CN103898421B - A kind of manufacture method of grinder hammerhead - Google Patents
A kind of manufacture method of grinder hammerhead Download PDFInfo
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- CN103898421B CN103898421B CN201310574782.5A CN201310574782A CN103898421B CN 103898421 B CN103898421 B CN 103898421B CN 201310574782 A CN201310574782 A CN 201310574782A CN 103898421 B CN103898421 B CN 103898421B
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Abstract
The invention discloses a kind of grinder hammerhead and manufacture method thereof, its Chemical Composition comprises C:0.25-0.31%, Si:0.7-1.15%, Mn:1.4-1.8%, Ni:0.2-0.45%, Mo:0.2-0.3%, V:0.08-0.15%, Pb:0.06-0.15%, Zr:0.001-0.005%, Cu:0.01-0.03%, S :≤0.025%, P :≤0.025%, all the other are Fe, by weight percentage, the present invention is through process modification, the grinder hammerhead produced has high tenacity, shock-resistance, both there is higher hardness, wear resistance, improve duration of service and job security, there is superior working reliability.
Description
Technical field
The invention belongs to crusher technical field, be specifically related to a kind of grinder hammerhead and manufacture method thereof.
Background technology
Crusher is in mine, building materials, build the road, metallurgical, have a wide range of applications in the field of engineering technology such as traffic, at highway, the building stones of all size used in building are all formed through crusher in crushing by ratchel, wherein the loss of grinder hammerhead is directly connected to the cost of work, tup how prolongs life, it is the target that a lot of producer makes great efforts, now commercially the material of most of grinder hammerhead is ZG65Mn, its main chemical compositions is as follows: C:0.65%, Mn:l.1%, Si:0.44%, S:0.034%, P:0.036%, its mechanical property parameters is: tensile strength: 1145N/mm2, yield strength: 885N/mm2, unit elongation: 4%, intensity: HRC54, relative reduction in area: 17%, the grinder hammerhead wear resistance made of this steel is good, when receiving brute force attack, work hardening capacity is strong, but tensile strength is low, toughness is bad, easy damage.
Summary of the invention
Goal of the invention: the object of the invention is to for the deficiencies in the prior art, provides a kind of grinder hammerhead and manufacture method thereof, this grinder hammerhead have wear-resisting, intensity is high, good toughness, the features such as long service life.
Technical scheme: a kind of grinder hammerhead of the present invention, its Chemical Composition comprises C:0.25-0.31%, Si:0.7-1.15%, Mn:1.4-1.8%, Ni:0.2-0.45%, Mo:0.2-0.3%, V:0.08-0.15%, Pb:0.06-0.15%, Zr:0.001-0.005%, Cu:0.01-0.03%, S :≤0.025%, P :≤0.025%, all the other are Fe, by weight percentage.
Further, above-mentioned grinder hammerhead, Chemical Composition comprises C:0.28%, Si:0.9%, Mn:1.6%, Ni:0.35%, Mo:0.25%, V:0.12%, Pb:0.09%, Zr:0.003%, Cu:0.02%, S:0.02%, P:0.02%, all the other are Fe, by weight percentage.
The manufacture method of above-mentioned grinder hammerhead, comprises the following steps:
(1) steel alloy melting
With induction furnace molten alloy steel, the chemical composition of described steel alloy comprises: C:0.25-0.31%, Si:0.7-1.15%, Mn:1.4-1.8%, Ni:0.2-0.45%, Mo:0.2-0.3%, V:0.08-0.15%, Pb:0.06-0.15%, Zr:0.001-0.005%, Cu:0.01-0.03%, S :≤0.025%, P :≤0.025%, all the other are Fe, weight percent meter, smelting temperature is 1510-1560 DEG C, tapping is to refining furnace refining, refining in-furnace temperature is 1480-1530 DEG C, within 1-3 minute, rare earth material is added before casting, continuous casting alloy steel base, pouring temperature is 1440-1480 DEG C, water rear insulation 20-30 minute, water rear foundry goods slow cooling to room temperature,
(2) anneal
Alloy billet puts into stove with 80-100 DEG C/h heating rate to 880-940 DEG C of insulation 2-3 hour, and stove is as cold as 650-700 DEG C of insulation 3-5 hour, and stove is as cold as 400-500 DEG C of air cooling of coming out of the stove;
(3) hot rolling tup
By steel billet sawing, put into ring furnace and be heated to 1050-1200 DEG C, by hammer-shaped rolling, every time draft controls, at 15-25%, to be cooled to 240-300 DEG C, then puts into process furnace and be heated to 960-1000 DEG C, and finish to gauge formalizes, water-cooled to room temperature, flaw detection;
(4) Q-tempering
Tup quenches after machining, workpiece is put into stove and is heated rapidly to 940-1000 DEG C, insulation 3-4 hour, and shrend of coming out of the stove keeps water temperature to be no more than 45 DEG C, complete laggard stove tempering of quenching, and in-furnace temperature 180-230 DEG C of insulation takes out air cooling in 3-4 hour.
The present invention compared with prior art, its beneficial effect is: the present invention in order to overcome ZG65Mn steel make grinder hammerhead tensile strength low, toughness is bad, hold flimsy shortcoming, reduce C content, chemical component weight per-cent changes 0.25-0.31% into, easy formation low-carbon lath martensite, increase tup intensity and wear resistance, add the nickel of 0.2-0.45% to improve hardening capacity and austenitic stability, improve toughness and the impact strength of tup, what add the V of 0.08-0.15% can fining austenite grains, even material, improve yield strength and the tensile strength of steel, adding of 0.2-0.3%Mo can increase tup intensity and wear resistance, improve hardening capacity and the heat resistance of steel alloy, improve the impact toughness of steel, the Pb adding 0.06-0.15% can generate basic carbonate thin film lead, prevent tup internal oxidation, contribute to the hardness and the intensity that increase steel, the Zr adding 0.001-0.005% can improve intensity and the hardness of tup, improve hardness and the tension stress of tup, Pb and Zr merges the overall performance that can improve tup under the melting and thermal treatment process of science, both wear-resisting, hardness is high, toughness is good again, add the Cu of 0.01-0.03% intentionally, play Grain refinement, improve the shock resistance of tup, through process modification, the grinder hammerhead produced has high tenacity, shock-resistance, both there is higher hardness, wear resistance, improve duration of service and job security, there is superior working reliability.
The present invention controls the chemical composition of tup, melting, casting process and thermal treatment process by science, grinder hammerhead is made to be low-carbon lath martensite tissue from surface to inside, the toughness not only having high strength but also had, after testing, grinder hammerhead of the present invention is tensile strength >=1285N/mm2 at room temperature, yield strength >=1085N/mm2, unit elongation >=6.3%, Rockwell hardness >=HRC54, relative reduction in area >=22%, improves 2-3 duration of service doubly.
Embodiment
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
Embodiment 1: a kind of grinder hammerhead, its Chemical Composition comprises C:0.28%, Si:0.9%, Mn:1.6%, Ni:0.35%, Mo:0.25%, V:0.12%, Pb:0.09%, Zr:0.003%, Cu:0.02%, S:0.02%, P:0.02%, all the other are Fe, by weight percentage.
The manufacture method of above-mentioned grinder hammerhead, comprises the following steps:
(1) steel alloy melting
With induction furnace molten alloy steel, the chemical composition of described steel alloy comprises: C:0.28%, Si:0.9%, Mn:1.6%, Ni:0.35%, Mo:0.25%, V:0.12%, Pb:0.09%, Zr:0.003%, Cu:0.02%, S:0.02%, P:0.02%, all the other are Fe, by weight percentage, smelting temperature is 1540 DEG C, tapping is to refining furnace refining, and refining in-furnace temperature is 1500 DEG C, casts and adds rare earth material in first 2 minutes, continuous casting alloy steel base, pouring temperature is 1460 DEG C, has watered rear insulation 25 minutes, has watered rear foundry goods slow cooling to room temperature;
(2) anneal
Alloy billet puts into stove with 90 DEG C/h heating rate to 920 DEG C of insulations 2 hours, and stove is as cold as 680 DEG C of insulations 4 hours, and stove is as cold as 450 DEG C of air coolings of coming out of the stove;
(3) hot rolling tup
By steel billet sawing, put into ring furnace and be heated to 1150 DEG C, by hammer-shaped rolling, every time draft controls 20%, is cooled to 265 DEG C, then puts into process furnace and be heated to 980 DEG C, and finish to gauge formalizes, water-cooled to room temperature, flaw detection;
(4) Q-tempering
Tup quenches after machining, workpiece is put into stove with 100 DEG C/h heating rate to 980 DEG C, is incubated 3 hours, shrend of coming out of the stove, and keeps water temperature 40 DEG C, complete laggard stove tempering of quenching, and in-furnace temperature 200 DEG C insulation takes out air cooling in 3 hours.
The mechanical property of the tup described in the present embodiment is: tensile strength: 1355N/mm2, yield strength: 1095N/mm2, unit elongation: 8%, Rockwell hardness: HRC55, and relative reduction in area: 23% improves 2.6 times duration of service.
Embodiment 2, a kind of grinder hammerhead, its Chemical Composition comprises C:0.25%, Si:0.7%, Mn:1.4%, Ni:0.2%, Mo:0.2%, V:0.08%, Pb:0.06%, Zr:0.001%, Cu:0.01%, S:0.015%, P:0.015%, all the other are Fe, by weight percentage.
The manufacture method of above-mentioned grinder hammerhead, comprises the following steps:
(1) steel alloy melting
With induction furnace molten alloy steel, the chemical composition of described steel alloy comprises: C:0.25%, Si:0.7%, Mn:1.4%, Ni:0.2%, Mo:0.2%, V:0.08%, Pb:0.06%, Zr:0.001%, Cu:0.01%, S:0.015%, P:0.015%, all the other are Fe, by weight percentage, smelting temperature is 1510 DEG C, tapping is to refining furnace refining, and refining in-furnace temperature is 1480 DEG C, casts and adds rare earth material in first 1 minute, continuous casting alloy steel base, pouring temperature is 1440 DEG C, has watered rear insulation 20 minutes, has watered rear foundry goods slow cooling to room temperature;
(2) anneal
Alloy billet puts into stove with 80 DEG C/h heating rate to 880 DEG C of insulations 2 hours, and stove is as cold as 650 DEG C of insulations 3 hours, and stove is as cold as 400 DEG C of air coolings of coming out of the stove;
(3) hot rolling tup
By steel billet sawing, put into ring furnace and be heated to 1050 DEG C, by hammer-shaped rolling, every time draft controls 15%, is cooled to 240 DEG C, then puts into process furnace and be heated to 960 DEG C, and finish to gauge formalizes, water-cooled to room temperature, flaw detection;
(4) Q-tempering
Tup quenches after machining, workpiece is put into stove with 80 DEG C/h heating rate to 940 DEG C, is incubated 3 hours, shrend of coming out of the stove, and keeps water temperature 35 DEG C, complete laggard stove tempering of quenching, and in-furnace temperature 180 DEG C insulation takes out air cooling in 3 hours.
The mechanical property of the tup described in the present embodiment is: tensile strength: 1320N/mm2, yield strength: 1120N/mm2, unit elongation: 9%, Rockwell hardness: HRC54, and relative reduction in area: 26% improves 2.1 times duration of service.
Embodiment 3, a kind of grinder hammerhead, its Chemical Composition comprises C:0.31%, Si:1.15%, Mn:1.8%, Ni:0.45%, Mo:0.3%, V:0.15%, Pb:0.15%, Zr:0.005%, Cu:0.03%, S:0.025%, P:0.025%, all the other are Fe, by weight percentage.
The manufacture method of above-mentioned grinder hammerhead, comprises the following steps:
(1) steel alloy melting
With induction furnace molten alloy steel, the chemical composition of described steel alloy comprises: C:0.31%, Si:1.15%, Mn:1.8%, Ni:0.45%, Mo:0.3%, V:0.15%, Pb:0.15%, Zr:0.005%, Cu:0.03%, S:0.025%, P:0.025%, all the other are Fe, by weight percentage, smelting temperature is 1560 DEG C, tapping is to refining furnace refining, and refining in-furnace temperature is 1530 DEG C, casts and adds rare earth material in first 3 minutes, continuous casting alloy steel base, pouring temperature is 1480 DEG C, has watered rear insulation 30 minutes, has watered rear foundry goods slow cooling to room temperature;
(2) anneal
Alloy billet puts into stove with 100 DEG C/h heating rate to 940 DEG C of insulations 3 hours, and stove is as cold as 700 DEG C of insulations 5 hours, and stove is as cold as 500 DEG C of air coolings of coming out of the stove;
(3) hot rolling tup
By steel billet sawing, put into ring furnace and be heated to 1200 DEG C, by hammer-shaped rolling, every time draft controls 25%, is cooled to 300 DEG C, then puts into process furnace and be heated to 1000 DEG C, and finish to gauge formalizes, water-cooled to room temperature, flaw detection;
(4) Q-tempering
Tup quenches after machining, workpiece is put into stove with 100 DEG C/h heating rate to 1000 DEG C, is incubated 4 hours, shrend of coming out of the stove, and keeps water temperature 45 DEG C, complete laggard stove tempering of quenching, and in-furnace temperature 230 DEG C insulation takes out air cooling in 4 hours.
The mechanical property of the tup described in the present embodiment is: tensile strength: 1285N/mm2, yield strength: 1085N/mm2, unit elongation: 6.3%, Rockwell hardness: HRC54, and relative reduction in area: 22% improves 3 times duration of service.
As mentioned above, although represented with reference to specific preferred embodiment and described the present invention, it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite not departing from claims definition, various change can be made in the form and details to it.
Claims (1)
1. a manufacture method for grinder hammerhead, is characterized in that: comprise the following steps:
(1) steel alloy melting
With induction furnace molten alloy steel, the chemical composition of described steel alloy comprises: C:0.25-0.31%, Si:0.7-1.15%, Mn:1.4-1.8%, Ni:0.2-0.45%, Mo:0.2-0.3%, V:0.08-0.15%, Pb:0.06-0.15%, Zr:0.001-0.005%, Cu:0.01-0.03%, S :≤0.025%, P :≤0.025%, all the other are Fe, by weight percentage, also add and have rare earth material; Smelting temperature is 1510-1560 DEG C, and tapping is to refining furnace refining, and refining in-furnace temperature is 1480-1530 DEG C, within 1-3 minute, add rare earth material, continuous casting alloy steel base before casting, pouring temperature is 1440-1480 DEG C, water rear insulation 20-30 minute, water rear foundry goods slow cooling to room temperature;
(2) anneal
Alloy billet puts into stove with 80-100 DEG C/h heating rate to 880-940 DEG C of insulation 2-3 hour, and stove is as cold as 650-700 DEG C of insulation 3-5 hour, and stove is as cold as 400-500 DEG C of air cooling of coming out of the stove;
(3) hot rolling tup
By steel billet sawing, put into ring furnace and be heated to 1050-1200 DEG C, by hammer-shaped rolling, every time draft controls, at 15-25%, to be cooled to 240-300 DEG C, then puts into process furnace and be heated to 960-1000 DEG C, and finish to gauge formalizes, water-cooled to room temperature, flaw detection;
(4) Q-tempering
Tup quenches after machining, workpiece is put into stove and is heated rapidly to 940-1000 DEG C, insulation 3-4 hour, and shrend of coming out of the stove keeps water temperature to be no more than 45 DEG C, complete laggard stove tempering of quenching, and in-furnace temperature 180-230 DEG C of insulation takes out air cooling in 3-4 hour.
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| CN201310574782.5A CN103898421B (en) | 2013-11-15 | 2013-11-15 | A kind of manufacture method of grinder hammerhead |
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| CN201310574782.5A CN103898421B (en) | 2013-11-15 | 2013-11-15 | A kind of manufacture method of grinder hammerhead |
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| CN105039655B (en) * | 2015-07-31 | 2017-06-16 | 共享铸钢有限公司 | A kind of heat treatment method suitable for gyratory crusher casting |
| CN106521310B (en) * | 2016-10-27 | 2017-12-12 | 马钢(集团)控股有限公司 | A kind of quartering hammer piston rod steel and its Technology for Heating Processing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293716A (en) * | 1999-01-28 | 2001-05-02 | 住友金属工业株式会社 | Machine structural steel product |
| CN1714159A (en) * | 2002-11-19 | 2005-12-28 | 工业钢克鲁梭公司 | Method for making an abrasion resistant steel plate and plate obtained |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293716A (en) * | 1999-01-28 | 2001-05-02 | 住友金属工业株式会社 | Machine structural steel product |
| CN1714159A (en) * | 2002-11-19 | 2005-12-28 | 工业钢克鲁梭公司 | Method for making an abrasion resistant steel plate and plate obtained |
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Address after: 210093 Nanjing University Science Park, 22 Hankou Road, Gulou District, Nanjing City, Jiangsu Province Patentee after: Southeast University Address before: No. 99, Linghu Avenue, Wuxi, Jiangsu Province, Jiangsu Patentee before: Southeast University |
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Granted publication date: 20160406 Termination date: 20191115 |