{"id":3024,"date":"2023-10-10T16:07:18","date_gmt":"2023-10-10T16:07:18","guid":{"rendered":"https:\/\/mewelding.com\/?p=3024"},"modified":"2023-10-11T16:09:06","modified_gmt":"2023-10-11T16:09:06","slug":"procedure-qualification-for-buttering","status":"publish","type":"post","link":"https:\/\/mewelding.com\/procedure-qualification-for-buttering\/","title":{"rendered":"Procedure Qualification For Welds With Buttering"},"content":{"rendered":"\n
Buttering is a concept that is widely used in welding field. Buttering is the weld metal deposited on the surface of one or both parts to be joined. This deposit is done with a specific purpose in mind, and the purpose can be different under different situations. <\/p>\n\n\n\n
In this article we shall see various purposes of buttering, how to qualify a welding procedure for such welds, and some interesting situations around the same. \u00a0<\/p>\n\n\n\n
Buttering can have different objectives, based on the application, and the particular circumstance in question. Some of the possible objectives of buttering are as follows:\u00a0<\/p>\n\n\n\n
As an example, consider that two base metals \u2013 one is SA 240 typ 316, another is SA 515 Gr 70, need to be joined. These two are dissimilar metals, that cannot be joined by the common SS electrodes. In such cases, the carbon steel part is buttered with a stainless steel filler such as E309-15, which is known for high nickel and high chromium content than the usual 18Cr-8Ni variety.\u00a0<\/p>\n\n\n\n