CN104846180A - Heat treatment method of wear-resistant steel main knife plate for loader - Google Patents
Heat treatment method of wear-resistant steel main knife plate for loader Download PDFInfo
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- CN104846180A CN104846180A CN201510222974.9A CN201510222974A CN104846180A CN 104846180 A CN104846180 A CN 104846180A CN 201510222974 A CN201510222974 A CN 201510222974A CN 104846180 A CN104846180 A CN 104846180A
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- wear
- resistant steel
- knife plate
- steel main
- main knife
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Abstract
The invention discloses a heat treatment method of a wear-resistant steel main knife plate for a loader. The wear-resistant steel main knife plate comprises chemical components including, in weight percent, 2.2-2.5% of C, 8.5-11% of V, 5-6.5% of Cr, 2-3% of Ni, 0.8-1.1% of W, 0.6-0.8% of Si, less than or equal to 0.03% of P, less than or equal to 0.02% of S and the balance Fe. The heat treatment method includes the steps: (1) heating the wear-resistant steel main knife plate to reach the temperature of 880-890 DEG C, keeping the temperature for 10-15min and soaking and cooling the wear-resistant steel main knife plate in sodium chloride aqueous solution; (2) heating the wear-resistant steel main knife plate to reach the temperature of 450-460 DEG C after treatment in the step (1), keeping the temperature for 40-50min and cooling the wear-resistant steel main knife plate in air. The wear-resistant steel main knife plate treated by the method has fine hardness and toughness and excellent wear resistance.
Description
Technical field
The present invention relates to the heat treating method of a kind of shovel loader wear resisting steel operator plate.
Background technology
Shovel loader is one of engineering machinery main in earthwork, wearing and tearing are one of major ways causing this kind of machinery operator blackboard newspaper useless, in use not only to be subject to the strong wear of the abrasive particles such as sandstone, but also the intense impact of large stone will be subject to, therefore, when select materials, need hardness and the toughness of considering material, to reduce wearing and tearing and the fracture of material.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides the heat treating method of a kind of shovel loader wear resisting steel operator plate.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
A kind of heat treating method of shovel loader wear resisting steel operator plate, described wear resisting steel operator plate is containing the chemical composition of following weight percentage: C 2.2 ~ 2.5%, V 8.5 ~ 11%, Cr 5 ~ 6.5%, Ni 2 ~ 3%, W 0.8 ~ 1.1%, Si 0.6 ~ 0.8%, P≤0.03%, S≤0.02%, and surplus is Fe;
Comprise the steps:
(1) wear resisting steel operator plate is heated to 880 ~ 890 DEG C, after insulation 10-15min, immerses in sodium chloride aqueous solution and cools;
(2) after step (1) process, wear resisting steel operator plate is heated to 450 ~ 460 DEG C, and insulation 40 ~ 50min, cools in air.
Further, the concentration of described sodium chloride aqueous solution is 3 ~ 5wt%.
Operate compared with plate with the wear resisting steel of existing shovel loader, the wear resisting steel operator plate through process of the present invention can significantly improve hardness and the toughness of material, alleviates the wearing and tearing of knife plate.
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
Shovel loader wear resisting steel operator plate is containing the chemical composition of following weight percentage: C 2.2%, V 9%, Cr 5%, Ni 2%, W 0.8%, Si 0.6%, surplus are Fe.By proportional quantity, charging, melting, cast molding, obtains described wear resisting steel operator plate.Phosphorus, sulphur are inevitable impurity, should control P≤0.03% in final finished, S≤0.02%.
Thermal treatment:
(1) plate of being operated by wear resisting steel is heated to 880 DEG C, and after insulation 15min, immersing concentration is be cooled to less than 100 DEG C in the sodium chloride aqueous solution of 3%;
(2) after step (1) process, wear resisting steel operator plate is heated to 460 DEG C, and insulation 50min, is cooled to room temperature in air.
The hardness of gained wear resisting steel operator plate is 76.1HRC, and impelling strength is 50J/cm
2.
embodiment 2
Shovel loader wear resisting steel operator plate is containing the chemical composition of following weight percentage: C 2.3%, V 8.5%, Cr 6%, Ni 2.5%, W 1.1%, Si 0.7%, surplus are Fe.By proportional quantity, charging, melting, cast molding, obtains described wear resisting steel operator plate.Phosphorus, sulphur are inevitable impurity, should control P≤0.03% in final finished, S≤0.02%.
Thermal treatment:
(1) plate of being operated by wear resisting steel is heated to 890 DEG C, and after insulation 10min, immersing concentration is be cooled to less than 100 DEG C in the sodium chloride aqueous solution of 3%;
(2) after step (1) process, wear resisting steel operator plate is heated to 450 DEG C, and insulation 50min, is cooled to room temperature in air.
The hardness of gained wear resisting steel operator plate is 78.6HRC, and impelling strength is 58J/cm
2.
embodiment 3
Shovel loader wear resisting steel operator plate is containing the chemical composition of following weight percentage: C 2.5%, V 11%, Cr 6.5%, Ni 3%, W 1%, Si 0.8%, surplus are Fe.By proportional quantity, charging, melting, cast molding, obtains wear resisting steel operator plate.Phosphorus, sulphur are inevitable impurity, should control P≤0.03% in final finished, S≤0.02%.
Thermal treatment:
(1) plate of being operated by wear resisting steel is heated to 885 DEG C, and after insulation 12min, immersing concentration is be cooled to less than 100 DEG C in the sodium chloride aqueous solution of 5%;
(2) after step (1) process, wear resisting steel operator plate is heated to 455 DEG C, and insulation 40min, is cooled to room temperature in air.
The hardness of gained wear resisting steel operator plate is 79.5HRC, and impelling strength is 67J/cm
2.
Last it is noted that 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 (2)
1. the shovel loader heat treating method of wear resisting steel operator plate, described wear resisting steel operator plate is containing the chemical composition of following weight percentage: C 2.2 ~ 2.5%, V 8.5 ~ 11%, Cr 5 ~ 6.5%, Ni 2 ~ 3%, W 0.8 ~ 1.1%, Si 0.6 ~ 0.8%, P≤0.03%, S≤0.02%, and surplus is Fe;
Comprise the steps:
(1) wear resisting steel operator plate is heated to 880 ~ 890 DEG C, after insulation 10-15min, immerses in sodium chloride aqueous solution and cools;
(2) after step (1) process, wear resisting steel operator plate is heated to 450 ~ 460 DEG C, and insulation 40 ~ 50min, cools in air.
2. heat treating method according to claim 1, is characterized in that: the concentration of sodium chloride aqueous solution is 3 ~ 5wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510222974.9A CN104846180A (en) | 2015-05-05 | 2015-05-05 | Heat treatment method of wear-resistant steel main knife plate for loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510222974.9A CN104846180A (en) | 2015-05-05 | 2015-05-05 | Heat treatment method of wear-resistant steel main knife plate for loader |
Publications (1)
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| CN104846180A true CN104846180A (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510222974.9A Pending CN104846180A (en) | 2015-05-05 | 2015-05-05 | Heat treatment method of wear-resistant steel main knife plate for loader |
Country Status (1)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3929471A (en) * | 1971-12-22 | 1975-12-30 | Hitachi Ltd | High speed steel having high wear-resistance |
| CN102534356A (en) * | 2012-02-13 | 2012-07-04 | 驻马店市永诚耐磨材料有限公司 | Wear-resistant white cast iron material and preparation method thereof |
| CN102660714A (en) * | 2012-06-05 | 2012-09-12 | 河南理工大学 | High-carbon and high-vanadium wear-resistant steel |
-
2015
- 2015-05-05 CN CN201510222974.9A patent/CN104846180A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3929471A (en) * | 1971-12-22 | 1975-12-30 | Hitachi Ltd | High speed steel having high wear-resistance |
| CN102534356A (en) * | 2012-02-13 | 2012-07-04 | 驻马店市永诚耐磨材料有限公司 | Wear-resistant white cast iron material and preparation method thereof |
| CN102660714A (en) * | 2012-06-05 | 2012-09-12 | 河南理工大学 | High-carbon and high-vanadium wear-resistant steel |
Non-Patent Citations (2)
| Title |
|---|
| 吴惠明等: "《金属材料与热处理》", 31 July 2012 * |
| 徐自立等: "《工程材料》", 30 June 2012 * |
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Application publication date: 20150819 |