JOHN WINTER

METALLURGICAL PRODUCTS FOR FERROUS AND NON FERROUS ALLOYS
FLUXES, DEGASSING, GRAIN REFINING, MODIFYING AND MORE

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Fluxes, Grain Refiners, Degassing Tablets for Aluminium Foundries and Slag Coagulants

John Winter has a range of products in stock for both Ferrous and Non Ferrous Foundries for controlling and preventing dross inclusions and fluid slags from entering castings.

For processing aluminium, powder fluxes, grain refiners, modifiers and degassing tablets are a critically important part of the production of aluminium castings and graphite lances are also available for rotary degassing machines. For Copper alloys and there are a number of fluxes available and for Iron and Steel foundries controlling and eliminating fluid slag is always a challenge. Filters play a big part in preventing it from entering castings but Slagcure K and Slag Coagulant is equally effective to produce quality castings and prolong ladle life by reducing slag build up. 

Aluminium Degassing, Grain Refining and Modifying 
A range of products for the treatment of Aluminium Alloys

 
Ecogas 16 Degassing Aluminium
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Gas Control Tablet

Ecogas 16

Degas

Plunge to the bottom of the melt with a steel or graphite bell plunger to effectively remove hydrogen gas. Once bubbling stops the metal can be tested on an MK Test Unit or simple glass vacuum chamber. Available in 200gram and 500gram tablets.

 
Regas Gas Additive Die Casting Tablet John Winter
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Gas Control Tablets

Regas AL Tablets

Gas Additive

Regas AL is a very effective gas additive tablet for very thin section die castings. Regas aids metal flow on very hard-to-make die castings to prevent subsurface defects. 

Its a high quality, proven product and been approved in foundries governed by automotive quality standards. 

 
Grain Refinement Aluminium Alloys John Winter
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TiBor Refiner

Silifin 1655

Grain Refiner

Grain refiner (also referred to as innoculant) is an essential component of the treatment of aluminium. It ensures the as-cast structure is not coarse which can produce low tensile strengths. Comes in a 500 and 200gram tablet. 

 
Modified Silicon Aluminium Alloy Treatment Silifin 1655 John Winter
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Sodium Modifier

Exomod AL14

Modify High Silicon Alloys

Exomod AL14 is an effective sodium modifier for Eutectic aluminium alloys like LM6 and grades that have a silicon content in the region of 10 to 12%. Sometimes used to modify the silicon structure in hypo eutectic alloys like to LM25 to improve machineability. 

 

Fluxes for Aluminium Alloys 

A range of highly effective fluxes for cleaning aluminium alloys

 
Aluminium Drossing Flux AL135 John Winter
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Flux

Exopure AL135

General use Flux for

LM0, LM4, LM25, LM6 

Exopure AL135 is a general purpose, drossing flux for the most common grades of aluminium, such as LM25, LM6. This flux works best at a metal temperature of 750C. It effectively removes oxides and dross from the metal to leave a clean quality alloy.

 
Drossing Flux Coverflux 0021 John Winter
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Flux

Coverflux 0021

General use Flux for

Lower Casting Temps

Related Products

Insulation Blanket

Coverflux 0021 is a high quality flux that works well at lower temperatures (710C). A premium grade flux used extensively across UK and Globally.

Available in 25kg and 1 tonne bulk bag.

 
Cover 302 John Winter Drossing Flux
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Flux

Cover 302

Specialist Flux for

Higher Mg Alloys

Related Products

Refractory

Coverflux 302 is a specialist, low sodium grade for flux for alloys with a high Mg content. 

 
Ecopure 164 Injection Flux John Winter
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Flux

Ecopure 164

Specialist grade for 

Flux Injection

Related Products

Rotary Degas Lance

Ecopure 164 is a flux with a granular size well suited to flux injection lances and disperses well within the aluminium when under of nitrogen injection to produce a clean oxide free melt. 

 
Ecopure AL136 Drossing Flux John Winter
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High & Low Pressure

Ecopure AL136

Low Temperature

Die Casting Flux

Ecopure AL136 is a high performance drossing flux that has environmental benefits. 

Flux for Zinc Alloys 

Clean metal surface and prevent prevent inclusions

 
Zinc Flux Zn21 John Winter
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Zn

Zinc Alloys

Ecopure Zn 21

Specialist Flux for

Zn Alloy

Related Products

Crucibles
Refractories

Ecopure Zn 21 is a flux for cleaning and improving the fluidity of molten zinc for casting and in hot dipping tanks. 

Flux for Melting and Refining Lead 

Clean metal surface and reduce metal losses

 
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Zn
Ecopure Mg25 Flux John Winter
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Pb

Lead Flux

Ecopure Pb

Specialist Flux for

Cleaning Lead

Ecopure Pb is used to separate dross from liquid lead to prevent metal losses. The lead dross thats removed from the metal surface will be a mixture of dry ash-like oxides containing no liquid metal. 

 

Fluxes for Magnesium Alloys 

Clean metal surface and prevent gas defects

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Zn
Ladle with molten metal is poured into a
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Mg

Magnesium Alloy Flux

Ecopure Mg 25

Specialist Flux for

Cleaning Mag Alloy

Ecopure Mg 25 is a high performance flux used to make barium salts sink to the bottom of the melt and segregate them from the magnesium alloy. 

 

Oxidising Fluxes for Copper Alloys 
Clean metal surface and prevent gas defects

 
Cupracover 520 Aluminium Bronze Flux John Winter
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Cu

Cu Alloy Flux

Cupracover 520

Protective Flux for 

Aluminium Bronze

Cupracover 520 is a coverflux used on AB1, AB2 and AB3 aluminum bronze. Acts as a shield on the surface of the metal to prevent moisture ingress into the melt.  Degassing aluminium bronze can be done with Codegas 137 or nitrogen gas bubbled through a compatible graphite lance.  

 
Cupracover 505 Bronze Flux John Winter
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Cu

Cu Alloy Flux

Cupracover 505

Oxidising Flux

for Bronze

Cupracover 505 is a protective oxidising flux used for Bronzes like PB1. 

 
Ecopure 526 gunmetal oxidising flux
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Cu

Cu Alloy Flux

Ecopure 526

Oxidising Flux

for Gunmetal

Ecopure 526 is an oxidising flux for the melting of Gunmetal. 526 is suited to foundries producing gunmetal from clean ingot/ scrap.

If using an oxidising flux the metal must then be dexoxised using CT Tubes. 

Deoxidising Treatments for Copper Alloys 
Clean metal surface and prevent gas defects

 
Codegas 137 Deoxidising Aluminium Bronze
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Cu

Cu Alloy Degas

Codegas 137

Deoxidizing Capsule for 

Aluminium Bronze

Codegas is a capsule that effectively deoxidises aluminium bronze. 1x capsule will deoxidise 50kg's of metal. Pre warm the capsule then plunge to the bottom of the melt with a graphite plunger. Suitable for crucible melting in smaller quantities. 

 
CT Tubes Bronze Deoxidising John Winter
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Cu
NOT suitable for aluminium bronzes or Nickel Bronzes

Cu Alloy Degas

CT Tubes

Deoxidizing Bronze Alloys

CT Tubes deoxidise Gunmetal, Pure Copper & phosphour bronzes. Must be plunged to the bottom of the melt using a graphite plunger and used with compatible oxidising flux.  CT3 Tubes will treat 25kgs. CT4 Tubes will treat 50kg's.

 
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Cu

Melting Copper

Charcoal

Used on surface of high

purity copper alloys

Related Products

Refractories

Charcoal is often used as a protective barrier to prevent the oxidation of the metal surface. 

Iron & Steel Metal Cleaning 
Surface treatment coagulants and fluxes

Fe
 
Slag Coagulant John Winter
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Slag Removal 

Slag Coagulant

Binds liquid slag on

Iron & Steel

Related Products

Ladle Reline

A granular coagulant that binds liquid slag together so it can be easily removed from the metal surface. 2 or 3 applications will produce a clean metal surface prior to casting.

Available in 25kg bags of Fine, Medium and Coarse grades. 

 
Slagcure K Slag Removal John Winter
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Slag Removal 

Slagcure K

Prevents liquid slag build-up

on Furnaces and Ladles

A blend of oxides that help to prevent liquid slag from solidifying and building up on furnace and ladle linings therefore, extending the service life of refractories. Especially useful for ductile iron treatment vessels and for steels prone to excessive slag volumes.