CN104259770A - Bolt machining process - Google Patents
Bolt machining process Download PDFInfo
- Publication number
- CN104259770A CN104259770A CN201410416867.5A CN201410416867A CN104259770A CN 104259770 A CN104259770 A CN 104259770A CN 201410416867 A CN201410416867 A CN 201410416867A CN 104259770 A CN104259770 A CN 104259770A
- Authority
- CN
- China
- Prior art keywords
- bolt
- processing technology
- content
- blank
- upsetting
- 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
- 238000003754 machining Methods 0.000 title abstract 6
- 238000005242 forging Methods 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000009713 electroplating Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 238000005488 sandblasting Methods 0.000 claims abstract description 5
- 238000005516 engineering process Methods 0.000 claims description 18
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- 238000010792 warming Methods 0.000 claims description 8
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- 238000004381 surface treatment Methods 0.000 claims description 4
- 238000005255 carburizing Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013486 operation strategy Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering 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
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Heat Treatment Of Articles (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention discloses a bolt machining process which includes the steps of firstly, machining the head of a bolt, to be more specific, cutting a coil steel material into an appropriate length, rising temperature to 660-680 DEG C, performing first upsetting, cooling to 320-340 DEG C, performing second upsetting, and extruding to obtain the head of the bolt; secondly, machining the threaded part of the bolt, to be more specific, clamping a blank between a group of two forging dies, rotating one of the two forging dies while rotating the blank, and forming threads through plastic machining; thirdly, performing thermal treatment; fourthly, processing the surface, to be more specific, performing carburizing treatment and sand blasting on the formed bolt, and electroplating a layer of galvanized iron on the surface of the bolt. The bolt machining process has the advantages the precision and strength of the bolt are increased by twice upsetting different in upsetting temperatures and once extrusion, and the corrosion resistance of the bolt is increased by the galvanized iron electroplated on the surface of the bolt.
Description
technical field:
The present invention relates to a kind of processing technology of bolt, belong to standard component processing technique field.
background technology:
Bolt is in daily life is worked as and in the middle of industrial production manufacture, and can't do without, 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 special precision bolt used above as digital product.DVD, the Micro-bolt that 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.
The treatment process of the bolt that intensity is high adopts carburizing or cyaniding to add the techniques such as 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%.
summary of the invention:
The present invention seeks to, be used for making up the deficiencies in the prior art, and a kind of processing technology of nut of high rigidity is provided.
To achieve these goals, technical scheme of the present invention is as follows:
A processing technology for bolt, comprises following step:
(1) bolt head processing: the steel cutting of coil shape is become suitable length, is warming up to 660-680 DEG C, carry out first time Upsetting and forge, be cooled to 320-340 DEG C, carries out second time Upsetting forging, then through extruding, finally obtains bolt head;
(2) threaded portion processing: clamp between forging die blank being placed on 21 group, one side rotates a forging die in two forging dies, and one side makes blank rotate, and becomes screw thread form by plastic working;
(3) heat treatment: by bolt blank at 320-340 DEG C of insulation 50-90min, be warming up to 660-680 DEG C of insulation 60-80min, fast cooling, to 320-340 DEG C, keeps 100-120min, is heated to 660-680 DEG C, keeps 60-80min, naturally cools afterwards;
(4) surface treatment: shaping bolt is carried out Carburization Treatment, sandblasting, then at bolt electroplating surface last layer zinc-iron.
The processing technology of described a kind of bolt, in described steel, phosphorus content is 0.25-0.35%, manganese content 0.15-0.25%, and copper content is 0.25-0.35%, and silicon content is less than 0.3%, and phosphorus content 0.03%, sulfur content is less than 0.035%.
The processing technology of described a kind of bolt, described Carburization Treatment is carried out under temperature is 700-750 DEG C of condition.
According to the bolt that the processing technology of described a kind of bolt obtains.
Beneficial effect of the present invention is as follows:
Bolt processing technic featuring of the present invention, is forged by twice Upsetting and is once extruded, and the temperature of twice Upsetting forging is different, improves precision and the intensity of bolt, by electroplating surface one deck zinc-iron, improves the corrosion resistance of bolt.
detailed description of the invention:
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Embodiment 1:
In the present embodiment, a kind of processing technology of bolt, comprises following step:
(1) bolt head processing: the steel cutting of coil shape is become suitable length, is warming up to 680 DEG C, carry out first time Upsetting and forge, be cooled to 340 DEG C, carries out second time Upsetting forging, then through extruding, finally obtains bolt head;
(2) threaded portion processing: clamp between forging die blank being placed on 21 group, one side rotates a forging die in two forging dies, and one side makes blank rotate, and becomes screw thread form by plastic working;
(3) heat treatment: by bolt blank at 340 DEG C of insulation 90min, be warming up to 680 DEG C of insulation 80min, fast cooling to 340 DEG C, keeps 120min, is heated to 680 DEG C, keeps 80min, naturally cools afterwards;
(4) surface treatment: shaping bolt is carried out Carburization Treatment, sandblasting, then at bolt electroplating surface last layer zinc-iron.
The processing technology of described a kind of bolt, in described steel, phosphorus content is 0.35%, manganese content 0.25%, and copper content is 0.35%, and silicon content is less than 0.3%, and phosphorus content 0.03%, sulfur content is less than 0.035%.
The processing technology of described a kind of bolt, described Carburization Treatment is carried out under temperature is 750 DEG C of conditions.
Embodiment 2:
In this enforcement, a kind of processing technology of bolt, comprises following step:
(1) bolt head processing: the steel cutting of coil shape is become suitable length, is warming up to 660-680 DEG C, carry out first time Upsetting and forge, be cooled to 320-340 DEG C, carries out second time Upsetting forging, then through extruding, finally obtains bolt head;
(2) threaded portion processing: clamp between forging die blank being placed on 21 group, one side rotates a forging die in two forging dies, and one side makes blank rotate, and becomes screw thread form by plastic working;
(3) heat treatment: by bolt blank at 320 DEG C of insulation 50min, be warming up to 660 DEG C of insulation 60-80min, fast cooling to 320 DEG C, keeps 100min, is heated to 660 DEG C, keeps 60min, naturally cools afterwards;
(4) surface treatment: shaping bolt is carried out Carburization Treatment, sandblasting, then at bolt electroplating surface last layer zinc-iron.
The processing technology of described a kind of bolt, in described steel, phosphorus content is 0.25%, manganese content 0.15%, and copper content is 0.25%, and silicon content is less than 0.3%, and phosphorus content 0.03%, sulfur content is less than 0.035%.
The processing technology of described a kind of bolt, described Carburization Treatment is carried out under temperature is 700 DEG C of conditions.
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 (4)
1. a processing technology for bolt, is characterized in that, comprises following step:
(1) bolt head processing: the steel cutting of coil shape is become suitable length, is warming up to 660-680 DEG C, carry out first time Upsetting and forge, be cooled to 320-340 DEG C, carries out second time Upsetting forging, then through extruding, finally obtains bolt head;
(2) threaded portion processing: clamp between forging die blank being placed on 21 group, one side rotates a forging die in two forging dies, and one side makes blank rotate, and becomes screw thread form by plastic working;
(3) heat treatment: by bolt blank at 320-340 DEG C of insulation 50-90min, be warming up to 660-680 DEG C of insulation 60-80min, fast cooling, to 320-340 DEG C, keeps 100-120min, is heated to 660-680 DEG C, keeps 60-80min, naturally cools afterwards;
(4) surface treatment: shaping bolt is carried out Carburization Treatment, sandblasting, then at bolt electroplating surface last layer zinc-iron.
2. the processing technology of a kind of bolt according to claim 1, is characterized in that, in described steel, phosphorus content is 0.25-0.35%, manganese content 0.15-0.25%, copper content is 0.25-0.35%, and silicon content is less than 0.3%, phosphorus content 0.03%, sulfur content is less than 0.035%.
3. the processing technology of a kind of bolt according to claim 1, is characterized in that, described Carburization Treatment is carried out under temperature is 700-750 DEG C of condition.
4. the bolt that the processing technology of a kind of bolt according to above arbitrary claim obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416867.5A CN104259770A (en) | 2014-08-22 | 2014-08-22 | Bolt machining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416867.5A CN104259770A (en) | 2014-08-22 | 2014-08-22 | Bolt machining process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104259770A true CN104259770A (en) | 2015-01-07 |
Family
ID=52151414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410416867.5A Pending CN104259770A (en) | 2014-08-22 | 2014-08-22 | Bolt machining process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104259770A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104924031A (en) * | 2015-06-05 | 2015-09-23 | 柳州金茂机械有限公司 | Stud processing process |
| CN105033571A (en) * | 2015-06-05 | 2015-11-11 | 柳州金茂机械有限公司 | Bolt machining process |
| CN107695619A (en) * | 2017-08-31 | 2018-02-16 | 浙江乾泰机车部件有限公司 | The processing method of clamping screw |
| CN108817869A (en) * | 2018-09-06 | 2018-11-16 | 杭州浩合螺栓有限公司 | A kind of production technology of torsional shear type bolt |
| CN109295485A (en) * | 2018-09-28 | 2019-02-01 | 江苏永昊高强度螺栓有限公司 | A kind of electroplating technology of high-strength bolt |
| CN109333013A (en) * | 2018-12-26 | 2019-02-15 | 温州市鸿图汽车零部件有限公司 | A kind of bolt processing method |
| 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 |
| CN113500159A (en) * | 2021-07-07 | 2021-10-15 | 安徽长江紧固件有限责任公司 | Warm-heading composite forming process for high-strength fastener |
-
2014
- 2014-08-22 CN CN201410416867.5A patent/CN104259770A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104924031A (en) * | 2015-06-05 | 2015-09-23 | 柳州金茂机械有限公司 | Stud processing process |
| CN105033571A (en) * | 2015-06-05 | 2015-11-11 | 柳州金茂机械有限公司 | Bolt machining process |
| CN107695619A (en) * | 2017-08-31 | 2018-02-16 | 浙江乾泰机车部件有限公司 | The processing method of clamping screw |
| CN108817869A (en) * | 2018-09-06 | 2018-11-16 | 杭州浩合螺栓有限公司 | A kind of production technology of torsional shear type bolt |
| CN108817869B (en) * | 2018-09-06 | 2020-04-07 | 杭州浩合螺栓有限公司 | Production process of torsional shear type bolt |
| CN109295485A (en) * | 2018-09-28 | 2019-02-01 | 江苏永昊高强度螺栓有限公司 | A kind of electroplating technology of high-strength bolt |
| CN109333013A (en) * | 2018-12-26 | 2019-02-15 | 温州市鸿图汽车零部件有限公司 | A kind of bolt processing method |
| 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 |
| CN113500159A (en) * | 2021-07-07 | 2021-10-15 | 安徽长江紧固件有限责任公司 | Warm-heading composite forming process for high-strength fastener |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |