EP0041797A1 - Oberflächenbehandlung - Google Patents

Oberflächenbehandlung Download PDF

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Publication number
EP0041797A1
EP0041797A1 EP81302356A EP81302356A EP0041797A1 EP 0041797 A1 EP0041797 A1 EP 0041797A1 EP 81302356 A EP81302356 A EP 81302356A EP 81302356 A EP81302356 A EP 81302356A EP 0041797 A1 EP0041797 A1 EP 0041797A1
Authority
EP
European Patent Office
Prior art keywords
particles
coolant
duct
hopper
shot
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP81302356A
Other languages
English (en)
French (fr)
Inventor
Peter Frederick Gibbins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PARFLOOR Ltd
Original Assignee
PARFLOOR Ltd
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 PARFLOOR Ltd filed Critical PARFLOOR Ltd
Publication of EP0041797A1 publication Critical patent/EP0041797A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/06—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable
    • B24C3/065—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable with suction means for the abrasive and the waste material
    • B24C3/067—Self-contained units for floorings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/18—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions
    • B24C3/26—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions the work being supported by barrel cages, i.e. tumblers; Gimbal mountings therefor
    • B24C3/263—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions the work being supported by barrel cages, i.e. tumblers; Gimbal mountings therefor using refrigerating means
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/081—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades by thermal or cryogenic treatment, excluding heating to facilitate mechanical working
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/50—Methods or devices for preventing dust by spraying or sucking

Definitions

  • the invention relates to a surface treatment process and apparatus for performing the process and is applicable especially, but not exclusively, to removing rubber deposits and generally cleaning and/or texturing surfaces of roadways, airport runways and taxiways, and factory floors.
  • One particular application of the invention is for restoring the skid resistance of roadways, runways, etc. having a surface layer comprising aggregate and binder, for example coarse stone set in asphalt or bitumen.
  • aggregate protrudes from the asphalt or bitumen and provides good resistance to skidding for the types of a vehicle travelling across the surface.
  • the skid resistance deteriorates because the exposed aggregate surface becomes smooth due to polishing and deposition of rubber, lubriacting oil, dirt and even oil exuded from the asphalt or bitumen itself during hot weather. Skid resistance is further reduced by reduction of the exposed area of aggregate due to sinking of the aggregate into the bitumen or asphalt and also accumulation of rubber, dirt, oil etc. upon the surface of the bitumen or asphalt surrounding the individual pieces of aggregate. Deterioration is most marked near road junctions or other places where traffic accelerates or brakes.
  • a surface treatment process comprising removing surface material by bombardment with cooled shot, grit or other suitable particles.
  • the particles may be cooled before being applied to the surface or after especially if they are to be recycled. Such cooling of the particles at least reduces, if not effectively prevents, the risk of agglomeration due to heating by their impact upon the surface being treated,-particularly when the surface comprises bituminous material which will become hot and tend to stick to the particles.
  • the surface to be treated comprises heat sensitive material such as paint it may be advantageous to cool the surface as well as the particles.
  • the coolant may be cryogenic fluid such as liquid nitrogen or liquid carbon dioxide.
  • cryogenic fluid such as liquid nitrogen or liquid carbon dioxide.
  • particle bombardment sufficient to remove the unwanted deposits and reduce the level of the asphalt or bitumen also causes roughening or pitting of the exposed surface of the aggregate. This roughening or pitting further-enhances the skid resistance of the treated surface even to the extent that the aggregate obtrudes more than for a newly laid surface.
  • apparatus for performing the surface treatment process comprises means for bombarding the surface with shot, grit or other suitable particle to remove surface material and means for cooling the particles before or after impingement on the surface.
  • the apparatus of the invention may further comprise means for cooling the surface material to be removed to a temperature at which it becomes substantially i brittle.
  • Means for bombarding the surface to be treated may comprise a motor-driven impeller arranged to impel the particles downwards onto the surface.
  • a duct may then be provided extending upwardly from adjacent the position at which the particles impinge. upon the surface so as to receive the particles as they rebound from the surface. The duct conveys the particles to a hopper from where they - can be fed to the impeller again.
  • a fan or vacuum source is provided to maintain a strong flow of air through the duct to draw the removed material usually in powered form from the surface.
  • Separation of the shot, grit or other particles from this powered material may be effected by a separator disposed between the duct and the hopper.
  • the separator may operate by gravity and so may be a plate positioned between the duct and the hopper so that the heavier shot, grit or other particles will strike the plate and be deflected downwards towards the hopper for the shot, grit or other particles, whereas the powdered material remains in the air stream.
  • separation of the shot, grit or other particles from the powdered removed material may be by means of sieve screens.
  • the separator may be integral with the impellor carriage or be a separate unit.
  • the air stream carrying the powdered removed surface material will usually be drawn through a dust collection unit wherein the air stream is drawn through a series of dust filters, usually bags, on or in which the powdered material collects.
  • Coolant may be supplied to the particles at any suitable point or points in the apparatus of the invention.
  • the coolant is supplied in the region of the separator so that recycled particles are cooled prior to returning to the particle hopper.
  • recycled particles are cooled prior to returning to the particle hopper.
  • a particular advantage of applying coolant to the shot within the apparatus is that it can prevent heat build up within the apparatus itself and at the surface being treated.
  • the means for supplying coolant to the particles may comprise a spray nozzle or series of spray nozzles preferably directing coolant in the direction'of travel of the particles or air stream.
  • the applicator for applying coolant to the surface preferably includes a cowl housing a plurality of nozzles and/or baffles directing the coolant onto the surface over which the applicator is moved.
  • a flexible skirt may depend from the edges of the cowl to seal the surface and limit coolant loss.
  • the applicator include means for recycling the evaporated coolant so as to utilise the cold content thereof and thus reduce the amount of coolant needed.
  • the cowl has a generally horizontal strut fixed between a pair of opposite sides of the cowl so as to provide a flow path for coolant gas within the cowl and gas generated at the surface being treated is circulated in the applicator in a direction counter to the direction of travel of the applicator say by means of a motor driven fan.
  • the plurality of baffles within the applicator will increase turbulence and hence improve heat transfer.
  • an outlet may be provided with an adjustable opening to control the pressure within the applicator. The outlet may allow excess gas to escape to atmosphere or may be connected to the apparatus to permit further use of the gas in cooling the shot, grit or other particles or the air stream.
  • the apparatus of the invention preferably- also includes temperature control means so that the temperature at which the process is carried out can be selected for the particular surface materials being treated and so that the amount of coolant used can be kept to a minimum.
  • temperature sensing probes may be included in the apparatus at various points and may be connected to a valve controlling coolant flow so as to operate that valve according to the temperature sensed, i.e. if the temperature within the apparatus is too high the valve will operate to increase coolant flow or if the temperature is too low, the valve will operate to reduce the coolant flow.
  • Preferred positions for temperature sensing probes are just prior to the separator to measure the temperature of the air stream and just after the separator to measure the temperature of the returned shot grit or other particles. Further temperature sensing probes may usefully be situated just prior to the impeller and in the air stream after the separator at the exit from the apparatus, also on or close to the surface being treated.
  • the supply of coolant may be from a fixed tank e.g. above the applicator or from a mobile tank connected to the applicator or apparatus by flexible insulated cryogenic hose.
  • surface treatment apparatus comprises a carriage 10 supported by wheels 12 (only one shown) driven by a motor 13 for traversing across a surface 14 to be treated.
  • a steering and control handle 15 projects from the rear of the carriage.
  • an impeller 16 is supported in bearings 18 and 20 for rotation by a drive motor 24 about an axis 22 which is inclined rearwardly and downwardly at an acute angle to . the surface 14.
  • the impeller 16 is located at one end 26 of an elongate chamber 28, the other end 30 of which is open and adjacent the surface.
  • the axial inlet 32 of the impeller connects to the bottom of a hopper 34. Shot, grit or other particles fed from the hopper 34 into the rotating impeller 16 are impelled at high speed down the chamber 28 to impinge upon the surface 14.
  • a duct 36 extends upwards and forwards from a position adjacent the lower end 30 of the chamber 28.
  • the duct 36 is curved and its upper end 38 opens, generally vertically, into the hopper 34.
  • a deflector 40 projects upwards from the front interior wall 42 of the hopper, across and above the end 38 of the duct, and then curves towards the bottom of the hopper.
  • a pipe 46 connects the uppermost part of the hopper 34 to a dust collection/storage unit 48 which contains several dust bags 70, 72, 74 through which air is drawn from the hopper 34 by a suction fan 76.
  • the air enters the hopper 34 by way of the duct 36, which it enters at the lower end 30 adjacent the surface being treated.
  • Material removed from the surface by the-shot- blast in the form of dust together with the shot, is drawn up the duct by the air stream and into the hopper 34.
  • the shot strikes the deflector 40 and falls into the bottom of the hopper 34, whereas the dust remains entrained in the air stream and is thus carried to the dust collection/storage unit 48.
  • a cowl 52 projects from the front of the carriage 10, adjacent the surface 14, and is sealed at its edges to the surface by a depending skirt 54 of synthetic plastics fibres.
  • a series of spray nozzles 56 project downwards from the interior of the cowl 54 and serve to direct liquid nitrogen onto the surface 14 from a storage tank 58 supported on the cowl 52.
  • Baffles 60 are disposed between the spray nozzles 56 to ensure even distribution of the liquid nitorgen.
  • a separate spray nozzle 61 projects into the duct 36 and serves to inject liquid nitrogen into the stream of air and entrained surface material and shot as it passes through the duct.
  • the coolant would be applied to the shot after leaving the impeller and before striking the surface.
  • the spray nozzle 61 would be located in the chamber 28.
  • Cooling of the shot and/or entrained material in this way reduces the risk of agglomeration which might occur due to the heat generated when the shot strikes the surface.
  • the surface 14 is cooled by the liquid nitrogen to such an extent that the material to be removed (rubber, oil, grease or other deposits; or binder such as bitumen) is embrittled.
  • the embrittled material is then removed by the following shot blast.
  • the depth of material removed can be controlled by varying the application of the liquid nitrogen and shot and the speed of traverse of the apparatus. Typically surface temperatures of -25°C or less can be achieved with a traverse of 5-12 feet/minute. It will be appreciated that both the degree of cooling and the amount of material removed by the shot are directly dependent upon the time for which the surface is subjected to them, so coolant and shot application rates can be fixed and the depth of material to be removed controlled simply by varying the speed of traverse.
  • an opening or passage 62 communicates with the lower end of the duct 36 so that cold nitrogen gas is drawn into the duct from the cowl 52 and mixed with the air stream entraining the removed material.
  • the nitrogen gas in the duct assists cooling of the shot, and the removed material.
  • Figures 2 and 3 show a surface treatment apparatus generally similar to that of Figure 1 except that an applicator for surface cooling is not shown, although may be added and the apparatus is oppositely orientated to that of Figure 1.
  • an applicator for surface cooling is not shown, although may be added and the apparatus is oppositely orientated to that of Figure 1.
  • parts of Figures 2 and 3 will be given the same reference numbers as the corresponding parts of Figure 1 and only the differences will be described in detail.
  • the apparatus of Figures 2 and 3 has two pairs of wheels 12, the forward pair being driven by motor 13.
  • the apparatus in use will be driven in the direction of arrow A.
  • the impeller 16 is at the opposite end of the carriage to the steering and control handle 15. As in the apparatus of Figure 1 shot grit or other suitable particles are supplied to the impeller from hopper 34 via axial inlet 32.
  • the particles impelled at high speed onto the surface being treated rebound into generally parallel sided curved duct 36.
  • Adjacent the upper end of the duct 36 is an inclined separator plate 80 extending downwardly and rearwardly thus forming a passage 81 with wall 82 of the apparatus.
  • a pipe 46 connects the hopper 34 to a dust collection/storage unit (not shown) through which air is drawn by a suction fan.
  • a series of spray nozzles 83 supplied via pipe 84 from a source of cryogenic liquid.
  • Temperature sensing probes 85, 86 are situated in the exit of duct 36 and below the spray nozzles adjacent the end of passage 81 respectively.
  • grit or other particles are supplied to the impeller from hopper 34, are impelled onto the surface being treated and rebound into duct 36 where they together with removed surface material, usually in powder form, are drawn through the duct by the suction fan of the dust collection/storage unit.
  • the heavier shot, grit or other particles are deflected downwards into the hopper 34 and cooled by the cryogenic liquid supplied through the spray nozzles 83 which are - orientated so as to spray the cryogenic liquid in the direction of travel of the particles.
  • the lighter powdered surface material remains in the air stream and enters the dust collection/storage unit via pipe 46.
  • the air stream is-, of course, also cooled.
  • the positioning of the spray nozzles is such that some cooling of the unused particles will take place. Furthermore the apparatus will be kept cool and some cooling of the surface may also take place.
  • the temperature sensing probes 85, 86 are used to control the amount of cryogenic liquid used. They may provide a visual indication of the temperatures within the apparatus whereby the operator can alter the rate of flow of cryogenic liquid from its storage container or they can be included in an automatic flow control system such as shown in Figure 4 or Figure 5.
  • cryogenic liquid is supplied to spray nozzles 83 by line 90,
  • the line 90 includes a manual valve 91 usually situated at the liquid storage container of line 90 a relief valve 92 and a solenoid operated valve 93 at the apparatus end of line 90. Operation of the solenoid valve 93 is caused by controller 94 in response to the temperature sensed by probe 95.
  • the controller 94 can be set to open or close the valve 93 depending on the temperature sensed, so that if the temperature rises, the valve opens and if the temperature falls, the valve closes. In this way the amount of cryogenic liquid can be kept to a minimum.
  • cryogenic liquid is supplied to spray nozzles 100 from a storage container via line 101.
  • the line 101 includes a manual valve 102 a relief valve 103 and a pneumatically operated valve 104 at the apparatus end of line 101.
  • Pneumatic fluid is supplied to valve 104 via line 105.
  • a temperature sensing probe 106 causes operation of a controller 107 which in turn causes operation of fluid pump 108 in line 101.
  • the apparatus of Figures 2 and 3 does not require an applicator for cooling the surface to be treated unless the ambient temperature is fairly high say during summer, or in tropical climates, or if the surface to be treated includes very heat sensitive material such as paint.
  • FIG. 6 A simple form of applicator is shown in Figure 6 which comprises a cowl 150 enclosing a series of spray nozzles 152 and having a sealing skirt 154 to limit escape of coolant. Such an applicator can houever, result in considerable wastage of coolant. Thus recycling of coolant would be advantageous.
  • Two examples of suitable applicators for this purpose are shown in Figures 7 and 8.
  • an applicator 200 has spray nozzles 201 mounted at one end thereof connected to a supply of coolant (not shown) comprises a cowl 202 having a flexible sealing skirt 203 mounted on its bottom edge so as to contact the surface being cooled.
  • a supply of coolant (not shown) comprises a cowl 202 having a flexible sealing skirt 203 mounted on its bottom edge so as to contact the surface being cooled.
  • Fixed horizontally within the cowl 202 is a strut 204 which provides a coolant flow passage 206.
  • baffles 208 Depending from the strut 204 are a series of baffles 208.
  • the strut 204 also carries wheels 210.
  • the cutlet 214 has a rotatable baffle 216 to control the rate of flow of gas through the outlet.
  • the applicator 200 travels in the direction of arrow B and coolant liquid is sprayed onto the surface via the spray nozzles. As the coolant liquid strikes the surface it evaporates thus cooling the surface. The resultant gas is drawn along the passage 206 by the fan 212 and eventually strikes the baffles 208 as it reaches the surface under treatment. This increases the turbulance of the gas and enhances heat transfer and thus cools the surface ahead.of the spray nozzles. Thus the consumption of coolant can be significantly reduced.
  • the outlet can be opened to allow excess gas to escape to atmosphere or to be used for further cooling say within the shot blasting apparatus.
  • the applicator shown is similar to that of Figure 7 except that the spray nozzles 201 are situated adjacent the fan 212, so that the coolant liquid will already be in gaseous form before it strikes the surface.
  • embodiments of the invention are of particular advantage for restoring skid resistance of aggregate/binder road surfaces since they permit accurate and uniform reduction of the binder matrix and, at the same time, roughen the exposed surface of the aggregate.
  • the invention is also applicable to removing material from other surfaces, for example soap, fat, adhesives, etc. from concrete factory floors; rubber, resin and bituminous coatings from steel (e.g. bridge decks); removing traffic markings, such as painted or thermoplastics white lines, from roadways; preparing asphalt or bituminous road surfaces to provide a key for an additional coating of asphalt or bitumen.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Road Repair (AREA)
  • Cleaning In General (AREA)
EP81302356A 1980-06-05 1981-05-28 Oberflächenbehandlung Withdrawn EP0041797A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8018535 1980-06-05
GB8018535 1980-06-05

Publications (1)

Publication Number Publication Date
EP0041797A1 true EP0041797A1 (de) 1981-12-16

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Application Number Title Priority Date Filing Date
EP81302356A Withdrawn EP0041797A1 (de) 1980-06-05 1981-05-28 Oberflächenbehandlung

Country Status (3)

Country Link
EP (1) EP0041797A1 (de)
JP (1) JPS5721604A (de)
GB (1) GB2077157A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591520A1 (fr) * 1985-12-12 1987-06-19 Air Liquide Procede et appareil de traitement mecanique de pieces
WO2007128278A1 (de) * 2006-05-06 2007-11-15 Mtu Aero Engines Gmbh Verfahren zum oberflächenstrahlen eines bauteils
WO2021003023A1 (en) * 2019-07-02 2021-01-07 National Flooring Equipment, Inc. Temperature control for blast wheel housing

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61183507A (ja) * 1985-02-08 1986-08-16 新東工業株式会社 自動車走行テストコ−スの施工方法
US5125979A (en) * 1990-07-02 1992-06-30 Xerox Corporation Carbon dioxide snow agglomeration and acceleration
JP2774936B2 (ja) * 1994-07-07 1998-07-09 日本コンベヤ株式会社 チューインガム除去装置
WO2005038141A1 (ja) * 2003-10-22 2005-04-28 Build Maintec Co., Ltd. 路面の付着物除去装置並びに路面の付着物除去方法
JP4688063B2 (ja) * 2006-03-17 2011-05-25 株式会社日立プラントテクノロジー ブラスト媒体の回収装置
JP5707857B2 (ja) * 2010-10-27 2015-04-30 株式会社リコー 乾式クリーニング装置および乾式クリーニング方法

Citations (13)

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US2996846A (en) * 1959-07-29 1961-08-22 Bell Intercontrinental Corp Method and means for deflashing or trimming molded rubber parts
US3276234A (en) * 1963-07-11 1966-10-04 Pangborn Corp Freeze peening apparatus and method
DE1479859A1 (de) * 1964-05-12 1969-05-22 Wheelabrator Corp Vorrichtung zum Kuehlen und Entgraten von Formteilen aus Elastomeren und thermoplastischen Kunststoffen
US3528201A (en) * 1966-10-25 1970-09-15 Air Prod & Chem Low temperature apparatus for deflashing molded articles
US3676963A (en) * 1971-03-08 1972-07-18 Chemotronics International Inc Method for the removal of unwanted portions of an article
DE2312406A1 (de) * 1972-03-17 1973-10-11 France Etat Rutschfeste belaege, hergestellt unter verwendung von polymeren und deren herstellungsverfahren
US3824739A (en) * 1972-02-29 1974-07-23 Air Liquide Method and apparatus for continuously removing burrs from objects
US3858359A (en) * 1974-01-10 1975-01-07 Wheelabrator Frye Inc Mobile surface treating apparatus
US3877175A (en) * 1973-05-24 1975-04-15 Wheelabrator Frye Inc Mobile surface treating apparatus
US3934379A (en) * 1974-09-03 1976-01-27 Wisconsin Alumni Research Foundation Removal of built up layers of organic coatings
US3945155A (en) * 1974-01-14 1976-03-23 Wheelabrator-Frye, Inc. Method of removing ice from a surface by blasting
GB1480482A (en) * 1974-07-05 1977-07-20 Amey Roadstone Constr Ltd Treatment of road surfaces
FR2342821A1 (fr) * 1976-03-01 1977-09-30 Wheelabrator Frye Inc Appareil mobile pour le traitement de surfaces

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CH380363A (de) * 1959-07-29 1964-07-31 Wheelabrator Corp Verfahren und Vorrichtung zum Entgraten von Formstücken aus Elastomeren und thermoplastischen Kunststoffen, wie beispielsweise von Naturgummi, "Buna", "Neopren"
US2996846A (en) * 1959-07-29 1961-08-22 Bell Intercontrinental Corp Method and means for deflashing or trimming molded rubber parts
US3276234A (en) * 1963-07-11 1966-10-04 Pangborn Corp Freeze peening apparatus and method
DE1479859A1 (de) * 1964-05-12 1969-05-22 Wheelabrator Corp Vorrichtung zum Kuehlen und Entgraten von Formteilen aus Elastomeren und thermoplastischen Kunststoffen
US3528201A (en) * 1966-10-25 1970-09-15 Air Prod & Chem Low temperature apparatus for deflashing molded articles
US3676963A (en) * 1971-03-08 1972-07-18 Chemotronics International Inc Method for the removal of unwanted portions of an article
US3824739A (en) * 1972-02-29 1974-07-23 Air Liquide Method and apparatus for continuously removing burrs from objects
DE2312406A1 (de) * 1972-03-17 1973-10-11 France Etat Rutschfeste belaege, hergestellt unter verwendung von polymeren und deren herstellungsverfahren
US3877175A (en) * 1973-05-24 1975-04-15 Wheelabrator Frye Inc Mobile surface treating apparatus
US3858359A (en) * 1974-01-10 1975-01-07 Wheelabrator Frye Inc Mobile surface treating apparatus
US3945155A (en) * 1974-01-14 1976-03-23 Wheelabrator-Frye, Inc. Method of removing ice from a surface by blasting
GB1480482A (en) * 1974-07-05 1977-07-20 Amey Roadstone Constr Ltd Treatment of road surfaces
US3934379A (en) * 1974-09-03 1976-01-27 Wisconsin Alumni Research Foundation Removal of built up layers of organic coatings
FR2342821A1 (fr) * 1976-03-01 1977-09-30 Wheelabrator Frye Inc Appareil mobile pour le traitement de surfaces

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591520A1 (fr) * 1985-12-12 1987-06-19 Air Liquide Procede et appareil de traitement mecanique de pieces
EP0228939A1 (de) * 1985-12-12 1987-07-15 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Vorrichtung zur mechanischen Bearbeitung von Werkstücken
WO2007128278A1 (de) * 2006-05-06 2007-11-15 Mtu Aero Engines Gmbh Verfahren zum oberflächenstrahlen eines bauteils
WO2021003023A1 (en) * 2019-07-02 2021-01-07 National Flooring Equipment, Inc. Temperature control for blast wheel housing
US11498184B2 (en) 2019-07-02 2022-11-15 National Flooring Equipment, Inc. Temperature control for blast wheel housing
US11618128B2 (en) 2019-07-02 2023-04-04 National Flooring Equipment, Inc. Temperature control for blast wheel housing
US11685018B2 (en) 2019-07-02 2023-06-27 National Flooring Equipment, Inc. Temperature control for blast wheel housing

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GB2077157A (en) 1981-12-16
JPS5721604A (en) 1982-02-04

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