CN104625575A - Machining technology of integrally-formed multi-thread bolt - Google Patents
Machining technology of integrally-formed multi-thread bolt Download PDFInfo
- Publication number
- CN104625575A CN104625575A CN201310541869.2A CN201310541869A CN104625575A CN 104625575 A CN104625575 A CN 104625575A CN 201310541869 A CN201310541869 A CN 201310541869A CN 104625575 A CN104625575 A CN 104625575A
- Authority
- CN
- China
- Prior art keywords
- thread
- threads
- bolt
- screw
- tempering
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
- B21K1/46—Making machine elements bolts, studs, or the like with heads
- B21K1/48—Machines working with hammers, e.g. beating in a radial direction, for forming heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
-
- 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
- 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
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
Abstract
The invention discloses a machining technology of an integrally-formed multi-thread bolt. The technology comprises the following steps of a cold heading working procedure, wherein a wire rod is cut off, and is headed into a screw blank, and a head portion, cross recess (or other head-type) thread billet diameters and rod lengths, and head lower fillets are formed; a thread rolling working procedure, wherein threads are rolled out of the cold-heading blank, a thread rolling machine is adopted to machine threads on a screw rod, a high-tooth thread rolling plate and a low-tooth thread rolling plate are arranged on the thread rolling machine, high threads and low threads are formed at a time, the height of the high threads ranges from 8.0 mm to 8.5 mm, and the height of the low threads ranges from 5.5 mm to 6.5 mm; heat treatment, wherein, a bolt is quenched by quenching oil at the temperature of 800 DEG C+/-10 DEG C, and two-time tempering is carried out on the quenched bolt; carburizing treatment, wherein a carburizing agent is conveyed to a tempering furnace, and carburizing treatment is carried out for 50 minutes to 120 minutes at the temperature ranging from 1100 DEG C to 1150 DEG C; and finally, cleaning and air drying are carried out, and the finished bolt is obtained. According to the technology, the high threads and the low threads can be rolled out at a time. The machining technology is simple, and the qualified rate of the finished product is high.
Description
Technical field
The present invention relates to transmission device bolt field, be specifically related to one-shot forming many screw bolts processing technology.
Background technology
The production processes such as the bolt production method of prior art comprises dish unit, annealing, pickling, takes out line, shaping, tapping, heat treatment, surface treatment.Showing Technology for Heating Processing for the high strength nut that desired strength is high is adopt the technique such as carburizing or cyaniding+Q-tempering to process, and adopt the 850-900 DEG C of full annealing technique being incubated 10 hours, but utilize the bolt of this explained hereafter contraction percentage of area when quenching larger, deformation rate is large, low with the fit rate of nut, percent defective is sometimes more than 10%; And existing bolt easily produces rust staining after long-term use.
Summary of the invention
The technical problem to be solved in the present invention is to provide one-shot forming many screw bolts processing technology, disposablely rubs high screw thread, low thread twice screw thread, and processing technology is simple, and the qualified interest rate of finished product is high.
For achieving the above object, technical scheme of the present invention is as follows:
One-shot forming many screw bolts processing technology, comprises the following steps:
Cold-heading operation: by wire rod cut off, upsetting becomes screw blank piece, formed head, cross recess (or other head dummy) thread billet dia and bar long, under head fillet;
Thread rolling operation: the blank that cold-heading is good rubs screw thread; Adopt the screw thread in thread rolling machine processing lead screw, thread rolling machine is provided with height tooth screw plate, disposablely rubs high screw thread, low thread twice screw thread; The height of described high screw thread is 8.0-8.5mm; The height of described low thread is 5.5 ~ 6.5mm;
Heat treatment: by bolt at 800 DEG C ± 10 DEG C, quench with quenching oil, then the bolt after quenching is carried out double tempering,
Then carry out Carburization Treatment, carburizer sent in tempering furnace, Carburization Treatment 50 ~ 120min in 1100 ° of-1150 DEG C of temperature ranges,
Finally clean, air-dry, get product bolt.
In a preferred embodiment of the invention, the temperature of a described tempering is 500 ± 3 DEG C, and tempering time is 230 ~ 245 minutes; The temperature of described double tempering is 600 ± 3 DEG C, and tempering time is 180 ± 5 minutes.
By technique scheme, the invention has the beneficial effects as follows:
The present invention is disposable rubs high screw thread, low thread twice screw thread, and processing technology is simple, and the qualified interest rate of finished product is high.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, setting forth the present invention further.
One-shot forming many screw bolts processing technology, comprises the following steps:
Cold-heading operation: by wire rod cut off, upsetting becomes screw blank piece, formed head, cross recess (or other head dummy) thread billet dia and bar long, under head fillet;
Thread rolling operation: the blank that cold-heading is good rubs screw thread; Adopt the screw thread in thread rolling machine processing lead screw, thread rolling machine is provided with height tooth screw plate, disposablely rubs high screw thread, low thread twice screw thread; The height of described high screw thread is 8.0-8.5mm; The height of described low thread is 5.5 ~ 6.5mm;
Heat treatment: by bolt at 800 DEG C ± 10 DEG C, quench with quenching oil, then the bolt after quenching is carried out double tempering,
Then carry out Carburization Treatment, carburizer sent in tempering furnace, Carburization Treatment 50 ~ 120min in 1100 ° of-1150 DEG C of temperature ranges,
Finally clean, air-dry, get product bolt.
In a preferred embodiment of the invention, the temperature of a described tempering is 500 ± 3 DEG C, and tempering time is 230 ~ 245 minutes; The temperature of described double tempering is 600 ± 3 DEG C, and tempering time is 180 ± 5 minutes.
By technique scheme, the invention has the beneficial effects as follows:
The present invention is disposable rubs high screw thread, low thread twice screw thread, and processing technology is simple, and the qualified interest rate of finished product is high.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. one-shot forming many screw bolts processing technology, is characterized in that, comprises the following steps:
Cold-heading operation: by wire rod cut off, upsetting becomes screw blank piece, formed head, cross recess (or other head dummy) thread billet dia and bar long, under head fillet;
Thread rolling operation: the blank that cold-heading is good rubs screw thread; Adopt the screw thread in thread rolling machine processing lead screw, thread rolling machine is provided with height tooth screw plate, disposablely rubs high screw thread, low thread twice screw thread; The height of described high screw thread is 8.0-8.5mm; The height of described low thread is 5.5 ~ 6.5mm;
Heat treatment: by bolt at 800 DEG C ± 10 DEG C, quench with quenching oil, then the bolt after quenching is carried out double tempering,
Then carry out Carburization Treatment, carburizer sent in tempering furnace, Carburization Treatment 50 ~ 120min in 1100 ° of-1150 DEG C of temperature ranges,
Finally clean, air-dry, get product bolt.
2. one-shot forming many screw bolts processing technology according to claim 1, is characterized in that, the temperature of a described tempering is 500 ± 3 DEG C, and tempering time is 230 ~ 245 minutes; The temperature of described double tempering is 600 ± 3 DEG C, and tempering time is 180 ± 5 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541869.2A CN104625575A (en) | 2013-11-06 | 2013-11-06 | Machining technology of integrally-formed multi-thread bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541869.2A CN104625575A (en) | 2013-11-06 | 2013-11-06 | Machining technology of integrally-formed multi-thread bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104625575A true CN104625575A (en) | 2015-05-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310541869.2A Pending CN104625575A (en) | 2013-11-06 | 2013-11-06 | Machining technology of integrally-formed multi-thread bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104625575A (en) |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104924033A (en) * | 2015-06-09 | 2015-09-23 | 柳州弘天科技有限公司 | Bolt machining process |
| CN104999233A (en) * | 2015-08-12 | 2015-10-28 | 深圳亚太航空技术有限公司 | Technology for processing bolt made of Nb521 material |
| CN105436363A (en) * | 2015-11-30 | 2016-03-30 | 吴伟强 | Multifunctional transmission structure of heading machine |
| CN105861919A (en) * | 2016-06-14 | 2016-08-17 | 江苏永昊高强度螺栓有限公司 | Production process of high-strength bolt |
| CN106151208A (en) * | 2016-06-29 | 2016-11-23 | 杭州斯泰新材料技术有限公司 | A kind of chemistry bolt and manufacture method |
| CN106694767A (en) * | 2016-12-28 | 2017-05-24 | 日泰（上海）汽车标准件有限公司 | One-time forming mold and machining technique for threaded rod with multiple thread sections |
| CN106884841A (en) * | 2017-04-07 | 2017-06-23 | 江苏固德建筑机械有限公司 | A kind of round end washer cross Self Drilling Screws and its processing technology |
| CN106931019A (en) * | 2017-04-07 | 2017-07-07 | 江苏固德建筑机械有限公司 | A kind of coiled hair cross Self Drilling Screws and its processing technology |
| CN106931018A (en) * | 2017-04-07 | 2017-07-07 | 江苏固德建筑机械有限公司 | A kind of countersunk head cross Self Drilling Screws and its processing technology |
| CN107023555A (en) * | 2017-04-07 | 2017-08-08 | 江苏固德建筑机械有限公司 | A kind of hexagonal washer Self Drilling Screws and its production technology |
| CN107044473A (en) * | 2017-04-07 | 2017-08-15 | 江苏固德建筑机械有限公司 | A kind of hexagonal washer Self Drilling Screws and its processing technology |
| CN107061462A (en) * | 2017-04-07 | 2017-08-18 | 江苏固德建筑机械有限公司 | A kind of split type countersunk head cross Self Drilling Screws and its processing technology |
| CN107152443A (en) * | 2017-04-07 | 2017-09-12 | 江苏固德建筑机械有限公司 | A kind of Self Drilling Screws and its production technology |
| CN108180205A (en) * | 2018-03-06 | 2018-06-19 | 江苏固德建筑机械有限公司 | A kind of coiled hair cross STAINLESS STEEL SELF DRILLING SCREWS and its preparation process |
| CN108180206A (en) * | 2018-03-06 | 2018-06-19 | 江苏固德建筑机械有限公司 | A kind of hexagonal washer STAINLESS STEEL SELF DRILLING SCREWS and its preparation process |
| CN108223534A (en) * | 2018-03-06 | 2018-06-29 | 江苏固德建筑机械有限公司 | A kind of round end washer cross Self Drilling Screws and its preparation process |
| CN108252998A (en) * | 2018-03-06 | 2018-07-06 | 江苏固德建筑机械有限公司 | A kind of round end washer cross STAINLESS STEEL SELF DRILLING SCREWS and its preparation process |
| CN108252999A (en) * | 2018-03-06 | 2018-07-06 | 江苏固德建筑机械有限公司 | A kind of coiled hair cross Self Drilling Screws and its preparation process |
| CN108278262A (en) * | 2018-03-06 | 2018-07-13 | 江苏固德建筑机械有限公司 | A kind of novel countersunk head cross Self Drilling Screws and its preparation process |
| CN108457957A (en) * | 2018-03-06 | 2018-08-28 | 江苏固德建筑机械有限公司 | A kind of countersunk head cross STAINLESS STEEL SELF DRILLING SCREWS and its preparation process |
| CN108488182A (en) * | 2018-03-06 | 2018-09-04 | 江苏固德建筑机械有限公司 | A kind of coiled hair cross Self Drilling Screws and its preparation process improving degree of being completely embedded |
| CN108561395A (en) * | 2018-03-06 | 2018-09-21 | 江苏固德建筑机械有限公司 | A kind of novel round-head washer cross Self Drilling Screws and its preparation process |
| CN108561396A (en) * | 2018-03-06 | 2018-09-21 | 江苏固德建筑机械有限公司 | A kind of countersunk head cross Self Drilling Screws and its preparation process |
| CN110355531A (en) * | 2019-07-25 | 2019-10-22 | 王丽 | A kind of processing technology of ring-grooved rivet |
| CN112496249A (en) * | 2020-11-11 | 2021-03-16 | 嘉兴联控汽车部件有限公司 | Processing technology of high-temperature-resistant anti-loosening bolt |
| CN112792519A (en) * | 2021-04-08 | 2021-05-14 | 北京铁科首钢轨道技术股份有限公司 | Cold forming automatic production system and production method for anchor bolt or T-shaped bolt |
| CN113441905A (en) * | 2020-03-26 | 2021-09-28 | 彭灵敏 | Method for processing pedal shaft core |
-
2013
- 2013-11-06 CN CN201310541869.2A patent/CN104625575A/en active Pending
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104924033A (en) * | 2015-06-09 | 2015-09-23 | 柳州弘天科技有限公司 | Bolt machining process |
| CN104999233A (en) * | 2015-08-12 | 2015-10-28 | 深圳亚太航空技术有限公司 | Technology for processing bolt made of Nb521 material |
| CN105436363A (en) * | 2015-11-30 | 2016-03-30 | 吴伟强 | Multifunctional transmission structure of heading machine |
| CN105861919A (en) * | 2016-06-14 | 2016-08-17 | 江苏永昊高强度螺栓有限公司 | Production process of high-strength bolt |
| CN106151208A (en) * | 2016-06-29 | 2016-11-23 | 杭州斯泰新材料技术有限公司 | A kind of chemistry bolt and manufacture method |
| CN106694767A (en) * | 2016-12-28 | 2017-05-24 | 日泰（上海）汽车标准件有限公司 | One-time forming mold and machining technique for threaded rod with multiple thread sections |
| CN106884841A (en) * | 2017-04-07 | 2017-06-23 | 江苏固德建筑机械有限公司 | A kind of round end washer cross Self Drilling Screws and its processing technology |
| CN106931019A (en) * | 2017-04-07 | 2017-07-07 | 江苏固德建筑机械有限公司 | A kind of coiled hair cross Self Drilling Screws and its processing technology |
| CN106931018A (en) * | 2017-04-07 | 2017-07-07 | 江苏固德建筑机械有限公司 | A kind of countersunk head cross Self Drilling Screws and its processing technology |
| CN107023555A (en) * | 2017-04-07 | 2017-08-08 | 江苏固德建筑机械有限公司 | A kind of hexagonal washer Self Drilling Screws and its production technology |
| CN107044473A (en) * | 2017-04-07 | 2017-08-15 | 江苏固德建筑机械有限公司 | A kind of hexagonal washer Self Drilling Screws and its processing technology |
| CN107061462A (en) * | 2017-04-07 | 2017-08-18 | 江苏固德建筑机械有限公司 | A kind of split type countersunk head cross Self Drilling Screws and its processing technology |
| CN107152443A (en) * | 2017-04-07 | 2017-09-12 | 江苏固德建筑机械有限公司 | A kind of Self Drilling Screws and its production technology |
| CN108180206A (en) * | 2018-03-06 | 2018-06-19 | 江苏固德建筑机械有限公司 | A kind of hexagonal washer STAINLESS STEEL SELF DRILLING SCREWS and its preparation process |
| CN108488182A (en) * | 2018-03-06 | 2018-09-04 | 江苏固德建筑机械有限公司 | A kind of coiled hair cross Self Drilling Screws and its preparation process improving degree of being completely embedded |
| CN108223534A (en) * | 2018-03-06 | 2018-06-29 | 江苏固德建筑机械有限公司 | A kind of round end washer cross Self Drilling Screws and its preparation process |
| CN108252998A (en) * | 2018-03-06 | 2018-07-06 | 江苏固德建筑机械有限公司 | A kind of round end washer cross STAINLESS STEEL SELF DRILLING SCREWS and its preparation process |
| CN108252999A (en) * | 2018-03-06 | 2018-07-06 | 江苏固德建筑机械有限公司 | A kind of coiled hair cross Self Drilling Screws and its preparation process |
| CN108278262A (en) * | 2018-03-06 | 2018-07-13 | 江苏固德建筑机械有限公司 | A kind of novel countersunk head cross Self Drilling Screws and its preparation process |
| CN108457957A (en) * | 2018-03-06 | 2018-08-28 | 江苏固德建筑机械有限公司 | A kind of countersunk head cross STAINLESS STEEL SELF DRILLING SCREWS and its preparation process |
| CN108180205A (en) * | 2018-03-06 | 2018-06-19 | 江苏固德建筑机械有限公司 | A kind of coiled hair cross STAINLESS STEEL SELF DRILLING SCREWS and its preparation process |
| CN108561395A (en) * | 2018-03-06 | 2018-09-21 | 江苏固德建筑机械有限公司 | A kind of novel round-head washer cross Self Drilling Screws and its preparation process |
| CN108561396A (en) * | 2018-03-06 | 2018-09-21 | 江苏固德建筑机械有限公司 | A kind of countersunk head cross Self Drilling Screws and its preparation process |
| CN110355531A (en) * | 2019-07-25 | 2019-10-22 | 王丽 | A kind of processing technology of ring-grooved rivet |
| CN110355531B (en) * | 2019-07-25 | 2020-11-10 | 王丽 | Processing technology of ring groove rivet |
| CN113441905A (en) * | 2020-03-26 | 2021-09-28 | 彭灵敏 | Method for processing pedal shaft core |
| CN112496249A (en) * | 2020-11-11 | 2021-03-16 | 嘉兴联控汽车部件有限公司 | Processing technology of high-temperature-resistant anti-loosening bolt |
| CN112792519A (en) * | 2021-04-08 | 2021-05-14 | 北京铁科首钢轨道技术股份有限公司 | Cold forming automatic production system and production method for anchor bolt or T-shaped bolt |
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