CN108406608B - Method for removing heat treatment oxide layer of steel by mixed water jet and special equipment thereof - Google Patents
Method for removing heat treatment oxide layer of steel by mixed water jet and special equipment thereof Download PDFInfo
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- CN108406608B CN108406608B CN201810250489.6A CN201810250489A CN108406608B CN 108406608 B CN108406608 B CN 108406608B CN 201810250489 A CN201810250489 A CN 201810250489A CN 108406608 B CN108406608 B CN 108406608B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 90
- 239000010959 steel Substances 0.000 title claims abstract description 90
- 238000010438 heat treatment Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 96
- 239000004576 sand Substances 0.000 claims abstract description 41
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 60
- 238000004064 recycling Methods 0.000 claims description 35
- 238000009434 installation Methods 0.000 claims description 26
- 238000003823 mortar mixing Methods 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 21
- 238000011084 recovery Methods 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims 2
- 238000007254 oxidation reaction Methods 0.000 claims 2
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000002253 acid Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005238 degreasing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003929 acidic solution Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
-
- 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
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
- B24C9/006—Treatment of used abrasive material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of removing an oxide layer on the surface of steel, in particular to a method for removing a heat treatment oxide layer of steel and special equipment thereof; the invention aims to provide a method for removing a heat treatment oxide layer of steel by mixed water jet and special equipment thereof, wherein the mixed water jet is used for physically removing the heat treatment oxide layer on the surface of the steel; firstly, uniformly stirring water and sand to prepare mortar, wherein the volume ratio of the sand to the water is 15-20%; the method for removing the oxide layer of the steel material by the mixed water jet type heat treatment and the special equipment thereof change the original mode of chemically removing the oxide layer, and remove the oxide layer on the surface of the steel material by adopting a pure physical removing mode, so that the original performance of the steel material is not damaged, the environment is not polluted, and the used sand and water can be recycled, so that the problem of raw material waste is not caused, and the cost is greatly reduced.
Description
Technical Field
The invention relates to the technical field of removing an oxide layer on the surface of steel, in particular to a method for removing a heat treatment oxide layer of steel and special equipment thereof.
Background
In order to remove the oxide layer on the surface of the steel, many enterprises soak the steel in an acidic solution to remove the oxide layer on the surface of the steel, for example, patent No. 201610164946.0, which is a method for preventing and removing the oxide color or the oxide skin of a brass piece by heat treatment, the whole processing process flow comprises the steps of blanking, forming, degreasing by trichloroethylene, degreasing by an organic solvent, degreasing by alkali, washing by deionized water, corrosion, passivation, flowing cold water, stabilizing treatment, drying, stress-removing heat treatment, passivation film removal and the like, but the method for removing the oxide layer by the chemistry has the following defects: firstly, because the acid solution is not controlled manually, proper acid solvent is required to be selected according to the requirement, and if the selected acid solution is improper, the original performances of the steel can be damaged; secondly, when the acid solution is adopted, workers need to wear special gloves, protective clothing and safety helmets, and certain damage can be caused to the workers; thirdly, the used acid solution is generally treated by workers at will, and the treatment mode can cause certain pollution to the environmental soil; fourth, since the treatment of the oxide layer on the surface of the steel material is required according to the order, the acidic solution cannot be stored for a long time after one use and then is reused when the next batch of steel material is required to be treated, and thus there are disadvantages of serious waste and high cost.
Aiming at the problems, the solution is urgently needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for removing a heat treatment oxide layer of steel by mixed water jet and special equipment thereof.
In order to achieve the above purpose, the method for removing the heat treatment oxide layer of the steel by using the mixed water jet method comprises the following steps:
firstly, uniformly stirring water and sand to prepare mortar, wherein the volume ratio of the sand to the water is 15-20%; the important point is that uniform mortar is a foundation for ensuring the subsequent stable work, and the processing of the sand and water is unfavorable due to the fact that the proportion of the sand to the water is too large or too small, so that the oxide layer on the surface of the steel to be processed can not be removed completely;
secondly, the mortar is conveyed into a mortar proportion regulator for proportion regulation under the action of a conveying pump, so that the weight ratio of sand to water reaches 7-8:2-3, and the optimal weight ratio is 7.5:2.5, in order to separate out most of the low-pressure water which does not play a role in the work of spraying and removing the oxide layer, in theory, sand grains with high-speed kinetic energy are obtained to strike and grind the oxide layer on the surface of the steel, then the proportioned mortar is uniformly distributed and conveyed into a plurality of spray guns through a uniform distributor, and the mortar is provided with spraying power under the action of the high-pressure water, so that the mortar is sprayed outwards at high speed, the steel to be processed and the spray guns are in relative motion, the mortar can be uniformly sprayed on the surface of the steel to be processed, the oxide layer on the surface of the steel to be processed is removed completely, the arrangement form among the spray guns is set according to the appearance of the steel to be processed, for example, the arrangement form among the spray guns is set in a concentric circle, the spray guns are set in a straight line form among the spray guns is set in a small-caliber round hollow tubular steel, and the spray guns are set in a spiral form among the spray guns.
In order to prevent sand from adhering to the surface of the steel to be processed after the steel is sprayed by the spray gun, a third step of flushing the surface of the steel by water through a cleaning mechanism can be provided, and the water can be excessive low-pressure water separated by a mortar proportion regulator in the second step.
In order to reduce the production cost, the mortar and the high-pressure water sprayed by the spray gun in the second step can be recovered and recycled.
In order to achieve the aim, the mixed water jet type equipment for removing the heat treatment oxide layer of the steel comprises a controller, a feeding mechanism, a discharging mechanism, a mortar mixing mechanism, a plurality of spray guns, a water storage tank, a high-pressure water pump, a mortar proportion regulator, a uniform distributor, a three-dimensional structural installation cover and a mortar recycling integrated cabinet; the mortar recycling integrated cabinet is of a hollow box body structure with an unsealed end face at the upper end, and a discharging interface is arranged at the bottom of the mortar recycling integrated cabinet and is connected with the mortar mixing mechanism into a whole through a connecting pipe, so that the mortar can be recycled and conveyed into the mortar mixing mechanism; a mounting cover with a three-dimensional structure is arranged above the mortar recycling integrated cabinet, one end of the mounting cover is provided with a feed inlet, the other end of the mounting cover is provided with a discharge outlet, the center line of the feed inlet and the center line of the discharge outlet coincide, a mortar discharge outlet is arranged on the mounting cover, and the mortar discharge outlet is opposite to the mortar recycling integrated cabinet; a feeding mechanism is arranged at one end close to the feeding hole of the mounting cover, a discharging mechanism is arranged at one end close to the discharging hole of the mounting cover, a plurality of spray guns are respectively arranged on the inner wall of the mounting cover, and the spraying hole of each spray gun is aligned to the surface of the steel to be processed, so that mortar sprayed in each spray gun can be sprayed to the surface of the steel to be processed; the mortar mixing mechanism is connected with the mortar proportion regulator through a conveying pipe, and a conveying pump is arranged on the conveying pipe; the mortar proportion regulator is connected with the uniform distributor through a connecting pipe, the uniform distributor is connected with the spray guns one by one through a plurality of conveying pipes, and the mortar proportion regulator is also connected with the mortar mixing mechanism through a sand recycling pipe and a water recycling pipe respectively, so that when the mortar proportion regulator is used for proportioning sand and water, the excessive water or sand in the mortar proportion regulator is recycled and conveyed into the mortar mixing mechanism; the water storage tank is connected with the spray gun through a conveying pipe, and a high-pressure water pump is further arranged on the conveying pipe, so that water conveyed into the spray gun is changed into high-pressure water with pressure; the controller is connected with the feeding mechanism, the discharging mechanism, the mortar mixing mechanism, the spray gun, the delivery pump, the high-pressure water pump, the mortar proportion regulator and the uniform distributor through connecting wires respectively, so that the feeding mechanism, the discharging mechanism, the mortar mixing mechanism, the spray gun, the delivery pump, the high-pressure water pump, the mortar proportion regulator and the uniform distributor are controlled to work respectively.
In order to ensure that the mortar recovery box keeps better stability in the working process, the mortar recovery box can further comprise a frame, and the mortar recovery integrated cabinet is fixed on the frame.
In order to make the protection effect of the installation cover better, the installation cover is of a hollow and sealed cylinder structure, and the discharge end of the installation cover is of a hollow conical structure; or the discharge end and the feed end of the installation cover are of hollow conical structures, the circle center of the discharge end and the circle center of the feed end are on the same horizontal plane, and a water curtain is further arranged at the feed inlet of the installation cover, so that the cost of high-energy sand grains is reduced, and the water of the water curtain can be low-pressure water separated by a mortar proportion regulator.
The mixed water jet type steel heat treatment oxide layer removing equipment designed by the invention can remove the oxide layers on the surfaces of large-caliber steel, small-caliber steel and plate steel, and has the functions of stability, high efficiency, energy conservation and water conservation in the processing process in order to ensure that the oxide layers can be removed cleanly; the effect of removing the oxide layer on the surface of the large-caliber steel is optimal, and a plurality of spray guns are arranged on the inner wall of the mounting cover in a concentric circle arrangement mode; in order to achieve the best effect of removing the surface oxide layer of the small-caliber steel, the production and the installation of every two adjacent spray guns are convenient, and a plurality of spray guns are arranged on the inner wall of the installation cover in a spiral arrangement mode; in order to achieve the best effect of removing the oxide layer on the surface of the plate steel, at least two spray guns are arranged on the inner wall of the installation cover, the two spray guns are oppositely arranged, the central line of each spray gun is intersected with the central line of the installation cover, and an included angle is formed, and the included angle is 40-60 degrees.
In order to ensure that the large-caliber round tube-shaped steel and the small-caliber round tube-shaped steel cannot displace under the action of the impact force of the spray gun after entering the installation cover, the automatic feeding device further comprises a guide assembly, wherein the installation cover is close to one end of the feeding mechanism and is provided with the guide assembly along the axial direction of the installation cover, the guide assembly is a guide tube with a hollow structure, and the center line of the guide tube is overlapped with the center line of the installation cover; or the guide component is a guide wheel, and the central line of the guide groove on the guide wheel coincides with the central line of the mounting cover.
In order to recycle sand, water and oxide layers in the mortar recycling bin respectively, the mortar recycling bin further comprises a dry or wet electromagnetic separator and an oxide layer recycling bin, wherein an electromagnetic separator is connected to a discharge interface of the mortar recycling bin and connected with a mortar mixing mechanism through a first recycling pipe, the electromagnetic separator is connected with a water storage tank through a second recycling pipe, the electromagnetic separator is connected with the oxide layer recycling bin through a third recycling pipe, and the electromagnetic separator is connected with a controller through a connecting wire, so that sand, water and the removed oxide layers which are integrated into a whole in the mortar recycling bin can be separated under the action of the electromagnetic separator, and recycling is performed through corresponding recycling pipes.
In order to accurately convey the steel to be processed into the mounting cover through the feeding mechanism, displacement cannot occur; the feeding mechanism consists of a base, a first motor, a plurality of rotating shafts, conveying wheels and a stable pressing wheel, wherein the rotating shafts are arranged on the upper surface of the base in the length direction at the same interval, every two adjacent rotating shafts are connected into a whole through a chain wheel, the first motor is connected with one rotating shaft so as to drive the rotating shafts to rotate, the outer wall of each rotating shaft is sleeved with the conveying wheel, the outer circumferential surface of the conveying wheel is provided with a groove for placing steel, and the central line of the groove coincides with the central line of a feeding hole in the mounting cover; a stable pressing wheel is arranged right above one or more conveying wheels, a gap is reserved between the stable pressing wheel and the conveying wheels, and the gap is enough for steel to be processed to pass through and be conveyed into the installation cover; the gap between the stable pressing wheel and the conveying wheel can be regulated according to the size of the steel to be processed, so that the actual production requirement is met.
The structure of the discharging mechanism is the same as that of the feeding mechanism, and in order to ensure that the feeding mechanism and the guide wheel in the discharging mechanism can not scratch or damage the surface of steel when contacting the surface of the steel, the guide wheel is made of rubber materials.
The mortar mixing mechanism comprises an outer cylinder, an inner cylinder, a second motor and a stirring assembly, wherein the outer cylinder is of a hollow cylinder structure with an unsealed end face at the upper end, the inner cylinder is arranged in the outer cylinder, the length of the inner cylinder is one half of that of the outer cylinder, the upper end of the inner cylinder is of a fully-closed structure, the lower end of the inner cylinder is of an unsealed structure, a gap is reserved between the bottom of the inner cylinder and the bottom of the outer cylinder, so that a sand flow chamber is formed at the gap between the inner wall of the outer cylinder and the outer wall of the inner cylinder, and the inner cylinder is a mixing stirring chamber; the stirring assembly is arranged inside the inner cylinder, the second motor is connected with the stirring assembly, the second motor is connected with the controller through a connecting wire, a sand outlet is formed in the upper end of the inner cylinder, and the sand outlet on the inner cylinder is connected with the mortar proportion adjuster into a whole through the connecting pipe.
In order to make the steel to be processed can not glue the sand through the spray gun after the injection treatment, can also include wiper mechanism, wiper mechanism sets up the top at the upper discharge gate of installing cover, and wiper mechanism is a wash pipe and is connected with the storage water tank, is equipped with the valve on the wash pipe to wash the surface of steel through the water in the storage water tank, and because wiper mechanism sets up the top at installing cover discharge gate one end, that is set up in the top of the integrative cabinet of mortar recovery, thereby wash the water of steel and still can flow into the integrative cabinet of mortar recovery automatically and retrieve, and cyclic utilization.
The working principle of the mixed water jet type steel heat treatment oxide layer removing device is as follows: firstly, uniformly mixing sand and water into mortar through a mortar mixing mechanism; secondly, placing steel materials needing surface oxide layer removal on a feeding mechanism, conveying the steel materials to a mounting cover under the action of the feeding mechanism, conveying mortar in a mortar mixing mechanism to a mortar proportion regulator, driving water in a water storage tank into the mortar proportion regulator through a high-pressure water pump, spraying the mortar obtained through the mortar proportion regulator towards the steel materials by a spray gun, thereby removing the oxide layer on the surface of the steel materials, and finally discharging from a discharging mechanism; thirdly, the mortar sprayed out of the spray gun falls into the mortar recovery integrated cabinet, the oxide layer removed from the surface of the steel also falls into the mortar recovery integrated cabinet, then sand, water and the oxide layer in the mortar recovery integrated cabinet are separated respectively under the action of the electromagnetic separator, and finally the separated sand is conveyed into a material placing cavity in the mortar mixing mechanism again, the separated water is conveyed into the water storage tank again, and the separated oxide layer is conveyed into the oxide layer recovery box, so that the oxide layer can be used for steel making.
According to the method for removing the heat treatment oxide layer of the steel by the mixed water jet and the special equipment thereof, which are designed by the invention, the original mode of chemically removing the oxide layer is changed, and the oxide layer on the surface of the steel is removed by adopting a pure physical removal mode, so that the original performance of the steel is not damaged, the environment is not polluted, the used sand and water can be recycled, the problem of raw material waste is not caused, and the cost is greatly reduced.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in embodiment 2;
FIG. 2 is a schematic diagram of a slurry mixing mechanism in embodiment 2;
FIG. 3 is a schematic view of the feeding mechanism in example 2.
Detailed Description
The implementation is as follows:
the invention relates to a method for removing a heat treatment oxide layer of steel by mixed water jet, which comprises the following steps:
firstly, uniformly stirring water and sand to prepare mortar, wherein the volume ratio of the sand to the water is 18%; the important point is that uniform mortar is a foundation for ensuring the subsequent stable work, and the processing of the sand and water is unfavorable due to the fact that the proportion of the sand to the water is too large or too small, so that the oxide layer on the surface of the steel to be processed can not be removed completely;
secondly, the mortar is conveyed into a mortar proportion regulator for proportion regulation under the action of a conveying pump, so that the weight ratio of sand to water reaches 7.5:2.5, in order to separate out most of the low-pressure water which does not play a role in the work of spraying and removing the oxide layer, in theory, sand grains with high-speed kinetic energy are obtained to strike and grind the oxide layer on the surface of the steel, then the proportioned mortar is uniformly distributed and conveyed into a plurality of spray guns through a uniform distributor, and the mortar is provided with spraying power under the action of the high-pressure water, so that the mortar is sprayed outwards at high speed, the steel to be processed and the spray guns are in relative motion, the mortar can be uniformly sprayed on the surface of the steel to be processed, the oxide layer on the surface of the steel to be processed is removed completely, the arrangement form among the spray guns is set according to the appearance of the steel to be processed, for example, the arrangement form among the spray guns is set in a concentric circle, the spray guns are set in a straight line form among the spray guns is set in a small-caliber round hollow tubular steel, and the spray guns are set in a spiral form among the spray guns.
In the third step, the surface of the steel is washed with water by a washing mechanism, and the water may be the excessive low-pressure water separated by the mortar ratio adjuster in the second step.
Example 2:
the invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the mixed water jet type steel heat treatment oxide layer removing device described in the embodiment comprises a frame 1, a controller 2, a feeding mechanism 3, a discharging mechanism 4, a mortar mixing mechanism 5, four spray guns 6, a water storage tank 7, a high-pressure water pump 8, a mortar proportion regulator 9, a three-dimensional mounting cover 10, a mortar recovery box integrated cabinet 11, a guide assembly 12, an electromagnetic separator 13, an oxide layer recovery box 14 and a uniform distributor 15; the machine frame 1 is provided with a mortar recovery box integrated cabinet 11, the mortar recovery box integrated cabinet 11 is of a hollow box body structure with an unsealed end face at the upper end, and the bottom of the mortar recovery box integrated cabinet 11 is provided with a discharge port and is connected with the mortar mixing mechanism 5 into a whole through a connecting pipe; a mounting cover 10 with a three-dimensional structure is arranged above the mortar recycling integrated cabinet 11, a feed inlet is arranged at one end of the mounting cover 10, a discharge outlet is arranged at the other end of the mounting cover 10, the feed inlet coincides with the center line of the discharge outlet, a mortar discharge outlet is arranged on the mounting cover 10, and the mortar discharge outlet is positioned right above the mortar recycling integrated cabinet 11; a feeding mechanism 3 is arranged at one end close to a feeding hole of the mounting cover 10, a discharging mechanism 4 is arranged at one end close to a discharging hole of the mounting cover 10, four spray guns 6 are arranged on the inner wall of the mounting cover 10 at one side close to the feeding mechanism 3 in a concentric circle distribution mode, and the spraying hole of each spray gun 6 is aligned to the surface of steel to be processed; a guide component 12 is arranged at one end of the installation cover 10, which is close to the feeding mechanism 3, along the axial direction of the installation cover 10, the guide component 12 is a guide pipe, the central line of the guide pipe is overlapped with the central line of the installation cover 10, and the guide pipe is connected with the inner wall of the installation cover 10 through a connecting rod; the mortar mixing mechanism 5 is connected with a mortar proportion regulator 9 through a conveying pipe, and a conveying pump is arranged on the conveying pipe; the mortar proportion regulator 9 is connected with the uniform distributor 15 through a connecting pipe, the uniform distributor 15 is connected with the four spray guns 6 one by one through four conveying pipes, and the mortar proportion regulator 9 is also connected with the mortar mixing mechanism 5 through a sand recycling pipe and a water recycling pipe respectively; the water storage tank 7 is connected with the spray gun 6 through a conveying pipe, and a high-pressure water pump 8 is further arranged on the conveying pipe; an electromagnetic separator 13 is connected to the discharge port of the mortar recycling integrated cabinet 11, the electromagnetic separator 13 is connected with the mortar mixing mechanism 5 through a first recycling pipe, the electromagnetic separator 13 is connected with the water storage tank 7 through a second recycling pipe, and the electromagnetic separator 13 is connected with an oxide layer recycling box 14 through a third recycling pipe; the feeding mechanism 3 and the discharging mechanism 4 have the same structure, the feeding mechanism 3 consists of a base 3-1, a first motor 3-2, five rotating shafts 3-3, a conveying wheel 3-4 and a stabilizing pinch roller 3-5, the five rotating shafts 3-3 are arranged on the upper surface of the base 3-1 in the length direction at the same interval, every two adjacent rotating shafts 3-3 are connected into a whole through a chain wheel, the first motor 3-2 is connected with one rotating shaft 3-3, the outer wall of each rotating shaft 3-3 is sleeved with the conveying wheel 3-4, the outer circumferential surface of the conveying wheel 3-4 is provided with a groove for placing steel, and the center line of the groove coincides with the center line of a feeding hole on the mounting cover 10; a stable pressing wheel 3-5 is arranged right above the foremost conveying wheel 3-4 and the foremost conveying wheel 4, and a gap is reserved between the stable pressing wheel 3-5 and the conveying wheel 3-4, and the gap is enough for steel to be processed to pass through; the mortar mixing mechanism 5 consists of an outer cylinder 5-1, an inner cylinder 5-2, a second motor 5-3 and a stirring assembly 5-4, wherein the outer cylinder 5-1 is of a hollow cylinder structure with an unsealed end face at the upper end, the inner cylinder 5-2 is arranged in the outer cylinder 5-1, the length of the inner cylinder 5-2 is one half of the length of the outer cylinder 5-1, the upper end of the inner cylinder 5-2 is of a fully-closed structure, the lower end of the inner cylinder 5-2 is of an unsealed structure, a gap is reserved between the bottom of the inner cylinder 5-2 and the bottom of the outer cylinder 5-1, so that a sand flow chamber is formed at a gap between the inner wall of the outer cylinder 5-1 and the outer wall of the inner cylinder 5-2, and the inner cylinder 5-2 is of a mixing stirring chamber; the inside of the inner cylinder 5-2 is provided with a stirring assembly 5-4, a second motor 5-3 is connected with the stirring assembly 5-4, the second motor 5-3 is connected with the controller 2 through a connecting wire, the upper end part of the inner cylinder 5-2 is provided with a sand outlet, and the sand outlet on the inner cylinder 5-2 is connected with the mortar proportion regulator 9 into a whole through the connecting pipe; the controller 2 is respectively connected with the feeding mechanism 3, the discharging mechanism 4, the spray gun 6, the high-pressure water pump 8, the mortar proportion regulator 9, the electromagnetic separator 13 and the uniform distributor 15 through connecting wires, so as to control the feeding mechanism 3, the discharging mechanism 4, the spray gun 6, the high-pressure water pump 8, the mortar proportion regulator 9, the electromagnetic separator 13 and the uniform distributor 15 to work.
Claims (10)
1. A method for removing a heat treatment oxide layer of steel by mixed water jet is characterized by comprising the following steps:
firstly, uniformly stirring water and sand to prepare mortar, wherein the volume ratio of the sand to the water is 15-20%;
and secondly, the mortar is conveyed into a mortar proportion regulator under the action of a conveying pump to carry out proportion regulation, so that the weight ratio of sand to water reaches 7-8:2-3, most of low-pressure water which does not play a role in the work of removing an oxide layer through spraying is separated, the proportioned mortar is uniformly distributed and conveyed into a plurality of spray guns through a uniform distributor, the mortar is provided with spraying power under the action of high-pressure water, so that the mortar is sprayed outwards at a high speed, the steel to be processed and the spray guns are in relative motion, the mortar can be uniformly sprayed on the surface of the steel to be processed, the oxide layer on the surface of the steel to be processed is removed completely, the plurality of spray guns are arranged in a concentric circle arrangement mode, the plurality of spray guns are arranged in a straight line arrangement mode for square steel plates, and the plurality of spray guns are arranged in a spiral arrangement mode for small-caliber round hollow steel.
2. The method for removing the heat treatment oxide layer of the steel material by using the mixed water jet according to claim 1, wherein the method comprises the following steps of: the third step is to wash the surface of the steel material with water through a cleaning mechanism.
3. A mixed water jet type equipment for removing a heat treatment oxide layer of steel is characterized in that: the mortar recycling integrated cabinet comprises a controller, a feeding mechanism, a discharging mechanism, a mortar mixing mechanism, a plurality of spray guns, a water storage tank, a high-pressure water pump, a mortar proportion regulator, a uniform distributor, a mounting cover with a three-dimensional structure and a mortar recycling integrated cabinet; the mortar recycling integrated cabinet is of a hollow box body structure with an unsealed end face at the upper end, and a discharging interface is arranged at the bottom of the mortar recycling integrated cabinet and is connected with the mortar mixing mechanism into a whole through a connecting pipe; a mounting cover with a three-dimensional structure is arranged above the mortar recycling integrated cabinet, one end of the mounting cover is provided with a feed inlet, the other end of the mounting cover is provided with a discharge outlet, the center line of the feed inlet and the center line of the discharge outlet coincide, a mortar discharge outlet is arranged on the mounting cover, and the mortar discharge outlet is opposite to the mortar recycling integrated cabinet; a feeding mechanism is arranged at one end close to the feeding hole of the mounting cover, a discharging mechanism is arranged at one end close to the discharging hole of the mounting cover, a plurality of spray guns are respectively arranged on the inner wall of the mounting cover, and the spraying hole of each spray gun is aligned to the surface of the steel to be processed; the mortar mixing mechanism is connected with the mortar proportion regulator through a conveying pipe, and a conveying pump is arranged on the conveying pipe; the mortar proportion regulator is connected with the uniform distributor through a connecting pipe, the uniform distributor is connected with the spray guns one by one through a plurality of conveying pipes, and the mortar proportion regulator is also connected with the mortar mixing mechanism through a sand recycling pipe and a water recycling pipe respectively; the water storage tank is connected with the spray gun through a conveying pipe, and a high-pressure water pump is further arranged on the conveying pipe; the controller is connected with the feeding mechanism, the discharging mechanism, the mortar mixing mechanism, the spray gun, the conveying pump, the high-pressure water pump, the mortar proportion regulator and the uniform distributor through connecting wires respectively.
4. A mixed water jet type steel heat treatment oxide layer removing apparatus according to claim 3, wherein: the installation cover is of a hollow and sealed cylinder structure, and the discharge end of the installation cover is of a hollow conical structure; or the discharge end and the feed end of the installation cover are of hollow conical structures, the circle center of the discharge end and the circle center of the feed end are on the same horizontal plane, and a water curtain is further arranged at the feed inlet of the installation cover.
5. A mixed water jet type steel heat treatment oxide layer removing apparatus according to claim 3 or 4, wherein: the spray guns are arranged on the inner wall of the mounting cover in a concentric circle manner; or a plurality of spray guns are arranged on the inner wall of the mounting cover in a spiral arrangement mode; or at least two spray guns are arranged on the inner wall of the mounting cover, the two spray guns are oppositely arranged, the central line of each spray gun is intersected with the central line of the mounting cover and forms an included angle, and the included angle is 40-60 degrees.
6. A mixed water jet type steel heat treatment oxide layer removing apparatus according to claim 3 or 4, wherein: the feeding mechanism is characterized by further comprising a guide assembly, wherein the guide assembly is arranged at one end of the installation cover, which is close to the feeding mechanism, along the axial direction of the installation cover, the guide assembly is a guide pipe with a hollow structure, and the center line of the guide pipe is overlapped with the center line of the installation cover; or the guide component is a guide wheel, and the central line of the guide groove on the guide wheel coincides with the central line of the mounting cover.
7. A mixed water jet type steel heat treatment oxide layer removing apparatus according to claim 3, wherein: the device also comprises a dry or wet electromagnetic separator and an oxidation layer recovery box, wherein the discharge interface of the mortar recovery integrated cabinet is connected with the electromagnetic separator, the electromagnetic separator is connected with the mortar mixing mechanism through a first recovery pipe, the electromagnetic separator is connected with the water storage tank through a second recovery pipe, the electromagnetic separator is connected with the oxidation layer recovery box through a third recovery pipe, and the electromagnetic separator is connected with the controller through a connecting wire.
8. A mixed water jet type steel heat treatment oxide layer removing apparatus according to claim 3, wherein: the feeding mechanism consists of a base, a first motor, a plurality of rotating shafts, conveying wheels and a stable pressing wheel, wherein the rotating shafts are arranged on the upper surface of the base in the length direction at the same interval, every two adjacent rotating shafts are connected into a whole through a chain wheel, the first motor is connected with one rotating shaft, the outer wall of each rotating shaft is sleeved with the conveying wheel, the outer circumferential surface of the conveying wheel is provided with a groove for placing steel, and the central line of the groove coincides with the central line of a feeding hole on the mounting cover; and a stable pressing wheel is arranged right above one or more conveying wheels, and a gap is reserved between the stable pressing wheel and the conveying wheels.
9. A mixed water jet type steel heat treatment oxide layer removing apparatus according to claim 3, wherein: the mortar mixing mechanism consists of an outer cylinder, an inner cylinder, a second motor and a stirring assembly, wherein the outer cylinder is of a hollow cylinder structure with an unsealed end face at the upper end, the inner cylinder is arranged in the outer cylinder, the length of the inner cylinder is one half of that of the outer cylinder, the upper end of the inner cylinder is of a fully-closed structure, the lower end of the inner cylinder is of an unsealed structure, a gap is reserved between the bottom of the inner cylinder and the bottom of the outer cylinder, so that a sand flow chamber is formed at the gap between the inner wall of the outer cylinder and the outer wall of the inner cylinder, and the inner cylinder is a mixing stirring chamber; the stirring assembly is arranged inside the inner cylinder, the second motor is connected with the stirring assembly, the second motor is connected with the controller through a connecting wire, a sand outlet is formed in the upper end of the inner cylinder, and the sand outlet on the inner cylinder is connected with the mortar proportion adjuster into a whole through the connecting pipe.
10. A mixed water jet type steel heat treatment oxide layer removing apparatus according to claim 3 or 4, wherein: the cleaning device is arranged above the discharge hole on the mounting cover, the cleaning device is connected with the water storage tank through a flushing pipe, and a valve is arranged on the flushing pipe.
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| CN201810250489.6A CN108406608B (en) | 2018-03-26 | 2018-03-26 | Method for removing heat treatment oxide layer of steel by mixed water jet and special equipment thereof |
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| CN109500745A (en) * | 2018-11-30 | 2019-03-22 | 中车沈阳机车车辆有限公司 | A kind of vehicle wheel is to derusting system |
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| CN207953589U (en) * | 2018-03-26 | 2018-10-12 | 嘉兴欣远钢管科技有限公司 | It mixes water-jet type removal steel and is heat-treated oxide layer equipment |
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