In order to meet the needs of welding stainless steel,copper,and titanium alloy of thickenessfrom 0.5mm to 2.0mm,a rational in structure and advanced plasma welding torch for medium current(30～10 0A)is developed.
The actual measure accuracy of the sthrough the wire sensor can reach ±0.4mm,therefore the requirements of torch height control and wire energy compensation control of CO 2 welding can be met perfectly.
When the torch in middle, wire feed rate 3.9 m/min, welding speed 13.9 mm/s, welding current 66 A , welding voltage 11.8 V, continuous, uniform and best shape joint was formed, the shearing strength was up to 82.6 MPa.
The feeding-sample system used by microwave plasma torch atomic emission spectroscopy (MPT-AES) is the pneumatic nebulization system; its efficiency, however, is not good.
They were also applied for automatic seam tracking, such as automatic torch transverse alignment and torch height adjustment in welding.
The captured images are processed by an algorithm on the basis of the analysis of gray characteristics of the root gap to get the offsetting information between torch and root gap centerline.
The Mn/Ce serial catalysts were characterized by Brunauer-Emmett-Teller (BET) analysis and the metal cation leaching was measured by inductively coupled plasma torch-atomic emission spectrometry (ICP-AES).
The model describes a two-phase (coal particles + air) chemically reacting flow, which propagates in a channel with or without an internal heat source (an electric arc, a plasmatron torch, or exothermic chemical reactions).