CN105002441A - Steel for high-hardenability wear-resistant bucket teeth - Google Patents
Steel for high-hardenability wear-resistant bucket teeth Download PDFInfo
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- CN105002441A CN105002441A CN201510491328.2A CN201510491328A CN105002441A CN 105002441 A CN105002441 A CN 105002441A CN 201510491328 A CN201510491328 A CN 201510491328A CN 105002441 A CN105002441 A CN 105002441A
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- steel
- wear
- hardenability
- bucket teeth
- resistant bucket
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Abstract
The invention discloses steel for high-hardenability wear-resistant bucket teeth. Through reasonable composite design, the wear resistance of the steel for bucket teeth is further improved, the service life of the steel for bucket teeth is further prolonged, and the steel includes the following chemical constituents by mass percent: 0.28-0.33% of C, 0.1-0.40% of Si, 1.30-2.00% of Mn, not greater than 0.025% of P, not greater than 0.025% of S, 0.020-0.060% of Al, 0.0010-0.0035% of B, 0.08-0.20% of V, 1.00-1.50% of Cr, 0.15-0.40% of Mo, not greater than 0.30% of Ni, not greater than 0.30% of Cu, not greater than 0.020% of Pb, not greater than 0.030% of Sn, and the balance of Fe and inevitable impurities.
Description
Technical field
The present invention relates to metal material field, particularly relate to a kind of high-hardenability wear-resistant bucket tooth steel.
Background technology
Bucket tooth is generally contained in the front end of power shovel, it is cantilevered beam members, excavator and dozer are widely used in the industries such as mine, metallurgy, electric power, building materials, cement, machinery, by the rapid wear accessory consumed in a large number in digging operation, because working conditions is severe, failure mode majority is wearing and tearing, and minority ruptures.The most frequently used being high mangaenese steel and mostly being casting of domestic bucket tooth material, it is low that it also exists work-ing life, the problem of Resisting fractre ability.In China, annual bucket tooth consumption is very large.How to improve the work-ing life of bucket tooth, develop production technique easy, use reliable, cheap and good-quality novel bucket tooth high-abrasive material, be still the problem that current needs solve further.
Summary of the invention
The object of this invention is to provide a kind of high-hardenability wear-resistant bucket tooth steel, by its chemical composition rational proportion, continuous casting can be realized and produce.
For reaching above-mentioned purpose, a kind of high-hardenability wear-resistant bucket tooth of the present invention steel, its chemical composition by mass percent is: C 0.28 ~ 0.33%, Si 0.10 ~ 0.40%, Mn 1.30 ~ 2.00%, P≤0.025%, S≤0.025%, Al 0.020 ~ 0.060%, B 0.0010 ~ 0.0035%, V0.08 ~ 0.20%, Cr1.00 ~ 1.50%, Mo0.15 ~ 0.40%, Ni≤0.30%, Cu≤0.30%, Pb≤0.020%, Sn≤0.030%, other is Fe and inevitable impurity.
The invention difference from existing technology is that the present invention achieves following technique effect:
The present invention by reasonable component proportioning, can realize the feasibility of continuous casting, reduces production cost and reduces environmental pollution, improve simultaneously high-end product the market competitiveness.
Embodiment
Below in conjunction with embodiment, to above-mentioned being described in more detail with other technical characteristic and advantage of the present invention.
1, steel grades proportioning
Chemical composition by mass percent is: C 0.28 ~ 0.33%, Si 0.10 ~ 0.40%, Mn 1.30 ~ 2.00%, P≤0.025%, S≤0.025%, Al 0.020 ~ 0.060%, B 0.0010 ~ 0.0035%, V0.08 ~ 0.20%, Cr1.00 ~ 1.50%, Mo0.15 ~ 0.40%, Ni≤0.30%, Cu≤0.30%, Pb≤0.020%, Sn≤0.030%, other is Fe and inevitable impurity.
Embodiment
Table 1 steel grades is implemented
| Heat (batch) number | C | Si | Mn | P | S | Al | B | V | Cr | Mo |
| Embodiment 1 | 0.28 | 0.20 | 1.40 | 0.020 | 0.014 | 0.033 | 0.0018 | 0.09 | 1.15 | 0.21 |
| Embodiment 2 | 0.30 | 0.24 | 1.55 | 0.016 | 0.019 | 0.025 | 0.0022 | 0.12 | 1.23 | 0.29 |
| Embodiment 3 | 0.32 | 0.30 | 1.80 | 0.016 | 0.016 | 0.037 | 0.0018 | 0.15 | 1.45 | 0.38 |
2, thermal treatment process
1) H thermal treatment process
As composition in above-mentioned table 1 will forge rear hot rolled circular steel after about 870 DEG C normalizings, after being processed into steel end-quenched, about 840 DEG C quenchings, measure the H of each embodiment.The H of each embodiment is in table 2.
The H of each embodiment of table 2
2) mechanical property thermal treatment process
Round steel, after about 850 DEG C quenchings, about 450 DEG C tempering, measures the correlated performance of each embodiment.Each embodiment correlated performance sees the following form 3,4 related checks.
Round steel tension test implemented by table 3
| R p0.2(MPa) | R m(MPa) | A％ | Z％ | |
| Embodiment 1 | 1190 | 1303 | 12.00 | 47 |
| Embodiment 2 | 1204 | 1311 | 11.00 | 49 |
| Embodiment 3 | 1180 | 1290 | 11.5 | 50 |
Table 4 Charpy impact test and hardness
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (1)
1. a high-hardenability wear-resistant bucket tooth steel, it is characterized in that its chemical composition by mass percent is: C 0.28 ~ 0.33%, Si 0.10 ~ 0.40%, Mn 1.30 ~ 2.00%, P≤0.025%, S≤0.025%, Al 0.020 ~ 0.060%, B 0.0010 ~ 0.0035%, V0.08 ~ 0.20%, Cr1.00 ~ 1.50%, Mo0.15 ~ 0.40%, Ni≤0.30%, Cu≤0.30%, Pb≤0.020%, Sn≤0.030%, other is Fe and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510491328.2A CN105002441A (en) | 2015-08-11 | 2015-08-11 | Steel for high-hardenability wear-resistant bucket teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510491328.2A CN105002441A (en) | 2015-08-11 | 2015-08-11 | Steel for high-hardenability wear-resistant bucket teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105002441A true CN105002441A (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510491328.2A Pending CN105002441A (en) | 2015-08-11 | 2015-08-11 | Steel for high-hardenability wear-resistant bucket teeth |
Country Status (1)
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943212A (en) * | 2012-12-09 | 2013-02-27 | 新余钢铁集团有限公司 | NM500 high-strength wear-resistant steel plate and heat treatment technique thereof |
| CN103194684A (en) * | 2013-03-28 | 2013-07-10 | 宝山钢铁股份有限公司 | Wear-resistant steel plate and manufacture method thereof |
| CN103205627A (en) * | 2013-03-28 | 2013-07-17 | 宝山钢铁股份有限公司 | Low-alloy high-performance wear-resistant steel plate and manufacturing method thereof |
| CN104685088A (en) * | 2012-09-19 | 2015-06-03 | 杰富意钢铁株式会社 | Wear-resistant steel plate having excellent low-temperature toughness and corrosion wear resistance |
-
2015
- 2015-08-11 CN CN201510491328.2A patent/CN105002441A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104685088A (en) * | 2012-09-19 | 2015-06-03 | 杰富意钢铁株式会社 | Wear-resistant steel plate having excellent low-temperature toughness and corrosion wear resistance |
| CN102943212A (en) * | 2012-12-09 | 2013-02-27 | 新余钢铁集团有限公司 | NM500 high-strength wear-resistant steel plate and heat treatment technique thereof |
| CN103194684A (en) * | 2013-03-28 | 2013-07-10 | 宝山钢铁股份有限公司 | Wear-resistant steel plate and manufacture method thereof |
| CN103205627A (en) * | 2013-03-28 | 2013-07-17 | 宝山钢铁股份有限公司 | Low-alloy high-performance wear-resistant steel plate and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王国承: "《钢中夹杂物尺寸控制理论与技术》", 31 January 2015, 冶金工业出版社 * |
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Application publication date: 20151028 |
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| RJ01 | Rejection of invention patent application after publication |