CN107378392A - A kind of high-strength bolt processing technology - Google Patents
A kind of high-strength bolt processing technology Download PDFInfo
- Publication number
- CN107378392A CN107378392A CN201710554301.2A CN201710554301A CN107378392A CN 107378392 A CN107378392 A CN 107378392A CN 201710554301 A CN201710554301 A CN 201710554301A CN 107378392 A CN107378392 A CN 107378392A
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- Prior art keywords
- bolt
- temperature
- blank
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- minutes
- 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.)
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Links
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 238000000137 annealing Methods 0.000 claims abstract description 41
- 238000010791 quenching Methods 0.000 claims abstract description 25
- 230000000171 quenching effect Effects 0.000 claims abstract description 25
- 238000005554 pickling Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 11
- 238000005266 casting Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 24
- 238000001035 drying Methods 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000002791 soaking Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims 3
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007493 shaping process 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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
-
- 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
- F16B33/00—Features common to bolt and nut
- F16B33/008—Corrosion preventing means
-
- 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
- F16B33/00—Features common to bolt and nut
- F16B33/06—Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure or fretting
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A kind of high-strength bolt processing technology, belongs to technical field of bolt processing, and the technique is to comprise the steps of：(1) raw material progress casting is obtained into blank；(2) blank is subjected to pickling；(3) thread forming is carried out to blank using screw-rolling machine；(4) it is passivated processing；(5) bolt is subjected to Quenching Treatment；(6) bolt is put into heating furnace and once annealed, then carry out double annealing, obtain finished product high-strength bolt.The bolt hardness and intensity of the present invention is high, wear-resistant, improves the service life of bolt；The bolt of the present invention is corrosion-resistant, is not easy to get rusty, using effect is good；Tensile strength of the present invention is big, is not easily broken.
Description
Technical field
The invention belongs to technical field of bolt processing, more particularly to a kind of high-strength bolt processing technology.
Background technology
High-strength bolt is the fastener commonly used in machinery industry, and current processing mode is generally the shaping of turning, by force
Degree is often difficult to ensure that, the not dangerous phenomenons such as generation is turned around in use sometimes, bar portion is broken, industrial production is endangered very
Greatly.Therefore high-strength bolt production method is studied and improved, it is ensured that the quality stability of high-strength bolt, to technology and
Expanding economy plays an important roll.In addition, when bolt is in the environment of relative humidity, get rusty easily corrosion, ultimately results in
Fracture or crackle, form potential accident source.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of high intensity and corrosion resistant bolt processing technic featuring.
To solve the above problems, a kind of high-strength bolt processing technology of the present invention, the technique is by following steps
Composition：
(1) raw material is selected, raw material progress casting is obtained into blank；
(2) blank is subjected to pickling, pickling time is 10~15 minutes, optimal cleaning effect is obtained, then by blank
It is put into baking room to be dried, drying time is 20~25 minutes, and drying temperature is 85~95 DEG C；
(3) thread forming is carried out to blank using screw-rolling machine；
(4) processing is passivated, bolt is put into treatment fluid and soaked, treatment fluid temperature is 34~44 DEG C, soak time
For 8~11 minutes；
(5) bolt is subjected to Quenching Treatment, bolt is put into quenching oil, quenching oil temperature is 880~900 DEG C, then
Isothermal holding is carried out, holding temperature is 840~860 DEG C, and soaking time is 1.5~1.8 hours, is finally putting into fluid and is cooled to
Room temperature；
(6) bolt is put into heating furnace and once annealed, one time annealing temperature is 920~950 DEG C, and annealing time is
3~4 hours, double annealing is then carried out, double annealing temperature is 500~550 DEG C, and the double annealing time is 6~7 hours, most
Room temperature is naturally cooled in stove afterwards, obtains finished product high-strength bolt.
Compared with prior art, the present invention has advantages below：The bolt hardness and intensity of the present invention is high, wear-resistant, carries
The service life of high bolt；The bolt of the present invention is corrosion-resistant, is not easy to get rusty, using effect is good；Tensile strength of the present invention is big, is not easy
Fracture.
Embodiment
Embodiment 1
A kind of high-strength bolt processing technology, the technique are to comprise the steps of：
(1) raw material is selected, raw material progress casting is obtained into blank；
(2) blank is subjected to pickling, pickling time is 10 minutes, obtains optimal cleaning effect, is then put into blank
Baking room is dried, and drying time is 20 minutes, and drying temperature is 85 DEG C；
(3) thread forming is carried out to blank using screw-rolling machine；
(4) processing is passivated, bolt is put into treatment fluid and soaked, treatment fluid temperature is 34 DEG C, and soak time is 8 points
Clock；
(5) bolt is subjected to Quenching Treatment, bolt is put into quenching oil, quenching oil temperature is 880 DEG C, is then protected
Temperature processing, holding temperature are 840 DEG C, and soaking time is 1.5 hours, is finally putting into fluid and is cooled to room temperature；
(6) bolt is put into heating furnace and once annealed, an annealing temperature is 920 DEG C, and annealing time is 3 small
When, double annealing is then carried out, double annealing temperature is 500 DEG C, and the double annealing time is 6 hours, natural cooling in last stove
To room temperature, finished product high-strength bolt is obtained.
It is demonstrated experimentally that under this parameter, the corrosion resistance of bolt is preferable, and the hardness of bolt is higher.
Embodiment 2
A kind of high-strength bolt processing technology, the technique are to comprise the steps of：
(1) raw material is selected, raw material progress casting is obtained into blank；
(2) blank is subjected to pickling, pickling time is 13 minutes, obtains optimal cleaning effect, is then put into blank
Baking room is dried, and drying time is 22 minutes, and drying temperature is 89 DEG C；
(3) thread forming is carried out to blank using screw-rolling machine；
(4) processing is passivated, bolt is put into treatment fluid and soaked, treatment fluid temperature is 39 DEG C, soak time 10
Minute；
(5) bolt is subjected to Quenching Treatment, bolt is put into quenching oil, quenching oil temperature is 890 DEG C, is then protected
Temperature processing, holding temperature are 850 DEG C, and soaking time is 1.6 hours, is finally putting into fluid and is cooled to room temperature；
(6) bolt is put into heating furnace and once annealed, an annealing temperature is 935 DEG C, and annealing time is 3.5 small
When, double annealing is then carried out, double annealing temperature is 525 DEG C, and the double annealing time is 6.5 hours, naturally cold in last stove
But to room temperature, finished product high-strength bolt is obtained.
It is demonstrated experimentally that under this parameter, the hardness highest of bolt, intensity highest, using effect is best.
Therefore, the present embodiment is preferred embodiment.
Embodiment 3
A kind of high-strength bolt processing technology, the technique are to comprise the steps of：
(1) raw material is selected, raw material progress casting is obtained into blank；
(2) blank is subjected to pickling, pickling time is 15 minutes, obtains optimal cleaning effect, is then put into blank
Baking room is dried, and drying time is 25 minutes, and drying temperature is 95 DEG C；
(3) thread forming is carried out to blank using screw-rolling machine；
(4) processing is passivated, bolt is put into treatment fluid and soaked, treatment fluid temperature is 44 DEG C, soak time 11
Minute；
(5) bolt is subjected to Quenching Treatment, bolt is put into quenching oil, quenching oil temperature is 900 DEG C, is then protected
Temperature processing, holding temperature are 860 DEG C, and soaking time is 1.8 hours, is finally putting into fluid and is cooled to room temperature；
(6) bolt is put into heating furnace and once annealed, an annealing temperature is 950 DEG C, and annealing time is 4 small
When, double annealing is then carried out, double annealing temperature is 550 DEG C, and the double annealing time is 7 hours, natural cooling in last stove
To room temperature, finished product high-strength bolt is obtained.
It is demonstrated experimentally that under this parameter, the corrosion resistance of bolt is best, and the compression strength of bolt is big.
Claims (4)
- A kind of 1. high-strength bolt processing technology, it is characterised in that：The technique is to comprise the steps of：(1) raw material is selected, raw material progress casting is obtained into blank；(2) blank is subjected to pickling, pickling time is 10~15 minutes, obtains optimal cleaning effect, is then put into blank Baking room is dried, and drying time is 20~25 minutes, and drying temperature is 85~95 DEG C；(3) thread forming is carried out to blank using screw-rolling machine；(4) be passivated processing, bolt be put into treatment fluid and soaked, treatment fluid temperature be 34~44 DEG C, soak time be 8~ 11 minutes；(5) bolt is subjected to Quenching Treatment, bolt is put into quenching oil, quenching oil temperature is 880~900 DEG C, is then carried out Isothermal holding, holding temperature are 840~860 DEG C, and soaking time is 1.5~1.8 hours, is finally putting into fluid and is cooled to room Temperature；(6) bolt is put into heating furnace and once annealed, an annealing temperature is 920~950 DEG C, and annealing time is 3~4 Hour, double annealing is then carried out, double annealing temperature is 500~550 DEG C, and the double annealing time is 6~7 hours, last stove Room temperature is inside naturally cooled to, obtains finished product high-strength bolt.
- A kind of 2. high-strength bolt processing technology according to claim 1, it is characterised in that：The technique is by following steps group Into：(1) raw material is selected, raw material progress casting is obtained into blank；(2) blank is subjected to pickling, pickling time is 10 minutes, obtains optimal cleaning effect, blank then is put into drying Room is dried, and drying time is 20 minutes, and drying temperature is 85 DEG C；(3) thread forming is carried out to blank using screw-rolling machine；(4) processing is passivated, bolt is put into treatment fluid and soaked, treatment fluid temperature is 34 DEG C, and soak time is 8 minutes；(5) bolt is subjected to Quenching Treatment, bolt is put into quenching oil, quenching oil temperature is 880 DEG C, is then carried out at insulation Reason, holding temperature are 840 DEG C, and soaking time is 1.5 hours, is finally putting into fluid and is cooled to room temperature；(6) bolt is put into heating furnace and once annealed, an annealing temperature is 920 DEG C, and annealing time is 3 hours, so After carry out double annealing, double annealing temperature is 500 DEG C, and the double annealing time is 6 hours, and room is naturally cooled in last stove Temperature, obtain finished product high-strength bolt.
- A kind of 3. high-strength bolt processing technology according to claim 1, it is characterised in that：The technique is by following steps group Into：(1) raw material is selected, raw material progress casting is obtained into blank；(2) blank is subjected to pickling, pickling time is 13 minutes, obtains optimal cleaning effect, blank then is put into drying Room is dried, and drying time is 22 minutes, and drying temperature is 89 DEG C；(3) thread forming is carried out to blank using screw-rolling machine；(4) processing is passivated, bolt is put into treatment fluid and soaked, treatment fluid temperature is 39 DEG C, and soak time is 10 minutes；(5) bolt is subjected to Quenching Treatment, bolt is put into quenching oil, quenching oil temperature is 890 DEG C, is then carried out at insulation Reason, holding temperature are 850 DEG C, and soaking time is 1.6 hours, is finally putting into fluid and is cooled to room temperature；(6) bolt being put into heating furnace and once annealed, an annealing temperature is 935 DEG C, and annealing time is 3.5 hours, Then double annealing is carried out, double annealing temperature is 525 DEG C, and the double annealing time is 6.5 hours, is naturally cooled in last stove Room temperature, obtain finished product high-strength bolt.
- A kind of 4. high-strength bolt processing technology according to claim 1, it is characterised in that：The technique is by following steps group Into：(1) raw material is selected, raw material progress casting is obtained into blank；(2) blank is subjected to pickling, pickling time is 15 minutes, obtains optimal cleaning effect, blank then is put into drying Room is dried, and drying time is 25 minutes, and drying temperature is 95 DEG C；(3) thread forming is carried out to blank using screw-rolling machine；(4) processing is passivated, bolt is put into treatment fluid and soaked, treatment fluid temperature is 44 DEG C, and soak time is 11 minutes；(5) bolt is subjected to Quenching Treatment, bolt is put into quenching oil, quenching oil temperature is 900 DEG C, is then carried out at insulation Reason, holding temperature are 860 DEG C, and soaking time is 1.8 hours, is finally putting into fluid and is cooled to room temperature；(6) bolt is put into heating furnace and once annealed, an annealing temperature is 950 DEG C, and annealing time is 4 hours, so After carry out double annealing, double annealing temperature is 550 DEG C, and the double annealing time is 7 hours, and room is naturally cooled in last stove Temperature, obtain finished product high-strength bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554301.2A CN107378392A (en) | 2017-07-10 | 2017-07-10 | A kind of high-strength bolt processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554301.2A CN107378392A (en) | 2017-07-10 | 2017-07-10 | A kind of high-strength bolt processing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107378392A true CN107378392A (en) | 2017-11-24 |
Family
ID=60335341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710554301.2A Pending CN107378392A (en) | 2017-07-10 | 2017-07-10 | A kind of high-strength bolt processing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107378392A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109531063A (en) * | 2018-11-27 | 2019-03-29 | 重庆旺达汽车零部件有限公司 | A kind of processing method of high-strength bolts |
| CN109909690A (en) * | 2019-04-04 | 2019-06-21 | 浙江力友汽车科技有限公司 | A kind of processing technology of gearbox bolt |
| CN110055382A (en) * | 2019-05-10 | 2019-07-26 | 安徽长江紧固件有限责任公司 | A kind of manufacturing method of torque-shear type stud |
| CN113564312A (en) * | 2021-06-25 | 2021-10-29 | 江苏锦瑞金属制品有限公司 | Nut production method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202005015611U1 (en) * | 2005-09-30 | 2005-12-29 | Textron Verbindungstechnik Gmbh & Co. Ohg | Bolts or screws with high rigidity are made from steel wire by hot rolling and cooling glowing product by blowing on air, then rolling out and cold-forming to produce head and thread |
| CN101890618A (en) * | 2010-06-17 | 2010-11-24 | 鹏驰五金制品有限公司 | Processing method of high-strength bolts |
| CN102943210A (en) * | 2012-11-09 | 2013-02-27 | 谢亚平 | High-strength bolt and processing method thereof |
| CN103216509A (en) * | 2013-05-10 | 2013-07-24 | 江苏永昊高强度螺栓有限公司 | High-strength bolt and processing method thereof |
| CN105149866A (en) * | 2015-07-16 | 2015-12-16 | 江苏永昊高强度螺栓有限公司 | Method for machining high-strength T-shaped bolt |
-
2017
- 2017-07-10 CN CN201710554301.2A patent/CN107378392A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202005015611U1 (en) * | 2005-09-30 | 2005-12-29 | Textron Verbindungstechnik Gmbh & Co. Ohg | Bolts or screws with high rigidity are made from steel wire by hot rolling and cooling glowing product by blowing on air, then rolling out and cold-forming to produce head and thread |
| CN101890618A (en) * | 2010-06-17 | 2010-11-24 | 鹏驰五金制品有限公司 | Processing method of high-strength bolts |
| CN102943210A (en) * | 2012-11-09 | 2013-02-27 | 谢亚平 | High-strength bolt and processing method thereof |
| CN103216509A (en) * | 2013-05-10 | 2013-07-24 | 江苏永昊高强度螺栓有限公司 | High-strength bolt and processing method thereof |
| CN105149866A (en) * | 2015-07-16 | 2015-12-16 | 江苏永昊高强度螺栓有限公司 | Method for machining high-strength T-shaped bolt |
Non-Patent Citations (1)
| Title |
|---|
| 孟延军，关昕: "《金属学及热处理》", 31 March 2008, 北京：冶金工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109531063A (en) * | 2018-11-27 | 2019-03-29 | 重庆旺达汽车零部件有限公司 | A kind of processing method of high-strength bolts |
| CN109909690A (en) * | 2019-04-04 | 2019-06-21 | 浙江力友汽车科技有限公司 | A kind of processing technology of gearbox bolt |
| CN110055382A (en) * | 2019-05-10 | 2019-07-26 | 安徽长江紧固件有限责任公司 | A kind of manufacturing method of torque-shear type stud |
| CN113564312A (en) * | 2021-06-25 | 2021-10-29 | 江苏锦瑞金属制品有限公司 | Nut production method |
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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 | ||
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Application publication date: 20171124 |