CN113275842A - Production process of high-strength rivet nut - Google Patents
Production process of high-strength rivet nut Download PDFInfo
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- CN113275842A CN113275842A CN202110585128.9A CN202110585128A CN113275842A CN 113275842 A CN113275842 A CN 113275842A CN 202110585128 A CN202110585128 A CN 202110585128A CN 113275842 A CN113275842 A CN 113275842A
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- rivet nut
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000010791 quenching Methods 0.000 claims abstract description 29
- 230000000171 quenching effect Effects 0.000 claims abstract description 29
- 238000005496 tempering Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000010079 rubber tapping Methods 0.000 claims abstract description 17
- 238000007689 inspection Methods 0.000 claims abstract description 11
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 238000004381 surface treatment Methods 0.000 claims abstract description 6
- 238000005491 wire drawing Methods 0.000 claims abstract description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 21
- 238000004321 preservation Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 150000002736 metal compounds Chemical class 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 2
- 238000005261 decarburization Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
本发明公开了一种高强度拉铆螺母的生产工艺，包括如下步骤：a、选材；b、拉丝；c、冷镦；d、攻牙；e、淬火：在加热炉内对成型的拉铆螺母进行淬火，控制淬火温度为850～910℃，升温时间4～8小时，保温时间0.5～1.5小时，然后在淬冷介质中迅速冷却，淬冷介质的温度为50～70℃；f、回火：对淬火后的拉铆螺母进行回火，控制回火温度450～510℃，升温时间2～4小时，保温时间3～6小时；g、表面处理；h、光学全检。本发明通过先对拉铆螺母进行攻丝，再进行热处理，这样制备出来的拉铆螺母具备更高的强度，满足人们对拉铆螺母高强度的要求。
The invention discloses a production process of a high-strength rivet nut, which comprises the following steps: a, material selection; b, wire drawing; c, cold heading; d, tapping; The nut is quenched, and the quenching temperature is controlled to be 850-910 ℃, the heating time is 4-8 hours, the holding time is 0.5-1.5 hours, and then rapidly cooled in the quenching medium, and the temperature of the quenching medium is 50-70 ℃; f. Fire: Temper the rivet nut after quenching, control the tempering temperature to 450-510 ℃, the heating time is 2-4 hours, and the holding time is 3-6 hours; g, surface treatment; h, full optical inspection. In the invention, the rivet nut is firstly tapped and then heat treated, so that the rivet nut prepared in this way has higher strength and meets people's requirements for high strength of the rivet nut.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of fasteners, in particular to the technical field of a high-strength rivet nut process.
[ background of the invention ]
If the nut of a certain product needs to be installed outside, and the space inside is narrow, when the pressure head of the squeeze riveter can not enter the method for squeeze riveting and bud drawing and the like, which can not meet the strength requirement, at this time, the squeeze riveting and the expansion riveting are not feasible, and the pull riveting is needed. The rivet nut is widely used for assembling electromechanical and light industrial products such as automobiles, aviation, instruments, furniture, decoration and the like. The novel riveting tool is developed for overcoming the defects that a welding nut of a metal sheet and a thin pipe is easy to melt, an internal thread is easy to slip, and the like, does not need to tap the internal thread, does not need to weld the nut, is firm in riveting, and is high in efficiency and convenient to use. The existing technology for manufacturing the blind rivet nut generally carries out annealing firstly and tapping, so that the manufactured blind rivet nut has the defect of insufficient strength.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides a production process of a high-strength blind rivet nut, which can be used for manufacturing the high-strength blind rivet nut.
In order to achieve the purpose, the invention provides a production process of a high-strength rivet nut, which comprises the following steps:
a. selecting materials: selecting a blank material with proper cost and performance;
b. drawing: drawing the blank material by a wire drawing machine to be reformed into a section meeting the size requirement;
c. cold heading: placing the section bar into a cold heading machine for cold heading to obtain a rivet nut;
d. tapping: putting the rivet nut into a tapping machine for tapping;
e. quenching: quenching the formed rivet nut in a heating furnace, controlling the quenching temperature to be 850-910 ℃, the temperature rise time to be 4-8 hours, the heat preservation time to be 0.5-1.5 hours, and then rapidly cooling in a quenching medium, wherein the temperature of the quenching medium is 50-70 ℃;
f. tempering: tempering the quenched rivet nut, controlling the tempering temperature to be 450-510 ℃, the temperature rise time to be 2-4 hours, and the heat preservation time to be 3-6 hours;
g. surface treatment: in the water solution containing the precipitated metal compound of the heat-treated rivet nut, attaching metal substances separated out from the water solution to the surface of the rivet nut after electrification and forming an anti-rust layer;
h. optical full inspection: and screening the finished products of the rivet nuts through an optical full inspection machine.
Preferably, the blank material in the step a is 20 MnTiB.
Preferably, in the step e, the quenching temperature is controlled to be 880 ℃, the temperature rise time is 6 hours, and the heat preservation time is 1 hour.
Preferably, in the step f, the tempering temperature is controlled to be 480 ℃, the temperature rise time is controlled to be 3 hours, and the heat preservation time is controlled to be 5 hours.
Preferably, the quenching medium in step e is oil, and the temperature of the quenching medium is 60 ℃.
Preferably, in the step e, the heating furnace is an atmosphere protection furnace, a protective atmosphere is added into the atmosphere protection furnace, and the protective atmosphere is methanol.
The invention has the beneficial effects that: according to the invention, the rivet nut is tapped firstly and then is subjected to heat treatment, so that the prepared rivet nut has higher strength and meets the requirement of people on the high strength of the rivet nut; controlling the rivet nut to be quenched at 880 ℃, and then tempering at 480 ℃, so that the strength of the rivet nut is effectively improved; the heating process of the rivet nut is carried out under the protection of the atmosphere of methanol, so as to prevent the decarburization phenomenon.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
Fig. 1 is a process flow diagram of a production process of a high-strength blind rivet nut of the invention.
[ detailed description ] embodiments
The first embodiment is as follows:
referring to fig. 1, the production process of the high-strength rivet nut of the invention comprises the following steps:
a. selecting materials: selecting 20MnTiB as a blank material;
b. drawing: drawing the blank material by a wire drawing machine to be reformed into a section meeting the size requirement;
c. cold heading: placing the section bar into a cold heading machine for cold heading to obtain a rivet nut;
d. tapping: putting the rivet nut into a tapping machine for tapping;
e. quenching: quenching the formed rivet nut in a heating furnace, controlling the quenching temperature to be 880 ℃, the temperature rise time to be 6 hours, and the heat preservation time to be 1 hour, and then rapidly cooling in oil at 60 ℃;
f. tempering: tempering the quenched rivet nut, controlling the tempering temperature to be 480 ℃, and keeping the temperature for 3 hours and 5 hours;
g. surface treatment: in the water solution containing the precipitated metal compound of the heat-treated rivet nut, attaching metal substances separated out from the water solution to the surface of the rivet nut after electrification and forming an anti-rust layer;
h. optical full inspection: screening the finished products of the rivet nuts through an optical full inspection machine,
and e, the heating furnace in the step e is an atmosphere protection furnace, a protective atmosphere is added into the atmosphere protection furnace, and the protective atmosphere is methanol.
Example two:
referring to fig. 1, the production process of the high-strength rivet nut of the invention comprises the following steps:
a. selecting materials: selecting 20MnTiB as a blank material;
b. drawing: drawing the blank material by a wire drawing machine to be reformed into a section meeting the size requirement;
c. cold heading: placing the section bar into a cold heading machine for cold heading to obtain a rivet nut;
d. tapping: putting the rivet nut into a tapping machine for tapping;
e. quenching: quenching the formed rivet nut in a heating furnace, controlling the quenching temperature to be 850 ℃, heating for 4 hours, keeping the temperature for 0.5 hour, and then rapidly cooling in oil at 50 ℃;
f. tempering: tempering the quenched rivet nut, controlling the tempering temperature to be 450 ℃, and keeping the temperature for 2 hours and the heat preservation time for 3 hours;
g. surface treatment: in the water solution containing the precipitated metal compound of the heat-treated rivet nut, attaching metal substances separated out from the water solution to the surface of the rivet nut after electrification and forming an anti-rust layer;
h. optical full inspection: screening the finished products of the rivet nuts through an optical full inspection machine,
and e, the heating furnace in the step e is an atmosphere protection furnace, a protective atmosphere is added into the atmosphere protection furnace, and the protective atmosphere is methanol.
Example three:
referring to fig. 1, the production process of the high-strength rivet nut of the invention comprises the following steps:
a. selecting materials: selecting 20MnTiB as a blank material;
b. drawing: drawing the blank material by a wire drawing machine to be reformed into a section meeting the size requirement;
c. cold heading: placing the section bar into a cold heading machine for cold heading to obtain a rivet nut;
d. tapping: putting the rivet nut into a tapping machine for tapping;
e. quenching: quenching the formed rivet nut in a heating furnace, controlling the quenching temperature to be 910 ℃, the temperature rise time to be 8 hours, and the heat preservation time to be 1.5 hours, and then rapidly cooling in oil at 70 ℃;
f. tempering: tempering the quenched rivet nuts, controlling the tempering temperature to be 510 ℃, and keeping the temperature for 4 hours and the heat preservation time for 6 hours;
g. surface treatment: in the water solution containing the precipitated metal compound of the heat-treated rivet nut, attaching metal substances separated out from the water solution to the surface of the rivet nut after electrification and forming an anti-rust layer;
h. optical full inspection: screening the finished products of the rivet nuts through an optical full inspection machine,
and e, the heating furnace in the step e is an atmosphere protection furnace, a protective atmosphere is added into the atmosphere protection furnace, and the protective atmosphere is methanol.
According to the invention, the rivet nut is tapped firstly and then is subjected to heat treatment, so that the prepared rivet nut has higher strength and meets the requirement of people on the high strength of the rivet nut; controlling the rivet nut to be quenched at 880 ℃, and then tempering at 480 ℃, so that the strength of the rivet nut is effectively improved; the heating process of the rivet nut is carried out under the protection of the atmosphere of methanol, so as to prevent the decarburization phenomenon.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (6)
1. The production process of the high-strength rivet nut is characterized by comprising the following steps of: the method comprises the following steps:
a. selecting materials: selecting a blank material with proper cost and performance;
b. drawing: drawing the blank material by a wire drawing machine to be reformed into a section meeting the size requirement;
c. cold heading: placing the section bar into a cold heading machine for cold heading to obtain a rivet nut;
d. tapping: putting the rivet nut into a tapping machine for tapping;
e. quenching: quenching the formed rivet nut in a heating furnace, controlling the quenching temperature to be 850-910 ℃, the temperature rise time to be 4-8 hours, the heat preservation time to be 0.5-1.5 hours, and then rapidly cooling in a quenching medium, wherein the temperature of the quenching medium is 50-70 ℃;
f. tempering: tempering the quenched rivet nut, controlling the tempering temperature to be 450-510 ℃, the temperature rise time to be 2-4 hours, and the heat preservation time to be 3-6 hours;
g. surface treatment: in the water solution containing the precipitated metal compound of the heat-treated rivet nut, attaching metal substances separated out from the water solution to the surface of the rivet nut after electrification and forming an anti-rust layer;
h. optical full inspection: and screening the finished products of the rivet nuts through an optical full inspection machine.
2. The production process of the high-strength blind rivet nut as claimed in claim 1, wherein: the blank material in the step a is 20 MnTiB.
3. The process for producing a high-strength blind rivet nut according to claim 1 or 2, characterized in that: and in the step e, the quenching temperature is controlled to be 880 ℃, the temperature rise time is 6 hours, and the heat preservation time is 1 hour.
4. A process for producing a high-strength blind rivet nut as claimed in claim 1, 2 or 3, wherein: in the step f, the tempering temperature is controlled to be 480 ℃, the temperature rise time is 3 hours, and the heat preservation time is 5 hours.
5. The production process of the high-strength blind rivet nut as claimed in claim 1, wherein: in the step e, the quenching medium is oil, and the temperature of the quenching medium is 60 ℃.
6. The production process of the high-strength blind rivet nut as claimed in claim 1, wherein: and e, the heating furnace in the step e is an atmosphere protection furnace, a protective atmosphere is added into the atmosphere protection furnace, and the protective atmosphere is methanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585128.9A CN113275842A (en) | 2021-05-27 | 2021-05-27 | Production process of high-strength rivet nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585128.9A CN113275842A (en) | 2021-05-27 | 2021-05-27 | Production process of high-strength rivet nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113275842A true CN113275842A (en) | 2021-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110585128.9A Pending CN113275842A (en) | 2021-05-27 | 2021-05-27 | Production process of high-strength rivet nut |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857783A (en) * | 2021-09-28 | 2021-12-31 | 东莞市泓瑞五金科技有限公司 | Production process of press-riveting nut |
| CN113926962A (en) * | 2021-10-13 | 2022-01-14 | 宿迁弘益工贸有限公司 | Production method of high-strength cement nail |
| CN117737365A (en) * | 2023-12-18 | 2024-03-22 | 湖北博士隆科技股份有限公司 | Production process of high-load-retention blind rivet nut |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110003647A1 (en) * | 2009-07-02 | 2011-01-06 | Fastener Advance Products | Pierce nut manufacturing method and apparatus |
| CN104227358A (en) * | 2014-09-16 | 2014-12-24 | 浙江新东方汽车零部件有限公司 | Production technology for nut special for commercial vehicle |
| CN109894813A (en) * | 2019-02-20 | 2019-06-18 | 海盐兆丰紧固件有限公司 | A kind of manufacturing process of nut |
| CN110439904A (en) * | 2019-07-19 | 2019-11-12 | 苏州中新精密工业有限公司 | A kind of nut and its production technology |
| CN110900118A (en) * | 2019-10-28 | 2020-03-24 | 瑞安市振安车辆配件有限公司 | Nut machining process |
| CN110961871A (en) * | 2019-12-23 | 2020-04-07 | 温州市瑞泰紧固件有限公司 | Nut machining process |
-
2021
- 2021-05-27 CN CN202110585128.9A patent/CN113275842A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110003647A1 (en) * | 2009-07-02 | 2011-01-06 | Fastener Advance Products | Pierce nut manufacturing method and apparatus |
| CN104227358A (en) * | 2014-09-16 | 2014-12-24 | 浙江新东方汽车零部件有限公司 | Production technology for nut special for commercial vehicle |
| CN109894813A (en) * | 2019-02-20 | 2019-06-18 | 海盐兆丰紧固件有限公司 | A kind of manufacturing process of nut |
| CN110439904A (en) * | 2019-07-19 | 2019-11-12 | 苏州中新精密工业有限公司 | A kind of nut and its production technology |
| CN110900118A (en) * | 2019-10-28 | 2020-03-24 | 瑞安市振安车辆配件有限公司 | Nut machining process |
| CN110961871A (en) * | 2019-12-23 | 2020-04-07 | 温州市瑞泰紧固件有限公司 | Nut machining process |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857783A (en) * | 2021-09-28 | 2021-12-31 | 东莞市泓瑞五金科技有限公司 | Production process of press-riveting nut |
| CN113857783B (en) * | 2021-09-28 | 2023-07-21 | 东莞市泓瑞五金科技有限公司 | Production process of press-riveting nut |
| CN113926962A (en) * | 2021-10-13 | 2022-01-14 | 宿迁弘益工贸有限公司 | Production method of high-strength cement nail |
| CN117737365A (en) * | 2023-12-18 | 2024-03-22 | 湖北博士隆科技股份有限公司 | Production process of high-load-retention blind rivet nut |
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Application publication date: 20210820 |