CN103643161A - Vanadium-titanium ore rotary hearth furnace, high-temperature wear-resistant blade thereof for feeding and manufacturing method - Google Patents
Vanadium-titanium ore rotary hearth furnace, high-temperature wear-resistant blade thereof for feeding and manufacturing method Download PDFInfo
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- CN103643161A CN103643161A CN201310572516.9A CN201310572516A CN103643161A CN 103643161 A CN103643161 A CN 103643161A CN 201310572516 A CN201310572516 A CN 201310572516A CN 103643161 A CN103643161 A CN 103643161A
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Abstract
The invention provides a vanadium-titanium ore rotary hearth furnace, a high-temperature wear-resistant blade thereof for feeding and a manufacturing method. The manufacture method comprises that molten steel is subjected to smelted and comprises the following components in percent by weight: 2.5-3.5% of C, 20.0-28.0% of Cr, 0.4-0.8% of Mn, 0.4-0.8% of Si, 0.5-1.5% of Mo, 0.2-1.0% of V, 0.5-1.5% of Ni, 2.2-3.2% of W, 0.2-0.8% of Cu, 0.035% or less of S, 0.035% or less of P, the balance Fe and unavoidable impurities; and the high-temperature wear-resistant blade is obtained by casting. The vanadium-titanium ore rotary hearth furnace comprises feeding blades which employ the above high-temperature wear-resistant blades. The beneficial effects comprise that the high-temperature wear-resistant blade suitable for the vanadium-titanium ore rotary hearth furnace with high reduction temperature (such as 1100 DEG C or more) is provided; the feed blade is long in service life; and the production efficiency and the technology smoothness of the vanadium-titanium ore rotary hearth furnace are improved, and the production cost is reduced.
Description
Technical field
The present invention relates to schreyerite rotary hearth furnace technical field, specifically, relate to high-temperature wearable blade and manufacture method thereof for a kind of schreyerite rotary hearth furnace feeding, and a kind of this feeding schreyerite rotary hearth furnace of high-temperature wearable blade that comprises.
Background technology
Conventionally, rotary hearth furnace is the major equipment of direct-reduction.Schreyerite rotary hearth furnace is the visual plant of " schreyerite rotary hearth furnace direct-reduction-electric furnace reduces deeply " production line, due to vanadium titano-magnetite feature, schreyerite rotary hearth furnace reduction temperature, reaches more than 1100 ℃ with rotary hearth furnace apparently higher than other enterprise, under high temperature, meltable molten the hardening of furnace charge.The working conditions of feeding blade is severe in its stove, and in use, vane end faces is very easily subject to the harden wearing and tearing of material of high temperature.
At present, rotary hearth furnace blade used adopts Heat resisting cast steel ZG35Cr24Ni4Si to produce, and has that good in oxidation resistance, intensity are high, good toughness, the advantages such as wear resistance, thermotolerance, solidity to corrosion and good casting property.Yet, when above-mentioned Heat resisting cast steel is used for to schreyerite rotary hearth furnace, there will be blade low problem in work-ing life, the feeding of the formed schreyerite rotary hearth furnace of common above-mentioned Heat resisting cast steel only can use on the machine about 1 month with blade, approximately 1400 tons of punishment in advance amounts.
Summary of the invention
The object of the invention is to solve at least one in the existing deficiency of above-mentioned existing issue.
For example, one of object of the present invention is to provide a kind of feeding blade that can be applicable to reduction temperature above schreyerite rotary hearth furnace up to 1100 ℃.
Another object of the present invention is to provide and be applicable to the reduction temperature schreyerite rotary hearth furnace above up to 1100 ℃ and the feeding blade of long service life.
An aspect of of the present present invention provides the manufacture method of a kind of schreyerite rotary hearth furnace feeding with high-temperature wearable blade.Described manufacture method comprises the following steps: smelt and take that to make composition be the Fe of C 2.5～3.5%, Cr 20.0～28.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.5～1.5%, V 0.2～1.0%, Ni 0.5～1.5%, W 2.2～3.2%, Cu 0.2～0.8%, S≤0.035%, P≤0.035% and surplus and the molten steel of inevitable impurity by weight percentage; Casting, obtains schreyerite rotary hearth furnace feeding high-temperature wearable blade.
In exemplary embodiment of manufacture method of the present invention, the composition of described molten steel can be Fe and the inevitable impurity of C 2.8～3.2%, Cr 23.0～25.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.8～1.2%, V 0.3～0.5%, Ni 0.8～1.2%, W 2.6～3.0%, Cu 0.4～0.6%, S≤0.035%, P≤0.035% and surplus.
In exemplary embodiment of manufacture method of the present invention, described casting step can adopt the mode of precision casting or lost foam casting to carry out.
Another aspect of the present invention provides a kind of schreyerite rotary hearth furnace feeding high-temperature wearable blade.The composition of described high-temperature wearable blade comprises by weight percentage: the Fe of C 2.5～3.5%, Cr 20.0～28.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.5～1.5%, V 0.2～1.0%, Ni 0.5～1.5%, W 2.2～3.2%, Cu 0.2～0.8%, S≤0.035%, P≤0.035% and surplus and inevitably impurity.
In an exemplary embodiment of high-temperature wearable blade of the present invention, its composition comprises by weight percentage: C 2.8～3.2%, Cr 23.0～25.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.8～1.2%, V 0.3～0.5%, Ni 0.8～1.2%, W 2.6～3.0% and Cu 0.4～0.6%.
Another aspect of the present invention provides a kind of schreyerite rotary hearth furnace.Described schreyerite rotary hearth furnace comprises feeding blade, and described feeding blade is high-temperature wearable blade as above.
Compared with prior art, beneficial effect of the present invention comprises: the high-temperature wearable blade that the schreyerite rotary hearth furnace that is applicable to reduction temperature high (for example,, more than 1100 ℃) can be provided; Feeding blade long service life; Can improve production efficiency and the technique fluency of schreyerite rotary hearth furnace, and can reduce costs.
Embodiment
Hereinafter, in connection with exemplary embodiment, describe schreyerite rotary hearth furnace of the present invention in detail and high-temperature wearable blade and manufacture method for feeding.
In one exemplary embodiment of the present invention, the feeding of schreyerite rotary hearth furnace comprises the following steps by the manufacture method of high-temperature wearable blade: smelting composition is by weight percentage the Fe of C 2.5～3.5%, Cr 20.0～28.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.5～1.5%, V 0.2～1.0%, Ni 0.5～1.5%, W 2.2～3.2%, Cu 0.2～0.8%, S≤0.035%, P≤0.035% and surplus and the molten steel of inevitable impurity; Casting, for example, adopts the mode of precision casting or lost foam casting, obtains schreyerite rotary hearth furnace feeding high-temperature wearable blade.
Preferably, the composition of molten steel is Fe and the inevitable impurity of C 2.8～3.2%, Cr 23.0～25.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.8～1.2%, V 0.3～0.5%, Ni 0.8～1.2%, W 2.6～3.0%, Cu 0.4～0.6%, S≤0.035%, P≤0.035% and surplus.
In another exemplary embodiment of the present invention, the feeding of schreyerite rotary hearth furnace comprises by weight percentage with the composition of high-temperature wearable blade: the Fe of C 2.5～3.5%, Cr 20.0～28.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.5～1.5%, V 0.2～1.0%, Ni 0.5～1.5%, W 2.2～3.2%, Cu 0.2～0.8%, S≤0.035%, P≤0.035% and surplus and inevitably impurity.
Preferably, the composition of high-temperature wearable blade is Fe and the inevitable impurity of C 2.8～3.2%, Cr 23.0～25.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.8～1.2%, V 0.3～0.5%, Ni 0.8～1.2%, W 2.6～3.0%, Cu 0.4～0.6%, S≤0.035%, P≤0.035% and surplus by weight percentage.
High-temperature wearable blade of the present invention has rational elemental composition and forms, and can form a large amount of such as Cr
7c
3, Cr
23c
6, the carbide such as VC hard phase and wear-resisting phase, thereby can make high-temperature wearable blade there is good normal temperature hardness and good hot hardness and wear resistance.Therefore, it is high (for example that high-temperature wearable blade of the present invention can be applicable to reduction temperature, more than 1100 ℃) schreyerite rotary hearth furnace, and the long service life of high-temperature wearable blade, for example, for schreyerite rotary hearth furnace, in the situation that using high-temperature wearable blade of the present invention as feeding blade, its punishment in advance amount can reach more than 5000 tons.
In another aspect of this invention, schreyerite rotary hearth furnace comprises feeding blade, and this feeding blade is high-temperature wearable blade as above.
Below in conjunction with concrete example, illustrate exemplary embodiment of the present invention.
Example 1
In this example, producing the feeding of schreyerite rotary hearth furnace comprises by the process of high-temperature wearable blade: according to rotary hearth furnace feeding blade drawing, produce blade; Employing medium-frequency induction furnace is smelted; Evaporative pattern cast.
Wherein, medium-frequency induction furnace is smelted step and is strictly controlled molten steel composition, and the composition that casting obtains high-temperature wearable blade is by weight percentage: Fe and the trace impurity of C 2.61%, Cr 21.3%, Mn 0.642%, Si 0.585%, Mo 0.576%, V 0.33%, Ni 0.61%, W 2.28%, Cu 0.55%, S≤0.035%, P≤0.035% and surplus.
The high-temperature wearable blade of this example, for schreyerite rotary hearth furnace, is reached to 5000 ton hours in its punishment in advance amount, there is wearing and tearing, the about 20mm of abrasion loss, the high-temperature wearable blade that rolls off the production line and more renew in the end face of this high-temperature wearable blade.
Example 2
In this example, producing the feeding of schreyerite rotary hearth furnace comprises by the process of high-temperature wearable blade: according to rotary hearth furnace feeding blade drawing, produce blade; Employing medium-frequency induction furnace is smelted; Precision casting.
Wherein, medium-frequency induction furnace is smelted step and is strictly controlled molten steel composition, and the composition that casting obtains high-temperature wearable blade is by weight percentage: C 3.50%, Cr 27.6%, Mn 0.588%, Si 0.563%, Mo 1.23%, V 0.89%, Ni 1.38%, W 3.14%, Cu 0.56%, S≤0.035%, P≤0.035%, all the other are Fe.
The high-temperature wearable blade of this example, for schreyerite rotary hearth furnace, is reached to 5200 ton hours in its punishment in advance amount, there is wearing and tearing, the about 19mm of abrasion loss, the high-temperature wearable blade that rolls off the production line and more renew in the end face of this high-temperature wearable blade.
Example 3
In this example, producing the feeding of schreyerite rotary hearth furnace comprises by the process of high-temperature wearable blade: according to rotary hearth furnace feeding blade drawing, produce blade; Employing vacuum melting furnace is smelted; Evaporative pattern cast.
Wherein, vacuum melting furnace is smelted step and is strictly controlled molten steel composition, and the composition that casting obtains high-temperature wearable blade is by weight percentage: C 3.02%, Cr 24.6%, Mn 0.483%, Si 0.633%, Mo 0.98%, V 0.42%, Ni 1.04%, W 2.84%, Cu 0.61%, S≤0.035%, P≤0.035%, all the other are Fe.
The high-temperature wearable blade of this example, for schreyerite rotary hearth furnace, is reached to 5100 ton hours in its punishment in advance amount, there is wearing and tearing, the about 18mm of abrasion loss, the high-temperature wearable blade that rolls off the production line and more renew in the end face of this high-temperature wearable blade.
In sum, the present invention can provide a kind of high-temperature wearable blade that is applicable to the schreyerite rotary hearth furnace of reduction temperature high (for example, more than 1100 ℃), and its long service life, and for example, its punishment in advance amount can reach more than 5000 tons.In addition, the present invention can improve production efficiency and the technique fluency of schreyerite rotary hearth furnace, and can reduce costs.
Although described the present invention in conjunction with exemplary embodiment above, those of ordinary skills should be clear, in the situation that do not depart from the spirit and scope of claim, can carry out various modifications to above-described embodiment.
Claims (7)
1. a manufacture method for high-temperature wearable blade for the feeding of schreyerite rotary hearth furnace, is characterized in that, described manufacture method comprises the following steps:
Smelting be take and made composition and be by weight percentage the Fe of C 2.5～3.5%, Cr 20.0～28.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.5～1.5%, V 0.2～1.0%, Ni 0.5～1.5%, W 2.2～3.2%, Cu 0.2～0.8%, S≤0.035%, P≤0.035% and surplus and the inevitable molten steel of impurity;
Casting, obtains schreyerite rotary hearth furnace feeding high-temperature wearable blade.
2. the manufacture method of high-temperature wearable blade for schreyerite rotary hearth furnace feeding according to claim 1, it is characterized in that, the composition of described molten steel is Fe and the inevitable impurity of C 2.8～3.2%, Cr 23.0～25.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.8～1.2%, V 0.3～0.5%, Ni 0.8～1.2%, W 2.6～3.0%, Cu 0.4～0.6%, S≤0.035%, P≤0.035% and surplus.
3. the manufacture method of high-temperature wearable blade for schreyerite rotary hearth furnace feeding according to claim 1, is characterized in that, described casting step adopts the mode of precision casting or lost foam casting to carry out.
4. schreyerite rotary hearth furnace feeding high-temperature wearable blade, it is characterized in that, the composition of described high-temperature wearable blade comprises by weight percentage: the Fe of C 2.5～3.5%, Cr 20.0～28.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.5～1.5%, V 0.2～1.0%, Ni 0.5～1.5%, W 2.2～3.2%, Cu 0.2～0.8%, S≤0.035%, P≤0.035% and surplus and inevitably impurity.
5. schreyerite rotary hearth furnace according to claim 4 feeding high-temperature wearable blade, it is characterized in that, the composition of described high-temperature wearable blade comprises by weight percentage: C 2.8～3.2%, Cr 23.0～25.0%, Mn 0.4～0.8%, Si 0.4～0.8%, Mo 0.8～1.2%, V 0.3～0.5%, Ni 0.8～1.2%, W 2.6～3.0% and Cu 0.4～0.6%.
6. a schreyerite rotary hearth furnace, is characterized in that, described schreyerite rotary hearth furnace comprises feeding blade, and described feeding blade is high-temperature wearable blade as described in any one in claim 4 to 5.
7. schreyerite rotary hearth furnace according to claim 6, is characterized in that, described schreyerite rotary hearth furnace is for direct-reduction vanadium titano-magnetite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310572516.9A CN103643161B (en) | 2013-11-15 | 2013-11-15 | Vanadium-titanium ore rotary hearth furnace and feeding temperature wear-resistant blade thereof and manufacture method |
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| CN201310572516.9A CN103643161B (en) | 2013-11-15 | 2013-11-15 | Vanadium-titanium ore rotary hearth furnace and feeding temperature wear-resistant blade thereof and manufacture method |
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| CN103643161A true CN103643161A (en) | 2014-03-19 |
| CN103643161B CN103643161B (en) | 2016-01-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042326A (en) * | 2019-05-21 | 2019-07-23 | 马鞍山市庄芝耐磨合金有限公司 | A kind of centrifugal casting agitator arm and method |
| CN112240288A (en) * | 2020-11-02 | 2021-01-19 | 上海亦又新能源科技有限公司 | High-wear-resistance plunger pump crankshaft and long-service-life high-pressure plunger pump |
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| JPS5877555A (en) * | 1981-11-04 | 1983-05-10 | Nippon Yakin Kogyo Co Ltd | Austenitic stainless steel with superior pitting corrosion resistance and weather resistance |
| CN101497966A (en) * | 2009-03-02 | 2009-08-05 | 暨南大学 | High-hardness hypereutectic high chromium, manganese, molybdenum and tungsten alloy wear resistant steel material and use thereof |
| CN103088249A (en) * | 2013-01-23 | 2013-05-08 | 驻马店市永诚耐磨材料有限公司 | Abrasion-resistant alloy cast iron material with high hardness for chute lining plate, and preparation method thereof |
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2013
- 2013-11-15 CN CN201310572516.9A patent/CN103643161B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5877555A (en) * | 1981-11-04 | 1983-05-10 | Nippon Yakin Kogyo Co Ltd | Austenitic stainless steel with superior pitting corrosion resistance and weather resistance |
| CN101497966A (en) * | 2009-03-02 | 2009-08-05 | 暨南大学 | High-hardness hypereutectic high chromium, manganese, molybdenum and tungsten alloy wear resistant steel material and use thereof |
| CN103088249A (en) * | 2013-01-23 | 2013-05-08 | 驻马店市永诚耐磨材料有限公司 | Abrasion-resistant alloy cast iron material with high hardness for chute lining plate, and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042326A (en) * | 2019-05-21 | 2019-07-23 | 马鞍山市庄芝耐磨合金有限公司 | A kind of centrifugal casting agitator arm and method |
| CN110042326B (en) * | 2019-05-21 | 2020-05-22 | 马鞍山市庄芝耐磨合金有限公司 | Centrifugal casting stirring impeller and method |
| CN112240288A (en) * | 2020-11-02 | 2021-01-19 | 上海亦又新能源科技有限公司 | High-wear-resistance plunger pump crankshaft and long-service-life high-pressure plunger pump |
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| CN103643161B (en) | 2016-01-06 |
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