CN101591726A - Medium carbon steel rod iron cold drawing method - Google Patents
Medium carbon steel rod iron cold drawing method Download PDFInfo
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- CN101591726A CN101591726A CNA2009100324809A CN200910032480A CN101591726A CN 101591726 A CN101591726 A CN 101591726A CN A2009100324809 A CNA2009100324809 A CN A2009100324809A CN 200910032480 A CN200910032480 A CN 200910032480A CN 101591726 A CN101591726 A CN 101591726A
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Abstract
The present invention relates to a kind of medium carbon steel rod iron cold drawing method.Specifically, be to be used for medium carbon steel rod iron base is processed into the cold drawing method of required specification.It is to be equal to or greater than 30% medium carbon steel rod iron base with total deformation rate to make through step such as the first road drawing, stress relief annealing processings for the first time, the second road drawing, the stress relief annealing processing second time, straightening processing and non-destructive test(ing)(NDT) successively.Adopt this method, can save material, cut down the consumption of energy.
Description
Technical field
The present invention relates to a kind of steel working method.Specifically, be to be used for medium carbon steel rod iron base is processed into the cold drawing method of required specification.
Background technology
Know all that in the steel processing industry cylinder piston rod, the heavy construction mechanical component such as coupling device of reinforcing bar all require to have comprehensive mechanical performance preferably.For making these mechanical component have comprehensive mechanical performance preferably, traditional method be with the medium carbon steel rod as mother metal, carry out roughing earlier, carry out modified thermal treatment again and promptly quench and add middle high tempering, make it reach tempering sorbite tissue and make.Though the mechanical component that adopt traditional method to process also have comprehensive mechanical performance preferably, have following problem: the one, need roughing, if process the part of Φ 45, just need to use the mother metal of Φ 48, waste of material is serious; The 2nd, need to adopt to quench to add the modified thermal treatment of middle high tempering, as processing the part of Φ 45, power consumption is more than 1000 degree, and energy consumption is bigger.
Summary of the invention
The problem to be solved in the present invention provides a kind of medium carbon steel rod iron cold drawing method.Adopt this method, can save material, cut down the consumption of energy.
For addressing the above problem, take following technical scheme:
The characteristics of medium carbon steel rod iron cold drawing method of the present invention are to may further comprise the steps successively:
Choose total deformation rate earlier and be equal to or greater than 30% medium carbon steel rod iron base, stand-by.
Then, carry out the first road drawing.Finish 60% of total drawing amount.
Afterwards, carry out the stress relief annealing processing first time.To put into temperature through the medium carbon steel rod iron base of the first road drawing is after 500 ℃～520 ℃ bell-type electric furnace constant temperature keeps 5～7 hours, allow it naturally cool to 440 ℃～460 ℃ with stove after, take out and go forward side by side line space air cooling but.
Afterwards, carry out the second road drawing.To carry out drawing through the medium carbon steel rod iron base that plays the stress annealing processing for the first time, and finish 40% of total drawing amount.
Afterwards, carry out the stress relief annealing processing second time.To put into temperature through the medium carbon steel rod iron base of the second road drawing is after 500 ℃～520 ℃ bell-type electric furnace constant temperature keeps 5～7 hours, allow it naturally cool to 440 ℃～460 ℃ with stove after, take out and go forward side by side line space air cooling but, obtain work in-process medium carbon steel rod iron.
Afterwards, carry out straightening processing.With straightener work in-process medium carbon steel rod iron is carried out straightening processing, making its linearity is 1.0～1.5mm/M.
At last, carry out non-destructive test(ing)(NDT).With eddy current flaw detec or ultrasonic fault detector the work in-process medium carbon steel rod iron through straightening processing is carried out non-destructive test(ing)(NDT), make defectives such as work in-process medium carbon steel rod iron flawless, obtain finished product medium carbon steel rod iron.
Take such scheme, have the following advantages:
By such scheme as can be seen, the present invention just can process the machine steel rod with better comprehensive mechanical performance by twice cold drawing, twice annealing and aligning and flaw detection.Compare with traditional method, do not need roughing and adopt to quench to add the modified thermal treatment of middle high tempering.Do not need roughing, can avoid waste of material.Add the modified thermal treatment of middle high tempering and need not quench, can save the energy, avoid the waste of the energy.
Embodiment
Embodiment one
Choose the medium carbon steel rod iron base that total deformation rate equals 30% earlier, stand-by.
Then, carry out the first road drawing.Adopt chain drawbench that total deformation rate is carried out drawing and finishes 60% of total drawing amount greater than 30% medium carbon steel rod iron base.
Carry out the stress relief annealing processing first time afterwards.To put into temperature through the medium carbon steel rod iron base of the first road drawing is after 500 ℃ bell-type electric furnace constant temperature keeps 5 hours, allow it naturally cool to 440 ℃ with stove after, take out and carry out air cooling.
Afterwards, carry out the second road drawing.Adopt chain drawbench that the medium carbon steel rod iron base through stress relief annealing processing is for the first time carried out drawing, and finish 40% of total drawing amount.
Afterwards, carry out the stress relief annealing processing second time.To put into temperature through the medium carbon steel rod iron base of the second road drawing is after 500 ℃ bell-type electric furnace constant temperature keeps 5 hours, allow it naturally cool to 440 ℃ with stove after, take out and carry out air cooling, obtain work in-process medium carbon steel rod iron.
Afterwards, carry out straightening processing.With straightener work in-process medium carbon steel rod iron is carried out straightening processing, making its linearity is 1.0mm/M.
At last, carry out non-destructive test(ing)(NDT).With eddy current flaw detec the work in-process medium carbon steel rod iron through straightening processing is carried out non-destructive test(ing)(NDT), make defectives such as work in-process medium carbon steel rod iron flawless, obtain finished product medium carbon steel rod iron.
Embodiment two
Choose total deformation rate earlier greater than 30% medium carbon steel rod iron base, stand-by.
Then, carry out the first road drawing.Adopt chain drawbench that total deformation rate is carried out drawing and finishes 60% of total drawing amount greater than 30% medium carbon steel rod iron base.
Carry out the stress relief annealing processing first time afterwards.To put into temperature through the medium carbon steel rod iron base of the first road drawing is after 510 ℃ bell-type electric furnace constant temperature keeps 6 hours, allow it naturally cool to 450 ℃ with stove after, take out and carry out air cooling.
Afterwards, carry out the second road drawing.Adopt chain drawbench that the medium carbon steel rod iron base through stress relief annealing processing is for the first time carried out drawing, and finish 40% of total drawing amount.
Afterwards, carry out the stress relief annealing processing second time.To put into temperature through the medium carbon steel rod iron base of the second road drawing is after 510 ℃ bell-type electric furnace constant temperature keeps 6 hours, allow it naturally cool to 450 ℃ with stove after, take out and carry out air cooling, obtain work in-process medium carbon steel rod iron.
Afterwards, carry out straightening processing.With straightener work in-process medium carbon steel rod iron is carried out straightening processing, making its linearity is 1.25mm/M.
At last, carry out non-destructive test(ing)(NDT).With eddy current flaw detec the work in-process medium carbon steel rod iron through straightening processing is carried out non-destructive test(ing)(NDT), make defectives such as work in-process medium carbon steel rod iron flawless, obtain finished product medium carbon steel rod iron.
Embodiment three
Choose total deformation rate earlier greater than 30% medium carbon steel rod iron base, stand-by.
Then, carry out the first road drawing.Adopt chain drawbench that total deformation rate is carried out drawing and finishes 60% of total drawing amount greater than 30% medium carbon steel rod iron base.
Carry out the stress relief annealing processing first time afterwards.To put into temperature through the medium carbon steel rod iron base of the first road drawing is after 520 ℃ bell-type electric furnace constant temperature keeps 7 hours, allow it naturally cool to 460 ℃ with stove after, take out and carry out air cooling.
Afterwards, carry out the second road drawing.Adopt chain drawbench that the medium carbon steel rod iron base through stress relief annealing processing is for the first time carried out drawing, and finish 40% of total drawing amount.
Afterwards, carry out the stress relief annealing processing second time.To put into temperature through the medium carbon steel rod iron base of the second road drawing is after 520 ℃ bell-type electric furnace constant temperature keeps 7 hours, allow it naturally cool to 460 ℃ with stove after, take out and carry out air cooling, obtain work in-process medium carbon steel rod iron.
Afterwards, carry out straightening processing.With straightener work in-process medium carbon steel rod iron is carried out straightening processing, making its linearity is 1.5mm/M.
At last, carry out non-destructive test(ing)(NDT).With eddy current flaw detec the work in-process medium carbon steel rod iron through straightening processing is carried out non-destructive test(ing)(NDT), make defectives such as work in-process medium carbon steel rod iron flawless, obtain finished product medium carbon steel rod iron.
Claims (1)
1. medium carbon steel rod iron cold drawing method is characterized in that may further comprise the steps successively:
Choose total deformation rate earlier and be equal to or greater than 30% medium carbon steel rod iron base, stand-by; Then
Carry out the first road drawing, finish 60% of total drawing amount; Afterwards
Carry out the stress relief annealing processing first time; To put into temperature through the medium carbon steel rod iron base of the first road drawing is after 500 ℃～520 ℃ bell-type electric furnace constant temperature keeps 5～7 hours, allow it naturally cool to 440 ℃～460 ℃ with stove after, take out and go forward side by side line space air cooling but; Afterwards
Carry out the second road drawing; To carry out drawing through the medium carbon steel rod iron base that plays the stress annealing processing for the first time, and finish 40% of total drawing amount; Afterwards
Carry out the stress relief annealing processing second time; To put into temperature through the medium carbon steel rod iron base of the second road drawing is after 500 ℃～520 ℃ bell-type electric furnace constant temperature keeps 5～7 hours, allow it naturally cool to 440 ℃～460 ℃ with stove after, take out and go forward side by side line space air cooling but, obtain work in-process medium carbon steel rod iron; Afterwards
Carry out straightening processing; With straightener work in-process medium carbon steel rod iron is carried out straightening processing, making its linearity is 1.0～1.5mm/M; At last
Carry out non-destructive test(ing)(NDT); With eddy current flaw detec or ultrasonic fault detector the work in-process medium carbon steel rod iron through straightening processing is carried out non-destructive test(ing)(NDT), make defectives such as work in-process medium carbon steel rod iron flawless, obtain finished product medium carbon steel rod iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100324809A CN101591726B (en) | 2009-06-17 | 2009-06-17 | Cold drawing method for medium-carbon steel bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100324809A CN101591726B (en) | 2009-06-17 | 2009-06-17 | Cold drawing method for medium-carbon steel bar |
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| Publication Number | Publication Date |
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| CN101591726A true CN101591726A (en) | 2009-12-02 |
| CN101591726B CN101591726B (en) | 2011-01-19 |
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| CN2009100324809A Active CN101591726B (en) | 2009-06-17 | 2009-06-17 | Cold drawing method for medium-carbon steel bar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233364A (en) * | 2010-04-21 | 2011-11-09 | 宝山钢铁股份有限公司 | Martensite air valve steel bar production method |
| CN107442723A (en) * | 2017-06-21 | 2017-12-08 | 安徽金越轴承有限公司 | A kind of cold drawn forming method of bearing steel bushing |
-
2009
- 2009-06-17 CN CN2009100324809A patent/CN101591726B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233364A (en) * | 2010-04-21 | 2011-11-09 | 宝山钢铁股份有限公司 | Martensite air valve steel bar production method |
| CN102233364B (en) * | 2010-04-21 | 2013-09-04 | 宝山钢铁股份有限公司 | Martensite air valve steel bar production method |
| CN107442723A (en) * | 2017-06-21 | 2017-12-08 | 安徽金越轴承有限公司 | A kind of cold drawn forming method of bearing steel bushing |
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| Publication number | Publication date |
|---|---|
| CN101591726B (en) | 2011-01-19 |
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Denomination of invention: Cold drawing method for medium-carbon steel bar Effective date of registration: 20190912 Granted publication date: 20110119 Pledgee: Bank of Jiangsu Wuxi branch, Limited by Share Ltd, Huishan Pledgor: Wuxi Tianchen Cold-drawing Steel Co., Ltd. Registration number: Y2019990000231 |
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