Metals for drinks cans

Metals for drinks cans

Few people would think that the humble drink can (Fig. 1.5) was anything special. But to a materials engineer it is high technology. Look at the requirements. As far as possible we want to
Generic copper-based metals

Generic copper-based metals

high-carbon or low-alloy steels to give extra strength. However, there are a few components where even the strength of high-carbon steels as delivered “off the shelf” (y ≈ 400 MPa) is not enough. We
Metals for a model traction engine

Metals for a model traction engine

Model-making has become big business. The testing of scale models provides a cheap way of getting critical design information for things from Olympic yacht hulls to tidal barrages. Architects sell their newest creations with
GENERAL OVERVIEW OF PLASTICS

GENERAL OVERVIEW OF PLASTICS

Plastics are ubiquitous engineering materials which are wholly or in part composed of long, chainlike molecules called high polymers. While carbon is the element common to all commercial high polymers, hydrogen, oxygen, nitrogen, sulfur,
API marks for engine oil containers

API marks for engine oil containers

The newer ILSAC system is based primarily on the same tests, but has a few additional requirements. This system was developed by the International Lubricant Standardization and Approval Committee (ILSAC), a joint organization of
Viscosity Test

Viscosity Test

Viscosity is perhaps the single most important property of a lubricant. Viscosity needs to be sufficient to maintain oil films thick enough to minimize friction and wear, but not so viscous as to cause
Lubricants Testing

Lubricants Testing

Lubricants are manufactured to have specific characteristics, defined by physical and chemical properties, and performance characteristics. Most of the tests used by the lubricants industry are described in ASTM (American Society for Testing and
Lubrication Regimes

Lubrication Regimes

The viscosity of a lubricant and its additive content are to a large extent related to the lubrication regimes expected in its intended application. It is desirable, but not always possible, to design mechanisms
Holding and Driving the Work

Holding and Driving the Work

A number of work-holding devices are used to hold or support the workpiece securely for the different lathe operations. A number of different devices are also used as toolholders. Chucks Some workpieces must be
Feed and Thread-Cutting Mechanism

Feed and Thread-Cutting Mechanism

The same gears that move the carriage are involved in the feed and thread-cutting mechanisms. These gears are used to transmit motion from the headstock spindle to the carriage. Lead Screw Some lathes have
Driver Plate And Tailstock

Driver Plate And Tailstock

Driver Plate  The driver plate turns onto the threaded I spindle nose. Its purpose is to drive the  A threaded work mounted on the lathe centers by spindle nose with a live means of
Cross Slide  And Compound Rest

Cross Slide And Compound Rest

Cross Slide The cross slide is a casting that is mounted on and gibbed to the saddle. The cross-slide screw is located in the saddle and is connected to the cross slide. The cross
facing

facing

In all turning machines, the facing operation is flat turning, in which the work is traversed with a cutting tool in a plane perpendicular to the axis of rotation. A facing head, as shown