CN113737239A - Liquid formula for preventing pressure sensor metal shell from being oxidized and treatment process - Google Patents
Liquid formula for preventing pressure sensor metal shell from being oxidized and treatment process Download PDFInfo
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- CN113737239A CN113737239A CN202111006047.5A CN202111006047A CN113737239A CN 113737239 A CN113737239 A CN 113737239A CN 202111006047 A CN202111006047 A CN 202111006047A CN 113737239 A CN113737239 A CN 113737239A
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- 239000007788 liquid Substances 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 58
- 230000008569 process Effects 0.000 title claims abstract description 45
- 239000002184 metal Substances 0.000 title claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 32
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 80
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 59
- 239000010935 stainless steel Substances 0.000 claims abstract description 59
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 40
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000005488 sandblasting Methods 0.000 claims abstract description 27
- 238000005507 spraying Methods 0.000 claims abstract description 21
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004327 boric acid Substances 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 230000001590 oxidative effect Effects 0.000 claims description 44
- 238000007747 plating Methods 0.000 claims description 43
- 230000003647 oxidation Effects 0.000 claims description 34
- 238000007254 oxidation reaction Methods 0.000 claims description 34
- 238000002360 preparation method Methods 0.000 claims description 34
- 238000003756 stirring Methods 0.000 claims description 26
- 230000009467 reduction Effects 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000010953 base metal Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 230000000536 complexating effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 239000008139 complexing agent Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 11
- 238000004381 surface treatment Methods 0.000 description 8
- 238000009713 electroplating Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000012669 liquid formulation Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
- B05B13/0228—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being rotative
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/20—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising
- B05B15/25—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising using moving elements, e.g. rotating blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/08—Electroplating with moving electrolyte e.g. jet electroplating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
Abstract
The invention discloses a liquid formula for preventing a pressure sensor metal shell from being oxidized and a treatment process, wherein the liquid formula is prepared from the following raw materials in parts by weight: 30g of citric acid with the concentration of 5 percent and 30g of boric acid with the concentration of 5 percent, the wet sand blasting storage tank is arranged, before the stainless steel shell is plated with nickel, the wet sand blasting storage tank is operated through a second conveying pump machine inside the wet sand blasting storage tank, the wet sand blasting in the wet sand blasting storage tank is sprayed on the surface of the stainless steel shell through a horizontal spraying pipe, so that the metal surface is clean, the defects of the metal surface are removed, and the bonding force of a coating is improved.
Description
Technical Field
The invention belongs to the technical field of surface treatment of a pressure sensor metal shell, and particularly relates to a liquid formula for preventing the pressure sensor metal shell from being oxidized and a treatment process.
Background
The metal shell of the pressure sensor with the temperature of minus 253 ℃ to plus 650 ℃ is widely applied to aerospace, ships, naval vessels and the like and is mainly used in the fields of pressure cylinders, superchargers, gas-liquid pressure cylinders, gas-liquid superchargers, presses, special detection and the like, the pressure sensor is characterized by being capable of resisting extremely low temperature and extremely high temperature and bearing gas pressure of more than 20MPa, and the metal shell needs to ensure good corrosion resistance and needs to carry out corrosion resistance treatment on the surface.
The pressure sensor adopts a stainless steel shell, a layer of compact oxide film is easily formed on the surface of the stainless steel shell, a nickel-plated layer cannot be well attached under the influence of the oxide film, the wettability of solder on the surface in the later period can be influenced, and the corrosion resistance and the sealing property of the shell are seriously influenced. Even if an effective mode is adopted to remove the oxidation layer, the surface of the stainless steel is easy to be oxidized again in the process of waiting for electroplating, and anti-oxidation liquid needs to be developed to ensure that the surface of the shell can be kept in a reduction state within a period of time and cannot be corroded.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the existing defects and provide a liquid formula and a treatment process for preventing the metal shell of the pressure sensor from being oxidized so as to solve the problem that the traditional stainless steel shell nickel plating layer proposed in the background technology cannot form good adhesion to influence the corrosion resistance and the sealing property of the shell.
In order to achieve the purpose, the invention provides the following technical scheme: a liquid formula for preventing oxidation of a steel shell after surface treatment is prepared from the following raw materials in parts by weight: 30g of 5% citric acid and 30g of 5% boric acid.
A liquid formula for preventing a pressure sensor metal shell from being oxidized and a treatment process thereof comprise the following steps:
the method comprises the following steps: preparing an oxidizing liquid in an oxidizing liquid preparation box, taking a certain amount of citric acid with the concentration of 5% and boric acid with the concentration of 5%, and stirring the citric acid and the boric acid in a mixing and stirring manner to obtain the oxidizing liquid;
step two: after the oxidizing liquid is prepared, coarsening treatment is carried out in oxide treatment equipment by a wet sand blasting method, an oxide film on the surface is broken, the surface area is increased, the binding force of a coating is improved, and then complexing agent and oxide are utilized to form complexing radicals at a certain higher temperature, so that the purpose of removing the oxide is achieved;
step three: before nickel plating, spraying an oxidizing liquid to the stainless steel shell by an oxidizing liquid preparation box to prevent the stainless steel shell from being oxidized in the nickel plating process, and then carrying out nickel plating treatment on the stainless steel shell;
step four: taking out the stainless steel shell after nickel plating, using a tenfold magnifier to check the color change condition at the finger bonding area, the surface of the sealing ring or the external lead, using a steel knife to scratch the surface of the plating layer by a steel knife scratch method until reaching the base metal, and detecting the nickel plating effect of the shell;
step five: and recording the detection result, comparing the data and obtaining a final result.
A liquid formula for preventing a pressure sensor metal shell from being oxidized and a treatment process are disclosed, wherein an oxide treatment device is arranged on one side of the upper surface of a shell treatment device, an oxidized liquid preparation box and a shell reduction box are respectively arranged on two sides inside the shell treatment device, a first conveying pump is arranged on one side inside the oxidized liquid preparation box, the lower end of the first conveying pump is connected with an suction pipe, the suction pipe is arranged at the bottom end inside the oxidized liquid preparation box, a first conveying pipe is connected to the outer side of the first conveying pump, the other end of the first conveying pipe is arranged on the upper surface of the oxidized liquid shower, one side of the oxidized liquid shower is fixedly connected to the side edge of a moving ring, the moving ring is arranged inside a straight arm ball screw in a penetrating manner, the lower end of the straight arm ball screw is connected with a driving motor in a transmission manner, and two ends of the other side of the moving ring are both fixedly connected with limiting sliders, the limiting slide block is arranged in a limiting sliding groove in the side edge of the reduction box of the shell, the upper surface of the shell treatment equipment is provided with a wet sand blasting storage tank, a second conveying pump machine is arranged inside the wet sand blasting storage tank, the lower end of the second conveying pump machine is connected with a second conveying pipe, the outer side of the conveying pump machine is connected with a connecting pipe, the other end of the connecting pipe is connected to the side edge of the horizontal spraying pipe, and the horizontal spraying pipe is arranged at the upper end of the oxide treatment equipment.
Preferably, the outer side surface of the oxide treatment equipment is fixedly connected with a supporting platform, the upper surface of the supporting platform is provided with a driving motor, the upper end of the driving motor is in transmission connection with a connecting belt, a rotating shaft is sleeved inside the other end of the connecting belt, and the rotating shaft penetrates through the rotating track.
Preferably, the bottom end of the interior of the reduction box of the shell is fixedly connected with a support frame, the upper surface of the support frame is connected with two rotary sliding blocks through a circular sliding groove in a sliding mode, the upper ends of the rotary sliding blocks are arranged on the lower surface of a rotary disc through connecting rods, a connecting shaft is arranged in the middle of the upper surface of the support frame, the upper end of the connecting shaft is arranged on the lower surface of the rotary disc, and the lower end of the connecting shaft is connected with a driving motor in a transmission mode.
Preferably, the bottom end in the oxidation liquid preparation box is rotatably connected with a stirring shaft, the surface of the stirring shaft is provided with a plurality of stirring fan blades, the upper end of the stirring shaft is in transmission connection with a driving motor, and the driving motor is arranged in a fixing ring.
Preferably, one side in the reduction box of the shell is provided with a hydraulic device, two ends of the outer side of the hydraulic device are connected with a nickel plating device through hydraulic rods, and the surface of the other side of the nickel plating device is provided with a plurality of nickel plating external connection nozzles.
Preferably, casing treatment facility one side upper end fixedly connected with bracing piece, bracing piece upper end one side fixedly connected with telescopic link, the telescopic link other end sets up at solid fixed ring side.
Preferably, heating devices are arranged on two opposite sides in the reduction box of the shell, and the two heating devices are respectively arranged on two sides of the rotating disc. The rotating crawler belt is characterized in that a plurality of slag discharge holes are formed in the upper surface of the rotating crawler belt, and pulleys are arranged at four corners of the lower surface of the shell processing equipment.
Preferably, both sides of the upper surface of the oxide treatment equipment are fixedly connected with fixing frames, and a horizontal spraying pipe is arranged between the two fixing frames.
Compared with the prior art, the invention provides a liquid formula for preventing the metal shell of the pressure sensor from being oxidized and a treatment process, and the liquid formula has the following beneficial effects:
1. the invention sprays the wet sand blasting in the wet sand blasting storage tank on the surface of the stainless steel shell through the horizontal spraying pipe by the operation of the conveying pump II in the wet sand blasting storage tank before the stainless steel shell is plated with nickel through the arranged wet sand blasting storage tank, so that the metal surface is clean, the defects on the metal surface are removed, the bonding force of a coating is improved, and the prepared box is provided with the oxidizing liquid, after the oxidizing liquid is prepared in the oxidizing liquid preparation box, the oxidizing liquid in the oxidizing liquid preparation box is sprayed on the surface of the stainless steel shell from the oxidizing liquid sprinkler through the operation of a conveying pump in the oxidizing liquid preparation box, under the rotation action of the straight arm ball screw, the oxidizing liquid can be sprayed on the surfaces of different stainless steel shells, the two modes are combined, so that the subsequent oxidation phenomenon can be prevented, and the nickel-plated layer can be well attached to the surface of the stainless steel shell;
2. according to the invention, through the arranged connecting belt, under the action of the driving motor at the upper end of the supporting platform, the connecting belt can be rotated, and the rotating shaft can be rotated when the connecting belt rotates, so that the rotating crawler belt can be rotated, on one hand, different positions of a stainless steel shell in the oxide treatment equipment can be contacted with wet sand blasting, the rough treatment effect on the surface of the stainless steel shell is increased, on the other hand, the treated stainless steel shell can be guided into the shell treatment equipment, and the subsequent treatment process is convenient to realize;
3. according to the invention, through the arranged rotating disc, the rotating disc can be rotated under the action of the driving motor at the lower end of the rotating disc, a plurality of stainless steel shells on the upper surface of the rotating disc can be rotated in the rotating process of the rotating disc, the stainless steel shells can be sprayed in all directions in the spraying process of oxidizing liquid, and through the arranged heating equipment, the stainless steel shells can be in a high-temperature condition through the operation of the heating equipment in the spraying process of the oxidizing liquid, so that the complexing reaction condition is achieved;
4. through the arranged stirring shaft and the stirring fan blades, in the preparation process of the oxidation liquid, the stirring shaft and the stirring fan blades can rotate under the action of the driving motor at the upper end of the stirring shaft, so that the citric acid and the boric acid in the oxidation liquid preparation box are stirred, and the effect of preparing the oxidation liquid is achieved;
5. according to the invention, through the arranged hydraulic equipment, under the action of the hydraulic equipment, the hydraulic rod outside the hydraulic equipment can drive the nickel plating equipment to move so as to realize the contact between the nickel plating equipment and the stainless steel shell, and then the stainless steel shell after oxidation treatment is subjected to electroplating treatment through the plurality of nickel plating external connection nozzles outside the nickel plating equipment, so that the electroplating effect on the stainless steel shell is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
FIG. 1 is a schematic structural diagram of a liquid formulation and treatment process for preventing oxidation of a steel shell after surface treatment according to the present invention;
FIG. 2 is a cross-sectional view of the liquid formulation and treatment process for preventing oxidation of the steel shell after surface treatment in accordance with the present invention;
FIG. 3 is an enlarged view of A in FIG. 2 illustrating the formula of the liquid for preventing the oxidation of the steel shell after the surface treatment and the treatment process according to the present invention;
FIG. 4 is a top view of the liquid formulation for preventing oxidation of the steel casing after surface treatment and the rotating track in the treatment process according to the present invention;
FIG. 5 is a process flow diagram of the liquid formulation and treatment process for preventing oxidation of the steel shell after surface treatment in accordance with the present invention;
in the figure: 1. a housing handling device; 2. an oxide treatment device; 3. a wet blasting storage tank; 4. a support bar; 5. a telescopic rod; 6. a fixing ring; 7. a stirring shaft; 8. a stirring fan blade; 9. an oxidizing liquid preparation tank; 10. a first conveying pump machine; 11. a suction pipe; 12. a first conveying pipe; 13. a shell reduction box; 14. a straight arm ball screw; 15. a moving ring; 16. oxidizing the liquid shower; 17. a support frame; 18. rotating the slide block; 19. a connecting rod; 20. rotating the disc; 21. a connecting shaft; 22. a hydraulic device; 23. a hydraulic lever; 24. nickel plating equipment; 25. a nickel plating external connection nozzle; 26. a heating device; 27. a limiting chute; 28. a limiting slide block; 29. a second conveying pump machine; 30. a second conveying pipe; 31. a connecting pipe; 32. a fixed mount; 33. spraying a horizontal pipe; 34. a connecting belt; 35. a rotating shaft; 36. rotating the caterpillar; 37. a slag discharge hole; 38. and supporting the platform.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-5, a liquid formula and a treatment process for preventing oxidation of a metal shell of a pressure sensor, wherein an oxide treatment device 2 is arranged on one side of the upper surface of a shell treatment device 1, an oxidation liquid preparation box 9 and a shell reduction box 13 are respectively arranged on two sides inside the shell treatment device 1, a first delivery pump 10 is arranged on one side inside the oxidation liquid preparation box 9, the lower end of the first delivery pump 10 is connected with a suction pipe 11, the suction pipe 11 is arranged at the bottom inside the oxidation liquid preparation box 9, the outer side of the first delivery pump 10 is connected with a first delivery pipe 12, the other end of the first delivery pipe 12 is arranged on the upper surface of an oxidation liquid sprinkler 16, one side of the oxidation liquid sprinkler 16 is fixedly connected to the side of a moving ring 15, the moving ring 15 is arranged inside a straight arm ball screw 14 in a penetrating manner, the lower end of the straight arm ball screw 14 is connected with a driving motor in a transmission manner, and two ends of the other side of the moving ring 15 are both fixedly connected with a limiting slide block 28, the limiting slide block 28 is arranged in a limiting slide groove 27 at the side edge of the shell reduction box 13, the wet sand blasting storage tank 3 is arranged on the upper surface of the shell processing equipment 1, the second conveying pump machine 29 is arranged inside the wet sand blasting storage tank 3, the lower end of the second conveying pump machine 29 is connected with the second conveying pipe 30, the outer side of the second conveying pump machine 29 is connected with the connecting pipe 31, the other end of the connecting pipe 31 is connected to the side edge of the horizontal spraying pipe 33, the horizontal spraying pipe 33 is arranged at the upper end of the oxide processing equipment 2, the wet sand blasting storage tank 3 is operated through the second conveying pump machine 29 inside the wet sand blasting storage tank 3, the wet sand blasting in the wet sand blasting storage tank 3 is sprayed on the surface of the stainless steel shell through the horizontal spraying pipe 33, the metal surface is clean, the metal surface defects are removed, the coating binding force is improved, after the stainless steel shell is roughly processed, the stainless steel shell is directly discharged onto the surface of the rotating disc 20 through the rotating crawler 36, and the first conveying pump machine 10 inside the oxidizing liquid preparation box 9 is operated, the oxidizing liquid in the oxidizing liquid preparation box 9 is sprayed on the surface of the stainless steel shell from the oxidizing liquid shower head 16, and under the rotating action of the straight-arm ball screw 14, the oxidizing liquid can be sprayed on the surfaces of different stainless steel shells, and the subsequent oxidation phenomenon can be prevented by combining the two modes, so that the nickel-plated layer can be well attached to the surface of the stainless steel shell.
Preferably, the inside bottom fixedly connected with support frame 17 of casing reduction box 13, support frame 17 upper surface has two rotary slide block 18 through circular spout sliding connection, rotary slide block 18 upper end is passed through connecting rod 19 and is set up at rotating disc 20 lower surface, be provided with connecting axle 21 in the middle of the support frame 17 upper surface, connecting axle 21 upper end sets up at rotating disc 20 lower surface, the transmission of connecting axle 21 lower extreme is connected with driving motor, under the effect of rotating disc 20 lower extreme driving motor, can make rotating disc 20 rotatory, at rotating disc 20 rotatory in-process, can make a plurality of stainless steel casings of rotating disc 20 upper surface rotate, spray the in-process at the oxidation liquid, can spray the stainless steel casing omnidirectional to the realization.
Example two:
referring to fig. 1-5, the present invention provides the following technical solutions: a liquid formula for preventing oxidation of a steel shell after surface treatment is prepared from the following raw materials in parts by weight: 30g of 5% citric acid and 30g of 5% boric acid.
A liquid formula for preventing a pressure sensor metal shell from being oxidized and a treatment process thereof comprise the following steps:
the method comprises the following steps: preparing an oxidizing liquid in an oxidizing liquid preparation box 9, taking a certain amount of citric acid with the concentration of 5% and boric acid with the concentration of 5%, and stirring the citric acid and the boric acid in a mixing and stirring manner to obtain the oxidizing liquid;
step two: after the oxidizing liquid is prepared, the oxidizing liquid is coarsened in the oxide treatment equipment 2 by a wet sand blasting method, so that an oxide film on the surface is broken, the surface area is increased, the binding force of a coating is improved, and then complexing radicals are formed by a complexing agent and an oxide at a certain higher temperature to achieve the purpose of removing the oxide;
step three: before nickel plating, spraying oxidizing liquid to the stainless steel shell by an oxidizing liquid preparation box 9 to prevent the stainless steel shell from being oxidized in the nickel plating process, and then carrying out nickel plating treatment on the stainless steel shell;
step four: taking out the stainless steel shell after nickel plating, using a tenfold magnifier to check the color change condition at the finger bonding area, the surface of the sealing ring or the external lead, using a steel knife to scratch the surface of the plating layer by a steel knife scratch method until reaching the base metal, and detecting the nickel plating effect of the shell;
step five: and recording the detection result, comparing the data and obtaining a final result.
In the invention, preferably, a liquid formula for preventing a pressure sensor metal shell from being oxidized and a treatment process are provided, an oxide treatment device 2 is arranged on one side of the upper surface of a shell treatment device 1, an oxidized liquid preparation box 9 and a shell reduction box 13 are respectively arranged on two sides inside the shell treatment device 1, a first conveying pump 10 is arranged on one side inside the oxidized liquid preparation box 9, the lower end of the first conveying pump 10 is connected with an suction pipe 11, the suction pipe 11 is arranged at the bottom end inside the oxidized liquid preparation box 9, the outer side of the first conveying pump 10 is connected with a first conveying pipe 12, the other end of the first conveying pipe 12 is arranged on the upper surface of an oxidized liquid shower head 16, one side of the oxidized liquid shower head 16 is fixedly connected to the side of a moving ring 15, the moving ring 15 penetrates through the straight arm ball screw 14, the lower end of the straight arm ball screw 14 is in transmission connection with a driving motor, and two ends of the other side of the moving ring 15 are both fixedly connected with a limiting slide block 28, the limiting slide block 28 is arranged in a limiting sliding groove 27 in the side edge of the shell reduction box 13, the wet sand blasting storage tank 3 is arranged on the upper surface of the shell processing equipment 1, a second conveying pump machine 29 is arranged inside the wet sand blasting storage tank 3, the lower end of the second conveying pump machine 29 is connected with a second conveying pipe 30, the outer side of the second conveying pump machine 29 is connected with a connecting pipe 31, the other end of the connecting pipe 31 is connected to the side edge of a horizontal spraying pipe 33, and the horizontal spraying pipe 33 is arranged at the upper end of the oxide processing equipment 2.
In the present invention, preferably, the outer surface of the oxide treatment device 2 is fixedly connected with a supporting platform 38, the upper surface of the supporting platform 38 is provided with a driving motor, the upper end of the driving motor is connected with a connecting belt 34 in a transmission manner, the other end of the connecting belt 34 is sleeved with a rotating shaft 35, and the rotating shaft 35 penetrates through the rotating crawler 36.
In the invention, preferably, the bottom end inside the reduction box 13 of the casing is fixedly connected with a support frame 17, the upper surface of the support frame 17 is slidably connected with two rotary sliding blocks 18 through a circular sliding chute, the upper ends of the rotary sliding blocks 18 are arranged on the lower surface of a rotary disc 20 through a connecting rod 19, a connecting shaft 21 is arranged in the middle of the upper surface of the support frame 17, the upper end of the connecting shaft 21 is arranged on the lower surface of the rotary disc 20, and the lower end of the connecting shaft 21 is in transmission connection with a driving motor.
In the invention, preferably, the bottom end inside the oxidizing liquid preparation box 9 is rotatably connected with a stirring shaft 7, the surface of the stirring shaft 7 is provided with a plurality of stirring fan blades 8, the upper end of the stirring shaft 7 is in transmission connection with a driving motor, the driving motor is arranged inside the fixing ring 6, one side inside the shell reduction box 13 is provided with a hydraulic device 22, two ends outside the hydraulic device 22 are connected with a nickel plating device 24 through hydraulic rods 23, and the other side surface of the nickel plating device 24 is provided with a plurality of nickel plating external connection nozzles 25.
In the invention, preferably, the upper end of one side of the shell treatment device 1 is fixedly connected with a support rod 4, one side of the upper end of the support rod 4 is fixedly connected with a telescopic rod 5, the other end of the telescopic rod 5 is arranged at the side of the fixed ring 6, heating devices 26 are arranged at two opposite sides in the shell reduction box 13, and the two heating devices 26 are respectively arranged at two sides of the rotating disc 20. The upper surface of the rotating crawler 36 is provided with a plurality of slag discharge holes 37, four corners of the lower surface of the shell treatment equipment 1 are provided with pulleys, two sides of the upper surface of the oxide treatment equipment 2 are fixedly connected with fixing frames 32, and a horizontal spraying pipe 33 is arranged between the two fixing frames 32.
The working principle and the using process of the invention are as follows: when in use, firstly preparing oxidation liquid, placing a certain amount of citric acid with the concentration of 5% and boric acid with the concentration of 5% in an oxidation liquid preparation box 9, enabling a stirring shaft 7 and stirring fan blades 8 to rotate under the action of a driving motor at the upper end of the stirring shaft 7, stirring the citric acid and the boric acid in the oxidation liquid preparation box 9, thereby achieving the effect of preparing the oxidation liquid, after the preparation of the oxidation liquid is finished, placing a stainless steel shell in an oxide treatment device 2, enabling a connecting belt 34 to rotate under the action of the driving motor at the upper end of a supporting platform 38, enabling a rotating shaft 35 to rotate when the connecting belt 34 rotates, enabling a rotating crawler 36 to rotate, enabling different positions of the stainless steel shell in the oxide treatment device 2 to be in contact with wet sand blasting on one hand, increasing the rough treatment effect on the surface of the stainless steel shell, and on the other hand guiding the treated stainless steel shell into a shell treatment device 1, the subsequent treatment process is convenient to realize, in the moving process of the stainless steel shell, the second conveying pump 29 in the wet sand blasting storage tank 3 operates to spray wet sand blasting in the wet sand blasting storage tank 3 on the surface of the stainless steel shell through the transverse spraying pipe 33, so that the metal surface is clean, the defects on the metal surface are removed, the binding force of a coating is improved, after the stainless steel shell is roughly treated, the stainless steel shell is directly discharged onto the surface of the rotating disc 20 through the rotating crawler 36, the first conveying pump 10 in the oxidizing liquid preparation box 9 operates to spray oxidizing liquid in the oxidizing liquid preparation box 9 onto the surface of the stainless steel shell from the oxidizing liquid shower head 16, under the rotating action of the straight arm ball screw 14, the oxidizing liquid can be sprayed onto different surfaces of the stainless steel shell, the subsequent oxidation phenomenon can be prevented by combining the two modes, so that the coating is well adhered to the surface of the stainless steel shell, under the action of a driving motor at the lower end of the rotating disc 20, the rotating disc 20 can rotate, in the rotating process of the rotating disc 20, a plurality of stainless steel shells on the upper surface of the rotating disc 20 can rotate, in the spraying process of oxidizing liquid, the stainless steel shells can be sprayed in all directions, in the spraying process of the oxidizing liquid, the stainless steel shells can be in a high-temperature condition through the operation of the heating device 26, so that the complex reaction condition is achieved, after the reaction is finished, under the action of the hydraulic device 22, the hydraulic rod 23 on the outer side of the hydraulic device 22 can drive the nickel plating device 24 to move, so that the nickel plating device 24 is in contact with the stainless steel shells, then the stainless steel shells after the oxidation treatment are subjected to electroplating treatment through a plurality of nickel plating external connecting nozzles 25 on the outer side of the nickel plating device 24, so that the electroplating effect on the stainless steel shells is achieved, and then the stainless steel shells after the nickel plating are taken out, and (3) checking the color change condition at the finger bonding area, the surface of the sealing ring or the external lead by using a tenfold magnifier, scratching the surface of the plating layer by using a steel knife through a steel knife scratching method until the plating layer reaches the base metal, and detecting the nickel plating effect of the shell.
The practical experimental results of nickel plating after oxidation of five groups of stainless steel shells are combined to be expressed
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A liquid formula for preventing a pressure sensor metal shell from being oxidized is characterized in that: the feed is prepared from the following raw materials in weight grams: 30g of 5% citric acid and 30g of 5% boric acid.
2. A treatment process for preventing a pressure sensor metal shell from being oxidized is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: preparing an oxidizing liquid in an oxidizing liquid preparation box (9), taking a certain amount of citric acid with the concentration of 5% and boric acid with the concentration of 5%, and stirring the citric acid and the boric acid in a mixing and stirring manner to obtain the oxidizing liquid;
step two: after the oxidizing liquid is prepared, coarsening treatment is carried out in the oxide treatment equipment (2) by a wet sand blasting method, an oxide film on the surface is broken, the surface area is increased, the binding force of a coating is improved, and then complexing groups are formed by a complexing agent and an oxide at a certain higher temperature to achieve the purpose of removing the oxide;
step three: before nickel plating, spraying oxidizing liquid to the stainless steel shell by an oxidizing liquid preparation box (9) to prevent the stainless steel shell from being oxidized in the nickel plating process, and then carrying out nickel plating treatment on the stainless steel shell;
step four: taking out the stainless steel shell after nickel plating, using a tenfold magnifier to check the color change condition at the finger bonding area, the surface of the sealing ring or the external lead, using a steel knife to scratch the surface of the plating layer by a steel knife scratch method until reaching the base metal, and detecting the nickel plating effect of the shell;
step five: and recording the detection result, comparing the data and obtaining a final result.
3. The process of claim 2, wherein the metal shell of the pressure sensor is treated to prevent oxidation, and wherein the treatment comprises: the oxide treatment equipment (2) is arranged on one side of the upper surface of the shell treatment equipment (1), the two sides inside the shell treatment equipment (1) are respectively provided with an oxidized liquid preparation box (9) and a shell reduction box (13), one side inside the oxidized liquid preparation box (9) is provided with a first conveying pump (10), the lower end of the first conveying pump (10) is connected with an intake pipe (11), the intake pipe (11) is arranged at the bottom inside the oxidized liquid preparation box (9), the outer side of the first conveying pump (10) is connected with a first conveying pipe (12), the other end of the first conveying pipe (12) is arranged on the upper surface of an oxidized liquid shower head (16), one side of the oxidized liquid shower head (16) is fixedly connected to the side of a moving ring (15), the moving ring (15) is arranged inside a straight arm ball screw (14) in a penetrating manner, and the lower end of the straight arm ball screw (14) is connected with a driving motor in a transmission manner, move equal fixedly connected with stop block (28) in ring (15) opposite side both ends, stop block (28) set up in the spacing spout (27) of casing reduction box (13) side, casing treatment facility (1) upper surface is provided with wet sandblast holding vessel (3), wet sandblast holding vessel (3) inside is provided with delivery pump machine two (29), delivery pump machine two (29) lower extreme is connected with conveyer pipe two (30), the delivery pump machine two (29) outside is connected with connecting pipe (31), connecting pipe (31) other end is connected and is being sprayed violently pipe (33) side, it sets up in oxide treatment facility (2) upper end to spray violently pipe (33).
4. The process of claim 3, wherein the metal shell of the pressure sensor is treated by a treatment process comprising: oxide treatment facility (2) outside fixed surface is connected with supporting platform (38), supporting platform (38) upper surface is provided with driving motor, driving motor upper end transmission is connected with connecting band (34), connecting band (34) other end inside has cup jointed axis of rotation (35), axis of rotation (35) run through the setting inside rotating track (36).
5. The process of claim 4, wherein the metal shell of the pressure sensor is treated by a treatment process comprising: casing reduction box (13) inside bottom fixedly connected with support frame (17), support frame (17) upper surface has two rotatory slider (18) through circular spout sliding connection, rotatory slider (18) upper end is passed through connecting rod (19) and is set up at rotation disc (20) lower surface, be provided with connecting axle (21) in the middle of support frame (17) upper surface, connecting axle (21) upper end sets up at rotation disc (20) lower surface, connecting axle (21) lower extreme transmission is connected with driving motor.
6. The process of claim 5, wherein the metal shell of the pressure sensor is treated by a treatment process comprising: the bottom in oxidation liquid preparation case (9) is rotated and is connected with (mixing) shaft (7), (mixing) shaft (7) surface is provided with a plurality of stirring fan blades (8), the transmission of (mixing) shaft (7) upper end is connected with driving motor, driving motor sets up inside solid fixed ring (6).
7. The process of claim 6, wherein the metal shell of the pressure sensor is treated by a treatment process comprising: the shell reduction box is characterized in that a hydraulic device (22) is arranged on one side inside the shell reduction box (13), two ends of the outer side of the hydraulic device (22) are connected with a nickel plating device (24) through hydraulic rods (23), and a plurality of nickel plating external connection nozzles (25) are arranged on the surface of the other side of the nickel plating device (24).
8. The process of claim 3, wherein the metal shell of the pressure sensor is treated by a treatment process comprising: casing treatment facility (1) one side upper end fixedly connected with bracing piece (4), bracing piece (4) upper end one side fixedly connected with telescopic link (5), the telescopic link (5) other end sets up at solid fixed ring (6) side.
9. The process of claim 8, wherein the step of treating the metal shell of the pressure sensor to prevent oxidation comprises: heating devices (26) are arranged on two opposite sides in the shell reduction box (13), and the two heating devices (26) are respectively arranged on two sides of the rotating disc (20); the upper surface of the rotating crawler belt (36) is provided with a plurality of slag discharge holes (37), and four corners of the lower surface of the shell processing equipment (1) are provided with pulleys.
10. The process of claim 9, wherein the step of treating the metal shell of the pressure sensor to prevent oxidation comprises: both sides of the upper surface of the oxide treatment equipment (2) are fixedly connected with fixing frames (32), and a horizontal spraying pipe (33) is arranged between the two fixing frames (32).
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