CN105177253A - Thermal treatment method for improving hardness and tenacity of steel rod for rod mill - Google Patents
Thermal treatment method for improving hardness and tenacity of steel rod for rod mill Download PDFInfo
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- CN105177253A CN105177253A CN201510436782.8A CN201510436782A CN105177253A CN 105177253 A CN105177253 A CN 105177253A CN 201510436782 A CN201510436782 A CN 201510436782A CN 105177253 A CN105177253 A CN 105177253A
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- rod
- steel rod
- tenacity
- hardness
- rod iron
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Abstract
The invention discloses a thermal treatment method for improving hardness and tenacity of a steel rod for a rod mill. The steel rod is induced and heated to 1,000-1,200 DEG C, and after complete austenitizing of the steel rod is achieved, water quenching cooling is immediately carried out so as to obtain a total martensitic structure. After water quenching of the steel rod is finished, low-temperature tempering treatment is immediately carried out, and a product with a microscopic structure being tempered martensite is obtained. During deoxygenation, aluminum is adopted as a deoxygenation agent, the amount of added aluminum is 0.4%-0.5% of the weight of molten steel, standing should be carried out for 10-15 min after deoxygenation, and a deoxygenated product floats. According to the thermal treatment method for improving hardness and tenacity of the steel rod for the rod mill, the hardness, abrasion resistance and tenacity of the steel rod are improved through precise processing of technological parameters, and the problems that due to low hardness, poor tenacity and the like of the steel rod, the steel rod is fractured and bent are solved.
Description
Technical field
The present invention relates to a kind of heat treating method improving rod mill rod iron hardness and toughness.
Background technology
Along with the fast development of China's industry, all trades and professions are had higher requirement to energy-saving and cost-reducing.The raising production efficiency of production unit and the work-ing life of extension device are energy-saving and cost-reducing effective means.Heat treatment industry also at the potential of constantly employing new technology, novel process fully excavates material, extends its work-ing life, to reach energy-saving and cost-reducing object.
As a kind of conventional mine size reduction machinery, rod mill there has also been significant progress in recent years.Grinding medium-the frotton (rod iron) of the type machinery is the running stores of rod mill, and existing commercially conventional abrasion-proof manganese steel rod is primarily of steel mill's roll forming, and its mechanical property is not high, and abrasion resistant effect extreme difference, consumption is very big in use.The production cost that traditional rod iron produces due to abrasion is high, can not meet the growth requirement of industry, and the wear-resisting rod iron of development of new is imperative.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides a kind of heat treating method improving rod mill rod iron hardness and toughness.
Object of the present invention carrys out specific implementation by the following technical programs:
A kind of heat treating method improving rod mill rod iron hardness and toughness, by rod iron through induction heating to 1000-1200 DEG C, after making rod iron complete austenitizing, the cooling of shrend is immediately to obtain full martensitic stucture, carry out low-temperaturetempering process immediately after rod iron shrend completes, obtaining microstructure is the product of tempered martensite; During deoxidation, employing aluminium is reductor, and add-on is 0.4% ~ 0.5% of Metal Weight, should leave standstill 10-15 minute after deoxidation, and deoxidation products is floated.
Beneficial effect of the present invention:
The heat treating method of raising rod mill rod iron hardness provided by the invention and toughness, by the accurate process to processing parameter, the hardness of gained rod iron, wear resistance and toughness are obtained for lifting, solve the problem such as disconnected rod, curved rod that the reasons such as rod iron hardness is low, poor toughness cause.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
embodiment 1:
A kind of heat treating method improving rod mill rod iron hardness and toughness, by rod iron through induction heating to 1000-1200 DEG C, after making rod iron complete austenitizing, the cooling of shrend is immediately to obtain full martensitic stucture, carry out low-temperaturetempering process immediately after rod iron shrend completes, obtaining microstructure is the product of tempered martensite; During deoxidation, employing aluminium is reductor, and add-on is 0.4% ~ 0.5% of Metal Weight, should leave standstill 10-15 minute after deoxidation, and deoxidation products is floated.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. one kind is improved the heat treating method of rod mill rod iron hardness and toughness, it is characterized in that: by rod iron through induction heating to 1000-1200 DEG C, after making rod iron complete austenitizing, the cooling of shrend is immediately to obtain full martensitic stucture, carry out low-temperaturetempering process immediately after rod iron shrend completes, obtaining microstructure is the product of tempered martensite; During deoxidation, employing aluminium is reductor, and add-on is 0.4% ~ 0.5% of Metal Weight, should leave standstill 10-15 minute after deoxidation, and deoxidation products is floated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510436782.8A CN105177253A (en) | 2015-07-23 | 2015-07-23 | Thermal treatment method for improving hardness and tenacity of steel rod for rod mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510436782.8A CN105177253A (en) | 2015-07-23 | 2015-07-23 | Thermal treatment method for improving hardness and tenacity of steel rod for rod mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105177253A true CN105177253A (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510436782.8A Pending CN105177253A (en) | 2015-07-23 | 2015-07-23 | Thermal treatment method for improving hardness and tenacity of steel rod for rod mill |
Country Status (1)
| Country | Link |
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| CN (1) | CN105177253A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455284A (en) * | 2020-05-26 | 2020-07-28 | 宜阳县鼎钰耐材有限公司 | Wear-resistant alloy steel bar and heat treatment process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165201A (en) * | 1997-02-27 | 1997-11-19 | 河北电力设备厂 | High ductility high chromium abrasion-resistant ball for ball grinder and its manufacturing method |
| CN1244596A (en) * | 1999-08-04 | 2000-02-16 | 沈阳培新钢筋有限公司 | Steel bar for high-strength prestressed concrete and production process thereof |
| CN1624180A (en) * | 2004-12-15 | 2005-06-08 | 宁波浙东精密铸造有限公司 | High boron foundry iron base anti-wear alloy and its heat treatment method |
| EP2687612A1 (en) * | 2011-03-18 | 2014-01-22 | Nippon Steel & Sumitomo Metal Corporation | Steel pipe quenching method |
-
2015
- 2015-07-23 CN CN201510436782.8A patent/CN105177253A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165201A (en) * | 1997-02-27 | 1997-11-19 | 河北电力设备厂 | High ductility high chromium abrasion-resistant ball for ball grinder and its manufacturing method |
| CN1244596A (en) * | 1999-08-04 | 2000-02-16 | 沈阳培新钢筋有限公司 | Steel bar for high-strength prestressed concrete and production process thereof |
| CN1624180A (en) * | 2004-12-15 | 2005-06-08 | 宁波浙东精密铸造有限公司 | High boron foundry iron base anti-wear alloy and its heat treatment method |
| EP2687612A1 (en) * | 2011-03-18 | 2014-01-22 | Nippon Steel & Sumitomo Metal Corporation | Steel pipe quenching method |
Non-Patent Citations (1)
| Title |
|---|
| 天津大学金属学热处理教研室译: "《钢铁中的铝》", 30 April 1965, 中国工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455284A (en) * | 2020-05-26 | 2020-07-28 | 宜阳县鼎钰耐材有限公司 | Wear-resistant alloy steel bar and heat treatment process thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |
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| RJ01 | Rejection of invention patent application after publication |