CN113953981B - Pretreatment method and roughening system for metal connecting ring - Google Patents
Pretreatment method and roughening system for metal connecting ring Download PDFInfo
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- CN113953981B CN113953981B CN202111267698.XA CN202111267698A CN113953981B CN 113953981 B CN113953981 B CN 113953981B CN 202111267698 A CN202111267698 A CN 202111267698A CN 113953981 B CN113953981 B CN 113953981B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
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- 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
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Abstract
The invention discloses a pretreatment method of a metal connecting ring, which comprises the following steps: selecting a bonding surface of a metal connecting ring; fixing the metal connecting ring on the rotating device through the fixing device, and protecting the non-bonding surface through the fixing device and/or the protection tool; and driving the metal connecting ring to rotate at a constant speed, and spraying coarsening particles on the surface of the bonding surface by taking gas as a conveying medium to perform continuous equidistant coarsening. Simultaneously discloses a metal connecting ring roughening system; the roughening of the bonding surface of the metal connecting ring is uniform and is not omitted, and the non-bonding surface is not damaged.
Description
Technical Field
The invention relates to the technical field of metal connecting ring pretreatment for aerospace, in particular to a pretreatment method for a large-caliber special-shaped radome metal connecting ring.
Background
With the rapid development of aerospace vehicles, the requirements of the aircraft on the materials of the aircraft are higher and higher due to the severe operating environment and the limited effective load. The load-bearing and functional components of the aircraft are therefore often realized by means of ceramic materials in combination with metallic materials. It is now mature to use adhesive bonding as a means of assembling metallic and ceramic materials. The common metal materials for aviation and aerospace craft are stainless steel, aluminum alloy, high-temperature alloy, titanium alloy, invar and other materials.
In the process of processing, transporting and storing metal, the surface often has excessive impurities such as greasy dirt, rust, dust and the like, which can influence the on-orbit stability of the aircraft, especially, during the integrated assembly, the adhesive force and the adhesive strength of the metal and the ceramic can be greatly reduced, the situation that the adhesive layer is easy to be de-adhered and is virtually adhered can cause serious consequences such as aviation accidents and the like; even if the metal surface is cleaned, after the metal smooth surface is directly bonded with the ceramic, the bonding strength is not high, and the debonding and cracking phenomena are easy to occur.
Therefore, the surface of the metal material needs to be roughened, so that the roughness and adhesive strength of the metal surface are improved. At present, manual polishing, sand blasting, etching and a combination of several modes are generally adopted for the surface roughening pretreatment mode of the metal material in China, but the requirements on precision and appearance high cleanliness of non-bonding parts of the radome metal connecting ring (a mode that a ceramic body is generally bonded with the metal ring and the metal ring is mechanically connected with a rear cabin section) are high, and in the roughening process, the parts which do not need to be roughened are easily damaged, so that the metal roughening is difficult.
Disclosure of Invention
The invention aims to solve the problems that the bonding reliability of the metal connecting ring and the ceramic radome is poor and the non-bonding surface of the metal connecting ring is extremely easy to damage in the roughening process of the bonding surface of the metal connecting ring, and particularly to realize the efficient uniform roughening treatment of the bonding surface of the metal connecting ring of the radome without damaging the non-bonding surface. The invention provides a pretreatment method of a metal connecting ring and a roughening system of the metal connecting ring, wherein the metal connecting ring is fixed on a rotating device through a fixing device, and meanwhile, the metal connecting ring protects a non-bonding surface through the fixing device and/or a protection tool; the rotary device drives the metal connecting ring to rotate, and continuous equidistant roughening is carried out on the bonding surface through sand blasting equipment; spraying coarsening particles on the surface of the bonding surface by adopting sand blasting equipment, wherein the coarsening particles take gas as a conveying medium; the sand blasting equipment further comprises a control device; the control device realizes roughening of the bonding surface; the roughening of the bonding surface of the metal connecting ring is uniform and is not omitted, and the non-bonding surface is not damaged.
According to one aspect of the invention, a metal connecting ring pretreatment method is provided, wherein a bonding surface of a metal connecting ring is selected;
fixing the metal connecting ring on the rotating device through the fixing device, and protecting the non-bonding surface through the fixing device and/or the protection tool;
and driving the metal connecting ring to rotate at a constant speed, and spraying coarsening particles on the surface of the bonding surface by taking gas as a conveying medium to perform continuous equidistant coarsening.
The metal connecting ring comprises a bonding surface and a non-bonding surface; the non-bonding surface is required to be uniformly roughened, and the non-bonding surface is protected from damage or scratch; the metal connecting ring is of a complex elliptic structure with a certain taper and irregular shape;
preferably, the surface of the metal connecting ring comprises a plurality of threaded holes and/or glue discharging grooves; the protection tool comprises screws, a protection sleeve, a protection plate and an adhesive, wherein the protection plate is provided with a protection plate protrusion matched with the glue discharging groove, the protection plate protrusion is in contact with the inner wall of the glue discharging groove, and the protection plate protrusion is connected with the inner wall of the glue discharging groove through the adhesive; the binder is dissolved in water or alcohol;
before continuously roughening the surface of the metal connecting ring, sealing the threaded holes on the pretreated surface of the metal connecting ring by using screws wrapped with a protective sleeve or a raw material belt, wherein the protective sleeve or the raw material cannot damage the holes; and/or the adhesive discharging groove is blocked from the inner side of the metal ring by using a guard plate, and is fixed on the inner wall of the adhesive discharging groove through the bulge of the adhesive guard plate; the rotating equipment is automatic turntable equipment; the metal connecting ring is continuously roughened for 6-10 min; the pretreatment method of the metal connecting ring; the method also comprises the steps of cleaning the metal connecting ring by an organic solvent after coarsening is finished, then blowing by dry compressed air, and spraying a long-acting corrosion-resistant rust-proof moisture-proof organic coating on the surface for preservation; further preferably, the surface is cleaned with absolute ethanol.
Compared with the prior art, the invention has the beneficial effects that the fixing device is used for realizing the covering protection of the surface of the non-bonding surface part of the metal connecting ring while the metal connecting ring is fixed on the rotating device to rotate along with the rotating device; the sand blasting equipment is used for sand blasting and coarsening the uniform-speed rotating metal connecting ring, so that the coarsening is uniform when the metal connecting ring is coarsened, and the non-bonding surface is prevented from being damaged when the metal connecting ring needs to be coarsened;
by adopting the spray roughening particles to perform continuous equidistant roughening, the roughening efficiency and the roughening uniformity are obviously improved; the coarsening particle conveying medium is gas, so that the problem that the coarsening particles flow along with the liquid at the surface of the metal connecting ring randomly after the coarsening particles are rubbed on the surface of the metal connecting ring when the coarsening particles are conveyed by the liquid is avoided, and the non-bonding surface of the fixing device and/or the protective tool can be permeated, the pollution and damage to the non-bonding surface of the metal connecting ring are avoided, and meanwhile, the coarsening uniformity is realized through equidistant continuous coarsening, and the problem that the coarsening effect of the gas serving as the coarsening medium is poorer than that of the gas serving as the conveying medium is avoided;
the metal connecting ring is cleaned by the organic solvent, then is purged by dry compressed air, and is preserved by spraying the long-acting corrosion-resistant rust-proof moisture-proof organic coating on the surface, so that the antenna housing connecting ring is prevented from being corroded or damaged in the storage and transportation process after coarsening.
Furthermore, the required bonding surface is continuously roughened and simultaneously sand and dust are automatically separated, so that the roughening particle size of the required roughened surface is stable and the surface roughness is uniform.
The technical scheme has the beneficial effects that by automatically separating sand and dust, useless impurities such as broken sand materials, welding slag, oxide skin, dust and the like generated by friction in the roughening process are quickly sucked away, so that uneven surface roughness caused by the fact that fine particles and dust remain on the surface of the metal connecting ring is avoided; more mainly, fine particles and dust are prevented from entering the covered non-bonding surface, the uniform roughening of the surface of the metal connecting ring is effectively realized, and meanwhile, the pollution and damage of the non-bonding surface are avoided.
Further, after roughening the required bonding surface, the roughness value is Ra (5.8-6.5), and no missing area exists.
The technical scheme of the last step has the beneficial effects that the roughness value of the metal connecting ring can reach Ra (5.8-6.5) by the pretreatment method, and the metal surface and the ceramic are firmly and reliably bonded under the roughness.
Further, the coarsening particles are silicon carbide sand or silicon carbide sand; the coarsening particle size is 24-30 meshes.
The technical scheme has the advantages that the silicon carbide sand or the silicon carbide sand is high in hardness and good in abrasion performance, and is suitable for carrying out high-quality roughening treatment on the surface of the metal connecting ring with high hardness; if the particle size of the coarsening particles is too large, coarsening is easy to cause poor uniformity of coarsening surface roughness due to relatively dispersing, if too small, coarsening efficiency is too low, and particles are easy to enter and damage a covered non-bonding surface.
According to another aspect of the present invention, there is provided a metal connecting ring roughening system including a fixing device, a sand blasting device, a rotating device, and a control device;
the fixing device is used for fixing the metal connecting ring on the rotating device;
the sand blasting device comprises a particle injection outlet and a dust collection port;
the control device is used for controlling the particle injection outlet to move so that the distance from the particle injection outlet to the corresponding coarsening point is a fixed value; simultaneously controlling the motion of the dust collection port to enable the angle between the air inlet direction of the dust collection port and the sand blasting direction of the jet outlet to be 0-30 degrees;
preferably, the sand blasting equipment further comprises a support frame, a cloth bag dust removing device and a fan; the ejection outlet is fixed on the support frame through a transverse expansion device and a longitudinal swinging device; the control device is electrically connected with the transverse expansion device and the longitudinal swinging device, and the dust collection opening is fixed on the support frame and connected with the fan through the cloth bag dust collection device.
Compared with the prior art, the metal ring roughening system has the beneficial effects that the metal connecting ring is subjected to equidistant continuous roughening, and the dust collection port directly sucks away other foreign matters such as fine particles and dust generated during roughening, so that the fine particles and dust are prevented from drifting into a non-bonding surface and damaging the non-bonding surface;
the control device is used for controlling the movement of the particle injection outlet, so that the distance from the particle injection outlet to the corresponding roughening point is a preset value, and continuous equidistant roughening is realized;
by controlling the movement of the dust collection opening at the same time, the angle between the air inlet direction of the dust collection opening and the sand blasting direction of the jet outlet is 0-30 degrees, continuous roughening is realized, automatic sand and dust separation is carried out at the same time, and the wind power of dust collection can not suck roughening particles or reduce the pressure when the roughening particles reach the roughened surface.
Further, the sand blasting device also comprises a transverse expansion device and a longitudinal swinging device;
the transverse expansion device comprises a guide rail, a guide rod and a servo motor;
the longitudinal swinging device comprises an electronic cam mechanism;
the particle injection outlet and the dust collection port are connected with the guide rod through an electronic cam mechanism;
the transverse telescopic device realizes transverse reciprocating telescopic of the particle ejection outlet;
the longitudinal swinging device realizes swinging of the particle injection outlet within a certain angle range.
The technical scheme has the advantages that the servo motor provides power to realize transverse expansion of the guide rod along the guide rail, meanwhile, the servo motor transmits start-stop signals and expansion rate to the control device in an electric signal mode, and meanwhile, equipment input information output by the control device can be received, and start-stop and expansion rate adjustment is realized;
the electronic cam mechanism realizes the longitudinal swing of the injection outlet, can transmit the starting information and the longitudinal swing angular speed information to the control device, can realize the input information of equipment output by the control device, and can realize the start and stop and the like;
the particle injection outlet and the dust collection opening are connected with the guide rod through the cam mechanism, so that the injection outlet and the dust collection opening always keep a certain position relationship in work, and the angle between the air inlet direction of the dust collection opening and the sand spraying direction of the injection outlet is 0-30 degrees.
Further, the control device comprises an information acquisition unit, an information processing unit and an information output unit;
the information acquisition unit is used for acquiring output information of the rotating device, the transverse expansion device and the longitudinal swinging device and transmitting the output information of the equipment to the information processing unit;
the information processing unit processes the equipment output information through preset parameters and preset programs, and transmits the processed equipment input information to the information output unit;
the information output unit transmits the equipment input information to the rotating device, the transverse expansion device and the longitudinal swinging device, and commands the transverse expansion device to transversely reciprocate and expand and contract and the longitudinal swinging device to swing up and down.
The technical scheme has the advantages that the information acquisition unit is used for acquiring and identifying equipment information, the equipment information is transmitted to the information processing unit, the processing unit is used for comparing and calculating the acquired information and preset information, the output equipment is used for inputting information to the information output unit, the information output unit is used for outputting the information and transmitting the information to corresponding equipment, and the start and stop, speed adjustment and the like of the corresponding equipment are controlled; finally, equidistant continuous roughening is carried out on the bonding surface of the metal connecting ring.
Further, the equipment output information comprises rotation speed information and start-stop information of the rotation device, expansion speed information and expansion start-stop information of the transverse expansion device, swing angular speed information and swing start-stop information of the longitudinal swing device, and one or more of the above information;
the device input information includes: the device comprises a rotating device, a transverse expansion device, a longitudinal swinging device, a vertical swinging device, a horizontal swinging device, a vertical swinging device and a horizontal swinging device, wherein the rotating device is provided with a rotating speed setting information, a rotating starting information and a rotating stopping information;
the preset program comprises a rotation starting program, a sand blasting starting and stopping program, a transverse telescopic starting and stopping program, a longitudinal swinging starting and stopping program and a spraying track calculating program;
the preset information parameters comprise rotation speed information in a rotation device, swing angular speed information omega of the longitudinal swinging device and alpha range information, wherein alpha is an included angle between a cam center connecting line from a particle injection outlet to an electronic cam mechanism and a vertical line from the particle injection outlet to a bonding surface of a metal ring, distance H information from the particle injection outlet to the surface of the bonding surface when alpha is 0, distance L information from the cam center of the electronic cam mechanism to the particle injection outlet and a telescopic rate calculation formula; the calculation formula of the expansion rate v is as follows:
t/t=n … … m, α=ωm, v= (h+l), (1-cos α)/T when n is odd; alpha=90° - ωm when n is even; v= - (h+l), (1-cos α)/t;
the injection track calculation program comprises the set swing starting information and the set transverse expansion starting information which are simultaneously started, calculates and outputs a set expansion rate which changes along with time according to a preset parameter and the expansion rate calculation formula;
t is the continuous swinging time of the longitudinal swinging device; the position of the particle spraying outlet vertical to the metal bonding surface swings to the position farthest from the position, wherein the period is the time of the period; n is the quotient of T/T and m is the remainder of T/T.
The technical scheme has the beneficial effects that the telescopic speed v calculation formula is adopted to control the telescopic speed change of the transverse telescopic device, so that when the particle injection outlet swings at a certain angular speed, the transverse telescopic device performs variable speed telescopic operation, and the distance from the particle injection outlet to a corresponding coarsening point is kept to be a fixed value.
Further, the fixing device comprises a base, a compression chuck, a sealing buffer piece and a fixing connecting piece;
the compaction chuck is provided with a circular boss matched with the inner diameter of one end of the metal connecting ring in size, and a first through hole is formed in the boss;
the base is arranged opposite to the compaction chuck, and two ends of the fixed connecting piece are respectively connected with the compaction chuck and the base.
The base is connected with the compaction chuck through a fixed connecting piece; the metal connecting ring is positioned between the base and the compaction chuck; the sealing buffer piece is positioned between the metal connecting ring and the base and/or the compression chuck; the surface and/or the end face of the non-bonding surface of the metal connecting ring is covered by a compression chuck and a base; the fixed connecting piece penetrates through the first through hole, two ends of the fixed connecting piece are respectively connected with the compression chuck and the base, and the metal connecting piece is fixed between the compression chuck and the base;
preferably, the base is made of 304 stainless steel, the base is provided with an annular groove with the width being consistent with the wall thickness of the connecting surface of the metal connecting ring, the depth of the annular groove is 5-9 mm, the sealing buffer piece is positioned in the annular groove, the thickness of the sealing buffer piece is 2-3 mm, and the preferable material is polyurethane plastic; the compressing chuck is provided with a handle, so that the compressing chuck is convenient to install and dismantle;
the fixed connecting piece is a fixed screw rod, the screw rod is inserted from a second through hole in the center of the compression chuck and is screwed and connected with a threaded hole in the center of the base, and the other end of the screw rod is fixed on the compression chuck by a metal nut and a gasket; the height of the boss is 3-5 mm, and the second through hole is
The technical scheme has the beneficial effects that the metal piece is fixed on the rotating equipment through the base and the compression chuck, the upper surface and the lower surface of the non-bonding surface of the metal connecting ring are covered, the side wall of the metal connecting ring which needs roughening is exposed, and the roughening is convenient; the sealing buffer piece not only realizes abrasion of the contact part of the metal connecting ring, the base and the compaction chuck during compaction, but also has certain elastic buffer and deformation, so that the sealing of the non-bonding surface of the metal connecting ring can be further improved, and the surface of the metal connecting ring is prevented from being damaged by the foreign matters;
the fixed connection piece can be fixed to the metal connecting ring through compressing tightly the chuck and the base, and meanwhile, a round boss matched with the inner diameter of one end of the metal connecting ring is arranged on the chuck through compressing tightly, a through hole is formed in the boss, sealing of the middle through hole of the metal connecting ring is achieved, and the inner wall of the through hole is prevented from being damaged in the roughening process.
Further, the distance between the particle injection outlet and the coarsening surface of the metal connecting ring is 50-100 mm, and the distance is adjustable;
when the surface of the bonding surface is continuously roughened at equal intervals, the angle between the air inlet direction of the dust collection opening and the sand blasting direction of the jet outlet is 0-30 ℃; the distance between the dust collection opening and the roughened surface of the metal connecting ring is 450-600 mm; the rotating speed of the metal connecting ring is 0.4-0.5 r/min; the air outlet pressure of the particle jet outlet is 0.5-0.8 MPa, and the air flow of the particle jet outlet is 0.8-1.0 m 3 A/min; the distance of the transverse reciprocating telescopic movement is 0-100 mm, and the vertical free swing angle is 85-100 degrees; preferably, the dust collection opening is arranged opposite to the rough speech treatment surface of the metal connecting ring.
The technical proposal of the last step has the advantages that the spraying distance is beneficial to realizing the coarsening of the surface of the metal connecting ring and reducing the generation of fine particles and dust; the angle between the air inlet direction of the return air absorption port and the sand blasting direction of the jet outlet is 0-30 ℃, so that dust and useless sundries can be quickly absorbed away, and the coarsening effect of coarsening particles on the surface of the metal ring is not influenced; but also ensures that operators can have clear enough working sight in the sand blasting operation;
the rotating speed is beneficial to the uniform and non-omission roughening of the surface of the metal connecting ring, and simultaneously, fine particles and dust are prevented from moving along the surface of the metal connecting ring under the centrifugal force, so that the fine particles and the dust are further prevented from drifting to a covered non-bonding surface, and the fine particles and the dust are beneficial to the rapid sand-dust separation.
Drawings
FIG. 1 is a perspective view of a fastening device and a metal connecting ring according to the present invention.
FIG. 2 is a cross-sectional view of the fastening device and the metal connecting ring of the present invention.
Fig. 3 is a structural view of a metal connection ring of a radome provided with a glue discharging groove.
FIG. 4 is a schematic diagram of a roughening system for metal connecting rings according to the present invention.
The labels shown in the drawings: 1. a base; 2. a pressing chuck; 3. sealing the buffer member; 4. fixing the connecting piece; 5. a handle; 6. a bonding surface; 7. a first through hole; 8. a glue discharging groove; 9. a guide rail; 10. a guide rod; 11. a cam; 12. a particle injection outlet; 13. a dust collection port.
Detailed Description
For a better understanding of the technical solution of the present invention, the present invention will be further described with reference to the following specific examples and the accompanying drawings.
Example 1:
an aspect of the present embodiment provides a metal connection ring pretreatment method, where the metal connection ring is provided with a first through hole, and is a complex elliptical structure with a certain taper and an irregular shape; the surface of the metal connecting ring is also provided with a plurality of threaded holes; the pretreatment method of the metal connecting ring comprises the following steps: covering and protecting the non-bonding surface of the metal connecting ring through a fixing device; fixing the protected metal connecting ring on an automatic turntable; continuously roughening the surface 6 to be bonded at equal intervals under the rotating state of the metal connecting ring; the roughening step is as follows: spraying coarsening particles on a required bonding surface 6 by adopting sand blasting equipment, wherein the coarsening particles are conveyed by gas as a conveying medium; equidistant continuous roughening of the bonding surface 6 is realized by a control device; the coarsening particles are silicon carbide sand; the coarsening particle size is 30 meshes.
Before the surface of the metal connecting ring is continuously roughened at equal intervals, the threaded hole is protected by a protection tool, the protection tool is a screw sleeved with a protective sleeve, and the screw sleeved with the protective sleeve is filled into the threaded hole; and the roughening treatment is continuously carried out on the metal connecting ring for 8min.
Continuous roughening is carried out on the bonding surface, and sand dust automatic separation is carried out at the same time, so that the required roughened surface has stable size of roughened particles and uniform surface roughness; coarsening the required bonding surface, wherein the roughness value is Ra5.9, and no missing area exists; and (3) cleaning the surface of the roughened metal connecting ring by absolute ethyl alcohol, then blowing by dry compressed air, and spraying a long-acting corrosion-resistant rust-proof moisture-proof organic coating on the surface for preservation.
Another aspect of the present embodiments provides a metal connection ring roughening system: comprises a fixing device, a sand blasting device, a rotating device and a control device; the fixing device is used for fixing the metal connecting ring on the rotating device; the sand blasting device comprises a particle injection outlet 12 and a dust collection port 13;
the control device is used for controlling the movement of the particle injection outlet 12 so that the distance from the particle injection outlet 12 to the corresponding roughening point is a fixed value; the movement of the suction opening 13 is controlled at the same time so that the angle between the air inlet direction of the suction opening 13 and the blasting direction of the ejection outlet is 2 deg..
The sand blasting equipment also comprises a support frame, a cloth bag dust removing device and a fan; the ejection outlet is fixed on the support frame through a transverse expansion device and a longitudinal swinging device; the control device is electrically connected with the transverse expansion device and the longitudinal swinging device, and the dust collection opening 13 is fixed on the support frame and is connected with the fan through the cloth bag dust collection device.
The sand blasting device also comprises a transverse expansion device and a longitudinal swinging device; the transverse telescopic device comprises a guide rail 9, a guide rod 11 and a servo motor; the longitudinal swinging device comprises an electronic cam mechanism;
the particle injection outlet 12 and the dust collection port 13 are connected with the guide rod 11 through an electronic cam mechanism; the transverse telescopic device realizes transverse reciprocating telescopic operation of the particle injection outlet 12; the longitudinal swinging means enables swinging of the particle injection outlet 12 over a range of angles.
The control device comprises an information acquisition unit, an information processing unit and an information output unit;
the information acquisition unit is used for acquiring output information of the rotating device, the transverse expansion device and the longitudinal swinging device and transmitting the output information of the equipment to the information processing unit;
the information processing unit processes the equipment output information through preset parameters and preset programs, and transmits the processed equipment input information to the information output unit;
the information output unit transmits the equipment input information to the rotating device, the transverse expansion device and the longitudinal swinging device, and commands the transverse expansion device to transversely reciprocate and expand and contract and the longitudinal swinging device to swing up and down.
The equipment output information comprises rotation speed information and start-stop information of the rotation device, expansion speed information and expansion start-stop information of the transverse expansion device, and swing angular speed information and swing start-stop information of the longitudinal swinging device;
the device input information includes: the device comprises a rotating device, a transverse expansion device, a longitudinal swinging device, a vertical swinging device, a horizontal swinging device, a vertical swinging device and a horizontal swinging device, wherein the rotating device is provided with a rotating speed setting information, a rotating starting information and a rotating stopping information; the preset program comprises a rotation starting program, a sand blasting starting and stopping program, a transverse telescopic starting and stopping program, a longitudinal swinging starting and stopping program and a spraying track calculating program;
the preset information parameters comprise rotation speed information in a rotation device, swing angular speed information omega of the longitudinal swinging device and alpha range information, wherein alpha is an included angle between a connecting line of a center of a cam 11 of the electronic cam mechanism from a particle injection outlet 12 and a vertical line of a bonding surface of a metal ring from the particle injection outlet 12, distance H information of the surface of the bonding surface from the particle injection outlet 12 when alpha is 0, distance L information of the center of the cam 11 of the electronic cam mechanism from the particle injection outlet 12 and a telescopic rate calculation formula;
the calculation formula of the expansion rate v is as follows:
t/t=n … … m, α=ωm, v= (h+l), (1-cos α)/T when n is odd; alpha=90° - ωm when n is even; v= - (h+l), (1-cos α)/t; t is the continuous swinging time of the longitudinal swinging device; the position of the particle ejection outlet 12 perpendicular to the metal bonding surface, the swing to the position farthest from this position is one cycle, and the T is the time of this cycle; n is the quotient of T/T and m is the remainder of T/T.
The injection track calculation program comprises the set swing starting information and the set transverse expansion starting information which are simultaneously started, calculates and outputs a set expansion rate which changes along with time according to a preset parameter and the expansion rate calculation formula;
the fixing device comprises a base 1, a compression chuck 2, a sealing buffer piece 3 and a fixing connecting piece 4;
the base 1 is connected with the compaction chuck 2 through a fixed connecting piece 4; the metal connecting ring is positioned between the base 1 and the compaction chuck 2; the metal connecting ring is provided with a first through hole, and is of a complex elliptic structure with a certain taper and irregular shape; the compaction chuck 2 is provided with a circular boss matched with the inner diameter of one end of the metal connecting ring, and a second through hole is formed in the boss;
the sealing buffer piece 3 is positioned between the metal connecting ring and the base 1 and the compaction chuck 2; the surface and the end face of the non-bonding surface of the metal connecting ring are covered by the compaction chuck 2 and the base 1;
the base 1 is made of 304 stainless steel, the base 1 is provided with an annular groove with the width matched with the wall thickness of the connecting surface of the metal connecting ring, the depth of the annular groove is 7mm, the sealing buffer piece 3 is positioned in the annular groove, the thickness of the sealing buffer piece 3 is 2.5mm, and the preferable material is polyurethane plastic; the compressing chuck 2 is provided with a handle 5, so that the compressing chuck is convenient to install and dismantle.
The fixed connecting piece 4 is a fixed screw rod, the screw rod is inserted by a through hole in the center of the compression chuck and is screwed and connected with a threaded hole in the center of the base, and the other end of the screw rod is fixed on the compression chuck 2 by a metal nut and a gasket.
When roughening, the spraying equipment comprises a spraying outlet, the distance between the spraying outlet and the roughened surface is 75mm, and the total angle of up-and-down swing of the spray gun is 90 degrees; during the continuous roughening, the rotating speed of the metal connecting ring is 0.45 r/min;
during coarsening, the angle between the air inlet direction of the dust collection opening 13 and the sand blasting direction of the jet outlet is 0-30 degrees; the distance between the dust collection opening 13 and the roughened surface of the metal connecting ring is 525mm;
the air outlet pressure of the particle injection outlet 12 is 0.65MPa, and the air flow of the particle injection outlet 12 is 0.9m 3 /min；
Example 2:
the same contents of this embodiment as those of embodiment 1 will not be described again; the same contents of this embodiment as those of embodiment 1 will not be described again;
an aspect of the present embodiment provides a metal connection ring pretreatment method, in which the metal connection ring is roughened for 10min; the coarsening particles are silicon carbide; the coarsening particle size is 25 meshes; coarsening; after roughening the required bonding surface, the roughness value is Ra6.3, and no missing area exists.
Another aspect of the present embodiments provides a metal connection ring roughening system: the angle between the air inlet direction of the dust collection opening 13 and the sand blasting direction of the jet outlet is 15 degrees; the distance between the dust collection opening 13 and the roughened surface of the metal connecting ring is 450mm;
the air outlet pressure of the particle injection outlet 12 is 0.5MPa, and the air flow of the particle injection outlet 12 is 0.8m 3 A/min; when coarsening, the distance between the spraying outlet and the bonding surface 6 is 50mm, and the total angle of up-and-down swing of the spray gun is 90 degrees; and during the continuous roughening, the rotating speed of the metal piece is 0.5 revolution/min. Example 3:
the same contents of this embodiment as those of embodiment 1 will not be described again;
an aspect of the present embodiment provides a metal ring pretreatment method, where the surface of the metal connection ring includes a plurality of or glue discharging grooves; the protection tool comprises a protection plate and an adhesive, wherein the protection plate is provided with a protection plate protrusion matched with the glue discharging groove, and the protection plate protrusion is contacted with the inner wall of the glue discharging groove and is connected with the inner wall of the glue discharging groove through the adhesive; the binder is dissolved in water or alcohol;
before the surface of the metal connecting ring is continuously roughened, a protecting plate is used for blocking the glue discharging groove from the inner side of the metal ring, and the protecting plate is fixed on the inner wall of the glue discharging groove through the bulge of the adhesive protecting plate; the metal connecting ring is continuously roughened for 6min; the coarsening particles are carbonized carborundum; the coarsening particle size is 30 meshes; after roughening the required bonding surface, the roughness value is Ra6.5, and no missing area exists.
Another aspect of the present embodiments provides a metal connection ring roughening system: during coarsening, the angle between the air inlet direction of the dust collection opening 13 and the sand blasting direction of the jet outlet is 30 degrees; when coarsening, the distance between the jet outlet and the coarsening surface is 100mm, and the total angle of up-and-down swing of the spray gun is 90 degrees; and during the continuous roughening, the rotating speed of the metal piece is 0.4 revolution/min.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the features described above, have similar functionality as disclosed (but not limited to) in this application.
Claims (10)
1. The pretreatment method of the metal connecting ring is characterized by comprising the following steps of:
selecting a bonding surface of a metal connecting ring;
fixing the metal connecting ring on the rotating device through the fixing device, and protecting the non-bonding surface through the fixing device and/or the protection tool;
driving the metal connecting ring to rotate at a constant speed, and spraying coarsening particles on the surface of the bonding surface by taking gas as a conveying medium to perform continuous equidistant coarsening;
the metal connecting ring pretreatment method further comprises,
a fixing device, a sand blasting device, a rotating device and a control device;
the fixing device is used for fixing the metal connecting ring on the rotating device;
the sand blasting device comprises a particle injection outlet, a dust collection port, a transverse expansion device and a longitudinal swinging device;
the transverse telescopic device realizes transverse reciprocating telescopic of the particle ejection outlet;
the longitudinal swinging device swings in a certain angle range of the particle injection outlet;
the control device comprises an information acquisition unit, an information processing unit and an information output unit;
the information acquisition unit is used for acquiring output information of the rotating device, the transverse expansion device and the longitudinal swinging device and transmitting the equipment output information to the information processing unit;
the information processing unit processes the equipment output information through preset parameters and preset programs, and transmits the processed equipment input information to the information output unit;
the information output unit transmits the equipment input information to the rotating device, the transverse expansion device and the longitudinal swinging device, so as to command the transverse expansion device to transversely reciprocate to expand and contract and enable the longitudinal swinging device to swing up and down; the equipment output information comprises rotation speed information and start-stop information of the rotation device, expansion speed information and expansion start-stop information of the transverse expansion device, swing angular speed information and swing start-stop information of the longitudinal swinging device, and one or more of the above information;
the device input information includes: the device comprises a rotating device, a transverse expansion device, a longitudinal swinging device, a vertical swinging device, a horizontal swinging device, a vertical swinging device and a horizontal swinging device, wherein the rotating device is provided with a rotating speed setting information, a rotating starting information and a rotating stopping information;
the preset program comprises a rotation starting program, a sand blasting starting and stopping program, a transverse telescopic starting and stopping program, a longitudinal swinging starting and stopping program and a spraying track calculating program;
the preset information parameters comprise rotation speed information in the rotation device, swing angular speed information omega of the longitudinal swinging device and alpha range information, wherein alpha is an included angle between a cam center connecting line from a particle injection outlet to an electronic cam mechanism and a vertical line from the particle injection outlet to a bonding surface of a metal ring, distance H information from the particle injection outlet to the surface of the bonding surface when alpha is 0, distance L information from the cam center of the electronic cam mechanism to the particle injection outlet and a telescopic rate calculation formula;
the calculation formula of the expansion rate v is as follows:
t/t=n … … m, α=ωm, v= (h+l), (1-cos α)/T when n is odd; alpha=90° - ωm when n is even; v= - (h+l), (1-cos α)/t;
the injection track calculation program comprises the set swing starting information and the set transverse expansion starting information which are started simultaneously, and calculates and outputs the set expansion rate which changes along with time according to a preset parameter and the expansion rate calculation formula.
2. The pretreatment method for metal connecting ring according to claim 1, wherein the bonding surface is continuously roughened and sand and dust are automatically separated.
3. The method of claim 1, wherein the roughness value of the roughened bonding surface is Ra (5.8-6.5).
4. The method for pretreating a metal connecting ring according to claim 1, wherein the coarsening particles are silicon carbide sand or silicon carbide sand; the granularity of the coarsening particles is 24-30 meshes.
5. A metal connecting ring roughening system for implementing the metal connecting ring pretreatment method of any one of claims 1-4;
comprises a fixing device, a sand blasting device, a rotating device and a control device;
the fixing device is used for fixing the metal connecting ring on the rotating device;
the sand blasting device comprises a particle injection outlet and a dust collection port;
the control device is used for controlling the particle injection outlet to move so that the distance from the particle injection outlet to the corresponding coarsening point is a fixed value; and simultaneously controlling the motion of the dust collection opening to enable the angle between the air inlet direction of the dust collection opening and the sand blasting direction of the jet outlet to be 0-30 degrees.
6. The metal connecting ring roughening system of claim 5 wherein,
the sand blasting device also comprises a transverse expansion device and a longitudinal swinging device;
the transverse expansion device comprises a guide rail, a guide rod and a servo motor;
the longitudinal swinging device comprises an electronic cam mechanism;
the particle injection outlet and the dust collection port are connected with the guide rod through an electronic cam mechanism;
the transverse telescopic device realizes transverse reciprocating telescopic of the particle ejection outlet;
the longitudinal swinging device realizes swinging of the particle injection outlet within a certain angle range.
7. The metal connecting ring roughening system of claim 6 wherein,
the control device comprises an information acquisition unit, an information processing unit and an information output unit;
the information acquisition unit is used for acquiring output information of the rotating device, the transverse expansion device and the longitudinal swinging device and transmitting the equipment output information to the information processing unit;
the information processing unit processes the equipment output information through preset parameters and preset programs, and transmits the processed equipment input information to the information output unit;
the information output unit transmits the equipment input information to the rotating device, the transverse expansion device and the longitudinal swinging device, and commands the transverse expansion device to transversely reciprocate and expand and contract and the longitudinal swinging device to swing up and down.
8. The metal connecting ring roughening system of claim 7,
the equipment output information comprises rotation speed information and start-stop information of the rotation device, expansion speed information and expansion start-stop information of the transverse expansion device, swing angular speed information and swing start-stop information of the longitudinal swinging device, and one or more of the above information;
the device input information includes: the device comprises a rotating device, a transverse expansion device, a longitudinal swinging device, a vertical swinging device, a horizontal swinging device, a vertical swinging device and a horizontal swinging device, wherein the rotating device is provided with a rotating speed setting information, a rotating starting information and a rotating stopping information;
the preset program comprises a rotation starting program, a sand blasting starting and stopping program, a transverse telescopic starting and stopping program, a longitudinal swinging starting and stopping program and a spraying track calculating program;
the preset information parameters comprise rotation speed information in the rotation device, swing angular speed information omega of the longitudinal swinging device and alpha range information, wherein alpha is an included angle between a cam center connecting line from a particle injection outlet to an electronic cam mechanism and a vertical line from the particle injection outlet to a bonding surface of a metal ring, distance H information from the particle injection outlet to the surface of the bonding surface when alpha is 0, distance L information from the cam center of the electronic cam mechanism to the particle injection outlet and a telescopic rate calculation formula;
the calculation formula of the expansion rate v is as follows:
t/t=n … … m, α=ωm, v= (h+l), (1-cos α)/T when n is odd; alpha=90° - ωm when n is even; v= - (h+l), (1-cos α)/t;
the injection track calculation program comprises the set swing starting information and the set transverse expansion starting information which are started simultaneously, and calculates and outputs the set expansion rate which changes along with time according to a preset parameter and the expansion rate calculation formula.
9. The metal connecting ring roughening system according to claim 5, wherein the fixing means comprises a base (1), a pressing chuck (2), a sealing buffer (3), a fixing connector (4);
the compaction chuck is provided with a circular boss matched with the inner diameter of one end of the metal connecting ring in size, and a first through hole is formed in the boss;
the base (1) is arranged opposite to the compaction chuck (2), and two ends of the fixed connecting piece are respectively connected with the compaction chuck and the base.
10. The metal connecting ring roughening system of claim 5 wherein,
the distance between the particle injection outlet and the coarsening surface of the metal connecting ring is 50-100 mm;
when the surface of the bonding surface is continuously roughened at equal intervals, the angle between the air inlet direction of the dust collection opening and the sand blasting direction of the jet outlet is 0-30 degrees;
the distance between the dust collection opening and the roughened surface of the metal connecting ring is 450-600 mm;
the rotating speed of the metal connecting ring is 0.4-0.5 r/min;
the air outlet pressure of the particle jet outlet is 0.5-0.8 MPa, and the air flow of the particle jet outlet is 0.8-1.0 m 3 /min；
The moving distance of transverse expansion is 0-100 mm, and the up-down swinging angle is 85-100 degrees.
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| CN102259080A (en) * | 2010-05-25 | 2011-11-30 | 王安伟 | Mechanical spray-coating method for large annular part |
| CN204221628U (en) * | 2014-10-29 | 2015-03-25 | 四川成发航空科技股份有限公司 | For the frock clamp of aeronautical product ring-shaped work pieces shot-peening processing |
| JP7007087B2 (en) * | 2016-12-06 | 2022-01-24 | 三共理化学株式会社 | Blasting method and equipment for the inner surface of the pipe |
| CN107520762A (en) * | 2017-10-11 | 2017-12-29 | 重庆福税科技有限公司 | A kind of workpiece surface handles uniform environmental protection sand-blasting machine |
| WO2019136396A2 (en) * | 2018-01-08 | 2019-07-11 | Lam Research Corporation | Components and processes for managing plasma process byproduct materials |
| BE1026552B1 (en) * | 2018-08-20 | 2020-03-19 | Genr8 Bvba | Particle jet device |
| CN110181407B (en) * | 2019-05-30 | 2020-10-27 | 重庆大学 | Abrasive jet system for cutting down-hole casing and use method thereof |
| CN211073206U (en) * | 2019-06-22 | 2020-07-24 | 浙江硕克科技有限公司 | Stainless steel net yarn surface coarsening equipment |
| CN212947306U (en) * | 2020-08-19 | 2021-04-13 | 富乐德科技发展（天津）有限公司 | Sand blasting protection jig of clamp ring for semiconductor manufacturing process |
| CN112171517B (en) * | 2020-09-14 | 2021-11-09 | 杭州盾源聚芯半导体科技有限公司 | Method for processing outer surface of silicon ring |
| CN214490219U (en) * | 2020-12-21 | 2021-10-26 | 卡贝尼新材料科技(上海)有限公司 | Clamping ring processing protection jig |
| CN215510599U (en) * | 2021-04-20 | 2022-01-14 | 泰安泰山工程机械股份有限公司 | Sand blasting and rust removing workstation for pipeline joint coating operation |
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