In this topic we will talk about OCV in welding power source. We need to solve some question to clear this topic: What is OCV? Types of static characteristic of power source? How to identify? How to know which welding process use what type of it ( CC or CV )? … 1) What is … Continue reading CSWIP 3.1: What is OCV ( Open Circuit Voltage ) in welding power source?
This short guide is intended to give a very basic introduction to ISO metric nuts and bolts. It is intended for those working in plant and machinery maintenance to give enough information to ensure that correct replacement parts are identified and used. If you are responsible for repairing and maintaining machinery, particularly if that machinery … Continue reading BOLT/NUT GRADE & MATERIAL SELECTION
When checking Bolt material coming, do you have feeling lose in the forest of BOLT & THEARD? We will help you to identify them accordingly via this topic! It has internal thread & external thread, can call male & female also. 1) Thread direction: The helix of a thread can twist in two possible directions.: left … Continue reading Thread of Bolts – Basic Knowledge
1) A solid inclusion in a welder may be: Entrapped slag. (answer) Entrapped gas. Lack of inter-run fusion. None of the above. This is “solid” not gas! 2) Which is the following is a planar imperfection? Lack of sidewall fusion. (answer) Slag inclusion. Linear porosity. Root concavity. 3) For … Continue reading CSWIP 3.1: Question with Answer and Explanation – Part 20