CN104818372A - Thermal-treatment method of wear-resistant bucket tooth for excavator - Google Patents
Thermal-treatment method of wear-resistant bucket tooth for excavator Download PDFInfo
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- CN104818372A CN104818372A CN201510223055.3A CN201510223055A CN104818372A CN 104818372 A CN104818372 A CN 104818372A CN 201510223055 A CN201510223055 A CN 201510223055A CN 104818372 A CN104818372 A CN 104818372A
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- bucket tooth
- resistant bucket
- resistant
- excavator
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Abstract
The invention discloses a thermal-treatment method of a wear-resistant bucket tooth for an excavator, wherein the wear-resistant bucket tooth includes following chemical components, by weight: 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 Mn, 0.5-1% of Co, 0.6-0.8% of Si, not more than 0.03% of P, not more than 0.02% of S and the balanced being Fe. The thermal-treatment method includes following steps: (1) heating the wear-resistant bucket tooth to 890-905 DEG C, maintaining the temperature for 5-10 min and then soaking the wear-resistant bucket tooth into a mixed water solution of sodium chloride and sodium sulfate for cooling the bucket tooth; (2) heating the wear-resistant bucket tooth to 490-510 DEG C maintaining the temperature for 40-50 min and cooling the wear-resistant bucket tooth in air. The wear-resistant bucket tooth treated through the method is excellent in hardness and toughness and is quite excellent in wear resistance.
Description
Technical field
The present invention relates to a kind of heat treating method of excavator wear-resistant bucket tooth.
Background technology
Excavator is one of engineering machinery main in earthwork, and bucket tooth is one of frayed more serious part on excavator, 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 a kind of heat treating method of excavator wear-resistant bucket tooth.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
A kind of heat treating method of excavator wear-resistant bucket tooth, described wear-resistant bucket tooth 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%, Mn 0.8 ~ 1.1%, Co 0.5 ~ 1%, Si 0.6 ~ 0.8%, P≤0.03%, S≤0.02%, and surplus is Fe;
Comprise the steps:
(1) wear-resistant bucket tooth is heated to 890 ~ 905 DEG C, after insulation 5-10min, immerses in sodium-chlor and sodium sulfate mixed aqueous solution and cools;
(2) after step (1) process, wear-resistant bucket tooth is heated to 490 ~ 510 DEG C, and insulation 40 ~ 50min, cools in air.
Further, in described sodium-chlor and sodium sulfate mixed aqueous solution, sodium chloride concentration is 2 ~ 3wt%, and sodium sulfate concentration is 1 ~ 2wt%.
Compared with the wear-resistant bucket tooth of existing power shovel, the wear-resistant bucket tooth after process of the present invention can significantly improve hardness and the toughness of material, alleviates the wearing and tearing of bucket tooth.
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
Excavator wear-resistant bucket tooth is containing the chemical composition of following weight percentage: C 2.2%, V 9%, Cr 5%, Ni 2%, Mn 0.8%, Co 0.5%, Si 0.6%, surplus are Fe.By proportional quantity, charging, melting, cast molding, obtains described wear-resistant bucket tooth.Phosphorus, sulphur are inevitable impurity, should control P≤0.03% in final finished, S≤0.02%.
Thermal treatment:
(1) wear-resistant bucket tooth is heated to 895 DEG C, after insulation 5min, immerses in sodium-chlor (2wt%) and sodium sulfate (2wt%) mixed aqueous solution and is cooled to less than 150 DEG C;
(2) after step (1) process, wear-resistant bucket tooth is heated to 490 DEG C, and insulation 50min, cools in air.
The hardness of gained wear-resistant bucket tooth is 65HRC, and impelling strength is 55J/cm
2.
embodiment 2
Excavator wear-resistant bucket tooth is containing the chemical composition of following weight percentage: C 2.3%, V 8.5%, Cr 6%, Ni 2.5%, Mn 1.1%, Co 0.8%, Si 0.7%, surplus are Fe.By proportional quantity, charging, melting, cast molding, obtains described wear-resistant bucket tooth.Phosphorus, sulphur are inevitable impurity, should control P≤0.03% in final finished, S≤0.02%.
Thermal treatment:
(1) wear-resistant bucket tooth is heated to 900 DEG C, after insulation 8min, immerses in sodium-chlor (3wt%) and sodium sulfate (1wt%) mixed aqueous solution and is cooled to less than 150 DEG C;
(2) after step (1) process, wear-resistant bucket tooth is heated to 500 DEG C, and insulation 40min, cools in air.
The hardness of gained wear-resistant bucket tooth is 71HRC, and impelling strength is 57J/cm
2.
embodiment 3
Excavator wear-resistant bucket tooth is containing the chemical composition of following weight percentage: C 2.5%, V 11%, Cr 6.5%, Ni 3%, Mn 1%, Co 1%, Si 0.8%, surplus are Fe.By proportional quantity, charging, melting, cast molding, obtains wear-resistant bucket tooth.Phosphorus, sulphur are inevitable impurity, should control P≤0.03% in final finished, S≤0.02%.
Thermal treatment:
(1) wear-resistant bucket tooth is heated to 905 DEG C, after insulation 10min, immerses in sodium-chlor (3wt%) and sodium sulfate (2wt%) mixed aqueous solution and is cooled to less than 150 DEG C;
(2) after step (1) process, wear-resistant bucket tooth is heated to 510 DEG C, and insulation 50min, cools in air.
The hardness of gained wear-resistant bucket tooth is 79HRC, and impelling strength is 65J/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 heat treating method of an excavator wear-resistant bucket tooth, described wear-resistant bucket tooth 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%, Mn 0.8 ~ 1.1%, Co 0.5 ~ 1%, Si 0.6 ~ 0.8%, P≤0.03%, S≤0.02%, and surplus is Fe;
Comprise the steps:
(1) wear-resistant bucket tooth is heated to 890 ~ 905 DEG C, after insulation 5-10min, immerses in sodium-chlor and sodium sulfate mixed aqueous solution and cools;
(2) after step (1) process, wear-resistant bucket tooth is heated to 490 ~ 510 DEG C, and insulation 40 ~ 50min, cools in air.
2. heat treating method according to claim 1, is characterized in that: in described sodium-chlor and sodium sulfate mixed aqueous solution, sodium chloride concentration is 2 ~ 3wt%, and sodium sulfate concentration is 1 ~ 2wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223055.3A CN104818372A (en) | 2015-05-05 | 2015-05-05 | Thermal-treatment method of wear-resistant bucket tooth for excavator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510223055.3A CN104818372A (en) | 2015-05-05 | 2015-05-05 | Thermal-treatment method of wear-resistant bucket tooth for excavator |
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| CN104818372A true CN104818372A (en) | 2015-08-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077513A (en) * | 2016-07-26 | 2016-11-09 | 柳州金特新型耐磨材料股份有限公司 | A kind of front axle housing body heat processing method |
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2015
- 2015-05-05 CN CN201510223055.3A patent/CN104818372A/en active Pending
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| JPH06108204A (en) * | 1992-09-25 | 1994-04-19 | Kanai Hiroyuki | Production of wire rod for spike pin and spike pin |
| CN101392314A (en) * | 2007-09-20 | 2009-03-25 | 吴江市天地人真空炉业有限公司 | Heat treating process of low alloy steel trolley sawtooth casting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106077513A (en) * | 2016-07-26 | 2016-11-09 | 柳州金特新型耐磨材料股份有限公司 | A kind of front axle housing body heat processing method |
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Application publication date: 20150805 |
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