CN101586698A - Multi-metal wear-resistant steel pipe and manufacture method - Google Patents
Multi-metal wear-resistant steel pipe and manufacture method Download PDFInfo
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- CN101586698A CN101586698A CNA2008100242274A CN200810024227A CN101586698A CN 101586698 A CN101586698 A CN 101586698A CN A2008100242274 A CNA2008100242274 A CN A2008100242274A CN 200810024227 A CN200810024227 A CN 200810024227A CN 101586698 A CN101586698 A CN 101586698A
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Abstract
Multi-metal wear-resistant steel pipe and manufacture method.The present invention relates to a kind of multi-metal wear-resistant steel pipe and manufacture method.Comprise following component, the weight percentage of each component is: iron powder 82%-88%, aluminium powder 7%-12%, silica 0.1%-0.3%, vanadium iron 0.1%-0.3%, ferro-niobium 0.2%-0.5%, high ferrochrome 1%-1.5%, nickel 0.8%-1.2%, copper 1%-5%.The present invention adopts the many metallic steel pipe from combustion technology production to have unique Organizational Structure.Unique Organizational Structure has determined its excellent comprehensive performances again.It not only resistance to wears, corrosion-resistant, high temperature resistant, high hardness and intensity are arranged, and have the good anti-mechanical shock and the combination property of thermal shock.
Description
Technical field
The present invention relates to a kind of multi-metal wear-resistant steel pipe and manufacture method.
Background technique
Steel pipe is widely used in industries such as electric power, metallurgy, coal, oil, chemical industry, machinery with its good comprehensive performances, make wear-resistant steel pipe now and often adopt the spun casting manufactured, can effectively improve pipe quality, its operation is few, the process-cycle is short, can improve the structure property of steel duct, and its quality is significantly improved.
Its material mixture ratio is now: iron powder 90%, aluminium powder 9.8%, silica 0.2%, defective is: it is big to be prone to pore, slag inclusion, tissue looseness, amount of deformation in the production process, corundum layer easily comes off etc., and it the most important thing is that the above pipe fitting of heavy caliber after having added multicomponent alloy (φ 730) can't produce with centrifuge method.
Summary of the invention
The present invention is directed to above-mentioned defective, purpose is to provide a kind of can further improve tube quality, and can enlarge the multi-metal wear-resistant steel pipe and the manufacture method of centrifuge method application area.
Technological scheme of the present invention is: the present invention includes following component, the weight percentage of each component is: iron powder 82%-88%, aluminium powder 7%-12%, silica 0.1%-0.3%, vanadium iron 0.1%-0.3%, ferro-niobium 0.2%-0.5%, high ferrochrome 1%-1.5%, nickel 0.8%-1.2%, copper powder 1%-5%.
Processing method comprises following process step:
(1) batch mixing: with the powder of described each component of claim 1, put into batch mixer according to weight percentage and mix, make it be mixed into even shape;
(2) spun casting: steel pipe is packed in the pipe die of centrifuge, and mixed material is distributed in the steel pipe with distributor, steel pipe two ends installing end cap, centrifugal motor is opened to rotating speed 600-1000 rev/min in the back, igniter ignition simultaneously, its temperature is greater than 2400 ℃, endurance 80-100 second, makes multi-metal wear-resistant steel pipe;
(3) cooling: water promptly takes out multi-metal wear-resistant steel pipe to pipe die machine cooling after the shutdown in process of production, after be placed on further cooling in the physical environment:
(4) check, put in storage: packing warehouse-in after by standard multi-metal wear-resistant steel pipe being tested.
The present invention has following characteristics:
(1) be adjusted into 600-1000 rev/min by the control of motor speed in the production process is changeed by per minute more than 2000, solved in the same industry after having added multicomponent alloy, diameter 730 above pipe fittings can't be with the technical barrier of centrifuge method production.
(2) good combination property has solved and has occurred common casting defects such as pore, slag inclusion, tissue looseness, amount of deformation be big in the pipe production.
(3) on the basis of traditional abrasion-proof pipe, brown iron oxide, aluminium powder binary alloy, add vanadium iron (Fev), ferro-niobium (FeNb), high ferrochrome (FeCr), nickel (Ni), copper (Cu) etc. again.The multicomponent alloy new material that this product uses.Make this material both have the wear resistance of high alloy casting, have higher mechanical strength and shock resistance again.Improve the weldability of material simultaneously.
(4) wear resistance is higher: extraordinary multi-metal wear-resistant steel pipe adds after the Fev FeNb FeCr NiCu, variation has taken place again in the material metallographic structure, and crystal grain is more fine and closely woven, and intensity is higher, and make the further passivation of metallic matrix, thereby make raw-material wear-resisting property be improved (HV1500-1800)
(5) high temperature resistant, corrosion resistance is stronger, Ni element in the alloy, the content of Cu element has directly determined the heatproof index of material, the Cr element, the content of Cu element has determined the corrosion resistance of material, and these elemental compositions reasonably combined makes this novel extraordinary multi-metal wear-resistant steel pipe possess above-mentioned multiple premium properties simultaneously, can adapt to the use of various abominable industrial and mineral conditions, become current best Updated product.
Description of drawings
Accompanying drawing is a process flow diagram of the present invention
Embodiment
Embodiment one:
The present invention includes following component, the weight percentage of each component is: iron powder 85%, aluminium powder 9%, silica 0.2%, vanadium iron 0.2%, ferro-niobium 0.3%, high ferrochrome 1.3%, nickel 1%, copper powder 3%.
Its processing method comprises following process step:
(1) batch mixing: with the powder of described each component of claim 1, put into batch mixer according to weight percentage and mix, make it be mixed into even shape;
(2) spun casting: steel pipe is packed in the pipe die of centrifuge, and mixed material is distributed in the steel pipe with distributor, steel pipe two ends installing end cap, centrifugal motor is opened to 800 rev/mins of rotating speeds in the back, igniter ignition simultaneously, its temperature is 2400 ℃, 90 seconds endurance, makes multi-metal wear-resistant steel pipe;
(3) cooling: in process of production to pipe die machine cooling, shut down the back and from the pipe die machine, take out multi-metal wear-resistant steel pipe, after be placed on further cooling in the physical environment:
(4) check, put in storage: packing warehouse-in after by standard multi-metal wear-resistant steel pipe being tested.
Steel pipe of the present invention can cut into different size according to actual needs, to produce the steel pipe that is fit to needs, during actual the use, can many multi-metal wear-resistant steel pipes be welded, to meet the needs of according to the different occasions of using.
Completely different with traditional processing technology, adopt many metallic steel pipe to have unique Organizational Structure from combustion technology production.Unique Organizational Structure has determined its excellent comprehensive performances again.It not only resistance to wears, corrosion-resistant, high temperature resistant, high hardness and intensity are arranged, and have the good anti-mechanical shock and the combination property of thermal shock.
Many metals steel pipe and traditional steel pipe, abrasion resistance alloy casting steel tube, glass-ceramic tubre and the difference that steel is moulded, steel rubber pipe etc. has internal.Many metallic steel outer tube layer is a seamless steel pipe, and internal layer is many metal layers.Metal layer hardness is equivalent to tungsten-cobalt hard alloy up to HV1100-1400, and wear resistance is higher more than 20 times than carbon steel tube.It mainly is the metal layer of a little millimeters thick of inner layer that many metals steel pipe resistance to wears, and this both by composition and tissue, has had a qualitative leap by thickness is wear-resistant than wear-resistant alloy cast steel pipe, stoneware pipe, glass-ceramic tubre again.
Many metals steel pipe fusing point is 2400 ℃, and many metal layers and steel layer are because the technological reason structure is special, and stress field is also special.Metal layer is subjected to pressure stress at normal temperatures, and the steel layer is subjected to tensile stress.Have only temperature to be elevated to more than 500 ℃, because the two thermal expansion coefficient is different, the stress field that the new stress field that thermal expansion produces just makes many metals steel pipe Central Plains exist is cancelled out each other, and makes metal layer and steel pipe layer be in the stress equilibrium state.When temperature is elevated to 800 ℃, the metal steel pipe is put into cold water, repeated multiple times, metal layer is crack or burst apart not also, shows unrivaled thermal shock resistance, and this performance is of great use in engineering construction.Because skin is an iron and steel, internal layer heats up and does not also burst apart in addition, in construction, can weld flange, purging mouth, explosion proof door etc., also available direct welding method is carried out pipeline and is connected, this than wear-resistant alloy cast steel pipe, glass-ceramic tubre and steel mould, steel rubber pipe is difficult for welding and maybe can not welds even better in construction.Many metals steel pipe mechanical shock resistance might as well, transport, install, beat and two stands between when conducting oneself with dignity bending deflection, metal layer does not all break and comes off.
Many metallic steel inner tube layer is a densified metal layer, acid fastness 96-98%.Many metals steel pipe corrosion resistance is than high ten times of stainless steels after measured.
Embodiment two:
The present invention includes following component, the weight percentage of each component is: iron powder 88%, aluminium powder 7%, silica 0.2%, vanadium iron 0.2%, ferro-niobium 0.2%, high ferrochrome 1.2%, nickel 1.2%, copper 2%.
Its processing method comprises following process step:
(1) batch mixing:,, make it be mixed into even shape according to putting into batch mixer after the weight percentage mixing with the powder of described each component of claim 1;
(2) spun casting: steel pipe is packed in the pipe die of centrifuge, and mixed material is distributed in the steel pipe with distributor, steel pipe two ends installing end cap, centrifugal motor is opened to 900 rev/mins of rotating speeds in the back, igniter ignition simultaneously, 2600 ℃ of its temperature, are made multi-metal wear-resistant steel pipe at 90 seconds endurance;
(3) cooling: in process of production the pipe die machine is cooled off, shuts down the back and from pipe die, take out multi-metal wear-resistant steel pipe, after be placed on further cooling in the physical environment:
(4) check, put in storage: packing warehouse-in after by standard multi-metal wear-resistant steel pipe being tested.
Steel pipe of the present invention can cut into different size according to actual needs, to produce the steel pipe that is fit to needs, during actual the use, can many multi-metal wear-resistant steel pipes be welded, to meet the needs of according to the different occasions of using.
Claims (2)
1, multi-metal wear-resistant steel pipe and manufacture method, it is characterized in that, comprise following component, the weight percentage of each component is: iron powder 82%-88%, aluminium powder 7%-12%, silica 0.1%-0.3%, vanadium iron 0.1%-0.3%, ferro-niobium 0.2%-0.5%, high ferrochrome 1%-1.5%, nickel 0.8%-1.2%, copper 1%-5%.
2, multi-metal wear-resistant steel pipe and manufacture method is characterized in that, comprise following process step:
(1) batch mixing: with the powder of described each component of claim 1, put into batch mixer according to weight percentage and mix, make it be mixed into even shape;
(2) spun casting: steel pipe is packed in the pipe die of centrifuge, and mixed material is distributed in the steel pipe with distributor, steel pipe two ends installing end cap, open centrifugal motor to rotating speed 600-1000 rev/min, igniter ignition simultaneously, its temperature is greater than 2400 ℃, endurance 80-100 second, make powder carry out frit reaction, in centrifuge, press the proportion size separation, make multi-metal wear-resistant steel pipe;
(3) cooling: in the production process pipe die machine is cooled off, shuts down the back and from pipe die, take out multi-metal wear-resistant steel pipe, after be placed on further cooling in the physical environment:
(4) check, put in storage: packing warehouse-in after by standard multi-metal wear-resistant steel pipe being tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100242274A CN101586698A (en) | 2008-05-23 | 2008-05-23 | Multi-metal wear-resistant steel pipe and manufacture method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100242274A CN101586698A (en) | 2008-05-23 | 2008-05-23 | Multi-metal wear-resistant steel pipe and manufacture method |
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| Publication Number | Publication Date |
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| CN101586698A true CN101586698A (en) | 2009-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100242274A Pending CN101586698A (en) | 2008-05-23 | 2008-05-23 | Multi-metal wear-resistant steel pipe and manufacture method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048598A (en) * | 2016-06-29 | 2016-10-26 | 巢湖鹏远金属焊管有限公司 | Method for enhancing strength of metal welded pipes |
| CN106122680A (en) * | 2016-06-29 | 2016-11-16 | 巢湖鹏远金属焊管有限公司 | A kind of high-strength corrosion-resisting straight welded pipe |
| CN108612919A (en) * | 2018-04-27 | 2018-10-02 | 胡建芳 | A kind of phase shell type specialty metal seamless pipe and preparation method thereof |
-
2008
- 2008-05-23 CN CNA2008100242274A patent/CN101586698A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048598A (en) * | 2016-06-29 | 2016-10-26 | 巢湖鹏远金属焊管有限公司 | Method for enhancing strength of metal welded pipes |
| CN106122680A (en) * | 2016-06-29 | 2016-11-16 | 巢湖鹏远金属焊管有限公司 | A kind of high-strength corrosion-resisting straight welded pipe |
| CN108612919A (en) * | 2018-04-27 | 2018-10-02 | 胡建芳 | A kind of phase shell type specialty metal seamless pipe and preparation method thereof |
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Open date: 20091125 |