A method of and system for controlling the oil concentration in and the stability of an oil-in-water emulsion used as a coolant-lubricant in a metalworking operation in which a portion of the emulsion is circulated through a sensor to monitor its density and to generate a signal relating the density to the oil concentration. The signal is employed to control addition of oil to the emulsion to thereby control the concentration within close limits. Sensing means also monitors the stability of the circulated emulsion, and emulsifier is added, as required, either to the oil to be added or directly to the emulsion to thereby control both the oil concentration in and the stability of the emulsion.

Apparatus for controlling the concentration and stability of an emulsion

Method and apparatus for controlling the thickness of rolled strip

A method and apparatus for applying hot rolling mill lubricants composed of water and difficultly dispersible oil to the rolls of rolling stands used to reduce hot steel whereby the lubricant is applied only during the period when the workpiece contacts the rolls of the rolling stands. The oil is continuously circulated in a loop system to maintain it at a desired temperature range, and then admixed with water when a rolling stand calls for lubrication. Water is preferably continuously fed to the rolls for cooling.

Hot rolling mill lubrication apparatus and process

A method and apparatus for applying lubricant to a workpiece in a four-high mill includes the application of an atomized lubricant to the back-up rolls from which it is transferred to the work rolls and then to the workpiece. A sensor detects when the workpiece enters and leaves the work rolls and actuates a control to automatically feed atomizing air and oil to nozzles directed toward the back-up rolls when the workpiece enters the work rolls and shut off the feed when the workpiece leaves the work rolls.

Apparatus for applying lubricant to a workpiece in a hot strip mill

A method for drawing metal cups to can bodies has the steps of drawing the cups through several roll collars while spraying a lubricant in such a way that it lubricates the roll surfaces, the can body and the roll bearings, and also cools, and flushes fine substances. The device for the method has roll collars, a mandrel, ducts connected to a source of lubricant, and orifices for directing the lubricant in spray jets.

Method and device for drawing metal cups to can bodies

Our invention relates to a method for lubricating cold reducing mills and more particularly to a method for reducing palm oil consumption in cold reducing mills. The cold reduction of steel by rolling constitutes a considerable finished product of the steel industry. Palm oil has been used...

De Marr M Erskine

Papers

Method of lubricating cold reducing mills