Plastic Rosin Flux: Ripley, 1929

Perry C. Ripley of Chicago, for the Kester Solder Company, patented this flux in 1929, US 1,724,680. In cored solder the heat releases the flux onto the surfaces to be joined. Rosin in the usual dry, powdered form cracks, lets in air and moisture and decomposes. Mixed with turpentine, rosin stays permanently plastic: it does not crystallise or crack, and it keeps air and moisture out. Ripley made it as the core of rosin-core solder.

初学者

Workshop process

说明

Melt the rosin

Melt the rosin in a suitable container until it is fluid.

此步骤所需材料：

松香1 as required

所需工具：

锅

电热板

Add the turpentine

Add turpentine as the plasticiser, from 2% to 50% by weight depending on the grade of rosin, since rosins contain varying amounts of fluids. It may also be added while the rosin is still melting. Ripley lists other solvents (kerosene, naphtha, alcohol, acetone and more), but chose turpentine: it is not very volatile at soldering temperatures and does not conduct electricity.

此步骤所需材料：

松节油1 as required

所需工具：

称重秤

Mix thoroughly

Agitate the rosin and turpentine mechanically until the turpentine has penetrated the whole rosin mass. The result is a rosin flux in a substantially permanent plastic form.

所需工具：