Product Description

It has great advantages over high temprature steel and iron black coating: enery saving, no need to be heated for the workpiece, no special requirements for steel and iron type friendly to the environment no nitrite ingredients. Characterstic: Transparent light green liquid, low dosage: 40-100Kg steel or iron only costs 1 Kg JSJ-808 Process Flow: Degreasing-water washing-acid washing-blacken-water washing-saponification-anti rust oil soaking Process Condition: 1.Blacken process JSJ-808: 1 portion (as per weight) Water : 4 portion(as per weiight) PH: 2.5~3 Time: 3-8 minutes. 2. Saponification Soap liquid 3-5%, under temprature 90-100¿, lasting time: 1-3 minutes, Notes: This product can only be hold in non-metalic holder, as plastic barrel. It is natural if there appears some white precipitant after JSJ-808 used for some tine.