CN105861916A - Method for manufacturing blades used for impeller - Google Patents
Method for manufacturing blades used for impeller Download PDFInfo
- Publication number
- CN105861916A CN105861916A CN201610221339.3A CN201610221339A CN105861916A CN 105861916 A CN105861916 A CN 105861916A CN 201610221339 A CN201610221339 A CN 201610221339A CN 105861916 A CN105861916 A CN 105861916A
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- China
- Prior art keywords
- blade
- preparation
- molten steel
- cutting edge
- impeller
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 49
- 238000005520 cutting process Methods 0.000 claims abstract description 38
- 238000010894 electron beam technology Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 35
- 239000010959 steel Substances 0.000 claims description 35
- 238000002360 preparation method Methods 0.000 claims description 32
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 239000001301 oxygen Substances 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 15
- 239000002893 slag Substances 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 14
- 229910021529 ammonia Inorganic materials 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 238000010494 dissociation reaction Methods 0.000 claims description 12
- 230000005593 dissociations Effects 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 229910052748 manganese Inorganic materials 0.000 claims description 11
- 239000004411 aluminium Substances 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000003974 emollient agent Substances 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 239000002199 base oil Substances 0.000 claims description 8
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 8
- 235000019792 magnesium silicate Nutrition 0.000 claims description 8
- 239000000391 magnesium silicate Substances 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 7
- UNYOJUYSNFGNDV-UHFFFAOYSA-M magnesium monohydroxide Chemical compound [Mg]O UNYOJUYSNFGNDV-UHFFFAOYSA-M 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 5
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 5
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 238000005261 decarburization Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 230000036284 oxygen consumption Effects 0.000 claims description 5
- 239000000161 steel melt Substances 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000005461 lubrication Methods 0.000 claims 1
- 238000005121 nitriding Methods 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 12
- 238000009776 industrial production Methods 0.000 abstract description 2
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 210000001138 tear Anatomy 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 125000004429 atom Chemical group 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 125000004430 oxygen atom Chemical group O* 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- -1 Hydroxyl magnesium silicate Chemical compound 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 206010039792 Seborrhoea Diseases 0.000 description 1
- GINSYGVERPJSHV-UHFFFAOYSA-N [Mg].OO[Si](O)(O)O Chemical compound [Mg].OO[Si](O)(O)O GINSYGVERPJSHV-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a method for manufacturing blades used for an impeller. The impeller comprises the blades, a shaft and a cylinder sleeve. The shaft is installed in the cylinder sleeve in a matched mode, specific lubricating components are arranged in a friction pair between the shaft and the cylinder sleeve, the blades are made from specific materials, and anti-abrasion cutting edges are welded to the edges of the blades through electron beams. By means of specific component selection and the manufacturing method, the blades excellent in abrasion resistance can be obtained, the problem that the blades are prone to abrasion is solved, and the manufacturing method has good application prospects and industrial production potentials.
Description
Technical field
The present invention relates to the preparation method of the parts of a kind of sickle pump, particularly relate to a kind of for impeller (this leaf
Wheel is applied to sickle pump) the preparation method of blade, belong to wheel pump preparing technical field.
Background technology
Sickle pump is widely used in the medium delivery pump in the field such as building supply, chemical industry, and its structure is by the pump housing, leaf
Wheel, pump shaft, pump cover, motor form, and are shaped with the pump chamber accommodating impeller in the pump housing, and pump chamber is imported and exported with the pump housing
Connection, one end of pump shaft is fixing with impeller central to be connected, and the other end is fixing with motor to be connected, by driven by motor
Impeller rotates and from pump housing import, medium is pumped to outlet, it is achieved medium pressure-increasing unit.
But, owing to the impeller of sickle pump can collide with particle at work, inevitably produce mill
Damage.And existing impeller is in long-term abrasion, it may appear that situations below:
1, the less stable rotated, i.e. friction pair is easily impaired under the frictional force of fluid, and rubbing surface occurs
The most serious abrasion；
2, the impeller work surface friction of sickle pump is serious, and especially leading edge cutting edge portion abrasion is the most serious.
Meanwhile, the two factor is also interactional.Such as, the abrasion of friction pair causes impeller to rotate surely
Qualitative variation, can make impeller work surface steady not, be easiest to cause the abrasion of local.And impeller work
The abrasion in face, then can make impeller discontinuity, friction pair is caused damage.
Just because of this, start with from friction pair and impeller work surface both direction simultaneously, develop a kind of novel
Impeller, not only has urgent researching value, it may have good economic benefit and commercial Application potentiality, this
The power place that the present invention is accomplished just and basis are leaned on.
Summary of the invention
In order to overcome the defect of existing sickle pump as indicated above, this is conducted in-depth research by the present inventor,
After having paid a large amount of creative work, thus complete the present invention.
Specifically, the technical problem to be solved is: provide the system of a kind of blade for impeller
Preparation Method, to solve the technical problem that current blade easily weares and teares.
For solving above-mentioned technical problem, the technical scheme is that and a kind of blade for impeller is provided
Preparation method, described impeller includes that blade, axle and cylinder sleeve, the cooperation of described axle are installed in described cylinder sleeve, and
Being provided with specific emollient component in friction pair between described axle and described cylinder sleeve, described emollient component is with weight
Amount percentages, containing hydroxyl magnesium silicate 5-10%, surplus is lube base oil；
Described blade uses following certain material to be fabricated by, and described certain material is with percentage by weight as list
Position, containing C 3.3-3.5, Si 2.1-2.3, Mn 1.1-1.3, P 0.15-0.17, S 0.1-0.2, Cr 0.41-0.45,
Mo 0.61-0.71, Cu 0.51-0.56, B 0.062-0.072, Ni 0.9-1.1, surplus is Fe and can not keep away
The impurity exempted from；
As the technical scheme of a kind of optimization, described certain material in units of percentage by weight, containing C 3.4,
Si 2.2, Mn 1.2, P 0.16, S 0.15, Cr 0.42, Mo 0.65, Cu 0.53, B 0.065, Ni 1.0,
Surplus is Fe and inevitable impurity.
It addition, the edge of described blade utilizes electron beam to be welded with wear-resisting cutting edge, described wear-resisting cutting edge is with weight
Percentage ratio is unit, containing C 2.8-3.2, Si 1.6-2.0, Mn 0.8-1.0, P ＜ 0.13, S ＜ 0.09, Cr
0.41-0.45, Mo 0.61-0.71, Cu 0.51-0.56, B 0.08-0.09, surplus is Fe and inevitably
Impurity.
As the technical scheme of a kind of optimization, described wear-resisting cutting edge in units of percentage by weight, containing C 3.0,
Si 1.7, Mn 0.9, P ＜ 0.13, S ＜ 0.09, Cr 0.43, Mo 0.66, Cu 0.54, B 0.09, surplus
For Fe and inevitable impurity.
As the technical scheme of a kind of optimization, described emollient component by weight percentage, containing hydroxyl silicic acid
Magnesium 8%, surplus is lube base oil；
As the technical scheme of a kind of optimization, described lube base oil is biological base oil, described bio-based
Plinth oil can be bought from existing market, and this is the conventional substances in this area, is no longer described in detail at this.
Described preparation method comprises the steps:
S1: blade substrate manufactures
S1-1: energising melting batch, described furnace charge includes the first material containing Fe, C, P, S, when molten steel melts
After pond is formed, pusher is fluxed, and adds slag charge slag making；When furnace charge is more than half, oxygen blast is fluxed, and adds and contains
Expecting at the beginning of Mo, after furnace charge is melting down, being sufficiently stirred for molten steel, the holding quantity of slag is 3-5wt%；
S1-2: when molten steel temperature reaches 1565-1570 DEG C, adds and expects containing at the beginning of Si, oxygen decarburization, oxygen blast pressure
Power is 0.6-0.7Mpa, and oxygen consumption is 6.5-7.5m3/ ton molten steel, is sufficiently stirred for 5-6 hour；
S1-3: stop oxygen blast, adds pre-deoxidant, is subsequently added and expects containing at the beginning of Cr, adds mixing reducing agent
Reduction, treats that material is melting down, is sufficiently stirred for molten steel 1-3 hour, sequentially adds the first material containing Mn, Cu, Ni,
And be eventually adding in the case of stirring nanometer powder rank containing B element material, continue stirring 2-5 hour,
And it is cast into blade just part；
S1-4: blade is just carried out Nitrizing Treatment in part surface, obtains blade substrate；
S2: wear-resisting cutting edge manufacture
According to the normal smelting technology of cast steel, according to formula proportion will contain C, Si, Mn, P, S, Cr, Mo,
The first material fusing of Cu, B, after coming out of the stove, sequentially utilizes LF refining furnace, RH stove refine, is cast into cutting edge base
Part, then obtain described wear-resisting cutting edge through grinding；
S3: welded by electron beam, is welded on the edge of described blade substrate by described wear-resisting cutting edge, thus
Obtain described blade.
In being used for the preparation method of blade of impeller described in the present invention, described step S1-S2 uses
Various just material are all the conventional materials in this field of steel-making, as long as respective usage amount makes gained blade substrate
With the content of each element in cutting edge in the range of above-mentioned restriction, those skilled in the art may select
Suitably each just expects that consumption, to meet this requirement, is no longer described in detail at this.
Described in the present invention in the preparation method of the blade of impeller, described in described step S1-3 contains
B element material be Nano grade containing B element powder, can be such as between 100-200 nanometer containing B unit
Cellulosic material, the conventional material Han B element in optional field of steel-making, and by its attrition grinding to 100-200
Nanometer.
Described in the present invention in the preparation method of the blade of impeller, described pre-in described step S1-3
Deoxidizer is the mixture of aluminium block and silicoglaserite, and wherein, aluminium block consumption is 0.5kg/ ton molten steel, silicoglaserite use
Amount is 2kg/ ton molten steel.
Described in the present invention in the preparation method of the blade of impeller, described mixed in described step S1-3
Closing reducing agent consumption is 3-5kg/ ton molten steel, and it is ferrosilicon powder and the mixture of silicon calcium powder of mass ratio 1:2.
In being used for the preparation method of blade of impeller described in the present invention, as the technical scheme of a kind of optimization,
The Nitrizing Treatment of step S1 (specially step S1-4) is specific as follows:
A1: blade just part is incubated 15 hours at 500-520 DEG C, uses the ammonia dissociation rate of 15-18%, from
And complete the first stage；
A2: ammonia dissociation rate is brought up to 30%, and temperature retention time 30-40 hour at 500-520 DEG C, completes
Second stage；
A3: after diffusion phase completes, liter high-temperature is to 580-600 DEG C, and carries out the phase III at such a temperature
8-10 hour, and ammonia dissociation rate is brought up to 75-85%, most preferably 80%, thus complete Nitrizing Treatment.
Described in the present invention for impeller blade preparation method in, step S2 and/S3 in LF refine,
RH refining procedure, electron beam welding etc. are all the routine techniques knowledge in this area, and those skilled in the art are equal
Operation that can be the most concrete, does not repeats at this.
As it has been described above, the invention provides the preparation method of a kind of blade for impeller, described blade passes through
Specific combination of materials selects and the manufacture method of uniqueness, so that final impeller achieves many excellent
Different technique effect, such as:
1, inventor finds in long-term practice, arranges in the friction pair between the axle and cylinder sleeve of sickle pump
Having specific emollient component, containing hydroxyl magnesium silicate 5-10wt% in emollient component, surplus is biological base oil
Time, when sickle pump runs up, hydroxyl magnesium silicate and the raw cartalytic decomposition effect of biological basis oily hair, produce
Substantial amounts of active atoms of carbon and oxygen atom, owing to diameter is less, the atom of two kinds of elements occurs along friction surface
Deep layer spread, and with metallic atom generation chemical action.Hydroxyl magnesium silicate is owing to having release active oxygen atom
Ability, thus metal surface is had polishing action, thus improves the tribological property of metal surface, and
The magnesium elements wherein contained can promote oxidation, and element silicon then can promote rupturing of oxide layer, this two process
Reciprocal action promote oxygen atom to spread to matallic surface layer higher depth, form thickness and reach the high rigidity of 10 μm
Compact oxidation layer, thereby may be ensured that axle and barrel wear selfreparing, it is ensured that the stationarity of wheel rotation,
Ensure that the uniform of vane stress, it is to avoid cause concentrated wear serious.
2, in the present invention, the composition of blade and wear-resisting cutting edge draws through a large amount of experiments repeatedly, therein group
Split-phase is worked in coordination with mutually, it is possible to play raising blade wearability, the effect of fatigue strength.Such as, Mn therein
Element can be greatly improved fatigue behaviour, containing Mn so that blade homogeneous deformation in material, the most permissible
Crackle is formed at whole intra-die, rather than concentrates at boundary, on the other hand, also split containing Mn
The resistance of stricture of vagina extension, when crack tip extends to containing Mn phase time, and crackle can deflect, increases crack extesion
Approach, thus improve fracture toughness and the fatigue resistance of material.Mo element therein can improve quenching degree, thin
Change tissue, improve toughness.B element can replace the C in carbide, forms hard borides, also can make altogether
Brilliant point moves to left, and forms the carbide of eutectic；And also refine hard phase, improve the effects such as surfacing hardness.
By above collaborative, substantially increase wearability and the fatigue resistance of impeller face.
3, in the present invention, in the manufacture method of blade, unique Nitrizing Treatment method is used so that final
Impeller there is the most excellent wearability, there is longer service life.
In sum, the specific components of the present invention selects and preparation method, can improve blade on the whole
Wearability, solves the problem that blade easily weares and teares, industrially has a good application prospect and industrialization
Productive potentialities.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described.But the purposes of these exemplary embodiments and purpose
Only it is used for enumerating the present invention, not the real protection scope of the present invention is constituted any type of any restriction,
More non-protection scope of the present invention is confined to this.
Wherein, unless otherwise defined, in following all embodiments, ooze described in step S1-4
Nitrogen processes the most specific as follows:
A1: blade just part is incubated 15 hours at 510 DEG C, uses the ammonia dissociation rate of 16%, thus complete
First stage；
A2: ammonia dissociation rate is brought up to 30%, and temperature retention time 35 hours at 510 DEG C, completes second-order
Section；
A3: after diffusion phase completes, liter high-temperature is to 590 DEG C, and carries out at such a temperature at the phase III
Manage 9 hours, and ammonia dissociation rate is brought up to 80%, thus complete Nitrizing Treatment.
Embodiment 1
The preparation method of a kind of blade for impeller, described impeller includes blade, axle and cylinder sleeve, described axle
Coordinate and be installed in described cylinder sleeve, and in the friction pair between described axle and described cylinder sleeve, be provided with specific profit
Sliding component, by weight percentage, containing hydroxyl magnesium silicate 5%, surplus is biological basis to described emollient component
Oil；
Described blade uses following certain material to be fabricated by, and described certain material is with percentage by weight as list
Position, containing C 3.3, Si 2.3, Mn 1.1, P 0.17, S 0.1, Cr 0.45, Mo 0.61, Cu 0.56, B
0.062, Ni 1.1, surplus is Fe and inevitable impurity；
It addition, the edge of described blade utilizes electron beam to be welded with wear-resisting cutting edge, described wear-resisting cutting edge is with weight
Percentage ratio is unit, containing C 2.8, Si 2.0, Mn 0.8, P ＜ 0.13, S ＜ 0.09, Cr 0.45, Mo 0.61,
Cu 0.56, B 0.08, surplus is Fe and inevitable impurity.
Described preparation method comprises the steps:
S1: blade substrate manufactures
S1-1: energising melting batch, described furnace charge includes the first material containing Fe, C, P, S, when molten steel melts
After pond is formed, pusher is fluxed, and adds slag charge slag making；When furnace charge is more than half, oxygen blast is fluxed, and adds and contains
Expecting at the beginning of Mo, after furnace charge is melting down, being sufficiently stirred for molten steel, the holding quantity of slag is 3-5wt%；
S1-2: when molten steel temperature reaches 1565-1570 DEG C, adds and expects containing at the beginning of Si, oxygen decarburization, oxygen blast pressure
Power is 0.6Mpa, and oxygen consumption is 6.5m3/ ton molten steel, is sufficiently stirred for 6 hours；
S1-3: stop oxygen blast, (for aluminium block and the mixture of silicoglaserite, wherein, aluminium block is used to add pre-deoxidant
Amount is 2kg/ ton molten steel for 0.5kg/ ton molten steel, silicoglaserite consumption), it is subsequently added and expects containing at the beginning of Cr, add
(described mixing reducing agent consumption is 3kg/ ton molten steel, and it is the ferrosilicon powder of mass ratio 1:2 in mixing reducing agent reduction
Mixture with silicon calcium powder), treat that material is melting down, be sufficiently stirred for molten steel 1 hour, sequentially add containing Mn, Cu,
The first material of Ni, and stirring in the case of be eventually adding nanometer powder rank containing B element material, continue to stir
Mix 2 hours, and be cast into blade just part；
S1-4: blade is just carried out Nitrizing Treatment in part surface, obtains blade substrate；
S2: wear-resisting cutting edge manufacture
According to the normal smelting technology of cast steel, according to formula proportion will contain C, Si, Mn, P, S, Cr, Mo,
The first material fusing of Cu, B, after coming out of the stove, sequentially utilizes LF refining furnace, RH stove refine, is cast into cutting edge base
Part, then obtain described wear-resisting cutting edge through grinding；
S3: welded by electron beam, is welded on the edge of described blade substrate by described wear-resisting cutting edge, thus
Obtain described blade, the named Y1 of impeller that this blade will be assembled with.
Embodiment 2
The preparation method of a kind of blade for impeller, described impeller includes blade, axle and cylinder sleeve, described axle
Coordinate and be installed in described cylinder sleeve, and in the friction pair between described axle and described cylinder sleeve, be provided with specific profit
Sliding component, by weight percentage, containing hydroxyl magnesium silicate 8%, surplus is biological basis to described emollient component
Oil；
Described blade uses following certain material to be fabricated by, and described certain material is with percentage by weight as list
Position, containing C 3.5, Si 2.1, Mn 1.3, P 0.15, S 0.2, Cr 0.41, Mo 0.71, Cu 0.51, B
0.072, Ni 0.9, surplus is Fe and inevitable impurity；
It addition, the edge of described blade utilizes electron beam to be welded with wear-resisting cutting edge, described wear-resisting cutting edge is with weight
Percentage ratio is unit, containing C 3.2, Si 1.6, Mn 1.0, P ＜ 0.13, S ＜ 0.09, Cr 0.41, Mo 0.71,
Cu 0.51, B 0.09, surplus is Fe and inevitable impurity；
Described preparation method comprises the steps:
S1: blade substrate manufactures
S1-1: energising melting batch, described furnace charge includes the first material containing Fe, C, P, S, when molten steel melts
After pond is formed, pusher is fluxed, and adds slag charge slag making；When furnace charge is more than half, oxygen blast is fluxed, and adds and contains
Expecting at the beginning of Mo, after furnace charge is melting down, being sufficiently stirred for molten steel, the holding quantity of slag is 3-5wt%；
S1-2: when molten steel temperature reaches 1565-1570 DEG C, adds and expects containing at the beginning of Si, oxygen decarburization, oxygen blast pressure
Power is 0.7Mpa, and oxygen consumption is 7.5m3/ ton molten steel, is sufficiently stirred for 5 hours；
S1-3: stop oxygen blast, (for aluminium block and the mixture of silicoglaserite, wherein, aluminium block is used to add pre-deoxidant
Amount is 2kg/ ton molten steel for 0.5kg/ ton molten steel, silicoglaserite consumption), it is subsequently added and expects containing at the beginning of Cr, add
(described mixing reducing agent consumption is 5kg/ ton molten steel, and it is the ferrosilicon powder of mass ratio 1:2 in mixing reducing agent reduction
Mixture with silicon calcium powder), treat that material is melting down, be sufficiently stirred for molten steel 3 hours, sequentially add containing Mn, Cu,
The first material of Ni, and stirring in the case of be eventually adding nanometer powder rank containing B element material, continue to stir
Mix 5 hours, and be cast into blade just part；
S1-4: blade is just carried out Nitrizing Treatment in part surface, obtains blade substrate；
S2: wear-resisting cutting edge manufacture
According to the normal smelting technology of cast steel, according to formula proportion will contain C, Si, Mn, P, S, Cr, Mo,
The first material fusing of Cu, B, after coming out of the stove, sequentially utilizes LF refining furnace, RH stove refine, is cast into cutting edge base
Part, then obtain described wear-resisting cutting edge through grinding；
S3: welded by electron beam, is welded on the edge of described blade substrate by described wear-resisting cutting edge, thus
Obtain described blade, the named Y2 of impeller that this blade will be assembled with.
Embodiment 3
The preparation method of a kind of blade for impeller, described impeller includes blade, axle and cylinder sleeve, described axle
Coordinate and be installed in described cylinder sleeve, and in the friction pair between described axle and described cylinder sleeve, be provided with specific profit
Sliding component, by weight percentage, containing hydroxyl magnesium silicate 8%, surplus is biological basis to described emollient component
Oil；
Described blade uses following certain material to be fabricated by, and described certain material is with percentage by weight as list
Position, containing C 3.4, Si 2.2, Mn 1.2, P 0.16, S 0.15, Cr 0.42, Mo 0.65, Cu 0.53,
B 0.065, Ni 1.0, surplus is Fe and inevitable impurity；
It addition, the edge of described blade utilizes electron beam to be welded with wear-resisting cutting edge, described wear-resisting cutting edge is with weight
Percentage ratio is unit, containing C 3.0, Si 1.7, Mn 0.9, P ＜ 0.13, S ＜ 0.09, Cr 0.43, Mo 0.66,
Cu 0.54, B 0.09, surplus is Fe and inevitable impurity；
Described preparation method comprises the steps:
S1: blade substrate manufactures
S1-1: energising melting batch, described furnace charge includes the first material containing Fe, C, P, S, when molten steel melts
After pond is formed, pusher is fluxed, and adds slag charge slag making；When furnace charge is more than half, oxygen blast is fluxed, and adds and contains
Expecting at the beginning of Mo, after furnace charge is melting down, being sufficiently stirred for molten steel, the holding quantity of slag is 3-5wt%；
S1-2: when molten steel temperature reaches 1565-1570 DEG C, adds and expects containing at the beginning of Si, oxygen decarburization, oxygen blast pressure
Power is 0.65Mpa, and oxygen consumption is 7m3/ ton molten steel, is sufficiently stirred for 5.5 hours；
S1-3: stop oxygen blast, (for aluminium block and the mixture of silicoglaserite, wherein, aluminium block is used to add pre-deoxidant
Amount is 2kg/ ton molten steel for 0.5kg/ ton molten steel, silicoglaserite consumption), it is subsequently added and expects containing at the beginning of Cr, add
(described mixing reducing agent consumption is 4kg/ ton molten steel, and it is the ferrosilicon powder of mass ratio 1:2 in mixing reducing agent reduction
Mixture with silicon calcium powder), treat that material is melting down, be sufficiently stirred for molten steel 2 hours, sequentially add containing Mn, Cu,
The first material of Ni, and stirring in the case of be eventually adding nanometer powder rank containing B element material, continue to stir
Mix 3.5 hours, and be cast into blade just part；
S1-4: blade is just carried out Nitrizing Treatment in part surface, obtains blade substrate；
S2: wear-resisting cutting edge manufacture
According to the normal smelting technology of cast steel, according to formula proportion will contain C, Si, Mn, P, S, Cr, Mo,
The first material fusing of Cu, B, after coming out of the stove, sequentially utilizes LF refining furnace, RH stove refine, is cast into cutting edge base
Part, then obtain described wear-resisting cutting edge through grinding；
S3: welded by electron beam, is welded on the edge of described blade substrate by described wear-resisting cutting edge, thus
Obtain described blade, the named Y3 of impeller that this blade will be assembled with.
Comparative example 1-6
Comparative example 1-3: in addition to B element is added in step S1-1, other operation is the most constant, thus point
Do not repeat to implement embodiment 1-3, sequentially obtain comparative example 1-3, impeller the most named D1, the D2 that will obtain
And D3.
Comparative example 4-6: in addition to B element is added in step S1-2, other operation is the most constant, thus point
Do not repeat to implement embodiment 1-3, sequentially obtain comparative example 4-6, impeller the most named D4, the D5 that will obtain
And D6.
Comparative example 7-9
In addition to being omitted by the Mn element in step S1-3, other operation the most constant (in i.e. final blade not
Containing Mn element), thus repeat respectively to implement embodiment 1-3, sequentially obtain comparative example 7-9, by obtain
Impeller the most named D7, D8 and D9.
Comparative example 10-12
Except by step S2 containing at the beginning of Cu material omitted in addition to, the most constant (the most final wear-resisting cutting edge of other operation
In do not contain Cu element), thus respectively repeat implement embodiment 1-3, sequentially obtain comparative example 10-12, will
Impeller the most named D10, D11 and the D12 obtained.
Comparative example 13-15
(510 DEG C are i.e. always remained as) in addition to the temperature in step A3 of step S1-4 is not warming up to 590 DEG C,
Other operation is the most constant, thus repeats to implement embodiment 1-3, sequentially obtains comparative example 13-15, by obtain
Plunger pair the most named D13, D14 and D15.
Performance test
The impeller that above-described embodiment 1-3 and comparative example 7-15 obtain is assembled in sickle pump, normal operation 1000
After hour, investigating the blade surface in impeller and the abrasion condition of edge surface, concrete outcome see table 1.
Table 1
Wherein, under the conditions of visually: " √ √ √ " represents that abrasion is not observed on surface, and " √ √ " indicates light
Wiping, " √ " indicates that noticeable wear, "×" indicate heavy wear.
As can be seen here: 1, when using the preparation method of the present invention, the leaf with excellent abrasive resistance can be obtained
Sheet (see Y1-Y3)；2, when the temperature in Carburization Treatment step A3 is not increased to 590 DEG C, blade is found
Wearability decreases (see D13-D15), and this proves that the treatment temperature of this step is most important；3 and when
When step S1-1 or S1-2 add B element, the wearability of blade is all caused to significantly reduce (see D1-D6),
Especially fashionable when adding in step S1-2, wear and tear the most serious；4, when blade contains Mn element, and
Time in cutting edge containing Cu, effect the most excellent can be obtained, when lacking, the most all cause wearability to have significantly
Reduce (see D7-D12).
Comparative example 16-21
In addition to the ammonia dissociation rate in step A3 changed in step S1-4, other operation is the most constant, thus weight
Implement embodiment 1-3 again, obtain comparative example 16-21.Ammonia dissociation rate, embodiment corresponding relation and gained plunger
Secondary name is as shown in table 2 below.
Table 2
The impeller that above-mentioned comparative example 16-21 obtains is assembled in impeller, after normal operation 1000 hours, examines
Examining the abrasion condition of the blade surface investigated in impeller, concrete outcome see table 3.For the sake of comparing for convenience,
The result of Y1-Y3 is listed in the lump.
Table 3
Wherein, the implication of " √ √ √ " and " √ √ " is ibid.
As can be seen here, the ammonia dissociation rate in step A3 of Nitrizing Treatment is extremely important, energy when for 79-81%
Enough obtain best anti-wear performance, and when for 75-78% or 82-85%, all wearability will be caused to have had bright
Aobvious reduction.
In sum, the present invention, by specific compositional selecting and preparation method, can obtain having excellence resistance to
The sickle pump blade of mill property, solves the problem that blade easily weares and teares, before industrially having good application
Scape and industrial production potential.
Should be appreciated that the purposes of these embodiments is merely to illustrate the present invention and is not intended to limit the guarantor of the present invention
Protect scope.Additionally, it will also be appreciated that after the technology contents having read the present invention, those skilled in the art
The present invention can make various change, amendment and/or modification, and all these equivalent form of value falls within this Shen equally
Please be within the protection domain that limited of appended claims.
Claims (9)
1. being used for a preparation method for the blade of impeller, described impeller includes blade, axle and cylinder sleeve, described
Axle cooperation is installed in described cylinder sleeve, and is provided with specific in the friction pair between described axle and described cylinder sleeve
Emollient component, by weight percentage, containing hydroxyl magnesium silicate 5-10%, surplus is lubrication to described emollient component
Oil base oil；
Described blade uses following certain material to be fabricated by, and described certain material is with percentage by weight as list
Position, containing C 3.3-3.5, Si 2.1-2.3, Mn 1.1-1.3, P 0.15-0.17, S 0.1-0.2, Cr 0.41-0.45,
Mo 0.61-0.71, Cu 0.51-0.56, B 0.062-0.072, Ni 0.9-1.1, surplus is Fe and can not keep away
The impurity exempted from；
It addition, the edge of described blade utilizes electron beam to be welded with wear-resisting cutting edge, described wear-resisting cutting edge is with weight
Percentage ratio is unit, containing C 2.8-3.2, Si 1.6-2.0, Mn 0.8-1.0, P ＜ 0.13, S ＜ 0.09, Cr
0.41-0.45, Mo 0.61-0.71, Cu 0.51-0.56, B 0.08-0.09, surplus is Fe and inevitably
Impurity.
Described preparation method comprises the steps:
S1: blade substrate manufactures
S1-1: energising melting batch, described furnace charge includes the first material containing Fe, C, P, S, when molten steel melts
After pond is formed, pusher is fluxed, and adds slag charge slag making；When furnace charge is more than half, oxygen blast is fluxed, and adds and contains
Expecting at the beginning of Mo, after furnace charge is melting down, being sufficiently stirred for molten steel, the holding quantity of slag is 3-5wt%；
S1-2: when molten steel temperature reaches 1565-1570 DEG C, adds and expects containing at the beginning of Si, oxygen decarburization, oxygen blast pressure
Power is 0.6-0.7Mpa, and oxygen consumption is 6.5-7.5m3/ ton molten steel, is sufficiently stirred for 5-6 hour；
S1-3: stop oxygen blast, adds pre-deoxidant, is subsequently added and expects containing at the beginning of Cr, adds mixing reducing agent
Reduction, treats that material is melting down, is sufficiently stirred for molten steel 1-3 hour, sequentially adds the first material containing Mn, Cu, Ni,
And be eventually adding in the case of stirring nanometer powder rank containing B element material, continue stirring 2-5 hour,
And it is cast into blade just part；
S1-4: blade is just carried out Nitrizing Treatment in part surface, obtains blade substrate；
S2: wear-resisting cutting edge manufacture
According to the normal smelting technology of cast steel, according to formula proportion will contain C, Si, Mn, P, S, Cr, Mo,
The first material fusing of Cu, B, after coming out of the stove, sequentially utilizes LF refining furnace, RH stove refine, is cast into cutting edge base
Part, then obtain described wear-resisting cutting edge through grinding；
S3: welded by electron beam, is welded on the edge of described blade substrate by described wear-resisting cutting edge, thus
Obtain described blade.
2. preparation method as claimed in claim 1, it is characterised in that: described certain material is with weight percent
Than be unit, containing C 3.4, Si 2.2, Mn 1.2, P 0.16, S 0.15, Cr 0.42, Mo 0.65, Cu 0.53,
B 0.065, Ni 1.0, surplus is Fe and inevitable impurity.
3. preparation method as claimed in claim 1 or 2, it is characterised in that: described wear-resisting cutting edge is with weight
Percentage ratio is unit, containing C 3.0, Si 1.7, Mn 0.9, P ＜ 0.13, S ＜ 0.09, Cr 0.43, Mo 0.66,
Cu 0.54, B 0.09, surplus is Fe and inevitable impurity.
4. the preparation method as described in any one of claim 1-3, it is characterised in that: described lube base
Oil is biological base oil.
5. the preparation method as described in any one of claim 1-4, it is characterised in that: in described step S1-3
Described containing B element material be Nano grade containing B element powder, can be such as between 100-200 nanometer
Containing B element material.
6. the preparation method as described in any one of claim 1-5, it is characterised in that: in described step S1-3
The mixture that described pre-deoxidant is aluminium block and silicoglaserite, wherein, aluminium block consumption be 0.5kg/ ton molten steel,
Silicoglaserite consumption is 2kg/ ton molten steel.
7. the preparation method as described in any one of claim 1-6, it is characterised in that: in described step S1-3
Described mixing reducing agent consumption be 3-5kg/ ton molten steel, it is the mixed of the ferrosilicon powder of mass ratio 1:2 and silicon calcium powder
Compound.
8. the preparation method as described in any one of claim 1-7, it is characterised in that: the nitriding of step S1-4
Process specific as follows:
A1: blade just part is incubated 15 hours at 500-520 DEG C, uses the ammonia dissociation rate of 15-18%, from
And complete the first stage；
A2: ammonia dissociation rate is brought up to 30%, and temperature retention time 30-40 hour at 500-520 DEG C, completes
Second stage；
A3: after diffusion phase completes, liter high-temperature is to 580-600 DEG C, and carries out the phase III at such a temperature
8-10 hour, and ammonia dissociation rate is brought up to 75-85%, thus complete Nitrizing Treatment.
9. the preparation method as described in any one of claim 1-8, it is characterised in that: the ammonia in step A3
Resolution ratio is 80%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110551940A (en) * | 2019-08-23 | 2019-12-10 | 徐州东坤耐磨材料有限公司 | Impeller forming process |
| CN110578087A (en) * | 2019-08-23 | 2019-12-17 | 徐州东坤耐磨材料有限公司 | impeller for impeller pump |
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| CN110551940A (en) * | 2019-08-23 | 2019-12-10 | 徐州东坤耐磨材料有限公司 | Impeller forming process |
| CN110578087A (en) * | 2019-08-23 | 2019-12-17 | 徐州东坤耐磨材料有限公司 | impeller for impeller pump |
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Address after: 225300 north of Chuang Chuang Avenue, Gaogang science and Technology Park, Taizhou, Jiangsu Patentee after: Taizhou Yun Jie Logistics Safety Equipment Technology Co., Ltd. Address before: 225300 north of Chuang Chuang Avenue, Gaogang science and Technology Park, Taizhou, Jiangsu Patentee before: Taizhou Runjie Hardware Machinery Manufacturing Co. Ltd. |
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