | 上海金马高强紧固件有限公司 | Column foot flange face bolt |
| CN106884841A (en) * | 2017-04-07 | 2017-06-23 | 江苏固德建筑机械有限公司 | A kind of round end washer cross Self Drilling Screws and its processing technology |
| CN107747583A (en) * | 2017-09-30 | 2018-03-02 | 南京惠德机械有限公司 | A kind of production technology of corrosion resistant automobile using bolt |
| WO2018039947A1 (en) * | 2016-08-31 | 2018-03-08 | 杨东佐 | Fastening connection assembly, fastening connection structure and rail structure |
| CN109622869A (en) * | 2018-12-29 | 2019-04-16 | 宾科汽车紧固件（昆山）有限公司 | A kind of assembling bolt and preparation method thereof and device |
-
2020
- 2020-11-05 CN CN202011220650.9A patent/CN112648276A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133477A (en) * | 2011-11-28 | 2013-06-05 | 苏州工业园区协诚精密五金有限公司 | Bolt component preparation technology |
| CN203796708U (en) * | 2013-11-28 | 2014-08-27 | 内蒙古欧意德发动机有限公司 | Bolt and bolt connection component |
| CN205578449U (en) * | 2016-03-21 | 2016-09-14 | 上海金马高强紧固件有限公司 | Column foot flange face bolt |
| WO2018039947A1 (en) * | 2016-08-31 | 2018-03-08 | 杨东佐 | Fastening connection assembly, fastening connection structure and rail structure |
| CN106884841A (en) * | 2017-04-07 | 2017-06-23 | 江苏固德建筑机械有限公司 | A kind of round end washer cross Self Drilling Screws and its processing technology |
| CN107747583A (en) * | 2017-09-30 | 2018-03-02 | 南京惠德机械有限公司 | A kind of production technology of corrosion resistant automobile using bolt |
| CN109622869A (en) * | 2018-12-29 | 2019-04-16 | 宾科汽车紧固件（昆山）有限公司 | A kind of assembling bolt and preparation method thereof and device |
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| 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: 20210413 |