Forging Lubricants: Graphite, Graphite-Free, Dry And The Coil Sealant
A forging die lubricant has to wet a hot die, film evenly, release the forging and survive the next blow, shift after shift, without smoking out the shop. Pyroflux India makes the Forgecoat range in Delhi-NCR for exactly that: Forgecoat 100G, a smokeless, ammonia-free water-based graphite lubricant for a wide range of forged parts and die temperatures up to 1000 °C; Forgecoat 100S, a graphite-free water-based lubricant for warm and hot forging of ferrous metals where a black film is not acceptable; and Forgecoat D, a dry lubricant for cold forging applied with a dry spray gun or blower. SupraForge, an induction-coil sealant good to 1250 °C, protects the coils that heat the stock. Both liquid grades dilute 1:8 to 1:12 with water and spray onto dies at or above the film-forming temperature given on the data sheet.
The Forgecoat Grades
| Grade | Type | Die Temperature | Dilution | Notes |
|---|---|---|---|---|
| Forgecoat 100G | Water-based graphite | Spray onto dies at 93 °C minimum, up to 1000 °C | 1:8 to 1:12 | Smokeless, ammonia-free; wets hot dies, coats uniformly, excellent release, extends die life; wide range of forged products |
| Forgecoat 100S | Water-based, graphite-free | Spray onto dies at 125 °C minimum, up to 700 °C | 1:8 to 1:12 | Warm and hot forging of ferrous metals; clean, light-coloured film |
| Forgecoat D | Dry lubricant | Cold forging | None; dry spray gun or blower | Prevents sticking, excellent release, extends die life |
| SupraForge | Induction coil sealant | Up to 1250 °C | Applied directly to the coil | Seals and protects coils; extends coil life, prevents corrosion and build-up |
Choosing Between 100G And 100S
| Forgecoat 100G (Graphite) | Forgecoat 100S (Graphite-Free) | |
|---|---|---|
| Film | Black graphite film | Light-coloured film |
| Die temperature | Up to 1000 °C | Up to 700 °C |
| Release | Excellent on deep, complex cavities | Excellent on warm and moderate hot forging |
| Housekeeping | Graphite dust and black residue to manage | Cleaner shop, no black marks on forgings |
| Choose it for | Steel hot forging, deep cavities, heavy parts | Parts that must stay clean, warm forging, lines where graphite contamination is a problem |
For aluminium and brass hot forging, and for any forging where a carbon film would contaminate the part, a boron nitride suspension or BN stick gives a white, non-wetting film to about 900 °C; see the BN vs graphite guide.
Film Formation Is Everything
- Dilute 1:8 to 1:12 with water depending on cavity depth and die temperature; deeper cavities and hotter dies take the richer end.
- Spray onto dies that are at or above the film-forming temperature (93 °C for 100G, 125 °C for 100S). Below it the lubricant runs off; well above it, it films instantly.
- Keep the spray short and even; the water flashes off and leaves the film. Flooding a die cools it and wastes lubricant.
- Watch the forging surface: sticking or galling means a richer mix or a shorter spray interval; build-up in the cavity means too rich.
- Keep the tank agitated to hold the graphite in suspension, and clean the lines when the press stands.
Forgecoat 200G And The Induction-Coil Putty
| Forgecoat 200G | Oil-based forging lubricant with 3 µm graphite, for shops that run an oil carrier rather than water |
|---|---|
| Forgecoat 100G | Water-based forging lubricant, 3 µm graphite |
| Forgecoat 100S | Water-based graphite-free (synthetic) forging lubricant |
| Supracoat | High-temperature putty sealant for induction heating coils |
All three Forgecoat lubricants are made for ferrous and non-ferrous forging. Ask for the grade that matches your carrier and die temperature.
Common Questions
What is the difference between Forgecoat 100G and 100S?
100G is a water-based graphite lubricant for dies up to 1000 °C and deep, complex cavities; 100S is graphite-free for warm and hot forging of ferrous metals up to 700 °C where a clean, light-coloured film is wanted. Both dilute 1:8 to 1:12.
Is Forgecoat 100G smokeless?
Yes. It is formulated to be smokeless and ammonia-free, which is one of the reasons shops switch to it from oil-based graphite.
Can I use boron nitride for forging?
Yes, for aluminium, brass and any forging where a carbon film is a problem, and for dies up to about 900 °C. For steel hot forging at the top of the temperature range, graphite remains the economical choice.
What is SupraForge for?
It is a sealant applied directly to induction-furnace coils in forging lines. It withstands up to 1250 °C, seals the coil against corrosion and build-up of scale and impurities, and extends coil life.
Do you supply a technical data sheet and SDS?
Yes, per grade, by email within one working day of a request.
Tell Us The Process; We Will Recommend The Grade
Substrate, process temperature, atmosphere and how you prefer to apply it. That is everything we need to point you at the right product, send a sample, or quote.
- Phone
- +91 98181 87838
- sales@pyroflux.in
- Office
- G-5, Sector 63, Noida 201301, Uttar Pradesh, India
- Factory
- G-15, Sector 63, Noida 201301, Uttar Pradesh, India
- Hours
- Monday to Saturday, 9 am to 6 pm IST