CN102899567A - Wear-resistant width fixing machine module and manufacturing method thereof - Google Patents
Wear-resistant width fixing machine module and manufacturing method thereof Download PDFInfo
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Abstract
The invention provides a wear-resistant width fixing machine module and a manufacturing method thereof, which belongs to the technical field of width fixing machine modules. The width fixing machine module comprises, on a basis of mass percentage, 2.5 to 2.8 of C, 1.8 to 2.4 of Si, no more than 3.5 and no less than 3.2 of C + 1/3Si, 2.2 to 2.5 of Al, 0.6 to 0.8 of Cu, 0.5 to 0.8 of Ni, 0.15 to 0.30 of Mo, 0.3 to 0.6 of Mn, 0.03 to 0.05 of Ca, 0.03 to 0.05 of Ba, 0.04 to 0.07 of Mg, 0.015 to 0.035 of Zn, 0.003 to 0.006 of B, 0.02 to 0.04 of Ti, 0.08 to 0.10 of V, 0.012 to 0.030 of N, no more than 0.035 of P and no more than 0.010 of S, with the balance being Fe. According to the invention, an electric furnace is used for production, a cold-hardening resin sand mold is used for casting, and the prepared width fixing machine module has high strength, good toughness and excellent high temperature oxidation resistance, thermal fatigue resistance and abrasion resistance.
Description
Technical field
The present invention relates to a kind of Settled breadth machine module and manufacture method thereof, particularly the wear-resisting module of a kind of large lateral pressure fixed-width pressure machine and manufacture method thereof belong to the Settled breadth machine module technical field.
Background technology
Large lateral pressure Fixed width (Sizing Press is called for short SP) is an on-line width adjustment technology, has become an important new technology in the modern hot rolled strip production, and it is the important new installation that slab is carried out disposable large size side pressure.The main application of fixed-width pressure machine is that wide requirement customizes thick incoming slab width according to different production boards, be specially adapted to the few and occasion of producing again the wide production board of multiple different plate of continuously cast bloom specification, can effectively reduce former material base width specifications and continuously cast bloom width adjustment time and number of times, improve continuous caster output and productivity, reduce the slab tank farm stock, simplify slab yard management and rolling scaduled, be convenient in time produce the various width specifications band steel that satisfy user's needs.
Since the large lateral pressure fixed-width pressure machine pat to as if the steel billet that just from process furnace, taken out, its samming reaches more than 1100 ℃, under high loading, high temperature action condition, also will be subject to the effect that high frequency is impacted.Therefore, the working condition of fixed-width pressure machine module is extremely abominable.This has good high temperature resistant fatigue property, high temperature resistant impact property, high temperature wear resistant performance with regard to the working lining that requires fixed-width pressure machine module, and this has proposed very harsh requirement to the over-all properties of material beyond doubt.Yet the working face of fixed-width pressure machine module usually large-area crackle can occur at present.When crackle is more, if untimely replacing module will in the phenomenon of working face appearance " surfacial spalling ", be brought major hidden danger to steel rolling production.
In order to improve the work-ing life of large lateral pressure fixed-width pressure machine module, Japanese Patent JP2002194478A discloses the cast iron materials that is used for Settled breadth machine module, its composition comprises by weight percentage: C:3.2 ~ 4.2%, Si:1.0 ~ 2.5%, Mn:0.1 ~ 0.6%, below the P:0.10%, below the S:0.02%, below the Cr:0.15%, Mg:0.04 ~ 0.10%, the Fe surplus, in described structure, area ratio crystallization graphite more than 15%, graphite granule particle diameter accounting for more than 50% more than 100 μ m in described kish of separating out, yet in the cast iron materials that this patent provides, contain too much inclusion, seriously affect the performance of cast iron, especially reduce plasticity and toughness, cause being prone to crackle in the module use and peeling off.Chinese patent CN102168224A also discloses a kind of Settled breadth machine module, described Settled breadth machine module is processed cast molding by spheroidal graphite cast iron, it is characterized in that: described spheroidal graphite cast iron comprises the composition of following mass percent: C:3～3.9%, Si:1.5～2.2%, Mn:0.3～0.5%, P≤0.04%, S≤0.012%, Cr＜0.3%, Ni:1.5 ~ 2.3%, Mo:0.4 ~ 0.6%, rare earth element: 0.08～0.25%, Fe surplus.This invention provides and contains more expensive nickel, molybdenum element in the module material, also has the deficiency of the low and poor toughness of intensity.Chinese patent CN202061891U also discloses a kind of Settled breadth machine module, and the working face of its back side module is comprised of three inclined-planes and a curved surface; The first inclined-plane and horizontal angle of cut α
1＜20 °, the second inclined-plane and horizontal angle of cut α
2＜13 °, the second inclined-plane and curved surface are tangent, the 3rd inclined-plane and horizontal angle of cut α
3Be 12 °, the 3rd inclined-plane and curved surface are tangent.The first slope level length: the second slope level length: curved surface horizontal length: the 3rd slope level length ratio is 12:22:23:11.Owing to changed the shape of back side module working face, make it to be conducive to the balanced consistent of metal flow momentum, can be according to temperature difference on the width of plate slab direction of coming out of the stove, the curved surface form of flexible adjusting module one side working face, thereby effectively control the slab lateral bending after the constant width machine side pressure, both can greatly simplify production technique, can reduce the lateral bending defective again, improve the quality of products.Chinese patent CN201791735U also discloses a kind of hot rolling unit slab press working module, particularly large lateral pressure constant width machine module.A kind of hot rolling unit sizing press module (1), its working face (2) comprises a plane (22) and three inclined-planes (21), (23) and (24), longitudinally two of the working face processing of module take the mid-depth line as symmetrical V-shaped groove.Along module vertically on arbitrary transverse section (A-A) on the working face curve by the first straight line (25), first horizontal V-shaped line (26), middle part straight line (27), second horizontal V-shaped line (28) and the 3rd straight line (29) formation.Sizing press curved surface module of the present invention at first strengthens the draught to metal side limit, middle part on the thickness direction of slab, and be less than centre portions near the metal lateral pressure amount of upper and lower surface, reduce slab in side pressure process and the horizontal operation of rolling side up and down the surface the down tilt amount, the final generation that reduces the defectives such as steel edge portion fine rule, the lumber recovery of raising belt steel product.In order to improve the work-ing life of module, (the Wang Guanghuan of Shanghai Communications University, the development of the compound module of fixed-width side press and application, Shanghai Communications University's academic dissertation, 2009) also propose to adopt the built-up welding of Ni-Cr-Mo-W nickel-base welding rod in the working face of fixed-width pressure machine module, reach the purpose that prolongs module life, but adopt overlaying method to make fixed-width pressure machine module, there is the poor and low deficiency of wear resistance of uniformity of hardness in overlay cladding, and overlay cladding is prone to cracking in using and peels off.
Summary of the invention
The objective of the invention is the problems for existence in the existing Settled breadth machine module use, propose to adopt the good low-carbon Ductile Iron of obdurability to make Settled breadth machine module, on the low-carbon Ductile Iron basis, suitably add copper, aluminium, nickel, the alloying elements such as molybdenum, improve intensity and the hardness of magnesium iron, and employing copper-magnesium alloy nodulizing agent and the nodularization of nickel magnesium alloy nodulizing agent, improve magnesium iron nodularization effect, in addition, also add a small amount of calcium, barium, zinc, titanium, boron, vanadium, the micro alloying elements such as nitrogen, refinement magnesium iron solidified structure improves toughness and the thermal fatigue resistance of Settled breadth machine module, promotes increasing substantially of Settled breadth machine module work-ing life.
Purpose of the present invention can realize by following measures:
The chemical composition of Settled breadth machine module of the present invention is (massfraction %): 2.5 ~ 2.8C, 1.8 ~ 2.4Si, 3.2≤C+1/3Si≤3.5,2.2 ~ 2.5Al, 0.6 ~ 0.8Cu, 0.5 ~ 0.8Ni, 0.15 ~ 0.30Mo, 0.3 ~ 0.6Mn, 0.03 ~ 0.05Ca, 0.03 ~ 0.05Ba, 0.04 ~ 0.07Mg, 0.015 ~ 0.035Zn, 0.003 ~ 0.006B, 0.02 ~ 0.04Ti, 0.08 ~ 0.10V, 0.012 ~ 0.030N, P≤0.035, S≤0.010, Fe surplus.
Settled breadth machine module electrosmelting of the present invention, its manufacturing technology steps is:
1. with ordinary scrap steel, carburelant and the fusing of molybdenum-iron Hybrid Heating, molten clear rear ferrosilicon and the ferromanganese of adding of molten iron, after the stokehold adjusting component is qualified temperature is risen to 1560～1580 ℃, come out of the stove after adding aluminium and calsibar alloy, molten iron is come out of the stove, and to add quality in the process be that the come out of the stove ferrosilicon of molten iron total mass 0.70～0.85% carries out current-following inoculation and processes, and wherein used Silicon in Ferrosilicon mass content is 75～80%;
2. copper-magnesium alloy nodulizing agent, nickel magnesium alloy nodulizing agent, ferro-boron, metallic zinc, VN alloy and ferrotianium are crushed to the fritter that granularity is 8～12mm, behind 200～250 ℃ of oven dry 3～5h, place the casting ladle bottom, with pouring method in the bag molten iron is carried out spheroidizing and composite inoculating processing;
3. use cold setresin sand molding Settled breadth machine module, the paintcast alcohol-base paint adopts step molten iron 2. to pour into a mould 1410～1430 ℃ of molten steel pouring temperatures;
4. pour into a mould the air cooling Settled breadth machine module of unpacking behind 15～20h, spruing, cleaning undesirable root, overlap, burr;
5. Settled breadth machine module is heated to 920～950 ℃ with stove, the insulation 6～8h, then air-cooled be lower than 300 ℃ to temperature after, again enter stove and be heated to 530～580 ℃, the insulation 12～15h, then air cooling is refined to specified dimension and precision at last to room temperature.
The performance of alloy material is determined by metallographic structure, and certain tissue depends on chemical ingredients and thermal treatment process, and chemical ingredients of the present invention is to determine like this:
Carbon and silicon: carbon and silicon are to guarantee that magnesium iron has the important element of good mechanical properties and good castability, carbon and silicone content are excessively low, the cast iron melting difficulty, and castability is poor, carbon and silicone content are too high, Graphite in Cast Iron quantity is too much, causes the mechanical property of cast iron, and especially intensity and toughness obviously descend, working conditions according to Settled breadth machine module, determine that suitable carbon content is 2.5 ~ 2.8%, silicone content is 1.8 ~ 2.4%, and 3.2%≤C+1/3Si≤3.5%.
Aluminium: aluminium mainly is dissolved in matrix, obviously improves antioxidant property, hot strength and the wear resistance of matrix, and add-on is very few, raising impact on the magnesium iron performance is little, and add-on is too much, easily produces oxide inclusion, damage on the contrary the performance of magnesium iron, suitable aluminium content is 2.2 ~ 2.5%.
Copper and mickel: adding copper and mickel in the magnesium iron mainly is in order to improve hardening capacity, to improving magnesium iron intensity positive effect is arranged also, add-on is too much, when particularly the nickel add-on is too much, retained austenite is too much in the normalized structure, reduce on the contrary the intensity of magnesium iron, and nickel is expensive, suitable copper content is 0.6 ~ 0.8%, and suitable nickel content is 0.5 ~ 0.8%.
Molybdenum: add an amount of molybdenum in the magnesium iron, has crystal grain thinning, improve the effect of magnesium iron obdurability, in addition, molybdenum can also reduce the temper brittleness of magnesium iron, but the molybdenum add-on is too much, be prone to carbide in the magnesium iron, and the appearance of carbide can greatly damage intensity and the toughness of magnesium iron, and suitable molybdenum content should be controlled at 0.15 ~ 0.30%.
Manganese: add an amount of manganese in the magnesium iron and mainly play desoxydatoin, and manganese also is improved the effect of magnesium iron intensity, but manganese reduces the high temperature oxidation resistance of magnesium iron, suitable manganese content should be controlled at 0.3 ~ 0.6%.
Calcium and barium: the Main Function that adds calcium and barium in the magnesium iron is deoxidation, desulfurization, in addition, calcium and barium also are improved the effect of inclusion morphology and distribution, promote increasing substantially of magnesium iron mechanical property and thermal fatigue property, suitable calcium add-on should be controlled at 0.03 ~ 0.05%, and suitable barium add-on should be controlled at 0.03 ~ 0.05%.
Magnesium: the Main Function that magnesium adds molten iron is to promote spheroidization of graphite, but magnesium is to promote the whitening element, and add-on is too much, is prone to the carbide of fragility in the cast iron, intensity and the toughness of infringement magnesium iron, and suitable magnesium add-on should be controlled at 0.04 ~ 0.07%.
Boron: the boron solid solution obviously improves matrix hardening capacity in matrix, and still, the boron add-on is too much, is prone to the Fe of fragility in the magnesium iron
3(B, C) carbon-boron compound causes magnesium iron mechanical property decrease, and suitable boron add-on should be controlled at 0.003 ~ 0.006%.
Zinc: add an amount of zinc in the magnesium iron and have preferably deoxidation, sweetening effectiveness, zinc reduces the molten iron condensate depression in addition, promote the effect of magnesium iron solidified structure refinement, be conducive to increasing substantially of magnesium iron performance, add-on is too much, be prone to the carbide of fragility in the magnesium iron, be unfavorable on the contrary the improvement of magnesium iron performance, suitable zinc add-on should be controlled at 0.015 ~ 0.035%.
Titanium, vanadium, nitrogen: add an amount of titanium in the magnesium iron, vanadium, nitrogen, mainly be in order to form dystectic TiN, the VN particle, these refractory grain, can play external nucleation, promote that magnesium iron solidifies refinement, cause the intensity of Settled breadth machine module and toughness and thermal fatigue property and wear resistance obviously to improve, but titanium, vanadium, the nitrogen add-on is too much, dystectic TiN, the easy alligatoring of VN particle, reduce on the contrary the performance of Settled breadth machine module, suitable vanadium add-on should be controlled at 0.08 ~ 0.10%, and suitable titanium add-on should be controlled at 0.02 ~ 0.04%, and suitable nitrogen add-on should be controlled at 0.012 ~ 0.030%.
Sulphur and phosphorus: sulphur and phosphorus are inevitable trace impurities in the molten iron, the performance of grievous injury magnesium iron should strictly be controlled its residual quantity, in order to obtain high performance Settled breadth machine module, its sulphur content is limited in below 0.010%, its phosphorus content is limited in below 0.035%.
In addition, magnesium iron of the present invention adopts copper-magnesium alloy nodulizing agent and nickel magnesium alloy nodulizing agent to carry out nodularization in the nodularization process, has overcome the deficiency of common pure magnesium nodularization poor stability and common magnesium-rare earth nodularization weak effect, make the magnesium iron stable performance, be conducive to the safe handling of Settled breadth machine module.
Effect of the present invention:
(1) Settled breadth machine module made from the present invention, production technique is easy, and in the metallographic structure, the nodularization rate of graphite is greater than 95%.
(2) the Settled breadth machine module inclusion made from the present invention is few, and the inclusion total amount is down to below 0.45%.
(3) the Settled breadth machine module solidified structure made from the present invention is tiny, has high strength and high tenacity, and wherein tensile strength is greater than 750MPa, and yield strength is greater than 450MPa, and unit elongation is greater than 4.0%, ballistic work (α
KV) greater than 5J, hardness reaches 260～280HB.
(4) Settled breadth machine module with manufacturing of the present invention has fabulous resistance to high temperature oxidation and thermal fatigue resistance, also has good wear resistance, is used for the hot rolling constant width machine, and its each steel transportation amount surpasses 100,000 tons, and repairs cutting output less than 16mm at every turn.
Embodiment
The invention will be further described below in conjunction with embodiment:
Embodiment 1:
Adopt 5 tons of line frequency furnace melting Settled breadth machine module materials, the manufacturing technology steps of Settled breadth machine module is:
1. with ordinary scrap steel, carburelant and the fusing of molybdenum-iron Hybrid Heating, molten clear rear ferrosilicon and the ferromanganese of adding of molten iron, after the stokehold adjusting component is qualified temperature is risen to 1562 ℃, come out of the stove after adding aluminium and calsibar alloy, molten iron is come out of the stove, and to add quality in the process be that the come out of the stove siliceous quality of molten iron total mass 0.70% is that 79.3% ferrosilicon carries out current-following inoculation and processes.
2. copper-magnesium alloy nodulizing agent, nickel magnesium alloy nodulizing agent, ferro-boron, metallic zinc, VN alloy and ferrotianium are crushed to the fritter that granularity is 8～12mm, behind 200 ℃ of oven dry 5h, place the casting ladle bottom, with pouring method in the bag molten iron is carried out spheroidizing and composite inoculating processing.
3. use cold setresin sand molding Settled breadth machine module, the paintcast alcohol-base paint adopts step molten iron 2. to pour into a mould 1412 ℃ of molten steel pouring temperatures;
4. pour into a mould the air cooling Settled breadth machine module of unpacking behind the 20h, spruing, cleaning undesirable root, overlap, burr;
5. Settled breadth machine module is heated to 920 ℃ with stove, and insulation 8h is then air-cooled during to 280 ℃ of temperature, and again enter stove and be heated to 580 ℃, insulation 15h, then air cooling is refined to specified dimension and precision at last to room temperature.The composition of Settled breadth machine module sees Table 1, and the performance of Settled breadth machine module sees Table 2.
Embodiment 2:
Adopt 5 tons of line frequency furnace melting Settled breadth machine module materials, the manufacturing technology steps of Settled breadth machine module is:
1. with ordinary scrap steel, carburelant and the fusing of molybdenum-iron Hybrid Heating, molten clear rear ferrosilicon and the ferromanganese of adding of molten iron, after the stokehold adjusting component is qualified temperature is risen to 1579 ℃, come out of the stove after adding aluminium and calsibar alloy, molten iron is come out of the stove, and to add quality in the process be that the come out of the stove siliceous quality of molten iron total mass 0.85% is that 75.8% ferrosilicon carries out current-following inoculation and processes.
2. copper-magnesium alloy nodulizing agent, nickel magnesium alloy nodulizing agent, ferro-boron, metallic zinc, VN alloy and ferrotianium are crushed to the fritter that granularity is 8～12mm, behind 250 ℃ of oven dry 3h, place the casting ladle bottom, with pouring method in the bag molten iron is carried out spheroidizing and composite inoculating processing.
3. use cold setresin sand molding Settled breadth machine module, the paintcast alcohol-base paint adopts step molten iron 2. to pour into a mould 1428 ℃ of molten steel pouring temperatures;
4. pour into a mould the air cooling Settled breadth machine module of unpacking behind the 15h, spruing, cleaning undesirable root, overlap, burr;
5. Settled breadth machine module is heated to 950 ℃ with stove, and insulation 6h is then air-cooled during to 260 ℃ of temperature, and again enter stove and be heated to 530 ℃, insulation 15h, then air cooling is refined to specified dimension and precision at last to room temperature.The composition of Settled breadth machine module sees Table 1, and the performance of Settled breadth machine module sees Table 2.
Embodiment 3:
Adopt 5 tons of line frequency furnace melting Settled breadth machine module materials, the manufacturing technology steps of Settled breadth machine module is:
1. with ordinary scrap steel, carburelant and the fusing of molybdenum-iron Hybrid Heating, molten clear rear ferrosilicon and the ferromanganese of adding of molten iron, after the stokehold adjusting component is qualified temperature is risen to 1571 ℃, come out of the stove after adding aluminium and calsibar alloy, molten iron is come out of the stove, and to add quality in the process be that the come out of the stove siliceous quality of molten iron total mass 0.75% is that 75.8% ferrosilicon carries out current-following inoculation and processes.
2. copper-magnesium alloy nodulizing agent, nickel magnesium alloy nodulizing agent, ferro-boron, metallic zinc, VN alloy and ferrotianium are crushed to the fritter that granularity is 8～12mm, behind 220 ℃ of oven dry 4h, place the casting ladle bottom, with pouring method in the bag molten iron is carried out spheroidizing and composite inoculating processing.
3. use cold setresin sand molding Settled breadth machine module, the paintcast alcohol-base paint adopts step molten iron 2. to pour into a mould 1419 ℃ of molten steel pouring temperatures;
4. pour into a mould the air cooling Settled breadth machine module of unpacking behind the 18h, spruing, cleaning undesirable root, overlap, burr;
5. Settled breadth machine module is heated to 940 ℃ with stove, and insulation 7h is then air-cooled during to 268 ℃ of temperature, and again enter stove and be heated to 560 ℃, insulation 14h, then air cooling is refined to specified dimension and precision at last to room temperature.The composition of Settled breadth machine module sees Table 1, and the performance of Settled breadth machine module sees Table 2.
The composition of table 1 Settled breadth machine module (massfraction, %)
The mechanical property of table 2 Settled breadth machine module
Settled breadth machine module of the present invention has been successfully applied on the hot rolling slab sizing press, because Settled breadth machine module nodularization rate of the present invention is high, inclusion is few, fine microstructures, not only hardness is high, and obdurability, high temperature oxidation resistance, thermal fatigue resistance and wear resistance are good, can be owing to unusual cracks causes inefficacy in the use, be used for the hot rolling slab sizing press, its each steel transportation amount surpasses 100,000 tons, and repairs cutting output less than 16mm at every turn.Apply product of the present invention, can improve hot rolling slab sizing press working efficiency, alleviate labor strength, also can avoid the unstable in the production process, and can economize on resources, reduce production costs, have good economic and social benefit.
Claims (2)
1. the manufacture method of a wear-resisting Settled breadth machine module is characterized in that, the chemical composition of Settled breadth machine module is: 2.5 ~ 2.8C, 1.8 ~ 2.4Si, 3.2≤C+1/3Si≤3.5,2.2 ~ 2.5Al, 0.6 ~ 0.8Cu, 0.5 ~ 0.8Ni, 0.15 ~ 0.30Mo, 0.3 ~ 0.6Mn, 0.03 ~ 0.05Ca, 0.03 ~ 0.05Ba, 0.04 ~ 0.07Mg, 0.015 ~ 0.035Zn, 0.003 ~ 0.006B, 0.02 ~ 0.04Ti, 0.08 ~ 0.10V, 0.012 ~ 0.030N, P≤0.035, S≤0.010, the Fe surplus, above-mentioned is massfraction %;
Its preparation method may further comprise the steps:
1. with ordinary scrap steel, carburelant and the fusing of molybdenum-iron Hybrid Heating, molten clear rear ferrosilicon and the ferromanganese of adding of molten iron, after the stokehold adjusting component is qualified temperature is risen to 1560～1580 ℃, come out of the stove after adding aluminium and calsibar alloy, molten iron is come out of the stove, and to add quality in the process be that the come out of the stove ferrosilicon of molten iron total mass 0.70～0.85% carries out current-following inoculation and processes, and wherein used Silicon in Ferrosilicon mass content is 75～80%;
2. copper-magnesium alloy nodulizing agent, nickel magnesium alloy nodulizing agent, ferro-boron, metallic zinc, VN alloy and ferrotianium are crushed to the fritter that granularity is 8～12mm, behind 200～250 ℃ of oven dry 3～5h, place the casting ladle bottom, with pouring method in the bag molten iron is carried out spheroidizing and composite inoculating processing;
3. use cold setresin sand molding Settled breadth machine module, the paintcast alcohol-base paint adopts step molten iron 2. to pour into a mould 1410～1430 ℃ of molten steel pouring temperatures;
4. pour into a mould the air cooling Settled breadth machine module of unpacking behind 15～20h, spruing, cleaning undesirable root, overlap, burr;
5. Settled breadth machine module is heated to 920～950 ℃ with stove, the insulation 6～8h, then air-cooled be lower than 300 ℃ to temperature after, again enter stove and be heated to 530～580 ℃, the insulation 12～15h, then air cooling is refined to specified dimension and precision at last to room temperature.
2. a kind of wear-resisting Settled breadth machine module for preparing in accordance with the method for claim 1.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757516A (en) * | 2014-01-09 | 2014-04-30 | 北京工业大学 | Wear-resisting white cast iron and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002194478A (en) * | 2000-12-25 | 2002-07-10 | Kogi Corp | Cast iron material for sizing press die |
| CN102168224A (en) * | 2011-05-26 | 2011-08-31 | 上海东新冶金技术工程有限公司 | Sizing press module |
| CN102615108A (en) * | 2012-04-09 | 2012-08-01 | 北京工业大学 | Centrifugal casting high-speed steel composite roll and manufacture method thereof |
-
2012
- 2012-09-14 CN CN201210339615.8A patent/CN102899567B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002194478A (en) * | 2000-12-25 | 2002-07-10 | Kogi Corp | Cast iron material for sizing press die |
| CN102168224A (en) * | 2011-05-26 | 2011-08-31 | 上海东新冶金技术工程有限公司 | Sizing press module |
| CN102615108A (en) * | 2012-04-09 | 2012-08-01 | 北京工业大学 | Centrifugal casting high-speed steel composite roll and manufacture method thereof |
Non-Patent Citations (1)
| Title |
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| 郝石坚: "《现代铸铁学》", 1 June 2004, article "现代铸铁学", pages: 99-108 - 228 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757516A (en) * | 2014-01-09 | 2014-04-30 | 北京工业大学 | Wear-resisting white cast iron and preparation method thereof |
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