Friday, July 30, 2010

Steel Belt (20)

The above figure is plotting of the broken frequency, which is appeared when the steel belt is rotated under specific stress conditions. The numbers of point are samples, and the curve is drawn. This is called S-N curve.

Title: Steel Belt (20)

Friday, July 23, 2010

Steel Belt (19)

The above figure shows the relation between the load and the expansion when the metal is put on the testing machine, which metal is pulled by the machine.
The steel belt uses all the spring steels. Because the weld of the steel belt receives the heat influence when welding, strength is also weak. Therefore, it breaks by a numerical value that is lower than the parent metal.
For your information, the upper yield stress doesn't appear to the stainless steel like mild steel.

Title: Steel Belt (19)

Wednesday, July 7, 2010

Steel Belt (18) Belt pulley diameter

The following relation exists on the welded type steel belt.

belt pulley diameter (D) and thickness (t)

This numerical value is only as a guide and 700 of the magnifications can be changed to 600 times and 500 times etc. according to the usage and the condition.
Why is such a numerical value necessary?
Title: Steel Belt (18) Belt pulley diameter