Plasma-arc Remelting of Steels and Superalloys
نویسندگان
چکیده
منابع مشابه
Melting and Refining Technology of High-temperature Steels and Superalloys a Review of Recent Process Developments
The recent increase in number and capacity of special melting techniques and refi ning processes is related to the continuing growth of high-temperature alloy usage in wrought and cast form and to the fact that the metallurgical and technological potential of conventional melting and casting processes have been largely exhausted. The evol ution of the major melting processes for high-performanc...
متن کاملModern Control Strategies for Vacuum Arc Remelting of Segregation Sensitive Alloys
There are several process variables which are crucial to the control of vacuum arc remelting of segregation sensitive alloys. These are: electrode gap, melt rate, cooling rate, furnace annulus, furnace atmosphere and electrode quality (i.e. cleanliness and integrity). Of these variables, active, closed loop control is usually applied only to electrode gap. Other variables are controlled by cont...
متن کاملMetal Transfer and Arc Plasma in Gas Metal Arc Welding
This article analyzes the transient complex heat transfer and fluid flow in molten metal and arc plasma during the gas metal arc welding process. The model predicts the formation, growth, detachment, and transfer of droplets from the tip of a continuously fed electrode under the influences of several competing forces including gravity, electromagnetic force, arc pressure, plasma shear stress, a...
متن کاملLiquid metal flow behavior during vacuum consumable arc remelting process for titanium
125301-7474 IJET-IJENS @ February 2012 IJENS I J E N S Abstract—To better understand the vacuum arc remelting (VAR) process, a 3D finite element model is established to analyzing the electromagnetic, temperature and flow fields of titanium alloy ingot during steady state melting process using ANSYS software. The research results show that the current flows from the crucible to consumable electr...
متن کامل1 Arc Plasma Torch Modeling
Arc plasma torches are the primary components of various industrial thermal plasma processes involving plasma spraying, metal cutting and welding, thermal plasma CVD, metal melting and remelting, waste treatment and gas production. They are relatively simple devices whose operation implies intricate thermal, chemical, electrical, and fluid dynamics phenomena. Modeling may be used as a means to ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Transactions of the Iron and Steel Institute of Japan
سال: 1979
ISSN: 0021-1583,1881-1183
DOI: 10.2355/isijinternational1966.19.48