CN110340617A - A kind of anti-corrosion and high strength hex bolts production technology - Google Patents

A kind of anti-corrosion and high strength hex bolts production technology Download PDF

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Publication number
CN110340617A
CN110340617A CN201910632196.9A CN201910632196A CN110340617A CN 110340617 A CN110340617 A CN 110340617A CN 201910632196 A CN201910632196 A CN 201910632196A CN 110340617 A CN110340617 A CN 110340617A
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CN
China
Prior art keywords
bolt
production technology
corrosion
high strength
hex bolts
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
Application number
CN201910632196.9A
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Chinese (zh)
Inventor
张步军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haiyan County Machinery Co Ltd
Original Assignee
Haiyan County Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Haiyan County Machinery Co Ltd filed Critical Haiyan County Machinery Co Ltd
Priority to CN201910632196.9A priority Critical patent/CN110340617A/en
Publication of CN110340617A publication Critical patent/CN110340617A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

Abstract

The invention discloses a kind of anti-corrosion and high strength hex bolts production technology, comprise the following steps that step 1, embryo material are chosen;Step 2, cold-heading molding;Step 3, cutting turning;Step 4, turning;Step 5, carburizing;Step 6, lonneal;Step 7, thread rolling;Step 8, cleaning;Step 9, colouring;Step 10, packaging and warehousing, the present invention is by doing modifications and adaptations to prior art process, increase carburization step in process of production, so that forming carburized layer in the outer surface of bolt, to increase the hardness of bolt surface, as long as the production technology carries out primary heating process to bolt, reduce energy consumption, cost is saved, while bolt strength is higher, toughness is more preferable, corrosion resistance is stronger, the weather environment that can adapt to severe complexity, applies and is not easy to crack on shaking biggish equipment, longer life expectancy.

Description

A kind of anti-corrosion and high strength hex bolts production technology
Technical field
The present invention relates to technical field of bolt processing, in particular to a kind of anti-corrosion and high strength hex bolts production technology.
Background technique
Bolt is the physics and mathematical principle of the inclined-plane circular rotating and frictional force using object, is fastened by easy stages The tool of implements parts.Bolt is the general saying of fastener, daily pet phrase.Bolt is work indispensable in daily life Industry necessity: the minimum bolt that such as camera, glasses, clock and watch, electronics use;TV, electric product, musical instrument, furniture etc. General bolt;Large-sized bolt, nut are then used as engineering, building, bridge;Traffic tool, aircraft, electric car, automobile etc. Then it is used in combination for big stove bolt.Bolt industrially bears vital task.
A kind of existing hex bolts, head be turret head, be both needed to process in the top and bottom of turret head it is angled, The technique of bolt is constantly improved, and the performance of bolt also constantly changes in follow-up demand, and modern industry wants bolt Ask higher and higher, especially to the intensity requirement of bolt, the intensity of bolt traditional at present cannot good meet demand, bolt It is easy to loosen and crack in the equipment of vibration.
Summary of the invention
The object of the present invention is to provide a kind of this bolt that anti-corrosion and high strength hex bolts production technology manufactures tools The feature for having intensity high, wear-resisting.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of anti-corrosion and high strength hex bolts production technology, comprises the following steps that
Step 1, embryo material are chosen, and selection medium carbon alloy steel is raw material, to choose different specification blanks according to design;
Step 2, cold-heading molding, cold-heading goes out head and the bar portion of bolt blank in the punching of two moulds two or double blow solid die cold header;
Step 3, cutting turning, by the head cutter of bolt blank at hexagon;
Step 4, turning carry out turning to the resulting bolt blank of step 3, remove the burr and overlap on bolt blank head, and By the corner turning camber on head;
Step 4 gained bolt blank is placed in converter by step 5, carburizing, and converter carries out carburizing after being raised to 900 degree from room temperature, is seeped The carbon time 2-4 hours, so that the surface of bolt blank forms carburized layer;
Step 6, lonneal then carry out lonneal to bolt blank, are finally cooled down;
Bar portion is rubbed screw thread with thread rolling machine by step 7, thread rolling;
Step 8, cleaning, clean phosphating coat with alkaline solution;
Step 9, colouring, in one layer of anti-oxidation wearing layer of surface coating of bolt;
Step 10, packaging and warehousing.
Preferably, the continuous converter of the converter model SLQ260.
Preferably, further including cleaning to nut embryo material outer surface before the step 4, greasy dirt is removed.
Preferably, the tempering temperature control is at 300~310 DEG C, soaking time is 80~90 minutes, and tempering is completed Afterwards, it is water-cooled.
Preferably, the anti-oxidation wearing layer is the anti-oxidation wear-preventing paint of RLHY-31 high temperature resistant.
The present invention provides a kind of hex bolts production technology, the present invention is by improving and adjusting to prior art process It is whole, increase carburization step in process of production, so that carburized layer is formed in the outer surface of bolt, to increase the hard of bolt surface Degree;As long as the production technology carries out primary heating process to bolt, reduces energy consumption, saved cost, while bolt is strong Du Genggao, toughness is more preferable, and corrosion resistance is stronger, can adapt to the weather environment of severe complexity, applies and is shaking biggish set It is standby to be above not easy to crack, longer life expectancy.
Specific embodiment
As described below is only the preferred embodiment of the present invention, and protection scope is not limited merely to the embodiment, all to belong to Protection scope of the present invention should belong in technical solution under thinking of the present invention.Simultaneously it should be pointed out that for the art For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.
A kind of anti-corrosion and high strength hex bolts production technology, comprises the following steps that
Step 1, embryo material are chosen, and selection medium carbon alloy steel is raw material, to choose different specification blanks according to design;
Step 2, cold-heading molding, cold-heading goes out head and the bar portion of bolt blank in the punching of two moulds two or double blow solid die cold header;
Step 3, cutting turning, by the head cutter of bolt blank at hexagon;
Step 4, turning carry out turning to the resulting bolt blank of step 3, remove the burr and overlap on bolt blank head, and By the corner turning camber on head;
Step 4 gained bolt blank is placed in converter by step 5, carburizing, the continuous converter of converter model SLQ260, converter from Room temperature carries out carburizing after being raised to 900 degree, and carburizing time 2-4 hours, so that the surface of bolt blank forms carburized layer;
Step 6, lonneal, then carry out lonneal to bolt blank, and tempering temperature is controlled at 300~310 DEG C, heat preservation Between be 80~90 minutes, after the completion of tempering, be water-cooled;
Bar portion is rubbed screw thread with thread rolling machine by step 7, thread rolling;
Step 8, cleaning, clean phosphating coat with alkaline solution;
Step 9, colouring, in one layer of anti-oxidation wearing layer of surface coating of bolt, anti-oxidation wearing layer is anti-for RLHY-31 high temperature resistant Aoxidize wear-preventing paint;
Step 10, packaging and warehousing.
In addition to this, further include being cleaned to nut embryo material outer surface before step 4, remove greasy dirt.
The present invention provides a kind of hex bolts production technology, the present invention is by improving and adjusting to prior art process It is whole, increase carburization step in process of production, so that carburized layer is formed in the outer surface of bolt, to increase the hard of bolt surface Degree;As long as the production technology carries out primary heating process to bolt, reduces energy consumption, saved cost, while bolt is strong Du Genggao, toughness is more preferable, and corrosion resistance is stronger, can adapt to the weather environment of severe complexity, applies and is shaking biggish set It is standby to be above not easy to crack, longer life expectancy.

Claims (5)

1. a kind of anti-corrosion and high strength hex bolts production technology, which is characterized in that comprise the following steps that
Step 1, embryo material are chosen, and selection medium carbon alloy steel is raw material, to choose different specification blanks according to design;
Step 2, cold-heading molding, cold-heading goes out head and the bar portion of bolt blank in the punching of two moulds two or double blow solid die cold header;
Step 3, cutting turning, by the head cutter of bolt blank at hexagon;
Step 4, turning carry out turning to the resulting bolt blank of step 3, remove the burr and overlap on bolt blank head, and By the corner turning camber on head;
Step 4 gained bolt blank is placed in converter by step 5, carburizing, and converter carries out carburizing after being raised to 900 degree from room temperature, is seeped The carbon time 2-4 hours, so that the surface of bolt blank forms carburized layer;
Step 6, lonneal then carry out lonneal to bolt blank, are finally cooled down;
Bar portion is rubbed screw thread with thread rolling machine by step 7, thread rolling;
Step 8, cleaning, clean phosphating coat with alkaline solution;
Step 9, colouring, in one layer of anti-oxidation wearing layer of surface coating of bolt;
Step 10, packaging and warehousing.
2. a kind of anti-corrosion and high strength hex bolts production technology according to claim 1, which is characterized in that described turn The continuous converter of furnace model SLQ260.
3. a kind of anti-corrosion and high strength hex bolts production technology according to claim 1, which is characterized in that the step Further include being cleaned to nut embryo material outer surface before rapid 4, removes greasy dirt.
4. a kind of anti-corrosion and high strength hex bolts production technology according to claim 1, which is characterized in that described time At 300~310 DEG C, soaking time is 80~90 minutes for fiery temperature control, after the completion of tempering, is water-cooled.
5. a kind of anti-corrosion and high strength hex bolts production technology according to claim 1, which is characterized in that described anti- Oxidation wearing layer is the anti-oxidation wear-preventing paint of RLHY-31 high temperature resistant.
CN201910632196.9A 2019-07-13 2019-07-13 A kind of anti-corrosion and high strength hex bolts production technology Pending CN110340617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910632196.9A CN110340617A (en) 2019-07-13 2019-07-13 A kind of anti-corrosion and high strength hex bolts production technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910632196.9A CN110340617A (en) 2019-07-13 2019-07-13 A kind of anti-corrosion and high strength hex bolts production technology

Publications (1)

Publication Number Publication Date
CN110340617A true CN110340617A (en) 2019-10-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910632196.9A Pending CN110340617A (en) 2019-07-13 2019-07-13 A kind of anti-corrosion and high strength hex bolts production technology

Country Status (1)

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CN (1) CN110340617A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111545996A (en) * 2020-04-23 2020-08-18 成都迈特航空制造有限公司 Machining method of flat-head bolt for locking hoop
CN112518254A (en) * 2020-11-30 2021-03-19 中国航空工业标准件制造有限责任公司 Machining method of high-precision bolt
CN112692524A (en) * 2021-01-08 2021-04-23 浙江汇丰汽车零部件股份有限公司 Guide pin production process

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000317738A (en) * 1999-05-10 2000-11-21 Hamanaka Nut Kk Manufacture of stainless steel bolt
KR20030094981A (en) * 2002-06-11 2003-12-18 주식회사 아세아볼트 Rolling dice used therein and method for producing bolt
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
CN104625577A (en) * 2013-11-06 2015-05-20 西安福斯特动力科技有限公司 Bolt machining technology
CN104625576A (en) * 2013-11-06 2015-05-20 西安福斯特动力科技有限公司 Anti-corrosion bolt machining technology
CN109719470A (en) * 2019-03-07 2019-05-07 嘉兴斯迈欧五金科技有限公司 A kind of production technology of high-strength fastening bolt
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000317738A (en) * 1999-05-10 2000-11-21 Hamanaka Nut Kk Manufacture of stainless steel bolt
KR20030094981A (en) * 2002-06-11 2003-12-18 주식회사 아세아볼트 Rolling dice used therein and method for producing bolt
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
CN104625577A (en) * 2013-11-06 2015-05-20 西安福斯特动力科技有限公司 Bolt machining technology
CN104625576A (en) * 2013-11-06 2015-05-20 西安福斯特动力科技有限公司 Anti-corrosion bolt machining technology
CN109719470A (en) * 2019-03-07 2019-05-07 嘉兴斯迈欧五金科技有限公司 A kind of production technology of high-strength fastening bolt
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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
机械工业标准化技术服务部: "《机械工业典型工艺与工艺守则汇编 第2版》", 30 June 1992 *
颜国君: "《金属材料学》", 31 March 2019, 冶金工业出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111545996A (en) * 2020-04-23 2020-08-18 成都迈特航空制造有限公司 Machining method of flat-head bolt for locking hoop
CN112518254A (en) * 2020-11-30 2021-03-19 中国航空工业标准件制造有限责任公司 Machining method of high-precision bolt
CN112692524A (en) * 2021-01-08 2021-04-23 浙江汇丰汽车零部件股份有限公司 Guide pin production process

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Application publication date: 20191018