Abstract
In the article the questions of development of construction of the closed ventilation and filtering system (CVFS) are considered on cleaning of air-gas mixture at deposition. The offered system consists of gas in-take, filters, containers for assembling of hard parts, hard constituent of welding aerosol (TSSA), by the gaseous constituent of welding aerosol (GSSA) and corps, special vent system with adjusting of speed and volume of extraction. Conducted research for cleaning of welding aerosols (SA) at deposition of high wear proof alloys of type of sormite with the use of the CVFS. Special CVFS is used, filters in particular mechanical, electric, chemical (sorption). Extraction of air-gas mixture from the area of melting of electrode and welding bath of is carried out by the pipe of small diameter, with adjusting of speed and volume of extraction passes the system of filtration the special vent system where clears up from TSSA. Thus cleared gas mixture is used as gas defense at depositing. It is necessary it is not simple to catch SA, but to filter in the closed system, clean and give filtered clean y air in the area of deposition, technology and metallurgical properties of process of depositing must not be broken here. Features of the mechanical cleaning are in technologies of deposition, characterized that air-gas mixture has a temperature which influences on a sorbent. The mechanical cleaning by the centrifugal chamber of cleaning (CCC) is the modernized cyclone filter where centrifugal forces and gravities were used. Differs from existent cyclic filters a presence by a conical spiral insertion and rearranged surface of cone which engulfs it. In the entrance tangential union coupling appears, divided aero mixture into a few streams of entered in a spiral insertion. In the electric filter (electrostatic) electric forces operate on particles and gas molecules (based on the phenomena ionization of gas molecules, by an electric charge in the electric field). An electric charge is revealed to the particles, and they under the action of the electric field are besieged from a gas stream. If such gas, containing the several of transmitters of charges, to place between electrodes, connected with the source of high voltage, ions and electrons will begin to move to on power the field lines . This is important during neutralization of GSSA
Highlights
Receipt of deposited metal with necessary wearproofness provided application, as a rule, depositing material of containing the alloying elements of the required amount
An electric charge is revealed to the particles, and they under the action of the electric field are besieged from a gas stream
Different foreign analogues are in-process [4] considered on filters and vent systems applied in a welding and surfacing production with extract in the atmosphere of TSSA and gaseous constituent of welding aerosol (GSSA), that worsens the sanitary-hygienic indexes of environment
Summary
Receipt of deposited metal with necessary wearproofness provided application, as a rule, depositing material of containing the alloying elements of the required amount. At depositing of high-alloyed of wear proof alloys the far of TSSA is selected, GSSA, polluting environment [1,2,3,4]. The filtration and ventilation systems are in-process [2,3] presented which partly decides cleaning of GSSA and TSSA at welding and depositing of wear proof alloys. At welding or deposition in-process of a vent system the optimum mode of speed of sucking of volumes of the deleted air-gas mixture is set for providing of necessary chemical composition of deposited metal or welding guy-sutures. Different foreign analogues are in-process [4] considered on filters and vent systems applied in a welding and surfacing production with extract in the atmosphere of TSSA and GSSA, that worsens the sanitary-hygienic indexes of environment
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