CN107262696A - A kind of interface fusion process prepares the method and device of metal composite pipe - Google Patents
A kind of interface fusion process prepares the method and device of metal composite pipe Download PDFInfo
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- CN107262696A CN107262696A CN201710453605.XA CN201710453605A CN107262696A CN 107262696 A CN107262696 A CN 107262696A CN 201710453605 A CN201710453605 A CN 201710453605A CN 107262696 A CN107262696 A CN 107262696A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0081—Casting in, on, or around objects which form part of the product pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/003—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using inert gases
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- Pressure Welding/Diffusion-Bonding (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses the method and device that a kind of interface fusion process prepares metal composite pipe.The interface fusion process prepares the device of metal composite pipe, including the heating pipe die and a taper of a cylinder are 1000:1 cast pipe die, the lower end of the heating pipe die connects a wire brush wheel rust remover, wire brush wheel rust remover bottom half is connected with the pilot hole at the top of cast pipe die, and the junction of wire brush wheel rust remover and heating pipe die and cast pipe die pilot hole is sealed with heat-proof silica gel.The interface fusion process prepares the method and device of metal composite pipe, chamber is poured into a mould using being formed between ceramic die and matrix tube layer, heating generator can be used to heat matrix tube layer, and ceramic pipe mold has heat accumulation function, the thermal loss of matrix tube layer can be reduced, the secondary remelting of compound interface is realized, solving conventional metals mould should not be heated at high temperature, the defect of unsuitable temperature control.
Description
Technical field
The present invention relates to the method and device that a kind of interface fusion process prepares metal composite pipe.
Background technology
The metallic composites such as composite plate, multiple tube, compound bar refer to utilize complex technique by a variety of chemistry, mechanical properties
Different metals realizes composite formed by metallurgical binding on interface, and it significantly improves the heat of single metal material
Many performances such as dilatancy, intensity, fracture toughness, impact flexibility, wear resistance, electrical property, magnetic property, thus be widely used
Built to anti-corrosion, pressure vessel manufacturing, electricity, petrochemical industry, medicine, light industry, automobile and other industries.Metal composite with excellent properties is arrived
On matrix flaggy or matrix tube layer, the combination property of material can not only be made to reach most preferably, and rare metal use can also be saved
Amount, reduces the consumption for smelting high-quality steel alloy and saves production cost.The metal composite pipe of various performances has extensive need
Ask and apply, for example, steel pipe used in chemicals ship, matrix tube layer has comprehensive mechanics and welding performance, compound tube layer is anti-corrosion, makes
Multiple tube has two kinds of performances of common tubing and stainless tubing concurrently；Oil and gas pipeline can both have been accomplished outside resistance to by complex technique
Salt corrosion, can accomplish internal halophile and acid corrosion again.By taking pressure vessel Stainless Steel Steel Clad Plate as an example, basic unit uses one
As carbon steel (Q245R, Q345R etc.) have good mechanical performance, cladding has good corrosion resistant with stainless steel (304,316L etc.)
Corrosion energy, both are combined together, it is only necessary to several millimeters of high price stainless steel, substantial saving in cost, and do not change substantially
The various mechanical performances of base material.
At present, the complex method of metal composite pipe mainly has mechanical rolling process, explosion composite method, drawing composite algorithm etc..Make
The composite metal plate or metal composite pipe prepared with traditional processing technology is due to matrix flaggy or matrix tube layer and is combined
The adhesion of flaggy or matrix tube layer is not enough, and not only difficulty is big during composite bed especially on the matrix pipe relatively thin to tube wall,
Multiple tube length limited, and it is easy to breakage occur in use, cause security incident.
The content of the invention
The present invention in order to make up the deficiencies in the prior art there is provided one kind in ordinary carbon steel surface recombination alloy-layer, pass through
The compound method and device for making the interface fusion process that interface cohesion is firm, production cost is low prepare metal composite pipe of liquid-liquid.
The present invention is achieved through the following technical solutions：
A kind of method that interface fusion process prepares metal composite pipe, using following steps：
(1) two ceramic pipe dies are taken, wherein heating pipe die of the ceramic pipe die for cylinder, another ceramic pipe die is taper
For 1000:1 cast pipe die, heat pipe die internal diameter 6mm bigger than rod core diameter, pour into a mould pipe die bottom taper end closure of openings and
Taper end opening diameter is slightly larger than the external diameter of metal composite pipe；The open top of cast pipe die is covered with ceramic wafer, and in ceramic wafer
Middle part offer the pilot hole of a back taper, the bottom internal diameter 1mm bigger than rod core diameter of pilot hole, heating pipe die and gate spool
Mould, pilot hole axis on the same line；The lower end for heating pipe die is connected into a wire brush wheel rust remover, wire brush wheel derusting
Box body bottom is connected with the pilot hole at the top of cast pipe die, and wire brush wheel rust remover is oriented to heating pipe die and cast pipe die
The junction in hole is sealed with heat-proof silica gel；
(2) rod wicking surface is more smooth, and the grease of rod wicking surface is removed by acid solution, is removed using wire brush mechanical friction
Remove the rust of rod wicking surface；Rod wicking surface has obvious pit, and lathe car goes to surface to smooth；The length of rod core is more than heating
The length of pipe die；
(3) suspension hook is welded at the top of rod core, is hung rod core in heating pipe die by suspension hook；
(4) it is blown into CO in the cavity derusted to heating pipe die, steel wire sand between box body and cast pipe die2Gas, makes
CO is full of in above-mentioned cavity2Gas；
(5) cast pipe die top side open up a sprue gate, make heating pipe die, wire brush wheel derusting box body and
A closed cavity is formed between cast pipe die；Calculate the alloying metal liquid consumption that outer layer alloys layer cast needs, alloying metal liquid
Consumption equivalent to alloy-layer melt after volume, by desired amount of alloying metal liquid at the uniform velocity pour into cast pipe die in, alloy
The temperature of molten metal is more than 30 DEG C of rod core and high value in alloy-layer fusing point；
(6) by rod core, through pilot hole, gradually slow device descending at constant speed, to while heating the alloying metal liquid in pipe die, is used
Heating generator is heated in the lower end outside of heating pipe die, rod wicking surface temperature is reached below its fusing point 20 DEG C, simultaneously
Start wire brush wheel rust remover, further remove the oxide skin and other impurities of rod wicking surface after heating；Heat at the top of pipe die
Pilot hole plays guide effect to rod core, rod core is smoothly sent into cast pipe die；
(7) treat that the bottom of rod core touches the bottom surface of cast pipe die, remove heating pipe die and steel-wire sanding wheel rust remover；Due to
Rod core length is more than the length of cast pipe die, so when rod core is drop to inside cast pipe die completely, and rod core is vertical and rod core
The axis collinear of axis and cast pipe die；Rod core is during decline, and the alloying metal liquid liquid level in cast pipe die rises, directly
To rod core is surrounded, after the solidification completely of alloying metal liquid, composite bar is obtained；
(8) treat that the composite bar surface temperature that step (7) is obtained is down to 700 DEG C, slowly carried by the suspension hook at the top of rod core
Composite bar is played, is deviate from from cast pipe die；
(9) composite bar obtained in step (8) feeding heating furnace is heated to 1100-1250 DEG C, come out of the stove；
(10) hollow billet is made in the composite bar perforated unit perforation obtained step (9), by hollow billet through sinking sizing mill
Group carries out tube reducing, sizing, shaping；
(11) hollow billet for obtaining step (10) be heat-treated, aligned, crop, inspection, obtain surface recombination alloy-layer
Metal composite pipe.
When the fusing point of alloying metal liquid is higher than the fusing point of rod core in step (5), the temperature of alloying metal liquid is alloying metal
More than 30 DEG C of liquid fusing point.
When the fusing point of alloying metal liquid is less than the fusing point of rod core in step (5), the temperature of alloying metal liquid is rod core fusing point
More than 30 DEG C.
A kind of interface fusion process prepares the device of metal composite pipe, including the heating pipe die and a taper of a cylinder are
1000:1 cast pipe die, the internal diameter 6mm bigger than rod core diameter of the heating pipe die pours into a mould the bottom taper end closure of openings of pipe die
And taper end opening diameter is slightly larger than the external diameter of metal composite pipe；The open top of cast pipe die is covered with ceramic wafer, and in ceramics
The pilot hole of a back taper, the bottom internal diameter 1mm bigger than rod core diameter of pilot hole, heating pipe die and cast are offered in the middle part of plate
Pipe die, pilot hole axis on the same line；The lower end of the heating pipe die connects a wire brush wheel rust remover, wire brush wheel
Rust remover bottom half is connected with the pilot hole at the top of cast pipe die, wire brush wheel rust remover and heating pipe die and cast pipe die
The junction of pilot hole is sealed with heat-proof silica gel；It is connected in the top side of cast pipe die provided with one with gate spool mold cavity
Pouring basin, surround in the lower end outside of heating pipe die and is provided with a heating generator.
Interface fusion process of the present invention prepares the method and device of metal composite pipe, and (1) is using ceramic die and matrix tube layer
Between form cast chamber, heating generator can be used to heat matrix tube layer, and ceramic pipe mold has heat accumulation function, can reduce
The thermal loss of matrix tube layer, realizes the secondary remelting of compound interface, and solving conventional metals mould should not be heated at high temperature, unsuitable
The defect of temperature control；(2) by the pouring temperature of rational alloying metal liquid, alloying metal liquid is made to pour into basal body pipe layer surface
Afterwards, both can guarantee that melts matrix tube layer outer surface, will not all melt again, matrix tube layer is melted with alloying metal liquid depth
Close, it is ensured that Interface Cracking phenomenon is occurred without in the operation of rolling, rolling mill practice adjustable range is wider；(3) when particulate metal is poured into a mould,
Pour into a mould intracavitary and be full of CO2, it is to avoid faying face is easily aoxidized with air contact, and oxide occur prevents interface from combining.To sum up, originally
Inventive method technique is simple, and production cost is low, and the matrix tube layer for the metal composite pipe produced and the adhesion of alloy-layer are strong,
The quality of metal composite pipe is ensure that, the potential safety hazard in production process is reduced.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the invention.
In figure, 1, heating pipe die, 2, cast pipe die, 3, rod core, 4, ceramic wafer, 5, pilot hole, 6, wire brush wheel rust remover,
7th, suspension hook, 8, heating generator, 9, pouring basin.
Embodiment
With reference to embodiment, the invention will be further described, but the invention is not limited in this, the system in embodiment
Preparation Method is customary preparation methods, is no longer described in detail.
Embodiment 1：
A kind of method that interface fusion process prepares metal composite pipe, using following steps：
(1) two ceramic pipe dies are taken, wherein heating pipe die 1 of the ceramic pipe die for cylinder, internal diameter and length are φ
165mm*1200mm, another ceramic pipe die is that taper is 1000:1 cast pipe die 2, internal diameter and length are φ 169mm*
1000mm, and the diameter at butt end of cast pipe die 2 is φ 170.2mm, heats the internal diameter 6mm bigger than rod core diameter of pipe die 1, i.e. cut-off
Footpath is φ 159mm, and wall thickness 30mm 20# steel pipes are used as rod core；The open top ceramic wafer 4 of cast pipe die 2 is covered, and in pottery
The middle part of porcelain plate 4 offers the pilot hole 5 of a back taper, bottom the internal diameter 1mm bigger than rod core diameter, i.e. φ of pilot hole 5
166mm；Heat pipe die 1 and cast pipe die 2, pilot hole 5 axis on the same line；The lower end connection one of pipe die 2 will be heated
Wire brush wheel rust remover 5, the bottom half of wire brush wheel rust remover 6 is connected with the pilot hole 5 at the top of cast pipe die 1, wire brush wheel
The junction of rust remover 6 and heating pipe die 1 and the cast pilot hole 5 of pipe die 2 is sealed with heat-proof silica gel；
(2) surface of rod core 3 is more smooth, and the grease on the surface of rod core 3 is removed by acid solution, wire brush mechanical friction is used
Remove the rust on the surface of rod core 3；There is obvious pit on the surface of rod core 3, and lathe car goes to surface to smooth；The length of rod core 3 is big
In the length of heating pipe die 1；
(3) suspension hook 7 is welded at the top of rod core 3, is hung rod core 3 in heating pipe die 1 by suspension hook 7；
(4) it is blown into high-purity CO into the cavity between heating pipe die 1, the casing of steel wire sand rust remover 6 and cast pipe die 22
Gas, makes to be full of CO in above-mentioned cavity2Gas, while pouring into a mould 2 to 1000 DEG C of pipe die with Flame of Natural Gas preheating；
(5) sprue gate is opened up in the top side of cast pipe die 2, makes heating pipe die 1, the casing of wire brush wheel rust remover 6
And form a closed cavity between cast pipe die 2；The alloying metal liquid consumption that calculating outer layer alloys layer cast needs is 20 public
Jin, the steel alloy of melting 2205 in AOD furnace is at the uniform velocity poured into 20 kilogram of 2205 alloying metal liquid in cast pipe die 2,2205 alloys
Molten metal temperature is 1700 DEG C；
(6) by rod core 3, through pilot hole 5, gradually slow device descending at constant speed, to while heating the alloying metal liquid in pipe die 1, makes
Lower end outside with heating generator 8 in heating pipe die 1 is heated, and the surface temperature of rod core 3 is reached 1350 DEG C, is started simultaneously
Wire brush wheel rust remover 6, further removes the oxide skin and other impurities on the surface of rod core 3 after heating；Leading at the top of heating pipe die 1
Guide effect is played to rod core 3 to hole 5, making rod core 3, smoothly feeding cast pipe die 2 is interior and fixed；
(7) treat that the bottom of rod core 3 touches the bottom surface of cast pipe die 2, remove heating pipe die 1 and steel-wire sanding wheel rust remover 6；
Because the length of rod core 3 is more than the length of cast pipe die 2, so when rod core 3 drop to cast 2 inside of pipe die completely, rod core 3 is erected
The axis collinear of the straight and axis of rod core 3 and cast pipe die 2；Rod core 3 is during decline, the alloying metal in cast pipe die 2
Liquid liquid level rises, until rod core 3 is surrounded, after the solidification completely of alloying metal liquid, obtains composite bar；
(8) treat that the composite bar surface temperature that step (7) is obtained is down to 700 DEG C, the suspension hook 7 by the top of rod core 3 is slow
Lift composite bar, deviate from from cast pipe die 2, plasma cut blind pipe end；
(9) composite metal blank obtained in step (8) feeding heating furnace is heated to 1100-1250 DEG C, come out of the stove；
(10) the composite bar feeding perforation unit obtained step (9) carries out perforation and hollow billet is made, when the step is completed
The temperature of composite bar is 1050-1080 DEG C；Hollow billet is subjected to tube reducing through tube reducing sizing base group at 930-950 DEG C, it is sizing, whole
Shape, obtains specification φ 100mm*12mm*4274mm hollow billet, and composite bed thickness is 1.7mm；
(11) hollow billet for obtaining step (10) be heat-treated, aligned, crop, inspection, obtain surface recombination alloy-layer
Metal composite pipe, specific method is：
(11.1) the hollow billet surface acid-washing de-scaling for obtaining step (10), then carries out wearing water quenching to room temperature；
(11.2) 1100 DEG C of solution treatment will be heated rapidly to after the hollow billet crop after step (11.1) processing, be then incubated
2 hours；
(11.3) hollow billet for obtaining step (11.2) carries out wearing water quenching to room temperature；
(11.4) hollow billet that step (11.3) is obtained detected a flaw, aligned, scaled, polished, obtain surface recombination alloy
The metal composite pipe of layer.
The mechanical index of metal composite pipe made from the embodiment 1 of table 1
| Standard specimen | Yield strength MPa | Tensile strength MPa |
| 1 | 316.8 | 489.2 |
| 2 | 302.1 | 469.3 |
| 3 | 304.3 | 474.4 |
From table 1, metal composite pipe performance made from embodiment 1 meets conjunction and required.
Embodiment 2：
The present embodiment and the difference of embodiment 1 are：The fusing point of alloying metal liquid is molten higher than rod core in step (5)
During point, the temperature of alloying metal liquid is alloying metal liquid fusing point more than 30 DEG C.
Embodiment 3：
The present embodiment and the difference of embodiment 1 are：The fusing point of alloying metal liquid is molten less than rod core in step (5)
During point, the temperature of alloying metal liquid is rod core fusing point more than 30 DEG C.
As shown in figure 1, a kind of interface fusion process prepares the device of metal composite pipe, include the heating pipe die 1 of a cylinder
It is 1000 with a taper:1 cast pipe die 2, the internal diameter of the heating pipe die 1 pours into a mould the bottom of pipe die 2 than the big 6mm of diameter of rod core 3
Portion's taper end closure of openings and taper end opening diameter are slightly larger than the external diameter of metal composite pipe；Pour into a mould the open top ceramics of pipe die 2
Plate 4 is covered, and offers the pilot hole 5 of a back taper at the middle part of ceramic wafer 4, and the bottom internal diameter of pilot hole 5 is than the diameter of rod core 3
Big 1mm, heating pipe die 1 and cast pipe die 2, pilot hole 5 axis on the same line；The lower end connection of the heating pipe die 2
One wire brush wheel rust remover 6, the bottom half of wire brush wheel rust remover 6 is connected with the pilot hole 5 at the top of cast pipe die 2, wire brush
The junction of wheel rust remover 6 and heating pipe die 1 and the cast pilot hole 5 of pipe die 2 is sealed with heat-proof silica gel；In cast pipe die 2
Pouring basin 9 of the top side provided with one with the cast intracavity inter-connection of pipe die 2, surround in the lower end outside of heating pipe die 2 and is provided with one
Heating generator 8.
Claims (4)
1. a kind of method that interface fusion process prepares metal composite pipe, it is characterized in that：Comprise the following steps：
(1) two ceramic pipe dies are taken, wherein a ceramic pipe die is the heating pipe die of cylinder, another ceramic pipe die is that taper is
1000:1 cast pipe die, heats the internal diameter 6mm bigger than rod core diameter of pipe die, pours into a mould the bottom taper end closure of openings of pipe die and thin
End opening diameter is slightly larger than the external diameter of metal composite pipe；The open top of cast pipe die is covered with ceramic wafer, and in ceramic wafer
Middle part offers the pilot hole of a back taper, the bottom internal diameter 1mm bigger than rod core diameter of pilot hole, heating pipe die and gate spool
Mould, pilot hole axis on the same line；The lower end for heating pipe die is connected into a wire brush wheel rust remover, wire brush wheel derusting
Box body bottom is connected with the pilot hole at the top of cast pipe die, and wire brush wheel rust remover is oriented to heating pipe die and cast pipe die
The junction in hole is sealed with heat-proof silica gel；
(2) rod wicking surface is more smooth, and the grease of rod wicking surface is removed by acid solution, and rod is removed using wire brush mechanical friction
The rust of wicking surface；Rod wicking surface has obvious pit, and lathe car goes to surface to smooth；The length of rod core is more than heating pipe die
Length；
(3) suspension hook is welded at the top of rod core, is hung rod core in heating pipe die by suspension hook；
(4) it is blown into CO in the cavity derusted to heating pipe die, steel wire sand between box body and cast pipe die2Gas, makes above-mentioned sky
Intracavitary is full of CO2Gas；
(5) sprue gate is opened up in the top side of cast pipe die, makes heating pipe die, wire brush wheel derusting box body and cast
A closed cavity is formed between pipe die；Calculate the alloying metal liquid consumption that outer layer alloys layer cast needs, the use of alloying metal liquid
The volume after being melted equivalent to alloy-layer is measured, desired amount of alloying metal liquid is at the uniform velocity poured into cast pipe die, alloying metal
The temperature of liquid is more than 30 DEG C of rod core and high value in alloy-layer fusing point；
(6) by rod core, through pilot hole, gradually slow device descending at constant speed, to while heating the alloying metal liquid in pipe die, uses high frequency
Heater is heated in the lower end outside of heating pipe die, rod wicking surface temperature is reached below its fusing point 20 DEG C, is started simultaneously
Wire brush wheel rust remover, further removes the oxide skin and other impurities of rod wicking surface after heating；Heat the guiding at the top of pipe die
Guide effect is played in hole to rod core, rod core is smoothly sent into cast pipe die；
(7) treat that the bottom of rod core touches the bottom surface of cast pipe die, remove heating pipe die and steel-wire sanding wheel rust remover；Due to rod core
Length is more than the length of cast pipe die, so when rod core is drop to inside cast pipe die completely, and rod core is vertical and rod wire mandrel
Axis collinear with pouring into a mould pipe die；Rod core is during decline, and the alloying metal liquid liquid level in cast pipe die rises, until will
Rod core is surrounded, and after the solidification completely of alloying metal liquid, obtains composite bar；
(8) treat that the composite bar surface temperature that step (7) is obtained is down to 700 DEG C, slowly lifted by the suspension hook at the top of rod core multiple
Bar is closed, is deviate from from cast pipe die；
(9) composite metal blank obtained in step (8) feeding heating furnace is heated to 1100-1250 DEG C, come out of the stove；
(10) hollow billet is made in the compound bar billet perforated unit perforation obtained step (9), and hollow billet is entered through sinking sizing mill group
Row tube reducing, sizing, shaping；
(11) hollow billet for obtaining step (10) be heat-treated, aligned, crop, inspection, obtain the gold of surface recombination alloy-layer
Belong to multiple tube.
2. the method that interface fusion process according to claim 1 prepares metal composite pipe, it is characterized in that：Closed in step (5)
When the fusing point of golden molten metal is higher than the fusing point of rod core, the temperature of alloying metal liquid is alloying metal liquid fusing point more than 30 DEG C.
3. the method that interface fusion process according to claim 1 prepares metal composite pipe, it is characterized in that：Closed in step (5)
When the fusing point of golden molten metal is less than the fusing point of rod core, the temperature of alloying metal liquid is rod core fusing point more than 30 DEG C.
4. the device of metal composite pipe is prepared according to any described interface fusion process of claim 1-3, it is characterized in that：Including one
The heating pipe die and a taper of cylinder are 1000:1 cast pipe die, the internal diameter 6mm bigger than rod core diameter of the heating pipe die,
The bottom taper end closure of openings and taper end opening diameter for pouring into a mould pipe die are slightly larger than the external diameter of metal composite pipe；Pour into a mould the top of pipe die
Opening is covered with ceramic wafer, and offers in the middle part of ceramic wafer the pilot hole of a back taper, and the bottom internal diameter of pilot hole compares rod
The big 1mm of core diameter, heating pipe die and cast pipe die, pilot hole axis on the same line；The lower end of the heating pipe die connects
A wire brush wheel rust remover is connect, wire brush wheel rust remover bottom half is connected with the pilot hole at the top of cast pipe die, wire brush wheel
The junction of rust remover and heating pipe die and cast pipe die pilot hole is sealed with heat-proof silica gel；In the top side of cast pipe die
Provided with a pouring basin being connected with gate spool mold cavity, it is surround in the lower end outside of heating pipe die and is provided with a heating generator.
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| CN2017101147399 | 2017-02-28 | ||
| CN201710114739 | 2017-02-28 |
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| CN105522126A (en) * | 2015-11-11 | 2016-04-27 | 丹阳恒庆复合材料科技有限公司 | Manufacturing technique and equipment for high-performance composite roller shaft |
| CN105983578A (en) * | 2015-01-30 | 2016-10-05 | 重庆君卓机械有限公司 | Production process of hot-rolled steel tubes |
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| JPH0970655A (en) * | 1995-09-08 | 1997-03-18 | Fujikoo:Kk | Member for hot-rolling equipment in iron works excellent in wear resistance and corrosion resistance |
| CN1390663A (en) * | 2002-06-14 | 2003-01-15 | 韩国强 | Equipment and method for casting bimetal roller |
| CN102581250A (en) * | 2012-03-27 | 2012-07-18 | 新兴铸管股份有限公司 | Centrifugally cast TP310Cb/T11 bimetal composite tube blank and method for producing same |
| CN104174823A (en) * | 2014-09-01 | 2014-12-03 | 北京科技大学 | Clad material solid/liquid composite continuous-casting forming device and method |
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| CN105522126A (en) * | 2015-11-11 | 2016-04-27 | 丹阳恒庆复合材料科技有限公司 | Manufacturing technique and equipment for high-performance composite roller shaft |
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| CN107262696B (en) | 2019-05-07 |
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Effective date of registration: 20221226 Address after: Room 2016, Building 14, A-2 District, Huazhi Vientiane World, No. 2 Maoling Mountain Road, Jinan, Shandong 250000 Patentee after: Shandong Railway Construction Zhenpin Engineering Management Co.,Ltd. Address before: 250014 Room 601, unit 5, building 12, No. 1-1, District 3, dianliu new village, Lixia District, Jinan City, Shandong Province Patentee before: Sun Jinteng Patentee before: Sun Xuexian |