CN1594636A - Roll ring steel for aluminium casting rolling mill and heat treatment method thereof - Google Patents
Roll ring steel for aluminium casting rolling mill and heat treatment method thereof Download PDFInfo
- Publication number
- CN1594636A CN1594636A CN 200410052623 CN200410052623A CN1594636A CN 1594636 A CN1594636 A CN 1594636A CN 200410052623 CN200410052623 CN 200410052623 CN 200410052623 A CN200410052623 A CN 200410052623A CN 1594636 A CN1594636 A CN 1594636A
- Authority
- CN
- China
- Prior art keywords
- tempering
- roll ring
- rolling mill
- steel
- heat treatment
- 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.)
- Granted
Links
Images
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a roll ring steel for aluminum casting rolling mill and its heat treatment method. Chemical ingredient weight percentage of roll ring steel for aluminum casting rolling mill are : C 0.30-0.45, Mn 0.60-0.80, Si 0.20-0.40, P <=0.025, S <=0.025, Cr 2.00-3.00, Ni 0.50-1.00, Mo 0.80-1.20, V 0.10-0.20, Al <=0.012, surplus being ferrum and other impurity. The final heat treatment method of roll ring steel adopt second tempering after quenching. Quenching temperature is 850-920 DEG C , and proceeding in engine oil after heat preservation. In first tempering, roll ring is heated to 500-560 DEG C , insulated 10-20 hours, cooled in engine oil. The second tempering parameters are same with that of first tempering. The invention promotes anti heat fatigue crack capability of roll ring, so promotes the life of roll ring.
Description
(1) technical field
The present invention relates to roller sleeve steel for aluminium casting-rolling mill and heat treating method thereof.
(2) background technology
The eighties in 20th century, China began to adopt rolling casting technology and equipment in the aluminium processing, and developing by leaps and bounds has appearred in the first three years China cast-rolling aluminum volume production of the latter stage nineties to 21 century.New casting and rolling machine constantly puts into production, but the state of the art of key part casting roller than developed country backward about 20 years in the casting and rolling machine.Roller shell is a steel alloy cylindrical shell on the casting roller, and hot jacket is formed the casting roller on roller core, referring to Fig. 1.Roller shell also is the working part of casting roller, and aluminium liquid flows to and promptly is frozen into solid aluminum on the roller shell, is rolled into a strip simultaneously, referring to Fig. 2.Explosion takes place in the unstable properties of existing roller shell sometimes in the working process, occur abnormal fatigue cracking sometimes, causes roller shell to be scrapped, and causes enormous economic loss.Its reason is that there is unreasonable part in the production technique of roller shell because the resistance to cleavage of roller case material is bad.
(3) summary of the invention
The object of the present invention is to provide a kind of roller sleeve steel for aluminium casting-rolling mill and heat treating method.It has overcome the defective of prior art, has improved the ability of roller shell thermal fatigue resistance crackle, thereby has reduced the production fault work-ing life of having improved roller shell, has reduced production cost.
For solving the problems of the technologies described above, a kind of roller sleeve steel for aluminium casting-rolling mill of the present invention, its chemical component weight per-cent (%) is: carbon (C) 0.30～0.45, manganese (Mn) 0.60～0.80, silicon (Si) 0.20～0.40, phosphorus (P)≤0.025, sulphur (S)≤0.025, chromium (Cr) 2.00～3.00, nickel (Ni) 0.50～1.00, molybdenum (Mo) 0.80～1.20, vanadium (V) 0.10～0.20, aluminium (Al)≤0.012, all the other are iron and other impurity.
The final heat treating method of implementing roller sleeve steel for aluminium casting-rolling mill is: the back double tempering that quenches, and quenching temperature is 850～920 ℃, quench in machine oil in the insulation back; The roller shell of tempering for the first time is heated to 500～560 ℃, is incubated 10～20 hours, cools off in machine oil; Tempering parameter is with tempering parameter is identical for the first time for the second time.
The present invention has done two improvement on the basis of existing roller sleeve steel material.One is the content that has increased roller sleeve steel material carbon, adopts nickel instead of part chromium, adjusts the content of manganese element silicon.Its two, adopting in the final thermal treatment of roller shell after forging postheat treatment quenches adds double tempering and handles, tempering insulation time prolongs, and adopts and cool off in machine oil.Roller shell Brinell hardness number after heat treatment can reach 390～420HB, uniformity of hardness≤15HB.The present invention has improved the ability of roller shell thermal fatigue resistance crackle, thereby has reduced the production fault work-ing life of having improved roller shell, has reduced production cost.
(4) description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is a casting roll structure synoptic diagram;
Fig. 2 is the casting and rolling machine fundamental diagram;
Fig. 3 is the final heat treatment cycle curve figure of roller shell;
Fig. 4 is a roller shell hardness measurement station diagram.
Among the figure: 1 roller shell, 2 roller cores, 3 Casting or rolling nozzles, 4 aluminium liquid, 5 is cursory, 6 preceding casees, 7 aluminium liquid, 8 roll casting sheets.
(5) embodiment
Embodiment 1
Make steel in 26 tons of electric arc furnace, pour into a mould 13.2 tons two of octagon ingots (freely forge and press and use steel ingot), steelmaking feed mainly is selected steel scrap, conversion pig, corresponding iron alloy, 33 tons of every stove raw material gross weights.Deoxidation of molten steel adopts Si-Ca iron, without aluminium deoxidation.Molten steel also needs to carry out refining in 30 tons of ladle refining furnaces.Carry out trimming and vacuum refinement degasification in the refining process.Vacuum tightness is＜133Pa that the degasification time is 12 minutes.The final chemical ingredients (weight percent) of molten steel is: C 0.43, and Mn 0.76, and Si 0.39, and P 0.012, and S 0.008, and Cr 2.80, and Ni 0.90, and Mo 1.10, and V 0.18, and Al 0.01, and all the other are iron and other impurity.
Steel ingot forges into two of the round shape forge piece blank reheating of external diameter 1000mm, internal diameter 750mm, long 1870mm on 2500 tons of water pressure engine, blank is after normalizing adds tempering and forges postheat treatment, and its hardness is＜240HB, changes roughing over to.Roughing is of a size of the cylindrical shell of external diameter 970mm, internal diameter 820mm, long 1770mm.This cylindrical shell can carry out final thermal treatment.
Referring to Fig. 3, the final thermal treatment of cylindrical shell is carried out in well-type electric furnace, and quenching temperature is 890 ℃, is incubated 3 hours, and is cold soon in machine oil then; Still in well-type electric furnace, tempering temperature is 540 ℃ for the first time, is incubated 15 hours, and is cold soon in machine oil after the tempering in tempering; Tempering temperature also is 540 ℃ for the second time, is incubated 15 hours, and is cold soon in machine oil after the tempering, crisp to avoid that tempering takes place.
After final thermal treatment is finished cylindrical shell is carried out hardness test, referring to Fig. 4, test result is: left 409HB, middle 420HB, right 415HB, uniformity of hardness＜15HB.This cylindrical shell is roller shell after processing.
Show through using on the machine: this roller shell not only splitting resistance is good, and thermal fatigue resistance also is greatly improved than existing roller shell.Existing roller shell use is no more than 12 days and begins to occur fatigue cracking, and this roller shell uses and just began to produce fatigue cracking in 15 days later on.
Make steel in 26 tons of electric arc furnace, pour into a mould 13.2 tons two of octagon ingots (freely forge and press and use steel ingot), steelmaking feed mainly is selected steel scrap, conversion pig, corresponding iron alloy, 33 tons of every stove raw material gross weights.Deoxidation of molten steel adopts Si-Ca iron, without aluminium deoxidation.Molten steel also needs to carry out refining in 30 tons of ladle refining furnaces.Carry out trimming and vacuum refinement degasification in the refining process.Vacuum tightness is＜133Pa that the degasification time is 12 minutes.The final chemical ingredients (weight percent) of molten steel is: C 0.38, and Mn 0.70, and Si 0.35, and P 0.011, and S 0.008, and Cr 2.40, and Ni 0.70, and Mo 0.95, and V 0.15, and Al 0.01, and all the other are iron and other impurity.
Every steel ingot forges into two of the round shape forge piece blank reheating of external diameter 730mm, internal diameter 500mm, long 1720mm on 2500 tons of water pressure engine, totally four on two steel ingots.Blank is after normalizing adds tempering forging postheat treatment, and tested for hardness is 210～230HB, changes roughing over to.Roughing is of a size of the cylindrical shell of external diameter 700mm, internal diameter 590mm, long 1620mm.This cylindrical shell can carry out final thermal treatment.
Referring to Fig. 3, the final thermal treatment of cylindrical shell is carried out in well-type electric furnace, and quenching temperature is 890 ℃, is incubated 2.8 hours, and is cold soon in machine oil then; Still in well-type electric furnace, tempering temperature is 530 ℃ for the first time, is incubated 10 hours, and is cold soon in machine oil after the tempering in tempering; Tempering temperature also is 530 ℃ for the second time, is incubated 10 hours, and is cold soon in machine oil after the tempering, crisp to avoid that tempering takes place.
After final thermal treatment is finished cylindrical shell is carried out hardness test, referring to Fig. 4, test result is: left 410HB, middle 418HB, right 420HB, uniformity of hardness＜15HB.This cylindrical shell is roller shell after processing.
Make steel in 26 tons of electric arc furnace, pour into a mould 13.2 tons two of octagon ingots (freely forge and press and use steel ingot), steelmaking feed mainly is selected steel scrap, conversion pig, corresponding iron alloy, 33 tons of every stove raw material gross weights.Deoxidation of molten steel adopts Si-Ca iron, without aluminium deoxidation.Molten steel also needs to carry out refining in 30 tons of ladle refining furnaces.Carry out trimming and vacuum refinement degasification in the refining process.Vacuum tightness is＜133Pa that the degasification time is 12 minutes.The final chemical ingredients (weight percent) of molten steel is: C 0.32, and Mn 0.62, and Si 0.30, and P 0.012, and S 0.009, and Cr 2.20, and Ni 0.65, and Mo 0.83, and V 0.16, and Al 0.01, and all the other are iron and other impurity.
Every steel ingot forges into three of the round shape forge piece blank reheating of external diameter 690mm, internal diameter 500mm, long 1420mm on 2500 tons of water pressure engine, totally six on two steel ingots.Blank is after normalizing adds tempering forging postheat treatment, and its hardness is＜240HB, changes roughing over to.Roughing is of a size of the cylindrical shell of external diameter 660mm, internal diameter 550mm, long 1320mm.This cylindrical shell can carry out final thermal treatment
Referring to Fig. 3, the final thermal treatment of cylindrical shell is carried out in well-type electric furnace, and quenching temperature is 890 ℃, is incubated 2.5 hours, and is cold soon in machine oil then; Still in well-type electric furnace, tempering temperature is 510 ℃ for the first time, is incubated 16 hours, and is cold soon in machine oil after the tempering in tempering; Tempering temperature also is 510 ℃ for the second time, is incubated 16 hours, and is cold soon in machine oil after the tempering, crisp to avoid that tempering takes place.
After final thermal treatment is finished cylindrical shell is carried out hardness test, referring to Fig. 4, test result is: left 415HB, middle 410HB, right 420HB, uniformity of hardness＜15HB.This cylindrical shell is roller shell after processing.
Claims (2)
1. roller sleeve steel for aluminium casting-rolling mill, it is characterized in that its chemical component weight per-cent (%) is: carbon (C) 0.30～0.45, manganese (Mn) 0.60～0.80, silicon (Si) 0.20～0.40, phosphorus (P)≤0.025, sulphur (S)≤0.025, chromium (Cr) 2.00～3.00, nickel (Ni) 0.50～1.00, molybdenum (Mo) 0.80～1.20, vanadium (V) 0.10～0.20, aluminium (Al)≤0.012, all the other are iron and other impurity.
2. implement the final heat treating method of the described roller sleeve steel for aluminium casting-rolling mill of claim 1, the back double tempering that it is characterized in that quenching, quenching temperature is 850～920 ℃, quench in machine oil in the insulation back; The roller shell of tempering for the first time is heated to 500～560 ℃, is incubated 10～20 hours, cools off in machine oil; Tempering parameter is with tempering parameter is identical for the first time for the second time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052623 CN1285749C (en) | 2004-07-08 | 2004-07-08 | Roll ring steel for aluminium casting rolling mill and heat treatment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052623 CN1285749C (en) | 2004-07-08 | 2004-07-08 | Roll ring steel for aluminium casting rolling mill and heat treatment method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594636A true CN1594636A (en) | 2005-03-16 |
| CN1285749C CN1285749C (en) | 2006-11-22 |
Family
ID=34666078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410052623 Expired - Fee Related CN1285749C (en) | 2004-07-08 | 2004-07-08 | Roll ring steel for aluminium casting rolling mill and heat treatment method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1285749C (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344786C (en) * | 2005-09-14 | 2007-10-24 | 武汉双特机械有限公司 | High strength heat resistant antiwear vertical mill sheath and its making process |
| CN101974723A (en) * | 2010-09-26 | 2011-02-16 | 中钢集团邢台机械轧辊有限公司 | Impact-resistance double-roller roughing roll and manufacturing method thereof |
| CN101985685A (en) * | 2010-11-23 | 2011-03-16 | 大连冶金工具厂有限公司 | Roller tempering heat treatment process |
| CN101798660B (en) * | 2010-01-11 | 2011-07-20 | 段岳君 | Method for refining, metamorphosing and casting cold roll steel by casting instead of forging |
| CN102962652A (en) * | 2012-12-17 | 2013-03-13 | 重庆京庆重型机械股份有限公司 | Processing method for roller sleeve of roller press |
| CN104561505A (en) * | 2014-12-30 | 2015-04-29 | 中钢集团邢台机械轧辊有限公司 | Large-size roller sheath surface induction quenching method |
| CN104593691A (en) * | 2014-12-26 | 2015-05-06 | 中钢集团邢台机械轧辊有限公司 | Roller sleeve for large forged alloy steel carrying roller and manufacturing method thereof |
| CN105543451A (en) * | 2016-01-20 | 2016-05-04 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for inlaid backup roll sleeve |
| CN106244935A (en) * | 2016-08-25 | 2016-12-21 | 上海电气（无锡）锻压有限公司 | Super clean 32Cr3Mo1V steel rider set chemical analysis proportioning and manufacturing process thereof |
| CN110699593A (en) * | 2019-11-28 | 2020-01-17 | 江苏环宇冶金科技有限公司 | Melting device of 32Cr3Mo1V steel casting roll sleeve and production process of steel casting roll sleeve |
| CN112872041A (en) * | 2020-12-24 | 2021-06-01 | 东台市宏凯不锈钢有限公司 | Manganese alloy roller and manufacturing method thereof |
| CN113215383A (en) * | 2021-04-15 | 2021-08-06 | 无锡市捷安轧辊制造有限公司 | Heat treatment method for improving hardness and uniformity of casting roller sleeve |
| CN116288059A (en) * | 2023-02-16 | 2023-06-23 | 江苏省沙钢钢铁研究院有限公司 | Steel for high-strength tensile testing machine clamp and preparation method thereof |
-
2004
- 2004-07-08 CN CN 200410052623 patent/CN1285749C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344786C (en) * | 2005-09-14 | 2007-10-24 | 武汉双特机械有限公司 | High strength heat resistant antiwear vertical mill sheath and its making process |
| CN101798660B (en) * | 2010-01-11 | 2011-07-20 | 段岳君 | Method for refining, metamorphosing and casting cold roll steel by casting instead of forging |
| CN101974723A (en) * | 2010-09-26 | 2011-02-16 | 中钢集团邢台机械轧辊有限公司 | Impact-resistance double-roller roughing roll and manufacturing method thereof |
| CN101985685A (en) * | 2010-11-23 | 2011-03-16 | 大连冶金工具厂有限公司 | Roller tempering heat treatment process |
| CN102962652A (en) * | 2012-12-17 | 2013-03-13 | 重庆京庆重型机械股份有限公司 | Processing method for roller sleeve of roller press |
| CN104593691A (en) * | 2014-12-26 | 2015-05-06 | 中钢集团邢台机械轧辊有限公司 | Roller sleeve for large forged alloy steel carrying roller and manufacturing method thereof |
| CN104593691B (en) * | 2014-12-26 | 2017-03-22 | 中钢集团邢台机械轧辊有限公司 | Roller sleeve for large forged alloy steel carrying roller and manufacturing method thereof |
| CN104561505A (en) * | 2014-12-30 | 2015-04-29 | 中钢集团邢台机械轧辊有限公司 | Large-size roller sheath surface induction quenching method |
| CN105543451A (en) * | 2016-01-20 | 2016-05-04 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for inlaid backup roll sleeve |
| CN106244935A (en) * | 2016-08-25 | 2016-12-21 | 上海电气（无锡）锻压有限公司 | Super clean 32Cr3Mo1V steel rider set chemical analysis proportioning and manufacturing process thereof |
| CN110699593A (en) * | 2019-11-28 | 2020-01-17 | 江苏环宇冶金科技有限公司 | Melting device of 32Cr3Mo1V steel casting roll sleeve and production process of steel casting roll sleeve |
| CN112872041A (en) * | 2020-12-24 | 2021-06-01 | 东台市宏凯不锈钢有限公司 | Manganese alloy roller and manufacturing method thereof |
| CN113215383A (en) * | 2021-04-15 | 2021-08-06 | 无锡市捷安轧辊制造有限公司 | Heat treatment method for improving hardness and uniformity of casting roller sleeve |
| CN116288059A (en) * | 2023-02-16 | 2023-06-23 | 江苏省沙钢钢铁研究院有限公司 | Steel for high-strength tensile testing machine clamp and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1285749C (en) | 2006-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106480374B (en) | A kind of cold-resistant pipeline high tenacity low yield strength ratio hot-rolled thick plank and its production method | |
| CN103949805B (en) | A kind of method preparing nickel-base alloy bare welding filler metal | |
| CN104988435B (en) | Low-carbon high-tenacity super-thick steel plate and manufacturing method thereof | |
| CN1285749C (en) | Roll ring steel for aluminium casting rolling mill and heat treatment method thereof | |
| CN108277443B (en) | Support roll of wide and thick plate mill with width of more than 4200mm and manufacturing process thereof | |
| CN103949798B (en) | A kind of preparation method of nickel-base alloy bare welding filler metal | |
| CN113106206B (en) | Manufacturing method of 1Cr11Ni2W2MoV heat-resistant steel forging for fastener | |
| CN103949806B (en) | A kind of preparation method of welding wire | |
| CN102899460A (en) | Heat treatment method for martensitic stainless steel forging module | |
| CN103540838A (en) | Steel plate for low-temperature vessel and production method thereof | |
| CN111893367A (en) | Method for producing 5CrNi2MoV hot-work die steel plate by using continuous casting slab | |
| CN102000954A (en) | Method for manufacturing continuous pipe mill retained mandrel | |
| CN110935827A (en) | Forging method of large-specification fine-grain austenitic gas valve steel SNCrW | |
| CN104846176B (en) | A kind of eliminate the casting-rolling method of delta ferrite in martensite aged stainless steel strip | |
| CN107974638A (en) | A kind of thickness of continuous casting billet manufacture reaches the manufacture method of 180mm rack steel plates | |
| CN115181911B (en) | Super-thick Q500qE bridge steel plate and production method thereof | |
| CN115011878A (en) | Round steel with high sulfuric acid dew point corrosion resistance and preparation method thereof | |
| CN107475527A (en) | A kind of high efficient thermoforming process of Mo austenitic stainless steels | |
| CN107245565A (en) | The stress relief annealing method of the effective steel continuous casting round bloom of high-pressure boiler | |
| CN115261746B (en) | Super-thick Q420qE bridge steel plate and production method thereof | |
| CN103949800B (en) | A kind of welding wire be made up of Cr28Ni48W5 nickel-base alloy | |
| CN114749617B (en) | Production method for reducing mountain scales at hot rolled edge of 200 series stainless steel | |
| CN111676421B (en) | Rolling method of martensite air valve steel rolled blank | |
| CN103949801B (en) | A kind of welding wire | |
| CN110814568B (en) | High-toughness medium manganese steel gas shielded welding wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061122 Termination date: 20140708 |
|
| EXPY | Termination of patent right or utility model |