Brazing Alloys and Fluxes - Revision history

Doduco Admin: /* Brazing Alloys */

2023-01-10T07:05:59Z

‎Brazing Alloys

Doduco Admin: /* Brazing Alloys */

2023-01-10T07:05:34Z

‎Brazing Alloys

Doduco Admin: /* Brazing Alloys */

2022-12-15T12:38:58Z

‎Brazing Alloys

Doduco Admin: /* Brazing Alloys */

2022-12-15T12:38:34Z

‎Brazing Alloys

Doduco Admin: /* Brazing Alloys */

2022-12-15T12:36:37Z

‎Brazing Alloys

Doduco Admin: /* Brazing Alloys */

2022-12-15T12:35:59Z

‎Brazing Alloys

Doduco Admin: /* Brazing Alloys */

2022-12-14T06:52:04Z

‎Brazing Alloys

Doduco Admin at 07:46, 5 December 2022

2022-12-05T07:46:54Z

Doduco Admin at 11:42, 22 November 2022

2022-11-22T11:42:20Z

Teitscheid at 19:19, 17 September 2014

2014-09-17T19:19:35Z

@@ Line 76: / Line 76: @@
 |Cu, Cu-Legierungen, Ag-materials
 </figtable>
 == Fluxes ==

@@ Line 17: / Line 17: @@
 |-
 !Designation<br/>DIN EN 1044
 !Designation US<br/>(equivalent or closest similar brazing alloy)
 !Designation<br/>DIN EN ISO 3677
@@ Line 26: / Line 27: @@
 !Density<br/>[g/m<sup>3</sup>]
 !Application
 |-
 |AG103
 |BAg-7
 |B-Ag55ZnCuSn<br/>630/660
@@ Line 72: / Line 41: @@
 |-
 |Ag502
 |BAg-22
 |B-Ag49ZnCuMnNi<br/>680/705
@@ Line 83: / Line 53: @@
 |-
 |Ag401
 |BAg-8
-|B-Ag72<br/>780
+|B-Ag72Cu-780
 |Ag71 - 73<br/>Cu Rest
 |780
@@ Line 94: / Line 65: @@
 |-
 |CP 102
 |BCuP-5
 |B-Cu80AgP<br/>645/800

← Older revision		Revision as of 12:38, 15 December 2022
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	For electrical contacts, usually low-melting alloys with a minimum of 20 wt-% silver and additions of cadmium, zinc or tin are used to lower the melting point (<xr id="tab:Commonly_Used_Brazing_Alloys_for_Electrical_Contacts"/><!--(Table 4.1)-->). Because of the toxicity of cadmium, most cadmium containing brazing alloys have been replaced by zinc and tin containing brazing alloys. Alloys containing nickel and manganese are also used for higher corrosion resistance requirements or for easier wetting of stainless steel.. Using any of these brazing alloys in an air environment is only possible with the addition of oxide reducing fluxes.		For electrical contacts, usually low-melting alloys with a minimum of 20 wt-% silver and additions of cadmium, zinc or tin are used to lower the melting point (<xr id="tab:Commonly_Used_Brazing_Alloys_for_Electrical_Contacts"/><!--(Table 4.1)-->). Because of the toxicity of cadmium, most cadmium containing brazing alloys have been replaced by zinc and tin containing brazing alloys. Alloys containing nickel and manganese are also used for higher corrosion resistance requirements or for easier wetting of stainless steel.. Using any of these brazing alloys in an air environment is only possible with the addition of oxide reducing fluxes.
−
−	~~<figtable id="tab:Commonly_Used_Brazing_Alloys_for_Electrical_Contacts">~~
−	~~[[File:Commonly Used Brazing Alloys for Electrical Contacts.jpg\|right\|thumb\|Table 2: Commonly Used Brazing Alloys for Electrical Contacts]]~~
−	~~</figtable>~~

	For high temperature brazing in vacuum or protective atmosphere, vacuum melted silver-copper eutectic brazing alloys are used. These also allow subsequent forming operations due to their higher ductility.		For high temperature brazing in vacuum or protective atmosphere, vacuum melted silver-copper eutectic brazing alloys are used. These also allow subsequent forming operations due to their higher ductility.

@@ Line 16: / Line 16: @@
 <figtable id="tab:Commonly_Used_Brazing_Alloys_for_Electrical_Contacts">
-<caption>'''<!--Table 4.2:-->Commonly Used Brazing Alloys for Electrical_Contacts'''</caption>
+<caption>'''<!--Table 4.2:-->Commonly Used Brazing Alloys for Electrical Contacts'''</caption>
 {| class="twocolortable" style="text-align: left; font-size: 12px"
@@ Line 40: / Line 40: @@
 |14,0
 |9,3
-|Cu, Cu-Legierungen, Ag<br/>Fe, Ni
+|Cu, Cu-Alloys, Ag-materials<br/>Fe, Ni
 |-
 |AG306[i]
@@ Line 51: / Line 51: @@
 |13,0
 |9,2
-|Cu, Cu-Legierungen, Ag<br/>Fe, Ni
+|Cu, Cu-Alloys, Ag-materials<br/>Fe, Ni
 |-
 |AG309[i]
@@ Line 62: / Line 62: @@
 |12,0
 |8,8
-|Cu, Cu-Legierungen, Ag<br/>Fe, Ni
+|Cu, Cu-Alloys, Ag-materials<br/>Fe, Ni
 |-
 |AG103
@@ Line 73: / Line 73: @@
 |8,4
 |9,6
-|Cu, Cu-Legierungen, Ag<br/>Fe, Ni
+|Cu, Cu-Alloys, Ag-materials<br/>Fe, Ni
 |-
 |Ag502
@@ Line 84: / Line 84: @@
 |4,0
 |8,9
-|W, Mo, Hartmetallstahl<br/>Fe, Ni
+|W, Mo, carbide steel<br/>Fe, Ni
 |-
 |Ag401
@@ Line 95: / Line 95: @@
 |46,1
 |10,0
-|Cu, Cu-Legierungen, Ag<br/>Vakuumlöten
+|Cu, Cu-Alloys, Ag-materials<br/>vacuum brazing
 |-
 |CP 102
@@ Line 106: / Line 106: @@
 |7,0
 |8,4
-|Cu, Cu-Legierungen, Ag
+|Cu, Cu-Legierungen, Ag-materials
 </figtable>
-[i] Die Herstellung oder Verwendung von cadmiumhaltigen Hartloten ist in der Europäischen Union seit Dezember 2011 verboten
+[i] The manurfacture or use of Cadmium containing brazing alloys is prohibited in the European Union since December 2011
 == Fluxes ==

@@ Line 16: / Line 16: @@
 <figtable id="tab:Commonly_Used_Brazing_Alloys_for_Electrical_Contacts">
-<caption>'''<!--Table 4.2:-->Commonly_Used_Brazing_Alloys_for_Electrical_Contacts'''</caption>
+<caption>'''<!--Table 4.2:-->Commonly Used Brazing Alloys for Electrical_Contacts'''</caption>
 {| class="twocolortable" style="text-align: left; font-size: 12px"

@@ Line 14: / Line 14: @@
 For the brazing of contacts with a silver bottom layer to copper backings, phosphorous containing brazing alloys which eliminate the need for a flux application, are widely used.
 The brazing alloy is typically introduced into the joint area in the form of wire segments, foil, shims or as powder or paste. For larger production volumes it is economically advantageous to pre-coat contact tips with a thin layer (&le; 100 µm) of brazing alloy.
 == Fluxes ==

@@ Line 8: / Line 8: @@
 <figtable id="tab:Commonly_Used_Brazing_Alloys_for_Electrical_Contacts">
-[[File:Commonly Used Brazing Alloys for Electrical Contacts.jpg|right|thumb|Commonly Used Brazing Alloys for Electrical Contacts]]
+[[File:Commonly Used Brazing Alloys for Electrical Contacts.jpg|right|thumb|Table 2: Commonly Used Brazing Alloys for Electrical Contacts]]
 </figtable>

@@ Line 3: / Line 3: @@
 ==Brazing Alloys ==
-For the joining of contact materials with carrier substrates brazing alloys with working temperatures > 600 °C are used exclusively. The working temperature is defined as the lowest surface temperature by which the brazing material wets the materials to be joined. This temperature is within the melting range and between the solidus (temperature at which melting starts) and liquidus (temperature at complete liquid state) point of the brazing alloy. Silver-based brazing alloys have good electrical conductivity and a sufficient mechanical strength, which allows a bonding process without significant changes in the microstructure of the material to be joined.
+For the joining of contact materials with carrier substrates, brazing alloys with working temperatures > 600 °C are used exclusively. The working temperature is defined as the lowest surface temperature, by which the brazing material wets the materials to be joined. This temperature is within the melting range and between the solidus (temperature at which melting starts) and liquidus (temperature at complete liquid state) point of the brazing alloy. Silver-based brazing alloys have good electrical conductivity and a sufficient mechanical strength, which allows a bonding process without significant changes in the microstructure of the material to be joined.
-For electrical contacts, usually low-melting alloys with a minimum of 20 wt-% silver and additions of cadmium, zinc or tin are used to lower the melting point <xr id="tab:Commonly_Used_Brazing_Alloys_for_Electrical_Contacts"/><!--(Table 4.1)-->. Because of the toxicity of cadmium, most cadmium containing brazing alloys have been replaced by zinc and tin containing brazing alloys. For higher requirements on corrosion resistance or for easier wetting of stainless steel, nickel and manganese containing alloys are also used. Using any of these brazing alloys in an air environment is only possible with the addition of oxide reducing fluxes.
+For electrical contacts, usually low-melting alloys with a minimum of 20 wt-% silver and additions of cadmium, zinc or tin are used to lower the melting point (<xr id="tab:Commonly_Used_Brazing_Alloys_for_Electrical_Contacts"/><!--(Table 4.1)-->). Because of the toxicity of cadmium, most cadmium containing brazing alloys have been replaced by zinc and tin containing brazing alloys. Alloys containing nickel and manganese are also used for higher corrosion resistance requirements or for easier wetting of stainless steel.. Using any of these brazing alloys in an air environment is only possible with the addition of oxide reducing fluxes.
 <figtable id="tab:Commonly_Used_Brazing_Alloys_for_Electrical_Contacts">
@@ Line 16: / Line 16: @@
 == Fluxes ==
-Brazing fluxes consist of non-metallic materials, mostly salt mixtures of boron and halogen compounds <xr id="tab:Fluxes for the Brazing of Heavy Metals"/><!--(Table 4.2)-->. Their purpose is to remove oxides from the brazing surfaces and prevent their new build-up in order to allow a thorough wetting of these surfaces by the liquefied brazing alloy. Fluxes have to be activated already at a temperature below the working range of the brazing alloy. They are selected mainly according to the working temperature of the brazing alloy and the base material to be joined.
+Brazing fluxes consist of non-metallic materials, mostly salt mixtures of boron and halogen compounds (<xr id="tab:Fluxes for the Brazing of Heavy Metals"/><!--(Table 4.2)-->). Their purpose is to remove oxides from the brazing surfaces and prevent their new build-up, in order to allow a thorough wetting of these surfaces by the liquefied brazing alloy. Fluxes have to be activated already at a temperature below the working range of the brazing alloy. They are selected mainly according to the working temperature of the brazing alloy and the base material to be joined.
 Since the residues of fluxes are hygroscopic and can cause corrosion, they have to be removed completely after the brazing process in very hot or boiling water. Depending on the type and process used, fluxes are being applied in liquid form or as powders or pastes.

← Older revision		Revision as of 19:19, 17 September 2014
Line 49:		Line 49:
	Müller, W.: Metallische Lotwerkstoffe. Dt. Verlag für Schweißtechnik,		Müller, W.: Metallische Lotwerkstoffe. Dt. Verlag für Schweißtechnik,
	Düsseldorf 1990		Düsseldorf 1990
		+
		+	[[de:Lote_und_Flussmittel]]