CN108034894A - A kind of lost foam casting highly wear-resisting alloy steel power shovel tooth and production technology - Google Patents
A kind of lost foam casting highly wear-resisting alloy steel power shovel tooth and production technology Download PDFInfo
- Publication number
- CN108034894A CN108034894A CN201711486569.3A CN201711486569A CN108034894A CN 108034894 A CN108034894 A CN 108034894A CN 201711486569 A CN201711486569 A CN 201711486569A CN 108034894 A CN108034894 A CN 108034894A
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- CN
- China
- Prior art keywords
- power shovel
- alloy steel
- shovel tooth
- highly wear
- resisting alloy
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/78—Combined heat-treatments not provided for above
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
Abstract
The present invention provides a kind of lost foam casting highly wear-resisting alloy steel power shovel tooth and production technology, the materials chemistry constituent mass percentage：C 0.31 0.38, Si 0.55 0.75, Mn 1.09 1.25, Cr 2.55 2.80, Mo 0.55 0.70, Ni 0.16 0.25, P≤0.03, S≤0.03, remaining is iron and inevitable impurity.Manufacture method using the steel alloy power shovel tooth of above-mentioned alloy steel material includes：Smelting temperature is 1580~1600 DEG C, and tapping temperature is 1480~1500 DEG C, and fusing metal is poured into EPS die for molding under the state of vacuumizing with 1400 DEG C~1450 DEG C.Heat treatment process includes：There is very higher toughness and hardness, wear-resisting property to improve 1.51 1.85 times than ZGMn13Cr2 for 880 DEG C of 900 DEG C of normalized treatments, 860 DEG C of 870 DEG C of water quenching and oil-coolings, 300 DEG C of 320 DEG C of tempers, the highly wear-resisting alloy steel power shovel tooth of acquisition.
Description
Technical field
The invention belongs to wear-resisting alloy steel cast member technical field, more particularly to a kind of highly wear-resisting alloy steel power shovel tooth and its
Production technology.
Background technology
Power shovel is the main loading machine of opencut, and power shovel tooth is its main stress wearing terrain, and teeth is in operation
During except bearing the impact and abrasion of material, sleet sky is also subject to environmental corrosion to act on, operating condition very severe.It is common
Power shovel teeth material be potassium steel and low-alloy steel.High Manganese Steel Electric Shovel tooth thin hardened layer is less than 1mm, and when use is insufficiently resistant to
Scuffing and ditch dug with a plow abrasion of the sharp ore to material surface, therefore make High Manganese Steel Electric Shovel tooth service life relatively low, add maintenance expense
With and material consumption.Domestic patent ZL2004100986765 discloses a kind of complex alloy cast-steel, its main chemical compositions weight
Percentage：C 0.22-0.45, Si≤2.0, Mn≤2.0, Mo 0.2-0.5, after heat treatment toughness of material is higher, but because of surface
Hardness is low, causes wear-resisting property not high.Domestic patent ZL2012100973064 discloses a kind of casting of bimetallic wear-resistant bucket teeth
Method, its main chemical compositions percentage by weight of tip portions：C 0.4-0.6, Si 1.5-2.0, Mn 1.2-2.0, Cr 1.5-
2.5.Its main chemical compositions percentage by weight of root portions：C 0.27-0.33, Si 0.5-0.8, Mn 0.8-1.2, Cr
1.5-2.0.Tip portions hardness≤53HRC after heat treatment, part hardness≤30HRC after tooth, wearability and toughness have all carried
Height, but since casting technique is complicated, easily occurs being layered between metal after heat treatment, cause cost excessive, it is impossible to be widely popularized
Using.
The content of the invention
The present invention provides a kind of highly wear-resisting alloy steel power shovel tooth and its production technology, there is higher hardness, it is wear-resisting improving
While property, impact flexibility is also significantly lifted, and meets wearability and the corrosion resistance requirement of outdoor loading machine, is reduced
The frequency that power shovel tooth scene is replaced, reduces labor strength.
In order to solve the above technical problems, the present invention provides a kind of lost foam casting highly wear-resisting alloy steel power shovel tooth, it is changed
Learning weight percentages of components is：C 0.31-0.38, Si 0.55-0.75, Mn 1.09-1.25, Cr 2.55-2.80, Mo
0.55-0.70, Ni 0.16-0.25, P≤0.03, S≤0.03, remaining is iron and inevitable impurity.
A kind of production technology of lost foam casting highly wear-resisting alloy steel power shovel tooth of the present invention, including following technique stream
Journey, including：Dispensing, melting, cast, smelting temperature are 1580~1600 DEG C, and tapping temperature is 1480~1500 DEG C, with 1400
DEG C~1450 DEG C by fusing metal be poured under the state of vacuumizing in EPS moulds.
As the preferable technical solution of the present invention, the heat treatment process of the highly wear-resisting alloy steel power shovel tooth
Including：880 DEG C of -900 DEG C of insulation 4h are warming up to, are come out of the stove air-cooled, 860 DEG C of -870 DEG C of insulation 4h is warming up to, carries out water quenching and oil-cooling, rise
Temperature is come out of the stove air-cooled to 300 DEG C of -320 DEG C of insulation 6h.
The one or more technical solutions provided in the embodiment of the present application, have at least the following technical effects or advantages：
With higher hardness, while wearability is improved, impact flexibility is also significantly lifted, and meets outdoor loading machine
Wearability and the corrosion resistance requirement of tool, reduce the frequency that power shovel tooth scene is replaced, reduce labor strength.
Embodiment
A kind of lost foam casting highly wear-resisting alloy steel power shovel tooth described in the present embodiment, its chemical constituent percentage by weight
For：C 0.31-0.38, Si 0.55-0.75, Mn 1.09-1.25, Cr 2.55-2.80, Mo 0.55-0.70, Ni 0.16-
0.25, P≤0.03, S≤0.03, remaining is iron and inevitable impurity.
A kind of production technology of lost foam casting highly wear-resisting alloy steel power shovel tooth described in the present embodiment, including following technique
Flow, including：Dispensing, melting, cast, smelting temperature are 1580~1600 DEG C, and tapping temperature is 1480~1500 DEG C, with
1400 DEG C~1450 DEG C are poured into fusing metal under the state of vacuumizing in EPS moulds.
Wherein, in the present embodiment, the heat treatment process of the highly wear-resisting alloy steel power shovel tooth includes：It is warming up to
880 DEG C -900 DEG C insulation 4h, come out of the stove air-cooled, be warming up to 860 DEG C -870 DEG C insulation 4h, carry out water quenching and oil-cooling, be warming up to 300 DEG C -
320 DEG C of insulation 6h, come out of the stove air-cooled.
Embodiment 1：
The mass percent of detection component is after casting：C 0.31, Si 0.55, Mn 1.09, Mo 0.55, Cr 2.55,
Ni 0.16, P≤0.015, S≤0.017；Remaining is iron and inevitable impurity.
Heat treatment process includes：It is warming up to 890 DEG C and keeps the temperature 4h, it is air-cooled；It is warming up to 860 DEG C of insulation 4h；Water quenching and oil-cooling；Rise again
Temperature keeps the temperature 6h to 300 DEG C, air-cooled.
Embodiment 2：
The mass percent of detection component is after casting：C 0.32, Si 0.62, Mn 1.12, Mo 0.57, Cr 2.65,
Ni 0.17, P≤0.017, S≤0.019；Remaining is iron and inevitable impurity.
Heat treatment process includes：It is warming up to 890 DEG C and keeps the temperature 4h, it is air-cooled；It is warming up to 860 DEG C of insulation 4h, water quenching and oil-cooling；Rise again
Temperature keeps the temperature 6h to 300 DEG C, air-cooled.
Embodiment 3：
The mass percent of detection component is after casting：C 0.34, Si 0.7, Mn 1.17, Mo 0.68, Cr 2.71,
Ni 0.23, P≤0.013, S≤0.016；Remaining is iron and inevitable impurity.
Heat treatment process includes：It is warming up to 900 DEG C and keeps the temperature 4h, it is air-cooled；It is warming up to 870 DEG C of insulation 4h, water quenching and oil-cooling；Rise again
Temperature keeps the temperature 6h to 320 DEG C, air-cooled.
Embodiment 4：
The mass percent of detection component is after casting：C 0.38, Si 0.75, Mn 1.25, Mo 0.70, Cr 2.80,
Ni 0.25, P≤0.021, S≤0.017；Remaining is iron and inevitable impurity.
Heat treatment process includes：It is warming up to 900 DEG C and keeps the temperature 4h, it is air-cooled；It is warming up to 870 DEG C of insulation 4h, water quenching and oil-cooling；Rise again
Temperature keeps the temperature 6h to 320 DEG C, air-cooled.
Contrast wear test uses M-2000 friction wear testing machines, load 200N, test period 2h, by national standard GB/
T12444-2006 carries out sliding wear testing, and wear-resisting property is calculated using Mn13Cr2 materials as radix 1.The high abrasion of the present invention
The wearability of steel alloy power shovel tooth is 1.51-1.85 times of Mn13Cr2 power shovel teeth, while has preferable corrosion resistance, its
Middle embodiment 3 has excellent comprehensive performance.Material of the present invention is suitable for all kinds of mining machineries, engineering machinery, coal mine machinery
The power shovel tooth of wear parts, especially opencut operation, has broad application prospects.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present invention
Any simple modification, equivalent change and modification made to above example, in the range of still falling within technical solution of the present invention.
Claims (3)
- A kind of 1. lost foam casting highly wear-resisting alloy steel power shovel tooth, it is characterised in that：Its chemical constituent percentage by weight is：C 0.31-0.38, Si 0.55-0.75, Mn 1.09-1.25, Cr 2.55-2.80, Mo 0.55-0.70, Ni 0.16-0.25, P ≤ 0.03, S≤0.03, remaining is iron and inevitable impurity.
- A kind of 2. production technology of lost foam casting highly wear-resisting alloy steel power shovel tooth, it is characterised in that including following technological process, Including：Dispensing, melting, cast, smelting temperature be 1580~1600 DEG C, tapping temperature be 1480~1500 DEG C, with 1400 DEG C~ 1450 DEG C are poured into fusing metal under the state of vacuumizing in EPS moulds.
- 3. a kind of production technology of lost foam casting highly wear-resisting alloy steel power shovel tooth according to claim 2, its feature exist In the heat treatment process of the highly wear-resisting alloy steel power shovel tooth includes：It is warming up to 880 DEG C of -900 DEG C of insulation 4h, sky of coming out of the stove It is cold, 860 DEG C of -870 DEG C of insulation 4h are warming up to, carry out water quenching and oil-cooling, 300 DEG C of -320 DEG C of insulation 6h is warming up to, comes out of the stove air-cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711486569.3A CN108034894A (en) | 2017-12-29 | 2017-12-29 | A kind of lost foam casting highly wear-resisting alloy steel power shovel tooth and production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711486569.3A CN108034894A (en) | 2017-12-29 | 2017-12-29 | A kind of lost foam casting highly wear-resisting alloy steel power shovel tooth and production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108034894A true CN108034894A (en) | 2018-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711486569.3A Pending CN108034894A (en) | 2017-12-29 | 2017-12-29 | A kind of lost foam casting highly wear-resisting alloy steel power shovel tooth and production technology |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1014968A1 (en) * | 1981-08-31 | 1983-04-30 | Предприятие П/Я А-3700 | Steel |
| JPS5964751A (en) * | 1982-10-04 | 1984-04-12 | Kawasaki Steel Corp | Horizontal roll for blooming and rolling |
| SU1601188A1 (en) * | 1988-11-21 | 1990-10-23 | Предприятие П/Я А-1125 | Die steel |
| CN103614652A (en) * | 2013-12-06 | 2014-03-05 | 河南立德金属材料科技有限公司 | Silicon-manganese-chrome-molybdenum low-alloy steel excavator bucket tooth and production technique thereof |
| CN103882326A (en) * | 2013-11-13 | 2014-06-25 | 东南大学 | High-strength wear-resistant shovel teeth of loading machine and production technology thereof |
| CN105369143A (en) * | 2015-10-28 | 2016-03-02 | 安徽省三方新材料科技有限公司 | Chrome, molybdenum and nickel alloy steel shovel tooth and preparing method thereof |
-
2017
- 2017-12-29 CN CN201711486569.3A patent/CN108034894A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1014968A1 (en) * | 1981-08-31 | 1983-04-30 | Предприятие П/Я А-3700 | Steel |
| JPS5964751A (en) * | 1982-10-04 | 1984-04-12 | Kawasaki Steel Corp | Horizontal roll for blooming and rolling |
| SU1601188A1 (en) * | 1988-11-21 | 1990-10-23 | Предприятие П/Я А-1125 | Die steel |
| CN103882326A (en) * | 2013-11-13 | 2014-06-25 | 东南大学 | High-strength wear-resistant shovel teeth of loading machine and production technology thereof |
| CN103614652A (en) * | 2013-12-06 | 2014-03-05 | 河南立德金属材料科技有限公司 | Silicon-manganese-chrome-molybdenum low-alloy steel excavator bucket tooth and production technique thereof |
| CN105369143A (en) * | 2015-10-28 | 2016-03-02 | 安徽省三方新材料科技有限公司 | Chrome, molybdenum and nickel alloy steel shovel tooth and preparing method thereof |
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Application publication date: 20180515 |