Copper powder used for electric carbon merchandise is electrolytic manufacturing,Guest Posting excessive purity (up to ninety nine.5%), long-grain shape is dendritic, after urgent, the goods with high mechanical power. According to exceptional production 20/28 powder for sale strategies, copper powder be divided into saponification (deacidification) copper powder and unsaponifiable copper powder two sorts, electric powered carbon products manufacturing are popular use unsaponifiable copper.
The technical performance indicators of copper: copper content material isn’t always much less than 99.5%; moisture is not more than zero.05%; thru nitric acid treated, residue on ignition is much less than 0.05%. Copper is the damage components of electric industry generating carbon sliding friction, consisting of one of the critical uncooked substances of metallic-graphite products. It can be used for generating copper-graphite brushes, copper-graphite bearing, copper-graphite and copper-graphite electrode contacts. In the copper-graphite products, copper powder because the auxiliary conductor of merchandise, with the feature of lowering resistivity, growing the allowable modern density, decreasing the touch resistance, lowering the contact voltage drop, growing the analysis of coke’s adhesive, and many others.. Copper appearance is faded crimson, brown or maybe black, need to be stored in sealed containers to prevent oxidation.
Tin is the low melting point steel, the melting factor is 231.Eighty five. The tin powder used for electrical carbon manufacturing is the granular structure that the molten tin liquid organized by way of spraying technique, the spraying method is via compressing air or other gases to weigh down the molten steel go with the flow, make it spraying into powder. Atomized powder particles are cylindrical round form, from time to time additionally show abnormal shape.
Tin powder’s technical overall performance signs: tin content material is not less than 99.5%; through hydrochloric acid handled, the residue isn’t greater than 0.Half%. Copper-graphite merchandise through including tin powder, tin react with copper in the goods, achieve tin bronze, it could growth the mechanical strength of products, improved abrasion resistance. Such as bronze-graphite bearing is the eutectic tin bronze shaped with the aid of tin powder and copper powder role, boom the useful lifestyles of the bearing.
Lead powder for electric charcoal production was taken through the molten lead via spray technique. Different sorts electrical carbon products use exceptional lead powder particle length, lead powder’s technical performance indicators: Lead content material isn’t less than 99.Five%; oxygen content material isn’t extra than 0.5%. Electrical carbon merchandise produced usually with litharge powder, chemical symbol Pb0. Lead powder monoxide technical overall performance indicators: a lead oxide content material of now not less than 90%; steel lead content isn’t extra than 10%; residues insoluble in nitric acid isn’t extra than zero.5%.
Add lead powder or oxidized lead powder into electric powered power brush material ratio can reduce the hardness of the comb raw fabric, so that the brush can be fantastically smooth to set up a terrific contact with the commutator, reducing the rectifying sparks. Lead at 2 hundred ~ 250 can generate lead oxide movie, this film contacts with graphite film, have desirable lubricity, can reduce the wear and tear of the brush and the commutator itself. Adding copper powder in the sliding touch can growth the damage resistance of the contacts.