CN104882767B - Cold extruding process of high-speed rail electrical connector pin - Google Patents
Cold extruding process of high-speed rail electrical connector pin Download PDFInfo
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- CN104882767B CN104882767B CN201510288065.5A CN201510288065A CN104882767B CN 104882767 B CN104882767 B CN 104882767B CN 201510288065 A CN201510288065 A CN 201510288065A CN 104882767 B CN104882767 B CN 104882767B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Switches (AREA)
Abstract
The invention discloses a cold extruding process of a high-speed rail electrical connector pin, for solving the problem that the tensile strength of a conventional high-speed rail electrical connector pin cannot satisfy the tensile strength needed for high-speed driving of a high-speed train. The major technical points of the cold extruding process of the high-speed rail electrical connector pin are as follows: placing an intercepted TP1-Y phosphor deoxidized copper blank material in a vacuum heat treatment furnace for annealing processing, heating to a temperature of 700 to 800 DEG C, and performing thermal insulation for two to three hours; performing brush application of a water-soluble lubricant on the surface of the TP1-Y phosphor deoxidized copper blank material; after the TP1-Y phosphor deoxidized copper blank material is paced in a mold jacket for sealing, performing cold extruding for the first time by use of a hydraulic press; reversely performing cold extruding processing for the second time on the TP1-Y phosphor deoxidized copper blank material after the cold extruding of the first time; and heating a TP1-Y phosphor deoxidized copper workpiece to a temperature of 400 to 500 DEG C, performing thermal insulation for two to four hours, and then stopping the heating for air cooling. The cold extruding process of the high-speed rail electrical connector pin has the following advantages: the tensile strength after processing of a cold extruding technical mode is 300 to 400 MPa, the strength is increased by 30 to 40%, and the driving need of the high-speed train in a severe environment can be effectively met.
Description
Technical field
The present invention relates to the technical field of Cold Forging, particularly belongs to a kind of cold-extrusion technology of high ferro connector pin.
Background technology
In recent years, Chinese leader's visit, can all widely popularize the high ferro technology of China.High ferro has become China
One name cards, in fact, Chinese high ferro is deserved pride really.Many external technologies all by China's conversion and absorb, wherein making
For the adapter of important spare part, monopolized by overseas-funded enterprise always.
At present, developing rapidly with Chinese high ferro, the requirement to high ferro connector pin are also constantly to improve, and are passed
The high ferro connector pin of system is formed by bar is directly processed using numerically controlled lathe, and selected material is purple
Copper, and this kind of material its conductive effect is bad, moulding difference, and red copper is in the process of heating is converged, and showing for hydrogen disease easily occurs
As causing to cause part rupture occur in process, affecting the bulk strength of high ferro connector pin.
Therefore, in order to improve the conductive capability of high ferro adapter and prevent the appearance of hydrogen disease phenomenon, many producers are in production
During can select using being mixed into silver in red copper, be processed into such as TP1-Y phosphorized coppers, then with which as raw material, adopt
Numerically controlled lathe is directly processed into high ferro connector pin, but is although led using the high ferro connector pin after which molding
Electrical property is enhanced, while the appearance of hydrogen disease phenomenon can be also prevented, but as silver-colored soft material, and whole process do not have
There is the internal structure to high ferro connector pin to improve, so as to cause its tensile strength relatively low, show through many experiments,
Part Jing tested for tensile strength 270mpa obtained by way of directly being processed using bar, and high ferro is in the mistake run at high speed
Cheng Zhonghui produces powerful pulling force to high ferro adapter device contact pin, during long-play, if high ferro adapter is anti-
Not enough, high ferro connector pin cannot just keep good connective stability to tensile strength, therefore using traditional processing technique very
The requirement of the tensile strength that difficulty meets high ferro required for during running at high speed.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide one kind can improve high ferro electrical cnnector
The cold-extrusion technology of the tensile strength of contact pin.
For achieving the above object, the invention provides following technical scheme：A kind of cold-extruded of high ferro electrical cnnector contact pin
Pressure technique, it is characterised in that comprise the steps：
（1）Choose blank：TP1-Y phosphorized coppers；
（2）Base：TP1-Y phosphorized coppers bar is carried out into intercepting and forms stock；
（3）The TP1-Y phosphorized copper blanks for having intercepted are placed in vacuum heat treatment furnace and are made annealing treatment, be heated to
700-800 DEG C is incubated 2 ~ 3 hours, and temperature is down to less than 250 DEG C taking-up air coolings and obtains semi-finished product；
（4）Lubricated：In TP1-Y phosphorized copper blank surface brushing soluble oils；
（5）TP1-Y phosphorized copper semi-finished product after lubrication are placed in mould jacket after sealing, are carried out using hydraulic press
First time cold extrusion obtains first product；
（6）TP1-Y phosphorized copper blanks after first time cold extrusion are reversed into second cold extrusion processing；
（7）Stress relief annealing：By TP1-Y phosphorized coppers workpiece heat to 400 ~ 500 DEG C, 2 ~ 4 hours are incubated, Ran Houting
Fire carries out air cooling makes TP1-Y phosphorized copper workpiece be cooled to room temperature.
As preferred, step（5）In, cold-stamped pressure is 150 ~ 300MPa.
Preferably, the step（4）Handling process include:
A TP1-Y phosphorized coppers blank surface is cleaned by ()；
B the Cold extrusion lubricant is uniformly brushed or dipped to cleaned TP1-Y phosphorized coppers blank by ()；
（c）The TP1-Y phosphorized coppers blank that painting is brushed is carried out into drying and processing.
Preferably, uniformly brushing or dipping the thickness of the Cold extrusion lubricant in TP1-Y phosphorized coppers blank surface
For 0.1 ~ 0.3mm.
Tool has the advantage that the present invention compared to existing technology：By using its welding performance of TP1 phosphorized coppers and clod wash
Can be good, compared with common red copper of the prior art, general without " hydrogen disease " tendency, in heating, TP1-Y phosphorized coppers will not be with
Hydrogen or carbon monoxide are easily acted on the Red copper oxide (Cu2O) of crystal boundary and produce high-pressure steam or carbon dioxide, it is ensured that
TP1-Y phosphorized coppers blank will not occur rupture.Can process in reducing atmosphere, can very great Cheng using cold-stamped method
The tensile strength of part is improved on degree, compared with prior art, the tensile strength after cold-extrusion technology mode is processed is
352MPa, intensity increase by 30 ~ 40%, can effectively meet the needs that high ferro train is travelled in adverse circumstances.
Specific embodiment
Embodiment 1
A kind of cold-extrusion technology of high ferro electrical cnnector contact pin, comprises the steps：
（1）Choose blank TP1-Y phosphorized coppers；
（2）TP1-Y phosphorized coppers are intercepted using automatic band sawing machine, the length for intercepting each time is 70mm；
（3）The TP1-Y phosphorized copper blanks for having intercepted are placed in vacuum heat treatment furnace and are made annealing treatment, be heated to
700 DEG C are incubated 2 hours, and when temperature is down to less than 250 DEG C, TP1-Y phosphorized coppers blank is taken out carries out the air cooling of 1 ~ 2 hour
TP1-Y phosphorized copper blanks are made to be cooled to room temperature；
（4）Lubricated：In TP1-Y phosphorized copper blank surface brushing soluble oils；
（5）TP1-Y phosphorized copper semi-finished product after lubrication are placed in mould jacket after sealing, are carried out using hydraulic press
First time cold extrusion obtains first product；
（6）TP1-Y phosphorized coppers blank after first time cold extrusion is reversely carried out into second cold extrusion processing again, is obtained
To the high ferro electrical cnnector contact pin of finished product；
（7）Stress relief annealing：By TP1-Y phosphorized coppers workpiece heat to 400 DEG C, 2 hours are incubated, then ceasing fire is carried out
Air cooling makes TP1-Y phosphorized copper workpiece be cooled to room temperature.
Using the production technology of above-described embodiment 1, reach can the tensile strength of high ferro electrical cnnector contact pin
300MPa, with prior art ratio, makes high ferro electrical cnnector contact pin intensity improve 30%, can meet high ferro train at a high speed
Environment during operation needs, it is ensured that high ferro train has good connecing during running at high speed between electrical cnnector contact pin
Tactile performance, it is to avoid the phenomenon because loose contact occurs in the process of moving, in annealing process, its temperature is heated to 700 DEG C
It is incubated 2 hours afterwards, can so eliminates because of the residual stress of the generations such as metal cutting process, alignment process, cold forming, stablize zero
Shape and dimensional accuracy of the part in life-time service, compare 600 degree of the annealing temperature of existing processing technique, can improve TP1-Y
The plasticity of phosphorized copper, it is ensured that TP1-Y phosphorized coppers will not occur rupture in extrusion process, meanwhile, can also fining metal
Grain, enables TP1-Y phosphorized coppers to obtain than larger deflection, facilitates extrusion molding.Using the general nothing of TP1-Y phosphorized coppers
" hydrogen disease " tendency, in heating, TP1-Y phosphorized coppers easily will not be made with the Red copper oxide (Cu2O) of crystal boundary with hydrogen or carbon monoxide
With and produce high-pressure steam or carbon dioxide, it is ensured that TP1-Y phosphorized coppers blank will not occur rupture.In order to suppress
The precipitation of the free carbide of TP1-Y phosphorized coppers makes which obtain quasi-eutectoid tissue, takes off its TP1-Y phosphorus using air blast or oil cooling
When the temperature of oxygen copper is down to 250 DEG C, taking-up carries out the air cooling of 1 ~ 2 hour makes TP1-Y phosphorized copper blanks be cooled to room temperature.It is logical
Cross the stress relief annealing of TP1-Y phosphorized coppers workpiece heat to 400 DEG C, can remove what part was produced in Cold Extrusion Process
Internal stress, then carries out the insulation of 2 hours, can be with Reducing distortion and the problem of cracking, and then truce carries out air cooling makes TP1-Y phosphorus
Deoxidized cooper workpiece is cooled to room temperature, improves the integrally-built stability of high ferro electrical cnnector contact pin.
Embodiment 2
A kind of cold-extrusion technology of high ferro electrical cnnector contact pin, comprises the steps：
（1）Choose blank TP1-Y phosphorized coppers；
（2）TP1-Y phosphorized coppers are intercepted using automatic band sawing machine, the length for intercepting each time is 70mm；
（3）The TP1-Y phosphorized copper blanks for having intercepted are placed in vacuum heat treatment furnace and are made annealing treatment, be heated to
750 DEG C are incubated 3 hours, and when temperature is down to less than 250 DEG C, TP1-Y phosphorized coppers blank is taken out carries out the air cooling of 1 ~ 2 hour
TP1-Y phosphorized copper blanks are made to be cooled to room temperature；
（4）Lubricated：In TP1-Y phosphorized copper blank surface brushing soluble oils；
（5）TP1-Y phosphorized copper semi-finished product after lubrication are placed in mould jacket after sealing, are carried out using hydraulic press
First time cold extrusion obtains first product；The height of the first product is 50mm；
（6）TP1-Y phosphorized coppers blank after first time cold extrusion is reversely carried out into second cold extrusion processing again, is obtained
To the high ferro electrical cnnector contact pin of finished product；
（7）Stress relief annealing：By TP1-Y phosphorized coppers workpiece heat to 450 DEG C, 3 hours are incubated, then ceasing fire is carried out
Air cooling makes TP1-Y phosphorized copper workpiece be cooled to room temperature.
Using the production technology of above-described embodiment 2, reach can the tensile strength of high ferro electrical cnnector contact pin
375MPa, with prior art ratio, makes high ferro electrical cnnector contact pin intensity improve 33%, can better meet high ferro train
Environment in high-speed cruising needs, and in annealing process, its temperature is incubated 3 hours after being heated to 750 DEG C, so can be preferable
Elimination because of the residual stress of the generations such as metal cutting process, alignment process, cold forming, shape of the stabilizer elements in life-time service
Shape and dimensional accuracy, compare embodiment one, can be with the moulding of larger raising TP1-Y phosphorized coppers, it is ensured that TP1-Y phosphorized coppers
Will not occur in extrusion process rupture, meanwhile, can also fining metal granule, enable TP1-Y phosphorized coppers to obtain bigger change
Shape amount.Using TP1-Y phosphorized coppers it is general without " hydrogen disease " tendency, in heating, TP1-Y phosphorized coppers will not be with hydrogen or an oxygen
Change carbon easily to act on the Red copper oxide (Cu2O) of crystal boundary and produce high-pressure steam or carbon dioxide, it is ensured that TP1-Y phosphorus takes off
Oxygen copper base material will not occur rupture.In order to the precipitation for suppressing the free carbide of TP1-Y phosphorized coppers makes which obtain quasi-eutectoid tissue,
When making the temperature of its TP1-Y phosphorized copper be down to 250 DEG C using air blast or oil cooling, taking-up carries out the air cooling of 1 ~ 2 hour to be made
TP1-Y phosphorized copper blanks are cooled to room temperature.By by the stress relief annealing of TP1-Y phosphorized coppers workpiece heat to 450 DEG C, can
To remove the internal stress for all producing in Cold Extrusion Process, the insulation of 3 hours is then carried out, can be with Reducing distortion and cracking
Problem, then truce carries out air cooling makes TP1-Y phosphorized copper workpiece be cooled to room temperature, improves high ferro electrical cnnector contact pin
Integrally-built stability.
Embodiment 3
A kind of cold-extrusion technology of high ferro electrical cnnector contact pin, including,
（1）Choose blank TP1-Y phosphorized coppers；
（2）TP1-Y phosphorized coppers are intercepted using automatic band sawing machine, the length for intercepting each time is 70mm；
（3）The TP1-Y phosphorized copper blanks for having intercepted are placed in vacuum heat treatment furnace and are made annealing treatment, be heated to
800 DEG C are incubated 4 hours, and when temperature is down to less than 250 DEG C, TP1-Y phosphorized coppers blank is taken out carries out the air cooling of 1 ~ 2 hour
TP1-Y phosphorized copper blanks are made to be cooled to room temperature；
（4）Lubricated：In TP1-Y phosphorized copper blank surface brushing soluble oils；
（5）TP1-Y phosphorized copper semi-finished product after lubrication are placed in mould jacket after sealing, are carried out using hydraulic press
First time cold extrusion obtains first product；The height of the first product is 50mm；
（6）TP1-Y phosphorized coppers blank after first time cold extrusion is reversely carried out into second cold extrusion processing again, is obtained
To the high ferro electrical cnnector contact pin of finished product；
（7）Stress relief annealing：By TP1-Y phosphorized coppers workpiece heat to 500 DEG C, 4 hours are incubated, then ceasing fire is carried out
Air cooling makes TP1-Y phosphorized copper workpiece be cooled to room temperature.
Using the production technology of above-described embodiment 3, reach can the tensile strength of high ferro electrical cnnector contact pin
400MPa, with prior art ratio, makes high ferro electrical cnnector contact pin intensity improve 35%, can better meet high ferro train
Environment in high-speed cruising needs, and in annealing process, its temperature is incubated 3 hours after being heated to 800 DEG C, so can be effective
Elimination part is improved because of the residual stress of the generations such as metal cutting process, alignment process, cold forming, greatly in life-time service
When shape and dimensional accuracy, compare embodiment two, the moulding effect of TP1-Y phosphorized coppers can be made to reach optimum state, protect
Card TP1-Y phosphorized coppers will not occur in extrusion process rupture, meanwhile, can also fining metal granule, make TP1-Y phosphorized coppers
Bigger deflection can be obtained.Using TP1-Y phosphorized coppers it is general without " hydrogen disease " tendency, the TP1-Y phosphorized coppers in heating
Easily will not act on the Red copper oxide (Cu2O) of crystal boundary with hydrogen or carbon monoxide and produce high-pressure steam or carbon dioxide,
Ensure that TP1-Y phosphorized coppers blank will not occur rupture.In order to the precipitation for suppressing the free carbide of TP1-Y phosphorized coppers obtains which
Quasi-eutectoid tissue is obtained, when making the temperature of its TP1-Y phosphorized copper be down to 250 DEG C using air blast or oil cooling, taking-up carries out 1 ~ 2
The air cooling of hour makes TP1-Y phosphorized copper blanks be cooled to room temperature.By by TP1-Y phosphorized coppers workpiece heat to 500 DEG C
Stress relief annealing, can remove the internal stress that part is produced in Cold Extrusion Process, then carry out the insulation of 4 hours, can subtract
The problem of small deformation and cracking, then truce carries out air cooling makes TP1-Y phosphorized copper workpiece be cooled to room temperature, greatly improves
The integrally-built stability of high ferro electrical cnnector contact pin.
Further optimize above-mentioned technical proposal, step（5）In, cold-stamped pressure is 150 ~ 300MPa.At this pressure
Carrying out first time cold extrusion when, it is ensured that TP1-Y phosphorized coppers blank extruding when can keep good deformation quantity so that
TP1-Y phosphorized coppers blank will not cause internal structure to be damaged because pressure is excessive, affect cold extrusion shaped effect.
Further optimize above-mentioned technical proposal, in TP1-Y phosphorized copper blank surface brushing Cold extrusion lubricants；In this reality
In applying example, selected Cold extrusion lubricant is HR-35A soluble oils, when in use, first to TP1-Y phosphorized copper bases
Material carries out surface clean, makes TP1-Y phosphorized coppers blank surface not remain excessive impurity, affects lubricant effect, then
Cleaned TP1-Y phosphorized coppers blank surface is uniformly brushed or is dipped in HR-35A soluble oils, made
TP1-Y phosphorized copper blank surfaces are completely covered with HR-35A soluble oils, so can ensure that in cold extrusion, TP1-
Y phosphorized coppers blank surface will not produce power consumption and the abrasion of mould, and surface is coated with HR-35A water solublity profit preferably
The TP1-Y phosphorized copper blanks of lubrication prescription are dried using hot-air blower.By being reached using the lubricant voltage endurance capability
More than 200MPa, lubricant fully will be covered on extruding metal surface, keep extremely low coefficient of friction, while also successfully taking
For phosphatization-saponification process technique（Oil removing is become rusty, and -- -- -- -- -- water cleaning -- is dried -- saponification -- phosphatization for water cleaning for pickling for water cleaning
Air-dry）, rigors of the non-ferrous metal cold forming to lubrication can be met.And once will complete：Surface treatment -- water heating -- leaching
Apply this agent -- the serial operation such as dry.The work pieces process production big suitable for degree of extending, deformation rate is high, curved surface is complicated, effectively protects
Card processing precision of products, improves workpiece surface quality, protects die surface to greatest extent, extends the mold use life-span.Lubrication
Dosage form into film it is thin, single-piece lubrication low cost, cost savings 30% ~ 45% of the cost than phosphatization-saponification.
Further optimize above-mentioned technical proposal, the cold-extruded is uniformly brushed or dip in TP1-Y phosphorized coppers blank surface
The thickness of pressure lubricating agent is 0.1 ~ 0.3mm.Can so make TP1-Y phosphorized coppers blank surface form lubricating layer, can make
TP1-Y phosphorized copper blanks its surface in Cold Extrusion Process will not cause asking for squeezing effect difference because coefficient of friction is excessive
Topic, meanwhile, the thickness of the Cold extrusion lubricant of the TP1-Y phosphorized copper blank surfaces is difficult blocked up.
For 100T, power of motor is the unit of the hydraulic press adopted in embodiment one, embodiment two and embodiment three
7.5KW, pressing speed are 6-15Mm/s, and opening speed is 150Mm/s.Meet required for TP1-Y phosphorized copper blank cold extrusions
Extruding force and pressing speed.
By using processing technique in above-described embodiment, TP1-Y phosphorized copper blanks can be eliminated after the annealing process
Residual stress, improves the shape and dimensional accuracy of TP1-Y phosphorized copper blanks, it is to avoid because TP1-Y during following process
The stress of phosphorized copper blank and the problem that causes squeezing effect not good, then in its external coating HR-35A water-soluble lubricatings
Agent, can make TP1-Y phosphorized coppers blank form composite lubricating film, be that the TP1-Y phosphorized copper blanks that will be put in mould do
Good lubrication prepares, and reduces coefficient of friction when TP1-Y phosphorized coppers blank carries out first time cold extrusion in the mould, makes TP1-Y
Phosphorized copper blank surface will not produce power consumption and the abrasion of mould, improve the forming quality of TP1-Y phosphorized copper blanks,
Then using backward extrusion carry out second cold extrusion can greatly improve on the basis of first time cold-stamped TP1-Y phosphorus take off
The forming effect of oxygen copper base material, finally carries out stress relief annealing and can eliminate TP1-Y phosphorized coppers blank pressing through in cold-extruded twice
Residual stress in journey, improves the integrally-built stability of high ferro electrical cnnector contact pin so that high ferro electrical cnnector
The tensile strength of contact pin meets high ferro train and requires in the process of moving.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned enforcement
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of cold-extrusion technology of high ferro electrical cnnector contact pin, it is characterised in that comprise the steps：
（1）Choose blank：TP1-Y phosphorized coppers；
（2）Base：TP1-Y phosphorized coppers bar is carried out into intercepting and forms stock；
（3）The TP1-Y phosphorized copper blanks for having intercepted are placed in vacuum heat treatment furnace and are made annealing treatment, be heated to 700-
800 DEG C are incubated 2 ~ 3 hours, and temperature is down to less than 250 DEG C taking-up air coolings and obtains semi-finished product；
（4）Lubricated：In TP1-Y phosphorized copper blank surface brushing soluble oils；
（5）TP1-Y phosphorized copper semi-finished product after lubrication are placed in mould jacket after sealing, first are carried out using hydraulic press
Secondary cold extrusion obtains first product；
（6）TP1-Y phosphorized copper blanks after first time cold extrusion are reversed into second cold extrusion processing；
（7）Stress relief annealing：By TP1-Y phosphorized coppers workpiece heat to 400 ~ 500 DEG C, be incubated 2 ~ 4 hours, then cease fire into
Row air cooling makes TP1-Y phosphorized copper workpiece be cooled to room temperature.
2. the cold-extrusion technology of a kind of high ferro electrical cnnector contact pin according to claim 1, it is characterised in that：Step
（5）In, cold-stamped pressure is 150 ~ 300MPa.
3. the cold-extrusion technology of a kind of high ferro electrical cnnector contact pin according to claim 1, it is characterised in that：The step
Suddenly（4）Handling process include:
A TP1-Y phosphorized coppers blank surface is cleaned by ()；
B the Cold extrusion lubricant is uniformly brushed or dipped to cleaned TP1-Y phosphorized coppers blank by ()；
C the TP1-Y phosphorized coppers blank that painting is brushed is carried out drying and processing by ().
4. the cold-extrusion technology of a kind of high ferro electrical cnnector contact pin according to claim 3, it is characterised in that：In TP1-
It is 0.1 ~ 0.3mm that the thickness of the Cold extrusion lubricant is uniformly brushed or dipped to Y phosphorized coppers blank surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288065.5A CN104882767B (en) | 2015-05-30 | 2015-05-30 | Cold extruding process of high-speed rail electrical connector pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288065.5A CN104882767B (en) | 2015-05-30 | 2015-05-30 | Cold extruding process of high-speed rail electrical connector pin |
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| Publication Number | Publication Date |
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| CN104882767A CN104882767A (en) | 2015-09-02 |
| CN104882767B true CN104882767B (en) | 2017-04-12 |
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| CN1790822A (en) * | 2004-12-15 | 2006-06-21 | 陈煜初 | Electric insert-pull element and its manufacturing method |
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| CN102856766A (en) * | 2012-09-28 | 2013-01-02 | 乐清市易捷通电子有限公司 | Production method and device of cold-pressed terminal |
| CN203747080U (en) * | 2013-12-27 | 2014-07-30 | 上海徕木电子股份有限公司 | Direct-insertion type square terminal |
| CN104466605A (en) * | 2014-12-05 | 2015-03-25 | 江苏威鹰机械有限公司 | Technology for manufacturing wiring terminal of new energy automobile electronic control system |
-
2015
- 2015-05-30 CN CN201510288065.5A patent/CN104882767B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315067A (en) * | 1999-10-05 | 2001-09-26 | Smk株式会社 | Terminal connector and method of manufacturing the same |
| CN1452653A (en) * | 2000-09-05 | 2003-10-29 | 本田技研工业株式会社 | Aqueous one step type lubricating agent for efficient cold forging |
| CN1790822A (en) * | 2004-12-15 | 2006-06-21 | 陈煜初 | Electric insert-pull element and its manufacturing method |
| CN101944674A (en) * | 2010-08-03 | 2011-01-12 | 宁波奉欣电力金具制造有限公司 | Manufacturing method of copper-aluminum composite terminal and composite terminal manufactured thereby |
| CN102856766A (en) * | 2012-09-28 | 2013-01-02 | 乐清市易捷通电子有限公司 | Production method and device of cold-pressed terminal |
| CN203747080U (en) * | 2013-12-27 | 2014-07-30 | 上海徕木电子股份有限公司 | Direct-insertion type square terminal |
| CN104466605A (en) * | 2014-12-05 | 2015-03-25 | 江苏威鹰机械有限公司 | Technology for manufacturing wiring terminal of new energy automobile electronic control system |
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| CN104882767A (en) | 2015-09-02 |
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