CSWIP 3.1: What is OCV ( Open Circuit Voltage ) in welding power source?

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?

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BOLT/NUT GRADE & MATERIAL SELECTION

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

CSWIP 3.1: Question with Answer and Explanation – Part 20

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