CN105316585A - High-chrome low-carbon steel abrasion-resistant bucket tooth top - Google Patents
High-chrome low-carbon steel abrasion-resistant bucket tooth top Download PDFInfo
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- CN105316585A CN105316585A CN201510726683.3A CN201510726683A CN105316585A CN 105316585 A CN105316585 A CN 105316585A CN 201510726683 A CN201510726683 A CN 201510726683A CN 105316585 A CN105316585 A CN 105316585A
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Abstract
The invention relates to smelting for small metal parts among digging parts and provides a high-chrome low-carbon steel abrasion-resistant bucket tooth top. A steel material is smelted through an electric-arc furnace and transferred into a finery, steel tapping is conducted after the proportion of components in liquid steel is adjusted, the obtained liquid steel is subjected to vacuum degassing and then metal mold casting to obtain a cast part, and the cast part is subjected to heat treatment including water quenching and oil quenching to obtain a finished product. The components in the liquid steel include, by weight, 0.10-0.14% of C, 12-16% of Cr., 1.5-3.5% of Mn, 0.15-0.25% of Ca, 0.30-0.90% of Si, 0.15-0.25% of Nb, 0.60-0.80% of Ti, 0.5-2.5% of B, 2.5-3.5% of Al, 0.30-0.80% of Cu, 0.20-0.40% of Ce, less than 0.04% of P, less than 0.03% of S and the balance Fe.
Description
Technical field
The present invention relates to the smelting of ferrous alloy, particularly the smelting of digging element small-sized metal piece, be specifically related to smelt a kind of high chromium soft steel and be cast as wear-resistant bucket tooth crown.
Background technology
Bucket tooth is the vitals on excavator, is consumable accessory, is made up of toothholder and crown, and the two is by pinned connection.The soil, sand, rock ore deposit etc. of the inefficacy of crown mainly manipulating object wear and tear to it as abrasive material, change after damage.
What be widely used in bucket tooth at present is high mangaenese steel, be subject to HI high impact when excavating high rigidity material thus produce work hardening, and then show higher wear resistance, but because softer material can not make it abundant work hardening, cause wear resistance poor, even easily there is brittle failure, therefore be not suitable for excavating the softer material as coal, earth etc.
Summary of the invention
The object of the present invention is to provide a kind of high chromium soft steel wear-resistant bucket tooth crown, to reduce crown wearing and tearing in use, particularly excavate wearing and tearing during softer material, reduce frequency and the cost of the impaired replacement of crown.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A kind of high chromium soft steel wear-resistant bucket tooth crown, adopt arc melting steel material, proceed in refining furnace after adjusting molten steel component ratio and tap, the permanent mold casting after vacuum outgas of gained molten steel, the thermal treatment of gained foundry goods through comprising water quenching and oil-cooling quenching obtains finished parts, described molten steel compositions in weight percentage comprises the C of 0.10-0.14%, the Cr of 12-16%, the Mn of 1.5-3.5%, the Ca of 0.15-0.25%, the Si of 0.30-0.90%, the Nb of 0.15-0.25%, the Ti of 0.60-0.80%, the B of 0.5-2.5%, the Al of 2.5-3.5%, the Cu of 0.30-0.80%, the Ce of 0.20-0.40%, P controls below 0.04%, S controls below 0.03%, surplus is Fe.
Further, described arc melting steel material is included in furnace bottom and lays unslaked lime, add conversion pig, the energising starting the arc is melted to 1570-1600 DEG C, skim after 1.5-2.0h and add ferromanganese, ferrosilicon, unslaked lime and fluorite, add aluminium powder, ferro-boron, ferrotianium after 10-15min, proceed in refining furnace and add chromium powder, niobium powder, copper powder and cerium oxide powder, tapping temperature is 1560-1580 DEG C.
Further, described molten steel is degassed under 10-12kPa vacuum atmosphere, permanent mold casting in this vacuum atmosphere when molten steel temperature drops to 1460-1500 DEG C, open form pickup when foundry goods 750-800 DEG C.
Further, foundry goods after described open form pickup is warming up to 1085-1115 DEG C with 30-40 DEG C/h and is incubated 1.0-1.5h in 10-12kPa vacuum atmosphere, casting temperature is made to be down to 470-500 DEG C with the clear water quenching of 80-90 DEG C after removing vacuum condition, foundry goods is proceeded in the oil bath of 150-200 DEG C and be incubated 1-2 hour, finally take out and naturally cool to room temperature.
Preferably, described molten steel compositions in weight percentage is the C of 0.10-0.14%, the Cr of 16%, the Si of the Ca of the Mn of 1.5-3.5%, 0.15-0.25%, 0.30-0.90%, the B of the Ti of the Nb of 0.15%, 0.60-0.80%, 0.5-2.5%, the Al of 2.5-3.5%, the Cu of 0.80%, the Ce of 0.20%, P control below 0.04%, S controls below 0.03%, and surplus is Fe.
It is hypoeutectoid steel that the present invention adjusts the molten steel after component ratio, and chromium wherein can improve hardening capacity and the overall wear resistance of steel, be make for the quenching technology after coordinating bear load, be out of shape little, wear resistance is high, the basis of red hardness good material.
The ferromanganese added after skimming can play the effect of preliminary deoxidation, preliminary adjustment component ratio, and, sulphur can be overcome come back to strong reductor carbon dust in molten steel owing to not adding, therefore adding of ferromanganese formation manganese sulfide be come back in molten steel played an important role to overcome sulphur.The ferrosilicon simultaneously added with ferromanganese can improve the hardness of steel, and the existence of MnO can increase the deoxidizing capacity of silicon.
The aluminium powder added, ferro-boron, ferrotianium can final deoxygenations, and concerning next step by the chromium that adds, titanium can eliminate the dilution of chromium at grain boundaries, improve corrosion stability, and the cooperation of aluminium and chromium can improve the degree that aluminium improves steel oxidation-resistance.
Niobium can reduce the air setting of low carbon martensite, avoids temper brittleness of hardening; Copper can increase the weathering resistance of steel, reduces because weather corrodes the decline causing workpiece use properties and life-span; Cerium has the effect suppressing AUSTENITE GRAIN COARSENING, has Chinese medicine effect, and the toughness of steel and plasticity can be made to improve to the good martensitic steel of acquisition.
Molten steel temperature decline can release gas dissolved in process of setting He after solidifying, and makes metal generation as the defect of pore, reduces Mechanical Property of Metal; Steel part, in heat-processed, owing to interacting with air, and makes workpiece surface corrode; The present invention carries out degassed, front heating of quenching to foundry goods to molten steel under vacuum atmosphere, effectively can avoid the problems referred to above.
Before temperature rise rate before the present invention's quenching can ensure that workpiece heart portion temperature rises to design temperature, workpiece surface temperature is unlikely to too high and causes austenite crystal thick, affects hardness and the intensity of foundry goods after next step formation of martensite; Oil bath insulation after clear water quenching, not only as a part for quenching technology, also simultaneously as tempering process, plays the effect making hypoeutectoid steel lath martensite self-tempering.
Embodiment
Embodiment 1:
Adopt arc melting steel material, lay unslaked lime, add conversion pig at furnace bottom, the energising starting the arc is melted to 1570-1600 DEG C, skims and adds ferromanganese, ferrosilicon, unslaked lime and fluorite, add aluminium powder, ferro-boron, ferrotianium after 10min after 1.5h;
Proceeding in refining furnace, add chromium powder, niobium powder, copper powder and cerium oxide powder, is the C of 0.10% by molten steel adjustment of formula by weight percentage, the Cr of 12%, the Ca of the Mn of 1.5%, 0.15-0.25%, the Si of 0.30-0.90%, the Nb of 0.15%, the Ti of 0.60%, the B of 0.5%, the Al of 2.5%, the Cu of 0.30%, the Ce of 0.20%, P control below 0.04%, and S controls below 0.03%, surplus is Fe, and ratio detects qualified can tapping, and tapping temperature is 1580 DEG C;
Gained molten steel is degassed under 10-12kPa vacuum atmosphere, permanent mold casting in this vacuum atmosphere when molten steel temperature drops to 1500 DEG C, open form pickup when foundry goods 750-800 DEG C;
Foundry goods after open form pickup is warming up to 1115 DEG C with 30 DEG C/h and is incubated 1.5h in 10-12kPa vacuum atmosphere, casting temperature is made to be down to 470-500 DEG C with the clear water quenching of 80-90 DEG C after removing vacuum condition, foundry goods is proceeded in the oil bath of 150-200 DEG C and be incubated 1 hour, finally take out and naturally cool to room temperature and to get product part.
Embodiment 2:
Adopt arc melting steel material, lay unslaked lime, add conversion pig at furnace bottom, the energising starting the arc is melted to 1570-1600 DEG C, skims and adds ferromanganese, ferrosilicon, unslaked lime and fluorite, add aluminium powder, ferro-boron, ferrotianium after 15min after 2.0h;
Proceeding in refining furnace, add chromium powder, niobium powder, copper powder and cerium oxide powder, is the C of 0.14% by molten steel adjustment of formula by weight percentage, the Cr of 16%, the Ca of the Mn of 3.5%, 0.15-0.25%, the Si of 0.30-0.90%, the Nb of 0.25%, the Ti of 0.80%, the B of 2.5%, the Al of 3.5%, the Cu of 0.80%, the Ce of 0.40%, P control below 0.04%, and S controls below 0.03%, surplus is Fe, and ratio detects qualified can tapping, and tapping temperature is 1560 DEG C;
Gained molten steel is degassed under 10-12kPa vacuum atmosphere, permanent mold casting in this vacuum atmosphere when molten steel temperature drops to 1460 DEG C, open form pickup when foundry goods 750-800 DEG C;
Foundry goods after open form pickup is warming up to 1085 DEG C with 40 DEG C/h and is incubated 1.0h in 10-12kPa vacuum atmosphere, casting temperature is made to be down to 470-500 DEG C with the clear water quenching of 80-90 DEG C after removing vacuum condition, foundry goods is proceeded in the oil bath of 150-200 DEG C and be incubated 2 hours, finally take out and naturally cool to room temperature and to get product part.
Embodiment 3:
Adopt arc melting steel material, lay unslaked lime, add conversion pig at furnace bottom, the energising starting the arc is melted to 1570-1600 DEG C, skims and adds ferromanganese, ferrosilicon, unslaked lime and fluorite, add aluminium powder, ferro-boron, ferrotianium after 15min after 75min;
Proceeding in refining furnace, add chromium powder, niobium powder, copper powder and cerium oxide powder, is the C of 0.12% by molten steel adjustment of formula by weight percentage, the Cr of 14%, the Ca of the Mn of 2.5%, 0.15-0.25%, the Si of 0.30-0.90%, the Nb of 0.20%, the Ti of 0.70%, the B of 1.5%, the Al of 3.0%, the Cu of 0.55%, the Ce of 0.30%, P control below 0.04%, and S controls below 0.03%, surplus is Fe, and ratio detects qualified can tapping, and tapping temperature is 1570 DEG C;
Gained molten steel is degassed under 10-12kPa vacuum atmosphere, permanent mold casting in this vacuum atmosphere when molten steel temperature drops to 1480 DEG C, open form pickup when foundry goods 750-800 DEG C;
Foundry goods after open form pickup is warming up to 1000 DEG C with 35 DEG C/h and is incubated 75min in 10-12kPa vacuum atmosphere, casting temperature is made to be down to 470-500 DEG C with the clear water quenching of 80-90 DEG C after removing vacuum condition, foundry goods is proceeded in the oil bath of 150-200 DEG C and be incubated 1.5 hours, finally take out and naturally cool to room temperature and to get product part.
Embodiment 4:
Adopt arc melting steel material, lay unslaked lime, add conversion pig at furnace bottom, the energising starting the arc is melted to 1570 DEG C, skims and adds ferromanganese, ferrosilicon, unslaked lime and fluorite, add aluminium powder, ferro-boron, ferrotianium after 10min after 1.5h;
Proceeding in refining furnace, add chromium powder, niobium powder, copper powder and cerium oxide powder, is the C of 0.10% by molten steel adjustment of formula by weight percentage, the Cr of 16%, the Ca of the Mn of 1.5%, 0.15-0.25%, the Si of 0.30-0.90%, the Nb of 0.15%, the Ti of 0.60%, the B of 0.5%, the Al of 2.5%, the Cu of 0.3%, the Ce of 0.20%, P control below 0.04%, and S controls below 0.03%, surplus is Fe, and ratio detects qualified can tapping, and tapping temperature is 1580 DEG C;
Gained molten steel is degassed under 10-12kPa vacuum atmosphere, permanent mold casting in this vacuum atmosphere when molten steel temperature drops to 1500 DEG C, open form pickup when foundry goods 750-800 DEG C;
Foundry goods after open form pickup is warming up to 1115 DEG C with 40 DEG C/h and is incubated 1.0h in 10-12kPa vacuum atmosphere, casting temperature is made to be down to 470-500 DEG C with the clear water quenching of 80-90 DEG C after removing vacuum condition, foundry goods is proceeded in the oil bath of 150-200 DEG C and be incubated 1 hour, finally take out and naturally cool to room temperature and to get product part.
Above embodiment only in order to technical scheme of the present invention to be described, is 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 (5)
1. one kind high chromium soft steel wear-resistant bucket tooth crown, it is characterized in that: adopt arc melting steel material, proceed in refining furnace after adjusting molten steel component ratio and tap, the permanent mold casting after vacuum outgas of gained molten steel, the thermal treatment of gained foundry goods through comprising water quenching and oil-cooling quenching obtains finished parts, described molten steel compositions in weight percentage comprises the C of 0.10-0.14%, the Cr of 12-16%, the Mn of 1.5-3.5%, the Ca of 0.15-0.25%, the Si of 0.30-0.90%, the Nb of 0.15-0.25%, the Ti of 0.60-0.80%, the B of 0.5-2.5%, the Al of 2.5-3.5%, the Cu of 0.30-0.80%, the Ce of 0.20-0.40%, P controls below 0.04%, S controls below 0.03%, surplus is Fe.
2. high chromium soft steel wear-resistant bucket tooth crown as claimed in claim 1, it is characterized in that: described arc melting steel material is included in furnace bottom and lays unslaked lime, add conversion pig, the energising starting the arc is melted to 1570-1600 DEG C, skim after 1.5-2.0h and add ferromanganese, ferrosilicon, unslaked lime and fluorite, add aluminium powder, ferro-boron, ferrotianium after 10-15min, proceed in refining furnace and add chromium powder, niobium powder, copper powder and cerium oxide powder, tapping temperature is 1560-1580 DEG C.
3. high chromium soft steel wear-resistant bucket tooth crown as claimed in claim 1 or 2, it is characterized in that: described molten steel is degassed under 10-12kPa vacuum atmosphere, permanent mold casting in this vacuum atmosphere when molten steel temperature drops to 1460-1500 DEG C, open form pickup when foundry goods 750-800 DEG C.
4. high chromium soft steel wear-resistant bucket tooth crown as claimed in claim 3, it is characterized in that: the foundry goods after described open form pickup is warming up to 1085-1115 DEG C with 30-40 DEG C/h and is incubated 1.0-1.5h in 10-12kPa vacuum atmosphere, casting temperature is made to be down to 470-500 DEG C with the clear water quenching of 80-90 DEG C after removing vacuum condition, foundry goods is proceeded in the oil bath of 150-200 DEG C and be incubated 1-2 hour, finally take out and naturally cool to room temperature.
5. high chromium soft steel wear-resistant bucket tooth crown as claimed in claim 4, is characterized in that: described molten steel compositions in weight percentage is the C of 0.10-0.14%, the Cr of 16%, the Si of the Ca of the Mn of 1.5-3.5%, 0.15-0.25%, 0.30-0.90%, the B of the Ti of the Nb of 0.15%, 0.60-0.80%, 0.5-2.5%, the Al of 2.5-3.5%, the Cu of 0.80%, the Ce of 0.20%, P control below 0.04%, S controls below 0.03%, and surplus is Fe.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660097A (en) * | 2009-08-13 | 2010-03-03 | 丁家伟 | Wear-resisting alloy steel with high boron, high chrome and low carbon and preparation method thereof |
| CN101775539A (en) * | 2009-01-14 | 2010-07-14 | 宝山钢铁股份有限公司 | High-flexibility wear-resistant steel plate and manufacturing method thereof |
| CN102021492A (en) * | 2009-09-15 | 2011-04-20 | 鞍钢股份有限公司 | Low-carbon low-alloy wear-resistant steel and production method thereof |
| CN102041458A (en) * | 2009-10-23 | 2011-05-04 | 宝山钢铁股份有限公司 | Low-alloy abrasion-resistant steel and manufacturing method thereof |
| CN102581260A (en) * | 2012-04-05 | 2012-07-18 | 大连裕龙高速钢有限公司 | Method for casting bimetallic wear-resistant bucket teeth |
| CN102978531A (en) * | 2012-11-09 | 2013-03-20 | 宁波嘉达精密铸造有限公司 | Excavator bucket tooth and preparation method thereof |
| CN103320720A (en) * | 2013-07-15 | 2013-09-25 | 四川大学 | Vanadium-containing high-boron high-chromium wear-resistant alloy and preparation method thereof |
| CN103498107A (en) * | 2013-10-22 | 2014-01-08 | 江苏盛伟模具材料有限公司 | High-boron high-chromium low-carbon high-temperature-resistant wear-resisting alloy steel and manufacturing method thereof |
| CN104178685A (en) * | 2014-08-08 | 2014-12-03 | 无棣向上机械设计服务有限公司 | Abrasion-resistant alloy material and composite modification treatment method thereof |
-
2015
- 2015-10-28 CN CN201510726683.3A patent/CN105316585A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775539A (en) * | 2009-01-14 | 2010-07-14 | 宝山钢铁股份有限公司 | High-flexibility wear-resistant steel plate and manufacturing method thereof |
| CN101660097A (en) * | 2009-08-13 | 2010-03-03 | 丁家伟 | Wear-resisting alloy steel with high boron, high chrome and low carbon and preparation method thereof |
| CN102021492A (en) * | 2009-09-15 | 2011-04-20 | 鞍钢股份有限公司 | Low-carbon low-alloy wear-resistant steel and production method thereof |
| CN102041458A (en) * | 2009-10-23 | 2011-05-04 | 宝山钢铁股份有限公司 | Low-alloy abrasion-resistant steel and manufacturing method thereof |
| CN102581260A (en) * | 2012-04-05 | 2012-07-18 | 大连裕龙高速钢有限公司 | Method for casting bimetallic wear-resistant bucket teeth |
| CN102978531A (en) * | 2012-11-09 | 2013-03-20 | 宁波嘉达精密铸造有限公司 | Excavator bucket tooth and preparation method thereof |
| CN103320720A (en) * | 2013-07-15 | 2013-09-25 | 四川大学 | Vanadium-containing high-boron high-chromium wear-resistant alloy and preparation method thereof |
| CN103498107A (en) * | 2013-10-22 | 2014-01-08 | 江苏盛伟模具材料有限公司 | High-boron high-chromium low-carbon high-temperature-resistant wear-resisting alloy steel and manufacturing method thereof |
| CN104178685A (en) * | 2014-08-08 | 2014-12-03 | 无棣向上机械设计服务有限公司 | Abrasion-resistant alloy material and composite modification treatment method thereof |
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