CN106755922B - A kind of combined experiments system and method for water-jet and iron sand injection - Google Patents
A kind of combined experiments system and method for water-jet and iron sand injection Download PDFInfo
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- CN106755922B CN106755922B CN201710154465.6A CN201710154465A CN106755922B CN 106755922 B CN106755922 B CN 106755922B CN 201710154465 A CN201710154465 A CN 201710154465A CN 106755922 B CN106755922 B CN 106755922B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention relates to the combined experiments system and methods of a kind of water-jet and iron sand injection.Its technical solution is：Including high pressure liquid-supplying system, iron sand injection generation system, iron sand jet control system, iron sand recovery system and stent system, liquid water in water tank is pressurized after cleaning system is handled by high-pressure pump, and passes through pressure-regulating valve and high-voltage tube is delivered to iron sand injection generation system；The iron sand injection generation system includes iron sand tank, hydraulic motor, iron sand injector, mixing tank, throttle valve and iron sand outlet valve, iron sand forms high pressure iron sand two phase flow with high pressure water in mixing tank, into iron sand injector, the nozzle alignment pieces on the downside of iron sand injector are sprayed.Advantageous effect is：The present invention is using high-pressure water jet and the method for iron sand cooperation, wherein, high pressure water carries iron sand and workpiece surface is sprayed simultaneously, and the enormous impact compression carried generates enough plastic deformations in workpiece surface, and the fatigue strength of the stress of workpiece can be made to improve 90%.
Description
Technical field
The present invention relates to a kind of mechanical experiment system, the combined experiments system of more particularly to a kind of water-jet and iron sand injection
System and method.
Background technology
In machinery production, welding as it is a kind of it is common to heat, in a manner of high temperature or high pressure jointing metal or its
His thermoplastic material manufacturing process and technology, are widely used in mechanical processing.When weldment in the welding process, thermal stress, phase
Varying stress, machining stress etc. are more than yield limit, so that leaving the stress for failing to eliminate after cooling in weldment；In this way, welding is cold
But the macro-stress remained in weldment after is known as remaining welding stress, the uneven temperature field of welding process and is drawn by it
The local plastic deformation tissue different with specific volume risen is the basic reason for generating welding stress and distortion, and welding residual stress
It is the principal element for cracking and deforming again.Therefore reduced before equipment is put into operation welding residual stress be pole it is necessary to
, at present, the method for eliminating welding residual stress has：Heat treatment, hammering, vibratory drilling method and preloading method etc..
Wherein, 1, heat treatment null method：Post weld heat treatment is a kind of elimination common method of welding residual stress.Engineering
Upper we mainly use annealing, and fiery temperature is higher, soaking time is longer, and the effect for eliminating welding residual stress is better.But
It is that temperature is excessively high, making workpiece surface oxidation, tissue may change, and influence the performance of workpiece, there are disadvantages than more serious
End.Creep stress Relaxation Theory eliminates welding residual stress for heat treatment and provides another thinking, and workpiece is in lower temperature
Creep can occur, the residual stress meeting stress of material internal is loose and is released, as long as holding time long, theoretically
Residual stress is completely eliminated.In low temperature elimination welding residual stress, materials microstructure and performance change are little, hardly shadow
The performance of material is rung, and the oxidation and decarburization of low-temperature treatment material surface are also smaller, and this can be in the power of material
It learns performance and organizes to achieve the purpose that reduce material welding residual stress in the case of being basically unchanged.
2nd, null method is hammered：Postwelding makes weld seam Ji Jinfeng areas using the hand hammer hammering weld seam Ji Jinfeng areas with roundlet head
Metal obtain deformation of extending, welding residual stress drops in generated compressive plastic deformation during for compensating or offset welding
It is low.To master good force de frappe during hammering keeps uniform, appropriateness, avoids the processing hardening caused by force de frappe is excessive or will weld
Seam hammer is split.In addition, postwelding will hammer in time, in addition to prime coat should not use hammering, remaining is soldered each layer or will per one
It is hammered, graphite expansion temperature is avoided when hammering cast iron.
3rd, null method is vibrated：Vibration null method is using the vibrator being made of eccentric wheel and variable speed driver, ties welding
Pulsating stress caused by resonance occurs for structure to reduce internal stress.Such as the test specimen that section is the built-up welding of 30mm × 50mm one sides, warp
After crossing σ max=128N/mm2 and σ min=more Cyclic Stress of 5.6N/mm2, the situation of change of residual stress.Work as varying load
Reach certain numerical value, after multiple CYCLIC LOADING, the residual stress in welding structure continuously decreases.Setting used in this method
Standby simple, processing cost is low, and the time is shorter, without high tempering to problem of oxidation caused by metal surface, is constructing at present
In widely use.
4th, null method is preloaded：Mechanical stretching method can also be used in residual stress（The method of preloading）It eliminates or adjusts, such as to pressure
The water pressure test may be employed in force container, and 200 DEG C can also be locally heated in weld seam both sides, causes a temperature field, makes weld seam
Area is stretched, to reduce and eliminate welding residual stress.The elimination and adjustment of welding residual stress should take rational welding
Sequentially, advanced welding procedure, when welding, suitably reduce the rigidity of weldment, and in the suitable position local heating of weldment, make weldering
Seam can reduce residual stress in each link of welding than relatively freely shrinking, greatly improve material service life and
Performance has great importance in engineering construction.
Chinese patent literature Publication No. CN103805760A, patent name are《It is a kind of to eliminate weldering using high-pressure water jet
The method for connecing residual stress》, the invention using nozzle spray high pressure Water projectile move in welded joints, adjust Water projectile
Axle center dynamic pressure is 220 ~ 700MPa；And nozzle water outlet and 5 ~ 10mm of weld spacing are kept, Water projectile is perpendicular to workpiece surface
It is moved back and forth 4 ~ 8 times along welding track from weld seam, enhancement stress eradicating efficacy.The method that the invention uses is easy to operate, can be with
Quickly eliminate the stress of weld remnants after welding, but there are the problem of to be needed the time longer, and need early period
Multiple steps such as cleaning and vibration.
In addition there is a kind of blasting technology, bombard workpiece surface using pellet and be implanted into residual compressive stress, lifting workpieces fatigue
The cold machining process of intensity, bead are a kind of widely used surface intensified techniques of factory, and equipment is simple, at low cost
It is honest and clean, it is limited from workpiece shapes and position, it is easy to operate, but working environment is poor, and reinforcing effect is general, and noise is very
Greatly.
The content of the invention
The purpose of the present invention provides a kind of water-jet and is sprayed with iron sand aiming at drawbacks described above existing in the prior art
Combined experiments system and method, by high pressure water carry iron sand synchronously spray, realize that the stress of weld seam quickly eliminates, effect is more
It is good, the operating procedure of early period is decreased, while the service life of nozzle is improved, and reduce jet noise.
The combined experiments system of a kind of water-jet that the present invention mentions and iron sand injection, technical solution are：Including height
Press liquid-supplying system, iron sand injection generation system, iron sand jet control system, iron sand recovery system and stent system, the high pressure
Liquid-supplying system includes water tank（1）, cleaning system（2）, high-pressure pump（3）, pressure-regulating valve（4）And high-voltage tube（8）, water tank（1）In
Liquid water pass through cleaning system（2）By high-pressure pump after processing（3）Supercharging, and pass through pressure-regulating valve（4）And high-voltage tube（8）It is defeated
It send to iron sand and sprays generation system；
The iron sand injection generation system includes iron sand tank（5）, hydraulic motor（6）, iron sand injector（7）, mixing tank
（17）, throttle valve（19）With iron sand outlet valve（23）, high pressure water is by throttle valve（19）Into iron sand tank（5）, adjust pressure tune
Save valve（4）, when pressure reaches experiment setting value, open iron sand outlet valve（23）, iron sand is with high pressure water in mixing tank（17）It is interior
High pressure iron sand two phase flow is formed, into iron sand injector（7）；
The iron sand jet control system includes hydraulic controller（9）, switch board（10）, hydraulic oil pipe（24）, switch board
（10）Pass through hydraulic oil pipe（24）Connect hydraulic controller（9）, pass through hydraulic controller（9）Drive hydraulic motor（6）Action；
Iron sand recovery system uses magnetic recycling machine（11）, pass through magnetic recycling machine（11）It is connected to experimental box（16）, experimental box
Inside pass through clamper（14）Fixed workpiece（15）, iron sand injector（7）The nozzle of downside（13）Alignment pieces（15）It is sprayed；
Stent system includes upper backup pad（12）, supporting rod（18）And pedestal（20）.
Preferably, above-mentioned iron sand injector（7）Including top connection（7.1）, mandrel（7.2）, gland（7.3）, upper sealing ring
（7.4）, upper packing（7.5）, spring（7.6）, quick coupling（7.7）, sleeve body（7.8）, oil filler point（7.9）, baffle ring
（7.10）, lower seal（7.11）, the mandrel（7.2）Mounted on sleeve body（7.8）Inner cavity, and sleeve body（7.8）
Bottom pass through quick coupling（7.7）Connect nozzle（13）, mandrel（7.2）Top be equipped with top connection（7.1）, in mandrel
（7.2）With sleeve body（7.8）Between be equipped with gland（7.3）, upper sealing ring（7.4）, upper packing（7.5）, spring（7.6）, gear
Circle（7.10）, lower seal（7.11）, gland（7.3）Lower part be equipped with upper sealing ring（7.4）, upper sealing ring（7.4）Downside
Equipped with upper packing（7.5）, upper packing（7.5）Downside is equipped with spring（7.6）, spring（7.6）The outer wall at place is equipped with oil filler point
（7.9）, oil filler point（7.9）Outside is fixed equipped with nut.
Preferably, above-mentioned nozzle（13）Shape for pyramidal structure, inner cavity is equipped with four segment structures, is successively from top to bottom：
First cylindrical cavity（13.1）, the second cone-shaped cavity（13.2）, the 3rd cylindrical cavity（13.3）, the 4th cone-shaped cavity（13.4）,
Wherein, the first cylindrical cavity（13.1）Internal diameter be more than the 3rd cylindrical cavity（13.3）Internal diameter, the second cone-shaped cavity（13.2）
Internal diameter be more than the 4th cone-shaped cavity（13.4）Internal diameter.
Preferably, above-mentioned nozzle（13）Using nozzle made of high hardness wear-resisting material, the system of high hardness wear-resisting material
It is as follows to make formula：80-100 parts of alumina powder, 3-8 parts of yttrium powder of oxidation, 1-2 parts of calcium bicarbonate, 1-3 parts of talcum powder, zirconium oxide 1-3
Part, 0.01-0.03 parts of oleic acid, 0.04-0.05 parts of paraffin.
Preferably, above-mentioned clamper（14）Downside be clamper seat（26）, clamper seat（26）With clamper（14）It is logical
Cross four leading screws（27）Connection, realizes the fine tuning of lifting；The clamper seat（26）One side be equipped with connecting rod（26.2）, connection
Bar（26.2）Outer end be equipped with operating handle（26.3）, realize the fine tuning in left and right horizontal direction, the clamper seat（26）Two
Side is shoveled equipped with oblique angle（26.1）.
Preferably, above-mentioned clamper（14）It is equipped with two extruding items（14.2）, the extruding item（14.2）One end with
Clamper（14）Flexible connection, the other end pass through buckle（14.4）It is fixed, and the extruding item（14.2）By workpiece（15）Two
Side is fixed on clamper（14）Upper surface.
Preferably, above-mentioned experimental box（16）Inner wall be equipped with noise reduction layer, noise reduction layer using temperature resistant glass fiber cloth, rubber
Layer is formed with stainless steel steel mesh, and during making, stainless steel steel mesh is put into metal degreasing agent degreasing 60-90 minutes, and is further existed
Rapid draing 20 minutes in the environment that temperature is 80 degree, then, temperature resistant glass fiber cloth, rubber layer and stainless steel steel mesh are stitched
System together, forms noise reduction layer.
Preferably, above-mentioned experimental box（16）Pass through pipeline and circulating pump（25）It is connected to water tank（1）, realize that the cycling of water is sharp
With；The pressure-regulating valve（4）One side pass through return duct（21）Joining water box（1）；The throttle valve（19）Upside pass through
Flow divider（22）It is connected to iron sand tank（5）.
The experimental method that a kind of mechanical welding stress that the present invention mentions eliminates, it is characterized in that comprising the following steps：
One）The workpiece that will be welded（15）It is fixed on clamper（14）On, clamper（14）Mounted on experimental box（16）It is interior
Bottom of chamber portion；
Two）Open switch board（10）, operate hydraulic controller（9）, make iron sand injector（7）Close to pending workpiece
（15）Top；
Three）Start high-pressure pump（3）, to passing through water cleaning systems（2）Treated, and water is pressurized；
Four）High pressure water is through high pressure line（8）, into throttle valve（19）With iron sand tank（5）, utilize fluidization and static balance
Principle first makes iron sand tank（5）In abrasive material fluidization, then adjust iron sand tank（5）The throttle valve of lower section（19）, change iron
Silo（5）Upper and lower pressure difference, so as to control the iron sand dosage being added in pipeline；
Five）Then adjust pressure-regulating valve（4）, when pressure reaches experiment setting value, open iron sand outlet valve（23）, iron
Sand is with high pressure water in mixing tank（17）Interior formation high pressure iron sand two phase flow, into iron sand injector（7）, through fluid jet nozzle（13）Add
High speed iron sand jet stream is formed after speed；Open simultaneously circulating pump（25）, by experimental box（16）Water squeeze into water tank（1）, realize water
It recycles；
Six）Operate hydraulic controller（9）, make iron sand injector（7）It is moved to pending workpiece（15）Place, and according to experiment
The requirement injection workpiece of setting（15）On weld seam；
Seven）To the end of experiment, high-pressure pump is closed（3）, closing control（10）, take out the workpiece handled；
Eight）Open magnetic recycling machine（11）, magnetic iron sand is recycled.
The beneficial effects of the invention are as follows：The method that the present invention is coordinated using high-pressure water jet with iron sand, wherein, high pressure water is taken
Band iron sand simultaneously sprays face of weld, and the enormous impact compression carried generates enough plasticity on weld seam surface layer and becomes
Shape makes residual stress preferably be relaxed；Impact phase is carried out with existing independent use water jet or exclusive use abrasive material
Than the two mixes synchronous use, can play the effect for preferably eliminating stress, and carrying iron sand by high pressure water carries out
Injection can make the fatigue strength of the commissure of workpiece improve 90%, the internal stress of commissure be eliminated comprehensively, with traditional welding stress
Removing method compare, have effect it is good, it is at low cost, pollution-free, easy to operate, easily dead angle position is handled；
In addition, by using the nozzle of high-strength abrasion-proof, the service life of nozzle can be increased substantially, mitigates the mill of nozzle
Damage amount, furthermore, it is contracted using the two-stage of the first cylindrical cavity, the second cone-shaped cavity, the 3rd cylindrical cavity, the 4th cone-shaped cavity composition
Small inner cavity forms first order pressurized construction by the first cylindrical cavity, the second cone-shaped cavity, realizes iron sand and high pressure water once
Boost in pressure；The second level pressurized construction being made up of again the 3rd cylindrical cavity, the 4th cone-shaped cavity, can further improve spray
Injection pressure avoids once reaching compression shock powerful caused by eject request, and using the material of high hardness wear-resisting, it can
It to increase substantially the service life of nozzle, and also easily makes, is used convenient for large-scale promotion；
Furthermore clamper of the invention can realize the fine tuning of vertical direction, folder by the cooperation of leading screw and clamper seat
Holder seat realizes the displacement of the horizontal direction of clamper seat by connecting rod and operating handle, in this manner it is possible to be realized to weld seam
Preferably injection in addition, the outside of clamper seat is shoveled equipped with oblique angle, can strike off the iron sand layer of deposition, not only make folder
The movement of holder seat is more prone to, furthermore, it is possible to which iron sand deposits for a long time simultaneously, the problem of causing to be difficult to recycle, and then improves
Entire experiment effect；
In addition, the inner wall of experimental box is equipped with noise reduction layer, the noise of injection is reduced further.
Description of the drawings
Attached drawing 1 is the structure diagram of the present invention；
Attached drawing 2 is the structure diagram of iron sand injector；
Attached drawing 3 is the structure diagram of nozzle；
Attached drawing 4 is the top view of clamper and workpiece；
Attached drawing 5 is clamper and the side view of clamper seat and workpiece；
In upper figure：Water tank 1, cleaning system 2, high-pressure pump 3, pressure-regulating valve 4, iron sand tank 5, hydraulic motor 6, iron sand injection
Device 7, high-voltage tube 8, hydraulic controller 9, switch board 10, magnetic recycling machine 11, upper backup pad 12, nozzle 13, clamper 14, workpiece
15th, experimental box 16, mixing tank 17, supporting rod 18, throttle valve 19, pedestal 20, return duct 21, flow divider 22, iron sand outlet valve 23,
Hydraulic oil pipe 24, circulating pump（25）, clamper seat（26）, leading screw（27）, support base 28, movable top lid 29；
Top connection（7.1）, mandrel（7.2）, gland（7.3）, Packing spring（7.4）, thrust bearing（7.5）, block
（7.6）, radial bearing（7.7）, sleeve body（7.8）, oil filler point（7.9）, baffle ring（7.10）, sealing ring（7.11）, fast quick access
Head（7.12）；First cylindrical cavity（13.1）, the second cone-shaped cavity（13.2）, the 3rd cylindrical cavity（13.3）, the 4th conical cavity
Body（13.4）；Clamp body（14.1）, squeeze item（14.2）, axis pin 14.3, buckle（14.4）, oblique angle shovel（26.1）, connection
Bar（26.2）, operating handle（26.3）.
Specific embodiment
The preferred embodiment of the present invention is illustrated below in conjunction with attached drawing, it should be understood that preferred reality described herein
It applies example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
The combined experiments system of a kind of water-jet that the present invention mentions and iron sand injection, technical solution are：Including height
Press liquid-supplying system, iron sand injection generation system, iron sand jet control system, iron sand recovery system and stent system, the high pressure
Liquid-supplying system includes water tank（1）, cleaning system（2）, high-pressure pump（3）, pressure-regulating valve（4）And high-voltage tube（8）, water tank（1）In
Liquid water pass through cleaning system（2）By high-pressure pump after processing（3）Supercharging, and pass through pressure-regulating valve（4）And high-voltage tube（8）It is defeated
It send to iron sand and sprays generation system；
The iron sand injection generation system includes iron sand tank（5）, hydraulic motor（6）, iron sand injector（7）, mixing tank
（17）, throttle valve（19）With iron sand outlet valve（23）, high pressure water is by throttle valve（19）Into iron sand tank（5）, adjust pressure tune
Save valve（4）, when pressure reaches experiment setting value, open iron sand outlet valve（23）, iron sand is with high pressure water in mixing tank（17）It is interior
High pressure iron sand two phase flow is formed, into iron sand injector（7）；
The iron sand jet control system includes hydraulic controller（9）, switch board（10）, hydraulic oil pipe（24）, switch board
（10）Pass through hydraulic oil pipe（24）Connect hydraulic controller（9）, pass through hydraulic controller（9）Drive hydraulic motor（6）Along branch
The track that 28 outside of support seat is equipped with moves up and down, and makes iron sand injector（7）Experimental box can be moved into（16）Or remove experimental box
（16）, hydraulic motor herein（6）Outer wall be equipped with the track groove of the track cooperation being equipped with the outside of support base 28；Hydraulic control
Device（9）With hydraulic motor（6）Between hydraulic oil pipe（24）Using the pipeline of flexible expandable, hydraulic motor can be followed（6）
It moves up and down, and then drives moving up and down for iron sand injector.
Iron sand recovery system uses magnetic recycling machine（11）, pass through magnetic recycling machine（11）It is connected to experimental box（16）, experimental box
Inside pass through clamper（14）Fixed workpiece（15）, iron sand injector（7）The nozzle of downside（13）Alignment pieces（15）It is sprayed；
Stent system includes upper backup pad（12）, supporting rod（18）And pedestal（20）, magnetic recycling machine（11）It is using commercially available magnetic separator
It can complete；It should be noted that experimental box（16）Inner wall be equipped with noise reduction layer.
Wherein, experimental box（16）Pass through pipeline and circulating pump（25）It is connected to water tank（1）, realize recycling for water, press
Force regulating valve（4）One side pass through return duct（21）Joining water box（1）；Throttle valve（19）Upside pass through flow divider（22）Connection
To iron sand tank（5）.
Referring to the drawings 2, the iron sand injector mentioned of the present invention（7）Including top connection（7.1）, mandrel（7.2）, gland
（7.3）, upper sealing ring（7.4）, upper packing（7.5）, spring（7.6）, quick coupling（7.7）, sleeve body（7.8）, oil filler point
（7.9）, baffle ring（7.10）, lower seal（7.11）, the mandrel（7.2）Mounted on sleeve body（7.8）Inner cavity, and sleeve
Main body（7.8）Bottom pass through quick coupling（7.7）Connect nozzle（13）, mandrel（7.2）Top be equipped with top connection（7.1）,
In mandrel（7.2）With sleeve body（7.8）Between be equipped with gland（7.3）, upper sealing ring（7.4）, upper packing（7.5）, spring
（7.6）, baffle ring（7.10）, lower seal（7.11）, gland（7.3）Lower part be equipped with upper sealing ring（7.4）, upper sealing ring
（7.4）Downside be equipped with upper packing（7.5）, upper packing（7.5）Downside is equipped with spring（7.6）, spring（7.6）It is set on the outer wall at place
There is oil filler point（7.9）, oil filler point（7.9）Outside is fixed equipped with nut.In use, mandrel（7.2）It can realize up and down
It is mobile, when needing to rotate, sleeve body（7.8）It can be rotated around mandrel, lubricating oil be injected by oil filler point, in the work of spring
Under, upper sealing ring is flowed into upwardly through upper packing, keeps sealing；Pass downwardly through baffle ring（7.10）Into lower seal
（7.11）, sealing is formed, in this way, high pressure water and iron sand can pass through mandrel（7.2）It is pressurized into nozzle 13 without flowing
Go out, moreover, injecting lubricating oil by oil filler point, can be operated without stopping experimental facilities, avoid the need for hesitation
Suspension problem is tested caused by lubrication.
Referring to the drawings 3, the nozzle mentioned of the present invention（13）Shape for pyramidal structure, inner cavity is equipped with four segment structures, by upper
It is successively under：First cylindrical cavity（13.1）, the second cone-shaped cavity（13.2）, the 3rd cylindrical cavity（13.3）, the 4th taper
Cavity（13.4）, wherein, the first cylindrical cavity（13.1）Internal diameter be more than the 3rd cylindrical cavity（13.3）Internal diameter, the second taper
Cavity（13.2）Internal diameter be more than the 4th cone-shaped cavity（13.4）Internal diameter；The present invention is by the first cylindrical cavity, the second conical cavity
Body forms first order pressurized construction, realizes a boost in pressure of iron sand and high pressure water；Pass through the 3rd cylindrical cavity, the 4th cone again
The second level pressurized construction of shape cavity composition, can further improve injection pressure, produced by avoiding once reaching eject request
Powerful compression shock, and nozzle（13）Inner cavity use high hardness wear-resisting material, be suitble to water carry iron sand injection, can
To increase substantially the service life of nozzle, and the nozzle also easily makes, and is used convenient for large-scale promotion.
In addition, the making formula for the high hardness wear-resisting material that the present invention mentions is as follows：80-100 parts of alumina powder, yttrium oxide
3-8 parts of powder, 1-2 parts of calcium bicarbonate, 1-3 parts of talcum powder, 1-3 parts of zirconium oxide, 0.01-0.03 parts of oleic acid, paraffin 0.04-0.05
Part, the inner cavity of formation is both wear-resisting and hardness or very high, and the structure of four cavitys is conveniently produced by mold；In addition, four
The two-step supercharging system of a cavity composition, is pressurized nozzle, not only supercharging effect is promoted, but also is reduced to nozzle compared to level-one
Impact also reduces the loud noise that only level-one supercharging nozzle generates, improves experimental situation.
The manufacture craft of the High Strength Wear-Resistance Material is as follows, by weight：
1）By 80-100 parts of alumina powder, 3-8 parts of yttrium powder of oxidation, 1-2 parts of calcium bicarbonate, 1-3 parts of talcum powder, zirconium oxide 1-
3 parts are milled to granularity as 1 μm, go out mill, mist projection granulating, superfine powder processed；
3）A. the superfine powder of 100 parts by weight is put into nodulizer, adds in 0.04-0.05 parts of paraffin, be uniformly mixed,
Sieving, it is 1--10 μm of powder of granularity that grain size, which is made,；
B will（a）Powder pours into slurrying filling, starts heating and stirring, observation is uniformly mixed, suction 0.1---
0.01atm, when temperature reaches 80 DEG C, pulp is fitted into nozzle die.
4）Dumping：In shuttle kiln adhesive contained by blank, 1000--1100 ° of dump temperature are removed by heating adsorbent
C。
5）Firing process is carried out according to following sintering curve：The speed of 50 DEG C/h rises to 300 DEG C from room temperature in kiln, so
Afterwards 1200 DEG C, when heat preservation 1 is small are warming up to 80 DEG C/h；Then 1750 DEG C are warming up to 90 DEG C/h, when heat preservation 2 is small after, drop naturally
For temperature to 300 DEG C, the nozzle cavity of high-strength abrasion-proof is made in kiln discharge.
Referring to the drawings 4-5, clamper of the invention（14）Downside be clamper seat（26）, clamper seat（26）With clamping
Device（14）Pass through four leading screws（27）Connection, leading screw（27）With threaded clamper（14）The clamping in experiment is realized in cooperation
The lifting fine tuning of device, improves the accuracy of experiment, weld seam is also made to obtain the elimination of better residual stress；The clamper seat
（26）One side be equipped with connecting rod（26.2）, connecting rod（26.2）Outer end be equipped with operating handle（26.3）, and by testing
Hole is threaded in the outer wall of case, with connecting rod（26.2）The thread fitting of outer wall makes connecting rod realize left and right horizontal direction
Fine tuning, also makes each position of weld seam obtain the injection of nozzle, the clamper seat（26）Both sides equipped with oblique angle shovel（26.1）,
The bottom of oblique angle shovel and the lower surface parallel contact of experimental box, in this way, can be struck off to the iron sand layer of deposition, not only make
The movement of clamper seat is more prone to, furthermore, it is possible to which iron sand deposits for a long time simultaneously, the problem of causing to be difficult to recycle.
The clamper of the present invention can realize the fine tuning of vertical direction, clamper seat by the cooperation of leading screw and clamper seat
The displacement of the horizontal direction of clamper seat is realized by connecting rod and operating handle, in this manner it is possible to be realized more to weld seam 15.1
Good injection, certainly, is additionally provided with sealing device, connecting rod is avoided to be caused through side wall herein at the threaded hole of the side wall of experimental box
Leakage；In addition, the outside of clamper seat is shoveled equipped with oblique angle, the bottom of oblique angle shovel and the lower surface parallel contact of experimental box, this
Sample can strike off the iron sand layer of deposition, not only be more prone to the movement of clamper seat, furthermore, it is possible to iron sand simultaneously
It deposits for a long time, the problem of causing to be difficult to recycle.
In addition, the clamper of the present invention（14）It is equipped with two flexible extruding items（14.2）, the extruding item
（14.2）One end pass through axis pin 14.3 and clamper（14）Flexible connection, the other end pass through buckle（14.4）It is fixed, pass through two
Item squeezes item（14.2）By workpiece（15）Both sides be fixed on clamp body（14.1）Upper surface.
Furthermore the experimental box that the present invention mentions（16）Inner wall be equipped with noise reduction layer, and top be equipped with movable top lid 29, though
Right nozzle has greatly reduced the noise of injection by transformation, but the liquid and iron sand that eject is when running into weld seam,
It rebounds again, and is present with some noises, at this moment, using the experimental box with noise reduction layer（16）, and in an experiment, it will be in activity
Lid fold forms the smaller structure of upper opening, can further reduce jet noise；Noise reduction layer in experimental box uses resistance to height
Warm glass fabric, rubber layer and stainless steel steel mesh form, wherein, stainless steel steel mesh is put into degreasing in commercially available metal degreasing agent
60-90 minutes, and further rapid draing 20 minutes in temperature is 80 degree of environment, then, by temperature resistant glass fiber cloth,
Rubber layer is sewed together with stainless steel steel mesh, forms noise reduction layer.In use, stainless steel steel mesh one side and experimental box（16）It is interior
Wall combines, and running into temperature resistant glass fiber cloth and rubber layer after injection liquid rebound realizes noise reduction, and effect is preferable.
In addition, the experimental method that a kind of mechanical welding stress that the present invention mentions eliminates, comprises the following steps：
One）The workpiece that will be welded（15）It is fixed on clamper（14）On, clamper（14）Mounted on experimental box（16）It is interior
Bottom of chamber portion；And dig movable top lid, reduce the upper opening of experimental box；
Two）Open switch board（10）, operate hydraulic controller（9）, make iron sand injector（7）Close to pending workpiece
（15）Top；Magnetic recycling machine（11）Experimental box is connected to from the upper opening of experimental box by pipeline（16）Inner cavity；Also, experimental box
（16）Inner cavity pass through pipeline and circulating pump（25）It is connected to water tank（1）；
Three）Start high-pressure pump（3）, to passing through water cleaning systems（2）Treated, and water is pressurized；Water tank（1）Inside it was equipped with
Strainer（1.1）, the water being pumped into experimental box Xun Huan first carries out coarse filtration, then passes through water cleaning systems（2）Carry out fine filtering purification；
Four）High pressure water is through high pressure line（8）, into throttle valve（19）With iron sand tank（5）, by adjusting iron sand tank（5）Under
The throttle valve of side（19）, change iron sand tank（5）Upper and lower pressure difference, so as to control the iron sand dosage being added in pipeline；
Five）Then adjust pressure-regulating valve（4）, when pressure reaches experiment setting value, open iron sand outlet valve（23）, iron
Sand is with high pressure water in mixing tank（17）Interior formation high pressure iron sand two phase flow, into iron sand injector（7）, through fluid jet nozzle（13）Add
High speed iron sand jet stream is formed after speed；Open simultaneously circulating pump（25）, by experimental box（16）Water squeeze into water tank（1）, realize water
It recycles；
Six）Operate hydraulic controller（9）, make iron sand injector（7）It is moved to pending workpiece（15）Place, and according to experiment
The requirement injection workpiece of setting（15）On weld seam；When needing fine tuning, pass through leading screw（27）With threaded clamper（14）Match somebody with somebody
It closes, realizes the lifting in experiment；It is rotated by operating handle, drives moving left and right for connecting rod, realize the fine tuning of horizontal direction；
Seven）To the end of experiment, high-pressure pump is closed（3）, closing control（10）, take out the workpiece handled；
Eight）Open magnetic recycling machine（11）, magnetic iron sand is recycled.
The above, is only the part preferred embodiment of the present invention, and any those skilled in the art may profit
Equivalent technical solution is changed or is revised as with the technical solution of above-mentioned elaboration.Therefore, technology according to the invention
Any simple modification or substitute equivalents that scheme is carried out, belong to the greatest extent the scope of protection of present invention.
Claims (1)
1. the combined experiments system of a kind of water-jet and iron sand injection, it is characterized in that：It is sprayed including high pressure liquid-supplying system, iron sand
Generation system, iron sand jet control system, iron sand recovery system and stent system, the high pressure liquid-supplying system include water tank（1）、
Cleaning system（2）, high-pressure pump（3）, pressure-regulating valve（4）And high-voltage tube（8）, water tank（1）In liquid water pass through cleaning system
（2）By high-pressure pump after processing（3）Supercharging, and pass through pressure-regulating valve（4）And high-voltage tube（8）It is delivered to iron sand injection generation system
System；
The iron sand injection generation system includes iron sand tank（5）, hydraulic motor（6）, iron sand injector（7）, mixing tank（17）, section
Flow valve（19）With iron sand outlet valve（23）, high pressure water is by throttle valve（19）Into iron sand tank（5）, adjust pressure-regulating valve（4）,
When pressure reaches experiment setting value, iron sand outlet valve is opened（23）, iron sand is with high pressure water in mixing tank（17）Interior formation high pressure
Iron sand two phase flow, into iron sand injector（7）；
The iron sand jet control system includes hydraulic controller（9）, switch board（10）, hydraulic oil pipe（24）, switch board（10）
Pass through hydraulic oil pipe（24）Connect hydraulic controller（9）, pass through hydraulic controller（9）Drive hydraulic motor（6）Action；
Iron sand recovery system uses magnetic recycling machine（11）, pass through magnetic recycling machine（11）It is connected to experimental box（16）, lead in experimental box
Cross clamper（14）Fixed workpiece（15）, iron sand injector（7）The nozzle of downside（13）Alignment pieces（15）It is sprayed；Stent
System includes upper backup pad（12）, supporting rod（18）And pedestal（20）；
The experimental box（16）Inner wall be equipped with noise reduction layer, noise reduction layer use temperature resistant glass fiber cloth, rubber layer and stainless steel
Steel mesh forms, and during making, stainless steel steel mesh is put into metal degreasing agent degreasing 60-90 minute, and is further 80 degree in temperature
Environment in rapid draing 20 minutes, then, temperature resistant glass fiber cloth, rubber layer and stainless steel steel mesh are sewed together,
Form noise reduction layer；And it is equipped with movable top lid at top（29）, by movable top lid（29）Fold forms the smaller structure of upper opening,
Jet noise can further be reduced；
The nozzle（13）Shape for pyramidal structure, inner cavity is equipped with four segment structures, is successively from top to bottom：First cylindrical cavity
（13.1）, the second cone-shaped cavity（13.2）, the 3rd cylindrical cavity（13.3）, the 4th cone-shaped cavity（13.4）, wherein, the first tubular
Cavity（13.1）Internal diameter be more than the 3rd cylindrical cavity（13.3）Internal diameter, the second cone-shaped cavity（13.2）Internal diameter be more than the 4th
Cone-shaped cavity（13.4）Internal diameter；
The nozzle（13）Using nozzle made of high hardness wear-resisting material, the making formula of high hardness wear-resisting material is as follows：
80-100 parts of alumina powder, 3-8 parts of yttrium powder of oxidation, 1-2 parts of calcium bicarbonate, 1-3 parts of talcum powder, 1-3 parts of zirconium oxide, oleic acid
0.01-0.03 parts, 0.04-0.05 parts of paraffin；
The manufacture craft of the high hardness wear-resisting material is as follows, by weight：
1）By 80-100 parts of alumina powder, 3-8 parts of yttrium powder of oxidation, 1-2 parts of calcium bicarbonate, 1-3 parts of talcum powder, 1-3 parts of zirconium oxide
Granularity is milled to as 1 μm, goes out mill, mist projection granulating, superfine powder processed；
3）A. the superfine powder of 100 parts by weight is put into nodulizer, adds in 0.04-0.05 parts of paraffin, be uniformly mixed, mistake
Sieve, it is 1--10 μm of powder of granularity that grain size, which is made,；
B will（a）Powder pours into slurrying filling, starts heating and stirring, observation is uniformly mixed, suction 0.1---
0.01atm, when temperature reaches 80 DEG C, pulp is fitted into nozzle die；
4）Dumping：In shuttle kiln adhesive contained by blank, 1000--1100 °C of dump temperature are removed by heating adsorbent；
5）Firing process is carried out according to following sintering curve：The speed of 50 DEG C/h rises to 300 DEG C from room temperature in kiln, then with
80 DEG C/h is warming up to 1200 DEG C, when heat preservation 1 is small；Then 1750 DEG C are warming up to 90 DEG C/h, when heat preservation 2 is small after, be naturally cooling to
300 DEG C, the nozzle cavity of high-strength abrasion-proof is made in kiln discharge；
The iron sand injector（7）Including top connection（7.1）, mandrel（7.2）, gland（7.3）, upper sealing ring（7.4）, upper packing
（7.5）, spring（7.6）, quick coupling（7.7）, sleeve body（7.8）, oil filler point（7.9）, baffle ring（7.10）, lower seal
（7.11）, the mandrel（7.2）Mounted on sleeve body（7.8）Inner cavity, and sleeve body（7.8）Bottom pass through fast quick access
Head（7.7）Connect nozzle（13）, mandrel（7.2）Top be equipped with top connection（7.1）, in mandrel（7.2）With sleeve body（7.8）
Between be equipped with gland（7.3）, upper sealing ring（7.4）, upper packing（7.5）, spring（7.6）, baffle ring（7.10）, lower seal
（7.11）, gland（7.3）Lower part be equipped with upper sealing ring（7.4）, upper sealing ring（7.4）Downside be equipped with upper packing（7.5）, on
Packing（7.5）Downside is equipped with spring（7.6）, spring（7.6）The outer wall at place is equipped with oil filler point（7.9）, oil filler point（7.9）Outside
It is fixed equipped with nut；
The clamper（14）Downside be clamper seat（26）, clamper seat（26）With clamper（14）Pass through four leading screws
（27）Connection, realizes the fine tuning of lifting；Sealing device is additionally provided at the threaded hole of the side wall of experimental box, connecting rod is avoided to pass through side
Wall causes leakage；The clamper seat（26）One side be equipped with connecting rod（26.2）, connecting rod（26.2）Outer end be equipped with operation
Handle（26.3）, realize the fine tuning in left and right horizontal direction, the clamper seat（26）Both sides equipped with oblique angle shovel（26.1）, oblique angle
The bottom of shovel and the lower surface parallel contact of experimental box, in this way, can be struck off to the iron sand layer of deposition；
The clamper（14）It is equipped with two extruding items（14.2）, the extruding item（14.2）One end and clamper（14）It is living
Dynamic connection, the other end pass through buckle（14.4）It is fixed, and the extruding item（14.2）By workpiece（15）Both sides be fixed on clamping
Device（14）Upper surface；
The experimental box（16）Pass through pipeline and circulating pump（25）It is connected to water tank（1）, realize recycling for water；The pressure
Regulating valve（4）One side pass through return duct（21）Joining water box（1）；The throttle valve（19）Upside pass through flow divider（22）Even
It is connected to iron sand tank（5）.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810403529.6A CN108950172A (en) | 2017-03-15 | 2017-03-15 | A kind of experimental method that machinery welding stress is eliminated |
| CN201710154465.6A CN106755922B (en) | 2017-03-15 | 2017-03-15 | A kind of combined experiments system and method for water-jet and iron sand injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710154465.6A CN106755922B (en) | 2017-03-15 | 2017-03-15 | A kind of combined experiments system and method for water-jet and iron sand injection |
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| CN201810403529.6A Withdrawn CN108950172A (en) | 2017-03-15 | 2017-03-15 | A kind of experimental method that machinery welding stress is eliminated |
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| CN1281832A (en) * | 1999-07-27 | 2001-01-31 | 湖南新华联特种材料有限公司 | Abrasion-resistant corundum ceramics |
| CN201405268Y (en) * | 2009-04-30 | 2010-02-17 | 聂百胜 | Mine pre-mixed abrasive water-jet cutting device |
| CN103128668B (en) * | 2013-02-28 | 2015-10-21 | 徐州浩通水射流科技有限公司 | A kind of front mixing abrasive water jet smart-cut machine |
| CN104911428B (en) * | 2015-04-13 | 2017-04-05 | 北京工业大学 | A kind of wear-resistant molybdenum alloy top and preparation method thereof |
| CN105506251B (en) * | 2015-12-23 | 2017-06-23 | 中国石油大学(华东) | High-pressure water jet eliminates material internal residual stress nozzle system and method |
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Effective date of registration: 20230908 Address after: Room 401, Floor 4, F2, Optical Valley Future City, No. 336 Yunhe Road, Dongying District, Dongying City, Shandong Province, 257000 Patentee after: Dongying Hongxin Enterprise Service Co.,Ltd. Address before: 257091 No. 105, Liaohe Road, Dongying District, Dongying City, Shandong Province Patentee before: Wang Luyang |