Mech Engineering World

Handheld Laser Welding: A Beginner’s Guide to Slashing Fabrication Costs Fabrication shops are always looking for ways to reduce welding costs while improving productivity and weld quality. Traditional processes such as MIG/MAG and TIG welding are widely used, but newer technologies are changing modern fabrication. One of the most interesting technologies is handheld laser welding . Handheld laser welding uses a concentrated laser beam to join metal components. In suitable applications, it can provide high welding speeds, lower heat input, reduced distortion and less post-weld finishing. Quick Answer: Handheld laser welding can reduce fabrication costs mainly through faster welding, less grinding, lower distortion and reduced rework. However, the actual savings depend on the material, thickness, joint design, production volume and machine investment. What Is Handheld Laser Welding? Handheld laser welding is a welding process in which a high-power laser produces a c...

MS Flat Bar Weight Calculator Calculate the approximate weight of an MS flat bar using width, thickness and length. Width (mm) Thickness (mm) Length (m) Quantity Calculate Weight Density used: 7.85 g/cm³ for mild steel (MS). MS Flat Bar Weight Calculator The MS Flat Bar Weight Calculator helps you quickly calculate the approximate weight of a mild steel flat bar using its width, thickness, length and quantity. This calculator uses a standard mild steel density of 7.85 g/cm³. How to Calculate MS Flat Bar Weight The basic formula is: Weight (kg) = Width (mm) × Thickness (mm) × Length (m) × 7.85 ÷ 1000 For multiple pieces: Total Weight = Weight per piece × Quantity Example Calculation Suppose you have an MS flat bar with: - Width = 50 mm - Thickness = 6 mm - Length = 6 m - Quantity = 1 Calculation: 50 × 6 × 6 × 7.85 ÷ 1000 = 14.13 kg Therefore, one 50 × 6 mm MS flat bar with a length of 6 metres weighs approximately 14.13 kg. Weight Per Meter Formula For quick calculation...

  Plate Weight Calculator: How to Calculate MS Plate Weight Calculating the weight of a steel plate is an important task in fabrication, manufacturing, structural engineering and material planning. Knowing the approximate plate weight helps engineers estimate material requirements, transportation loads, lifting requirements and project costs. This guide explains the MS plate weight formula and includes a simple plate weight calculator that you can use directly on this page. Quick formula for MS steel: Plate Weight (kg) = Length (mm) × Width (mm) × Thickness (mm) × 0.00000785 MS Plate Weight Calculator Enter the plate dimensions in millimetres. The calculator uses a standard steel density of approximately 7850 kg/m³ . Length (mm) Width (mm) Thickness (mm) Calculate Plate Weight Clear Enter the dimensions and click Cal...

  Introduction : Thermistor is a word formed by combining thermal with a resistor. Thermistors such as RTDs are temperature-sensitive resistors. Thermistors are non-linear devices. Their resistance will decrease with increase in temperature but at a much faster rate than RTDs. The resistance can change by more than 1000 times. As a result, thermistors can sense minute change in temperature which are undetected by RTDs and thermocouples. Metals used in thermistors : Thermistors are small and inexpensive devices which are most commonly made of metal oxides such as those of chromium, nickel, manganese and cobalt. The metal are oxidized through a chemical reaction, ground to a fine powder, than compressed and subjected to high heat. Theses oxides are semiconductor. Types of thermistors : 1)Beads type 2)metallized surface-contact type 1)Beads type : Bead types have platinum wires sintered into a ceramic body(bead) 2)metallized surface-contact type : In contrast to bead types, lead are ...

 D-Alembert's Principle : Consider arigid body acted upon by a system of forces. The system may be reduced to a single  resultant force (P) acting on the body whose magnitude is given by the product of the mass of body (m) and the linear acceleration (a) of the centre of mass of the body.

Newton's Laws of Motion  Following are the Newton's three laws of motion: 1) Newton's first law of motion. It states that everybody continues in the state of rest or of uniform motion, in a sraight line, wnless it is acted upon by some external force. 2) Newton's second law of motion. It states that the rate of change of momentum is directlyr popotional to the inmpressed force, and takes place in the same direction, in which the force acts 3)Newton s third law of motion. It states that to every action, there is always an equal and opposite resction