CN110695000A - Ultrasonic cleaning process for welded stainless steel hydraulic hard tube - Google Patents
Ultrasonic cleaning process for welded stainless steel hydraulic hard tube Download PDFInfo
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- CN110695000A CN110695000A CN201810753088.2A CN201810753088A CN110695000A CN 110695000 A CN110695000 A CN 110695000A CN 201810753088 A CN201810753088 A CN 201810753088A CN 110695000 A CN110695000 A CN 110695000A
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- cleaning
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- welding
- straight pipe
- pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses an ultrasonic cleaning process for a welded stainless steel hydraulic hard tube, which comprises the following steps: 1) blanking a straight pipe, and then immersing the straight pipe in an oil removing and degreasing solution of an ultrasonic oil removing groove for cleaning; 2) after the straight pipe is cleaned, bending the straight pipe, and trimming the bent pipe length and the bent groove; 3) spot welding the trimmed bent straight pipe and the connector body, and welding to manufacture a hard pipe; 4) after the welding of the bent straight pipe and the joint body in the step 3) is finished, observing welding oxide skin at the welding part of the inner wall by using a camera, and cleaning the welding oxide skin by adopting an ultrasonic groove type partial immersion method; 5) and finishing the cleaning of the welding part to finish the manufacturing and cleaning of the hard tube assembly. The method comprises the following steps of dividing the cleaning of the hard pipe into two times of straight pipe cleaning and welding line cleaning, and respectively carrying out key cleaning; the straight pipe cleaning adopts an ultrasonic groove type complete immersion method, and the welding line cleaning adopts an ultrasonic groove type partial immersion method, so that the cleaning quality and efficiency are improved.
Description
Technical Field
The invention belongs to the technical field of ultrasonic cleaning, and particularly relates to an ultrasonic cleaning process for a welded stainless steel hydraulic hard tube.
Background
Welded stainless steel hydraulic hard tube is formed by bending fashioned pipe and the welding of the joint body at both ends, and the cover is equipped with outer nut simultaneously on the joint body, and its structure is shown in figure 1, and hydraulic pipeline washs and all adopts traditional slot type cleaning method or intraductal circulation cleaning method two kinds at present, traditional slot type cleaning method: completely soaking the hard tube assembly in different cleaning solutions in a cleaning tank
And removing the excess on the inner wall of the pipeline. And (3) a pipe internal circulation cleaning method: connecting the hard pipe assembly by a connector to form a cleaning loop, and pumping different cleaning solutions into the loop by a pressure pump for circular cleaning.
The two cleaning technologies have the following defects: (1) the groove type cleaning method is only suitable for short pipes and straight pipes with larger pipe diameters
For a hard pipe assembly which is complicated to bend and large in space size, the hard pipe assembly cannot be completely immersed by a solution in a cleaning pool and cannot be thoroughly cleaned; (2) the pipe internal circulation cleaning method is suitable for cleaning the hard pipe assembly during repair and maintenance after the hard pipe assembly is used for a certain period. The newly manufactured hard pipe assembly needs to be intensively cleaned by different cleaning solutions because the types and the distribution parts of the produced excess materials in each production stage are different from those of the repaired hard pipe assembly, each part is not separated by a circular cleaning method, and the hard cleaning parts such as welding joints and the like cannot be intensively cleaned in the cleaning process, and meanwhile, when the welding excess materials at the welding joints are cleaned, the used acid solution can corrode the guide pipe to different degrees.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an ultrasonic cleaning process for a welded stainless steel hydraulic hard tube.
In order to solve the technical problems, the invention adopts the technical scheme that: a welding type ultrasonic cleaning process for a stainless steel hydraulic hard tube comprises the following steps:
1) the straight pipe is fed, and then the straight pipe is immersed in the degreasing solution of the ultrasonic degreasing tank for cleaning, and the solution formula in the ultrasonic groove type complete immersion method is as follows: the mass volume concentration of sodium hydroxide is 35-50 g/L, the mass volume concentration of trisodium phosphate is 20-30 g/L, the mass volume concentration of sodium carbonate is 55-75 g/L, the mass volume concentration of sodium silicate is 3-5 g/L, and the operating conditions are as follows: the temperature of the solution is 600-900 ℃, the ultrasonic power is less than or equal to 20KW, and the solution lasts for a long time to remove the grease and oil stains completely;
2) after the straight pipe is cleaned, bending the straight pipe, and trimming the bent pipe length and the bent groove;
3) spot welding the trimmed bent straight pipe and the connector body, and welding to manufacture a hard pipe;
4) after the welding of the bent straight pipe and the joint body in the step 3) is finished, observing a welding oxide skin at the welding position of the inner wall by using a camera, cleaning the welding oxide skin by adopting an ultrasonic groove type partial immersion method, wherein the solution formula in the ultrasonic groove type partial immersion method is as follows: the mass volume concentration of nitric acid is 60-80 g/L, the mass volume concentration of sulfuric acid is 78-85 g/L, the mass volume concentration of hydrofluoric acid is 20-25 g/L, the mass volume concentration of sulfonated coal is 1.0-1.5 g/L, and the balance is water, wherein the operation conditions are as follows: the temperature of the solution is the same as the room temperature, the ultrasonic power is less than or equal to 20KW, and the duration is 30-50 min;
5) and finishing the cleaning of the welding part to finish the manufacturing and cleaning of the hard tube assembly.
Preferably, the solution formulation in the ultrasonic tank-type partial immersion method should be appropriately shortened in duration or controlled to a predetermined lower limit in order to prevent the occurrence of the over-corrosion phenomenon when newly prepared and used.
Preferably, the solution in the ultrasonic bath type partial immersion method can be used to completely remove scale by properly extending the pickling time according to the working efficiency of the solution without causing an excessive corrosion phenomenon.
Compared with the prior art, the invention has the beneficial effects that: according to the method, the types and the distribution positions of the redundancies generated in different stages in the manufacturing process of the hard pipe are analyzed to be different, the hard pipe cleaning is divided into two times of straight pipe cleaning and welding line cleaning, and key cleaning is respectively carried out; the straight pipe cleaning adopts an ultrasonic groove type complete immersion method, the welding line cleaning adopts an ultrasonic groove type partial immersion method, and the chemical action of the cleaning solution in the groove and the vibration action of ultrasonic waves are utilized to rapidly peel off the excess attached to the surface of the pipe, so that the cleaning quality and efficiency are improved.
Drawings
FIG. 1 is a schematic structural diagram of a hard tube assembly;
FIG. 2 is a flow chart of a straight pipe cleaning process of the present invention;
FIG. 3 is a flow chart of the weld cleaning process of the present invention.
Detailed Description
So that those skilled in the art can better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
A welding type ultrasonic cleaning process for a stainless steel hydraulic hard tube comprises the following steps:
1) the straight pipe is fed, and then the straight pipe is immersed in the degreasing solution of the ultrasonic degreasing tank for cleaning, and the solution formula in the ultrasonic groove type complete immersion method is as follows: the mass volume concentration of sodium hydroxide is 35-50 g/L, the mass volume concentration of trisodium phosphate is 20-30 g/L, the mass volume concentration of sodium carbonate is 55-75 g/L, the mass volume concentration of sodium silicate is 3-5 g/L, and the operating conditions are as follows: the temperature of the solution is 600-900 ℃, the ultrasonic power is less than or equal to 20KW, and the solution lasts for a long time to remove the grease and oil stains completely;
2) after the straight pipe is cleaned, bending the straight pipe, and trimming the bent pipe length and the bent groove;
3) spot welding the trimmed bent straight pipe and the connector body, and welding to manufacture a hard pipe as shown in figure 1;
4) after the welding of the bent straight pipe and the joint body in the step 3) is finished, observing a welding oxide skin at the welding position of the inner wall by using a camera, cleaning the welding oxide skin by adopting an ultrasonic groove type partial immersion method, wherein the solution formula in the ultrasonic groove type partial immersion method is as follows: the mass volume concentration of nitric acid is 60-80 g/L, the mass volume concentration of sulfuric acid is 78-85 g/L, the mass volume concentration of hydrofluoric acid is 20-25 g/L, the mass volume concentration of sulfonated coal is 1.0-1.5 g/L, and the balance is water, wherein the operation conditions are as follows: the temperature of the solution is the same as the room temperature, the ultrasonic power is less than or equal to 20KW, and the duration is 30-50 min;
5) and finishing the cleaning of the welding part to finish the manufacturing and cleaning of the hard tube assembly.
The solution formula in the ultrasonic groove type partial immersion method should be properly shortened in duration or controlled at a specified time lower limit when newly prepared for use so as not to generate an over-corrosion phenomenon.
Under the condition that the solution in the ultrasonic groove type partial immersion method does not generate over-corrosion phenomenon, the pickling time can be properly prolonged according to the working efficiency of the solution so as to thoroughly remove oxide skin.
According to the above cleaning process, after the straight pipe is degreased by ultrasonic waves, the excess on the inner wall of the straight pipe also includes external dust and solid particles formed by water entering the inner wall of the straight pipe, so a series of processes are required to be performed as shown in fig. 2 to remove the excess of dust and solid particles until the inner wall of the straight pipe is completely clean. Similarly, in addition to the ultrasonic pickling, the weld joint is subjected to a series of cleaning processes as shown in fig. 3 to remove other excess materials until it is completely clean.
All hard tube assemblies in a hydraulic system pipeline of a certain type of product are selected as implementation objects, and the method is characterized in that: multiple specification and number
The quantity is large, most of the catheter is an elongated tube, and the catheter has complex three-dimensional space size and shape after being bent. According to the invention
The technical scheme is manufacturing and cleaning.
Ultrasonic cleaning of straight pipe
And placing the straight pipe to be cleaned in a special cleaning frame and completely soaking the straight pipe in an oil removing and degreasing solution of the ultrasonic cleaning tank for cleaning.
Secondly, ultrasonic cleaning of welding seams
Only the welded joint part is soaked in the pickling solution of the ultrasonic cleaning tank for cleaning. After the welding seam is cleaned, the cleaning effect is detected, and the detection instrument is used: PXLM620BSCPALSYS portable special video endoscope system.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (4)
1. The ultrasonic cleaning process for the welded stainless steel hydraulic hard tube is characterized by comprising the following steps of:
1) the straight pipe is fed, and then the straight pipe is immersed in the degreasing solution of the ultrasonic degreasing tank for cleaning, and the solution formula in the ultrasonic groove type complete immersion method is as follows: the mass volume concentration of sodium hydroxide is 35-50 g/L, the mass volume concentration of trisodium phosphate is 20-30 g/L, the mass volume concentration of sodium carbonate is 55-75 g/L, the mass volume concentration of sodium silicate is 3-5 g/L, and the operating conditions are as follows: the temperature of the solution is 600-900 ℃, the ultrasonic power is less than or equal to 20KW, and the solution lasts for a long time to remove the grease and oil stains completely; 2) after the straight pipe is cleaned, bending the straight pipe, and trimming the bent pipe length and the bent groove;
3) spot welding the trimmed bent straight pipe and the connector body, and welding to manufacture a hard pipe;
4) after the welding of the bent straight pipe and the joint body in the step 3) is finished, observing a welding oxide skin at the welding position of the inner wall by using a camera, cleaning the welding oxide skin by adopting an ultrasonic groove type partial immersion method, wherein the solution formula in the ultrasonic groove type partial immersion method is as follows: the mass volume concentration of nitric acid is 60-80 g/L, the mass volume concentration of sulfuric acid is 78-85 g/L, the mass volume concentration of hydrofluoric acid is 20-25 g/L, the mass volume concentration of sulfonated coal is 1.0-1.5 g/L, and the balance is water, wherein the operation conditions are as follows: the temperature of the solution is the same as the room temperature, the ultrasonic power is less than or equal to 20KW, and the duration is 30-50 min;
5) and finishing the cleaning of the welding part to finish the manufacturing and cleaning of the hard tube assembly.
2. The ultrasonic cleaning process of welded stainless steel hydraulic hard pipe of claim 1, wherein the ultrasonic cleaning process is characterized in that
The solution formula in the ultrasonic groove type partial immersion method should be properly shortened in duration or used in new preparation
The time is controlled to be within a predetermined lower limit so as to prevent the occurrence of over-corrosion.
3. The ultrasonic cleaning process of welded stainless steel hydraulic hard pipe of claim 1, wherein the ultrasonic cleaning process is characterized in that
The solution formula in the ultrasonic groove type partial immersion method should be properly shortened in duration or used in new preparation
The time is controlled to be within a predetermined lower limit so as to prevent the occurrence of over-corrosion.
4. The ultrasonic cleaning process of claim 1, wherein the solution in the ultrasonic trough type partial immersion method can be used to prolong the pickling time properly according to the working efficiency of the solution without causing over-corrosion phenomenon, so as to completely remove scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810753088.2A CN110695000A (en) | 2018-07-10 | 2018-07-10 | Ultrasonic cleaning process for welded stainless steel hydraulic hard tube |
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| CN201810753088.2A CN110695000A (en) | 2018-07-10 | 2018-07-10 | Ultrasonic cleaning process for welded stainless steel hydraulic hard tube |
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| CN110695000A true CN110695000A (en) | 2020-01-17 |
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| DE102013018528A1 (en) * | 2013-11-04 | 2015-05-07 | Audi Ag | Method and device for automated cleaning of a welding torch head |
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| CN205518802U (en) * | 2016-01-22 | 2016-08-31 | 王凯 | Ultrasonic scale preventing and removing device |
| CN105964618A (en) * | 2016-05-30 | 2016-09-28 | 长治清华机械厂 | Ultrasonic cleaning process for welded type stainless steel hydraulic rigid tube assembly |
| CN105983557A (en) * | 2015-01-30 | 2016-10-05 | 重庆文力机械有限公司 | Hydraulic hard-pipe washing method |
| CN106623234A (en) * | 2015-11-01 | 2017-05-10 | 华中农业大学 | T-pipe-structured ultrasonic cleaning in place device |
| CN107127185A (en) * | 2017-07-17 | 2017-09-05 | 欧锦庭 | A kind of ultrasonic cleaning equipment for long pipeline |
| CN107497772A (en) * | 2017-10-17 | 2017-12-22 | 天津市优尼迪科技有限公司 | A kind of cleaning machine cleaning spray coating technology |
| CN207057087U (en) * | 2017-08-02 | 2018-03-02 | 无锡市力达金属制品有限公司 | A kind of stainless steel oxidation skin cleaning device |
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2018
- 2018-07-10 CN CN201810753088.2A patent/CN110695000A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62263892A (en) * | 1986-05-08 | 1987-11-16 | Furukawa Electric Co Ltd:The | Cleaning method for weld defective part of metallic pipe |
| US5711327A (en) * | 1995-10-10 | 1998-01-27 | Fields; John T. | System for vibration cleaning of articles including radiators |
| CN101934280A (en) * | 2010-04-20 | 2011-01-05 | 褚兴全 | Efficient ultrasonic scale-preventing/removing device for long-pipeline |
| CN102580937A (en) * | 2011-12-21 | 2012-07-18 | 彭军宏 | Method for realizing live cleaning of secondary equipment |
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| CN105127163A (en) * | 2015-08-27 | 2015-12-09 | 上海十三冶建设有限公司 | Method for clearing oil stains on industrial waste fuel gas cabinet |
| CN106623234A (en) * | 2015-11-01 | 2017-05-10 | 华中农业大学 | T-pipe-structured ultrasonic cleaning in place device |
| CN205518802U (en) * | 2016-01-22 | 2016-08-31 | 王凯 | Ultrasonic scale preventing and removing device |
| CN105964618A (en) * | 2016-05-30 | 2016-09-28 | 长治清华机械厂 | Ultrasonic cleaning process for welded type stainless steel hydraulic rigid tube assembly |
| CN107127185A (en) * | 2017-07-17 | 2017-09-05 | 欧锦庭 | A kind of ultrasonic cleaning equipment for long pipeline |
| CN207057087U (en) * | 2017-08-02 | 2018-03-02 | 无锡市力达金属制品有限公司 | A kind of stainless steel oxidation skin cleaning device |
| CN107497772A (en) * | 2017-10-17 | 2017-12-22 | 天津市优尼迪科技有限公司 | A kind of cleaning machine cleaning spray coating technology |
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