EP3137640A1 - Contact electrique miniature de haute stabilite thermique - Google Patents
Contact electrique miniature de haute stabilite thermiqueInfo
- Publication number
- EP3137640A1 EP3137640A1 EP15723270.3A EP15723270A EP3137640A1 EP 3137640 A1 EP3137640 A1 EP 3137640A1 EP 15723270 A EP15723270 A EP 15723270A EP 3137640 A1 EP3137640 A1 EP 3137640A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical contact
- alloy
- advantageously
- contact
- strands
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/12—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by twisting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
Definitions
- the present invention relates to the field of electrical contacts Twist-Pin type (Twist-Pin technology or twisted pin) with high thermal stability used in connectors of the micro-D family according to Mil-DTL-83513.
- connection points In the interest of making the interconnection of electronic systems more compact, the density of connection points is becoming more and more a sought-after performance, which has led to the miniaturization not only of the transmission cable, but also of the connector.
- Mil-DTL-83513 defines a family of male and female rectangular connectors, the connecting parts of which are D-shaped. This family, called micro-D, is characterized by a pitch of 1.27 mm, the step representing the distance between two adjacent connection points.
- connection points or the number of contacts which are respectively 9, 15, 21, 25, 31, 37, 51 and 100. These contacts are arranged in the connector in 2 or 3 rows. (figure 1).
- the retention is ensured by the male contact, the female contact being a tube.
- the technologies used have a bulge that ensures lateral contact with the tube.
- One of them is called “Twist-Pin”, noted TP.
- This consists of first making a strand compound of copper and beryllium copper, and then crimp it into a copper or beryllium copper tube (as disclosed for example in US Patents 3,255,430, US 3,319,217, US 3402466 and WO82 / 03140).
- the bulge is made by a mechanical operation called “bump” which removes at a fair level the peripheral strands of the strand.
- the whole contact is finally electrolytically coated with a nickel undercoat and then a final layer of gold according to the MIL-G-45204 standard.
- Figure 2 is schematically illustrated this male twist pin contact.
- Twist-Pin contact it is therefore necessary to rethink the construction of the Twist-Pin contact for its high temperature applications, particularly in order to obtain a contact capable of holding at 260 ° C for 2000 hours while respecting the main requirements of the Mil-DTL standard. 83513. Few data are available on the creep behavior of materials at 260 ° C. The inventors have therefore turned to alloys having good mechanical characteristics and preferably to structural hardening because this often guarantees better mechanical characteristics in temperature. Indeed, the over-tempering temperature is generally higher than the recrystallization temperature. It is further necessary that such materials have good conductivity to be used as electrical contact and that they can be soldered with copper strands.
- Ni-Cr-Ti-Al alloys are known from the prior art for use as a high temperature spring but for extreme temperatures, well above the requirements (> 700 ° C).
- their use for the transmission of a current is not obvious. Indeed, they have limited electrical conduction (of the order 1-2% IACS). This does not facilitate their use as an electrical contact.
- IACS electrical conduction
- the inventors have discovered that it is possible to obtain contacts capable of holding at 260 ° C. for 2000 hours while respecting the main requirements of the Mil-DTL-83513 standard with the aid of a strand of the electrical terminal of the male contact comprising (in particular constituted by) 3 central Ni or Cu strands and 7 peripheral strands of Ni-Cr-Ti-AI alloy.
- the present invention therefore relates to a twist-pin type electrical contact (or "twist-pin” or TP) comprising an electrical terminal consisting of a strand comprising (advantageously constituted by) three central strands of nickel (Ni) or copper (Cu ) and 7 peripheral Ni-Cr-Ti-Al alloy strands and a bulge (or “bump") in the central portion, said alloy possibly possibly further comprising Co and / or Mo.
- electrical contact is meant in the sense of the present invention a part or a set of parts, adapted to be attached to one end of a conductive element, to ensure electrical contact between the conductive element and another conductive element.
- This "other conductive element” is generally also an electrical contact.
- the female contact may simply be in the form of a tube.
- the male contact is generally constituted essentially by an electrical contact terminal (conductive part, male or female), and a conductive joining piece (more simply called “the junction") on which is fixed mechanically and electrically the terminal, the junction being further arranged to be mechanically and electrically attachable to a conductive member.
- conductive element is broadly intended to cover any body of which at least part is electrically conductive; it may include an electrical wire, or a contact terminal.
- terminal or "contact terminal” here means a part (or portion of a part) intended to come into contact with another part (another terminal) so as to establish an electrical contact.
- twisted-pin male electrical contact means any male electrical contact according to the present invention using Twist-Pin (or TP) technology.
- Twist-Pin or TP
- the manufacture of a female contact is simply to produce a tube, by high-precision machining.
- a first conductive element is produced which is an electrical terminal constituted by a strand comprising one or more central strands (in the case of the present invention 3 strands central) and peripheral strands (in the case of the present invention 7 peripheral strands), and having a bulge (called “bump") in the central part (In this technology, the bulge is made by a mechanical operation called “bump” which removes at a fair level the external strands of the strand); a tube is manufactured by a high-precision machining operation identical to the manufacture of the female contact; the strand is fixed in one end of the tube.
- the male electrical contact 1 therefore comprises a strand 2 provided with a bulge or "bump" 3 in the central portion, the strand forming the electrical terminal.
- This electrical terminal is inserted in a cylinder 4 which is provided with an electric wire 5.
- the peripheral strands are helically wound around the central strands of the strand.
- the male electrical contact according to the present invention can therefore be made by methods well known to those skilled in the art according to TP technology.
- the 7 peripheral strands of the strand are made of Ni-Cr-Ti-Al alloy.
- This alloy may optionally contain Cobalt (Co) and / or Molybdenum (Mo). It can thus be for example a Ni-Cr-Co-Ti-Al alloy, or Ni-Cr-Co-Mo-Ti-AI.
- it is a Ni-Cr-Co-Ti-Al alloy.
- This alloy may also contain less than 2% by weight relative to the total weight of the iron alloy (Fe).
- the Ni-Cr-Ti-Al alloy consists essentially of (advantageously consists of), in percentage by weight relative to the total weight of the alloy,
- Chromium 15 - 25%, advantageously 17 - 22%, more particularly 18 - 21%, for example 18-20%;
- Titanium 1.5 - 3.5%, advantageously 1.7 - 3.4%, more particularly 1.8 -
- Cobalt 0 - 25%, advantageously 2 - 23%;
- Aluminum 1 - 2%, advantageously 1 - 1.8%, more particularly 1.2 -
- Molybdenum 0 - 11%, advantageously 0 - 10.5%;
- Nickel balance, advantageously 50 - 80%, more particularly 51 - 79.5%, for example 52.6 - 79.2%, in particular 53 - 60%, more particularly 53 -
- unavoidable impurities are chosen from (in percentage by weight relative to the total weight of the alloy)
- Mn (advantageously 1 1%, more preferably 0,1 0.1%, in particular 0,0 0.030%)
- the impurities are chosen from B, Zr, Cu, Fe, S, Si, Mn, C, Pb and / or P.
- the percentage of overall impurity (relative to the total weight of the alloy) is therefore in general ⁇ 10%, advantageously ⁇ 8%, more preferably ⁇ 6%, in particular ⁇ 5%, more particularly ⁇ 3%, for example ⁇ 2%.
- the Nickel + Cobalt content is between 62 and 83%, advantageously between 64.5 and 81.5%, for example 69-75%.
- the alloy comprises cobalt, in particular in a content of between 2 and 23% by weight relative to the total weight of the alloy, more particularly between 10 and 22%, even more particularly between 12 and 21%. for example between 15 and 21%.
- the alloy comprises molybdenum, in particular in a content of between 3.5 and 11% by weight relative to the total weight of the alloy, advantageously between 4 and 10.5%, for example between 9 and 10.5%.
- This alloy is in particular commercially available from Alloy wire international under the references Nimonic 80A, Nimonic 90, Waspaloy and Rene 41.
- the three central strands of the strand are assembled with a pitch of between 1 and 5 mm left, in particular between 1 and 3 mm left, advantageously it is 2 mm left.
- the seven peripheral strands are assembled around the central strands with a pitch of between 1 and 5 mm straight, in particular between 1 and 3 mm, advantageously it is 2.4 mm straight.
- the three central strands of the strand are assembled with a pitch of between 1 and 5 mm left, in particular between 1 and 3 mm left, advantageously it is 2 mm left, and the seven peripheral strands are assembled around with a pitch of between 1 and 5 mm straight, in particular between 1 and 3 mm right advantageously it is 2.4 mm straight.
- the three central strands of the strand of the contact according to the present invention have a diameter of between 0.069 and 0.109 mm, in particular between 0.079 and 0.099 mm, advantageously it is 0.089 mm.
- the seven peripheral strands of the strand of the contact according to the present invention have a diameter of between 0.1 and 0.160 mm, in particular between 0.110 and 0.137, advantageously it is 0.127 mm.
- the three central strands of the strand of the contact according to the present invention have a diameter of between 0.069 and 0.109 mm, in particular between 0.079 and 0.099 mm, advantageously it is 0.089 mm, and the seven peripheral strands of the The strand of the contact according to the present invention has a diameter of between 0.1 and 0.160 mm, in particular between 0.110 and 0.137 mm, advantageously it is 0.127 mm.
- the strand of the contact according to the present invention is coated with an electrolytic gold layer, advantageously with a thickness of between 1-6 ⁇ , more advantageously in order to have the maximum acceptable contact resistance.
- an electrolytic gold layer advantageously with a thickness of between 1-6 ⁇ , more advantageously in order to have the maximum acceptable contact resistance.
- This coating is done by methods well known to those skilled in the art. Indeed the inventors have surprisingly found that a layer of 2.6 m electrolytic gold on the strand of the contact according to the present invention was sufficient to achieve the contact resistance values given by the standard MIL-DTL-83513 .
- the contact strand according to the present invention does not include an underlayer between the alloy and the electrolytic gold.
- the temperature of use of the contact according to the present invention is 260 260 ° C, advantageously for a period of use of at least 2000 hours.
- the inventors have realized that until there having a temperature of 260 ° C, the bulge of the central part of the strand (or "bump") of the contact according to the present invention did not undergo a creep phenomenon, even after at least 2000 hours of use by insertion into a contact female. Connections and disconnections are possible between uses without loss of retention.
- the minimum separation force defined in MIL-DTL-83513 is thus respected even after aging. There is therefore no risk of contact cut-off and therefore of cut-off in the signal transmitted at these temperatures during shocks or vibrations.
- the present invention therefore also relates to the use of the male electrical contact according to the present invention in a micro-D connector, advantageously for applications at a service temperature ⁇ 260 ° C.
- micro-D connector means any connector governed by the Mil-DTL-83513 standard and characterized by a spacing of 1.27 mm between neighboring conductors, the retention being ensured by the male contact, the female connector being a tube. It is a family of rectangular male and female connectors whose connecting parts have a D-shape.
- the central strands 3 of the contact strand according to the present invention are made of copper and the contact according to the invention has a magnetism value ⁇ InT according to the GFSC-S-311 standard.
- This feature is important in electronics in many applications, including offshore and underground exploration.
- the present invention also relates to the use of the male electrical contact according to the invention in which the 3 central strands of the strand are copper for applications in offshore or underground exploration.
- the present invention will be better understood on reading the description of the figures and examples which follow, which are given by way of non-limiting indication.
- Figure 1 shows a perspective diagram of an example of a micro-D female connector 15 points according to Mil-DTL-83513.
- FIG. 2 represents a schematic side view of a twisted pin type electrical contact (Twist-Pin) 1 comprising a strand 2 provided with a bulge or "bump" 3 in the central portion, the strand forming the electrical terminal.
- This electrical terminal is inserted in a cylinder 4 which is provided with an electric wire 5.
- FIG. 3 represents a photo of a twisted pin type electrical contact (Twist-Pin) without electric wire according to FIG. 2, the 3 central strands of the strand are made of Cu and the 7 peripheral strands of CuBeCo alloy before being in an oven ( Figure 3A) and after staying in an oven at 260 ° C in an ambient atmosphere for 100 hours of coupling with a female contact ( Figure 3 B) (Comparative Example 1)
- FIG. 4 represents a photo of a twisted pin-type electrical contact (Twist-Pin) without an electric wire according to FIG. 2, the central strands of which are in Cu and the 7 peripheral strands in Cu-Ni-Sn alloy. - Mn before stay in an oven ( Figure 4A) and after drying in an oven at 260 ° C in an ambient atmosphere for 100 hours of coupling with a female contact ( Figure 4B) (Comparative Example 2).
- FIG. 5 shows the measurement according to the MIL-DTL-83513 standard on 10 male twisted pin electrical contacts (Twist-Pin) according to FIG. 2 of which the 3 central strands of the strand are in Cu and the 7 peripheral strands in Cu-Ni-Sn-Mn alloy of the separation force in N (Fmax, Fmin and average F) as a function of the time of stay in an oven (h hour) at 260 ° C. in an ambient atmosphere compared to the minimum force in absolute value to be according to the standard MIL-DTL-83513 (standard maximum) (comparative example 2).
- FIG. 6 represents a photo of a twisted pin type electrical contact (Twist-Pin) without electrical wire according to FIG. 2, the central and the peripheral 7 strands of the strand being made of Au-Cu-Pt-Ag alloy. -Zn before stay in an oven ( Figure 6A) and after drying in an oven at 260 ° C in an ambient atmosphere for 100 hours of coupling with a female contact ( Figure 6B) (Comparative Example 3).
- FIG. 7 represents a photo of a twisted pin type electrical contact (Twist-Pin) without electrical wire according to FIG. 2, the central strands of which are of Ni and the peripheral strands of Ni-Cr20-Col8-alloy.
- Ti-AI before staying in an oven ( Figure 7A) and after staying in an oven at 260 ° C in an ambient atmosphere for 2000 hours of coupling with a female contact ( Figure 7B) (Example 1).
- FIG. 8 represents the measurement according to the MIL-DTL-83513 standard on 10 twisted-pin male electrical contacts (Twist-Pin) according to FIG. 2, whose 3 central strands of the strand are made of Ni and the peripheral strands of Ni alloy.
- FIG. 9 represents a photo of a twisted pin-type electric contact (Twist-Pin) without electric wire according to FIG. 2, in which the 3 central strands of the strand are made of Cu and the peripheral strands of Ni-Cr20-Col8- alloy.
- Ti-AI before stay in an oven ( Figure 9A) and after staying in an oven at 260 ° C in ambient atmosphere for 2000 hours of coupling with a female contact (Figure 9B) (Example 5).
- FIG. 10 represents the measurement according to the MIL-DTL-83513 standard on 10 twist-pin type male electrical contacts according to FIG. 2, in which the 3 central strands of the strand are in Cu and the peripheral strands in Ni alloy.
- -Cr20-Col8-Ti-AI of the separation force (Fmax, Fmin and average F) as a function of the oven residence time (h: hour) at 260 ° C in ambient atmosphere compared to the minimum force in absolute value at according to MIL-DTL-83513 (max standard) (Example 5).
- Fig. 11 shows the wiring diagram for measurement of contact resistance according to MIL-DTL-83513 (Example 6)
- FIG. 12 represents the evolution of the low intensity contact resistance values in mOhm (measured at ambient temperature with the device of FIG. 11) with the time (in hours) that the male connector has passed to the oven at 260 ° C., coupled to a female connector for a connector according to the invention (with contact Cu and Ni-Cr20-Col 8 -Ti-Ti-AI according to Example 7) and a connector of the prior art (with contacts Cu and Cu-Be Toron -Co according to Comparative Example 1) (Example 9).
- Examples 1 represent the evolution of the low intensity contact resistance values in mOhm (measured at ambient temperature with the device of FIG. 11) with the time (in hours) that the male connector has passed to the oven at 260 ° C., coupled to a female connector for a connector according to the invention (with contact Cu and Ni-Cr20-Col 8 -Ti-Ti-AI according to Example 7) and a connector of the prior art (with contacts Cu and Cu-Be Toron -Co according to Comparative Example
- Cu-Be-Co Cu-Bel, 8-Co0 , 2
- the mechanical characteristics of the alloy are summarized in Table 1 below: Table 1:
- the three central strands of the strand are assembled with a pitch of 2mm left, then the seven strands around are assembled with a pitch of 2.4mm straight.
- the tube is made of copper.
- the contacts TP are then inserted into female contacts of internal diameter 0.573 mm.
- the aging takes place at 260 ° C. in an ambient atmosphere for 100 hours over 10 pairs of contacts.
- Visual observation shows that the contact bump is narrowed after aging ( Figure 3). After aging, the bump is visually observed on these contacts and the insertion force is measured in a 0.561 mm diameter rod and the separation force of the contacts in a 0.584 mm diameter rod according to the MIL-DTL standard. 83513G.
- Table 2 The results are summarized in Table 2 below:
- the force of engagement is divided by 4 when comparing the value before and after stay in an oven, that of separation is divided by 7.
- the standard MIL-DTL-83513G stipulates a maximum insertion force of 1.67 N and a minimum separation force of 0.14 N in absolute value.
- the separation values obtained after 100 h at 260 ° C. are therefore below the limit of the standard. In conclusion, this contact can not be used for applications at 260 ° C.
- TP contacts similar to those of Comparative Example 1 are made but using for the 7 peripheral strands a copper, nickel, tin and manganese (Cu-Ni-Sn-Mn: Cu-Nil3-Sn7-Mn0.15) from Berda (reference Nibrodal 138), the characteristics of which are given in Table 3 below.
- a copper, nickel, tin and manganese Cu-Ni-Sn-Mn: Cu-Nil3-Sn7-Mn0.15
- Berda reference Nibrodal 138
- the thermal aging is carried out at 260 ° C. under the same conditions as in Comparative Examples 1 and 2. After aging, as in the above-mentioned comparative examples, the visual observation and the measurement of the insertion and separation. The results are collated in Table 6 below.
- Example 1 Ni-strand and Ni-Cr20-Col8-Ti-Al (UNS N07090) - mechanical aspect
- Thermal aging is carried out at 260 ° C. in an ambient atmosphere for 2000 hours at these pairs of contact TP-female contact. In this example, 60 pairs were tested. After aging, as in the preceding Comparative Examples, the contact TP of the female contact is made visible and the visual observation and the measurement of the insertion and separation forces are carried out. The results are collated in Table 9 below.
- this construction can also be used for applications at 260 ° C.
- TP contacts of construction similar to the preceding examples 1 and 2 are made but with 7 peripheral Ni-Cr20-Col4-Mo-Ti-AI alloy strands available from Alloy wire international under the reference Waspaloy, whose characteristics are shown in Table 12 below and the exact composition in Table 13 below.
- this construction can also be used for applications at 260 ° C.
- TP contacts of construction similar to the preceding examples 1 to 3 are made, but with 7 peripheral strands made of Ni-Cr19-Coll-Mo-Ti-Al alloy, available from Alloy wire international under reference René 41, whose characteristics are shown in Table 14 below and the exact composition in Table 15 below.
- this construction can also be used for applications at 260 ° C.
- Example 5 (Cu and Ni-Cr20-Col8-Ti-Al Strand - Mechanical Aspect)
- TP contacts of construction similar to the preceding examples 1-4 are made but using 3 central copper strands and 7 peripheral Ni-Cr20-Col8-Ti-AI alloy strands available from the company Alloy Wire International under the reference Nimonic 90, whose characteristics are shown in Table 7 above and the exact composition in Table 8 above.
- Thermal aging is carried out at 260.degree. C. in an ambient atmosphere for 2000 hours at female TP-contact contacting moments. After aging, as in the preceding Examples 1-4, each TP contact of the female contact is made visible, and the visual observation and the measurement of the insertion and separation forces are carried out. The results are summarized in Table 16 below.
- TP contacts of construction similar to Example 1 are made on which a surface treatment is additionally applied. This consists of an electrolytic gold coating with a thickness of about 1.3 ⁇ m.
- Contact resistance measurements are made according to the wiring diagram presented in FIG. 11, as specified in the MIL-DTL-83513 standard. The values given in parentheses are in mm. An AWG26 gauge wire was used for wiring. The test is performed at room temperature for two imposed intensities. These and the conditions to be met according to the standard are presented in Table 17 below.
- TP contacts of construction identical to the preceding Subexample 6a are made, but with an electrolytic coating of gold having a thickness of about 2 ⁇ m.
- the same tests were performed as in the preceding sub-example 6a. The results are shown in Table 19 below.
- Example 7 (Cu and Ni-Cr20-Cu8-Ti-Al Toron - Contact Resistance) A TP contact of construction similar to Example 5 was made. A gold electrolytic coating with a thickness of approximately 2.6 ⁇ m is also realized. The same tests were performed as in the previous sub-examples 6a-6c. The results are shown in Table 21 below. Table 21
- Example 8 Cu and Ni-Cr20-Col8-Ti-Al Strand - Non-Magnetic Aspect
- residual magnetism measurements were carried out according to the procedure defined in the GFSC-S-311 standard, using a three-dimensional magnetometer. First, the initial magnetic field is measured. Then the contacts are magnetized with a 500mT field using a magnet. A new residual magnetic field measurement is performed. Finally, a demagnetization phase is performed by applying an alternating magnetic field of a value greater than 500mT. A measurement is performed again. The three measures revealed a residual magnetism below lrIt, a critical value below which the tested contacts are considered non-magnetic.
- Example 9 Comparison of a Contact According to the Invention (Cu-Toron and Ni-Cr20-Col8-Ti-Al According to Example 7) and a Contact of the Prior Art (Cu and Cu-Be-Co Toron According to US Pat. comparative example 1)
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Conductive Materials (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Contacts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1453882A FR3020509B1 (fr) | 2014-04-29 | 2014-04-29 | Contact electrique miniature de haute stabilite thermique |
| PCT/FR2015/051125 WO2015166174A1 (fr) | 2014-04-29 | 2015-04-24 | Contact electrique miniature de haute stabilite thermique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3137640A1 true EP3137640A1 (fr) | 2017-03-08 |
| EP3137640B1 EP3137640B1 (fr) | 2019-08-07 |
Family
ID=51564759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15723270.3A Active EP3137640B1 (fr) | 2014-04-29 | 2015-04-24 | Contact electrique miniature de haute stabilite thermique |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10476176B2 (fr) |
| EP (1) | EP3137640B1 (fr) |
| CN (1) | CN105849979B (fr) |
| FR (1) | FR3020509B1 (fr) |
| WO (1) | WO2015166174A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190027861A1 (en) * | 2017-07-20 | 2019-01-24 | Materion Corporation | Electronic connectors with magnetic copper alloys |
| US10770839B2 (en) * | 2018-08-22 | 2020-09-08 | Amphenol Corporation | Assembly method for a printed circuit board electrical connector |
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| US3319217A (en) * | 1966-02-25 | 1967-05-09 | New Twist Connector Corp | Spirally wound pin connector |
| US3790372A (en) * | 1972-05-04 | 1974-02-05 | M Chaturvedi | Co-ni-cr base austentic alloys precipitation strengthened by intermetallic compounds and carbides |
| US4358180A (en) | 1981-03-09 | 1982-11-09 | Malco | Twist pin |
| US5112232A (en) * | 1987-05-21 | 1992-05-12 | Cray Computer Corporation | Twisted wire jumper electrical interconnector |
| US4857233A (en) * | 1988-05-26 | 1989-08-15 | Potters Industries, Inc. | Nickel particle plating system |
| US4943245A (en) * | 1989-07-31 | 1990-07-24 | Microdot Inc. | Coaxial electrical connector |
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| RU2497215C2 (ru) * | 2009-07-16 | 2013-10-27 | 3М Инновейтив Пропертиз Компани | Рассчитанный на работу под водой композитный кабель и способы его изготовления и использования |
| DE102010025287A1 (de) * | 2010-06-28 | 2012-01-26 | Stahlwerk Ergste Westig Gmbh | Chrom-Nickel-Stahl |
| JP5586354B2 (ja) * | 2010-07-15 | 2014-09-10 | 矢崎総業株式会社 | 金型及び圧着方法 |
| CN102570117B (zh) * | 2012-02-15 | 2014-08-06 | 贵州航天电器股份有限公司 | 一种绞线式弹性插针 |
| GB201216685D0 (en) * | 2012-09-18 | 2012-10-31 | Bpp Cables Ltd | Subterranean cable |
| US9539636B2 (en) * | 2013-03-15 | 2017-01-10 | Ati Properties Llc | Articles, systems, and methods for forging alloys |
| US9583884B1 (en) * | 2016-02-26 | 2017-02-28 | Northrop Grumman Systems Corporation | Electrostatic discharge (ESD) safe connector insert |
-
2014
- 2014-04-29 FR FR1453882A patent/FR3020509B1/fr not_active Expired - Fee Related
-
2015
- 2015-04-24 WO PCT/FR2015/051125 patent/WO2015166174A1/fr not_active Ceased
- 2015-04-24 EP EP15723270.3A patent/EP3137640B1/fr active Active
- 2015-04-24 CN CN201580001697.7A patent/CN105849979B/zh active Active
- 2015-04-24 US US15/307,590 patent/US10476176B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20170077617A1 (en) | 2017-03-16 |
| US10476176B2 (en) | 2019-11-12 |
| FR3020509B1 (fr) | 2016-05-13 |
| EP3137640B1 (fr) | 2019-08-07 |
| CN105849979B (zh) | 2019-06-11 |
| WO2015166174A1 (fr) | 2015-11-05 |
| FR3020509A1 (fr) | 2015-10-30 |
| CN105849979A (zh) | 2016-08-10 |
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