CN104674120A - Housing of rolling mill and method for casting housing of rolling mill - Google Patents
Housing of rolling mill and method for casting housing of rolling mill Download PDFInfo
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- CN104674120A CN104674120A CN201510123009.6A CN201510123009A CN104674120A CN 104674120 A CN104674120 A CN 104674120A CN 201510123009 A CN201510123009 A CN 201510123009A CN 104674120 A CN104674120 A CN 104674120A
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Abstract
The invention discloses a housing of a rolling mill and a method for casting the housing of the rolling mill, relating to the technical field of casting technology. Materials for making the housing of the rolling mill comprise the following chemical components in weight percent: 1.0-2.5 percent of C, 0.4-1.1 percent of Si, 0.1-0.4 percent of Mn, 0.2-0.5 percent of Cr, 1.5-2 percent of W, 0.2-0.5 percent of V, and the balance of Fe and inevitable micro trace impurities. The method for casting the housing of the rolling mill comprises the following steps: smelting the materials of the chemical components to obtain raw material liquid; preparing the cast of the housing according to the actual dimension of the housing of the rolling mill; injecting the raw material liquid into the cast, cooling the cast at room temperature, and performing stress relief annealing on the blank after taking out the blank; performing ultrasonic and magnetic particle nondestructive detection on the thermally-treated blank of the housing of the rolling mill, and thus obtaining the housing of the rolling mill after the detection is passed. Compared with the prior art, the hardness and the abrasion resistance of the housing of the rolling mill cast according to the method for casting the housing of the rolling mill are improved.
Description
Technical field
The present invention relates to Casting Technology field, especially a kind of cast raw material for frame of rolling mill and method.
Background technology
Frame of rolling mill is one of typical parts of large-scale steel-casting, it is the vital part of rolling mill, it is supporting member, it is again stressed member, it subjects the whole rolling loads transmitted through bearing support, and be subject to larger impact, except the good surface quality of guarantee and higher dimensional precision, also must ensure excellent mechanical property; Therefore need to produce and meet more high-performance, the better frame finished product of supporting power.
Summary of the invention
The object of this invention is to provide a kind of frame of rolling mill and castmethod thereof, a problem solved by the invention is to provide a kind of frame of rolling mill cast raw material with high rigidity and high abrasion degree.
Another problem solved by the invention is to provide a kind of castmethod of frame of rolling mill.
In order to solve the problem, the technical solution used in the present invention is: a kind of frame of rolling mill, and the weight percent of its material chemical composition is::
C:1.0% ~ 2.5%, Si:0.4% ~ 1.1%, Mn:0.1% ~ 0.4%, Cr:0.2% ~ 0.5%, W:1.5% ~ 2%, V:0.2% ~ 0.5%, surplus is Fe and inevitable trace impurity.
Another technical solution used in the present invention is: a kind of castmethod of frame of rolling mill, comprises the following steps:
(1) be C:1.0% ~ 2.5% by the weight percent of chemical composition, Si:0.4% ~ 1.1%, Mn:0.1% ~ 0.4%, Cr:0.2% ~ 0.5%, W:1.5% ~ 2%, V:0.2% ~ 0.5%, surplus is that the raw material of Fe and inevitable trace impurity adds in electric arc furnace and smelts, and obtains the starting material liquid of frame of rolling mill;
(2) according to the physical size of frame of rolling mill with Ester cured water glass quartz sand for molding material prepares the casting mold of frame of rolling mill;
(3) the starting material liquid obtained in step (1) is injected the casting mold of frame of rolling mill, teeming temperature is 1500 DEG C ~ 1560 DEG C, and the duration of pouring is 15 minutes;
(4) take out blank after the cooling of casting mold room temperature and carry out stress relief annealing: annealing temperature is 500 DEG C ~ 550 DEG C, and soaking time is 2 hours ~ 4 hours, stove is chilled to 300 DEG C of air coolings of being come out of the stove by blank;
(5) ultrasonic and magnetic nondestructive testing is carried out to the frame of rolling mill blank after thermal treatment, detect and qualified namely obtain this frame of rolling mill.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect: use the produced frame of rolling mill of present method after tested, hardness is HB260 ~ HB305, and fastness to rubbing is also improved.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1:
A kind of frame of rolling mill, the weight percent of its material chemical composition is: C:1.0%, Si:0.4%, Mn:0.1%, Cr:0.2%, W:1.5%, V:0.2%, and surplus is Fe and inevitable trace impurity.
Embodiment 2:
A kind of frame of rolling mill, the weight percent of its material chemical composition is: C:2.5%, Si:1.1%, Mn:0.4%, Cr:0.5%, W:2%, V:0.5%, and surplus is Fe and inevitable trace impurity.
Embodiment 3:
A castmethod for frame of rolling mill, comprises the following steps:
(1) be C:1.0%, Si:0.4%, Mn:0.1%, Cr:0.2%, W:1.5%, V:0.2% by the weight percent of chemical composition, surplus is that the raw material of Fe and inevitable trace impurity adds in electric arc furnace and smelts, and obtains the starting material liquid of frame of rolling mill;
(2) according to the physical size of frame of rolling mill with Ester cured water glass quartz sand for molding material prepares the casting mold of frame of rolling mill;
(3) the starting material liquid obtained in step (1) is injected the casting mold of frame of rolling mill, teeming temperature is 1500 DEG C ~ 1560 DEG C, and the duration of pouring is 15 minutes;
(4) take out blank after the cooling of casting mold room temperature and carry out stress relief annealing: annealing temperature is 500 DEG C ~ 550 DEG C, and soaking time is 2 hours, stove is chilled to 300 DEG C of air coolings of being come out of the stove by blank;
(5) ultrasonic and magnetic nondestructive testing is carried out to the frame of rolling mill blank after thermal treatment, detect and qualified namely obtain this frame of rolling mill.
Its hardness is HB260 after tested.
Embodiment 4:
A castmethod for frame of rolling mill, comprises the following steps:
(1) be C:2.5%, Si:1.1%, Mn:0.4%, Cr:0.5%, W:2%, V:0.5% by the weight percent of chemical composition, surplus is that the raw material of Fe and inevitable trace impurity adds in electric arc furnace and smelts, and obtains the starting material liquid of frame of rolling mill;
(2) according to the physical size of frame of rolling mill with Ester cured water glass quartz sand for molding material prepares the casting mold of frame of rolling mill;
(3) the starting material liquid obtained in step (1) is injected the casting mold of frame of rolling mill, teeming temperature is 1500 DEG C ~ 1560 DEG C, and the duration of pouring is 15 minutes;
(4) take out blank after the cooling of casting mold room temperature and carry out stress relief annealing: annealing temperature is 500 DEG C ~ 550 DEG C, and soaking time is 4 hours, stove is chilled to 300 DEG C of air coolings of being come out of the stove by blank;
(5) ultrasonic and magnetic nondestructive testing is carried out to the frame of rolling mill blank after thermal treatment, detect and qualified namely obtain this frame of rolling mill.
Its hardness is HB305 after tested.
Claims (2)
1. a frame of rolling mill, is characterized in that the weight percent of frame of rolling mill material chemical composition is:
C:1.0% ~ 2.5%, Si:0.4% ~ 1.1%, Mn:0.1% ~ 0.4%, Cr:0.2% ~ 0.5%, W:1.5% ~ 2%, V:0.2% ~ 0.5%, surplus is Fe and inevitable trace impurity.
2. a castmethod for frame of rolling mill, is characterized in that comprising the following steps:
(1) be C:1.0% ~ 2.5% by the weight percent of chemical composition, Si:0.4% ~ 1.1%, Mn:0.1% ~ 0.4%, Cr:0.2% ~ 0.5%, W:1.5% ~ 2%, V:0.2% ~ 0.5%, surplus is that the raw material of Fe and inevitable trace impurity adds in electric arc furnace and smelts, and obtains the starting material liquid of frame of rolling mill;
(2) according to the physical size of frame of rolling mill with Ester cured water glass quartz sand for molding material prepares the casting mold of frame of rolling mill;
(3) the starting material liquid obtained in step (1) is injected the casting mold of frame of rolling mill, teeming temperature is 1500 DEG C ~ 1560 DEG C, and the duration of pouring is 15 minutes;
(4) take out blank after the cooling of casting mold room temperature and carry out stress relief annealing: annealing temperature is 500 DEG C ~ 550 DEG C, and soaking time is 2 hours ~ 4 hours, stove is chilled to 300 DEG C of air coolings of being come out of the stove by blank;
(5) ultrasonic and magnetic nondestructive testing is carried out to the frame of rolling mill blank after thermal treatment, detect and qualified namely obtain this frame of rolling mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510123009.6A CN104674120A (en) | 2015-03-19 | 2015-03-19 | Housing of rolling mill and method for casting housing of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510123009.6A CN104674120A (en) | 2015-03-19 | 2015-03-19 | Housing of rolling mill and method for casting housing of rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104674120A true CN104674120A (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510123009.6A Pending CN104674120A (en) | 2015-03-19 | 2015-03-19 | Housing of rolling mill and method for casting housing of rolling mill |
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| CN (1) | CN104674120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414888A (en) * | 2015-11-20 | 2016-03-23 | 南通弘峰机电有限公司 | Base manufacture technology of four-high mill |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5162113A (en) * | 1974-11-29 | 1976-05-29 | Hitachi Metals Ltd | GOKINKOGUKO |
| JPS5925025B2 (en) * | 1979-07-27 | 1984-06-13 | 株式会社神戸製鋼所 | Roll material with excellent wear resistance and breakage resistance |
| JPH02258953A (en) * | 1989-03-30 | 1990-10-19 | Nippon Steel Corp | Steel wire having high strength and high ductility |
| CN1618541A (en) * | 2003-11-21 | 2005-05-25 | 宝山钢铁股份有限公司 | Mill frame lining board, and its mfg. method |
| CN1710134A (en) * | 2005-07-06 | 2005-12-21 | 燕山大学 | Super bainite abrasion-resistant steel and its manuafcturing process |
-
2015
- 2015-03-19 CN CN201510123009.6A patent/CN104674120A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5162113A (en) * | 1974-11-29 | 1976-05-29 | Hitachi Metals Ltd | GOKINKOGUKO |
| JPS5925025B2 (en) * | 1979-07-27 | 1984-06-13 | 株式会社神戸製鋼所 | Roll material with excellent wear resistance and breakage resistance |
| JPH02258953A (en) * | 1989-03-30 | 1990-10-19 | Nippon Steel Corp | Steel wire having high strength and high ductility |
| CN1618541A (en) * | 2003-11-21 | 2005-05-25 | 宝山钢铁股份有限公司 | Mill frame lining board, and its mfg. method |
| CN1710134A (en) * | 2005-07-06 | 2005-12-21 | 燕山大学 | Super bainite abrasion-resistant steel and its manuafcturing process |
Non-Patent Citations (2)
| Title |
|---|
| 刘炀: "大型轧钢机机架的铸造工艺", 《铸造》 * |
| 李玉民等: "《物流技术与装备》", 31 March 2008, 上海：上海财经大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414888A (en) * | 2015-11-20 | 2016-03-23 | 南通弘峰机电有限公司 | Base manufacture technology of four-high mill |
| CN105414888B (en) * | 2015-11-20 | 2017-10-03 | 南通弘峰机电有限公司 | A kind of footmaker skill of four-high mill |
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Application publication date: 20150603 |
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