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Showing posts from June, 2023

Calculator: Remaining Thickness of Pressure vessel API 510 (Identify remaining thickness is safe/unsafe)

Thickness Calculation Remaining Thickness of Pressure vessel to identify safe for service Design Pressure (psi): Radius (inch): Stress (psi) ASME Sec VIII Div 1: Efficiency 'E': T(nominal) (inch): Metal Loss (inch): Calculate   Remaining Thickness of Pressure vessel API 510  (Identify remaining thickness is safe/unsafe) Introduction: In the field of pressure vessel inspection and maintenance, determining the remaining thickness of the vessel is of utmost importance. This calculation helps assess the structural integrity of the vessel and ensures its safe operation. In this blog post, we will explore the method for calculating the remaining thickness of a pressure vessel as per API 510 standards. Formula for Minimum Thickness (Tmin): The API 510 standard

Maximum Weld Reinforcement and Weld Joint Categories in ASME Section VIII Division 1

Maximum Weld Reinforcement and Weld Joint Categories in ASME Section VIII Division 1 Introduction: ASME Section VIII Division 1 is a widely recognized code for designing and constructing pressure vessels. Within this code, specific guidelines are provided for weld reinforcement and weld joint categorization. In this blog post, we will explore the maximum weld reinforcement as per UW-35 and the four categories (A, B, C, and D) of weld joints according to UW-3 in ASME Section VIII Division 1. Maximum Weld Reinforcement (UW-35): Weld reinforcement refers to the excess weld metal that extends beyond the original base material surface. ASME Section VIII Division 1 provides guidance on the maximum allowed weld reinforcement in UW-35.  The thickness of the weld reinforcement on each face shall not exceed the following: A reduction in thickness due to the welding process is acceptable provided all of the following conditions are met: (1) The reduction in thickness shall not reduce the mater

Metallurgical changes in Weld and Heat Affected Zone

  Metallurgical changes in Weld and Heat Affected Zone This blog focuses on the metallurgical changes in the weld and heat affected zone of steels. We blog describes the structural changes in the weld and heat affected zone, particularly in the case of carbon steel welded joints. Carbon Steel Categories Carbon steel is categorized based on carbon content, with residual elements such as manganese, silicon, sulfur, and phosphorus not expected to significantly affect the metallurgical and structural properties of the steels. The categories are: Low carbon steel: up to 0.15% carbon content Medium carbon steel: 0.15 to 0.5% carbon content High carbon steel: greater than 0.5% carbon content In general, an increase in carbon content increases the tensile strength and yield strength of carbon steels but decreases ductility and toughness. The changing proportion of the ferrite and pearlite phases formed attribute to this variation. Metallurgical Properties and Phases The mechanical properties

Degree centigrade to Fahrenheit

Temperature Conversion Calculator Temperature converter Celsius to Fahrenheit: Convert Fahrenheit to Celsius: Convert  Understanding Celsius (°C) and Fahrenheit (°F): Exploring Temperature Scales Introduction: Temperature measurement is an essential aspect of our daily lives, influencing everything from weather forecasting to cooking and medical applications. The two most widely used temperature scales are Celsius (°C) and Fahrenheit (°F). In this blog post, we will delve into the origins, characteristics, and usage of both scales, providing a comprehensive understanding of Celsius and Fahrenheit. Celsius (°C): The Celsius scale, also known as the centigrade scale, is a temperature scale defined by the melting and boiling points of water. It was developed by Swedish astronomer Anders Celsius in the 18th century. On the Celsius scale, the freezing point of water is set at 0°C, and the boiling point of water at standard atmospheric pressur

Heat treatment

  Heat Treatment of Steel: Exploring Various Techniques and Their Advantages and Disadvantages Introduction: Heat treatment is a vital process used to enhance the mechanical properties of steel by manipulating its microstructure through controlled heating and cooling. Different heat treatment techniques, such as annealing, tempering, austempering, martempering, carburizing (including gas carburizing and pack carburizing), and surface hardening, can be employed to achieve specific material properties. In this blog post, we will delve into these techniques, their advantages, and disadvantages. 1. Annealing: Annealing is a heat treatment process that involves heating steel to a specific temperature and holding it at that temperature for a prolonged period, followed by controlled cooling. The aim of annealing is to relieve internal stresses, improve machinability, enhance ductility, and refine the grain structure of the steel. The advantages of annealing include improved formability, incre

Calculator: Heat input in welding

Calculate Value Heat input in welding (Travel speed is in mm/min) Voltage: Amperage: Travel Speed: Calculate Result is in Jule/mm Heat Input in Welding: Understanding and Calculation Introduction : In the field of welding, heat input plays a crucial role in determining the quality and integrity of the welded joint. Heat input refers to the amount of heat energy supplied to the base metal during the welding process. It directly affects the weld bead geometry, microstructure, and mechanical properties. In this blog post, we will delve into the concept of heat input in welding, its significance, and how to calculate it using the relevant formula. Understanding Heat Input: Heat input is primarily influenced by three main factors: welding current, welding voltage, and welding speed. The welding current represents the electric current used during welding, the welding voltage refers to the electric po

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