CN110487485A - A kind of tooling and detection method of testing product chrome layer quality - Google Patents

A kind of tooling and detection method of testing product chrome layer quality Download PDF

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Publication number
CN110487485A
CN110487485A CN201910896617.9A CN201910896617A CN110487485A CN 110487485 A CN110487485 A CN 110487485A CN 201910896617 A CN201910896617 A CN 201910896617A CN 110487485 A CN110487485 A CN 110487485A
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China
Prior art keywords
detection
outer cylinder
gas
tooling
tube body
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CN201910896617.9A
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Chinese (zh)
Inventor
李有军
刘楠
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GUIZHOU LONGFEI AVIATION ACCESSORY CO Ltd
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GUIZHOU LONGFEI AVIATION ACCESSORY CO Ltd
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Priority to CN201910896617.9A priority Critical patent/CN110487485A/en
Publication of CN110487485A publication Critical patent/CN110487485A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/06Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention discloses the toolings and detection method of a kind of testing product chrome layer quality, include detection outer cylinder, gas injection device and limit end cap, gas storage chamber are equipped in the inner wall of detection outer cylinder, and be additionally provided with the inlet channel communicated with gas storage chamber in stating detection outer cylinder;The gas injection device includes the tube body being sequentially connected, connector sleeve, attaching nut and coupling nut, gas injection device is by pipe welding in detection outer cylinder, it is integrally formed structure, the interface channel communicated with inlet channel is formed in the inside of tube body, the air injection opening communicated with interface channel is equipped at the top of tube body, it is connect by air injection opening with external air source, realizes and inject gas into gas storage chamber;The limit end cap is used to limit the sliding distance of the detection outer cylinder.Using tooling of the present invention and detection method, it is not only able to achieve the detection to chrome layer quality, also has detection accuracy high, efficiency is fast, can quickly judge chrome layer quality, and the practicality is strong, is particularly suitable for promoting and applying.

Description

A kind of tooling and detection method of testing product chrome layer quality
Technical field
The present invention relates to quality of coating detection technique field, specifically a kind of testing product chrome layer quality Tooling and detection method.
Background technique
In machining manufacturing process, after completing the process to part, the surface progress to part is generally required Corresponding surface treatment, such as electroplating processes, the piece surface after surface treatment often have stronger corrosion resistance, To extend the service life of part.Especially in the fields such as aviation, automobile and machinery manufacturing industry, central siphon is often used Class part, such as the hydraulic stem, the bearing sleeve spare and accessory parts that are commonly used, belong to central siphon class scope.It is past for axis pipe part It is higher toward the requirement to its surface quality, it is desirable that there is very high hardness.Therefore, typically logical on the surface of axis pipe part It crosses plating mode and plates one layer of hard chrome, since chrome layer has excellent performance, be widely used as protection and decorative coating body The extexine and functional coating of system, occupy an important position always in electroplating industry.Using surface treatment, in piece surface shape At chrome layer, main function is the finish that can increase central siphon class piece surface, Corrosion Protection and wear-resisting property.
Because there are reticulate patterns for chrome-plated process itself, if the product reticulate pattern poor quality after plating, there can be " evaporating, emitting, dripping or leaking of liquid or gas " Problem needs to detect quality of coating for the axis pipe part after plating, and whether detection thickness of coating, which meets use, is wanted It asks or whether the microcosmic reticular structure of coating is fine and close, if requirement is not achieved for thickness or honeycomb occurs in coating Shape structure, then the layers of chrome after plating cannot be met the requirements.Current detection mode is typically all by the way of scarification It detects whether the coating of plating has honeycomb structure, using scarification, operator is needed to hold scriber, passed through according to operation It tests, is delineated on coating to be detected, then observe on coating the depth of scratch or scratch whether occur, whether is coating Even compact etc., to judge whether coating to be detected meets the requirements.It can be seen that being needed using existing detection mode Sample is destroyed, can not achieve mass detection, low efficiency, large labor intensity.Therefore, for axis pipe part the characteristics of, needs When designing corresponding detecting tool, and being detected using the detecting tool of design, the purpose quickly detected can be realized.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to background technique, it is simple to provide a kind of structure, behaviour Make detecting tool easy to use, when being detected using the detecting tool, be not only able to achieve the detection to chrome layer quality, also With detection accuracy height, efficiency is fast, can quickly judge chrome layer quality, specifically a kind of testing product chrome layer quality Tooling and detection method.
In order to solve the above technical problems, the technical scheme adopted by the invention is as follows: a kind of testing product chrome layer quality Tooling includes for part to be detected, and the part is the axis tubular structure that electroplating surface has layers of chrome, and the tooling includes There are detection outer cylinder, gas injection device and limit end cap, the detection outer cylinder is cylindricality tubular structure, the outer diameter phase of internal diameter and part Matching, and can horizontally slip along the outer surface of part, be equipped in the inner wall of the detection outer cylinder groove-like in a ring Gas storage chamber, and an inlet channel communicated with the gas storage chamber is equipped in the detection outer cylinder;The gas injection device includes There are the tube body being sequentially connected, connector sleeve, attaching nut and coupling nut, the gas injection device is by pipe welding in detection outer cylinder In, it is integrally formed structure, the tube body is the hollow structure of both ends open, is formed with and the air inlet in the inside of the tube body The interface channel that channel communicates is equipped with the air injection opening communicated with interface channel at the top of the tube body, passes through the air injection opening It is connect with external air source, realizes and inject gas into gas storage chamber, the air injection opening is simultaneously tightly connected by coupling nut;The limit Position end cap is cylindricality tubular structure, and the outer diameter of internal diameter and part to be detected matches, and the limit end cap is connected to be checked The part end of survey is used to limit the sliding distance of the detection outer cylinder by the limit end cap.
Further, the tooling of a kind of testing product chrome layer quality of the present invention, wherein in the detection outer cylinder Inner wall in be additionally provided with the seal groove of multiple shapes in a ring distribution, and retaining ring and sealing ring are equipped in the seal groove, wherein The retaining ring is located at the outside of sealing ring, and is embedded in seal groove with sealing ring in parastate, the retaining ring and sealing ring It is equal with the detection inner wall of outer cylinder.
Further, the tooling of a kind of testing product chrome layer quality of the present invention, wherein the seal groove is equipped with Four, four seal grooves are divided into two groups, and two groups of seal grooves are distributed in the detection outer cylinder in symmetry status centered on gas storage chamber Inner wall in.
Further, the tooling of a kind of testing product chrome layer quality of the present invention, wherein the connector sleeve is fixed In the lateral surface of the tube body, the attaching nut and coupling nut threadedly with the tube body bolt, and It can be rotated with the tube body, wherein the air injection opening realizes connection by cooperating between coupling nut and attaching nut Nut is openable or seals the air injection opening.
The invention also discloses using above-mentioned tooling detection method, the detection method specifically includes the following steps:
(1), plating in advance is used on the part of detection, first will test the lateral surface that outer cylinder is set to part along part end sleeve, so Limit end cap is fixed on the part end again afterwards, completes the installation of tooling before detecting;
(2), it first passes through coupling nut and opens air injection opening, using air injection opening external gas source, under the action of external air source, gas is logical Inlet channel in the interface channel and detection outer cylinder of tubular body formation is crossed, into gas storage chamber, when filling gas in gas storage chamber Afterwards, it is then screwed in air injection opening by coupling nut, rotates coupling nut and attaching nut, pass through coupling nut and attaching nut Between cooperate, realize that coupling nut is tightly connected air injection opening, the gas injection of tooling sealed before completing detection;
(3), when detecting, part, which is first placed in storage, has in the groove body of No. 15 aircraft fluids, then will test outer cylinder) along zero The surface of part horizontally slips, and in sliding process, emerges if any bubble, shows that piece surface chrome layer reticulate pattern gap is excessive, net Line can breakdown perforation, chrome layer quality is undesirable;If bubble-free is emerged, show that the chrome layer quality at detection is closed Lattice meet the requirements.
Further, as the preferred technical solution of the present invention, wherein in the step, the gas that is injected into gas storage chamber Body is high pressure nitrogen, and the nitrogen pressure is part under use environment, 2~3 times of the pressure carried under working condition.
Using a kind of tooling and detection method of testing product chrome layer quality of the present invention, with prior art phase Than, the beneficial effect is that: due to being equipped with detection outer cylinder with part lateral surface to be detected, and in the detection outer cylinder The gas storage chamber for being equipped with a groove-like in a ring in wall, by external high-pressure air source, is realized to storage under the action of gas injection device Inject gas in air cavity, when detection, horizontally slipped by detection outer cylinder along the outer surface of part, according to air storage intracavity gas whether There is bubble to emerge, the purpose detected automatically can be realized.Using tooling of the present invention, have structure simple, design is reasonable, It when detection, operates and easy to use, is not only able to achieve the detection to chrome layer quality, also have detection accuracy high, efficiency is fast, energy Enough quickly to judge chrome layer quality, the practicality is strong, is particularly suitable for promoting and applying.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is structural schematic diagram when being detected using tooling of the present invention.
As shown in the figure: 1- detects outer cylinder, 11- gas storage chamber, 12- inlet channel, 13- seal groove, 2- gas injection device, 21- pipe Body, 22- connector sleeve, 23- attaching nut, 24- coupling nut, 25- air injection opening, 26- interface channel, 3- limit end cap, 4- retaining ring, 5- sealing ring, 6- part.
Specific embodiment
To further illustrate design of the invention, a specific embodiment of the invention is made below with reference to attached drawing further Illustrate:
As depicted in figs. 1 and 2, the tooling of a kind of testing product chrome layer quality of the present invention, includes for be detected Part 6, the part 6 is that electroplating surface has the axis tubular structure of layers of chrome, and the tooling includes detection outer cylinder 1, gas injection dress 2 and limit end cap 3 are set, the detection outer cylinder 1 is cylindricality tubular structure, and the outer diameter of internal diameter and part 6 matches, and can be along zero The outer surface of part 6 horizontally slips, and the gas storage chamber 11 an of groove-like in a ring is equipped in the inner wall of the detection outer cylinder 1, and An inlet channel 12 communicated with the gas storage chamber 11 is equipped in the detection outer cylinder 1;The gas injection device 2 include according to Secondary connected tube body 21, connector sleeve 22, attaching nut 23 and coupling nut 24, the gas injection device 2 are welded in by tube body 21 It detects in outer cylinder 1, is integrally formed structure, the tube body 21 is the hollow structure of both ends open, in the inside shape of the tube body 21 The interface channel 26 that inlet channel 12 described in Cheng Youyu communicates is equipped at the top of the tube body 21 and communicates with interface channel 26 Air injection opening 25 is connect by the air injection opening 25 with external air source, is realized and is injected gas into gas storage chamber 11, the air injection opening 25 And it is tightly connected by coupling nut 24;The limit end cap 3 is cylindricality tubular structure, internal diameter and part 6 to be detected Outer diameter matches, and the limit end cap 3 is connected to 6 end of part to be detected, described for limiting by the limit end cap 3 Detect the sliding distance of outer cylinder 1.
Further, the tooling of a kind of testing product chrome layer quality of the present invention, wherein in the detection outer cylinder 1 Inner wall in be additionally provided with the seal groove 13 of multiple shapes in a ring distribution, and retaining ring 4 and sealing ring are equipped in the seal groove 13 5, wherein the retaining ring 4 is located at the outside of sealing ring 5, and it is embedded in seal groove 13 with sealing ring 5 in parastate, the gear Circle 4 and sealing ring 5 are equal with the detection inner wall of outer cylinder 1.
Further, the tooling of a kind of testing product chrome layer quality of the present invention, wherein the seal groove 13 is set There are four, it is two groups that four seal grooves 13, which are divided to, and two groups of seal grooves 13 are distributed in centered on gas storage chamber 11 in symmetry status described In the inner wall for detecting outer cylinder 1.
Further, the tooling of a kind of testing product chrome layer quality of the present invention, wherein the connector sleeve 22 is solid Due in the lateral surface of the tube body 21, the attaching nut 23 and coupling nut 24 threadedly with the tube body 21 Bolt, and can be rotated with the tube body 21, wherein the air injection opening 25 passes through between coupling nut 24 and attaching nut 23 It cooperates, realization coupling nut 24 is openable or seals the air injection opening 25.
When being detected using tooling of the present invention, detection method specifically includes the following steps:
(1), plating in advance is used on the part 6 of detection, first will test the outside that outer cylinder 1 is set to part 6 along 6 end sleeve of part Then limit end cap 3 is fixed on 6 end of part again by face, complete the installation of tooling before detecting;
(2), it first passes through coupling nut 24 and opens air injection opening 25, using 25 external gas source of air injection opening, under the action of external air source, Gas passes through inlet channel 12 in the interface channel 26 formed inside tube body 21 and detection outer cylinder 1 and works as storage into gas storage chamber 11 It after filling gas in air cavity 11, is then screwed in air injection opening 25 by coupling nut 24, rotates coupling nut 24 and attaching nut 23, by cooperating between coupling nut 24 and attaching nut 23, realization coupling nut 24 is tightly connected air injection opening 25, complete The gas injection of tooling is sealed at before detection;
(3), when detecting, part 6, which is first placed in storage, has in the groove body of No. 15 aircraft fluids, then will test 1 edge of outer cylinder The surface of part 6 horizontally slips, and in sliding process, emerges if any bubble, shows that piece surface chrome layer reticulate pattern gap is excessive, Reticulate pattern can breakdown perforation, chrome layer quality is undesirable;If bubble-free is emerged, show that the chrome layer quality at detection is closed Lattice meet the requirements.
In specific detection process, the lateral surface that outer cylinder 1 is set to part 6 along 6 end sleeve of part first will test, then again will Limit end cap 3 is fixed on 6 end of part, the installation of the tooling before completing detection;Then coupling nut 24 is rotated, company is passed through It connects the opening air injection opening 25 of nut 24 and under the action of external air source, passes through the air injection opening 25 using 25 external gas source of air injection opening It realizes and injects gas into gas storage chamber 11;After filling gas in gas storage chamber 11, realized by coupling nut 24 to air injection opening 25 It is tightly connected;The gas wherein injected into gas storage chamber is high pressure nitrogen, and the nitrogen pressure is part under use environment, 2~3 times of the pressure carried under working condition.When detection, first part 6 is placed in No. 15 aircraft fluids, it then will inspection Outer cylinder 1 is surveyed to horizontally slip along the surface of part 6, in sliding process, when piece surface chromium plating reticulate pattern gap is excessive, reticulate pattern meeting Breakdown perforation, reticulate pattern extend into outside retaining ring 4, and there will be linear bubbles to emerge, and show that chrome layer is of poor quality, if bubble-free emits Out, then show that the chrome layer at detection is up-to-standard, meet the requirements, can be realized by Mobile tool and be plated everywhere in entire part The detection of chromium layer quality.
In conclusion having structure simple using tooling of the present invention and detection method, design rationally, is being detected In the process, it can be achieved that the purpose detected automatically, there is operation and easy to use, be not only able to achieve the detection to chrome layer quality, Also have detection accuracy high, efficiency is fast, can quickly judge quality of coating, and the practicality is strong, is particularly suitable for promoting and applying.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the invention, for the technology of this field For personnel, there can be various modifications and variations, it is all to utilize any modification, equivalent replacement, improvement and so on of the present invention, it should all It is included within protection scope of the present invention.

Claims (6)

1. a kind of tooling of testing product chrome layer quality includes for part to be detected (6), the part (6) is table Face is electroplate with the axis tubular structure of layers of chrome, it is characterised in that: the tooling includes detection outer cylinder (1), gas injection device (2) and limit Position end cap (3), the detection outer cylinder (1) are cylindricality tubular structure, and internal diameter and the outer diameter of part (6) match, and can be along zero The outer surface of part (6) horizontally slips, and the gas storage chamber an of groove-like in a ring is equipped in the inner wall of detection outer cylinder (1) (11), and in detection outer cylinder (1) it is equipped with an inlet channel (12) communicated with the gas storage chamber (11);The gas injection Device (2) includes the tube body (21) being sequentially connected, connector sleeve (22), attaching nut (23) and coupling nut (24), the note Device of air (2) is welded in detection outer cylinder (1) by tube body (21), is integrally formed structure, and the tube body (21) is both ends open Hollow structure, the interface channel (26) communicated with the inlet channel (12), In are formed in the inside of the tube body (21) The top of the tube body (21) is equipped with the air injection opening (25) communicated with interface channel (26), by the air injection opening (25) and external Gas source connection is realized and injects gas into gas storage chamber (11), and the air injection opening (25) is simultaneously tightly connected by coupling nut (24); The limit end cap (3) is cylindricality tubular structure, and internal diameter and the outer diameter of part to be detected (6) match, the positive stop end Lid (3) is connected to part to be detected (6) end, is used to limit the cunning of detection outer cylinder (1) by limit end cap (3) Dynamic distance.
2. a kind of tooling of testing product chrome layer quality according to claim 1, it is characterised in that: outside the detection It is additionally provided with the seal groove (13) of multiple distributions of shape in a ring in the inner wall of cylinder (1), and is equipped with retaining ring in the seal groove (13) (4) and sealing ring (5) it, wherein the retaining ring (4) is located at the outside of sealing ring (5), and is inlayed with sealing ring (5) in parastate In seal groove (13), the retaining ring (4) and sealing ring (5) are equal with the detection inner wall of outer cylinder (1).
3. a kind of tooling of testing product chrome layer quality according to claim 2, it is characterised in that: the seal groove (13) there are four setting, four seal grooves (13) are divided into two groups, and two groups of seal grooves (13) are in symmetry shape centered on gas storage chamber (11) State is distributed in the inner wall of detection outer cylinder (1).
4. a kind of tooling of testing product chrome layer quality according to claim 1, it is characterised in that: the connector sleeve (22) it is fixed in the lateral surface of the tube body (21), the attaching nut (23) and coupling nut (24) are threadedly It with the tube body (21) bolt, and can be rotated with the tube body (21), wherein the air injection opening (25) passes through coupling nut (24) it cooperates between attaching nut (23), realization coupling nut (24) is openable or seals the air injection opening (25).
5. a kind of detection method of the tooling as described in any one of Claims 1-4, which is characterized in that the detection method Specifically includes the following steps:
(1), plating in advance is used on the part (6) of detection, first will test outer cylinder (1) along part (6) end sleeve and is set to part (6) Lateral surface, the part (6) end then is fixed in limit end cap (3) again, completes the installation of tooling before detecting;
(2), coupling nut (24) are first passed through and open air injection opening (25), using air injection opening (25) external gas source, in external air source Under effect, gas is entered by inlet channel (12) in the interface channel (26) formed inside tube body (21) and detection outer cylinder (1) It in gas storage chamber (11), after filling gas in gas storage chamber (11), is then screwed in air injection opening (25), revolves by coupling nut (24) Turn coupling nut (24) and attaching nut (23), by cooperating between coupling nut (24) and attaching nut (23), realizes Coupling nut (24) is tightly connected air injection opening (25), seals before completing detection to the gas injection of tooling;
(3), when detecting, part 6, which is first placed in storage, has in the groove body of No. 15 aircraft fluids, then will test outer cylinder (1) Surface along part (6) horizontally slips, and in sliding process, emerges if any bubble, shows piece surface chrome layer reticulate pattern gap It is excessive, reticulate pattern can breakdown perforation, chrome layer quality is undesirable;If bubble-free is emerged, show the chrome layer at detection It is up-to-standard, it meets the requirements.
6. detection method according to claim 5, it is characterised in that: in the step (2), to note in gas storage chamber (11) The gas entered is high pressure nitrogen, and the nitrogen pressure is part (6) under use environment, the pressure carried under working condition 2~3 times.
CN201910896617.9A 2019-09-23 2019-09-23 A kind of tooling and detection method of testing product chrome layer quality Pending CN110487485A (en)

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Application publication date: 20191122