CN105349898A - Special low-alloy abrasion-resistant bucket tooth for mines and manufacturing method of special low-alloy abrasion-resistant shovel tooth for mines - Google Patents
Special low-alloy abrasion-resistant bucket tooth for mines and manufacturing method of special low-alloy abrasion-resistant shovel tooth for mines Download PDFInfo
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- CN105349898A CN105349898A CN201510726481.9A CN201510726481A CN105349898A CN 105349898 A CN105349898 A CN 105349898A CN 201510726481 A CN201510726481 A CN 201510726481A CN 105349898 A CN105349898 A CN 105349898A
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Abstract
The invention provides a special low-alloy abrasion-resistant shovel tooth for mines and a manufacturing method of the special low-alloy abrasion-resistant shovel tooth for mines. The shovel tooth is prepared from, by weight percentage, 0.21-0.52% of C, 0.80-1.20% of Si, 1.12-1.65% of Mn, 1.10-1.52% of Cr, 0.25-0.35% of Mo, 0.05-0.08% of Ti, 0.10-0.12% of V, 0.001-0.005% of B, 0.11-0.23% of Re, not larger than 0.04% of S, not larger than 0.04% of P and the balance Fe. The shovel tooth is good in mechanical property, high in impact resistance, abrasion resistance and tenacity, long in service life, low in cost, simple in manufacturing technology and suitable for large-scale production.
Description
Technical field
The present invention relates to high-abrasive material technical field, be specifically related to the special low-alloy abrasion-proof teeth in a kind of mine and manufacture method thereof.
Background technology
Wearing and tearing are the common failure modes of engineering goods, bring huge financial loss every year to society.Teeth is one of main wear part on excavator, and consumption is very large, and has a considerable amount of teeth to need import every year.The actual working conditions very severe of teeth, being not only worn effect when contacting material, also will bearing certain shock load.
Tradition dipper tooth material is high mangaenese steel (Mn13), the wear resistance of this steel is the work hardening acquisition by producing under the high impact forces effect in use procedure, the wear resistance of material itself is undesirable, starting material and thermal treatment cost compare high, melting technology is complicated; And the yield strength of high mangaenese steel is lower, easily occurs bending and deformation under impact, extruding condition, cause brittle cracking, built-up type teeth sometimes also can be caused to dismantle difficulty.Therefore, develop the teeth that a kind of over-all properties is stablized, wear resisting property is strong, significant.
Summary of the invention
(1) technical problem solved
For the deficiency that above-mentioned prior art exists, the invention provides the special low-alloy abrasion-proof teeth in a kind of mine and manufacture method thereof, this teeth good mechanical property, there is high impact-resistant power, wear resistance and high tenacity, long service life, and with low cost, manufacturing process is simple, is applicable to producing in enormous quantities.
(2) technical scheme
For realizing above object, the present invention is achieved by the following technical programs:
A kind of special low-alloy abrasion-proof teeth in mine and manufacture method thereof, in this teeth, the weight percent of each chemical composition is: C:0.21 ~ 0.52%, Si:0.80 ~ 1.20%, Mn:1.12 ~ 1.65%, Cr:1.10 ~ 1.52%, Mo:0.25 ~ 0.35%, Ti:0.05 ~ 0.08%, V:0.10 ~ 0.12%, B:0.001 ~ 0.005%, Re:0.11 ~ 0.23%, S :≤0.04%, P :≤0.04%, surplus is Fe.
Preferably, in the special low-alloy abrasion-proof in described mine teeth, the weight percent of each chemical composition is: C:0.38%, Si:1.00%, Mn:1.37%, Cr:1.32%, Mo:0.30%, Ti:0.06%, V:0.11%, B:0.003%, Re:0.16%, S :≤0.04%, P :≤0.04%, surplus is Fe.
Preferably, the manufacture method of the special low-alloy abrasion-proof teeth in described mine, comprises the following steps:
(1) melting: according to above-mentioned each chemical component weight proportioning, raw material is joined in medium-frequency induction furnace and carry out melting, smelting temperature is 1650 ~ 1670 DEG C, in fusion process, chemical analysis is carried out in sampling, control each chemical composition in specialized range, 3 ~ 5min before molten steel is come out of the stove, adds ferromanganese by 0.2 ~ 0.3 kilogram, molten steel per ton and ferrosilicon carries out pre-deoxidation, finally adds 0.6 ~ 0.8 kilogram of fine aluminium by molten steel per ton and carries out final deoxygenation;
(2) pour into a mould: can molten steel be gone out after aluminium final deoxygenation, pour into a mould when temperature is 1560 ~ 1620 DEG C, certain speed should be controlled during cast and be beneficial to waste gas effusion, and should water full continuously, pour into teeth test block.
(3) thermal treatment: first adopt Rx3-45-9 box electric furnace to carry out normalizing, temperature is 970 ~ 990 DEG C, insulation 1 ~ 2h, air cooling; Rx3-45-9 box electric furnace is adopted to carry out quench treatment, temperature 900 ~ 930 DEG C subsequently, insulation 2 ~ 4h after quenching, water-cooled; Finally adopt RJ2-55-6 well-type electric furnace to carry out tempering, temperature 220 ~ 250 DEG C, be incubated 2 ~ 4h after tempering, air cooling.
(4) cut sample from teeth test block, on grinding machine, be ground to surface subsequently reach smoothness requirements.
Preferably, step (3) described pouring speed initial stage and later stage are 40 ~ 80kg/min, and mid-term is 100kg/min.
(3) beneficial effect
1, the invention provides the special low-alloy abrasion-proof teeth in a kind of mine and manufacture method thereof, main based on soft steel, with Cr, Mo, Ti, V for main alloy element, be equipped with certain thermal treatment process, thus obtain the comprehensive mechanical property of hardness and toughness no-float.
2, the invention provides the special low-alloy abrasion-proof teeth in a kind of mine and manufacture method thereof, adding of rare earth element (Re) can cleaning molten steel, crystal grain thinning and improve the effect of inclusion morphology, distribution; Boron (B) add the crystal boundary that can purify steel, have dispersion-strengthened action again, can thinning microstructure, significantly improve the wear resisting property of teeth.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
The special low-alloy abrasion-proof teeth in the present embodiment mine, in this teeth, the weight percent of each chemical composition is: C:0.21%, Si:0.80%, Mn:1.12%, Cr:1.10%, Mo:0.25%, Ti:0.05%, V:0.10%, B:0.001%, Re:0.11%, S :≤0.04%, P :≤0.04%, surplus is Fe.
According to the weight percent of chemical composition each in the present embodiment, preparation method comprises the following steps:
(1) melting: according to above-mentioned each chemical component weight proportioning, raw material is joined in medium-frequency induction furnace and carry out melting, smelting temperature is 1650 DEG C, in fusion process, chemical analysis is carried out in sampling, control each chemical composition in specialized range, 4min before molten steel is come out of the stove, adds ferromanganese by 0.2 kilogram, molten steel per ton and ferrosilicon carries out pre-deoxidation, finally adds 0.6 kilogram of fine aluminium by molten steel per ton and carries out final deoxygenation;
(2) pour into a mould: can molten steel be gone out after aluminium final deoxygenation, pour into a mould when temperature is 1560 DEG C, certain speed should be controlled during cast and be beneficial to waste gas effusion, and should water full continuously, pour into teeth test block.
(3) thermal treatment: first adopt Rx3-45-9 box electric furnace to carry out normalizing, temperature is 970 DEG C, insulation 1h, air cooling; Adopt Rx3-45-9 box electric furnace to carry out quench treatment subsequently, temperature 900 DEG C, is incubated 2h after quenching, water-cooled; Finally adopt RJ2-55-6 well-type electric furnace to carry out tempering, temperature 230 DEG C, is incubated 2h after tempering, air cooling.
(4) cut sample from teeth test block, on grinding machine, be ground to surface subsequently reach smoothness requirements.
Embodiment 2:
The special low-alloy abrasion-proof teeth in the present embodiment mine, in this teeth, the weight percent of each chemical composition is: C:0.38%, Si:1.00%, Mn:1.37%, Cr:1.32%, Mo:0.30%, Ti:0.06%, V:0.11%, B:0.003%, Re:0.16%, S :≤0.04%, P :≤0.04%, surplus is Fe.
According to the weight percent of chemical composition each in the present embodiment, preparation method comprises the following steps:
(1) melting: according to above-mentioned each chemical component weight proportioning, raw material is joined in medium-frequency induction furnace and carry out melting, smelting temperature is 1660 DEG C, in fusion process, chemical analysis is carried out in sampling, control each chemical composition in specialized range, 4min before molten steel is come out of the stove, adds ferromanganese by 0.25 kilogram, molten steel per ton and ferrosilicon carries out pre-deoxidation, finally adds 0.7 kilogram of fine aluminium by molten steel per ton and carries out final deoxygenation;
(2) pour into a mould: can molten steel be gone out after aluminium final deoxygenation, pour into a mould when temperature is 1590 DEG C, certain speed should be controlled during cast and be beneficial to waste gas effusion, and should water full continuously, pour into teeth test block.
(3) thermal treatment: first adopt Rx3-45-9 box electric furnace to carry out normalizing, temperature is 980 DEG C, insulation 1.5h, air cooling; Adopt Rx3-45-9 box electric furnace to carry out quench treatment subsequently, temperature 920 DEG C, is incubated 3h after quenching, water-cooled; Finally adopt RJ2-55-6 well-type electric furnace to carry out tempering, temperature 230 DEG C, is incubated 3h after tempering, air cooling.
(4) cut sample from teeth test block, on grinding machine, be ground to surface subsequently reach smoothness requirements.
Embodiment 3:
The special low-alloy abrasion-proof teeth in the present embodiment mine, in this teeth, the weight percent of each chemical composition is: C:0.52%, Si:1.20%, Mn:1.65%, Cr:1.52%, Mo:0.35%, Ti:0.08%, V:0.12%, B:0.005%, Re:0.23%, S :≤0.04%, P :≤0.04%, surplus is Fe.
According to the weight percent of chemical composition each in the present embodiment, preparation method comprises the following steps:
(1) melting: according to above-mentioned each chemical component weight proportioning, raw material is joined in medium-frequency induction furnace and carry out melting, smelting temperature is 1670 DEG C, in fusion process, chemical analysis is carried out in sampling, control each chemical composition in specialized range, 5min before molten steel is come out of the stove, adds ferromanganese by 0.3 kilogram, molten steel per ton and ferrosilicon carries out pre-deoxidation, finally adds 0.8 kilogram of fine aluminium by molten steel per ton and carries out final deoxygenation;
(2) pour into a mould: can molten steel be gone out after aluminium final deoxygenation, pour into a mould when temperature is 1620 DEG C, certain speed should be controlled during cast and be beneficial to waste gas effusion, and should water full continuously, pour into teeth test block.
(3) thermal treatment: first adopt Rx3-45-9 box electric furnace to carry out normalizing, temperature is 990 DEG C, protects 2h, air cooling; Adopt Rx3-45-9 box electric furnace to carry out quench treatment subsequently, temperature 930 DEG C, is incubated 4h after quenching, water-cooled; Finally adopt RJ2-55-6 well-type electric furnace to carry out tempering, temperature 250 DEG C, is incubated 4h after tempering, air cooling.
(4) cut sample from teeth test block, on grinding machine, be ground to surface subsequently reach smoothness requirements.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit, although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. the special low-alloy abrasion-proof teeth in mine and a manufacture method thereof, is characterized in that, in this teeth, the weight percent of each chemical composition is: C:0.21 ~ 0.52%, Si:0.80 ~ 1.20%, Mn:1.12 ~ 1.65%, Cr:1.10 ~ 1.52%, Mo:0.25 ~ 0.35%, Ti:0.05 ~ 0.08%, V:0.10 ~ 0.12%, B:0.001 ~ 0.005%, Re:0.11 ~ 0.23%, S :≤0.04%, P :≤0.04%, surplus is Fe.
2. the special low-alloy abrasion-proof teeth in mine according to claim 1, is characterized in that, in this teeth, the weight percent of each chemical composition is: C:0.38%, Si:1.00%, Mn:1.37%, Cr:1.32%, Mo:0.30%, Ti:0.06%, V:0.11%, B:0.003%, Re:0.16%, S :≤0.04%, P :≤0.04%, surplus is Fe.
3. the manufacture method of the special low-alloy abrasion-proof teeth in mine according to claim 1 and 2, is characterized in that, comprise the following steps:
(1) melting: according to above-mentioned each chemical component weight proportioning, raw material is joined in medium-frequency induction furnace and carry out melting, smelting temperature is 1650 ~ 1670 DEG C, in fusion process, chemical analysis is carried out in sampling, control each chemical composition in specialized range, 3 ~ 5min before molten steel is come out of the stove, adds ferromanganese by 0.2 ~ 0.3 kilogram, molten steel per ton and ferrosilicon carries out pre-deoxidation, finally adds 0.6 ~ 0.8 kilogram of fine aluminium by molten steel per ton and carries out final deoxygenation;
(2) pour into a mould: can molten steel be gone out after aluminium final deoxygenation, pour into a mould when temperature is 1560 ~ 1620 DEG C, certain speed should be controlled during cast and be beneficial to waste gas effusion, and should water full continuously, pour into teeth test block.
(3) thermal treatment: first adopt Rx3-45-9 box electric furnace to carry out normalizing, temperature is 970 ~ 990 DEG C, insulation 1 ~ 2h, air cooling; Rx3-45-9 box electric furnace is adopted to carry out quench treatment, temperature 900 ~ 930 DEG C subsequently, insulation 2 ~ 4h after quenching, water-cooled; Finally adopt RJ2-55-6 well-type electric furnace to carry out tempering, temperature 220 ~ 250 DEG C, be incubated 2 ~ 4h after tempering, air cooling.
(4) cut sample from teeth test block, on grinding machine, be ground to surface subsequently reach smoothness requirements.
4. the manufacture method of the special low-alloy abrasion-proof teeth in mine according to claim 3, is characterized in that, described pouring speed initial stage and later stage are 40 ~ 80kg/min, and mid-term is 100kg/min.
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| CN201510726481.9A CN105349898B (en) | 2015-10-28 | 2015-10-28 | Manufacturing method of special low-alloy abrasion-resistant bucket tooth for mines |
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| CN201510726481.9A CN105349898B (en) | 2015-10-28 | 2015-10-28 | Manufacturing method of special low-alloy abrasion-resistant bucket tooth for mines |
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| CN105349898B CN105349898B (en) | 2017-05-10 |
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Citations (7)
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| US20030026723A1 (en) * | 2001-07-12 | 2003-02-06 | Takemori Takayama | High-toughness wear-resistant steel |
| JP2008144270A (en) * | 2006-11-13 | 2008-06-26 | Jfe Steel Kk | Non-heat-treated steel for machine structure excellent in fatigue property and toughness, its manufacturing method, component for machine structure, and its manufacturing method |
| CN101397632A (en) * | 2008-10-31 | 2009-04-01 | 郭玉宝 | Multielement low-alloy water quenching abrasion resistant steel |
| KR20120053616A (en) * | 2010-11-18 | 2012-05-29 | 두산인프라코어 주식회사 | Bucket tooth for construction equipment with enhanced abrasion resistance and impact resistance |
| CN102758067A (en) * | 2012-06-29 | 2012-10-31 | 暨南大学 | Thermal treatment method for wear-resistant low alloy steel |
| CN103014515A (en) * | 2012-12-01 | 2013-04-03 | 滁州恒昌机械制造有限公司 | High-toughness abrasion-resistant alloy steel for excavator bucket and production process thereof |
| CN103266276A (en) * | 2013-02-03 | 2013-08-28 | 王康 | Method for preparing low alloy high wear resistant cast steel plate |
-
2015
- 2015-10-28 CN CN201510726481.9A patent/CN105349898B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030026723A1 (en) * | 2001-07-12 | 2003-02-06 | Takemori Takayama | High-toughness wear-resistant steel |
| JP2008144270A (en) * | 2006-11-13 | 2008-06-26 | Jfe Steel Kk | Non-heat-treated steel for machine structure excellent in fatigue property and toughness, its manufacturing method, component for machine structure, and its manufacturing method |
| CN101397632A (en) * | 2008-10-31 | 2009-04-01 | 郭玉宝 | Multielement low-alloy water quenching abrasion resistant steel |
| KR20120053616A (en) * | 2010-11-18 | 2012-05-29 | 두산인프라코어 주식회사 | Bucket tooth for construction equipment with enhanced abrasion resistance and impact resistance |
| CN102758067A (en) * | 2012-06-29 | 2012-10-31 | 暨南大学 | Thermal treatment method for wear-resistant low alloy steel |
| CN103014515A (en) * | 2012-12-01 | 2013-04-03 | 滁州恒昌机械制造有限公司 | High-toughness abrasion-resistant alloy steel for excavator bucket and production process thereof |
| CN103266276A (en) * | 2013-02-03 | 2013-08-28 | 王康 | Method for preparing low alloy high wear resistant cast steel plate |
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