CN103398067B - A kind of screw bolt manufacture process - Google Patents
A kind of screw bolt manufacture process Download PDFInfo
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- CN103398067B CN103398067B CN201310316597.6A CN201310316597A CN103398067B CN 103398067 B CN103398067 B CN 103398067B CN 201310316597 A CN201310316597 A CN 201310316597A CN 103398067 B CN103398067 B CN 103398067B
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- bolt
- heat treatment
- carburizing heat
- shank
- screw
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Abstract
The invention discloses a kind of screw bolt manufacture process, adopt boron steel wire rod, it mainly comprises the following steps: (1) makes bolt head; (2) make bolt shank, the cylinder guide section that this bolt shank comprises thread section and extended by thread section end, the tail end of bolt shank has cut a breach; (3) carburizing heat treatment; (4) sandblasting; (5) electroplate.The invention has the beneficial effects as follows: 1, bolt shank can screw in the component without prefabricated interior threaded hole smoothly, and cuts the internal thread consistent with bolt shank, continue to screw in two components are tightened together.2, ensure to shoot along bolt axial direction level, avoid tilt bolt to shoot, play the guiding role and be convenient to install.3, boron steel is adopted to carry out carburizing heat treatment, more can ensure that bolt can not form abundant residues austenite in carburizing heat treatment process, make that list of bolts layer tissue has high strength, high wear resistance make bolt have good cutting function simultaneously core structure there is again good toughness and good anti-fatigue performance.
Description
Technical field:
The present invention relates to bolt technical field, refer in particular to a kind of screw bolt manufacture process.
Background technique:
Bolt is in daily life is worked as and in the middle of industrial production manufacture, and be indispensable, bolt is also referred to as the rice of industry.The utilization of visible bolt is extensively.The operation strategies of bolt has: electronic product, engineering goods, digital product, power equipment, dynamo-electric engineering goods.Boats and ships, vehicle, hydraulic engineering, even chemical experiment also uses bolt.Anyway be that super many places are useful bolt.The precision bolt that such as digital product is used above.The Micro-bolt that DVD, photographic camera, glasses, clock and watch, electronics etc. use; The general bolt of TV, electric product, musical instrument, furniture etc.; Large-sized bolt, nut is then used as engineering, building, bridge; Traffic tool, aircraft, electric car, automobile etc. then sized by bolt using.Bolt industrially bears vital task, as long as the earth also exists industry, then the function of bolt is forever important.
Existing bolt generally comprises bolt head, lead screw, this bolt shank has a thread section, the tail end of thread section has cut a breach, this bolt exists certain not enough: during full-automatic mechanical assembling, at screw-in without when cutting the internal thread consistent with bolt during prefabricated interior threaded hole, cannot along bolt axial direction very level shoot, minority tilt bolt is caused to be shot, generation bolt is occasionally had to twist off phenomenon, existing bolt can form abundant residues austenite in carburizing heat treatment process, make list of bolts layer tissue intensity not high, wear no resistance, make bolt cutting function poor, simultaneously bolt core structure poor toughness and anti-fatigue performance poor, thus the demand in market cannot be met.
Summary of the invention:
The object of the present invention is to provide a kind of screw bolt manufacture process.
The technological scheme that the present invention realizes the employing of its object is: a kind of screw bolt manufacture process, and adopt boron steel wire rod, it mainly comprises the following steps: (1) makes bolt head; (2) make bolt shank, the cylinder guide section that this bolt shank comprises thread section and extended by thread section end, the tail end of bolt shank has cut a breach; (3) carburizing heat treatment: the bolt through above technique is carried out carburizing heat treatment, wherein, hardened face hardness is HV
0.3750-900, quenching centre hardness is HV
1.0400-500, the metallographic structure after quenching is quenched martensite tissue, and the surface hardness at 0.05-0.07mm place, tempering form edge is HV
0.3>=490; Tempering centre hardness is HV
1.0290-390, tempering breaking moment is 20N.m, and tempering metallographic structure is secondary troostite tissue, and carburized layer thickness is 0.1-0.23mm; (4) sandblasting: the bolt after carburizing heat treatment is carried out surface sand-blasting; (5) electroplate: the bolt after sandblasting is carried out electroplating surface silvery white environmental protection zinc-nickel.
Further and: the quenching time in described (3) carburizing heat treatment is 75-85 minute, and temper time is 70-80 minute.
The invention has the beneficial effects as follows:
1, the object of the breach of bolt shank tail end is in the component that bolt shank can screw in smoothly without prefabricated interior threaded hole, and cuts the internal thread consistent with bolt shank, continues to screw in being tightened together by two components.
2, the object of cylinder guide section ensures to shoot along bolt axial direction level, avoids tilt bolt to shoot, and play the guiding role and be convenient to install.
3, adopt boron steel to carry out carburizing heat treatment and replace traditional low carbon steel carburization process, more can ensure that bolt can not form abundant residues austenite in carburizing heat treatment process, make that list of bolts layer tissue has high strength, high wear resistance make bolt have good cutting function simultaneously core structure there is again good toughness and good anti-fatigue performance.
4, the present invention can meet the demand in market, and it puts goods on the market in enormous quantities and will produce positive social benefit and significant economic benefit.
Accompanying drawing illustrates:
Fig. 1 is fabrication processing figure of the present invention.
Fig. 2 is the structural representation of bolt.
Fig. 3 is A-A sectional view in Fig. 2.
Symbol description:
1 bolt head; 2 lead screw; 21 thread sections; 22 cylinder guide sections; 23 breach.
Embodiment:
Below in conjunction with specific embodiments and the drawings, the present invention is further described.
See shown in Fig. 1 ~ 3, a kind of screw bolt manufacture process, adopt boron steel wire rod, it mainly comprises the following steps: (1) makes bolt head 1, and the bolt head 1 in the present embodiment is hexagon flange bolt head; (2) make bolt shank 2, the cylinder guide section 22 that this bolt shank 2 comprises thread section 21 and extended by thread section 21 end, the tail end of bolt shank 2 has cut a breach 23; (3) carburizing heat treatment: the bolt through above technique is carried out carburizing heat treatment, wherein, the quenching time is 75-85 minute, and hardened face hardness is HV
0.3750-900, quenching centre hardness is HV
1.0400-500, the metallographic structure after quenching is quenched martensite tissue, and temper time is 70-80 minute, and the surface hardness at 0.05-0.07mm place, tempering form edge is HV
0.3>=490, tempering centre hardness is HV
1.0290-390, tempering breaking moment is 20N.m, and tempering metallographic structure is secondary troostite tissue, and carburized layer thickness is 0.1-0.23mm; (4) sandblasting: the bolt after carburizing heat treatment is carried out surface sand-blasting; (5) electroplate: the bolt after sandblasting is carried out electroplating surface silvery white environmental protection zinc-nickel.
The object of the breach 23 of above-mentioned bolt shank tail end is in the component that bolt shank 2 can screw in smoothly without prefabricated interior threaded hole, and cuts the internal thread consistent with bolt shank 2, continues to screw in being tightened together by two components.
The object of above-mentioned cylinder guide section 22 ensures to shoot along bolt axial direction level, avoids tilt bolt to shoot, and play the guiding role and be convenient to install.
The present invention adopts boron steel to carry out carburizing heat treatment to replace traditional low carbon steel carburization process, more can ensure that bolt can not form abundant residues austenite in carburizing heat treatment process, make that list of bolts layer tissue has high strength, high wear resistance make bolt have good cutting function simultaneously core structure there is again good toughness and good anti-fatigue performance.
The present invention can meet the demand in market, and it puts goods on the market in enormous quantities and will produce positive social benefit and significant economic benefit.
Certainly, the foregoing is only one embodiment of the present of invention, be not limit the scope of the present invention, all equivalences done according to structure, feature and principle described in the present patent application the scope of the claims change or modify, and all should be included in the present patent application the scope of the claims.
Claims (2)
1. a screw bolt manufacture process, is characterized in that: adopt boron steel wire rod, it mainly comprises the following steps: (1) makes bolt head; (2) bolt shank is made; The cylinder guide section that this bolt shank comprises thread section and extended by thread section end, the tail end of bolt shank has cut a breach; (3) carburizing heat treatment: the bolt through above technique is carried out carburizing heat treatment, wherein, hardened face hardness is HV
0.3750-900, quenching centre hardness is HV
1.0400-500, the metallographic structure after quenching is quenched martensite tissue, and the surface hardness at 0.05-0.07mm place, tempering form edge is HV
0.3>=490; Tempering centre hardness is HV
1.0290-390, tempering breaking moment is 20N.m, and tempering metallographic structure is secondary troostite tissue, and carburized layer thickness is 0.1-0.23mm; (4) sandblasting: the bolt after carburizing heat treatment is carried out surface sand-blasting; (5) electroplate: the bolt after sandblasting is carried out electroplating surface silvery white environmental protection zinc-nickel.
2. screw bolt manufacture process according to claim 1, is characterized in that: the quenching time in described (3) carburizing heat treatment is 75-85 minute, and temper time is 70-80 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310316597.6A CN103398067B (en) | 2013-07-17 | 2013-07-17 | A kind of screw bolt manufacture process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310316597.6A CN103398067B (en) | 2013-07-17 | 2013-07-17 | A kind of screw bolt manufacture process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103398067A CN103398067A (en) | 2013-11-20 |
| CN103398067B true CN103398067B (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310316597.6A Expired - Fee Related CN103398067B (en) | 2013-07-17 | 2013-07-17 | A kind of screw bolt manufacture process |
Country Status (1)
| Country | Link |
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| CN (1) | CN103398067B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048682A (en) * | 2016-08-08 | 2016-10-26 | 常熟市常力紧固件有限公司 | Production technology of corrosion-resistant bolt for automobile transmission system |
| CN106676463B (en) * | 2017-03-03 | 2020-03-31 | 中国矿业大学 | Surface deep layer strengthening method using graphitized micro-nano carbon material as diffusion source |
| CN109252197B (en) * | 2018-09-29 | 2021-06-29 | 中国人民解放军第五七一九工厂 | Method for electroplating silver on carburized part |
| DE102020102982A1 (en) * | 2020-02-05 | 2021-08-05 | Böllhoff Verbindungstechnik GmbH | Joining element, connection structure with the joining element, manufacturing method of the joining element and corresponding connection method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09314276A (en) * | 1996-05-23 | 1997-12-09 | Shinko Bolt Kk | Manufacture of high strength stainless bolt |
| CN2386242Y (en) * | 1999-07-02 | 2000-07-05 | 庄振基 | Improved structure of drilling tail screw |
| CN2463593Y (en) * | 2001-01-04 | 2001-12-05 | 小岗山螺丝股份有限公司 | Improved self-tapping screw |
| CN1441077A (en) * | 2002-02-28 | 2003-09-10 | 尾上广司 | High strength therad steel and high strength screw |
| CN101608307A (en) * | 2008-06-04 | 2009-12-23 | 梅西耶-布加蒂公司 | A kind of surface treatment method of the mechanical component of making by high-strength steel, and the tightness system that makes by described method |
| CN102581575A (en) * | 2012-03-21 | 2012-07-18 | 苏州新凌电炉有限公司 | Fabrication process of hexagonal flange toothed bolt |
| CN102644644A (en) * | 2011-02-16 | 2012-08-22 | 深圳市创智成科技股份有限公司 | Structure of bolt/stud with pre-positioning and guiding functions |
-
2013
- 2013-07-17 CN CN201310316597.6A patent/CN103398067B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09314276A (en) * | 1996-05-23 | 1997-12-09 | Shinko Bolt Kk | Manufacture of high strength stainless bolt |
| CN2386242Y (en) * | 1999-07-02 | 2000-07-05 | 庄振基 | Improved structure of drilling tail screw |
| CN2463593Y (en) * | 2001-01-04 | 2001-12-05 | 小岗山螺丝股份有限公司 | Improved self-tapping screw |
| CN1441077A (en) * | 2002-02-28 | 2003-09-10 | 尾上广司 | High strength therad steel and high strength screw |
| CN101608307A (en) * | 2008-06-04 | 2009-12-23 | 梅西耶-布加蒂公司 | A kind of surface treatment method of the mechanical component of making by high-strength steel, and the tightness system that makes by described method |
| CN102644644A (en) * | 2011-02-16 | 2012-08-22 | 深圳市创智成科技股份有限公司 | Structure of bolt/stud with pre-positioning and guiding functions |
| CN102581575A (en) * | 2012-03-21 | 2012-07-18 | 苏州新凌电炉有限公司 | Fabrication process of hexagonal flange toothed bolt |
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| Publication number | Publication date |
|---|---|
| CN103398067A (en) | 2013-11-20 |
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Granted publication date: 20150805 Termination date: 20170717 |