CN112139155A - Continuous gas cracking type derusting process for waste steel plates - Google Patents
Continuous gas cracking type derusting process for waste steel plates Download PDFInfo
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- CN112139155A CN112139155A CN202010915619.0A CN202010915619A CN112139155A CN 112139155 A CN112139155 A CN 112139155A CN 202010915619 A CN202010915619 A CN 202010915619A CN 112139155 A CN112139155 A CN 112139155A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/04—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by a combination of operations
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Abstract
The invention discloses a continuous gas-cracking type derusting process for waste steel plates, which belongs to the field of steel plate derusting and comprises the steps of performing two times of knocking, loosening the rust layer, feeding the bubble ball particles into the gaps of the loosened rust layer, heating the bubble ball particles under heating operation, expanding air in the inner air filling layer, thereby accelerating the overflow from the pre-cracking solid groove to cause the whole burst of the inner inflating layer, generating impact and vibration effects on the loosened rust layer during burst, obviously reducing the removal difficulty of the rust layer, effectively improving the rust removal efficiency of the waste steel plate compared with the prior art, and simultaneously matching the effect of secondary ball blasting, after the inner inflatable layer is exploded, fragments of the inner inflatable layer can also be exploded, so that the phenomenon of continuous explosion is presented, the impact effect on the rust layer is obviously prolonged, and the rust removal efficiency is further improved.
Description
Technical Field
The invention relates to the field of steel plate rust removal, in particular to a continuous gas-cracking type rust removal process for waste steel plates.
Background
The steel plate has great covering and containing capacity, and may be used as roof board, tarpaulin material, container, oil storage tank, packing box, train carriage, automobile casing, industrial furnace casing, etc. The steel plate can be cut and combined according to the use requirements to be made into various structural members and mechanical parts, and can also be made into welding section steel, so that the use range of the steel plate is further expanded. Can be bent and punched to form the blank of boiler, container, automobile casing, civil utensil, appliance, welded steel plate and cold-formed steel. Due to the characteristics, the total yield of the steel is over 50 percent. In order to meet the requirement of large-scale basic construction, the requirement of the past industrial products and high-grade durable consumer goods on the steel plate is increased sharply. In order to meet the requirement of new trend development, the method also has great development for the production of steel plates in China in some years, and builds a batch of advanced steel plate production backbone enterprises like Wu steel and the like. The steel sheet is supplied in sheets or coils. The gauge of the sheet steel is expressed in millimeters of thickness width length. The method is familiar with the specifications of the plate and the strip, makes full use of the width and the length, and has very important significance for improving the utilization rate of materials, reducing improper leftover materials and reducing working hours and product cost.
The steel sheet is recoverable recycles, and this has very great meaning to sustainable development, and the old and useless steel sheet of retrieving usually the surface has thicker rust layer, retrieves the back to the steel sheet, generally needs to get rid of the processing to this rust layer, and the adhesion degree of rust layer on the steel sheet is stronger usually, polishes the rust cleaning according to the conventionality among the prior art, and not only work load is great, the degree of difficulty is great, and the efficiency of rust cleaning is lower simultaneously.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a continuous gas cracking type derusting process for waste steel plates, which has the advantages that through twice knocking actions, loosening the rust layer, feeding the bubble ball particles into the gaps of the loosened rust layer, heating the bubble ball particles under heating operation, expanding air in the inner air filling layer, thereby accelerating the overflow from the pre-cracking solid groove to cause the whole burst of the inner inflating layer, generating impact and vibration effects on the loosened rust layer during burst, obviously reducing the removal difficulty of the rust layer, effectively improving the rust removal efficiency of the waste steel plate compared with the prior art, and simultaneously matching the effect of secondary ball blasting, after the inner inflatable layer is exploded, fragments of the inner inflatable layer can also be exploded, so that the phenomenon of continuous explosion is presented, the impact effect on the rust layer is obviously prolonged, and the rust removal efficiency is further improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A continuous gas cracking type derusting process for waste steel plates comprises the following steps:
s1, firstly, carrying out uneven knocking on the surface of the waste steel plate to remove a larger rust layer and simultaneously loosening part of the rust layer;
s2, reducing the knocking force, knocking the surface of the steel plate for the second time again, and increasing the loosening degree of the rust layer;
s3, blowing the bubble ball particles by an air blower to bring the bubble ball particles into the gaps of the loosened rust layer;
s4, heating the steel plate to dissolve the outer surfaces of the bubble ball particles, gradually increasing the outer surfaces of the bubble ball particles, and simultaneously continuously breaking the bubble ball particles, wherein the breaking of the bubble ball particles generates vibration and impact effects on the rust layer, so that the rust layer is effectively loosened and removed, and a rust removal semi-finished product is obtained;
and S5, cleaning the rust layer particles falling from the surface of the rust removal semi-finished product, and then carrying out conventional mechanical polishing and rust removal on the surface of the rust removal semi-finished product.
Further, the dynamics of knocking in S1 is standard in order not to cause the steel sheet to produce obvious deformation to effectively reduce and strike the influence to steel sheet shape itself, thereby effectively reduce the later stage and carry out the shape correction' S that the steel sheet that retrieves work load.
Further, the heating temperature in the step S4 is not higher than 60 ℃, and the temperature is too low, so that the cracking effect on the bubble ball particles is not obvious, the overall rust removal efficiency is affected, and the excessive input of heat energy resources and the waste of resources are easily caused due to the too high temperature.
Further, the bubble ball particles comprise an inner inflation layer filled with air, an outer wrapping layer wraps the outer end of the inner inflation layer, a plurality of pre-cracking solid grooves are drilled in the outer end of the inner inflation layer, embedded sealing layers are filled in the pre-cracking solid grooves, the pre-cracking solid grooves comprise concave ball grooves and rotary communication holes arranged at the inner bottom end of the concave ball grooves, the concave ball grooves are communicated with the rotary communication holes, when the bubble ball particles enter a loose rust layer, after heating, the outer wrapping layer and the embedded sealing layers are firstly subjected to hot melting, so that the sealing effect on the pre-cracking solid grooves is relieved, at the moment, along with the continuous high-temperature effect, the air in the inner inflation layer is subjected to thermal expansion, the overflow from the pre-cracking solid grooves is accelerated, the integral explosion of the inner inflation layer is caused, impact and vibration effects can be generated on the loose rust layer during explosion, and the difficulty in removing of the rust layer is remarkably reduced, compared with the prior art, the derusting efficiency of the waste steel plates is effectively improved.
Further, embedded locking layer and outer parcel layer are hot melt material and make, and preferred wax oil, and wax oil makes bubble ball granule surface softer, and when it entered into rust layer in under the air-blower effect, can be comparatively stable inlay in the rust layer, and then make and need not open the air-blower always at the rust cleaning in-process, can reduce the condition that bubble ball granule drops from the rust layer simultaneously and take place to make holistic rust cleaning efficiency be difficult for receiving the influence, the degree of filling of the interior intraformational air of aerifing is more than 80%, makes after being heated, and the inflation layer explodes in the inflation layer that the air can be very fast in the interior filling layer makes, thereby is showing and is accelerating the rust cleaning efficiency.
Further, gyration intercommunicating pore cross-section is the S-shaped, and inside two oral area intercommunication concave surface ball groove and the interior gas filled layer of gyration intercommunicating pore department, can effectively increase the intensity of gyration intercommunicating pore department, reduces the permeability simultaneously, effectively guarantees under the normal atmospheric temperature condition, the difficult gas leakage condition that takes place of department, and difficult simultaneously at the heating initial stage, the gas expansion volume just takes place the condition of exploding when less, and then effectively guarantees the explosive effect of bubble ball granule for get rid of the effect better to the rust layer.
Further, the inside fixedly connected with of concave surface ball groove is a plurality of and strikes stings, strike stings and be symmetrical about the gyration intercommunicating pore, after the internal gas filled layer explodes and splits, the piece that forms can collide with the rust layer to produce certain impact to the rust layer, under the effect that strikes the thorn, when striking thorn department and rust layer contact, can increase the stress with rust layer contact point department, make the impact to the rust layer better.
Furthermore, a plurality of uniformly distributed secondary fried balls are fixedly connected to the outer end of the inner inflatable layer, and each secondary fried ball comprises a connecting rope fixedly connected with the inner inflatable layer and an air-fried flat ball fixedly connected with the end of the connecting rope.
Further, the air-explosion flat ball is made of elastic membrane materials, so that the heated air-explosion flat ball can be heated to expand, and accordingly explode, air is filled in the air-explosion flat ball, the air filling degree is not higher than 70%, and compared with an inner air filling layer, the explosion speed of the air-explosion flat ball is lower than that of the inner air filling layer, fragments of the inner air filling layer after explosion can be exploded, so that the phenomenon of continuous explosion is achieved, the impact effect on a rust layer is prolonged remarkably, and the rust removal efficiency is further improved.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme is through twice effect of knocking, it is not hard up to the rust layer, later send into the rust layer gap after becoming flexible with bubble ball granule, under heating operation, bubble ball granule is heated the back, interior gas filled layer air inflation, thereby overflow from the pre-splitting solid groove with higher speed, cause the whole burst of interior gas filled layer, can produce impact and vibrations effect to not hard up rust layer during the burst, show the degree of difficulty of getting rid of that reduces the rust layer, compare in prior art, effectively improve the rust cleaning efficiency of old and useless steel sheet, the effect of the second shot of cooperation simultaneously, including the gas filled layer burst the back, the burst of can also take place for the piece of interior gas filled layer, thereby appear the phenomenon of exploding in succession, show the impact effect that the extension produced to the rust layer, further improve rust cleaning efficiency.
(2) The knocking force in the S1 is standard in order not to cause the obvious deformation of the steel plate, so that the influence of knocking on the shape of the steel plate is effectively reduced, and the workload of shape correction on the recycled steel plate in the later period is effectively reduced.
(3) The heating temperature in the S4 is not higher than 60 ℃, the temperature is too low, the cracking effect on the bubble ball particles is not obvious, the integral rust removal efficiency is influenced, the temperature is too high, the excessive input of heat energy resources is easily caused, and the waste of the resources is caused.
(4) The bubble ball particles comprise an inner inflating layer filled with air, an outer wrapping layer wraps the outer end of the inner inflating layer, a plurality of pre-crack solid grooves are chiseled at the outer end of the inner inflating layer, embedded sealing layers are filled in the pre-crack solid grooves, the pre-crack solid grooves comprise concave ball grooves and rotary communication holes arranged at the bottom ends in the concave ball grooves, the concave ball grooves are communicated with the rotary communication holes, when the bubble ball particles enter the loosened rust layer, after heating, the external wrapping layer and the embedded blocking layer are firstly melted, so that the blocking effect on the pre-cracked solid groove is removed, the air in the inner air filling layer is thermally expanded along with the continuous high-temperature effect, thereby overflow from the presplitting solid groove with higher speed, cause the whole burst of interior gas filling layer, can produce impact and vibrations effect to not hard up rust layer when exploding, show the degree of difficulty of getting rid of that reduces the rust layer, compare in prior art, effectively improve the rust cleaning efficiency of old and useless steel sheet.
(5) Embedded locking layer and outer parcel layer are hot melt material and make, and preferably wax oil, wax oil makes bubble ball granule surface softer, when it enters into the rust layer under the air-blower effect in, can be comparatively stable inlay in the rust layer, and then make and need not open the air-blower at the rust cleaning in-process always, the condition that can reduce bubble ball granule and drop from the rust layer simultaneously takes place, thereby make holistic rust cleaning efficiency be difficult for receiving the influence, the degree of filling of interior gas layer internal air is more than 80%, make after being heated, interior gas layer internal air can be the explosion of faster inflation messenger, thereby it explodes to show the efficiency of accelerating the rust cleaning.
(6) The gyration intercommunicating pore cross-section is the S-shaped, and inside two oral area intercommunication concave surface ball grooves and the interior gas filled layer of gyration intercommunicating pore department, can effectively increase the intensity of gyration intercommunicating pore department, reduces the permeability simultaneously, effectively guarantees under the normal atmospheric temperature condition, the difficult emergence gas leakage condition of department, simultaneously difficult in the heating initial stage, the condition emergence that just takes place to explode when the gas expansion volume is less, and then effectively guarantees the burst effect of bubble ball granule for the effect of getting rid of to the rust layer is better.
(7) The inside fixedly connected with of concave surface ball groove is a plurality of to strike the thorn, strikes the thorn and is symmetrical about the gyration intercommunicating pore, explodes the back when interior gas filled layer, and the piece that forms can collide with the rust layer to produce certain impact to the rust layer, under the effect that strikes the thorn, when strikeing thorn department and rust layer contact, can increase the stress with rust layer contact point department, make the impact to the rust layer better.
(8) The outer end of the inner inflating layer is fixedly connected with a plurality of uniformly distributed secondary fried balls, and each secondary fried ball comprises a connecting rope fixedly connected with the inner inflating layer and an air-fried flat ball fixedly connected with the end part of the connecting rope.
(9) The air-explosion flat ball is made of elastic membrane materials, the air-explosion flat ball can be heated to expand after being heated, the air-explosion flat ball is exploded, the air is filled in the air-explosion flat ball, the air filling degree is not higher than 70%, the air-explosion flat ball is compared with an inner air filling layer, the explosion speed of the air-explosion flat ball is slower than that of the inner air filling layer, fragments of the inner air filling layer after explosion can be exploded, the phenomenon of continuous explosion is achieved, the impact effect generated by the extension on a rust layer is obvious, and the rust removal efficiency is further improved.
Drawings
FIG. 1 is a principal flow diagram of the present invention;
FIG. 2 is a schematic structural diagram of the front side of a bubble ball particle of the present invention;
FIG. 3 is a schematic view of the structure at A in FIG. 2;
fig. 4 is a schematic structural view of the secondary ball fryer of the present invention.
The reference numbers in the figures illustrate:
11 inner air filling layers, 12 outer wrapping layers, 2 inner embedded sealing layers, 3 secondary ball blasting, 31 connecting ropes, 32 air blasting flat balls, 41 concave ball grooves, 42 rotary communication holes and 5 impact stabs.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, a continuous gas-cracking type derusting process for waste steel plates comprises the following steps:
s1, firstly, carrying out uneven knocking on the surface of the waste steel plate to remove a larger rust layer and simultaneously loosening part of the rust layer;
s2, reducing the knocking force, knocking the surface of the steel plate for the second time again, and increasing the loosening degree of the rust layer;
s3, blowing the bubble ball particles by an air blower to bring the bubble ball particles into the gaps of the loosened rust layer;
s4, heating the steel plate to dissolve the outer surfaces of the bubble ball particles, gradually increasing the outer surfaces of the bubble ball particles, and simultaneously continuously breaking the bubble ball particles, wherein the breaking of the bubble ball particles generates vibration and impact effects on the rust layer, so that the rust layer is effectively loosened and removed, and a rust removal semi-finished product is obtained;
and S5, cleaning the rust layer particles falling from the surface of the rust removal semi-finished product, and then carrying out conventional mechanical polishing and rust removal on the surface of the rust removal semi-finished product.
The knocking force in the S1 is based on the condition that the steel plate is not obviously deformed, so that the influence of knocking on the shape of the steel plate is effectively reduced, the workload of shape correction on the recovered steel plate in the later period is effectively reduced, the heating temperature in the S4 is not higher than 60 ℃, the temperature is too low, the explosive cracking effect on bubble ball particles is not obvious, the integral rust removal efficiency is influenced, the temperature is too high, excessive input of heat energy resources is easily caused, and the waste of resources is caused.
Referring to fig. 2, the bubble ball particle includes an inner inflation layer 11 filled with air, an outer wrapping layer 12 is wrapped at the outer end of the inner inflation layer 11, a plurality of pre-crack solid grooves are drilled at the outer end of the inner inflation layer 11, and an embedded locking layer 2 is filled in the pre-crack solid grooves, when the bubble ball particle enters a loose rust layer, after heating, the outer wrapping layer 12 and the embedded locking layer 2 are firstly melted by heat, so that the locking effect on the pre-crack solid grooves is removed, at the moment, the air in the inner inflation layer 11 is thermally expanded along with the continuous high-temperature effect, so as to accelerate overflow from the pre-crack solid grooves, so as to cause the whole explosion of the inner inflation layer 11, and impact and vibration effects are generated on the loose rust layer during explosion, thereby significantly reducing the difficulty of removing the rust layer, compared with the prior art, the rust removing efficiency of the waste steel plate is effectively improved, the embedded locking layer 2 and the outer wrapping layer 12 are made of hot-melt materials, and are preferably wax oil, wax oil makes bubble ball particle surface softer, when it enters into the rust layer under the air-blower effect in, can comparatively stable inlay in the rust layer, and then make and need not open the air-blower always at the rust cleaning in-process, can reduce the condition that bubble ball particle drops from the rust layer simultaneously and take place, thereby make holistic rust cleaning efficiency be difficult for receiving the influence, the degree of filling of the interior gas filled layer 11 interior air is more than 80%, make after being heated, the inflation that interior gas filled layer 11 interior air can be very fast makes interior gas filled layer 11 explode and split, thereby show and accelerate rust cleaning efficiency.
Referring to fig. 3, the pre-crack solid groove includes a concave spherical groove 41 and a rotary communication hole 42 disposed at the inner bottom end of the concave spherical groove 41, the concave spherical groove 41 is communicated with the rotary communication hole 42, the section of the rotary communication hole 42 is S-shaped, and two openings of the rotary communication hole 42 are communicated with the concave spherical groove 41 and the inner gas filling layer 11, so as to effectively increase the strength of the rotary communication hole 42, reduce the permeability, effectively ensure that the air leakage at 22 is not easy to occur at normal temperature, and the gas expansion amount is not easy to crack at the initial heating stage, thereby effectively ensuring the cracking effect of the bubble spherical particles, and making the removal effect of the rust layer better; the inside fixedly connected with of concave surface ball groove 41 strikes stings 5, strikes stings 5 and is symmetrical about gyration intercommunicating pore 42, after interior gas filled layer 11 explodes and splits, the piece that forms can collide with the rust layer to produce certain impact to the rust layer, under the effect that strikes stings 5, when striking stings 5 department and rust layer contact, can increase the stress with rust layer contact point department, make the impact to the rust layer better.
Referring to fig. 3-4, a plurality of uniformly distributed secondary blasting balls 3 are fixedly connected to the outer end of the inner inflating layer 11, each secondary blasting ball 3 includes a connecting rope 31 fixedly connected to the inner inflating layer 11 and an air blasting flat ball 32 fixedly connected to the end of the connecting rope 31, and the air blasting flat ball 32 is made of an elastic film material, so that the heated air blasting flat ball 32 can be heated and expanded to be blasted, and air is also filled in the air blasting flat ball 32, and the air filling degree is not higher than 70%.
Through twice effect of knocking, it is not hard up to the rust layer, later send into the rust layer gap after becoming flexible with bubble ball granule, under heating operation, bubble ball granule is heated the back, interior gas filled layer 11 internal air inflation, thereby overflow from pre-splitting solid groove with higher speed, cause interior gas filled layer 11 whole to explode, can produce impact and vibrations effect to not hard up rust layer during exploding, show the degree of difficulty of getting rid of that reduces the rust layer, compare in prior art, effectively improve the rust cleaning efficiency of old and useless steel sheet, the effect of the second shot 3 of cooperation simultaneously, after interior gas filled layer 11 explodes, the piece of interior gas filled layer 11 can also take place to explode, thereby appear the phenomenon of exploding in succession, show the impact effect that the extension produced to the rust layer, further improve rust cleaning efficiency.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (9)
1. A continuous gas cracking type derusting process for waste steel plates is characterized by comprising the following steps: the method comprises the following steps:
s1, firstly, carrying out uneven knocking on the surface of the waste steel plate to remove a larger rust layer and simultaneously loosening part of the rust layer;
s2, reducing the knocking force, knocking the surface of the steel plate for the second time again, and increasing the loosening degree of the rust layer;
s3, blowing the bubble ball particles by an air blower to bring the bubble ball particles into the gaps of the loosened rust layer;
s4, heating the steel plate to dissolve the outer surfaces of the bubble ball particles, gradually increasing the outer surfaces of the bubble ball particles, and simultaneously continuously breaking the bubble ball particles, wherein the breaking of the bubble ball particles generates vibration and impact effects on the rust layer, so that the rust layer is effectively loosened and removed, and a rust removal semi-finished product is obtained;
s5, cleaning rust layer particles falling from the surface of the steel plate of the rust removal semi-finished product, and then carrying out conventional mechanical polishing and rust removal on the surface of the rust removal semi-finished product.
2. The continuous gas cracking type derusting process of the waste steel plates as claimed in claim 1, which is characterized in that: the striking force in S1 is determined so as not to cause significant deformation of the steel sheet.
3. The continuous gas cracking type derusting process of the waste steel plates as claimed in claim 2, which is characterized in that: the temperature of heating in the S4 is not higher than 60 ℃.
4. The continuous gas cracking type derusting process of the waste steel plates as claimed in claim 1, which is characterized in that: bubble ball granule is including inside filling in gas filling layer (11) that has the air, in gas filling layer (11) outer end parcel has outer parcel layer (12), in gas filling layer (11) outer end cut a plurality of presplitting solid grooves, presplitting solid inslot portion is filled with embedded locking layer (2), the presplitting solid groove includes concave surface ball groove (41) and sets up gyration intercommunicating pore (42) in concave surface ball groove (41) bottom, concave surface ball groove (41) and gyration intercommunicating pore (42) communicate with each other.
5. The continuous gas cracking type derusting process of the waste steel plates as claimed in claim 4, which is characterized in that: the embedded sealing layer (2) and the outer wrapping layer (12) are both made of hot-melt materials, wax oil is preferred, and the filling degree of air in the inner inflating layer (11) is more than 80%.
6. The continuous gas cracking type derusting process of the waste steel plates as claimed in claim 4, which is characterized in that: the section of the rotary communication hole (42) is S-shaped, and two openings of the rotary communication hole (42) are communicated with the concave spherical groove (41) and the inner part of the inner inflation layer (11).
7. The continuous gas cracking type derusting process of the waste steel plates as claimed in claim 6, which is characterized in that: the inner part of the concave spherical groove (41) is fixedly connected with a plurality of impact thorns (5), and the impact thorns (5) are symmetrical about the rotary communicating hole (42).
8. The continuous gas cracking type derusting process of the waste steel plates as claimed in claim 4, which is characterized in that: the outer end of the inner inflating layer (11) is fixedly connected with a plurality of uniformly distributed secondary fried balls (3), and each secondary fried ball (3) comprises a connecting rope (31) fixedly connected with the inner inflating layer (11) and an air-fried flat ball (32) fixedly connected with the end part of the connecting rope (31).
9. The continuous gas cracking type derusting process of the waste steel plates as claimed in claim 8, which is characterized in that: the air-fried flat ball (32) is made of elastic film materials, air is filled in the air-fried flat ball (32), and the air filling degree is not higher than 70%.
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| CN114042696A (en) * | 2021-09-24 | 2022-02-15 | 易伟 | Process for removing oxide skin on surface of forge piece |
| CN114635241A (en) * | 2022-03-24 | 2022-06-17 | 薛强 | Rinsing process for textile long yarns |
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