CN106112413A - The preparation technology of bolt - Google Patents
The preparation technology of bolt Download PDFInfo
- Publication number
- CN106112413A CN106112413A CN201610718467.9A CN201610718467A CN106112413A CN 106112413 A CN106112413 A CN 106112413A CN 201610718467 A CN201610718467 A CN 201610718467A CN 106112413 A CN106112413 A CN 106112413A
- Authority
- CN
- China
- Prior art keywords
- bolt
- bar material
- temperature
- furnace
- preheating
- 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
- 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
Abstract
The invention discloses the preparation technology of bolt, it is characterised in that include following step: 1) casting bar material；2) the bar material after casting does pickling processes；3) according to the line footpath requirement of bolt, to bar material, it takes out line, so that described bar material is retracted to the line footpath needed for bolt；4) cold-forging forming: the shaping of bolt head uses cold-heading plastic working；5) screw thread process: bolt thread processing uses cold working, makes the threaded blank in the range of certain diameter by thread rolling plate, filament plate pressure makes screw forming；6) surface processes.The production efficiency of bolt of the present invention is greatly improved, and the scrappage of bolt is significantly reduced, and the surface strength of bolt is also greatly improved.
Description
Technical field
The present invention relates to fastener areas, more specifically, relate to the preparation technology of bolt.
Background technology
Bolt, be can't do without when neutralizing in the middle of commercial production manufacture at daily life, and 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, machine
Electromechanical product.Boats and ships, vehicle, hydraulic engineering, even chemical experiment are also used bolt.Anyway it is that super many places are the most useful
Arrive bolt.The special precision bolt used above such as digital product.DVD, it is miniature that photographing unit, glasses, clock and watch, electronics etc. use
Bolt;The general bolt of TV, electric product, musical instrument, furniture etc.;Large-sized bolt, spiral shell is then used as engineering, building, bridge
Cap;Traffic tool, aircraft, electric car, automobile etc. then sized by bolt using.Vital task industrially born by bolt, a strategic point
There is industry on ball, then the function of bolt is the most important.
In prior art generally there is bolt production efficiency lowly in the preparation technology of bolt, the defect that defect rate is high.
Summary of the invention
For the deficiencies in the prior art, the invention provides the preparation technology of bolt.
The present invention is achieved through the following technical solutions: the preparation technology of bolt, it is characterised in that includes following
Step:
1) casting bar material；
2) the bar material after casting does pickling processes；
3) according to the line footpath requirement of bolt, to bar material, it takes out line, so that described bar material is retracted to the line footpath needed for bolt；
4) cold-forging forming: the shaping of bolt head uses cold-heading plastic working；
5) screw thread process: bolt thread processing uses cold working, makes the threaded blank in the range of certain diameter pass through thread rolling plate,
Screw forming is made by filament plate pressure；
6) surface processes: bolt a) is put into preheating furnace and preheats 4 ~ 6 hours, preheating furnace furnace temperature 500-750 DEG C；B) by step a
Bolt be placed in the salt bath furnace of 700-720 DEG C insulation within 3 ~ 5 hours, quench；C) by the bolt in step b in temperature it is
It is tempered under conditions of 190-220 DEG C, then insulation 30-50 minute；D) little at the tempering furnace inside holding 10 ~ 12 of 350 ~ 400 DEG C again
Time after, air cooling is to room temperature；E) bolt in step d is carried out surface granosealing.
In technique scheme, in described step 6), preheating time is 5 hours, and preheating temperature is 600 DEG C.
In technique scheme, the salt bath furnace of described step 6) salt temperature be 710 DEG C, temperature retention time is 4 hours.
There is advantages that the production efficiency of bolt of the present invention is greatly improved, and the scrappage of bolt
Being significantly reduced, the surface strength of bolt is also greatly improved.
Detailed description of the invention
Below the present invention is described in further detail: the preparation technology of bolt, it is characterised in that include following step
Rapid:
1) casting bar material；
2) the bar material after casting does pickling processes；
3) according to the line footpath requirement of bolt, to bar material, it takes out line, so that described bar material is retracted to the line footpath needed for bolt；
4) cold-forging forming: the shaping of bolt head uses cold-heading plastic working；
5) screw thread process: bolt thread processing uses cold working, makes the threaded blank in the range of certain diameter pass through thread rolling plate,
Screw forming is made by filament plate pressure；
6) surface processes: bolt a) is put into preheating furnace and preheats 4 ~ 6 hours, preheating furnace furnace temperature 500-750 DEG C；B) by step a
Bolt be placed in the salt bath furnace of 700-720 DEG C insulation within 3 ~ 5 hours, quench；C) by the bolt in step b in temperature it is
It is tempered under conditions of 190-220 DEG C, then insulation 30-50 minute；D) little at the tempering furnace inside holding 10 ~ 12 of 350 ~ 400 DEG C again
Time after, air cooling is to room temperature；E) bolt in step d is carried out surface granosealing.
In described step 6), preheating time is 5 hours, and preheating temperature is 600 DEG C.
The salt bath furnace of described step 6) salt temperature be 710 DEG C, temperature retention time is 4 hours.
Claims (3)
1. the preparation technology of bolt, it is characterised in that include following step:
1) casting bar material；
2) the bar material after casting does pickling processes；
3) according to the line footpath requirement of bolt, to bar material, it takes out line, so that described bar material is retracted to the line footpath needed for bolt；
4) cold-forging forming: the shaping of bolt head uses cold-heading plastic working；
5) screw thread process: bolt thread processing uses cold working, makes the threaded blank in the range of certain diameter pass through thread rolling plate,
Screw forming is made by filament plate pressure；
6) surface processes: bolt a) is put into preheating furnace and preheats 4 ~ 6 hours, preheating furnace furnace temperature 500-750 DEG C；B) by step a
Bolt be placed in the salt bath furnace of 700-720 DEG C insulation within 3 ~ 5 hours, quench；C) by the bolt in step b in temperature it is
It is tempered under conditions of 190-220 DEG C, then insulation 30-50 minute；D) little at the tempering furnace inside holding 10 ~ 12 of 350 ~ 400 DEG C again
Time after, air cooling is to room temperature；E) bolt in step d is carried out surface granosealing.
Bolt Technology for Heating Processing the most according to claim 1, it is characterised in that in described step 6), preheating time is 5 little
Time, preheating temperature is 600 DEG C.
Bolt Technology for Heating Processing the most according to claim 1, it is characterised in that: the salt bath furnace of described step 6) salt bath
Temperature is 710 DEG C, and temperature retention time is 4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718467.9A CN106112413A (en) | 2016-08-25 | 2016-08-25 | The preparation technology of bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718467.9A CN106112413A (en) | 2016-08-25 | 2016-08-25 | The preparation technology of bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106112413A true CN106112413A (en) | 2016-11-16 |
Family
ID=57275041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610718467.9A Pending CN106112413A (en) | 2016-08-25 | 2016-08-25 | The preparation technology of bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106112413A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108544186A (en) * | 2018-03-28 | 2018-09-18 | 徐州东鑫铸造有限公司 | A kind of screw production technology |
-
2016
- 2016-08-25 CN CN201610718467.9A patent/CN106112413A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108544186A (en) * | 2018-03-28 | 2018-09-18 | 徐州东鑫铸造有限公司 | A kind of screw production technology |
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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: 20161116 |