scleroscope

Similarly, the equipment for testing the quality of hardened earth construction mortars, plasters and renders - eg using a pocket penetrometer or pendulum scleroscope

Chapter 5 1994

In order to use the chart it is necessary to harden the sample we desire to test as we would harden a piece of tool steel, and then test by scleroscope.

The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916

A 100 per cent inspection for scleroscope hardness of the case and the core was made, and no failures were ever recorded when the above material and heat treatment was used.

The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916

"Rebounding hardness" is commonly measured by the Shore scleroscope, illustrated in Fig. 11.

The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916

This can be tested while warm by the scleroscope method, bearing in mind that the reading will not be the same as when cold.

The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916

Gears so treated will show a Brinell hardness of from 512 to 560, or a scleroscope hardness of from 72 to 80.

The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916

They were subsequently tempered in a salt bath at various increasing temperatures, the effective diameter of each thread and the scleroscope hardness being measured at each stage.

The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916

Each finished piston pin, after heat treatment, must show a minimum scleroscope hardness of the case of 70, a scleroscope hardness of the core of from 35 to 55 and a minimum crushing strength when supported as a beam and the load applied at the center of 35,000 lb.

The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916

All highly stressed parts on the Liberty engine must show, after heat treatment, the following minimum physical properties: Elastic limit, 100,000 lb. per square inch; elongation in 2 in., 16 per cent; reduction of area, 45 per cent; scleroscope hardness, 40 to 50.

The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916

After the scleroscope shows the die to be properly hardened, which means from 98 to 101, the temper should be drawn as soon as convenient.

The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916