Weldcote Black Paste Flux Is Formulated For The Majority Of Brazing Operations. It Is Recommended For Use With Copper, Copper Based Alloys, Brass, Nickel, Carbon Steel, Stainless Steel And Precious Metals And Heat Resistant Alloys. Residues Are Water Soluble. Weldcote Black Paste Flux Is A Creamy, Black Silver Brazing Paste Flux That Is Active And Protective To 980 Degrees Celsius/1800 Degrees Fahrenheit. Weldcote Black Paste Flux Is Available In Dispensable Form Suitable For Spraying Or Other Automatic Application Methods. The Flux Will Not Harden Or Crystallize, Retaining Its Creamy Texture Up To Two Years. Weldcote Black Paste Flux May Be Used In Concentrations From Or Diluted With Water To A Thinner Consistency. Heating The Flux To 60-82 Degrees Celsius/140-180 Degrees Fahrenheit Makes It Less Viscous And More Reactive. Heat The Flux Slowly To Reduce Spattering Or Excessive Bubbling. The Raw Flux And Residues Are Soluble In Hot Water. Chipping Or Grinding Is Not Necessary. Weldcote Black Paste Flux Is A General Purpose Brazing Flux Used In A Wide Variety Of Joining Applications For Many Different Finished Products Including: Appliances, Automotive, Carbide Tools, Dental Tools, Orthodontia, Farm Machinery, Heat Exchanges, Heat Equipment, Maintenance, Mining Tools, Musical Instruments, Plumbing Fixtures. Refrigeration And Air Conditioning, Ship Repair, Steel Furniture And Welding Equipment. Procedure: Remove Any Oil, Grease Or Other Contaminants From The Surface To Be Brazed. Apply Flux To Joint By Dipping, Swabbing Or Brushing Area Being Brazed. The Flux May Be Used As Supplied Or Diluted. Apply Heat By Torch, Induction Or Other Means To The Area Being Brazed After The Flux Has Been Applied To Activate The Flux. Feed The Braze Alloy Into The Joint, Unless A Brazing Perform Is Already In Place. Clean Flux Residues From Brazed Joint Using Hot Water For Best Results. If Unavailable, Room Temperature Water May Also Be Used.
