There are five different types of welded joints for bringing two parts together for joining. Five types of welded joints are butt joint, corner joint, lap joint, tee-joint and edge joint. Tee Welding Joint Tee welding joints are formed when two members intersect at a 90° angle which makes the edges come together in the center of a…
Eddy current inspection is used in a variety of industries to find defects and make measurements. One of the primary uses of eddy current testing is for defect detection when the nature of the defect is well understood. In general, the technique is used to inspect a relatively small area and the probe design and…
In Impulse Turbine, steam completely expands in the nozzle itself. Hence its pressure remains constant on both ends of the moving blades. In Reaction Turbine, Fixed blades act as nozzles. Hence steam expands both in fixed and moving blades continuously as it passes over them. Thus the pressure drop occurs gradually and continuously over both…
It is the ratio between the velocities of the driver and the follower or driven. It may be expressed, mathematically, as discussed below: Let d1 = Diameter of the driver, d2 = Diameter of the follower, N1 = Speed of the driver in r.p.m., and N2 = Speed of the follower in r.p.m. Length of the belt that…
Once upon a time a person needed to move something heavy. He or she picked up a long stick and stuck it under the edge of the heavy object and then pushed down on the other end of the stick. And the first simple machine was invented. Simple machines are just that. The simplest form…
Welding electrode E7018 is a term that describes the electrode’s tensile strength, welding position, flux coating and current. E7018 electrodes are used in manual metal arc or MMA welding. In MMA welding, an arc is struck between the electrode and the object in question. The electrode and metal object melt and form a solid on cooling….