CN101985685A - Roller tempering heat treatment process - Google Patents
Roller tempering heat treatment process Download PDFInfo
- Publication number
- CN101985685A CN101985685A CN2010105546413A CN201010554641A CN101985685A CN 101985685 A CN101985685 A CN 101985685A CN 2010105546413 A CN2010105546413 A CN 2010105546413A CN 201010554641 A CN201010554641 A CN 201010554641A CN 101985685 A CN101985685 A CN 101985685A
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- CN
- China
- Prior art keywords
- tempering
- temperature
- adopted
- roller
- roll
- Prior art date
Links
- 238000005496 tempering Methods 0.000 title claims abstract description 38
- 238000010438 heat treatment Methods 0.000 title claims abstract description 14
- 238000000034 methods Methods 0.000 title claims abstract description 9
- 238000010791 quenching Methods 0.000 claims abstract description 11
- 230000000171 quenching Effects 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000003570 air Substances 0.000 claims abstract description 8
- 230000001186 cumulative Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 2
- 241001081830 Degeneriaceae Species 0.000 abstract 5
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000011901 water Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000005516 engineering processes Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 2
- 239000000463 materials Substances 0.000 description 2
- 241001504664 Crossocheilus latius Species 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Abstract
Description
Technical field
The present invention relates to a kind ofly material be carried out the tempered thermal treatment process, a kind of roll tempering heat treatment process.
Background technology
Roll is the strength member on Steel Mill's rolling mill, and the pressure that produces when utilizing a pair of or one group of roll rolling rolls the stone roller steel.It mainly bears the sound load when rolling, wearing and tearing and influence of temperature variation.The material of working roll has 9Cr, 9Cr in the cold roll commonly used 2, 9Crv, 8CrMoV etc., cold roll requires hard surfacing, and hardness is HS45 ~ 105.Forged steel roll can be divided into Forged Steel Rolls For Hot Rolling and forging steel cold roll, and Forged Steel Rolls For Hot Rolling is mainly used in hot rolling cogging and shaped steel shaping roll, and forging steel cold roll is widely used as cold roll.Because cold rolled sheet requires quality higher, especially cold rolled sheet is widely used in industries such as light industry, automobile, building and railway, produce high-quality cold rolled sheet, must there be high-quality cold roll to do assurance, performance to cold roll proposes very high requirement like this: body surface must have height and uniform hardness, to guarantee the dimensional precision and the favorable surface quality of cold-strip or steel plate; The reasonableness of roller processing technology and accuracy are whether roll has certain depth of hardening zone; Assurance with high anti-accident ability.It also is the subject matter difficult point that exists at present.
Summary of the invention
Defective in view of prior art exists the object of the present invention is to provide a kind of roll tempering heat treatment process, makes roll yield rate height in heat treatment process, stable performance.Wherein, comprise less distortion and cracking, roll surface hardness height, uniformity of hardness is good, and the radial stiffness drop is little, guarantees the superperformance of roller core and roll neck simultaneously.
For achieving the above object, the technology used in the present invention solution is that quenching temperature is 910 ℃, with the workpiece net thickness is benchmark, every mm thick insulation 2 minutes is carried out shrend, 160 ℃ ~ 180 ℃ of the cold temperature of quenching furnance after the cumulative time, three tempering are adopted in tempering, the tempering rate of heating is 15 ~ 25 ℃/h, 520 ~ 560 ℃ of tempering temperatures, soaking time 10 ~ 30h; Air cooling is adopted in a tempering, carries out double tempering during 160 ℃ ~ 180 ℃ of roll surface temperatures, and double tempering adopts stove cold.Air cooling is adopted in three tempering, and the time is benchmark with the workpiece net thickness, every mm thick insulation 10 minutes, cumulative time.
After adopting such scheme, compared with prior art have following beneficial effect: quenching technology of the present invention has guaranteed the depth of hardening zone that workpiece is certain, and depth of hardening zone increases, and can reduce the roll number of times of heavily quenching in use, reduces the roll cost greatly.
Embodiment
A kind of roll tempering heat treatment process: quenching temperature is 910 ℃, with the workpiece net thickness is benchmark, and shrend is carried out in every mm thick insulation 2 minutes after the cumulative time, suppose that the workpiece net thickness is 10mm, then under 910 ℃ temperature, be incubated 20 minutes, use shrend, 160 ℃ ~ 180 ℃ of the cold temperature of quenching furnance, three tempering are adopted in tempering, the tempering rate of heating is 15 ~ 25 ℃/h, 520 ~ 560 ℃ of tempering temperatures, soaking time 10 ~ 30h; Air cooling is adopted in a tempering, carries out double tempering during 160 ℃ ~ 180 ℃ of roll surface temperatures, and double tempering adopts stove cold; Air cooling is adopted in three tempering, and the time is benchmark with the workpiece net thickness, every mm thick insulation 10 minutes, and the cumulative time, 100 minutes hold-times, cold roll requires hard surfacing, and hardness is HS45 ~ 105.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105546413A CN101985685A (en) | 2010-11-23 | 2010-11-23 | Roller tempering heat treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105546413A CN101985685A (en) | 2010-11-23 | 2010-11-23 | Roller tempering heat treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101985685A true CN101985685A (en) | 2011-03-16 |
Family
ID=43710085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105546413A CN101985685A (en) | 2010-11-23 | 2010-11-23 | Roller tempering heat treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101985685A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594636A (en) * | 2004-07-08 | 2005-03-16 | 李春治 | Roll ring steel for aluminium casting rolling mill and heat treatment method thereof |
| CN101186993A (en) * | 2007-12-18 | 2008-05-28 | 宝钢集团常州轧辊制造公司 | Hydrogen embrittlement resistant roller and method for preparing same |
| CN101240402A (en) * | 2008-02-04 | 2008-08-13 | 向勇 | Cast high-boron high-speed steel for composite ring roller and heat treatment method thereof |
| CN101623751A (en) * | 2009-08-14 | 2010-01-13 | 北京工业大学 | Method for preparing boracic low-alloy high-speed steel rolls |
-
2010
- 2010-11-23 CN CN2010105546413A patent/CN101985685A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594636A (en) * | 2004-07-08 | 2005-03-16 | 李春治 | Roll ring steel for aluminium casting rolling mill and heat treatment method thereof |
| CN101186993A (en) * | 2007-12-18 | 2008-05-28 | 宝钢集团常州轧辊制造公司 | Hydrogen embrittlement resistant roller and method for preparing same |
| CN101240402A (en) * | 2008-02-04 | 2008-08-13 | 向勇 | Cast high-boron high-speed steel for composite ring roller and heat treatment method thereof |
| CN101623751A (en) * | 2009-08-14 | 2010-01-13 | 北京工业大学 | Method for preparing boracic low-alloy high-speed steel rolls |
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Application publication date: 20110316 |
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