Stress relieving is a form of post weld heat treatment. In stress relieving we heat a material to a specific temperature; hold it at this temperature for a specified amount of time in order to reduce or eliminate residual stresses; and then cool it at a slow enough rate to prevent these stresses from redeveloping. […]
Both hot rolled and cold rolled steels can easily be welded. However, there are differences between the two that will impact which you choose to use. Making this choice depends on several factors such as strength, surface finish, dimensional accuracy and cost. To understand the difference between hot rolled and cold rolled steel and how […]
Have you heard of post weld heat treatment (PWHT)? Of course you have. If you are involved in welding you have definitely heard this term. But what is PHWT? When is PWHT required? What temperature should PWHT be done at? Heat treating of materials can be a very complicated subject, but when it comes to […]
Regardless what position you hold, if you work in the welding industry you have heard of welding procedures specifications (WPSs). To some, a welding procedure simply means the selection of a few variables such as amps and volts. To others, these are the documents that govern all welding done in their facility. A […]
High carbon steels are those containing 0.45% carbon or higher. They are typically considered “hard to weld” because they are crack sensitive and are susceptible to undergoing significant changes in their physical and mechanical properties after welding. However, high carbon steels can be welded successfully and without problems by having a sound understanding of the […]
Some repairs, whether it is repairing a failed weldment or repairing a crack in a casting, may easily be done by simply grinding out the crack and applying more weld. Other repairs, however; are more complicated. Or at least they should be. Just last week a customer contacted us asking for help in developing a […]
