CN108591453A - One bulb rises formula plug and its processing technology - Google Patents
One bulb rises formula plug and its processing technology Download PDFInfo
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- CN108591453A CN108591453A CN201810585195.9A CN201810585195A CN108591453A CN 108591453 A CN108591453 A CN 108591453A CN 201810585195 A CN201810585195 A CN 201810585195A CN 108591453 A CN108591453 A CN 108591453A
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- plug
- cylindrical housings
- sawtooth
- annular groove
- rises
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
Rise formula plug and its processing technology the invention discloses a bulb, belong to spare parts processing machinery manufacturing field, the present invention includes cylindrical housings and crowded part, the head end of cylindrical housings offers expansion hole, expansion hole is interference fitted with crowded part, the appearance of cylindrical housings is circumferentially provided with annular groove sawtooth along cylindrical housings, and the tail end appearance of cylindrical housings is circumferentially provided with the sealing tooth that goes in ring along cylindrical housings.The rise processing of formula plug of the ball is accomplished by the following way：Prepare plug blank；Cold-forge forming；Annular groove processing.The ball formula plug plugging effect that rises of the present invention is good, and stock utilization is high and the case where can adapt to hole wall there are a small amount of oil stains；And ball rise formula plug processing technology production efficiency and stock utilization it is high, finished product stability is more preferable.
Description
Technical field
The invention belongs to spare parts processing machinery manufacturing fields, and in particular to a bulb rises formula plug and its processing technology.
Background technology
The ball formula plug that rises is widely used in hydraulic pressure and pneumatic element excess fluid passway, and oil duct is pressed into tool
Aperture can be realized and be blocked to various complicated force feed oil circuits.The operation principle of the element is that steel ball is pressed
When to sleeve bottom, steel ball makes one section of sleeve generation be radially expanded, and axial stress is changed into the radial expansion effect of sleeve.This
Carve, pointed tooth is formed by by sleeve circumferential annular groove and is forced into the workpiece material of surrounding, to formed effective high pressure without
It is leakage sealed.
It discloses a bulb application No. is the patent of invention of CN201210593089.8 and rises formula high-pressure drain plug, it includes stifled
Head, the plug generally column construction, one end is pyramidal structure, and the plug outer wall is equipped with a circle groove, in the groove
Even be arranged with is set one's teeth on edge, and the apex angle set one's teeth on edge is flushed with the outer wall of plug, and the other end of the plug is drilled with expansion hole, the expansion
The internal diameter in hole is interference fitted with crowded part.The configuration of the present invention is simple is skillfully constructed, and keeps plug radially swollen using the principle of pressure expansion
The swollen hole on workpiece is combined even closer, and sealing effect is preferable, and long time running will not occur to loosen showing for leakage
As greatly increasing its service life.
The ball groove being arranged on plug outer wall that rises generally is only positioned at the middle section of outer wall in the patented technology, on groove
Set one's teeth on edge for being embedded in the hole wall of workpiece；And the plug body part corresponding to the bellmouth of plug is after embedded workpiece hole wall
Too many effect can not be played, the defect that stock utilization is low is caused.On the other hand, the ball plug that rises is speckled in workpiece hole wall mouth
When oil stain, if do not cleaned up oil stain, during installed plug, plug front end is bonded with hole wall can be by oil stain toward two
End arranges, and part oil stain can enter in groove, and sleeve is radially expanded when installing extrusion, tends to cause one in oil stain
A little tiny solids are stuck between setting one's teeth on edge on groove and workpiece hole wall, cause the plug plugging effect poor.In addition, in existing skill
In art, plug is generally manufactured by the way of drilling processing, and this method stock utilization is low, is easy in process of manufacture
There is the defects of material crack, need to be additionally carried out independent detection, greatly reduces the efficiency of its batch production；In addition production adds
Plug mechanical property and corrosion resistance after work is poor, causes plug using effect poor.
Invention content
It is an object of the invention to：It is more preferable and adapt to hole wall and deposit to provide a kind of stock utilization higher, plug plugging effect
Rise formula plug in a kind of ball of a small amount of oil stain situation ball that formula plug and production efficiency are high and product quality stability is good that rises
Processing technology.
The technical solution adopted by the present invention is as follows：
One bulb rises formula plug, including cylindrical housings and crowded part, and the head end of cylindrical housings offers expansion hole, swollen
Swollen hole is interference fitted with crowded part, and the appearance of cylindrical housings is circumferentially provided with annular groove sawtooth, circular cylindrical shell along cylindrical housings
The tail end appearance of body is circumferentially provided with the sealing tooth that goes in ring along cylindrical housings.Sealing tooth go in ring outside the tail end of cylindrical housings
Table is started setting up and is connected directly with annular groove sawtooth；Annular groove sawtooth is set to the intermediate position of cylindrical housings appearance.
Wherein, the belt sealing tooth is identical as annular groove sawtooth set-up mode.
Wherein, each sawtooth of annular groove sawtooth includes on cylindrical housings length direction close to cylindrical housings tail end
The sawtooth antetheca of sawtooth rear wall and close cylindrical housings head end, the angle between sawtooth rear wall and sawtooth antetheca is β, and
65°≥β≥40°；Angle between antetheca and vertical plane is α, and 15 ° >=α >=0 °.
Wherein, expansion hole close to cylindrical housings head end portion offer with the concentric mounting hole communicated of expansion hole,
The depth of mounting hole terminates in the one end of annular groove sawtooth far from the sealing tooth that goes in ring, mounting hole and crowded part slight interference fit, mounting hole
Internal diameter be slightly less than the diameter of crowded part.
Wherein, it is spherical structure to squeeze part.
One bulb rises the processing technology of formula plug, includes the following steps：
(a) prepare plug blank；
(b) cold-forge forming：By multi-station progressive die plug blank is squeezed, is stretched etc. cold-forging techniques formed it is stifled
Head first product；
(c) annular groove is handled：Insertion or diameter identical as the expansion hole aperture of plug is slightly less than stifled in plug first product
Plug first product is simultaneously placed on screw-rolling machine or thread rolling machine by the mandrel in head expansion hole aperture, forms annular groove, annular groove includes
Above-mentioned ball rises the belt sealing tooth and annular groove sawtooth of formula plug.
Wherein, prepare plug blank in step a to include the following steps：
[1] sorting：Stainless steel is chosen as plug blank, is calculated according to required plug size, then uses cutting machine
Plug blank is cut according to the target size after calculating；
[2] solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1000 DEG C~1100 DEG C, the duration
Then 15min~30min is quickly cooled down.
Wherein, a step is added after the processing of step c annular grooves：Solution treatment is carried out to plug first product, temperature is kept
At 1000 DEG C~1100 DEG C, then duration 15min~30min is quickly cooled down.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1, in the present invention, it is cylinder by the way that plug shell is arranged, ring packing teeth then is set in the tail end of shell, when
It installs the ball to rise after formula plug, it is empty with expansion to form a series of gap of shutting off between ring packing teeth and the inner hole wall of workpiece
Chamber (i.e. tortuous labyrinth), the medium for being sealed in inside workpiece generates throttling effect at the gap by being formed by tortuous labyrinth
It answers and achievees the purpose that Drain Resistance.Ball is just enhanced in this way to rise the stock utilization of plug, is further enhanced ball and is risen formula plug
Plugging effect.In addition, by the way that annular groove sawtooth is identical as ring packing teeth setting, reduce manufacturing process technique, while from circle
Cylindrical shell tail end starts to open up slot, also the processing of very convenient annular groove sawtooth.In addition, being carried out to the angle of annular groove sawtooth preferred
Setting, annular groove sawtooth form certain chamfering, further enhance whole sealing effect and fixing intensity in this way.The present invention
Middle ball rises, and formula plug overall structure is simple, and stock utilization is high, and plugging effect is outstanding.
2, it in the present invention, by selecting plug cold-heading materials, then can be greatly improved by the way of cold-forge forming stifled
The stock utilization of head blank, compared to the material that drilling can save 60% or more；In addition continuous die stamping can make plug
Cylindrical housings and mounting hole, expansion hole fast direct be connected to position, the plug first product stability of formation is more preferable, in production efficiency
Aspect can improve 3-10 times compared to the mode that drilling is processed.By being inserted into the expansion with plug in annular groove processing procedure
The mandrel of hole aperture adaptation, can offset the stress generated when processing, prevent from rolled thread causing the change of plug because of squeezing
Shape, and then greatly strengthen the qualification rate of plug product.
3, in the present invention, raising plug quality by taking multiple solution treatment, but solution treatment twice
Purpose and function and effect difference, take solution treatment primarily to improving stainless during preparing plug blank for the first time
The plasticity of steel facilitates subsequent Cold Forging；Solution treatment once is carried out primarily into one after annular groove processing afterwards
Step improves mechanical properties and the corrosion resistances such as the toughness of plug, to improve the use quality of plug.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the part-structure schematic diagram of middle ring grooving saw tooth of the present invention；
It is marked in figure：1- cylindrical housings, 2- expansion holes, 3- annular grooves sawtooth, 31- sawtooth rear wall, 32- sawtooth antetheca, 4-
Go in ring the crowded part of sealing tooth, 5- mounting holes, 6-.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
One bulb rises formula plug, including cylindrical housings 1 and crowded part 6, squeezes part 6 and be spherical structure or be top be partly
The head end of spherical cylindrical structure, cylindrical housings 1 offers expansion hole 2, and the internal diameter of expansion hole 2 is interference fitted with crowded part 6, circle
The appearance of cylindrical shell 1 is circumferentially provided with annular groove sawtooth 3 along cylindrical housings 1, and the tail end appearance of cylindrical housings 1 is along cylinder
Shape shell 1 is circumferentially provided with the sealing tooth 4 that goes in ring, and the sealing tooth 4 that goes in ring is identical as 3 set-up mode of annular groove sawtooth, annular groove sawtooth 3
Each sawtooth includes the sawtooth rear wall 31 and close circle on 1 length direction of cylindrical housings close to 1 tail end of cylindrical housings
The sawtooth antetheca 32 of 1 head end of cylindrical shell, the angle between sawtooth rear wall 31 and sawtooth antetheca 32 are β, and 65 ° >=β >=40 °, β
Preferably 40 °；Angle between antetheca and vertical plane is α, and 15 ° >=α >=0 °, α are preferably 0 °.In addition, expansion hole 2 is close
The head end portion of cylindrical housings 1 is offered terminates in annular groove saw with the concentric mounting hole 5 communicated of expansion hole 2, the depth of mounting hole 5
The one end of tooth 3 far from the sealing tooth 4 that goes in ring, the internal diameter of mounting hole 5 are slightly less than the diameter of crowded part 6.
The ball specific operation principle of formula plug that rises is：Crowded part 6 is put into mounting hole 5, it is using punch that crowded part 6 is inside
It is impacted, due to squeezing for interference fit between part 5 and expansion hole 2, the crowded part 6 being squeezed into expansion hole 2 is so that circular cylindrical shell
1 part of body is radially expanded to the periphery, and annular groove sawtooth 3 snaps onto on workpiece hole wall at this time, realizes the purpose of inclusion seal；Annular groove
Sawtooth 3 forms certain chamfering, further enhances whole sealing effect and fixing intensity.On the other hand, it goes in ring at this time
A series of shut off gap and expansion cavity are formed between sealing tooth 4 and workpiece hole wall, make work using the Mi Gong principles sealed
Part hole wall reaches more outstanding sealing effect.And when stifled there are the ball formula that rises when a small amount of oil stain, is installed in workpiece inner wall
The oil stain of head, plug front end enters in ring packing teeth 4, avoids oil stain and is arrived in annular groove sawtooth 3 by exclusion, and then avoids
The ball rises the problem of formula plug plugging effect difference when there being oil stain in workpiece inner wall；In addition a small amount of oil stain remains in ring packing
In tooth 4, the sealing effect of plug is still further enhanced.
One bulb rises the processing technology of formula plug, includes the following steps：
(a) sorting：Stainless steel is chosen as plug blank, is calculated according to required plug size, then uses cutting machine
Plug blank is cut according to the target size after calculating；
(b) solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1000 DEG C~1100 DEG C, the duration
Then 15min~30min is quickly cooled down；
(c) cold-forge forming：By multi-station progressive die plug blank is squeezed, is stretched etc. cold-forging techniques formed it is stifled
Head first product；
(d) annular groove is handled：It is inserted into the mandrel being adapted to plug endoporus aperture in plug first product and puts plug first product
It sets on screw-rolling machine, rolls out annular groove；
(e) solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1000 DEG C~1100 DEG C, the duration
Then 15min~30min is quickly cooled down.
Embodiment 1
One bulb rises formula plug, including cylindrical housings and crowded part, squeezes the steel ball that part is spherical structure, cylindrical housings
Head end offer expansion hole, expansion hole is interference fitted with crowded part, and the appearance of cylindrical housings is set along the circumferential direction of cylindrical housings
It is equipped with annular groove sawtooth, the tail end appearance of cylindrical housings is circumferentially provided with the sealing tooth that goes in ring along cylindrical housings；It is described to go in ring
Sealing tooth is identical as annular groove sawtooth set-up mode, and each sawtooth of annular groove sawtooth includes close on cylindrical housings length direction
The sawtooth rear wall of cylindrical housings tail end and sawtooth antetheca close to cylindrical housings head ends, sawtooth rear wall and sawtooth antetheca it
Between angle be β, and 65 ° >=β >=40 °；Angle between antetheca and vertical plane is α, and 15 ° >=α >=0 °.Expansion hole is close
The head end portion of cylindrical housings offer with the concentric mounting hole communicated of expansion hole, it is remote that the depth of mounting hole terminates in annular groove sawtooth
One end from belt sealing tooth, the internal diameter of mounting hole are slightly less than the diameter of crowded part.
Embodiment 2
On the basis of embodiment one, a bulb rises the processing technology of formula plug, includes the following steps：
(a) sorting：Stainless steel is chosen as plug blank, is calculated according to required plug size, then uses cutting machine
Plug blank is cut according to the target size after calculating；
(b) solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1000 DEG C, duration 30min, so
After be quickly cooled down；
(c) cold-forge forming：By multi-station progressive die plug blank is squeezed, is stretched etc. cold-forging techniques formed it is stifled
Head first product；
(d) annular groove is handled：It is inserted into the mandrel being adapted to plug endoporus aperture in plug first product and puts plug first product
It sets on screw-rolling machine, rolls out annular groove, intermediate annular groove includes that above-mentioned ball rises the belt sealing tooth and annular groove sawtooth of formula plug；
(e) solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1000 DEG C, duration 30min, so
After be quickly cooled down.
Embodiment 3
On the basis of embodiment two, a bulb rises the processing technology of formula plug, includes the following steps：
(a) sorting：Stainless steel is chosen as plug blank, is calculated according to required plug size, then uses cutting machine
Plug blank is cut according to the target size after calculating；
(b) solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1050 DEG C, duration 30min, so
After be quickly cooled down；
(c) cold-forge forming：By multi-station progressive die plug blank is squeezed, is stretched etc. cold-forging techniques formed it is stifled
Head first product；
(d) annular groove is handled：It is inserted into the mandrel being adapted to plug endoporus aperture in plug first product and puts plug first product
It sets in thread rolling machine, rolls out annular groove；
(e) solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1050 DEG C, duration 30min, so
After be quickly cooled down.
Embodiment 4
On the basis of the above embodiments, a bulb rises the processing technology of formula plug, includes the following steps：
(a) sorting：Stainless steel is chosen as plug blank, is calculated according to required plug size, then uses cutting machine
Plug blank is cut according to the target size after calculating；
(b) solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1050 DEG C, duration 15min, so
After be quickly cooled down；
(c) cold-forge forming：By multi-station progressive die plug blank is squeezed, is stretched etc. cold-forging techniques formed it is stifled
Head first product；
(d) annular groove is handled：It is inserted into the mandrel being adapted to plug endoporus aperture in plug first product and puts plug first product
It sets in thread rolling machine, rolls out annular groove；
(e) solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1050 DEG C, duration 15min, so
After be quickly cooled down.
Embodiment 5
On the basis of the embodiment, a bulb rises the processing technology of formula plug, includes the following steps：
(a) sorting：Stainless steel is chosen as plug blank, is calculated according to required plug size, then uses cutting machine
Plug blank is cut according to the target size after calculating；
(b) solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1100 DEG C, duration 15min, so
After be quickly cooled down；
(c) cold-forge forming：By multi-station progressive die plug blank is squeezed, is stretched etc. cold-forging techniques formed it is stifled
Head first product；
(d) annular groove is handled：It is inserted into the mandrel being adapted to plug endoporus aperture in plug first product and puts plug first product
It sets in thread rolling machine, rolls out annular groove；
(e) solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1100 DEG C, duration 15min, so
After be quickly cooled down.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (8)
- The formula plug 1. a bulb rises, including cylindrical housings (1) and crowded part (6), the head ends of cylindrical housings (1) offer swollen Swollen hole (2), expansion hole (2) are interference fitted with crowded part (6), and the appearance of cylindrical housings (1) is set along the circumferential direction of cylindrical housings (1) It is equipped with annular groove sawtooth (3), it is characterised in that：Tail end appearance being circumferentially provided with along cylindrical housings (1) of cylindrical housings (1) Go in ring sealing tooth (4).
- The formula plug 2. a bulb as described in claim 1 rises, it is characterised in that：The belt sealing tooth (4) and annular groove sawtooth (3) set-up mode is identical.
- The formula plug 3. a bulb as claimed in claim 2 rises, it is characterised in that：Each sawtooth of annular groove sawtooth (3) is included in Close to the sawtooth rear wall (31) of cylindrical housings (1) tail end and close to cylindrical housings on cylindrical housings (1) length direction (1) the sawtooth antetheca (32) of head end, the angle between sawtooth rear wall (31) and sawtooth antetheca (32) are β, and 65 ° >=β >=40 °； Angle between antetheca and vertical plane is α, and 15 ° >=α >=0 °.
- The formula plug 4. a bulb as described in claim 1 rises, it is characterised in that：Expansion hole (2) is close to cylindrical housings (1) Head end portion offer and terminate in annular groove sawtooth (3) with the concentric mounting hole (5) communicated of expansion hole (2), the depth of mounting hole (5) One end far from the sealing tooth (4) that goes in ring, the internal diameter of mounting hole (5) are adapted to the diameter of crowded part (6).
- The formula plug 5. a bulb as described in claim 1 rises, it is characterised in that：It is spherical structure to squeeze part (6).
- The processing technology of formula plug 6. a bulb rises, which is characterized in that include the following steps：(a) prepare plug blank；(b) cold-forge forming：Plug blank is squeezed, is stretched etc. at the beginning of cold-forging techniques form plug by multi-station progressive die Product；(c) annular groove is handled：The mandrel that is adapted to expansion hole (2) aperture of plug is inserted into plug first product and by plug first product It is placed on thread processing equipment, rolls out annular groove.
- The processing technology of formula plug 7. a bulb as claimed in claim 6 rises, it is characterised in that：Prepare plug base in step a Material includes the following steps：[1] sorting：Stainless steel is chosen as plug blank；[2] solution treatment：Plug blank is subjected to solution treatment, temperature is maintained at 1000 DEG C~1100 DEG C, duration 15min ~30min, is then quickly cooled down.
- The processing technology of formula plug 8. a bulb as claimed in claim 6 rises, it is characterised in that：In step c, i.e., at annular groove It manages step and increases a step later：Solution treatment is carried out to plug first product, temperature is maintained at 1000 DEG C~1100 DEG C, when continuing Between 15min~30min, be then quickly cooled down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810585195.9A CN108591453A (en) | 2018-06-08 | 2018-06-08 | One bulb rises formula plug and its processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810585195.9A CN108591453A (en) | 2018-06-08 | 2018-06-08 | One bulb rises formula plug and its processing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108591453A true CN108591453A (en) | 2018-09-28 |
Family
ID=63623204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810585195.9A Pending CN108591453A (en) | 2018-06-08 | 2018-06-08 | One bulb rises formula plug and its processing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591453A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110605310A (en) * | 2019-09-10 | 2019-12-24 | 中冶陕压重工设备有限公司 | Method for plugging high-pressure oil hole of jaw sector plate of coiling machine |
| CN110665773A (en) * | 2019-09-29 | 2020-01-10 | 瑞安市科达汽车配件有限公司 | Processing technology of high-pressure flow environment-friendly integrated electric fuel pump integrated shell |
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| CN200968414Y (en) * | 2006-10-10 | 2007-10-31 | 冯力 | Seal stopper |
| CN103774054A (en) * | 2012-10-24 | 2014-05-07 | 邓俊杰 | Alloy screw material and production technology of screws by adopting material |
| CN103867718A (en) * | 2012-12-07 | 2014-06-18 | 宁波市鄞州通用电器二厂 | Ball-swelling type high-pressure end cap |
| CN105798542A (en) * | 2014-12-31 | 2016-07-27 | 国核电站运行服务技术有限公司 | Machining method for plug in heat transfer pipe of heat exchanger |
| CN208417512U (en) * | 2018-06-08 | 2019-01-22 | 绵阳安立机械有限公司 | One bulb rises formula plug |
-
2018
- 2018-06-08 CN CN201810585195.9A patent/CN108591453A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200968414Y (en) * | 2006-10-10 | 2007-10-31 | 冯力 | Seal stopper |
| CN103774054A (en) * | 2012-10-24 | 2014-05-07 | 邓俊杰 | Alloy screw material and production technology of screws by adopting material |
| CN103867718A (en) * | 2012-12-07 | 2014-06-18 | 宁波市鄞州通用电器二厂 | Ball-swelling type high-pressure end cap |
| CN105798542A (en) * | 2014-12-31 | 2016-07-27 | 国核电站运行服务技术有限公司 | Machining method for plug in heat transfer pipe of heat exchanger |
| CN208417512U (en) * | 2018-06-08 | 2019-01-22 | 绵阳安立机械有限公司 | One bulb rises formula plug |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110605310A (en) * | 2019-09-10 | 2019-12-24 | 中冶陕压重工设备有限公司 | Method for plugging high-pressure oil hole of jaw sector plate of coiling machine |
| CN110665773A (en) * | 2019-09-29 | 2020-01-10 | 瑞安市科达汽车配件有限公司 | Processing technology of high-pressure flow environment-friendly integrated electric fuel pump integrated shell |
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