CN208751398U - Thread gage with wear resistant surface coatings - Google Patents
Thread gage with wear resistant surface coatings Download PDFInfo
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- CN208751398U CN208751398U CN201821060975.3U CN201821060975U CN208751398U CN 208751398 U CN208751398 U CN 208751398U CN 201821060975 U CN201821060975 U CN 201821060975U CN 208751398 U CN208751398 U CN 208751398U
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Abstract
The utility model relates to a kind of thread gages with wear resistant surface coatings, applied to the thread measurement in metal material work pieces process, the especially thread measurement of the higher workpiece of hardness such as tungsten workpiece, the thread gage includes screw thread gauge and wear resistant surface coatings, the wear resistant surface coatings be attached to the screw thread gauge for detection active section surface.TiN surface covering is carried out to thread gage active section, that is, external threaded surface using PVD method, coating layer thickness is about 0.5-5 μm, hardness after coating is up to HV2000-2300 or so, and coefficient of friction reduces, when detecting tungsten workpiece using it, service life can be improved at least 3000 or more, be original 3-10 times；Hardness after forming TiCN coating is up to HV2800；Hardness after forming TiAlN coating is up to HV3500；And the detection accuracy of thread gage is not influenced, increased costs are few.
Description
Technical field
The utility model relates to a kind of thread gages with wear resistant surface coatings, applied in metal material work pieces process
The thread measurement of the higher workpiece of thread measurement, especially hardness such as tungsten workpiece belongs to technical field of mechanical processing.
Background technique
Screw thread process is processing method common in machining, and whether qualification is required to detect the screw thread after processing.Spiral shell
Line rule are also known as screw gauge, external thread gauge, determine whether the size of screw thread is correct commonly used to examine.Thread gage uses the longevity
Life depends primarily on its surface hardness, and general commercially available thread gage have passed through heat treatment, hardness between HV650-800,
When being lower than the workpiece of the thread gage hardness for detecting hardness, wearability is fair, but hard higher than commercially available thread gage for hardness
When the workpiece sensing of degree, service life is greatly lowered.
Tungsten belongs to rare metal granite, has the characteristics that fusing point is high, density is big, hardness is high, especially tungsten material hardness
Higher, hardness is close with the hardness of general commercially available thread gage generally between HV400-600, leads to general commercially available spiral shell
It is insufficient that line advises wear-resisting property.Connector of the tungsten screw thread as hot operation, threaded connection are common connection type, tungsten spiral shell
The production of the connector of line, amount detection are very big, so putting forward higher requirement to the service life of thread gage.
Commercially available thread gage generally uses tool steel to make, and surface does not have any coating treatment, and surface hardness is lower, no
Wear-resistant, service life is lower, when for when detecting tungsten internal screw workpiece, service life up to detect 1000 productions
Product, since internal screw gauge price is higher, so higher using the testing cost of commercially available thread gage.
Utility model content
For the service life for improving thread gage, the utility model provides a kind of thread gage with wear resistant surface coatings,
The thread gage is suitable for the thread measurement of the higher workpiece of hardness, the detection particularly suitable for rare metal tungsten whorl work piece.
To achieve the goals above, the utility model uses following technical scheme:
A kind of thread gage with wear resistant surface coatings, including screw thread gauge and wear resistant surface coatings, the abrasion-proof gauge
Finishing coat be attached to the screw thread gauge for detection active section surface.
The above-mentioned thread gage with wear resistant surface coatings, as a preferred implementation manner, the thread gage include drift,
No-go gage and handle, wherein the drift and the no-go gage are stick-like, and one end is construction section, the other end is active section, described
Handle is the hollow hexagonal prisms in both ends, and the construction section of the drift and the no-go gage is respectively arranged in the both ends of the handle, three
The axis of person is overlapped.
The above-mentioned thread gage with wear resistant surface coatings, as a preferred implementation manner, the wear resistant surface coatings be
TiN coating, TiAlN TiCN coating.
The above-mentioned thread gage with wear resistant surface coatings, as a preferred implementation manner, the wear resistant surface coatings be
TiN coating.
The above-mentioned thread gage with wear resistant surface coatings, the wear resistant surface coatings are adopted as a preferred implementation manner,
It is prepared with PVD method.
The above-mentioned thread gage with wear resistant surface coatings, as a preferred implementation manner, wear resistant surface coatings
With a thickness of 0.5-5 μm.
The above-mentioned thread gage with wear resistant surface coatings, as a kind of more preferable embodiment, the wear resistant surface coatings
With a thickness of 1-3 μm.
Compared with prior art, the utility model has the advantages that are as follows:
The utility model selects commercially available thread gage, using physical vaporous deposition (PVD) to the active section for detection
I.e. the external threaded surface of thread gage carries out TiN surface covering, and coating layer thickness is about 0.5-5 μm, and preferably 1-3 μm, after coating
Hardness can achieve HV2000-2300 or so, and coefficient of friction reduces, when detecting tungsten workpiece using the thread gage after coating,
Its service life can be improved at least 3000 or more, be original 3-10 times.Hardness after forming TiCN coating can reach
To HV2800, the hardness after forming TiAlN coating can achieve HV3500.It is at low cost since TiN coating process is simple and hard
Degree significantly improves, therefore the utility model preferably uses TiN coating on thread gage surface.
Since the thread gage surface after coating only thickens 0.5-5 μm, so not influencing the detection accuracy of thread gage.
Since the length of work segment of thread gage is shorter, generally 10-20mm, coating layer thickness is very thin, therefore, to the surface into
Row TiN coating, increased costs are few.
Another beneficial effect of the utility model is: for the work for using rear thread to have worn out but form of thread is intact
Make section, still surface covering can be carried out using this patent method again, can be continued to use after reparation.
In conclusion the thread gage provided by the utility model with wear resistant surface coatings, increased costs make less than 10%
3-10 times is improved with the service life, cost is greatly lowered, and has good promotional value.
Detailed description of the invention
Fig. 1 is the assembling schematic diagram using the thread gage of wear resistant surface coatings；
Fig. 2 is each part drawing of thread gage；Wherein, A is drift structural schematic diagram, and B is no-go gage structural schematic diagram, and C is hand
Handle structure schematic diagram；
Appended drawing reference in figure: 1- drift, 2- no-go gage, 3- handle.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing, embodiment
And comparative example, the present invention will be further described in detail.It should be understood that these embodiments are only used for explaining the utility model
Rather than limitation the scope of the utility model；After having read the content of the utility model, those skilled in the art are to this
Utility model makes various changes or modifications, and such equivalent forms equally fall within model defined by the application the appended claims
It encloses.
The utility model provides a kind of thread gage with wear resistant surface coatings, including screw thread gauge and wearing face apply
Layer, wear resistant surface coatings be attached to screw thread gauge for detection active section surface.
Preferably, referring to Fig. 1, Fig. 2, the thread gage includes drift 1, no-go gage 2 and handle 3, wherein drift 1 and no-go gage 2
For stick-like, one end is construction section, the other end is active section (i.e. surface is distributed threaded one end), and handle 3 is in both ends
The construction section of empty hexagonal prisms, drift 1 and no-go gage 2 is respectively arranged in the both ends of handle 3, and the axis of three is overlapped.
Preferably, wear resistant surface coatings are TiN coating, TiAlN coating or TiCN coating, and more preferably wearing face applies
Layer is TiN coating.TiN has fusing point height, the good physics such as chemical stability is good, and hardness is big, and conductive, thermally conductive and optical property is good
Property is very suitable for making coating.Although the hardness of TiCN and TiAlN is higher, due to TiN preparation technology of coating is simple,
It is at low cost, therefore wear resistant surface coatings are more preferably TiN coating in the utility model.
Preferably, wear resistant surface coatings are prepared using PVD method.Physical vapour deposition (PVD) (PVD) method and chemical vapor deposition
(CVD) method prepares coating is technology more mature in recent years.The former depositing temperature is lower, and generally 500 DEG C；The deposition of the latter
Temperature is higher, and generally 900 DEG C~1100 DEG C.Because thread gage generally uses tool steel to make, if temperature is excessively high to will cause tool
Steel belt roof bolt, therefore the utility model uses PVD method.PVD method is mature method in the art, therefore only sketches its principle side herein
Method.
PVD method, which prepares TiN coating, to be carried out in the vacuum chamber of vacuum coating equipment.Under conditions of high vacuum, it is passed through
Inert gas Ar gas, glow discharge is generated under the action of electric field makes Ar pneumoelectric from generation Ar+Ion, Ar+Ion is in electric field
Target (such as pure titanium target material) is hit under acceleration, the titanium atom to strain at the leass is deposited upon workpiece surface.If desired it generates
TiAlN thin film coating then must also be passed through N while being passed through Ar gas2Gas does reaction gas, to form TiAlN thin film (coating).
To form TiCN film (coating), need be passed through N2CH is also passed through after gas4(methane) or C2H2(acetylene) does reaction gas
Body.Ti target and Al target are used to form TiAlN film (coating), and is passed through reaction gas N2Gas.
Preferably, the coating with a thickness of 0.5-5 μm (such as 0.6 μm, 0.8 μm, 1 μm, 1.5 μm, 2 μm, 3 μm, 4 μm,
4.5 μm, 4.8 μm), coating layer thickness is blocked up to will increase production cost, and excessively thin, the uniformity for influencing coating influences to use the longevity in turn
Life.As the increase service life of thickness increases in the range of coat thicknesses of the utility model.It is highly preferred that the coating
1-3 μm of thickness (such as 1.2 μm, 1.4 μm, 1.6 μm, 1.8 μm, 2 μm, 2.2 μm, 2.4 μm, 2.6 μm, 2.8 μm).
The preparation method of the above-mentioned thread gage with wear resistant surface coatings includes the following steps:
1) commercially available thread gage is purchased, or makes thread gage by oneself through over mechanical processing with tool steel；
2) coating prepares: the thread gage active section of cleaning coating to be carried out can be cleaned using ultrasonic oil removal, then be dried
It is dry；
3) coating is carried out using surface of the conventional PVD method to thread gage active section.
Embodiment 1
The thread gage of TiN coating provided in this embodiment, TiN surface covering with a thickness of 2 μm.Preparation method include with
Lower step:
1) commercially available thread gage or self-control thread gage, specification M12, screw pitch 1.75 (coarse thread) are purchased；Structure is as shown in Figure 1, Figure 2
It is shown, it is made of drift 1, no-go gage 2 and handle 3, drift 1, no-go gage 2 is separated with handle 3 and unloaded；
2) coating prepares: drift 1, the no-go gage 2 of cleaning coating to be carried out, using oil removing cleaning i.e. using commercially available soap powder into
It row ultrasonic cleaning about 10 minutes, is then dried in drying box for 80 DEG C；
3) drift 1, no-go gage 2 are placed in vacuum coating equipment, are formed using PVD technique on the surface of thread gage active section
2 μm of thickness of TiN coating.
Thread gage provided in this embodiment with TiN surface covering, the hardness of the active section after coating are HV2200, are used
Service life is up to 3200 when measuring tungsten threaded connector.
Embodiment 2
Thread gage provided in this embodiment with TiCN coating, preparation method includes the following steps:
1) thread gage, specification M12, screw pitch 1.25 (closely-pitched) are made by oneself；Structure is as shown in Figure 1 and Figure 2, by drift 1, no-go gage 2
It is formed with handle 3, drift 1, no-go gage 2 is separated with handle 3 and unloaded；
2) coating prepares: drift 1, the no-go gage 2 of cleaning coating to be carried out, using oil removing cleaning i.e. using commercially available soap powder into
Row ultrasonic cleaning about 10 minutes, then 80 DEG C of drying；
3) drift 1, no-go gage 2 are placed in vacuum coating equipment, are formed using PVD technique on the surface of thread gage active section
1 μm of thickness of TiCN coating.
Thread gage provided in this embodiment with TiCN surface covering, the hardness of the active section after coating are HV2500,
Service life is up to 3500 when for measuring tungsten threaded connector.
Embodiment 3
The thread gage of TiAlN surface covering provided in this embodiment, preparation method includes the following steps:
1) self-control thread gage of the tool steel through over mechanical processing is used, specification M5, screw pitch 0.5 (closely-pitched), structure is as schemed
1, it shown in Fig. 2, is made of drift 1, no-go gage 2 and handle 3, drift 1, no-go gage 2 is separated with handle 3 and unloaded；
2) coating prepares: drift 1, the no-go gage 2 of cleaning coating to be carried out, using oil removing cleaning i.e. using commercially available soap powder into
Row ultrasonic cleaning about 10 minutes, then 80 DEG C of drying；
3) TiAlN coating is formed on the surface of drift 1, no-go gage 2 using PVD technique, coating layer thickness is 5 μm.
Thread gage provided in this embodiment with TiAlN surface covering, the hardness of the active section after coating are HV3500,
Service life is up to 10000 when for measuring tungsten threaded connector.
Embodiment 4
The thread gage of TiN surface covering provided in this embodiment, preparation method includes the following steps:
1) active section of the drift 1 worn after use, no-go gage 2 is subjected to tooth form observation and measurement, confirmation tooth form is complete
After good and dimensional tolerance is qualified, ultrasonic cleaning about 10 minutes are carried out using commercially available soap powder using oil removing cleaning, then 80
DEG C drying；
2) TiN coating is formed on the surface of thread gage active section using PVD technique, coating layer thickness is according to tolerance dimension feelings
Condition determines.
3) active section tolerance dimension is measured, is continued to use again after confirmation is qualified.
Claims (3)
1. a kind of thread gage with wear resistant surface coatings, which is characterized in that the thread gage includes screw thread gauge and wear-resisting
Surface covering, the wear resistant surface coatings be attached to the screw thread gauge for detection active section surface, it is described wear-resisting
Surface covering be TiN coating, TiAlN TiCN coating, the wear resistant surface coatings with a thickness of 1.4-5 μm.
2. according to claim 1 with the thread gage of wear resistant surface coatings, which is characterized in that the thread gage includes logical
Rule, no-go gage and handle, wherein the drift and the no-go gage are stick-like, and one end is construction section, the other end is active section,
The construction section of the handle hexagonal prisms hollow for both ends, the drift and the no-go gage is respectively arranged in the two of the handle
The axis at end, three is overlapped.
3. according to claim 1 with the thread gage of wear resistant surface coatings, which is characterized in that the wear resistant surface coatings are adopted
It is prepared with PVD method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821060975.3U CN208751398U (en) | 2018-07-05 | 2018-07-05 | Thread gage with wear resistant surface coatings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821060975.3U CN208751398U (en) | 2018-07-05 | 2018-07-05 | Thread gage with wear resistant surface coatings |
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| CN208751398U true CN208751398U (en) | 2019-04-16 |
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| CN201821060975.3U Active CN208751398U (en) | 2018-07-05 | 2018-07-05 | Thread gage with wear resistant surface coatings |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091679A (en) * | 2021-04-21 | 2021-07-09 | 中钢集团郑州金属制品研究院有限公司 | Method suitable for measuring thickness of soap powder on surface of steel wire |
-
2018
- 2018-07-05 CN CN201821060975.3U patent/CN208751398U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091679A (en) * | 2021-04-21 | 2021-07-09 | 中钢集团郑州金属制品研究院有限公司 | Method suitable for measuring thickness of soap powder on surface of steel wire |
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