CN106783305A - A kind of high-tension switch cabinet static contact method for preparing powder metallurgy - Google Patents
A kind of high-tension switch cabinet static contact method for preparing powder metallurgy Download PDFInfo
- Publication number
- CN106783305A CN106783305A CN201611102302.5A CN201611102302A CN106783305A CN 106783305 A CN106783305 A CN 106783305A CN 201611102302 A CN201611102302 A CN 201611102302A CN 106783305 A CN106783305 A CN 106783305A
- Authority
- CN
- China
- Prior art keywords
- parts
- powder
- static contact
- switch cabinet
- raw material
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/048—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by powder-metallurgical processes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/025—Composite material having copper as the basic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
Abstract
The invention discloses a kind of high-tension switch cabinet static contact method for preparing powder metallurgy, following processing step is included：1）, burden process：It is made up of the raw material of following weight portion：40 50 parts of copper powder, 23 parts of glass putty, 1.4 1.8 parts of nickel powder, 2.5 3.5 parts of zinc stearate, 0.8 1.2 parts of plasticizer, 2.4 2.8 parts of magnesium powder, 0.5 0.8 parts of element of alloy enhancing, 46 parts of iron powder；2）, suppression process：To all dispensings are loaded in mould, pressing pressure is 400MPa~440MPa, and temperature is 250 280 DEG C during compacting, and pressed density reaches 2.2 3.1g/cm3；3）, sintering circuit.Static contact alloy formula of the present invention is more reasonable, and with the increase of V-groove contact surface, electric conductivity is obviously improved.
Description
Technical field
The present invention relates to high-tension switch cabinet part field, a kind of high-tension switch cabinet static contact powder metallurgy system is particularly belonged to
Preparation Method.
Background technology
High-tension switch cabinet refers to for playing break-make, control in power system generating, transmission of electricity, distribution, electric energy conversion and consumption
Or the effect such as protection, high-tension switch cabinet by making electric equipment products of the voltage class in 3.6kV ~ 550kV, high voltage isolator and ground connection
Switch, high voltage load switch, high pressure automatic reclosing and sectionaliser, high-voltage actuating mechanism, high-voltage explosion-proof power distribution equipment and height are pressed off
Close several major classes such as cabinet.Wherein static contact produces considerable influence for switch cubicle overall performance.
The content of the invention
Regarding to the issue above, it is an object of the invention to provide a kind of high-tension switch cabinet static contact powder metallurgy preparation side
Method, static contact alloy formula is more reasonable, and with the increase of V-groove contact surface, electric conductivity is obviously improved.
Technical scheme is as follows：
A kind of high-tension switch cabinet static contact method for preparing powder metallurgy, includes following processing step：
1）, burden process：It is made up of the raw material of following weight portion：Copper powder 40-50 parts, glass putty 2-3 parts, nickel powder 1.4-1.8 parts, it is hard
2.5-3.5 parts of resin acid zinc, plasticizer 0.8-1.2 parts, magnesium powder 2.4-2.8 parts, alloy enhancing 0.5-0.8 parts of element, iron powder 4-6
Part；
2）, suppression process：To all dispensings are loaded in mould, pressing pressure is 400MPa~440MPa, and temperature is during compacting
250-280 DEG C, pressed density reaches 2.2-3.1g/cm3；
3）, sintering circuit：The sinter molding in protective atmosphere sintering furnace, the stationary contact face for sintering into has V-shaped groove, protects gas
Atmosphere is volume ratio 2：3 nitrogen, the mixed atmosphere of helium, are warming up under the conditions of 1050-1200 DEG C with 15-20 DEG C/min of speed
Sintering 0.5-0.7 hour, then insulation 0.6-0.9 hours under the conditions of being cooled to 850-930 DEG C with 7-10 DEG C/min of speed；
4）, go out static contact end face external screw thread by lathe car, reach is 5-6cm, and static contact then is heated into 510-530
DEG C insulation 0.8-1.2 hour, and with quenching liquid cooling, the quenching liquid is made up of following mass percent raw material：14-17%
Na2SO4、8-9%Na2CO3、5-7%KNO3, excess water.
The burden process：It is made up of the raw material of following weight portion：45 parts of copper powder, 2.5 parts of glass putty, 1.6 parts of nickel powder, tristearin
3 parts of sour zinc, 1 part of plasticizer, 2.6 parts of magnesium powder, 0.65 part of element of alloy enhancing, 5 parts of iron powder.
Beneficial effects of the present invention：
Compared with prior art, it is an advantage of the invention that using special raw material proportioning, making the product performance index produced high,
Glossiness is good, good stability, is less prone to the phenomenons such as fracture, and long service life, static contact alloy formula is more reasonable, with V
Type groove contact surface increases, and electric conductivity is obviously improved.
Brief description of the drawings
Fig. 1 is that static contact structure of the invention illustrates intention.
Specific embodiment
With reference to specific embodiment, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate the present invention.
A kind of high-tension switch cabinet static contact method for preparing powder metallurgy, it is characterised in that：Include following processing step：
1）, burden process：It is made up of the raw material of following weight portion：45 parts of copper powder, 2.5 parts of glass putty, 1.6 parts of nickel powder, zinc stearate 3
Part, 0.65 part of element of 1 part of plasticizer, 2.6 parts of magnesium powder, alloy enhancing, 5 parts of iron powder；
2）, suppression process：To all dispensings are loaded in mould, pressing pressure is 420MPa, and temperature is 265 DEG C during compacting, compacting
Density reaches 2.6/cm3；
3）, sintering circuit：The sinter molding in protective atmosphere sintering furnace, the end face of static contact 1 for sintering into has V-shaped groove 2, protection
Atmosphere is volume ratio 2：3 nitrogen, the mixed atmosphere of helium, are warming up under the conditions of 1120 DEG C with 18 DEG C/min of speed and sinter 0.6
Hour, then 0.75 hour is incubated under the conditions of being cooled to 890 DEG C with 8.5 DEG C/min of speed；
4）, go out static contact end face external screw thread by lathe car, reach is 5.5cm, then by static contact be heated to 520 DEG C guarantor
Temperature 1 hour, and cooled down with quenching liquid, the quenching liquid is made up of following mass percent raw material：15.5%Na2SO4、8.5%
Na2CO3、6%KNO3, excess water.
According to the high-tension switch cabinet stationary contact head material that the present invention is produced, experimental data is as shown in the table：
Yield strength σ s (MPa)：>=650, elongation δ 5 (%)：>=11, contraction percentage of area ψ (%)：>=37, Impact energy Ak v (J)：
>=45, notched bar impact strength α kv (J/cm2)：≥62.
Claims (2)
1. a kind of high-tension switch cabinet static contact method for preparing powder metallurgy, it is characterised in that：Include following processing step：
1）, burden process：It is made up of the raw material of following weight portion：Copper powder 40-50 parts, glass putty 2-3 parts, nickel powder 1.4-1.8 parts, it is hard
2.5-3.5 parts of resin acid zinc, plasticizer 0.8-1.2 parts, magnesium powder 2.4-2.8 parts, alloy enhancing 0.5-0.8 parts of element, iron powder 4-6
Part；
2）, suppression process：To all dispensings are loaded in mould, pressing pressure is 400MPa~440MPa, and temperature is during compacting
250-280 DEG C, pressed density reaches 2.2-3.1g/cm3；
3）, sintering circuit：The sinter molding in protective atmosphere sintering furnace, the stationary contact face for sintering into has V-shaped groove, protects gas
Atmosphere is volume ratio 2：3 nitrogen, the mixed atmosphere of helium, are warming up under the conditions of 1050-1200 DEG C with 15-20 DEG C/min of speed
Sintering 0.5-0.7 hour, then insulation 0.6-0.9 hours under the conditions of being cooled to 850-930 DEG C with 7-10 DEG C/min of speed；
4）, go out static contact end face external screw thread by lathe car, reach is 5-6cm, and static contact then is heated into 510-530
DEG C insulation 0.8-1.2 hour, and with quenching liquid cooling, the quenching liquid is made up of following mass percent raw material：14-17%
Na2SO4、8-9%Na2CO3、5-7%KNO3, excess water.
2. longitudinal beam of automobile frame method for preparing powder metallurgy according to claim 1, it is characterised in that：The dispensing work
Sequence：It is made up of the raw material of following weight portion：45 parts of copper powder, 2.5 parts of glass putty, 1.6 parts of nickel powder, 3 parts of zinc stearate, 1 part of plasticizer,
2.6 parts of magnesium powder, 0.65 part of element of alloy enhancing, 5 parts of iron powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611102302.5A CN106783305A (en) | 2016-12-05 | 2016-12-05 | A kind of high-tension switch cabinet static contact method for preparing powder metallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611102302.5A CN106783305A (en) | 2016-12-05 | 2016-12-05 | A kind of high-tension switch cabinet static contact method for preparing powder metallurgy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106783305A true CN106783305A (en) | 2017-05-31 |
Family
ID=58884580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611102302.5A Pending CN106783305A (en) | 2016-12-05 | 2016-12-05 | A kind of high-tension switch cabinet static contact method for preparing powder metallurgy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106783305A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595569A (en) * | 2004-06-21 | 2005-03-16 | 乐清市帕特尼触头有限公司 | Copper/rare-earth oxide/carbon contact and method for producing same |
| CN101667498A (en) * | 2009-10-13 | 2010-03-10 | 昆明理工大学 | Preparation method of W-Cu electrical contact |
| CN101885060A (en) * | 2010-06-22 | 2010-11-17 | 上海中希合金有限公司 | High-performance copper-diamond electrical contact material and preparation process thereof |
| CN102994912A (en) * | 2012-11-22 | 2013-03-27 | 宁波得利时泵业有限公司 | Stator of homogeneous mixing pump and preparation method thereof |
| CN105132736A (en) * | 2015-09-01 | 2015-12-09 | 河南科技大学 | Dispersed copper composite material and preparation method thereof |
-
2016
- 2016-12-05 CN CN201611102302.5A patent/CN106783305A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595569A (en) * | 2004-06-21 | 2005-03-16 | 乐清市帕特尼触头有限公司 | Copper/rare-earth oxide/carbon contact and method for producing same |
| CN101667498A (en) * | 2009-10-13 | 2010-03-10 | 昆明理工大学 | Preparation method of W-Cu electrical contact |
| CN101885060A (en) * | 2010-06-22 | 2010-11-17 | 上海中希合金有限公司 | High-performance copper-diamond electrical contact material and preparation process thereof |
| CN102994912A (en) * | 2012-11-22 | 2013-03-27 | 宁波得利时泵业有限公司 | Stator of homogeneous mixing pump and preparation method thereof |
| CN105132736A (en) * | 2015-09-01 | 2015-12-09 | 河南科技大学 | Dispersed copper composite material and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |