エントリー - ウエルダーメタル

TIG溶接用シールドガス

11月 7, 2020 カテゴリ: /作成者:

Shielding gas is one of the key parameters in the TIG welding process. We know that the shielding gas is mainly Ar and CO2 used in TIG welding, in many applications, O2, H₂, He or N₂ can be added to improve the welding quality. In addition to argon, helium or a mixture of argon and helium can be used as shielding gases for TIG welding. Today we will introduce the welding performances of this gas medium. Helium (He) He arc welding can weld almost any metal material. 1) He has a high ionization potential, which makes arc initiation difficult and has poor arc initiation performance during welding. 2) The thermal conductivity of helium is almost […]

TP310HCbN（HR3C）鋼の溶接方法は？

8月 1, 2020 カテゴリ: /作成者:

Stainless steel grade TP310HCbN also referred as HR3Csteel, has much higher strength than conventional 310 stainless steels utilizing finely dispersed M23C6 and NbCrN, the 25Cr-20Ni chemical composition offer much better steam oxidation resistance than 18Cr-8Ni Austenitic stainless steels. TP310HCbN Austenitic heat resistant steel is widely used in superheater and reheater systems with an operating temperatures higher than 620℃ in ultra-supercritical thermal power boiler units. These harsh conditions require that the steel and its weld have sufficient high temperature endurance strength, creep strength, corrosion resistance and steam oxidation resistance. In some cases, thermal crack sensitivity of welding, stress corrosion crack sensitivity of joint and aging embrittlement tendency of joint often occur in the process […]