Steel Tempering: Enhancing Hardened Steel Properties
Tempering is a heat treatment following the hardening of steel. Its purpose is to reduce internal tensions within the piece, tensions created by strain hardening or cold working. It improves mechanical properties by reducing brittleness and slightly decreasing hardness. This effect is more pronounced at higher tempering temperatures. Tempering also aims to eliminate internal or residual stresses left in the steel due to the tempering, laminating, or forging process.
Types of Tempering
There are three
Read MoreElectronics Essentials: Op-Amps, Transformers, and AC Circuits
Operational amplifiers (op-amps) are versatile components in electronics, commonly used for various applications including amplification, addition, integration, and differentiation. Here’s how they function in each of these roles:
Op-Amp as an Amplifier
An op-amp can be configured as a non-inverting or inverting amplifier.
- Non-Inverting Amplifier: The input signal is applied to the non-inverting terminal. The output is in phase with the input and is amplified based on the gain formula: Gain = 1 +
Metals, Alloys, and Steels: Properties and Applications
Metals and Alloys: Properties and Types
General Properties of Metallic Materials
Physical Properties
Metallic materials typically have high melting points (Tm), are good heat and electrical conductors, and possess medium thermal expansion coefficients.
Mechanical Properties
Metallic materials are ductile (though generally less so than polymers), exhibit high tensile strength, and possess high toughness.
Chemical Properties
Metallic materials are often highly reactive, particularly susceptible to oxidation
Read MoreUnderstanding LCD Panels, TFT Viewers, and Trinitron Screens
LCD Panel Driver Functions
The functions associated with an LCD panel driver include:
- Generation of polarization
- Driving voltages
- Addressing of the array
TFT Viewer and MOS Transistors
In a TFT (Thin-Film Transistor) viewer, MOS transistors are placed behind the liquid crystal, associated with a capacitor, forming a new layer in a matrix.
Electromagnetic Deflection Principle
Electromagnetic deflection involves electrodes that move an electron beam to sweep across the screen. These devices are mounted on
Read MoreElectric Motor Types: DC, AC, and Stepper Explained
Understanding DC Electric Motors
The simplest Direct Current (DC) electric motors, often utilized in battery-operated toys, feature a stator consisting of a cylindrical permanent magnet. Inside this is the rotor, which is constituted by electromagnets (coils surrounding a magnetic core).
The positive and negative poles supply current to the coil through brushes (wipers) and a commutator located at one end of the rotor. These commutator segments are connected to the coil threads, thereby receiving
Read MoreUnderstanding Measurement: Magnitudes, Units, and Errors
Magnitudes and Metrology
5 Magnitudes: Length, mass, time, volume, luminous intensity.
Metrology: The science that studies everything concerning measurement.
- Dimensional: From the measurements.
- Ponderal: Attempts to measure weights.
- Study: Quantities, unit systems, measurement instruments, norms, standards, and instructions.
Systems of Units
International System, CGS system, metric system…
Measurement Instruments
Rule, calipers, angle gauge, scale, protractor, Palmer, stopwatch, and micrometer.
Metrotechnics
Establishes
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