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2020 Good Quality Powder Metallurgy Contact – POWDER METAL CONTACTS – ZHJ

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China 2020 Good Quality Powder Metallurgy Contact - POWDER METAL CONTACTS - ZHJ Manufacturer and Supplier | ZHJ Detail:

Application:
Contactors, circuit breakers, thermostats, intelligent switches, etc
The Material:
AgC,AgW,AgWC,AgWCC,AgNiC,CuW

Microstructure

1

General Description

AgC contact materials show a very high resistance against contact welding and low contact resistance. Resistance against welding increases with increasing graphite content. AgC materials have self-lubricating behavior when used as sliding contacts.

Application Scope

Mainly used in protective switches such as MCBs, MCCBs, residual current protective switches, or motor protective switches. Application is normally in asymmetric match with AgNi,AgW, AgWC or Cu.

Material Properties

AgC AgC AgC AgC AgC AgC
C Content(wt.%) 3±0.5 4±0.5 5±0.5 3±0.5 3.8±0.5 4±0.5
Density (g/cnre) ≥9.10 ≥8.9 ≥8.60 ≥9.10 ≥9.00 ≥8.9
Elec.Resistivity (.10•cm) ≤2.10 ≤2.20 ≤2.30 ≤2.10 ≤2.20 ≤2.20
Hardness HV ≥42 ≥42 ≥42 ≥42 ≥42 ≥42
Manufacturing process

Sintering-Extruding

Product Types

1600736807(1)

Microstructure

1593741768(1)

General Description

Contacts made of AgW show a high anti-welding resistance and a high resistance to arc erosion due to high melting point and high hardness of W, they also have a good electrical and thermal conductivity.

Application Scope

AgW materials are mainly used in low voltage MCCB and ACB and protective switches.

Material Properties

AgW AgW AgW AgW AgW AgW
Ag Content(wt.%) 50±2 45±2 40±2 35±2 30±2 25±2
Density (g/cm3) ≥13.15 ≥13.55 ≥14.00 ≥14.50 ≥14.90 ≥15.40
EIec.Resistivity (1.10•cm) ≤3.00 ≤3.20 ≤3.40 ≤3.60 ≤3.80 ≤4.20
Hardness HV ≥100 ≥110 ≥120 ≥130 ≥145 ≥160
Manufacturing process Infiltration

 

Product Types

1600747079(1)

Microstructure

1593742074(1)

General Description

The AgWC contact materials containing the refractory component WC have high hardness and resistance to mechanical wear, a low tendency towards contact welding, and a relatively stable contact resistance in service. AgWC contacts are produced by powder metallurgy infiltration.

Application Scope

Mainly used in heavy-duty switching devices, such as circuit breakers. residual current circuit breakers. In many cases they are used in asymmetric match with AgC

Material Properties

AgWC AgWC AgWC AgWC
Ag Content(wt.%) 65±2 60±2 50±2 35±2
Density (g/cm3) ≥11.50 ≥11.80 ≥12.20 ≥13.00
Elec.Resistivity (1.10•cm) ≤3.30 .A.50 4.50 5.20
Hardness HV ≥100 ≥125 ≥135 ≥155
Manufacturing process Infiltration

 

Product Types

1600761493(1)

Microstructure

1593742282(1)

General Description

Due to high Ag content , AgWCC contacts have low contact resistance. They have very high anti-welding properties due to containing tungsten carbide and graphite with high melting point. AgWCC contacts are manufactured by sintering.

Application Scope

Mainly used in heavy-duty switching devices, such as circuit breakers. residual current circuit breakers. In many cases they are used in asymmetric match with AgNi, AgW or AgWC.

Material Properties

AgWCC AgWCC AgWCC AgWCC
Ag Content(wt.%) 85±1 75±1 79±1 74.5±1
Density (g/cm3) ≥9.40 ≥10.25 ≥8.80 ≥10.50
Elec.Resistivity (u0•cnn) ≤3.40 ≤3.40 ≤3.80 ≤3.45
Hardness HV ≥50 ≥80 ≥60 ≥75
Manufacturing process Mixing-Compacting-Sintering

Product Types

1600761891(1)

Microstructure

1593741188(1)

General Description

AgNiC contacts combine the advantages ofAgNi and AgC contacts. They have good resistance to electrical erosion and anti-welding properties.

Application Scope

AgNiC contacts are mainly used in MCCB, ACB.

Material Properties

AgNiC AgNiC 3AgNiC
Ag Content(wt.%) 67±1 73±1 94±1
Density (g/cm3) ≥8.70 ≥9.10 ≥8.50
Elec.Resistivity (.10•cm) ≤4.50 ≤3.50 ≤3.50
Hardness HV ≥50 ≥60 ≥30
Manufacturing process Mixing-Compacting-Sintering

Product Types

1600745478(1)

Microstructure

1593742492(1)

General Description

CuW contact materials have excellent resistsnce against arc erosion and anti-welding properties up to very high curret. CuW contacts are produced in a great variety of shapes by means of powder metallurgy (pressing / sintering or infiltration). The tungsten content is 50%-80%.

Application Scope

CuW contacts are mainly used in medium and high voltage switchgears. Typical applications are in high voltage circuit breakers, load switches, transformer switches tap changers and low voltage arcing contacts.
In addition, CuW materials are widely used as electrodes, primarily for welding.

Material Properties

CuW CuW CuW
Cu Content (wt.%) 50±2 40±2 30±2
Density (g/cm3) ≥11.85 ≥12.75 ≥13.80
EIec.Resistivity (p0 cm) ≤3.20 ≤3.70 ≤4.10
Hardness HV ≥115 ≥140 ≥175
Manufacturing process Infiltration

 

Product Types

1600762141(1)


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China 2020 Good Quality Powder Metallurgy Contact - POWDER METAL CONTACTS - ZHJ Manufacturer and Supplier | ZHJ detail pictures


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Our eternal pursuits are the attitude of "regard the market, regard the custom, regard the science" and the theory of "quality the basic, belief the very first and management the advanced" for China 2020 Good Quality Powder Metallurgy Contact - POWDER METAL CONTACTS - ZHJ Manufacturer and Supplier | ZHJ , The product will supply to all over the world, such as: Lebanon , luzern , Germany , Now, we professionally supplies customers with our main merchandise And our business is not only the "buy" and "sell", but also focus on more. We target to be your loyal supplier and long-term cooperator in China. Now, We hope to be the friends with you.
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This supplier stick to the principle of "Quality first, Honesty as base", it is absolutely to be trust.
5 Stars By Tina from Provence - 2017.10.27 12:12
We have been cooperated with this company for many years, the company always ensure timely delivery ,good quality and correct number, we are good partners.
5 Stars By Hedy from Macedonia - 2018.02.08 16:45

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