CN106903483A - A kind of technique for producing nuclear power fastener - Google Patents
A kind of technique for producing nuclear power fastener Download PDFInfo
- Publication number
- CN106903483A CN106903483A CN201710087032.3A CN201710087032A CN106903483A CN 106903483 A CN106903483 A CN 106903483A CN 201710087032 A CN201710087032 A CN 201710087032A CN 106903483 A CN106903483 A CN 106903483A
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- wire
- rod roll
- nuclear power
- technique
- rod
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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
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/46—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing oxalates
- C23C22/47—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing oxalates containing also phosphates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of technique for producing nuclear power fastener, comprise the following steps：It is in round steel billet using pouring molten steel, and carries out rolling steel bar；Then pre- finish rolling, finish rolling are carried out and obtains wire-rod roll, carry out reinforcing cooling, by annealing, pickling, take out line, forging rolling system or tapping formation products formed, finally carry out being packed after heat treatment is processed with surface coating.The fastener that production technology of the invention is obtained can be widely applied to the special industries such as nuclear power industry, high ferro carrier, Automobile Transportation industry, Aero-Space industry, petroleum chemical industry, with high rigidity, high intensity, the performance such as corrosion resistance is strong, inoxidizability is strong, reduce production cost, operating efficiency is improve, can be produced in batches.
Description
Technical field
The present invention relates to fastener production, more particularly to a kind of technique for producing nuclear power fastener.
Background technology
Fastener is typically used in every field as a kind of common part, but when fastener application to special industry
When, such as nuclear power industry, high ferro carrier, automobile high to performance requirements such as its hardness, intensity, corrosion resistance, inoxidizability
Carrier, Aero-Space industry, petroleum chemical industry etc..In the prior art, fastener is usually batch production, existing life
The fastener that production. art will produce the high performance requirements of foregoing special industry is extremely difficult, while production cost is high, work
Inefficiency.
The content of the invention
In view of the shortcomings of the prior art, the purpose of the present invention is that there is provided a kind of nuclear power fastener of producing
Technique, can be widely applied to nuclear power industry, high ferro carrier, Automobile Transportation industry, Aero-Space industry, petrochemical industry row
The special industries such as industry, with high rigidity, high intensity, the performance such as corrosion resistance is strong, inoxidizability is strong, reduce production cost, carry
Operating efficiency high, can produce in batches.
To achieve these goals, the technical solution adopted by the present invention is such：A kind of nuclear power fastener of producing
Technique, comprises the following steps：
（1）It is in round steel billet using pouring molten steel, and round steel billet is heated to 1000 ~ 1200 DEG C；
（2）Using high-speed rod-rolling mill by step（1）Round steel billet after middle heating carries out rolling steel bar；
（3）To step（2）In the steel bar Head and Tail Shape irregularity that obtains repaired, then carry out pre- finish rolling；
（4）To step（3）In steel bar Head and Tail Shape irregularity after pre- finish rolling repaired, then carry out finish rolling and obtain wire rod
And it is changed into the wire-rod roll of ring shape using Laying head；
（5）To step（4）The wire-rod roll for obtaining carries out reinforcing cooling, and 2 ~ 2.5L water/Kg steel is reached using specific water during cooling
Technique；
（6）Wire-rod roll is put into heating furnace and is heated slowly to 700 ~ 800 DEG C, and keep 6 ~ 7h, then wire-rod roll is being added
Slow cooling is to after less than 500 DEG C in hot stove, and taking out wire-rod roll from heating furnace naturally cools to normal temperature；
（7）By step（6）In wire-rod roll be put into normal temperature, concentration be 20 ~ 25% hydrochloric acid solution in 10 ~ 15min, it is clear with clear water
Corrosion product in desalinization of soil by flooding or leaching sour water, the wire-rod roll that then will have been processed successively forms epithelium in being put into oxalic acid liquid, phosphoric acid saline solution
It is secondary afterwards to be cleaned with clear water, and the wire-rod roll that will have been cleaned and metallic soap react to form metallic soap layer；
（8）By step（7）The wire-rod roll that middle treatment is completed first passes through continous way wire drawing machine and is slightly taken out and annealed, then by taking out
Line machine is cold drawn to required line footpath；
（9）By the forged shape for reaching semi-finished product of wire-rod roll, length and thickness, then semi-finished product are rolled over system or tapping to reach
To required screw thread, products formed is formed；
（10）By step（9）In products formed be heated to 800 ~ 900 DEG C after carry out Quenching Treatment, carry out height at 200 ~ 500 DEG C
Temperature tempering is simultaneously rapidly cooled to 30 ~ 40 DEG C；
（11）Surface treatment：A protective layer is covered with the surface of products formed, and carries out packing treatment.
As a kind of preferred scheme, the step（1）Middle molten steel by round billet continuous casting machine pour into a mould, poring rate be 3.5 ~
4m/min。
As a kind of preferred scheme, the step（7）In metallic soap be soda soap.
As a kind of preferred scheme, the step（9）In be forged to cold forging or heat between forge.
As a kind of preferred scheme, the step（10）Middle Quenching Treatment is using water, oil or air hardening.
As a kind of preferred scheme, the step（11）Middle surface treatment is using plating, galvanizing by dipping or mechanical plating.
Compared with prior art, beneficial effects of the present invention：The fastener that production technology of the invention is obtained can be extensive
The special industries such as nuclear power industry, high ferro carrier, Automobile Transportation industry, Aero-Space industry, petroleum chemical industry are applied to,
With high rigidity, high intensity, the performance such as corrosion resistance is strong, inoxidizability is strong, production cost is reduced, improves operating efficiency,
Can produce in batches.
Specific embodiment
With reference to specific embodiment, the invention will be further described.Following examples are only used for clearly illustrating
Technical scheme, and can not be limited the scope of the invention with this.
Embodiment 1：
A kind of technique for producing nuclear power fastener, comprises the following steps：
（1）It is in round steel billet using pouring molten steel, and round steel billet is heated to 1000 DEG C；
（2）Using high-speed rod-rolling mill by step（1）Round steel billet after middle heating carries out rolling steel bar；
（3）To step（2）In the steel bar Head and Tail Shape irregularity that obtains repaired, then carry out pre- finish rolling；
（4）To step（3）In steel bar Head and Tail Shape irregularity after pre- finish rolling repaired, then carry out finish rolling and obtain wire rod
And it is changed into the wire-rod roll of ring shape using Laying head；
（5）To step（4）The wire-rod roll for obtaining carries out reinforcing cooling, reaches the work of 2L water/Kg steel during cooling using specific water
Skill；
（6）Wire-rod roll is put into heating furnace and is heated slowly to 700 DEG C, and keep 6h, then by wire-rod roll in heating furnace
To after less than 500 DEG C, from heating furnace take out wire-rod roll naturally cools to normal temperature to slow cooling；
（7）By step（6）In wire-rod roll be put into 10min in the hydrochloric acid solution that normal temperature, concentration are 20%, clean hydrochloric acid with clear water
Corrosion product in water, the wire-rod roll that then will have been processed successively is put into oxalic acid liquid, phosphoric acid saline solution and forms secondary after epithelium
Cleaned with clear water, and the wire-rod roll that will have been cleaned reacts to form metallic soap layer with metallic soap；
（8）By step（7）The wire-rod roll that middle treatment is completed first passes through continous way wire drawing machine and is slightly taken out and annealed, then by taking out
Line machine is cold drawn to required line footpath；
（9）By the forged shape for reaching semi-finished product of wire-rod roll, length and thickness, then semi-finished product are rolled over system or tapping to reach
To required screw thread, products formed is formed；
（10）By step（9）In products formed be heated to 800 DEG C after carry out Quenching Treatment, carry out high tempering simultaneously at 500 DEG C
It is rapidly cooled to 30 DEG C；
（11）Surface treatment：A protective layer is covered with the surface of products formed, and carries out packing treatment.
Embodiment 2：
A kind of technique for producing nuclear power fastener, comprises the following steps：
（1）It is in round steel billet using pouring molten steel, and round steel billet is heated to 1100 DEG C；
（2）Using high-speed rod-rolling mill by step（1）Round steel billet after middle heating carries out rolling steel bar；
（3）To step（2）In the steel bar Head and Tail Shape irregularity that obtains repaired, then carry out pre- finish rolling；
（4）To step（3）In steel bar Head and Tail Shape irregularity after pre- finish rolling repaired, then carry out finish rolling and obtain wire rod
And it is changed into the wire-rod roll of ring shape using Laying head；
（5）To step（4）The wire-rod roll for obtaining carries out reinforcing cooling, and 2.25L water/Kg steel is reached using specific water during cooling
Technique；
（6）Wire-rod roll is put into heating furnace and is heated slowly to 750 DEG C, and keep 6.5h, then by wire-rod roll in heating furnace
To after less than 500 DEG C, from heating furnace take out wire-rod roll naturally cools to normal temperature to interior slow cooling；
（7）By step（6）In wire-rod roll be put into 13min in the hydrochloric acid solution that normal temperature, concentration are 22.5%, clean salt with clear water
Corrosion product in sour water, the wire-rod roll that then will have been processed successively is formed two after epithelium in being put into oxalic acid liquid, phosphoric acid saline solution
It is secondary to be cleaned with clear water, and the wire-rod roll that will have been cleaned and metallic soap react to form metallic soap layer；
（8）By step（7）The wire-rod roll that middle treatment is completed first passes through continous way wire drawing machine and is slightly taken out and annealed, then by taking out
Line machine is cold drawn to required line footpath；
（9）By the forged shape for reaching semi-finished product of wire-rod roll, length and thickness, then semi-finished product are rolled over system or tapping to reach
To required screw thread, products formed is formed；
（10）By step（9）In products formed be heated to 850 DEG C after carry out Quenching Treatment, carry out high tempering simultaneously at 350 DEG C
It is rapidly cooled to 35 DEG C；
（11）Surface treatment：A protective layer is covered with the surface of products formed, and carries out packing treatment.
Embodiment 3：
A kind of technique for producing nuclear power fastener, comprises the following steps：
（1）It is in round steel billet using pouring molten steel, and round steel billet is heated to 1200 DEG C；
（2）Using high-speed rod-rolling mill by step（1）Round steel billet after middle heating carries out rolling steel bar；
（3）To step（2）In the steel bar Head and Tail Shape irregularity that obtains repaired, then carry out pre- finish rolling；
（4）To step（3）In steel bar Head and Tail Shape irregularity after pre- finish rolling repaired, then carry out finish rolling and obtain wire rod
And it is changed into the wire-rod roll of ring shape using Laying head；
（5）To step（4）The wire-rod roll for obtaining carries out reinforcing cooling, and 2.5L water/Kg steel is reached using specific water during cooling
Technique；
（6）Wire-rod roll is put into heating furnace and is heated slowly to 800 DEG C, and keep 7h, then by wire-rod roll in heating furnace
To after less than 500 DEG C, from heating furnace take out wire-rod roll naturally cools to normal temperature to slow cooling；
（7）By step（6）In wire-rod roll be put into 15min in the hydrochloric acid solution that normal temperature, concentration are 25%, clean hydrochloric acid with clear water
Corrosion product in water, the wire-rod roll that then will have been processed successively is put into oxalic acid liquid, phosphoric acid saline solution and forms secondary after epithelium
Cleaned with clear water, and the wire-rod roll that will have been cleaned reacts to form metallic soap layer with metallic soap；
（8）By step（7）The wire-rod roll that middle treatment is completed first passes through continous way wire drawing machine and is slightly taken out and annealed, then by taking out
Line machine is cold drawn to required line footpath；
（9）By the forged shape for reaching semi-finished product of wire-rod roll, length and thickness, then semi-finished product are rolled over system or tapping to reach
To required screw thread, products formed is formed；
（10）By step（9）In products formed be heated to 900 DEG C after carry out Quenching Treatment, carry out high tempering simultaneously at 200 DEG C
It is rapidly cooled to 0 DEG C；
（11）Surface treatment：A protective layer is covered with the surface of products formed, and carries out packing treatment.
The preferably step of the invention（1）Middle molten steel is poured into a mould by round billet continuous casting machine, and poring rate is 3.5 ~ 4m/min, is increased
Operating efficiency is added.
The preferably step of the invention（7）In metallic soap be soda soap, increased lubricity.
The preferably step of the invention（9）In be forged to cold forging or heat between forge.
The preferably step of the invention（10）Middle Quenching Treatment is using water, oil or air hardening.
The preferably step of the invention（11）Middle surface treatment plays anti-corrosion using plating, galvanizing by dipping or mechanical plating
Erosion is acted on, attractive in appearance.
In sum, the fastener for being obtained using production technology of the invention can be widely applied to nuclear power industry, high ferro
The special industries such as carrier, Automobile Transportation industry, Aero-Space industry, petroleum chemical industry, with high rigidity, high intensity,
The performance such as corrosion resistance is strong, inoxidizability is strong, reduces production cost, improves operating efficiency, can produce in batches.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of the technology of the present invention principle is not departed from, some improvement and deformation can also be made, these improve and deform
Also should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of technique for producing nuclear power fastener, it is characterised in that comprise the following steps：
（1）It is in round steel billet using pouring molten steel, and round steel billet is heated to 1000 ~ 1200 DEG C；
（2）Using high-speed rod-rolling mill by step（1）Round steel billet after middle heating carries out rolling steel bar；
（3）To step（2）In the steel bar Head and Tail Shape irregularity that obtains repaired, then carry out pre- finish rolling；
（4）To step（3）In steel bar Head and Tail Shape irregularity after pre- finish rolling repaired, then carry out finish rolling and obtain wire rod
And it is changed into the wire-rod roll of ring shape using Laying head；
（5）To step（4）The wire-rod roll for obtaining carries out reinforcing cooling, and 2 ~ 2.5L water/Kg steel is reached using specific water during cooling
Technique；
（6）Wire-rod roll is put into heating furnace and is heated slowly to 700 ~ 800 DEG C, and keep 6 ~ 7h, then wire-rod roll is being added
Slow cooling is to after less than 500 DEG C in hot stove, and taking out wire-rod roll from heating furnace naturally cools to normal temperature；
（7）By step（6）In wire-rod roll be put into normal temperature, concentration be 20 ~ 25% hydrochloric acid solution in 10 ~ 15min, it is clear with clear water
Corrosion product in desalinization of soil by flooding or leaching sour water, the wire-rod roll that then will have been processed successively forms epithelium in being put into oxalic acid liquid, phosphoric acid saline solution
It is secondary afterwards to be cleaned with clear water, and the wire-rod roll that will have been cleaned and metallic soap react to form metallic soap layer；
（8）By step（7）The wire-rod roll that middle treatment is completed first passes through continous way wire drawing machine and is slightly taken out and annealed, then by taking out
Line machine is cold drawn to required line footpath；
（9）By the forged shape for reaching semi-finished product of wire-rod roll, length and thickness, then semi-finished product are rolled over system or tapping to reach
To required screw thread, products formed is formed；
（10）By step（9）In products formed be heated to 800 ~ 900 DEG C after carry out Quenching Treatment, carry out height at 200 ~ 500 DEG C
Temperature tempering is simultaneously rapidly cooled to 30 ~ 40 DEG C；
（11）Surface treatment：A protective layer is covered with the surface of products formed, and carries out packing treatment.
2. a kind of technique for producing nuclear power fastener according to claim 1, it is characterised in that：The step（1）In
Molten steel is poured into a mould by round billet continuous casting machine, and poring rate is 3.5 ~ 4m/min.
3. a kind of technique for producing nuclear power fastener according to claim 1, it is characterised in that：The step（7）In
Metallic soap be soda soap.
4. a kind of technique for producing nuclear power fastener according to claim 1, it is characterised in that：The step（9）In
Be forged to cold forging or heat between forge.
5. a kind of technique for producing nuclear power fastener according to claim 1, it is characterised in that：The step（10）In
Quenching Treatment is using water, oil or air hardening.
6. a kind of technique for producing nuclear power fastener according to claim 1, it is characterised in that：The step（11）In
Surface treatment is using plating, galvanizing by dipping or mechanical plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710087032.3A CN106903483A (en) | 2017-02-17 | 2017-02-17 | A kind of technique for producing nuclear power fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710087032.3A CN106903483A (en) | 2017-02-17 | 2017-02-17 | A kind of technique for producing nuclear power fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106903483A true CN106903483A (en) | 2017-06-30 |
Family
ID=59207728
Family Applications (1)
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| CN201710087032.3A Pending CN106903483A (en) | 2017-02-17 | 2017-02-17 | A kind of technique for producing nuclear power fastener |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443946A (en) * | 2003-04-17 | 2003-09-24 | 南京汽车集团有限公司 | Production process of high strength bolt with above 1300MPa |
| CN101514423A (en) * | 2009-03-27 | 2009-08-26 | 武汉钢铁(集团)公司 | Aluminiferous low-carbon cold heading wire rod steel and production method thereof |
| CN102861782A (en) * | 2012-10-31 | 2013-01-09 | 东莞市科力钢铁线材有限公司 | Manufacturing process of screw wires |
| CN104213033A (en) * | 2014-09-03 | 2014-12-17 | 马钢(集团)控股有限公司 | 60-steel hot rolling coil rod with high strength and high plasticity and production method thereof |
| CN104439984A (en) * | 2014-12-17 | 2015-03-25 | 常熟市华星精密铸件有限公司 | Machining process of aviation screw |
| CN105798546A (en) * | 2016-03-25 | 2016-07-27 | 大连新锋钢管厂 | Production process of fastening hoop |
-
2017
- 2017-02-17 CN CN201710087032.3A patent/CN106903483A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443946A (en) * | 2003-04-17 | 2003-09-24 | 南京汽车集团有限公司 | Production process of high strength bolt with above 1300MPa |
| CN101514423A (en) * | 2009-03-27 | 2009-08-26 | 武汉钢铁(集团)公司 | Aluminiferous low-carbon cold heading wire rod steel and production method thereof |
| CN102861782A (en) * | 2012-10-31 | 2013-01-09 | 东莞市科力钢铁线材有限公司 | Manufacturing process of screw wires |
| CN104213033A (en) * | 2014-09-03 | 2014-12-17 | 马钢(集团)控股有限公司 | 60-steel hot rolling coil rod with high strength and high plasticity and production method thereof |
| CN104439984A (en) * | 2014-12-17 | 2015-03-25 | 常熟市华星精密铸件有限公司 | Machining process of aviation screw |
| CN105798546A (en) * | 2016-03-25 | 2016-07-27 | 大连新锋钢管厂 | Production process of fastening hoop |
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Application publication date: 20170630 |