WO2008026404A1 - Appareil de décapage de la surface interne de tubes en acier, procédé de décapage de la surface interne de tubes en acier et procédé de fabrication d'un tube en acier dont la surface interne présente d'excellentes propriétés de surface - Google Patents
Appareil de décapage de la surface interne de tubes en acier, procédé de décapage de la surface interne de tubes en acier et procédé de fabrication d'un tube en acier dont la surface interne présente d'excellentes propriétés de surface Download PDFInfo
- Publication number
- WO2008026404A1 WO2008026404A1 PCT/JP2007/064735 JP2007064735W WO2008026404A1 WO 2008026404 A1 WO2008026404 A1 WO 2008026404A1 JP 2007064735 W JP2007064735 W JP 2007064735W WO 2008026404 A1 WO2008026404 A1 WO 2008026404A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steel pipe
- carrier fluid
- abrasive
- blasting
- air
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
- B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
- B24C3/327—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes by an axially-moving flow of abrasive particles without passing a blast gun, impeller or the like along the internal surface
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
- B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
Definitions
- the present invention relates to a steel pipe inner surface blasting apparatus, a steel pipe inner surface blasting method, and an inner surface, which can cause an inner surface of various steel pipes to carry a polishing material or an abrasive to a carrier fluid to be polished or polished.
- the present invention relates to a method for producing a steel pipe having excellent surface properties.
- the high-pressure injection blasting apparatus conveys the abrasive or abrasive using high-pressure air as a carrier fluid, injects the steel pipe with one end force into the steel pipe, and causes the abrasive or abrasive to collide with the inner surface of the steel pipe In this way, the scale on the inner surface of the steel pipe is removed or the inner surface of the steel pipe is polished.
- the abrasive or abrasive material transported in the steel pipe by high-pressure air is collected by a collection tank with a filter installed at the other end of the steel pipe.
- the negative pressure suction blasting apparatus throws in an abrasive material or abrasive material stored in a supply device provided in the vicinity of the starting end of the steel pipe into the steel pipe from one end of the steel pipe, Air in the steel pipe is sucked from the other end of the steel pipe by a blower.
- the inside of the steel pipe is set to a negative pressure, and the abrasive or abrasive is transported by the negative pressure air flow generated by this, and the abrasive or abrasive is made to collide with the inner surface of the steel pipe. It removes the inner scale and polishes the inner surface of the steel pipe.
- the abrasive or abrasive material carried in the steel pipe by the negative pressure air flow is sucked into the blower from the other end of the steel pipe and discharged. It is collected by a gravity sedimentation dust collector, cyclone, dust collector with a filter, or a combination of these installed between the other end of the steel pipe and the blower, and part of it is recycled.
- Patent Document 1 there is the following Patent Document 1 regarding such a high-pressure injection blast device and a negative pressure suction blast device.
- the conventional high pressure injection blasting device and the negative pressure suction blasting device are referred to the problems as the blasting device, and a blasting device obtained by improving the conventional negative pressure suction blasting device has been proposed.
- the negative pressure suction blasting device the shape of the supply part of the abrasive or abrasive provided near the starting end of the steel pipe is devised, so that it is sucked into the steel pipe due to the negative pressure inside the steel pipe. It has been proposed that the negative air flow be swirled when the abrasive or abrasive material is transferred to the vicinity of the starting end of the steel pipe.
- Patent Document 1 Japanese Patent Laid-Open No. 5-228842
- FIG. 1 is a high-pressure injection blast device shown in FIG.
- the compressor 1 for injecting the abrasive and supplying the high-pressure air to be conveyed and the water in the air liquefied in the high-pressure air when the pressure of the air is increased are removed.
- the cyclone of the collector 9 and the polished material that has been polished and the high-pressure air that floats and conveys the polished material 8 and through the said dust collector 9 A blower 10 is connected, which sucks the air from the recovery tank 7 and sends the air from which the abrasives and abrasive scraps have been removed to the silencer 11.
- the abrasive material is conveyed using the high-pressure air flow 20 as a carrier, and the abrasive material 5 is caused to collide with the steel tube inner surface 6 so that the inner surface of the steel pipe is blasted.
- FIG. 2 is a schematic diagram when the abrasive 5 conveyed using the high-pressure air flow 20 as a carrier collides with the inner surface of the steel pipe.
- the abrasive material collides with the inner wall of the steel pipe with an incident angle ⁇ .
- the flow rate and static pressure of the air flow, the blasting material Work conditions such as type and quantity can be determined.
- the static pressure is set within 10 kg / cm 2 at the start of high-pressure injection to ensure the flow rate.
- abrasive granular materials such as sphere equivalent diameters of 10 m to 5 mm, alumina, sand, etc. are used.
- the working conditions are determined empirically, and test and blasting is performed under the working conditions, the working conditions are corrected, and the working conditions to be actually used are determined.
- the compressor 1 is operated in accordance with the working conditions, the generated moisture in the high-pressure air is removed by the air dryer 2, the abrasive is dropped from the abrasive tank 3 into the high-pressure air, and the high-pressure air is removed.
- One end force of the blast pipe 6 is sprayed onto the inner surface of the steel pipe 6 from the abrasive / fluid mixing section 4 mixed with air.
- the abrasive material that is transported suspended in high-pressure air reaches the other end of the blasted pipe 6 while cleaning the inner surface of the pipe, and is jetted into the recovery tank 7 together with the high-pressure air. Some abrasive material that has fallen and is not crushed is recovered here.
- the air containing the scoured scouring material is sucked into the blower 10, and the relatively large smashed scouring material is separated by the cyclone 8, and the crushed scouring material is cleaned. Waste is separated by a dust collector 9 and discharged to the atmosphere via a blower 10 and a silencer 11.
- the steel pipe needs to be rotated about its axis.
- the scouring ability is exerted only at a very local position in the vicinity of the injection port of the scouring material or abrasive material, the pressure fluctuation of the high-pressure air, the fluctuation of the particle inflow amount, the steel pipe rotation speed Unevenness occurs in the polishing ability due to factors such as unevenness and unevenness in the moving speed of the particle injection port.
- the high-pressure injection blasting device has no mechanism to reaccelerate the particles after the collision, so the particle injection port moves in the longitudinal direction.
- the high-pressure jet blasting apparatus has a problem of the solid-gas ratio of the abrasive or abrasive (amount of abrasive or abrasive per unit volume of air).
- the high-pressure air injected into the steel pipe expands and depressurizes in the steel pipe, increasing the volume.
- the solid-gas ratio inside becomes very small, and the blasting effect by the abrasive or abrasive becomes small.
- FIG. 3 shows a negative pressure suction blast device shown in FIG.
- a negative pressure air flow is sucked from the blasted pipe 6 through the recovery tank 7, the cyclone 8, and the dust collector 9, and the air from which the scouring material and scouring waste have been removed is sent to the silencer 11 and discharged.
- Connect blower 10 A negative pressure air flow is sucked from the blasted pipe 6 through the recovery tank 7, the cyclone 8, and the dust collector 9, and the air from which the scouring material and scouring waste have been removed is sent to the silencer 11 and discharged.
- Connect blower 10 10.
- the blast material / air supply unit 13 for supplying the blast material and a negative pressure air stream that floats and transports the blast material to the inside of the blast tube 6.
- the abrasive material is dropped from the abrasive material tank 3 into the abrasive material / air supply unit 13, and the abrasive material and air supply unit 13 are removed from the abrasive material / air supply unit 13 by negative pressure suction action.
- the negative pressure air stream that is transported in a suspended state is supplied to the inside of the blasted pipe 6, and the inner surface of the blasted pipe 6 is cleaned by the abrasive that is suspended and transported in this negative pressure air stream. Then, the scoured material and the negative pressure air flow after the scouring are sucked and discharged from the blast tube 6.
- the scouring material / air supply unit 13 is provided with turbulence generating means (not shown), and the scouring material is floated and transported in a turbulent negative pressure air flow. Therefore, the abrasive material contacts the inner surface of the blasted pipe 6 in a turbulent state.
- the abrasive 5 is conveyed using the negative pressure air flow suspended and conveyed in the negative pressure air stream as a carrier, and the abrasive is collided with the inner surface 6 of the steel pipe. As a result, the inner surface of the steel pipe is blasted.
- FIG. 4 is a schematic diagram when the abrasive 5 conveyed using the negative pressure air flow 15 as a carrier collides with the inner surface 6 of the steel pipe.
- the abrasive material collides with the inner wall of the steel pipe with an incident angle ⁇ .
- the negative pressure suction blasting device When blasting using this negative pressure suction blasting device, as with blasting using the high pressure injection blasting device, it is based on the material of the blasted tube 6, the inner diameter of the tube, the length, and the specifications of the blasting. Therefore, the working conditions such as the flow rate and negative pressure of the negative pressure air flow, and the type and amount of abrasive are determined. Normally, the negative pressure is set within 0 lKg / cm 2 .
- the abrasive is made of garnet, alumina, sand, or other granular material with a sphere equivalent diameter of about 10 m5 mm, just like blasting using a high-pressure jet blasting device.
- the working conditions are determined empirically, and test and blasting is performed under the working conditions, the working conditions are corrected, and the working conditions to be actually used are determined.
- Working conditions are determined According to this working condition, the abrasive is dropped from the abrasive tank 3 into the abrasive material 'air supply unit 13, and the abrasive is supplied into the blast pipe 6 by negative pressure suction action. The polishing material suspended in the negative pressure air flow reaches the end of the blast pipe 6 while polishing the inner surface of the pipe, and is subjected to gravity sedimentation dust collector 7, cyclone 8, The dust collector 9 with a filter is collected by!
- the negative pressure suction force generated by the blower, the negative pressure air flow conveying the polishing material or the abrasive from the air supply pipe, is sucked, and in this state, the polishing is performed. Since the abrasive or abrasive supplied from the supply part of the scavenging material or abrasive is mixed with the negative pressure air flow, it is floated and conveyed by the negative pressure air flow from there to the blower. The speed of the abrasive or abrasive material that is transported suspended by the air flow can reach 20 to 50% of the wind speed of the negative pressure air flow in the steel pipe, so the inner surface of the steel pipe is polished or polished.
- the speed of the abrasive or abrasive that is conveyed suspended by the negative pressure air flow can reach about 20 to 50% of the wind speed of the negative pressure air flow in the steel pipe.
- the static pressure when the abrasive or abrasive supplied from the scavenging or abrasive supply section mixes with the negative pressure air flow, and when the conveyed abrasive or abrasive passes through the steel pipe. Since the fluctuation of the static pressure is smaller than that of the high-pressure jet blasting device, the abrasive or abrasive can be mixed with the negative pressure air flow up to the upper limit that can be floated and conveyed.
- the solid-gas ratio of the abrasive or abrasive (such as the abrasive or per unit volume of air) found in high-pressure jet blast equipment. It is not necessary to take into account the decrease in the amount of abrasives) and the problem!
- the polishing material or the abrasive stored in the supply device provided in the vicinity of the starting end portion of the steel pipe is thrown into the steel pipe at one end of the steel pipe, and from the other end of the steel pipe. Since the air in the steel pipe is sucked by the blower, the particle density or the particle velocity sufficient to blast the inner surface of the steel pipe may not be formed in the vicinity of the starting end of the steel pipe. In this case, the starting end of the steel pipe cannot be sufficiently polished or polished.
- Patent Document 1 in the negative pressure suction blasting device, the negative pressure inside the steel pipe is reduced by devising the shape of the supply portion of the abrasive or abrasive provided near the starting end of the steel pipe. It has been proposed that the negative pressure air flow be swirled when the abrasive or abrasive is transported to the vicinity of the starting end of the steel pipe by being transported to the negative pressure air stream sucked into the steel pipe. However, there is a problem that the blasting effect is inferior at the terminal part because the swirl component of the air velocity is attenuated.
- the present invention solves the above-mentioned conventional problems, and can sufficiently blast the inner surface of the steel pipe from the start end to the end of the steel pipe and improve the blasting capability and the steel pipe inner surface blasting method.
- the purpose is to provide.
- the present inventors have conducted various studies to provide a steel pipe inner surface blasting apparatus and a steel pipe inner surface blasting method capable of sufficiently blasting the inner surface of the steel pipe from the start end to the end of the steel pipe and improving the blasting ability. Piled up. As a result, the following findings (a) to (h) were obtained.
- an axial tube coaxial with the cylinder of the carrier fluid introducing portion is provided inside the cylindrical carrier fluid introducing portion, and a hole provided in the end surface of the cylindrical carrier fluid introducing portion is provided in the axial tube. If a carrier fluid that transports the abrasive or abrasive that is pressed in horizontally is passed, a stable wind speed can be secured when the carrier fluid is ejected. Also, by adjusting the length, outlet diameter, outlet shape, and carrier fluid speed of the shaft tube, the carrier fluid that carries the pressed-in abrasive material or abrasive material is fed to the steel pipe starting end portion at a predetermined angle. It can be made to collide.
- the polishing material or the abrasive together with the carrier fluid is placed in the cylindrical carrier fluid introducing portion.
- the carrier fluid that transports the abrasive or abrasive material swirls the inner surface of the steel tube by combining the flow that rotates the inner surface of the steel tube in the circumferential direction. It is preferable to disperse the particles throughout the cross section by forming a swirling flow and winding up the polishing material or abrasive to the upper surface in the steel pipe.
- Such a flow rotating in the circumferential direction on the inner surface of the steel pipe has one air inlet for introducing air into the carrier fluid introducing portion in the cylindrical portion of the cylindrical carrier fluid introducing portion. Or it is formed by providing two or more. In order for the air flow introduced from the air introduction port to rotate in the circumferential direction on the inner surface of the steel pipe, the air flow introduced from the air introduction port is moved in the circumferential direction of the inner wall of the cylindrical carrier fluid introduction part. Induction is preferred. Specifically, by providing a whistle-shaped air introduction device at the air introduction port, the air flow sucked or pressed from the air introduction port is directed upward or downward along the inner wall of the cylindrical carrier fluid introduction part. Is preferably induced.
- a high-pressure fluid is used as a carrier, and a polishing material or an abrasive is injected into the steel pipe, and air in the steel pipe is sucked from the terminal portion of the steel pipe to create a negative pressure in the steel pipe.
- the steel pipe can be sufficiently blasted from the start to the end.
- the blasting was incomplete in a part of the steel pipe, but by using a hybrid blasting device that combines high pressure injection and negative pressure suction, The steel pipe can be sufficiently blasted from the start to the end.
- the air introduction loca of the carrier fluid introduction part, and also the abrasive or abrasive are used. By supplying, the blasting ability of the inner surface of the steel pipe can be improved.
- the present invention has been completed on the basis of these new findings, and a steel pipe inner surface blasting apparatus according to the present invention has the gist of any of the following (1) to (9):
- the steel pipe inner surface blasting method according to the present invention is summarized in the following (10), and the method of manufacturing a steel pipe excellent in inner surface properties according to the present invention is as follows (11). Is a summary.
- the present invention is referred to as (1) to (11), respectively.
- the present invention (1) to (11) are collectively referred to as the present invention.
- a steel pipe inner surface blasting device comprising a cylindrical carrier fluid introduction part connected to one end of a horizontally installed steel pipe, and a negative pressure suction part connected to the other end of the steel pipe,
- a steel pipe inner surface block is characterized in that a polishing material or an abrasive is pressed into the carrier fluid introduction part together with the carrier fluid in a horizontal direction from a hole provided in an end face of the cylindrical carrier fluid introduction part.
- a steel pipe inner surface blasting device comprising a cylindrical carrier fluid introduction part connected to one end of a horizontally installed steel pipe, and a negative pressure suction part connected to the other end of the steel pipe, A steel pipe inner surface blasting apparatus, wherein a polishing material or an abrasive is pressed into a carrier fluid introduction part together with a carrier fluid in a horizontal direction from a hole provided in the center of an end face of a cylindrical carrier fluid introduction part.
- the cylinder portion of the cylindrical carrier fluid introduction portion is provided with one or more air introduction loci for introducing air into the carrier fluid introduction portion. ) ⁇ (4)
- V slippery steel pipe inner surface blasting device
- V slippery steel pipe inner surface blasting device
- the inner surface of the steel pipe can be sufficiently blasted from the start end portion to the end portion of the steel pipe, and the steel pipe inner surface blasting device, the steel pipe inner surface blasting method, and the inner surface property of the inner surface are improved.
- the manufacturing method of can be provided.
- FIG. 5 is an example of a steel pipe inner surface blasting apparatus according to the present invention, and shows an overall view of the steel pipe inner surface blasting apparatus.
- This steel pipe inner surface blasting apparatus uses a high-pressure fluid as a carrier fluid 20 and injects a polishing material into the blast pipe (steel pipe) 6 and sucks air in the steel pipe from the end of the steel pipe 6.
- This is a hybrid blasting device that makes the inside of a steel pipe negative pressure and combines high-pressure injection and negative pressure suction. Since there is little fluctuation in the pressure of the carrier fluid from the start end to the end of the blast pipe (steel pipe) 6, it is necessary to blast the inner surface of the steel pipe in the blast pipe (steel pipe) 6. The flow rate is sufficiently secured.
- the abrasive material stored in the abrasive material tank 3 is dropped into the high-pressure air stream 20 supplied from a compressor (not shown), and the abrasive material is applied to the high-pressure air.
- the abrasive / fluid mixing section 4 to be mixed is provided on the start side of the blast pipe (steel pipe) 6 through the cylindrical carrier fluid introduction section 21 and the dummy pipe 23.
- the blast material having finished the inner surface of the blast pipe 6 and the negative pressure air flow that carries the blast material in a suspended state are provided.
- a gravity sedimentation type recovery tank 7 is installed to separate the abrasive and air, and after passing through the cyclone 8 and the dust collector 9, the air from which abrasive particles other than ultrafine particles have been removed is silenced.
- Blower 10 is connected to 11 and discharged. A part of the abrasive is collected by the gravity sedimentation dust collector 7 and / or the cyclone 8 and recycled to the abrasive tank 3 by mechanical and / or fluid conveying means 14.
- FIG. 6 shows a cylindrical carrier fluid introduction part of the steel pipe inner surface blasting apparatus shown in FIG. An enlarged view (perspective view) is shown.
- the cylindrical carrier fluid introduction part 21 has a hole 19 for pressing the abrasive together with the carrier fluid 20 into the carrier fluid introduction part 21 in the horizontal direction, and an end face of the cylindrical carrier fluid introduction part 21. Have in the center of.
- the carrier fluid introducing portion 21 is an axial tube coaxial with the cylinder of the carrier fluid introducing portion.
- the carrier fluid 20 that conveys the abrasive that has been pressed horizontally into the shaft tube from the hole 19 provided in the end surface of the cylindrical carrier fluid introduction portion 21 is press-fitted at a longitudinal speed V, It passes through the shaft tube at a longitudinal speed V.
- the carrier fluid 20 that transports the abrasive in the horizontal direction passes through the shaft tube, and then a radial velocity V is applied due to the spread of the jet of carrier fluid.
- the abrasive material conveyed by the carrier fluid 20 is subjected to the velocity V shown in the following equation (1) by adding the radial velocity V to the longitudinal velocity V. It will collide with a blast pipe (steel pipe) 6.
- V (V 2 + V 2 ) 1/2 Equation (1)
- the force in which the length of the shaft tube 22 is set to be the same as the length of the cylindrical carrier fluid introducing portion 21 is adjusted by adjusting the length of the shaft tube 22 and the speed of the carrier fluid 20. Since the carrier fluid 20 carrying the scavenging material can collide with a predetermined angle and a predetermined position, the abrasive fluid conveyed by the carrier fluid 20 is adjusted so as to start colliding from the inner surface of the steel pipe starting end. It is recommended to set the length of the big shaft 22. Further, here, the dummy pipe 23 is installed between the steel pipe starting end portion installed horizontally and the cylindrical carrier fluid introduction portion 21. By installing the dummy tube 23, the inner surface including part of the dummy tube 23 can be blasted, so that the abrasive can be reliably blasted from the starting end of the inner surface of the steel tube.
- FIG. 7 is another example of the steel pipe inner surface blasting apparatus according to the present invention, and shows an overall view of the steel pipe inner surface blasting apparatus.
- the high-pressure fluid is used as the carrier fluid 20 and the abrasive is injected into the blast pipe (steel pipe) 6 and the end portion of the steel pipe 6 is used.
- This is a hybrid-type blasting device that combines high-pressure injection and negative-pressure suction to suck the air in the pipe and create a negative pressure inside the steel pipe.
- the air 24 is used as the carrier fluid introduction part 21. It has an air inlet 25 for introduction into the interior.
- a swirl flow is formed along the inner wall of the carrier fluid introduction portion by the air 24 sucked or press-fitted from the air introduction port.
- the abrasive 5 that is pressed together with the carrier fluid 20 from the horizontal direction is mixed with the carrier fluid in the abrasive / fluid mixing section 4 and then pressed into the carrier fluid introduction section 21 from the horizontal direction.
- the blast pipe (steel pipe) 6 Since the fluctuation of the pressure of the carrier fluid is small from the start end to the end of the blast pipe (steel pipe) 6, the blast pipe (steel pipe) 6 is used for blasting the inner surface of the steel pipe. The necessary flow rate is sufficiently secured.
- the abrasive material stored in the abrasive material tank 3 is dropped into the high-pressure air stream 20 supplied from a compressor (not shown), and the abrasive material is applied to the high-pressure air.
- the abrasive / fluid mixing section 4 to be mixed is provided on the start side of the blast pipe (steel pipe) 6 through the cylindrical carrier fluid introduction section 21 and the dummy pipe 23.
- the structure of the abrasive material 'fluid mixing section 4 is the same as that shown in Fig. 2, and the high-pressure air flow 20 supplied through the nozzle 16 and the abrasive material 5 supplied through the feeder 17 are Then, they are mixed in the differential user 18 and conveyed to the carrier fluid introduction part 21.
- the blast material that has finished the inner surface of the blast pipe 6 and the negative pressure air flow that carries the blast material in a suspended state are provided.
- a recovery tank 7 is installed to separate the abrasive and air that has not yet been crushed and removed, and the unloading means 14 for carrying out the abrasive separated in the recovery tank 7 The abrasive is returned to the abrasive tank 3).
- the recovery tank 7 includes a cyclone 8 and a dust collector 9 for separating the crushed scouring material and the scouring waste and the negative pressure air flow, and the scouring material after the scouring and the scouring material.
- the negative pressure air stream that is transported in a suspended state is sucked from the blasted pipe 6 through the recovery tank 7, the cyclone 8, and the dust collector 9, and the air from which the abrasive is removed is cleaned.
- the blower 10 to send and discharge to the silencer 11 is connected!
- FIG. 8 shows a cylindrical carrier fluid introduction in the steel pipe inner surface blasting apparatus according to the second embodiment.
- the enlarged view (perspective view) of a part is shown.
- the cylindrical carrier fluid introduction part 21 includes a hole 19 for pressing the abrasive together with the carrier fluid 20 into the carrier fluid introduction part 21 in the horizontal direction, and an end surface of the cylindrical carrier fluid introduction part 21. Have in the center of.
- the cylindrical carrier fluid introduction part 21 has an air introduction port 25 for introducing the air 24 into the carrier fluid introduction part 21.
- a swirl flow having a circumferential velocity V is formed along the inner wall of the carrier fluid introduction portion by the air 24 sucked or press-fitted from the air introduction port 25.
- the carrier fluid introduction part 21 has a shaft tube 22 coaxial with the cylinder of the carrier fluid introduction part, and a hole provided in the end surface of the cylindrical carrier fluid introduction part 21 in the shaft tube.
- a carrier fluid 20 that transports the abrasive pressed horizontally from 19 is press-fitted at a longitudinal speed V, and is passed through the z-axis tube at a longitudinal speed V.
- the abrasive material conveyed by the carrier fluid 20 is the following (
- V (V 2 + V 2 + V 2 ) 1/2 (2)
- the length of the shaft tube 22 is set to be the same as the length of the cylindrical carrier fluid introducing portion 21, but the pressure can be adjusted by adjusting the length of the shaft tube 22 and the speed of the carrier fluid 20.
- the carrier fluid 20 that transports the scoured abrasive material can be made to collide with the steel pipe starting end at a predetermined angle, so that the abrasive fluid conveyed by the carrier fluid 20 collides with the inner surface of the steel pipe starting end. It is better to set the length of the tube shaft 22 to be adjusted to start.
- the dummy pipe 23 is installed between the steel pipe starting end part installed horizontally and the cylindrical carrier fluid introduction part 21.
- the inner surface including a part of the dummy tube 23 can be blasted, so that the abrasive can be reliably blasted from the starting end of the inner surface of the steel tube.
- FIG. 9 is another example of the steel pipe inner surface blasting apparatus according to the present invention, and shows an overall view of the steel pipe inner surface blasting apparatus.
- a swirling flow is formed along the inner wall of the carrier fluid introducing portion by the air 24 sucked or press-fitted from the air introducing device 26.
- the abrasive 5 that is press-fitted together with the carrier fluid 20 from the horizontal direction is mixed with the carrier fluid in the abrasive material / fluid mixing unit 4 and then the horizontal force is also injected into the carrier fluid introduction unit 21.
- the blast pipe (steel pipe) 6 Since the fluctuation of the pressure of the carrier fluid is small from the start end to the end of the blast pipe (steel pipe) 6, the blast pipe (steel pipe) 6 is used for blasting the inner surface of the steel pipe. The necessary flow rate is sufficiently secured.
- the abrasive stored in the abrasive tank 3 is dropped into the high-pressure air stream 20 supplied from a compressor (not shown), and the abrasive is applied to the high-pressure air.
- the abrasive / fluid mixing section 4 to be mixed is provided on the start side of the blast pipe (steel pipe) 6 through the cylindrical carrier fluid introduction section 21 and the dummy pipe 23.
- the structure of the abrasive material 'fluid mixing section 4 is the same as that shown in Fig. 2, and the high-pressure air flow 20 supplied through the nozzle 16 and the abrasive material 5 supplied through the feeder 17 are Then, they are mixed in the differential user 18 and conveyed to the carrier fluid introduction part 21.
- the blast material having finished the inner surface of the blast pipe 6 and the negative pressure air flow that carries the blast material in a suspended state are provided.
- a recovery tank 7 is installed to separate the abrasive and air that has not yet been crushed and removed, and the unloading means 14 for carrying out the abrasive separated in the recovery tank 7
- the abrasive is returned to the abrasive tank 3).
- the recovery tank 7 contains crushed abrasive material and abrasive scraps.
- the cyclone 8 and the dust collector 9 for separating the negative pressure air flow, the polished material that has been cleaned, and the negative pressure air flow that floats and transports the cleaned material are recovered from the blasted pipe 6
- FIG. 10 shows an enlarged view (perspective view) of a cylindrical carrier fluid introduction portion in the steel pipe inner surface blasting apparatus according to the third embodiment.
- the cylindrical carrier fluid introduction section 21 has a hole 19 for pressing the abrasive 5 together with the carrier fluid 20 into the carrier fluid introduction section 21 in the horizontal direction. At the center of the end face.
- the cylindrical carrier fluid introduction part 21 has a whistle-shaped air introduction device 26 for introducing the air 24 into the carrier fluid introduction part 21.
- a swirling flow synthesized from the circumferential velocity V and the radial velocity V is formed along the inner wall of the carrier fluid introduction portion by the air 24 sucked or press-fitted from the air introduction device 26.
- the carrier fluid introduction part 21 has a shaft tube 22 coaxial with the cylinder of the carrier fluid introduction part, and a hole provided in the end surface of the cylindrical carrier fluid introduction part 21 in this shaft tube.
- a carrier fluid 20 that transports the abrasive pressed horizontally from 19 is press-fitted at a longitudinal speed V, and is passed through the z-axis tube at a longitudinal speed V.
- the carrier fluid 20 that transports the abrasive in the horizontal direction passes through the shaft tube, and then a swirl flow formed by the air 24 sucked or injected from the air introduction device 26 is added, and the velocity is Synthesized from longitudinal velocity V, circumferential velocity V and radial velocity V
- the abrasive material transported by the carrier fluid 20 is transferred to the blasted tube (steel tube) 6 at the speed V shown in the following equation (2) as in the embodiment. It will collide.
- V (V 2 + V 2 + V 2 ) 1/2 (2)
- the length of the shaft tube 22 is set to be the same as the length of the cylindrical carrier fluid introducing portion 21, but the pressure can be adjusted by adjusting the length of the shaft tube 22 and the speed of the carrier fluid 20.
- the carrier fluid 20 that transports the scoured abrasive material collides with the steel pipe start end at a predetermined angle. Therefore, it is better to set the length of the shaft tube 22 that is adjusted so that the abrasive material conveyed by the carrier fluid 20 starts to collide from the inner surface of the steel pipe.
- the dummy pipe 23 is installed between the steel pipe starting end part installed horizontally and the cylindrical carrier fluid introduction part 21.
- the inner surface including a part of the dummy tube 23 can be blasted, so that the abrasive can be reliably blasted from the starting end of the inner surface of the steel tube.
- FIG. 11 is another example of the steel pipe inner surface blasting apparatus according to the present invention, and shows an overall view of the steel pipe inner surface blasting apparatus.
- the whistle-shaped air introduction device 26 In addition to having a whistle-shaped air introduction device 26 for introduction into the interior of 21, the whistle-shaped air introduction device 26 also carries the abrasive material stored in the abrasive material tank 3 as a carrier. The fluid is supplied to the fluid introduction part 21. A swirl flow is formed along the inner wall of the carrier fluid introduction portion by the air 24 sucked or press-fitted from the air introduction device 26.
- the abrasive 5 that is pressed together with the carrier fluid 20 from the horizontal direction is mixed with the carrier fluid in the abrasive / fluid mixing unit 4 and then pressed into the carrier fluid introducing unit 21 from the horizontal direction.
- the blast pipe (steel pipe) 6 Since the fluctuation of the pressure of the carrier fluid is small from the start end to the end of the blast pipe (steel pipe) 6, the blast pipe (steel pipe) 6 is used to blast the inner surface of the steel pipe. The necessary flow rate is sufficiently secured.
- the abrasive material stored in the abrasive material tank 3 is dropped into the high-pressure air stream 20 supplied from the compressor (not shown), and the abrasive material is then applied to the high-pressure air.
- Abrasive and fluid mixing part 4 to be mixed passes through a cylindrical carrier fluid introduction part 21 and a dummy pipe 23.
- the blast pipe (steel pipe) 6 is provided on the start end side.
- the structure of the abrasive material 'fluid mixing section 4 is the same as that shown in Fig.
- the high-pressure air flow 20 supplied through the nozzle 16 and the abrasive material 5 supplied through the feeder 17 are Then, they are mixed in the differential user 18 and conveyed to the carrier fluid introduction part 21. Further, in this steel pipe inner surface blasting device, the force that the abrasive 5 is supplied to the carrier fluid introducing portion 21 because of the whistle shape provided on the side surface of the cylindrical carrier fluid introducing portion 21. Above the apparatus 26, a polishing material tank 3 capable of storing the polishing material 5 is installed.
- the blast material that has finished the inner surface of the blast pipe 6 and the negative pressure air flow that carries the blast material in a suspended state are provided.
- a recovery tank 7 is installed to separate the abrasive and air that has not yet been crushed and removed, and the unloading means 14 for carrying out the abrasive separated in the recovery tank 7 The abrasive is returned to the abrasive tank 3).
- the recovery tank 7 includes a cyclone 8 and a dust collector 9 for separating the crushed scouring material and the scouring waste and the negative pressure air flow, and the scouring material after the scouring and the scouring material.
- the negative pressure air stream that is transported in a suspended state is sucked from the blasted pipe 6 through the recovery tank 7, the cyclone 8, and the dust collector 9, and the air from which the abrasive is removed is cleaned.
- the blower 10 to send and discharge to the silencer 11 is connected!
- FIG. 12 shows an enlarged view (perspective view) of a cylindrical carrier fluid introduction portion in the steel pipe inner surface blasting apparatus according to the fourth embodiment.
- the cylindrical carrier fluid introduction part 21 has a hole 19 for pressing the abrasive 5 together with the carrier fluid 20 into the carrier fluid introduction part 21 in the horizontal direction. At the center of the end face.
- the cylindrical carrier fluid introduction part 21 has a whistle-shaped air introduction device 26 for introducing the air 24 together with the abrasive 5 into the carrier fluid introduction part 21.
- a swirling flow synthesized from the circumferential velocity V and the radial velocity V is formed along the inner wall of the carrier fluid introduction portion by the air 24 sucked or press-fitted from the air introduction device 26.
- the carrier fluid introduction part 21 is an axial tube coaxial with the cylinder of the carrier fluid introduction part.
- the carrier fluid 20 that conveys the abrasive that has been pressed horizontally into the shaft tube from the hole 19 provided in the end surface of the cylindrical carrier fluid introduction portion 21 is press-fitted at a longitudinal speed V, z It passes through the shaft tube at a longitudinal speed V. Furthermore, it is provided in the carrier fluid introduction part 21 z
- the air 24 introduced from the whistle-shaped air introducing device 26 conveys the abrasive 5 supplied from the whistle-shaped air introducing device 26 and introduces a cylindrical carrier fluid around the outer periphery of the shaft tube 22. Forms a swirl flow with swirl velocity V swirling along the inner wall
- V (V 2 + V 2 + V 2 ) 1/2 (2)
- the length of the shaft tube 22 is set to be the same as the length of the cylindrical carrier fluid introducing portion 21, but the pressure can be adjusted by adjusting the length of the shaft tube 22 and the speed of the carrier fluid 20.
- the carrier fluid 20 that transports the scoured abrasive material can be made to collide with the steel pipe starting end at a predetermined angle, so that the abrasive fluid conveyed by the carrier fluid 20 collides with the inner surface of the steel pipe starting end. It is better to set the length of the tube shaft 22 to be adjusted to start.
- the dummy pipe 23 is installed between the steel pipe starting end part installed horizontally and the cylindrical carrier fluid introduction part 21.
- the inner surface including a part of the dummy tube 23 can be blasted, so that the abrasive can be reliably blasted from the starting end of the inner surface of the steel tube.
- FIG. 13 An enlarged view (perspective view) of a cylindrical carrier fluid introducing portion in the negative pressure suction blast device shown in FIG. 3 (shown in FIG. 1 in Patent Document 1). This is shown in Fig. 13.
- the cylindrical carrier fluid introduction part 21 has a whistle-shaped air introduction device 26 for introducing the air 24 together with the abrasive 5 into the carrier fluid introduction part 21.
- the air 24 sucked or press-fitted from the air introduction device 26 is moved along the inner wall of the carrier fluid introduction portion.
- a swirling flow with a circumferential velocity V is formed.
- the velocity of the swirling flow is combined with the longitudinal velocity V and the circumferential velocity V force.
- V (V 2 + V 2 ) 1/2 Equation (3)
- FIG. 14 shows an experimental apparatus for grasping the behavior of the abrasive in the blasted pipe (steel pipe) when the steel pipe inner surface blasting apparatus according to the third embodiment is used.
- a transparent tube made of polycarbonate is used as the material for the pipe inner surface blasting device, and the silica sand flowing in this polycarbonate transparent tube is photographed at several locations in the longitudinal direction of the blast tube with a high-speed camera, and the silica sand at each location is taken. The speed and its direction were analyzed.
- the carrier fluid introduction part 21 was press-fitted through the shaft tube 22. Separately, air 24 is sucked or pressed into the carrier fluid introduction part 21 from the whistle-shaped air introduction device 26 provided in the carrier fluid introduction part 21 at a negative pressure of the air flow rate Q.
- Fig. 15 is an experimental apparatus for comparison, and using this experimental apparatus, the behavior of the abrasive in the blast pipe (steel pipe) in the negative pressure suction blast apparatus was grasped.
- a polycarbonate transparent tube is used as the material for the tube inner surface blasting device, and this polycarbonate transparent
- the silica sand flowing in the pipe was photographed at several locations along the length of the blast tube with a high-speed camera, and the speed and direction of the silica sand at each location were analyzed.
- the silica sand as the abrasive 5 from the abrasive tank 3 is supplied to the whistle-shaped air introducing device 26 provided in the carrier fluid introducing portion 21 and the whistle provided in the carrier fluid introducing portion 21.
- a swirling flow was formed along the inner wall of the carrier fluid introducing portion 21 by sucking air 24 into the carrier fluid introducing portion 21 from the shaped air introducing device 26 with a negative pressure of the air flow rate Q.
- the experimental conditions are as shown in Table 1 (Comparative Examples 1 and 2).
- Figs. 16 to 19 show various moving speeds (synthesis speed V, longitudinal speed V, circumferential speed V) of the silica sand as the abrasive and the incident angle ⁇ of the silica sand.
- the synthesis speed V is not different at the start end of the blast tube, but the invention examples 1 and 2 after the middle of the blast tube. Is higher than Comparative Examples 1 and 2 ( Figure 16).
- the longitudinal velocity V is higher in Comparative Examples 1 and 2 than in Comparative Examples 1 and 2 in the invention examples 1 and 2 from the start end to the end of the blast tube (FIG. 17).
- Comparative Examples 1 and 2 are significantly higher than Invention Examples 1 and 2 at the start end, and Comparative Examples 1 and 2 are also higher at the end of the blast tube (FIG. 18).
- the swivel angle ⁇ is too large as in Comparative Examples 1 and 2, there is a possibility that a striped pattern may be generated on the inner surface of the blasted tube, and the start end of the blasted tube as in Comparative Examples 1 and 2. If there is too much difference in the swivel angle ⁇ between the head and end, the blasting effect on the inner surface of the blasted pipe differs in the longitudinal direction. Occurs.
- the incident angle ⁇ of the scouring material is significantly higher in Comparative Examples 1 and 2 than Invention Examples 1 and 2 at the start end of the blasted tube, and in Comparative Example 1 and 2 at the end of the blasted tube. 2 is higher ( Figure 19).
- the incident angle ⁇ of the abrasive is too large as in Comparative Examples 1 and 2, the blasting effect on the inner surface of the blasted tube may not be obtained.
- the incident angle ⁇ of the blast material is too different between the start end and the end of the blast tube, there is a problem that the blast effect on the inner surface of the blast tube differs in the longitudinal direction.
- Examples 1 and 2 of the present invention are in the optimum angle range where the incident angle ⁇ of the abrasive is 10 to 30 °.
- Figure 20 shows Kenji Hashimoto's “Countermeasures against wear in powder air transportation” p.56, NTS,
- Carrier fluid press-fit flow rate suction arch I 3% of flow rate
- Inner diameter of shaft tube about 1/4 of inner diameter of carrier fluid inlet 21
- Powder input position Longitudinal position same as end point of air inlet
- Powder input position Drop input from air suction device 26
- Table 2 shows the experimental results of Example 6 and Comparative Example 3. This is a visual observation of the state of the inner surface of the terminal end when the polishing is completed at a predetermined time. ⁇ indicates that descaling is completed, and X indicates that descaling is not completed. Indicates.
- Example 6 using the steel pipe inner surface blasting device according to the present invention, the descaling could be completed even if the operation time was reduced by 10%, whereas the comparison using the negative pressure suction blasting device was performed. In Example 3, descaling could not be completed if the operating time was reduced by 10%. That is, the steel pipe inner surface blasting apparatus according to the present invention was higher than the negative pressure suction blasting apparatus and had a scouring ability.
- the present invention it is possible to provide a steel pipe inner surface blasting apparatus and a steel pipe inner surface blasting method capable of sufficiently blasting the inner surface of the steel pipe from the start end to the end of the steel pipe and improving the blasting capability. Providing a manufacturing method for steel pipes with excellent surface properties on the inner surface.
- FIG. 1 Brief Description of Drawings 1 is a high-pressure injection blasting device shown in FIG.
- FIG. 2 is a schematic diagram when the abrasive 5 conveyed using the high-pressure air flow 20 as a carrier collides with the inner surface of the steel pipe with an incident angle ⁇ .
- FIG. 3 shows a negative pressure suction blast device shown in FIG.
- FIG. 4 is a schematic view when the abrasive 5 conveyed with the negative pressure air flow 15 as a carrier collides with the steel pipe inner surface 6 with an incident angle ⁇ .
- FIG. 5 is an example of a steel pipe inner surface blasting apparatus according to the present invention, and shows an overall view of the steel pipe inner surface blasting apparatus.
- FIG. 6 shows an enlarged view (perspective view) of a cylindrical carrier fluid introduction part in the steel pipe inner surface blasting apparatus shown in FIG.
- FIG. 7 shows another example of the steel pipe inner surface blasting apparatus according to the present invention, showing an overall view of the steel pipe inner surface blasting apparatus.
- FIG. 8 shows an enlarged view (perspective view) of a cylindrical carrier fluid introduction part in the steel pipe inner surface blasting apparatus shown in FIG.
- FIG. 9 is another example of the steel pipe inner surface blasting apparatus according to the present invention, and shows an overall view of the steel pipe inner surface blasting apparatus.
- FIG. 10 An enlarged view (perspective view) of a cylindrical carrier fluid introducing portion of the steel pipe inner surface blasting apparatus shown in FIG. 9 is shown.
- FIG. 11 is another example of the steel pipe inner surface blasting apparatus according to the present invention, and shows an overall view of the steel pipe inner surface blasting apparatus.
- FIG. 12 An enlarged view (perspective view) of a cylindrical carrier fluid introducing portion of the steel pipe inner surface blasting device shown in Fig. 11 is shown.
- FIG. 13 An enlarged view (perspective view) of the cylindrical carrier fluid introduction part of the negative pressure suction blasting device shown in FIG. 3 is shown for comparison.
- FIG. 14 An experimental apparatus for grasping the behavior of the abrasive in the blast pipe (steel pipe) when the steel pipe inner surface blasting apparatus shown in FIGS. 9 and 10 is used.
- FIG. 15 shows an experimental device for grasping the behavior of the abrasive in the blast pipe (steel pipe) in the negative pressure suction blasting device shown in FIG. [Fig.16]
- the moving speed (synthesis speed V) of silica sand as the abrasive is shown.
- Sono] Shows the moving speed (longitudinal speed V) of silica sand as a polishing material.
- FIG.19 Shows the incident angle ⁇ of silica sand as a polishing material.
- FIG. 20 An example showing the relationship between the collision angle between metal powder and metal surface and the amount of wear.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07791429.9A EP2058086B1 (en) | 2006-09-01 | 2007-07-27 | Steel pipe internal-surface blasting apparatus, method of blasting steel pipe internal-surface and process for manufacturing steel pipe excelling in internal-surface surface property |
CN2007800322041A CN101511540B (zh) | 2006-09-01 | 2007-07-27 | 钢管内表面喷砂装置、钢管内表面喷砂方法和内表面的表面特性优异的钢管的制造方法 |
BRPI0719902A BRPI0719902B1 (pt) | 2006-09-01 | 2007-07-27 | dispositivo de jateamento a alta pressão para brunir as superfícies internas de tubos de aço. método de jateamento para superfícies internas de tubos de aço e método para produzir tubos de aço com texturas de alta qualidade nas superfícies internas. |
US12/379,725 US8016642B2 (en) | 2006-09-01 | 2009-02-27 | Blasting device for steel pipe inner surface, blasting method for steel pipe inner surface, and method for producing steel pipe with excellent inner surface texture |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-237467 | 2006-09-01 | ||
JP2006237467A JP5217132B2 (ja) | 2006-09-01 | 2006-09-01 | 鋼管内面ブラスト装置、鋼管内面ブラスト方法及び内面の表面性状に優れた鋼管の製造方法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/379,725 Continuation US8016642B2 (en) | 2006-09-01 | 2009-02-27 | Blasting device for steel pipe inner surface, blasting method for steel pipe inner surface, and method for producing steel pipe with excellent inner surface texture |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008026404A1 true WO2008026404A1 (fr) | 2008-03-06 |
Family
ID=39135690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/064735 WO2008026404A1 (fr) | 2006-09-01 | 2007-07-27 | Appareil de décapage de la surface interne de tubes en acier, procédé de décapage de la surface interne de tubes en acier et procédé de fabrication d'un tube en acier dont la surface interne présente d'excellentes propriétés de surface |
Country Status (6)
Country | Link |
---|---|
US (1) | US8016642B2 (ja) |
EP (1) | EP2058086B1 (ja) |
JP (1) | JP5217132B2 (ja) |
CN (1) | CN101511540B (ja) |
BR (1) | BRPI0719902B1 (ja) |
WO (1) | WO2008026404A1 (ja) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8613641B2 (en) * | 2008-10-22 | 2013-12-24 | Pratt & Whitney Canada Corp. | Channel inlet edge deburring for gas diffuser cases |
JP5631184B2 (ja) * | 2010-12-03 | 2014-11-26 | 日本発條株式会社 | 中空ばねおよびその製造方法 |
JP5523375B2 (ja) * | 2011-03-01 | 2014-06-18 | 新日鐵住金株式会社 | 溶融金属めっき浴中ロール及び溶融金属めっき浴中ロールの製造方法 |
JP5929323B2 (ja) * | 2012-03-01 | 2016-06-01 | Jfeスチール株式会社 | 管内面の負圧吸引ブラスト方法及び装置 |
CN103586781B (zh) * | 2012-08-13 | 2016-10-05 | 中国石油集团工程技术研究院 | 一种自动喷砂除锈装置 |
CN104415950A (zh) * | 2013-08-27 | 2015-03-18 | 常州苏丞不锈钢有限公司 | 一种高压管线及其制造方法 |
US9987725B1 (en) * | 2014-04-22 | 2018-06-05 | Ormond, Llc | Method for machining an inner diameter of bored structures using an abrasive jet |
CN105313017A (zh) * | 2015-11-12 | 2016-02-10 | 杨华杰 | 一种钢管内外壁抛丸处理机系统及处理方法 |
CN105458900B (zh) * | 2015-12-28 | 2017-10-27 | 广州大学 | 一种管状工件内表面的抛光装置 |
US10646977B2 (en) * | 2016-06-17 | 2020-05-12 | United Technologies Corporation | Abrasive flow machining method |
JP7007087B2 (ja) * | 2016-12-06 | 2022-01-24 | 三共理化学株式会社 | 管内面のブラスト方法及び装置 |
CN106670985B (zh) * | 2017-02-24 | 2019-09-27 | 重庆映秀科技有限公司 | 喷砂回收装置及喷砂装置 |
CN106863147A (zh) * | 2017-03-16 | 2017-06-20 | 浙江久立特材科技股份有限公司 | 一种风动丸粒传输装置 |
WO2019003397A1 (ja) * | 2017-06-28 | 2019-01-03 | 三菱製鋼株式会社 | 中空スタビライザーの製造方法 |
CN107244148B (zh) * | 2017-07-03 | 2022-12-09 | 郑州奥德利数控设备有限公司 | 旗帜打印烘干器及立式旗帜打印装置 |
CN107930942A (zh) * | 2017-11-23 | 2018-04-20 | 中山市君禾机电设备有限公司 | 一种用于管件内吸涂的粉房 |
CN109822463B (zh) * | 2019-04-22 | 2021-05-28 | 徐州新南湖科技有限公司 | 一种金属制品表面除锈研磨装置 |
CN110000644A (zh) * | 2019-04-28 | 2019-07-12 | 江苏大学 | 旋转式的细长孔内表面抛光设备 |
WO2021171625A1 (ja) * | 2020-02-28 | 2021-09-02 | 中国電力株式会社 | 脱硝触媒研磨装置 |
CN113927490B (zh) * | 2021-09-10 | 2023-12-26 | 太谷县恒瑞工贸有限公司 | 一种免回收式球墨铸铁管用内壁抛丸机 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4917502Y1 (ja) * | 1969-09-25 | 1974-05-07 | ||
JPS5249678B2 (ja) * | 1973-05-12 | 1977-12-19 | ||
JPS5616029B2 (ja) * | 1978-11-25 | 1981-04-14 | ||
JPS606354A (ja) * | 1983-06-22 | 1985-01-14 | Sumitomo Light Metal Ind Ltd | 伝熱管内面の付着物除去方法 |
JPS60263671A (ja) * | 1984-06-08 | 1985-12-27 | Masao Jibiki | パイプ内面のブラスト方法 |
JPH05228842A (ja) | 1992-02-21 | 1993-09-07 | Takashi Sato | 管内面の負圧吸引ブラスト方法とその装置 |
JPH0890418A (ja) * | 1994-09-22 | 1996-04-09 | Kawasaki Steel Corp | パイプ内面ブラスト装置 |
JPH1158241A (ja) * | 1997-08-21 | 1999-03-02 | Mitsubishi Heavy Ind Ltd | 管内面処理装置及び管内面処理方法 |
JPH11236651A (ja) * | 1998-02-23 | 1999-08-31 | Sumitomo Metal Ind Ltd | 耐候性に優れたマルテンサイト系ステンレス鋼管およびその製造方法 |
WO2004053372A2 (en) | 2002-12-09 | 2004-06-24 | Joerg Kruse | Pipe renovating system and method |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5126166B2 (ja) * | 1972-06-13 | 1976-08-05 | ||
JPS5249678A (en) | 1975-06-24 | 1977-04-20 | Koizumi Sangyo Kk | Circuit for igniting a discharge lamp |
JPS55142574A (en) * | 1979-04-23 | 1980-11-07 | Chiyuunichi Kuriinaa Kogyo Kk | Method of descaling wall surface of inside of pipe |
JPS5616029A (en) * | 1979-07-20 | 1981-02-16 | Matsushita Electric Ind Co Ltd | Combusting apparatus of petroleum |
JPS583686A (ja) * | 1981-06-30 | 1983-01-10 | 藤井 金蔵 | パイプ内面の研掃方法及その装置 |
JPS6299079A (ja) * | 1985-10-23 | 1987-05-08 | Eikichi Yamaharu | ブラスト方法およびこれに用いるブラスト装置 |
CN1006868B (zh) * | 1987-11-21 | 1990-02-21 | 宝鸡有色金属加工厂 | 管材内表面喷砂处理设备 |
EP0490117A1 (de) * | 1990-12-13 | 1992-06-17 | Bühler Ag | Verfahren zum Reinigen einer Rohrleitung |
US5239786A (en) * | 1992-04-22 | 1993-08-31 | Pangborn Corporation | Inside pipe cleaner |
JPH10287924A (ja) * | 1997-04-16 | 1998-10-27 | Sumitomo Metal Ind Ltd | マルテンサイト単相のステンレス鋼管の製造方法 |
JP3533942B2 (ja) | 1998-05-08 | 2004-06-07 | 住友金属工業株式会社 | スケール除去方法及び設備 |
JP2002166368A (ja) * | 2000-11-29 | 2002-06-11 | Sumitomo Metal Ind Ltd | 管内面研掃装置および管の製造方法 |
WO2003013790A1 (fr) * | 2001-08-08 | 2003-02-20 | Mitsubishi Heavy Industries, Ltd. | Dispositif et procede de suppression de corps etrangers |
JP4505307B2 (ja) * | 2004-11-01 | 2010-07-21 | 株式会社不二製作所 | 被加工物の研磨方法及び前記方法に使用するブラスト加工装置 |
-
2006
- 2006-09-01 JP JP2006237467A patent/JP5217132B2/ja active Active
-
2007
- 2007-07-27 CN CN2007800322041A patent/CN101511540B/zh active Active
- 2007-07-27 WO PCT/JP2007/064735 patent/WO2008026404A1/ja active Application Filing
- 2007-07-27 EP EP07791429.9A patent/EP2058086B1/en active Active
- 2007-07-27 BR BRPI0719902A patent/BRPI0719902B1/pt active IP Right Grant
-
2009
- 2009-02-27 US US12/379,725 patent/US8016642B2/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4917502Y1 (ja) * | 1969-09-25 | 1974-05-07 | ||
JPS5249678B2 (ja) * | 1973-05-12 | 1977-12-19 | ||
JPS5616029B2 (ja) * | 1978-11-25 | 1981-04-14 | ||
JPS606354A (ja) * | 1983-06-22 | 1985-01-14 | Sumitomo Light Metal Ind Ltd | 伝熱管内面の付着物除去方法 |
JPS60263671A (ja) * | 1984-06-08 | 1985-12-27 | Masao Jibiki | パイプ内面のブラスト方法 |
JPH05228842A (ja) | 1992-02-21 | 1993-09-07 | Takashi Sato | 管内面の負圧吸引ブラスト方法とその装置 |
JPH0890418A (ja) * | 1994-09-22 | 1996-04-09 | Kawasaki Steel Corp | パイプ内面ブラスト装置 |
JPH1158241A (ja) * | 1997-08-21 | 1999-03-02 | Mitsubishi Heavy Ind Ltd | 管内面処理装置及び管内面処理方法 |
JPH11236651A (ja) * | 1998-02-23 | 1999-08-31 | Sumitomo Metal Ind Ltd | 耐候性に優れたマルテンサイト系ステンレス鋼管およびその製造方法 |
WO2004053372A2 (en) | 2002-12-09 | 2004-06-24 | Joerg Kruse | Pipe renovating system and method |
Non-Patent Citations (1)
Title |
---|
See also references of EP2058086A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP2058086A1 (en) | 2009-05-13 |
CN101511540B (zh) | 2011-10-19 |
CN101511540A (zh) | 2009-08-19 |
EP2058086A4 (en) | 2012-08-22 |
BRPI0719902A2 (pt) | 2014-09-16 |
US20090233531A1 (en) | 2009-09-17 |
BRPI0719902B1 (pt) | 2020-04-07 |
US8016642B2 (en) | 2011-09-13 |
JP2008055572A (ja) | 2008-03-13 |
JP5217132B2 (ja) | 2013-06-19 |
EP2058086B1 (en) | 2014-07-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5217132B2 (ja) | 鋼管内面ブラスト装置、鋼管内面ブラスト方法及び内面の表面性状に優れた鋼管の製造方法 | |
WO2015059941A1 (ja) | ブラスト加工方法及びブラスト加工装置 | |
CN101065505A (zh) | 由粉化炉渣制成的磨料、该磨料的生产设备和方法 | |
CN202922415U (zh) | 一种浆体射流湿法抛砂装置 | |
JP2010046770A (ja) | 複層噴流式ノズル装置 | |
CN107787256A (zh) | 用于清洗喷气式发动机的方法和设备 | |
US5168671A (en) | Dressing method and apparatus for super abrasive grinding wheel | |
JP5910933B2 (ja) | 湿式ブラスト加工用ノズルおよびそのノズルを備えたブラスト加工装置 | |
WO2009119540A1 (ja) | スケール除去方法およびスケール除去装置 | |
JP2942168B2 (ja) | ブラスト加工における加工パターンの拡大方法及び装置 | |
JP4619850B2 (ja) | ウォータジェット装置および研磨液の噴出方法 | |
JP5929323B2 (ja) | 管内面の負圧吸引ブラスト方法及び装置 | |
JPH09323263A (ja) | ブラスト装置 | |
JP2019081211A (ja) | 表面処理装置及び表面処理方法 | |
JP2013146852A (ja) | 乾式および湿式のブラスト加工を行うためのノズルおよびそのノズルを備えたブラスト加工装置 | |
JP2004154894A (ja) | サンドブラスト加工における研磨材供給方法および装置 | |
JP2002103230A (ja) | 表面研磨方法 | |
JP3783876B2 (ja) | 負圧吸引ブラスト装置並びにその方法 | |
JP3150552U (ja) | ハイブリッド型ショットブラスト装置 | |
JP2002166368A (ja) | 管内面研掃装置および管の製造方法 | |
JP2003225865A (ja) | ブラスト装置 | |
JP2002177809A (ja) | 噴流衝合装置 | |
JP2004188370A (ja) | 衝突式気流粉砕機、衝突部材及び衝突部材の再生方法 | |
JP2002018718A (ja) | 鋼管内面のスケール除去装置 | |
KR200147641Y1 (ko) | 공기흡입식 로터에 의한 분급기 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200780032204.1 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07791429 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007791429 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: PI0719902 Country of ref document: BR Kind code of ref document: A2 Effective date: 20090227 |