CN104611523A - Quenching and tempering method of Cr8 type cold roll steel - Google Patents
Quenching and tempering method of Cr8 type cold roll steel Download PDFInfo
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- CN104611523A CN104611523A CN201310536217.XA CN201310536217A CN104611523A CN 104611523 A CN104611523 A CN 104611523A CN 201310536217 A CN201310536217 A CN 201310536217A CN 104611523 A CN104611523 A CN 104611523A
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Abstract
The invention discloses a quenching and tempering method of Cr8 type cold roll steel. According to the quenching and tempering method, annealed Cr8 steel is taken as a raw material, quenching temperature is 1025 DEG C, and tempering temperature is 525 DEG C. The quenching and tempering method is capable of avoiding scrapping of working rolls caused by cracks, roll banding, and even peeling in cold rolling processes of rolls, wherein cracks, roll banding, and peeling are induced by mechanical shock and thermal shock; and obtaining cold rolls with high surface hardness, and excellent wear resistance, roughness preserving ability, fatigue resistance, and accident resistance.
Description
Technical field
The invention belongs to casting technology field, be specifically related to a kind of Cr8 type cold roll steel Q-tempering technique.
Background technology
Roll is one of main consumable part in iron and steel Rolling Production, and roll consumption cost accounts for the 5%-15% of Rolling production cost.If factors such as the production shutdown that consideration brings because roll consume, the underproduction and maintenance of the equipment, then the ratio regular meeting of production cost shared by it is higher.The quality of roll is not only related to Rolling production cost and milling train production operational availability, also the quality of influence of rolled product to a certain extent.Roll, in cold-rolled process, is often subject to mechanical shock and thermal shocking, working roll is cracked, roll banding even peels off and scrap.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, a kind of Cr8 type cold roll steel Q-tempering technique is provided, can produce and there is high surface hardness, excellent wear resistance and roughness retaining capability, the cold roll of the anti-fatigue performance that simultaneously will have and anti-accident performance.
Cr8 type cold roll steel Q-tempering technique provided by the invention, comprises the following steps:
(1) sample that quenches adopts annealed state Cr8 steel, and specimen size is Φ 21 × 10mm, and quenching temperature is 1000 DEG C ~ 1030 DEG C, and soaking time is 1h, oil quenching;
(2) carry out temper to the sample in the step (1) after quenching, tempering temperature is respectively 510 DEG C ~ 530 DEG C, insulation 1h, air cooling.
Cr8 steel is a kind of high-carbon high-alloy steel, its chemical composition following (wt%): C-1.06, Cr-7.68, V-2.15, Mo-1.52, Si-0.91, W-0.94, Nb-0.52, Mn-0.39, Ni-0.16, Cu-0.09, Fe-surplus.
Cr8 type cold roll steel Q-tempering technique provided by the invention, its beneficial effect is, overcomes existing roll in cold-rolled process, is often subject to mechanical shock and thermal shocking, makes the drawback that working roll cracks, roll banding even peels off and scraps.Can produce and there is high surface hardness, excellent wear resistance and roughness retaining capability, the cold roll of the anti-fatigue performance that simultaneously will have and anti-accident performance.
Embodiment
Below in conjunction with an embodiment, Cr8 type cold roll steel Q-tempering technique provided by the invention is described in detail.
Embodiment
The Cr8 type cold roll steel Q-tempering technique of the present embodiment, comprises the following steps:
(1) sample that quenches adopts annealed state Cr8 steel, and specimen size is Φ 21 × 10mm, and quenching temperature is 1025 DEG C, and soaking time is 1h, oil quenching;
(2) carry out temper to the sample in the step (1) after quenching, tempering temperature is respectively 525 DEG C, insulation 1h, air cooling.
Cr8 steel is a kind of high-carbon high-alloy steel, its chemical composition following (wt%): C-1.06, Cr-7.68, V-2.15, Mo-1.52, Si-0.91, W-0.94, Nb-0.52, Mn-0.39, Ni-0.16, Cu-0.09, Fe-surplus.
Claims (1)
1. a Cr8 type cold roll steel Q-tempering technique, is characterized in that: comprise the following steps:
Quenching sample adopts annealed state Cr8 steel, and specimen size is Φ 21 × 10mm, and quenching temperature is 1000 DEG C ~ 1030 DEG C, and soaking time is 1h, oil quenching;
Carry out temper to the sample in the step (1) after quenching, tempering temperature is respectively 510 DEG C ~ 530 DEG C, insulation 1h, air cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310536217.XA CN104611523A (en) | 2013-11-04 | 2013-11-04 | Quenching and tempering method of Cr8 type cold roll steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310536217.XA CN104611523A (en) | 2013-11-04 | 2013-11-04 | Quenching and tempering method of Cr8 type cold roll steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104611523A true CN104611523A (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310536217.XA Pending CN104611523A (en) | 2013-11-04 | 2013-11-04 | Quenching and tempering method of Cr8 type cold roll steel |
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| CN (1) | CN104611523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410673A (en) * | 2020-11-18 | 2021-02-26 | 宝钢轧辊科技有限责任公司 | High-speed steel roll for rolling ultrahigh-strength steel plate and manufacturing method thereof |
-
2013
- 2013-11-04 CN CN201310536217.XA patent/CN104611523A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410673A (en) * | 2020-11-18 | 2021-02-26 | 宝钢轧辊科技有限责任公司 | High-speed steel roll for rolling ultrahigh-strength steel plate and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150513 |
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| WD01 | Invention patent application deemed withdrawn after publication |