CN109420794A - Control method for shearing high-strength steel edge crack by combined machine set circle shear - Google Patents
Control method for shearing high-strength steel edge crack by combined machine set circle shear Download PDFInfo
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- CN109420794A CN109420794A CN201710742632.9A CN201710742632A CN109420794A CN 109420794 A CN109420794 A CN 109420794A CN 201710742632 A CN201710742632 A CN 201710742632A CN 109420794 A CN109420794 A CN 109420794A
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- shearing
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- strength steel
- shear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/006—Accessories for shearing machines or shearing devices for obtaining pieces of a predetermined length, e.g. control arrangements
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- Mechanical Engineering (AREA)
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Abstract
本发明涉及一种联合机组圆盘剪剪切高强钢边部裂口的控制方法，1)带钢剪边前按标准值标定圆盘剪的剪刃间隙和搭接量；2)将标定后的剪刃的间隙放大0.2‑0.3mm后进行带钢引头，带钢引头后再调回原间隙；3)优化剪切参数；4)利用纠偏微调带钢使带钢处于正中间位置，使两边剪切宽度一致；5)剪后断面剪断与淬断比为1：4‑5；6)剪切速度稳定在160‑170m/min；7)剪切超过20公里后，剪刃间隙再放大0.3‑0.35mm。本发明的控制方法提高轧制边的边部质量，现有冷轧产品生产工艺流程上不用增加、改造设备，使高强钢的剪边稳定生产。The invention relates to a method for controlling edge cracks of high-strength steel sheared by a disc shear of a combined unit. After the gap of the shearing edge is enlarged by 0.2-0.3mm, the strip lead is carried out, and then the strip lead is adjusted back to the original gap; 3) Optimize the shear parameters; The shear width on both sides is the same; 5) The shearing and quenching ratio of the section after shearing is 1:4-5; 6) The shearing speed is stable at 160-170m/min; 7) After the shearing exceeds 20 kilometers, the gap between the cutting edges will be enlarged again 0.3‑0.35mm. The control method of the invention improves the edge quality of the rolled edge, and the existing cold-rolled product production process does not need to increase or reform equipment, so that the high-strength steel trimming can be produced stably.
Description
Technical field
The present invention relates to cold rolling of strip steel shearing process, in particular to a kind of Unit erriger circle shear shearing high-strength steel edge is split
The control method of mouth.
Background technique
Tandem rolling line is in the steel grades such as circle shear shearing Q235, DP, TRIP, steel strip thickness 3.0-4.0mm, width 730-
When 1300mm, outgoing gauge 0.8mm-1.2mm, leads to roll rear quality of edges because the characteristic of steel is hard and crisp breach usually occur existing
As, it is difficult to steady production.So guaranteeing the steady production of unit for a kind of control method of this case study, edge matter is improved
Amount, possesses more market shares, enhances the competitiveness.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of Unit erriger circle shear shearing high-strength steel edge breaches
Control method improves the quality of edges of rolled edge.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of control method of Unit erriger circle shear shearing high-strength steel edge breach, is completed according to the following steps:
1) blade clearance before strip cutting edge by standard value calibration circle shear and amount of lap；
2) strip leader is carried out after 0.2-0.3mm being amplified in the gap of calibrated cutting edge, recalls to original again after strip leader
Gap；The cutting edge that ensures not colliding with when strip leader causes to hurt sword；
3) optimizing shear parameter is as follows:
Raw thickness is 4.0mm, and when outgoing gauge is 1.2mm, blade clearance is 0.93 ± 0.05mm, amount of lap 0.81
±0.05mm；
Raw thickness is 3.5mm, and when outgoing gauge is 0.9mm, blade clearance is 0.72 ± 0.05mm, amount of lap 0.70
±0.05mm；
Raw thickness is 3.0mm, and when outgoing gauge is 0.8mm, blade clearance is 0.67 ± 0.05mm, amount of lap 0.67
±0.05mm；
4) so that strip is in middle position using correction fine tuning strip, keep both sides shearing width consistent；Can to avoid by
It causes edge shearing force inconsistent in uneven thickness and influences shearing quality；
5) cutting rear section and cutting with disconnected ratio of quenching is 1:4-5；
6) shear velocity is stablized in 160-170m/min；
7) after shearing is more than 20 kilometers, 0.3-0.35mm is amplified in blade clearance again.
The high-strength steel yield strength is 1370MPa or more, and tensile strength is 1620MPa or more.
Compared with prior art, the beneficial effects of the present invention are:
Control method of the invention improves the quality of edges of rolled edge, does not have to increase in the existing cold-rolled products technological process of production
Add, reforming equipment, makes the cutting edge steady production of high-strength steel.
Specific embodiment
Below with reference to embodiment, the present invention is further described:
The present invention will be described in detail for following embodiment.These embodiments be only to preferred embodiment of the invention into
Row description, does not limit the scope of the present invention.
Embodiment 1
A kind of control method of Unit erriger circle shear shearing high-strength steel edge breach, is completed according to the following steps:
1) blade clearance before strip cutting edge by standard value calibration circle shear and amount of lap；
2) strip leader is carried out after 0.2mm being amplified in the gap of calibrated cutting edge, recalls to former gap again after strip leader；
3) optimizing shear parameter is as follows:
Raw thickness is 4.0mm, when outgoing gauge is 1.2mm, blade clearance 0.93mm, amount of lap 0.81mm；
Raw thickness is 3.5mm, when outgoing gauge is 0.9mm, blade clearance 0.72mm, amount of lap 0.70mm；
Raw thickness is 3.0mm, when outgoing gauge is 0.8mm, blade clearance 0.67mm, amount of lap 0.67mm；
4) so that strip is in middle position using correction fine tuning strip, keep both sides shearing width consistent；
5) cutting rear section and cutting with disconnected ratio of quenching is 1:4；
6) shear velocity is stablized in 160m/min；
7) after shearing is more than 20 kilometers, 0.3mm is amplified in blade clearance again.
Embodiment 2
A kind of control method of Unit erriger circle shear shearing high-strength steel edge breach, is completed according to the following steps:
1) blade clearance before strip cutting edge by standard value calibration circle shear and amount of lap；
2) strip leader is carried out after 0.3mm being amplified in the gap of calibrated cutting edge, recalls to former gap again after strip leader；
The cutting edge that ensures not colliding with when strip leader causes to hurt sword；
3) optimizing shear parameter is as follows:
Raw thickness is 4.0mm, when outgoing gauge is 1.2mm, blade clearance 0.98mm, amount of lap 0.86mm；
Raw thickness is 3.5mm, when outgoing gauge is 0.9mm, blade clearance 0.77mm, amount of lap 0.75mm；
Raw thickness is 3.0mm, when outgoing gauge is 0.8mm, blade clearance 0.72mm, amount of lap 0.72mm；
4) so that strip is in middle position using correction fine tuning strip, keep both sides shearing width consistent；Can to avoid by
It causes edge shearing force inconsistent in uneven thickness and influences shearing quality；
5) cutting rear section and cutting with disconnected ratio of quenching is 1:4；
6) shear velocity is stablized in 165m/min；
7) after shearing is more than 20 kilometers, 0.3mm is amplified in blade clearance again.
Embodiment 3
A kind of control method of Unit erriger circle shear shearing high-strength steel edge breach, is completed according to the following steps:
1) blade clearance before strip cutting edge by standard value calibration circle shear and amount of lap；
2) strip leader is carried out after 0.2mm being amplified in the gap of calibrated cutting edge, recalls to former gap again after strip leader；
The cutting edge that ensures not colliding with when strip leader causes to hurt sword；
3) optimizing shear parameter is as follows:
Raw thickness is 4.0mm, when outgoing gauge is 1.2mm, blade clearance 0.9mm, amount of lap 0.78mm；
Raw thickness is 3.5mm, when outgoing gauge is 0.9mm, blade clearance 0.69mm, amount of lap 0.67mm；
Raw thickness is 3.0mm, when outgoing gauge is 0.8mm, blade clearance 0.64mm, amount of lap 0.64mm；
4) so that strip is in middle position using correction fine tuning strip, keep both sides shearing width consistent；Can to avoid by
It causes edge shearing force inconsistent in uneven thickness and influences shearing quality；
5) cutting rear section and cutting with disconnected ratio of quenching is 1:5；
6) shear velocity is stablized in 170m/min；
7) after shearing is more than 20 kilometers, 0.35mm is amplified in blade clearance again.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710742632.9A CN109420794A (en) | 2017-08-25 | 2017-08-25 | Control method for shearing high-strength steel edge crack by combined machine set circle shear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710742632.9A CN109420794A (en) | 2017-08-25 | 2017-08-25 | Control method for shearing high-strength steel edge crack by combined machine set circle shear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109420794A true CN109420794A (en) | 2019-03-05 |
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| CN201710742632.9A Pending CN109420794A (en) | 2017-08-25 | 2017-08-25 | Control method for shearing high-strength steel edge crack by combined machine set circle shear |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843281A (en) * | 2021-08-31 | 2021-12-28 | 天津市新天钢冷轧薄板有限公司 | Control method for improving quality of edge of hard-rolled coil |
| CN115213478A (en) * | 2022-08-26 | 2022-10-21 | 山东钢铁集团日照有限公司 | Control method for improving trimming quality of low-carbon SRZW-1B steel for cold-hardening bending |
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| US20020194871A1 (en) * | 2001-04-10 | 2002-12-26 | Simon Jonathan S. | Control for an I.S. machine |
| CN201614414U (en) * | 2009-12-31 | 2010-10-27 | 上海欧达电气成套设备工程有限公司 | Pinch roll forced centering device |
| CN102722104A (en) * | 2012-06-29 | 2012-10-10 | 宝山钢铁股份有限公司 | Method for controlling acid-washing and edge-shearing quality of high-strength steel |
| CN103357944A (en) * | 2013-07-10 | 2013-10-23 | 河北钢铁股份有限公司邯郸分公司 | IF steel hot rolled materials acid rolling trimming quality control method |
| CN105983669A (en) * | 2016-07-06 | 2016-10-05 | 武汉科技大学 | Synchronous hydraulic shear for continuous casting square billet |
| CN106552963A (en) * | 2015-09-30 | 2017-04-05 | 宝山钢铁股份有限公司 | A kind of strip steel trimming cut burr control method suitable for rewinding unit circle shear |
-
2017
- 2017-08-25 CN CN201710742632.9A patent/CN109420794A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020194871A1 (en) * | 2001-04-10 | 2002-12-26 | Simon Jonathan S. | Control for an I.S. machine |
| CN201614414U (en) * | 2009-12-31 | 2010-10-27 | 上海欧达电气成套设备工程有限公司 | Pinch roll forced centering device |
| CN102722104A (en) * | 2012-06-29 | 2012-10-10 | 宝山钢铁股份有限公司 | Method for controlling acid-washing and edge-shearing quality of high-strength steel |
| CN103357944A (en) * | 2013-07-10 | 2013-10-23 | 河北钢铁股份有限公司邯郸分公司 | IF steel hot rolled materials acid rolling trimming quality control method |
| CN106552963A (en) * | 2015-09-30 | 2017-04-05 | 宝山钢铁股份有限公司 | A kind of strip steel trimming cut burr control method suitable for rewinding unit circle shear |
| CN105983669A (en) * | 2016-07-06 | 2016-10-05 | 武汉科技大学 | Synchronous hydraulic shear for continuous casting square billet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843281A (en) * | 2021-08-31 | 2021-12-28 | 天津市新天钢冷轧薄板有限公司 | Control method for improving quality of edge of hard-rolled coil |
| CN115213478A (en) * | 2022-08-26 | 2022-10-21 | 山东钢铁集团日照有限公司 | Control method for improving trimming quality of low-carbon SRZW-1B steel for cold-hardening bending |
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