WO2012123098A1 - Procédé de fabrication d'un abrasif, procédé de sablage, abrasif, dispositif de fabrication d'un abrasif, dispositif de sablage - Google Patents

Procédé de fabrication d'un abrasif, procédé de sablage, abrasif, dispositif de fabrication d'un abrasif, dispositif de sablage Download PDF

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Publication number
WO2012123098A1
WO2012123098A1 PCT/EP2012/001105 EP2012001105W WO2012123098A1 WO 2012123098 A1 WO2012123098 A1 WO 2012123098A1 EP 2012001105 W EP2012001105 W EP 2012001105W WO 2012123098 A1 WO2012123098 A1 WO 2012123098A1
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WO
WIPO (PCT)
Prior art keywords
particles
blasting
water
blasting agent
ice
Prior art date
Application number
PCT/EP2012/001105
Other languages
German (de)
English (en)
Inventor
Jürgen Von Der Ohe
Original Assignee
Von Der Ohe Juergen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Von Der Ohe Juergen filed Critical Von Der Ohe Juergen
Priority to EP12709533.9A priority Critical patent/EP2694249B1/fr
Publication of WO2012123098A1 publication Critical patent/WO2012123098A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00—Selection of abrasive materials or additives for abrasive blasts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier

Definitions

  • the invention relates to a method for producing a blasting abrasive according to the preamble of claim 1, a blasting method according to the preamble of claim 9, a blasting abrasive according to the preamble of claim 1 1, an apparatus for producing a blasting abrasive according to the preamble of claim 12 and a device for blasting according to the preamble of claim 14.
  • WO 2003 101667 A1 discloses known CO 2 pellets as a solid blasting agent for cleaning surfaces.
  • the CO 2 pellets act as a soft, not very abrasive blasting agent, causing no damage to the surface to be cleaned. Due to the temperature of about -78 ° C, the CO 2 pellets caused a thermoelectric voltage between contamination and to clean component, which leads to the separation of the impurity (cryogenic effect).
  • JP 601 45 905 A a process is described in which the dry ice (C0 2 particles) should have a higher hardness by the addition of water in the C0 2 snow produced during the expansion of liquid C0 2 .
  • DE 35 05 675 A1 describes a method for removing surfaces, in which water ice (water particles) is added to a water jet.
  • the water jet is pressed with a dependent on the component to be cleaned, pressure on the surface to be cleaned.
  • the water ice can also be formed by ice-forming germs within the water jet.
  • a disadvantage of this method is that no cryogenic effect occurs but only a mechanical removal is recorded.
  • DE 100 10 012 A1 describes a device in which CO 2 pellets or CO 2 particles are mixed with a solid blasting agent at room temperature to improve the cleaning performance.
  • a disadvantage is the low constancy of the quantitative ratio between CO 2 radiation agent and the additional abrasive.
  • No. 5,785,581 describes a system in which a cryogenic liquid, preferably liquid nitrogen, is used as coolant for the production of ice particles.
  • a cryogenic liquid preferably liquid nitrogen
  • water droplets are introduced into a cooled compressed air stream, converted into ice and transported using the pressure gradient from the jet nozzle. Again, only a mechanical effect is recorded.
  • DE 10 2010 020 618 A1 describes a process for the production of CO 2 pellets or CO 2 particles having increased mechanical hardness and abrasiveness, in which CO 2 water ice particles are produced by supplying water.
  • the disadvantage of this is that the CO 2 irrigation ice particles still need to be crushed and thereby can be caused by the required pressure, again small amounts of water.
  • the object of the present invention is to provide a manufacturing method for a blasting agent that has a controllable abrasiveness and thus impurities from surfaces as possible can be removed without residue.
  • the component itself should not be damaged or removed.
  • the inventors have recognized that the object can be achieved in a surprising manner in that first solid particles of C0 2 and second solid particles are produced separately from water and then combined, in particular mixed.
  • first solid particles of C0 2 and second solid particles are produced separately from water and then combined, in particular mixed.
  • the first and second particles are produced by crushing.
  • larger units such as blocks of dry ice and water ice can be used, which is advantageous in terms of energy and storage.
  • the separately produced first and / or the second particles are comminuted before being combined.
  • the size can optionally be adjusted to the desired size in the blasting agent mixture after a certain temperature setting of the particles.
  • the temperature of the first particles is -60 ° C to -80 ° C, preferably -70 ° C.
  • the temperature of the second particles - 10 ° C to -40 ° C preferably - 15 ° C to -30 ° C, especially -25 ° C.
  • the pieces of water ice have a temperature of-1 ° C to -10 ° C, then the surface is still relatively moist.
  • the water ice pieces have in this state only a small hardness and size, which is higher than that of the C0 2 particles. If these pieces of water ice are mechanically comminuted to the desired size, water is re-formed, since the comminution tools have room temperature. If the water ice pieces, however, brought to a temperature of about -60 ° C to - 70 ° C, they have, as has been found in experiments, although a high hardness, but need for crushing a very high pressure, which in turn a local Water formation favors.
  • the first particles have a dimensioning of 0.4 mm to 1 mm, preferably 0.6 to 0.8 mm in the cross-sectional means and / or the second particles have a dimension of 0.6 mm to 1, 2 mm, preferably zugt 0.8 to 1, 0 mm in the cross-sectional means have. These sizes have proven to be effective during blasting.
  • the second particles are produced as flake ice prior to merging.
  • cross-sectional means in this context means that the dimension of least thickness has this size on average, and thus, flake ice having a spatial curvature due to the cylindrical geometry of the flake ice maker is the mean thickness of the flake ice.
  • the size and / or size distributions of the first and the second particles are each adjusted so that in each case the same masses or mass distributions result for the first and second particles. This is therefore of particular importance, because otherwise it can lead to a change in the set mixture or even to a segregation.
  • the particle sizes of C0 2 must be adjusted to set equal masses or mass distributions. Behave particles inversely proportional to water ice particles, so that there is no change in the set mixing ratio during transport through the compressed air stream. As a rule, values can not be kept exactly constant, which is why distributions result. When adjusting the masses or mass distributions via the targeted dimensioning, it must be ensured that these must be different depending on the temperature at hand.
  • the abrasiveness of the blasting agent is preferably adjusted by specifically setting the mixing ratio between the first and second particles, the shape of the second particles, the size of the second particles and / or the temperature of the second particles in the blasting medium.
  • Regarding the shape of the second particle have edged water ice particles a higher abrasiveness than those with curves. Larger second particles have a higher abrasiveness than smaller ones.
  • a mixture with more second particles has a higher abrasiveness than with less second particles.
  • the mixture can be arbitrarily set, for example, via the rotational speeds of respective shredders for the first and second particles.
  • the second particles have a higher abrasiveness at lower temperatures.
  • the size of the first and / or second particles in their production is so much greater than the size set in the blasting agent adjusted to compensate for size losses caused in the production of the blasting agent.
  • the desired size of the particles in the blasting medium is reliably achieved, despite the particles generated in the merger lose in size.
  • the first particles of CO 2 become smaller because they cool the second particles by sublimation.
  • the second particles are further cooled after their preparation in a special transport cooling unit, wherein they reach temperatures of about -20 ° C. At this temperature they have a hardness that is favorable for comminution and are dry. However, the hardness achieved does not yet bring the desired abrasiveness.
  • a further increase in the abrasiveness of the C0 2 water ice mixture is achieved by the, in a certain ratio separately comminuted C0 2 particles and water ice particles are mixed after crushing in a further cold chamber.
  • the cold chamber there is a direct contact between the C0 2 particles with a temperature of about -78 ° C and the water ice particles which have a temperature of about -20 to -30 ° C.
  • This direct contact leads to an energy exchange between the C0 2 particles and the water ice particles.
  • the water ice particles release heat, thereby increasing their hardness and the C0 2 particles absorb the heat released, which leads to a softening of the surface or to a formation of C0 2 gas.
  • the C0 2 gas produced after the mixing is used as a protective gas against heating and ambient air and / or used for cooling the second particle.
  • the cooling can be further improved by using C0 2 snow, liquid nitrogen and / or deep-frozen compressed air to cool the second particles.
  • first and second particles are stored so separated from each other before the merger that an at least partial temperature exchange can take place.
  • the first particles, the second particles and / or the blasting agent are cooled in two or more cooling planes. This significantly increases the cooling capacity.
  • a dried compressed air stream is used as dosing flow for the metering of the blasting medium and / or the blasting agent is provided with a dried compressed air stream as a jet stream having a temperature of + 40 ° C. to + 90 ° C., preferably + 50 ° C to + 90 ° C, in particular + 70 ° C to + 80 ° C. If the object to be irradiated itself is already heated, as is the case, for example, with vulcanizing molds, a separate heating of the jet stream can be dispensed with.
  • the heat capacity decreases as a result of the removal of heat during the transition of the C0 2 particles from the solid to the gaseous state. This leads to a deterioration of the cleaning performance and the formation of condensate.
  • the compressed air is dried and heated in dependence on the contamination. The C0 2 - water ice mixture is added to this dry and hot compressed air stream.
  • the C0 2 irrigation mixture is not damaged by the hot compressed air flow, since it is exposed to the above-mentioned temperature only a short time at the high flow rate and the short distance from the blasting machine to the blasting machine and due to the Leydenfrost phenomenon an insulating gas envelope around the individual particles of the C0 2 - forming water ice mix.
  • the hot and dry compressed air stream absorbs the moisture from the environment after leaving the jet nozzle and thus prevents condensation on the surface of the component to be cleaned.
  • blasting agent produced according to the invention which has solidified CO 2 and solidified water.
  • This blasting agent may also be separately prepared and delivered to blasting devices with suitable intermediate storage which maintains the desired temperature and humidity of the blasting medium.
  • independent protection is claimed for a device for producing a blasting medium for blasting bodies, surfaces, interiors and the like, which has solidified CO 2 and solidified water and is characterized in that supply means for separately generated first solid particles of CO 2 and second solid particles of water are provided and in particular a mixer for the first and second particles is provided.
  • the supply means can be designed, for example, as independent transport means, for example conveyor belts or transport plates.
  • a common means of transport can be provided, which is fed from two separate containers for the separately produced first and the second particles.
  • the first particles a dimensioning of 0.4 mm to 1 mm, preferably 0.6 to 0.8 mm in the cross-sectional means and / or means
  • the second particles have a dimension of 0.6 mm to 1, 2 mm to give preferably 0.8 to 1.0 mm in the cross-sectional means, the device in particular having a flake ice maker;
  • independent protection is claimed for a device for blasting bodies, surfaces, interiors and the like, comprising means for providing a stream of compressed air and means for providing a blasting agent, which is characterized in that the means for providing the blasting agent as the inventive device for Making a blasting agent is formed.
  • this device for blasting dosing for metering the blasting agent which use a dried compressed air stream as Dosierstrom and / or this device for blasting advantageously irradiation means for applying the irradiating object with the blasting agent, which use a dried compressed air stream as a jet stream, the a temperature of + 40 ° C to + 90 ° C, preferably + 50 ° C to + 90 ° C, in particular + 70 ° C to + 80 ° C.
  • the present invention provides a novel production process, in particular novel CO 2 pellets or CO 2 particles prior to entering into the compressed air flow with as edged Wassereis particles that are cooled in one or more stages So that they have a high hardness, brings together that a stable abrasive CO 2 water ice mixture is formed, wherein for a particular adjustment of the abrasivity in addition the temperature of the blasting medium is adjustable, with temperatures of about -70 ° C are preferred. The temperature adjustment takes place in particular in a separate cold chamber, in which the CO 2 water ice mixture is gradually cooled in several stages to -60 ° C to - 70 ° C, so that the water ice particles, for example, reach the desired hardness of glass.
  • the comminution of the C0 2 particles and the water ice particles is preferably carried out separately in one or more steps in a compact comminution block which is indirectly cooled by the CO 2 particles, thereby preventing the re-formation of water in the comminution tools.
  • FIG. 1 shows the device according to the invention for producing the blasting medium according to the invention and blasting in a first preferred embodiment
  • FIG. 2 shows the device according to the invention for producing the blasting medium according to the invention and for blasting in a second preferred embodiment
  • FIG 4 shows the device according to the invention for producing the blasting medium according to the invention and blasting in a third preferred embodiment.
  • Fig. 1 and 2 are purely schematically two different preferred embodiments of the device A, B according to the invention of the preparation of the invention Shedding means and shown in section for radiating, wherein the same elements are provided with the same reference numerals.
  • Fig. 1 it can be seen that the water ice prepared with conventional water ice conditioners 1, preferably flake ice 2, with a temperature of about -7 ° C, using a small conveyor belt 30 either on the conveyor belts 3 in the transport unit 5 or is conveyed into the water tank 31.
  • the water required for generating the flake ice 2 is conveyed by a pump 32 from the water tank 31 into the water ice conditioner 1.
  • the flake ice 2 On the conveyor belts 3, which run in the closed and outwardly insulated transport unit 5 via cooling blocks 4 and moved by the drive shafts 33, the flake ice 2 is transported from the water ice conditioner 1 to the crusher 6 and further to about -25 ° C. cooled.
  • the cooling is carried out by the cooling blocks 4 and is achieved by a, mounted outside the transport unit 5 blower 7, which sucks the air in the housing 5 via the upper nozzle 8 and blows on the lower nozzle 9 back into the transport unit 5.
  • the resting on the cooling blocks 4 baffles 10 are mutually offset on one side and force the air flow to flow through the spaces in the cooling blocks 4 which are flowed through with a special coolant mixture of the refrigeration unit 37 and cooled.
  • the air flow flows perpendicular to the direction of movement of the conveyor belts 3. This ensures that the air is cooled when flowing through the cooling blocks 4 and the overflow of moving through the conveyor belts 3 Scherbeneis 2 this extracts a certain amount of heat.
  • the transport unit 5 After the flake ice 2 on the conveyor belts 3, the transport unit 5 in several stages and thereby has reached the desired temperature of about -20 to -30 ° C, it passes to a small hopper 1 1 and from there to Brecherwerk 6.
  • the Crusher 6 is the C0 2 -Mahltechnik 12. About the C0 2 -Mahltechnik the reservoir 13 for the C0 2 -Pel lets 14 is arranged.
  • the small hopper 1 1, the crusher 6, the reservoir 13 and the C0 2 - grinder 12 form a closed unit. This ensures that the crusher 6 and the small hopper 1 1 through the C0 2 -Pel lets 14 in the supply container 13 received a certain precooling and warm only slightly during short breaks.
  • the crusher 6 is constructed in the usual way with hammers and an anvil bar.
  • the shown C0 2 -Mahltechnik is formed with opposing rollers.
  • the flake ice 2 due to the nature of the production, already partially comminuted in the water ice conditioner 1 by the scraping and further, but undefined, crushed by the change of conveyor belts 3, the flake ice 2 in Brecherwerk 6 and the C0 2 - Pel lets 14 crushed in C0 2 -Mahltechnik 12 to a well-defined size.
  • the size ratio of the water ice particles 15 formed during comminution to the CO 2 particles 16 is in inverse proportion to the density of the particles 15, 16 produced.
  • the resulting CO 2 - 16 and water ice particles 15 are subsequently mixed in a cold chamber 17, which in their basic structure that is similar to the transport unit 5 and is located directly below the crushing units 6, 12, mixed.
  • the mixing ratio between C0 2 - 16 and water ice particles 15 is variable and can be controlled by the speed of the C0 2 grinder 12 for the C02 pellets 14.
  • the cooling of the cold chamber 17 is carried out by a special cooling block 36, which is traversed by a refrigerant mixture from the refrigeration unit 37.
  • the C0 2 -water ice mixture 18 is gradually cooled to about -70 ° C by mixing it on plates 20 which are arranged in several planes 35, at a certain angle 21 to each other, and by the vibration of the cold chamber 17th , which is generated by a vibrator 19, is transported from one level 35 to the other.
  • the C0 2 particles 16 When mixing the C0 2 particles 16 come with a temperature of about -70 ° C with the water ice particles 15, which have a temperature of about -20 to -30 ° C, in direct contact.
  • the contact which constantly changes as a result of the vibration and the transition from one plane 35 to the other, results in an energy exchange between the CO 2 particles 16 and the water ice particles 15.
  • the CO 2 particles 16 withdraw the water ice Particles 15 energy and sublimate. Due to the energy withdrawal, the water ice particles 15 become colder and harder.
  • the C0 2 particles 16 become porous and soft by the transition of a part of its substance in the gaseous state at the surface.
  • the gradual decrease in temperature in the cold chamber 17 assists reconsolidation of the CO 2 particles 16 and the further increase in the hardness of the water ice particles 15.
  • the resulting by the sublimation CO 2 gas which is known to be heavier than air, remains in the cold chamber 17th and prevents the penetration of the ambient air or can be used to support the cooling in the cold chamber 17.
  • the CO 2 water ice mixture 18 with a temperature of about -70 ° C is added to the compressed air stream 22 in a metering unit 23.
  • the main compressed air stream 22 is absolutely dry (water content below 0.05g / m 3 ) and has a temperature of about +25 ° C.
  • the main compressed air stream 22 is divided, with a portion as dosing flow 24 to the dosing unit 23, which is located below the cold chamber 17, and there is loaded with the CO 2 irrigation ice 18.
  • the other part 25 of the main compressed air stream 22 is heated as jet stream 25 in the air heater 26 to a temperature of +50 ° C to +80 ° C and then reunited in the mixing chamber 27 with the metering 24 and led to the blasting gun 28.
  • Fig. 2 it can be seen that the solid CO 2 supplied in blocks 38 and stored in insulated containers 39.
  • the blocks of CO 2 38 and water ice 40 are pushed to produce the CO 2 water ice mixture 41 in cooled and insulated shafts 49 for the CO 2 blocks 42 and the water ice blocks 43 and lie on the rasp 44 for CO 2 , and the rasp 45 for water ice on.
  • the rasps 44, 45 have different pitches adapted to the density ratio.
  • the C0 2 particles 47 are separated from the C0 2 block 38 by means of the C0 2 rasp 44 and the water ice particles 48 are separated from the water ice block 40 by means of the water ice rasp 45.
  • the resulting water ice particles 48 are further cooled according to Example 1 to about -25 ° C and mixed in the cold chamber 17 with the C0 2 particles 47.
  • the C0 2 particles 47 are brought by means of the rotary valve 50 from the C0 2 reservoir 46 and the water ice particles 48 by means of the rotary valve 51 in the cold chamber 17.
  • the mixing ratio is set by the different speeds of the C0 2 rasp 44 and the water ice rasp 45.
  • FIGS. 1 and 2 purely schematically illustrate a third preferred embodiment of the device C according to the invention for producing the blasting medium according to the invention, wherein the same elements as in FIGS. 1 and 2 have the same reference numerals.
  • the cylindrical Cooling unit 52 has a plurality of annular cooling planes 54, under which cooling coils 55 are located (see in particular Fig. 3b).
  • the cooling coils 55 are connected to the cooling tubes 59 extending in the double wall 61 of the cylindrical cooling unit 52.
  • the cooling coils 55 and the cooling tubes 59 are flowed through by a mixture of refrigerants, which is moved by the refrigeration unit 56.
  • the C0 2 -water ice mixture 18 falls on the upper annulardeebene 57.
  • the annulardeebenen 54, 57 are not circumferentially closed, but each have after 360 ° a gap 58 through which the C0 2 -Wassereis mixture 18 to the next , lower lyingdeebene 54 falls.
  • the interruptions 58 in thedeebenen 54 are staggered so that the cooling path is as long as possible.
  • An agitator 60 with special sliders 62 provides for mixing in the cooling levels 54 and moves the C0 2 water ice mixture 18 on the cooling levels 54 from the point of application to the gap 58 in the corresponding cooling level 54. After the CO 2 - water ice Mixture 18 has passed through alldeebenen 54, 57, it is mixed in the metering unit 23 to the metering 24.
  • a fourth preferred embodiment of the inventive device D for producing the blasting agent according to the invention is shown purely schematically, wherein the same elements as in Fig. 1, 2, 3a and 3b have the same reference numerals.
  • CO 2 water ice mixture 18 consists of several individual assemblies which, procedurally and functionally related to each other and are mounted in a common frame 61.
  • the water ice conditioner 1, for generating the flake ice 2 is supplied by the pump 32 with water.
  • the spatially curved flake ice 2 falls on the small conveyor belt 30, which is moved by the motor 62 with the drive shaft 33 and guided by the guide roller 63 with the clamping device 64 and tensioned.
  • the small conveyor belt 30 conveys the flake ice 2 to the transport unit 5 and transfers it to the uppermost belt 30 of the transport belts 30 arranged several times above one another.
  • the conveyor belts 30 are located in the closed transport unit 5 and transport the flake ice 2 in several stages to the crusher plant 6.
  • the inclined conveyor belts 30 are provided with transverse to the conveyor belts 30 extending ribs 65.
  • the conveyor belts 30 run in each plane via drive shafts 33 and deflection rollers 63.
  • the drive shafts 33 are mounted in the base plate 67 and in the mounting plate 68 and are driven by a motor 69 via a toothed belt 70. Between the drive shaft 33 and the guide roller 63 is ever a cooling block 4, which is held by the support rods 71.
  • the transport unit 5 there are a plurality of fans 72 which move the C0 2 -containing air within the transport unit 5.
  • the flake ice 2 is remixed or turned over at each transition from one level to another.
  • the air flowing through the blower 72 C0 2 -containing air is cooled when flowing through the cooling blocks 4 and takes on the sweeping of the flake ice 2 heat.
  • the alternating flow through 25 of the cooling blocks 4 and the sweeping of the flake ice 2 on the conveyor belts 30 is supported by the mutual arrangement of the baffles 10.
  • the transport unit 5 rests on the crusher 6.
  • the crusher 6 In the crusher 6 is the fixed anvil strip 73 and the hammer shaft 74 with the hammer wheels 75, which provide the desired crushing of the flake ice 2.
  • the crusher 6 In addition to the crusher 6 is the C0 2 -Mahttechnik 12 for crushing the commercial C0 2 pellets 14.
  • About the C0 2 -Mahltechnik 12 is the reservoir 13 for the C0 2 pellets 14.
  • the control of the level in the reservoir 13 takes place through the sensor 76.
  • the crusher 6 and the C0 2 grinder 12 are mounted on the fixed plate 77.
  • the cold chamber 17 On the fixed plate 77, the cold chamber 17 is suspended resiliently so that the C0 2 -Wassereis mixture 18 by the oscillatory movements that are generated by the vibrator 19 can slide freely on the cooling plates 20 to the metering unit 23 and thereby through the cooling block 36 on cooled to the desired temperature.
  • the cooling block 36 is cooled by means of a special mixture of refrigerants, which is moved by the refrigeration unit 34.
  • the cooling blocks 4 are also cooled with a special mixed refrigerant, which is moved by the refrigeration unit 37.
  • the compressed air required for blasting is passed through the nozzle 78 in the heating unit 79 and divided.
  • the dosing flow 24 is passed unheated to the dosing unit 23 and there loaded with the brought to cryogen C0 2 -water ice mixture 18.
  • the jet stream 25 is heated in the heating unit 79 and brought together in the mixing chamber 27 with the charged with the C0 2 - water ice mixture 18 metering 24 and directed to the blasting gun (not shown).
  • a blasting medium is available which combines the thermal advantages of the C0 2 blasting technique and the advantageous mechanical action of the solid water ice.
  • controllable comminution units By means of controllable comminution units, the size and the mixing ratio of the CO 2 - 16 and the water ice particles 15 can be adjusted and regulated according to the type of contamination.
  • the C0 2 -water ice mixture 18 can be adjusted in its hardness and abrasiveness of the component to be cleaned and the contamination targeted.
  • the surfaces of the cleaned components are dry after cleaning and free from rust. Particularly advantageous has been found that there is the possibility to clean with the blasting agent according to the invention and large components in the installed state, without a time-consuming installation and removal is required.
  • the C0 2 -water ice mixture 18 can be used in conjunction with a specially prepared hot compressed air stream 22, for cleaning unheated components, while maintaining a certain temperature difference between the component and C0 2 -Wassereis- mixture 18.
  • Blower 39 Insulating tank Upper nozzle 40 Water ice block Lower nozzle 41 C0 2 Water ice mixture

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Cleaning In General (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un abrasif (18) composé de glace carbonique CO2 (16) et de glace hydrique (15), du fait que la glace carbonique CO2 (16) et la glace hydrique (15) sont fabriquées séparément et que la glace carbonique (15) continue éventuellement d'être refroidie au cours d'une ou de plusieurs étapes puis est mélangée à la glace carbonique CO2 (16). Le froid de la glace carbonique CO2 (16) et d'un refroidissement supplémentaire à l'aide d'un mélange spécial de fluides frigorigènes dans une chambre froide (17) permet d'atteindre une température du mélange (18) allant jusqu'à -70°C, et la glace hydrique (15) présente ainsi la dureté du verre.
PCT/EP2012/001105 2011-03-14 2012-03-12 Procédé de fabrication d'un abrasif, procédé de sablage, abrasif, dispositif de fabrication d'un abrasif, dispositif de sablage WO2012123098A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12709533.9A EP2694249B1 (fr) 2011-03-14 2012-03-12 Procédé de preparation d'un agent de grenaillage, procédé de grenaillage, agent de grenaillage, dispositif pour la preparation d'un agent de grenaillage et dispositif pour le grenaillage

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE102011014233.9 2011-03-14
DE102011014233 2011-03-14
DE102011106091 2011-07-01
DE102011106091.3 2011-07-01
DE102011119826.5 2011-12-01
DE201110119826 DE102011119826A1 (de) 2011-03-14 2011-12-01 Verfahren zur Herstellung eines Strahlmittels, Verfahren zum Strahlen, Strahlmittel, Vorrichtung zur Herstellung eines Strahlmittels, Vorrichtung zum Strahlen

Publications (1)

Publication Number Publication Date
WO2012123098A1 true WO2012123098A1 (fr) 2012-09-20

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Country Link
EP (1) EP2694249B1 (fr)
DE (2) DE202011108513U1 (fr)
WO (1) WO2012123098A1 (fr)

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DE102013224635A1 (de) 2013-11-29 2015-06-03 Lufthansa Technik Ag Verfahren und Vorrichtung zur Reinigung eines Strahltriebwerks
DE102013224639A1 (de) 2013-11-29 2015-06-03 Lufthansa Technik Ag Verfahren und Vorrichtung zur Reinigung eines Strahltriebwerks
DE202016101964U1 (de) 2015-04-20 2016-04-28 Dca Deckert Anlagenbau Gmbh Strahlvorrichtung
JP2016533517A (ja) * 2013-09-27 2016-10-27 カール・ツァイス・エスエムティー・ゲーエムベーハー 光学装置、特にプラズマ光源またはｅｕｖリソグラフィ装置
WO2016193112A1 (fr) 2015-05-29 2016-12-08 Lufthansa Technik Ag Procédé et dispositif pour le nettoyage d'un moteur à réaction
CN110666703A (zh) * 2019-09-12 2020-01-10 武汉大学 一种闭合自生磨料射流装置及利用其的实验方法
DE202023002302U1 (de) 2023-04-18 2024-03-08 Jürgen v.d. Ohe Vorrichtung zum Reinigen von Flächen und Anlagen mit einem mechanisch wirkenden kryogenen Strahlmittel aus tiefkaltem Wassereis

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KR20220126730A (ko) 2019-12-31 2022-09-16 콜드 제트 엘엘씨 강화된 블라스트 스트림을 위한 방법 및 장치

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EP3189934A1 (fr) 2013-11-29 2017-07-12 Lufthansa Technik AG Dispositif de nettoyage d'un moteur à réaction
DE102013224639A1 (de) 2013-11-29 2015-06-03 Lufthansa Technik Ag Verfahren und Vorrichtung zur Reinigung eines Strahltriebwerks
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US10247033B2 (en) 2013-11-29 2019-04-02 Lufthansa Technik Ag Method and device for cleaning a jet engine
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WO2016193112A1 (fr) 2015-05-29 2016-12-08 Lufthansa Technik Ag Procédé et dispositif pour le nettoyage d'un moteur à réaction
DE102015209994A1 (de) 2015-05-29 2016-12-15 Lufthansa Technik Ag Verfahren und Vorrichtung zur Reinigung eines Strahltriebwerks
US11215071B2 (en) 2015-05-29 2022-01-04 Lufthansa Technik Ag Method and device for cleaning a jet engine
EP4197659A1 (fr) 2015-05-29 2023-06-21 Lufthansa Technik AG Procédé et dispositif pour le nettoyage d'un moteur à réaction
CN110666703A (zh) * 2019-09-12 2020-01-10 武汉大学 一种闭合自生磨料射流装置及利用其的实验方法
CN110666703B (zh) * 2019-09-12 2021-04-16 武汉大学 一种闭合自生磨料射流装置及利用其的实验方法
DE202023002302U1 (de) 2023-04-18 2024-03-08 Jürgen v.d. Ohe Vorrichtung zum Reinigen von Flächen und Anlagen mit einem mechanisch wirkenden kryogenen Strahlmittel aus tiefkaltem Wassereis

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